Categories
- Global News Feed
- Uncategorized
- Alabama Stem Cells
- Alaska Stem Cells
- Arkansas Stem Cells
- Arizona Stem Cells
- California Stem Cells
- Colorado Stem Cells
- Connecticut Stem Cells
- Delaware Stem Cells
- Florida Stem Cells
- Georgia Stem Cells
- Hawaii Stem Cells
- Idaho Stem Cells
- Illinois Stem Cells
- Indiana Stem Cells
- Iowa Stem Cells
- Kansas Stem Cells
- Kentucky Stem Cells
- Louisiana Stem Cells
- Maine Stem Cells
- Maryland Stem Cells
- Massachusetts Stem Cells
- Michigan Stem Cells
- Minnesota Stem Cells
- Mississippi Stem Cells
- Missouri Stem Cells
- Montana Stem Cells
- Nebraska Stem Cells
- New Hampshire Stem Cells
- New Jersey Stem Cells
- New Mexico Stem Cells
- New York Stem Cells
- Nevada Stem Cells
- North Carolina Stem Cells
- North Dakota Stem Cells
- Oklahoma Stem Cells
- Ohio Stem Cells
- Oregon Stem Cells
- Pennsylvania Stem Cells
- Rhode Island Stem Cells
- South Carolina Stem Cells
- South Dakota Stem Cells
- Tennessee Stem Cells
- Texas Stem Cells
- Utah Stem Cells
- Vermont Stem Cells
- Virginia Stem Cells
- Washington Stem Cells
- West Virginia Stem Cells
- Wisconsin Stem Cells
- Wyoming Stem Cells
- Biotechnology
- Cell Medicine
- Cell Therapy
- Diabetes
- Epigenetics
- Gene therapy
- Genetics
- Genetic Engineering
- Genetic medicine
- HCG Diet
- Hormone Replacement Therapy
- Human Genetics
- Integrative Medicine
- Molecular Genetics
- Molecular Medicine
- Nano medicine
- Preventative Medicine
- Regenerative Medicine
- Stem Cells
- Stell Cell Genetics
- Stem Cell Research
- Stem Cell Treatments
- Stem Cell Therapy
- Stem Cell Videos
- Testosterone Replacement Therapy
- Testosterone Shots
- Transhumanism
- Transhumanist
Archives
Recommended Sites
Monthly Archives: June 2020
Kiadis announces first patient enrolled in clinical study conducted at The Ohio State University in R/R AML with off-the-shelf K-NK cells from…
Posted: June 25, 2020 at 1:48 pm
Amsterdam, The Netherlands, June 25, 2020 Kiadis Pharma N.V. (Kiadis or the Company) (Euronext Amsterdam and Brussels: KDS), a clinical stage biopharmaceutical company, and The Ohio State University Comprehensive Cancer Center Arthur G. James Cancer Hospital (OSUCCC-James), today announced that the first patient has been enrolled and treated in a phase I, first-in-human clinical trial in patients with relapsed/refractory acute myeloid leukemia (R/R AML) with off-the-shelf Natural Killer (NK) cells manufactured at the Cell Therapy laboratory at the OSUCCC-James using Kiadis FC21 and proprietary universal donor platforms. The trial is being conducted at the OSUCCC-James and is expected to provide valuable data to support Kiadis K-NK003 development program.
The phase I study, NCT04220684, will evaluate the NK cell product in up to 56 patients, ages 18 80 who have primary refractory AML, relapsed AML, or myelodysplastic syndromes (MDS). The goal of this study is to establish safety of the NK cell therapy for the induction of remission in patients with R/R AML or MDS and to determine the optimal dosing and overall response rate. Patients enrolled in the study will receive six doses of NK cells of 1 x 107 cells/kg to 1 x 108 cells/kg after receiving reinduction chemotherapy. The trial is expected to provide further clinical proof-of-concept of Kiadis K-NK003 product. Kiadis is supporting the Investigator-sponsored study through a collaborative research agreement with OSUCCC-James.
Sumithira Vasu, MBBS, the principal investigator of the clinical trial, hematologist and scientist, Medical Director of the Cell Therapy Lab at OSUCCC-James, and associate professor at the Ohio State College of Medicine says, This off-the-shelf universal donor NK cell therapy is an exciting new experimental treatment option for patients with R/R AML and MDS that allows us to infuse large numbers of hyperfunctional NK cells immediately when needed. Treating our first patient with this therapy is an important step in this ongoing clinical research.
Andrew Sandler, MD, chief medical officer of Kiadis commented, This trial uses a novel off-the-shelf, readily available NK cell product to treat a very sick and difficult-to-treat group of patients. We are very enthusiastic with the initiation of this trial and to be one step closer to bringing K-NK-cell therapies to a broad patient population across a potentially wide range of cancers.
Kiadis contacts
Dutch Translation/Nederlandse vertaling
Kiadis Pharma N.V. (Kiadis of de Onderneming) (Euronext Amsterdam en Brussel: KDS), een biofarmaceutisch bedrijf gericht op onderzoek in de klinische fase, en de Comprehensive Cancer Center Arthur G. James Cancer Hospital van de Ohio State University (OSUCCC-James), kondigen aan dat de eerste patint is behandeld in een fase-I klinische studie voor behandeling van patinten met recidiverende of refractaire acute myelode leukemie (R/R AML). De studie wordt uitgevoerd door de OSUCCC-James met NK-cellen geproduceerd in het Cell Therapy laboratorium aan de OSUCCC-James op basis van de Kiadis FC21- en universele-donorplatforms. De studie zal naar verwachting waardevolle gegevens leveren voor het K-NK003 product van Kiadis.
In de fase-I studie (NCT04220684) wordt het NK-celproduct gevalueerd bij maximaal 56 patinten van 18-80 jaar met primaire refractaire AML, recidiverende AML of myelodysplastische syndromen (MDS). Het doel van de studie is om veiligheid, inductie van remissie, optimale dosering en responspercentage met NK celtherapie vast te stellen bij deze patienten. Deelnemende patinten krijgen zes doseringen NK-cellen van 1 x 107 cellen/kg tot 1 x 108 cellen/kg. Kiadis ondersteunt de studie door middel van een onderzoeksovereenkomst met Ohio State University.
Dit persbericht vormt een vertaling van het gepubliceerde Engelstalige persbericht. Bij eventuele verschillen is de tekst van het Engelstalige persbericht altijd bepalend.
About Kiadis K-NK-cell Therapies Kiadis NK-cell programs consist of off-the-shelf and haplo donor cell therapy products for the treatment of liquid and solid tumors as adjunctive and stand-alone therapies.
The Companys NK-cell PM21 particle technology enables improved ex vivo expansion and activation of anti-cancer cytotoxic NK-cells supporting multiple high-dose infusions. Kiadis proprietary off-the-shelf NK-cell platform is based on NK-cells from unique universal donors. The Kiadis off-the-shelf K-NK platform can make NK-cell therapy product rapidly and economically available for a broad patient population across a potentially wide range of indications.
Kiadis is clinically developing K-NK003 for the treatment of relapse/refractory acute myeloid leukemia. The Company is also developing K-NK002, which is administered as an adjunctive immunotherapeutic on top of HSCT and provides functional, mature and potent NK-cells from a haploidentical family member. In addition, the Company has pre-clinical programs evaluating NK-cell therapy for the treatment of solid tumors.
About Relapsed/Refractory Acute Myeloid Leukemia (R/R AML) Acute myelogenous leukemia (AML) is the most common type of acute leukemia in adults and has the lowest survival rate of all leukemias. AML relapse affects nearly half of all leukemia patients who achieved remission after initial treatment and can continue to occur several months to several years after treatment with the majority of relapses occurring within two to three years of the initial treatment. Patients with relapsed or refractory leukemia have limited treatment options and poor survival rates.
The goal of treatment for acute myeloid leukemia (AML) is to put the leukemia into complete remission and to keep it that way. Unlike conventional chemotherapy options, which primarily target dividing cells, immunotherapeutic therapies aim at directing an immune response against tumor cells. Natural Killer (NK) cells are effector lymphocytes of the innate immune system capable of exerting anti-AML activity. The K-NK cell platform is a cell-based immunotherapy to treat patients with advanced blood cancer.
About KiadisFounded in 1997, Kiadis is building a fully integrated biopharmaceutical company committed to developing innovative therapies for patients with life-threatening diseases. With headquarters in Amsterdam, the Netherlands, and offices and activities across the United States, Kiadis is reimagining medicine by leveraging the natural strengths of humanity and our collective immune system to source the best cells for life.
Kiadis is listed on the regulated market of Euronext Amsterdam and Euronext Brussels since July 2, 2015, under the symbol KDS. Learn more at http://www.kiadis.com.
Forward Looking Statements Certain statements, beliefs and opinions in this press release are forward-looking, which reflect Kiadis or, as appropriate, Kiadis officers current expectations and projections about future events. By their nature, forward-looking statements involve a number of known and unknown risks, uncertainties and assumptions that could cause actual results, performance, achievements or events to differ materially from those expressed, anticipated or implied by the forward-looking statements. These risks, uncertainties and assumptions could adversely affect the outcome and financial effects of the plans and events described herein. A multitude of factors including, but not limited to, changes in demand, regulation, competition and technology, can cause actual events, performance, achievements or results to differ significantly from any anticipated or implied development. Forward-looking statements contained in this press release regarding past trends or activities should not be taken as a representation that such trends or activities will continue in the future. As a result, Kiadis expressly disclaims any obligation or undertaking to release any update or revisions to any forward-looking statements in this press release as a result of any change in expectations or projections, or any change in events, conditions, assumptions or circumstances on which these forward-looking statements are based. Neither Kiadis nor its advisers or representatives nor any of its subsidiary undertakings or any such persons officers or employees guarantees that the assumptions underlying such forward-looking statements are free from errors nor does either accept any responsibility for the future accuracy of the forward-looking statements contained in this press release or the actual occurrence of the anticipated or implied developments. You should not place undue reliance on forward-looking statements, which speak only as of the date of this press release.
Posted in Cell Medicine
Comments Off on Kiadis announces first patient enrolled in clinical study conducted at The Ohio State University in R/R AML with off-the-shelf K-NK cells from…
Neurons thrive even when malnourished – Newswise
Posted: June 25, 2020 at 1:48 pm
Newswise ITHACA, N.Y. When animal, insect or human embryos grow in a malnourished environment, their developing nervous systems get first pick of any available nutrients so that new neurons can be made.
In this process, called organ sparing, resources are preferentially delegated to the nervous system at the cost of less important organs or tissues.
New research now shows that developing nervous systems demonstrate this preferential growth even at the level of individual neurons. In a paper published in eLife June 22,Low FoxO expression in Drosophila somatosensory neurons protects dendrite growth under nutrient restriction,a team of Cornell researchers discovered the molecular mechanism that helps facilitate organ sparing on this cell-by-cell basis.
The phenomena we found is similar to the phenomena of the sparing of the brain, but there are very important differences, saidChun Han, senior author and a Nancy M. and Samuel C. Fleming Associate Professor in the Department of Molecular Biology and Genetics in the College of Agriculture and Life Sciences and in the Weill Institute for Cell and Molecular Biology. The neurons are protected at the growth level of individual neurons, and they become bigger and bigger by extending their branches.
Those branches are called dendrites. They form a system of elaborate arms that extend from neurons cellular bodies, and they can receive stimuli from the external environment.
Han and his team wanted to look at how nutrient deficiency affects the dendrite growth of individual neurons, and then examine what cellular sacrifices bodies make so that vital organs, including the brain, continue to develop.
They divided Drosophila (fruit fly) larva into groups receiving either a high- or low-yeast diet, simulating nutrient-rich and nutrient-poor environments. Then they observed how neural cells developed compared to neighboring skin cells on the body wall. They monitored the progress every 24 hours using confocal microscopy that uses lasers to light up fluorescent markers that label individual cells.
We have very beautiful markers that specifically label these populations of neurons, Han said. Every neuron is very clear to us down to every single branch.
The researchers observed that the neurons grew at a much higher rate than skin cells in the low-yeast environment. Skin cells grew faster when there was less competition for nutrients. Han and his team learned that this difference is due to a critical gene called FoxO an important regulator of cellular stress response.
FoxO is a gene thats expressed in pretty much most cells of the body, Han said. When the cells face low nutrients, FoxO puts a brake on the system and slows cell growth.
Whats particularly interesting about FoxO is that just because most cells have it, doesnt mean they all use it at the same time or under the same conditions. Hans team discovered that even during malnutrition, the Drosophila neurons expressed very little FoxO, whereas the epidermal cells expressed FoxO at much higher levels.
When there are fewer nutrients available, FoxO triggers a response in epidermal cells called autophagy, which tells the cell to self-destruct by consuming itself. However, the limited FoxO expression in neurons preserves individual neural cells and their dendrite growth.
And while humans have more complex systems than Drosophila, Han said that this research helps pave the way for investigating similar phenomenon in humans.
Our study reveals another layer of nervous system sparing under nutrient deficiency and discovers a novel mechanism by which neurons are protected. Han said. These findings may facilitate the development of better approaches to treat problems caused by malnutrition during early development.
Co-authors include Amy Poe, Ph.D. 18; graduate student Yineng Xu; Christine Zhang 19; Joyce Lei 21; Kailyn Li 17; and David Labib 20; they conducted research through theHan Labin the Weill Institute for Cell and Molecular Biology and the Department of Microbiology and Genetics. Poe is currently a postdoctoral researcher at the University of Pennsylvania Perelman School of Medicine; Li is currently in the Doctor of Medicine Program at Weill Cornell Medicine.
This research was supported by a Cornell startup fund and two grants from the National Institutes of Health.
See original here:
Neurons thrive even when malnourished - Newswise
Posted in Cell Medicine
Comments Off on Neurons thrive even when malnourished – Newswise
Oncolytics Biotech Announces Investigator Sponsored Phase 2 Trial Evaluating Pelareorep-anti-PD-1 Combination Treatment in Triple-Negative Breast…
Posted: June 25, 2020 at 1:48 pm
SAN DIEGO and CALGARY, Alberta, June 25, 2020 /PRNewswire/ -- Oncolytics Biotech Inc. (NASDAQ: ONCY) (TSX: ONC), today announced a new investigator-sponsored triple-negative breast cancer (TNBC) study to be managed by Rutgers Cancer Institute of New Jersey. The phase 2 trial, known as IRENE, will investigate the use of pelareorep in combination with Incyte's anti-PD-1 checkpoint inhibitor retifanlimab (INCMGA00012) in patients with unresectable locally advanced or metastatic TNBC.
"We are very excited to evaluate pelareorep in TNBC, as prior clinical data show it has the potential to address a pressing unmet need in this challenging indication," said principal investigator Mridula George, M.D., Medical Oncologist, Rutgers Cancer Institute of New Jersey and Assistant Professor of Medicine, Rutgers Robert Wood Johnson Medical School. "Checkpoint inhibitors targeting interactions between PD-L1 and PD-1, while commercially successful, are ineffective in up to 80% of TNBC patients. This is often due to an immunosuppressive tumor microenvironment. Checkpoint inhibitors are beneficial in patients who have upregulation of PD-L1 expression in the tumor environment. Clinical data show that systemic pelareorep administration can upregulate PD-L1 expression in tumors across multiple breast cancer subtypes, highlighting its potential to substantially increase the percentage of patients who respond to checkpoint inhibitor therapy. Through the IRENE study, we aim to explore how pelareorep-induced adaptive immune responses synergistically interact with PD-1 inhibition to improve patient outcomes in TNBC."
The newly announced IRENE study represents an expansion of Oncolytics' lead breast cancer program into a new disease subtype (TNBC). In addition to investigating the safety and efficacy of pelareorep-anti-PD-1 combination treatment in TNBC patients, the study will also evaluate changes in PD-L1 expression and correlations between treatment outcomes and peripheral T cell clonality, a previously identified biomarker of pelareorep response that may enable the success of future pivotal studies by facilitating the patient selection process. The trial will take place at the Rutgers Cancer Institute of New Jersey and The Ohio State University Comprehensive Cancer Center, and is co-sponsored by Oncolytics, the Rutgers Cancer Institute of New Jersey, and Incyte.
About IRENE
The IRENE (INCMGA00012 and the oncolytic virus pelareorep in metastatic triple-negative breast cancer) study is a single-arm, open-label, phase 2 study evaluating the combination of pelareorep and INCMGA00012 for the treatment of unresectable locally advanced or metastatic triple-negative breast cancer. The study will enroll 25 patients and will be conducted at the Rutgers Cancer Institute of New Jersey and The Ohio State University Comprehensive Cancer Center.
Study participants will receive pelareorep intravenously on days 1, 2, 15, and 16 of 28-day treatment cycles. INCMGA00012 will be administered on day 3 of each cycle, with treatment cycles continuing until disease progression is observed. The co-primary endpoints of the study are safety and objective response rate. Secondary endpoints include progression free survival, overall survival, and duration of response. Exploratory endpoints include peripheral T cell clonality and pre- vs. post-treatment change in tumor PD-L1 expression.
About Breast Cancer
Breast cancer is the most common cancer in women worldwide, with over two million new cases diagnosed in 2018, representing about 25 percent of all cancers in women. Incidence rates vary widely across the world, from 27 per 100,000 in Middle Africa and Eastern Asia to 85 per 100,000 in Northern America. It is the fifth most common cause of death from cancer in women globally, with an estimated 522,000 deaths.
Breast cancer starts when cells in the breast begin to grow out of control. These cells usually form a tumor that can often be seen on an x-ray or felt as a lump. The malignant tumor (cancer) is getting worse when the cells grow into (invade) surrounding tissues or spread (metastasize) to distant areas of the body.
About Pelareorep
Pelareorep is a non-pathogenic, proprietary isolate of the unmodified reovirus: a first-in-class intravenously delivered immuno-oncolytic virus for the treatment of solid tumors and hematological malignancies. The compound induces selective tumor lysis and promotes an inflamed tumor phenotype through innate and adaptive immune responses to treat a variety of cancers and has been demonstrated to be able to escape neutralizing antibodies found in patients.
About Oncolytics Biotech Inc.
Oncolytics is a biotechnology company developing pelareorep, an intravenously delivered immuno-oncolytic virus. The compound induces selective tumor lysis and promotes an inflamed tumor phenotype -- turning "cold" tumors "hot" -- through innate and adaptive immune responses to treat a variety of cancers.
Pelareorep has demonstrated synergies with immune checkpoint inhibitors and may also be synergistic with other approved immuno-oncology agents. Oncolytics is currently conducting and planning additional studies in combination with checkpoint inhibitors and targeted therapies in solid and hematological malignancies, as it prepares for a phase 3 registration study in metastatic breast cancer. For further information, please visit: http://www.oncolyticsbiotech.com.
This press release contains forward-looking statements, within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended and forward-looking information under applicable Canadian securities laws (such forward-looking statements and forward-looking information are collectively referred to herein as "forward-looking statements"). Forward-looking statements, including the Company's belief as to the potential and mode of action of pelareorep as a cancer therapeutic, the design, purpose, timing and anticipated benefits of the IRENE study; and other statements related to anticipated developments in the Company's business and technologies involve known and unknown risks and uncertainties, which could cause the Company's actual results to differ materially from those in the forward-looking statements. Such risks and uncertainties include, among others, the availability of funds and resources to pursue research and development projects, the efficacy of pelareorep as a cancer treatment, the success and timely completion of clinical studies and trials, the Company's ability to successfully commercialize pelareorep, uncertainties related to the research and development of pharmaceuticals, uncertainties related to the regulatory process and general changes to the economic environment. In particular, we may be impacted by business interruptions resulting from COVID-19 coronavirus, including operating, manufacturing supply chain, clinical trial and project development delays and disruptions, labour shortages, travel and shipping disruption and shutdowns (including as a result of government regulation and prevention measures). It is unknown whether and how the Company may be affected if the COVID-19 pandemic persists for an extended period of time. We may incur expenses or delays relating to such events outside of our control, which could have a material adverse impact on our business, operating results and financial condition. Investors should consult the Company's quarterly and annual filings with the Canadian and U.S. securities commissions for additional information on risks and uncertainties relating to the forward-looking statements. Investors are cautioned against placing undue reliance on forward-looking statements. The Company does not undertake to update these forward-looking statements, except as required by applicable laws.
Company ContactKirk Look, CFOOncolytics Biotech Inc.+1-403-670-7658klook@oncolytics.ca
Investor Relations for Oncolytics Timothy McCarthyLifeSci Advisors+1-212-915-2564tim@lifesciadvisors.com
SOURCE Oncolytics Biotech Inc.
Company Codes: NASDAQ-NMS:ONCY, Toronto:ONC, Dusseldorf:ONY, Frankfurt:ONYN, Munich:ONYN, Stuttgart:ONYN
View original post here:
Oncolytics Biotech Announces Investigator Sponsored Phase 2 Trial Evaluating Pelareorep-anti-PD-1 Combination Treatment in Triple-Negative Breast...
Posted in Cell Medicine
Comments Off on Oncolytics Biotech Announces Investigator Sponsored Phase 2 Trial Evaluating Pelareorep-anti-PD-1 Combination Treatment in Triple-Negative Breast…
Aiming ultrasound at the brain raises hope of new treatments – Science Magazine
Posted: June 25, 2020 at 1:48 pm
Pulses of ultrasound aimed at a motion-sensitive brain area (from brown device, right) improved peoples ability to judge dots direction of motion.
By Kelly ServickJun. 24, 2020 , 1:30 PM
As a way to see inside the body, revealing a tumor or a fetus, ultrasound is tried and true. But neuroscientists have a newer ambition for the technology: tinkering with the brain. At frequencies lower than those of a sonogram but still beyond the range of human hearing, ultrasound can penetrate the skull and boost or suppress brain activity. If researchers can prove that ultrasound safely and predictably changes human brain function, it could become a powerful, noninvasive research tool and a new means of treating brain disorders.
How ultrasound works on the brain remains mysterious. But recent experiments have offered reassurance about safety, and small studies hint at meaningful effects in humansdampening pain, for example, or subtly enhancing perception. Ive seen a lot of tantalizing data, says Mark Cohen, a neuroscientist at the University of California, Los Angeles (UCLA). While the challenges are very large, the potential of this thing is so much larger that we really have to pursue it.
Scientists can already modulate the brain noninvasively by delivering electric current or magnetic pulses across the skull. The U.S. Food and Drug Administration (FDA) has approved transcranial magnetic stimulation (TMS) to treat depression, migraine pain, and obsessive-compulsive disorder (OCD).
But unlike magnetic or electric fields,sound waves can be focusedlike light through a magnifying glasson a point deep in the brain without affecting shallower tissue. For now, that combination of depth and focus is possible only with a surgically implanted wire. But ultrasound could temporarily disrupt a deep human brain regionthe almond-shaped amygdala, a driver of emotional responses, for example, or the thalamus, a relay station for pain and regulator of alertnessto test its function or treat disease.
Results in animals are encouraging. Experiments in the 1950s first showed ultrasound waves could suppress neural activity in a visual region of the cat brain. In rodents, aiming ultrasound at motor regions has triggered movements such as a twitch of a paw or whisker. And focusing it on a frontal region of monkey brains can change how the animals perform at eye movement tasks.
But its technically tricky to aim ultrasound through thick, dense skull bone and to show its energy has landed at the intended point. And ultrasounds effects on the brain can be hard to predict. How much it boosts or suppresses neural activity depends on many parameters, including the timing and intensity of ultrasound pulses, and even characteristics of the targeted neurons themselves. I have tremendous excitement about the potential, says Sarah Hollingsworth Lisanby, a psychiatrist at the National Institute of Mental Health who studies noninvasive neuromodulation. We also need to acknowledge that theres a lot we have to learn, she says.
For one thing, researchers are largely in the dark about how sound waves and brain cells interact. Thats the million-dollar question in this field, says Mikhail Shapiro, a biochemical engineer at the California Institute of Technology. At high intensities, ultrasound can heat up and kill brain cellsa feature neurosurgeons have exploited to burn away sections of brain responsible for tremors.
Even at intensities that dont significantly increase temperature, ultrasound exerts a mechanical force on cells. Some studies suggest this force alters ion channels on neurons, changing the cells likelihood of firing a signal to neighbors. If ultrasound works primarily via ion channels, Thats great news, Shapiro says, because that means we can look at where those channels are expressed and make some predictions about what cell types will be excited. In a preprint on bioRxiv last month, Shapiros team reported that exposing mouse neurons in a dish to ultrasound opens a particular set of calcium ion channels to render certain cells more excitable.
But these channels alone wont explain ultrasounds effects, says Seung-Schik Yoo, a neuroscientist at Harvard University. He notes that ultrasound also appears to affect receptors on nonneuronal brain cells called glia. Its very hard to [develop] any unifying theory about the exact mechanism of ultrasound, he says.
Regardless of mechanism, ultrasound is starting to show clear, if subtle, effects in humans. In 2014, a team at Virginia Polytechnic Institute and State University showed focused ultrasound could increase electrical activity in a sensory processing region of the human brain and improve participants ability to discern the number of points being touched on their fingers. Neurologist Christopher Butler at the University of Oxford and colleagues have tested ultrasound during a more complex sensory task: judging the motion of drifting, jiggling dots on a screen. Last month at the Cognitive Neuroscience Societys annual meeting online, he reported that stimulating a motion-processing visual region called MT improved subjects ability to judge which way the majority of the dots drifted.
Ultrasounds effects have so far been subtler than those of TMS, says Mark George, a psychiatrist at the Medical University of South Carolina, who helped develop and refine that technology. With TMS, you put it on your head and turn it on and your thumb moves, he says. But the ultrasound experiments that prompted paw twitches in mice used intensities so, so, so much higher than what were being allowed to use in humans.
Regulators have limited human studies in part because ultrasound has the potential to cook the brain or cause damage through cavitationthe creation of tiny bubbles in tissue. In 2015, Yoo and colleagues found microbleeds, a sign of blood vessel damage, in sheep brains repeatedly exposed to ultrasound. This was a huge speed bump, says Kim Butts Pauly, a biophysicist at Stanford University. But in February in Brain Stimulation, her group reported microbleeds in control animals as well, suggesting this damage might result from dissection of the brains. Butts Pauly and Yoo now say theyre confident the technology can be used safely.
Cohen and collaborators recently tested safety in people by aiming ultrasound at regions slated for surgical removal to treat epilepsy. With FDAs OK, they used intensities up to eight times as high as the limit for diagnostic ultrasound. As they reported in a preprint on medRxiv in April, they found no significant damage to brain tissue or blood vessels. However, to find the limit of safety, researchers will likely need to go all the way to levels that damage tissue, Cohen says.
Several teams are cautiously moving into tests of ultrasound as treatment. In 2016, UCLA neuroscientist Martin Monti and colleagues reported that a man in a minimally conscious state regained consciousness following ultrasound stimulation of his thalamus. Monti is preparing a publication on a follow-up study of three people with chronically impaired states of consciousness. After ultrasound, they showed increased responsiveness over a period of daysmuch faster than expected, Monti says, although the study included no control group.
That research and the tests in epilepsy patients used an ultrasound device developed by BrainSonix Corporation. Its founder, UCLA neuropsychiatrist Alexander Bystritsky, hopes ultrasound can disrupt neural circuits that drive symptoms of OCD. A team at Massachusetts General Hospital and Baylor College of Medicine is planning a study in humans using the BrainSonix device, he says.
Columbia University biomedical engineer Elisa Konofagou hopes to use ultrasound to treat Alzheimers disease. Before COVID-19 interrupted participant recruitment, she and colleagues were preparing a pilot study to inject tiny gas-filled bubbles into the bloodstream of six people with Alzheimers and use pulses of ultrasound to oscillate the microbubbles in blood vessels lining the brain. The mechanical force of those vibrations can temporarily pull apart the cells lining these vessels. The researchers hope opening this blood-brain barrier will help the brain clear toxic proteins. (Konofagous team and others are also exploring this ultrasound-microbubble combination to deliver drugs to the brain.)
In his first test of ultrasound after years of studying TMS, George looked to reduce pain. His team applied increasing heat to the arms of 19 participants, who tended to become more sensitive over repeated tests, reporting pain at lower temperatures by the last test. But if, between the first and last test, they had pulses of ultrasound aimed at the thalamus, their pain threshold dipped half as much. This is definitely a double green light to keep pursuing the technology, George says.
George regularly treats depressed patients with TMS and has seen the technology save lives. But everybody wonders if we could go deep with a different technologythat would be a game changer, he says. Ultrasound holds that promise, but the question is can it really deliver?
Read the original post:
Aiming ultrasound at the brain raises hope of new treatments - Science Magazine
Posted in Cell Medicine
Comments Off on Aiming ultrasound at the brain raises hope of new treatments – Science Magazine
Study gives insights into how human fat cells are affected by age – Mirage News
Posted: June 25, 2020 at 1:48 pm
It was once thought that the fat cell was fairly inactive, but we suspect that its active and controls a lot more than previously thought, says Niklas Mejhert, co-senior author of the paper and joint group leader with Rydn at the Department of Medicine, Huddinge, Karolinska Institutet. If we can regulate the accumulation of fat in a more controlled way, it could bring huge advantages.
The results of the study, which explain why adipose tissue becomes less effective and how lipolysis declines with age, are of interest to the efforts being made to find future treatments able to improve the function of adipose tissue.
We now plan to examine how different cells within the fat tissue are affected by age, continues Rydn. This is particularly interesting when it comes to stem cells, which have the unique and important ability to renew themselves and repair injury. Its something were keen to follow up on.
The study was conducted with grants from the Karolinska Institutet Strategic Research Programme in Diabetes, the Knut & Alice Wallenberg Foundation, the Swedish Research Council and the Novo Nordisk Foundation.
Age-Induced Reduction in Human Lipolysis: A Potential Role for Adipocyte Noradrenaline Degradation, Hui Gao, Peter Amer, Gallic Beauchef, Christelle Guere, Katell Vie, Ingrid Dahlman, Niklas Mejhert and Mikael Rydn. Cell Metabolism, online June 25, 2020, doi: 10.1016/j.cmet.2020.06.007
Here is the original post:
Study gives insights into how human fat cells are affected by age - Mirage News
Posted in Cell Medicine
Comments Off on Study gives insights into how human fat cells are affected by age – Mirage News
Stem cell therapy: why we need to be suspicious about cure-all claims – The Irish Times
Posted: June 25, 2020 at 1:45 pm
If you were to read many of the adverts for stem cell therapy that you can find online, you would be forgiven for believing that stem cell therapy is nothing short of a panacea. It is, according to those ads, able to improve all sorts of conditions, from knee pain and osteoarthritis, hair loss to heart disease, diabetes and even autism.
Theres just one problem theres little science behind many of the claims.
Stem cells are only approved for use in treating certain cancers and blood disorders, yet a search for the term on Facebook or Google will return details of a large number of clinics offering treatments for many other conditions.
The harsh reality is that while there is a lot of promising research being undertaken in this area, nobody should be parting with large sums of money for what may be currently no more than snake oil treatments, according to Noel Caplice, who is professor of cardiovascular sciences in the department of medicine at University College Cork and a consultant cardiologist.
Caplice, who has more than 20 years experience monitoring stem cell research as part of his studies into heart disease, told The Irish Times that we should all be suspicious about the range of different ailments clinics are willing to treat with stem cells.
There should be red lights flashing and alarm bells ringing. No therapy treats everything from Parkinsons disease to multiple sclerosis to heart disease to knee pain thats idiotic. Medicine just doesnt work like that.
True stem cell therapy is extremely complex because you have to refine the type of cell youre going to give to the organ it will be used in, and there are different challenges in different organs. Legitimate scientists are working on these things, but they are not there yet. Its an incredibly difficult area of research.
Stem cells have long been considered a great hope of medicine. They are the bodys building blocks, the cells from which other types of cells develop. Under the right conditions they can be encouraged to become any other type of cell found in the body, such as blood cells, brain cells, heart muscle cells and so on.
At its simplest, stem cell therapy involves cultivating stem cells in the lab, guiding them to grow into specific types of other cells, and then injecting those healthy cells into diseased parts of the body where in certain circumstances they have been shown to help the bodys own cells to fight disease.
This effect was first shown around 30 years ago in experiments on mice. However, things have not been all plain sailing since then.
The initial promise of stem cells has not been fulfilled, and whats happened in the meantime is that commercial clinics offering treatments have gotten ahead of the science, said Caplice.
The first trials in mice showed incredible regeneration, but their progress turned out not to be so straightforward. When the initial trials were replicated, the researchers couldnt reproduce the same early data.
While research is ongoing and there have been a few significant breakthroughs using stem cells, notably in the case of combined stem cell and gene therapy for thalassemia and leukaemia, that has not stopped unscrupulous clinics from marketing all sorts of treatments under the banner of stem cell therapy.
In the private world anything goes. There are people spinning this therapy for multiple sclerosis, Parkinsons, solid organ deterioration a whole range of problems. Ten years ago there was even a boat operating off the west Cork coast that was treating people for multiple sclerosis using stem cells. This has been going on for decades in this parallel world, and its mostly driven by money, Caplice said.
According to Frank Barry, professor of cellular therapy at the regenerative medicine institute with NUI Galway, a negative side effect of the off-label use of stem cells is that it makes it harder for researchers to raise money for research.
It damages our reputation to have people doing this. We all get painted with the same brush, and it makes it much harder to raise money. When these maverick clinics are exposed for their bad practices, there is a blow-back effect on us even though were completely unconnected, he said.
The sad thing is that there are genuinely quite exciting applications of stem cell therapy that will be possible in the future. All of these are undergoing scientifically-designed clinical trials that are carefully done, carefully managed, are placebo-controlled, double blind the works. Some of these trials are going quite well and suggest that the outcome will be good.
The biopharmaceutical company Takeda Ireland, for example, is currently developing a treatment for inflammatory bowel disease using the results of a trial that was conducted into stem cells.
Thats a dreadful condition that blights peoples lives. This is a new treatment so thats very exciting. That project achieved market authorisation because of careful work done over many years in high quality clinical trials, said Barry.
My own work is in the treatment of arthritis with stem cell therapy, and thats also going well. Were in the middle of a big trial thats been running in a number of clinical sites around Europe, and we think that when its finished itll be positive.
Running trials like these takes a lot of time and a lot of money. In the meantime bad actors are stepping into the gap that exists between promising early results and actual rigorous and robust science.
The harsh reality is that you cant recommend that a patient has stem cell therapy for anything that isnt directly authorised. If someone does that now theyre getting it off-label, so to speak, and basically theyre taking their chances, said Barry.
I can understand why someone might want to do that, but its not authorised. I would hold out a great deal of hope that when all the work is done there will be strong proof supporting this kind of treatment. But at the moment you can spend a huge amount of money essentially for nothing because there isnt the evidence to support treatment.
View original post here:
Stem cell therapy: why we need to be suspicious about cure-all claims - The Irish Times
Posted in Stem Cell Treatments
Comments Off on Stem cell therapy: why we need to be suspicious about cure-all claims – The Irish Times
UAE stem cell therapy for coronavirus treats over 2000 patients, 1200 fully recover – Khaleej Times
Posted: June 25, 2020 at 1:45 pm
The Abu Dhabi Stem Cell Centre (ADSCC) has now treated more than 2,000 patients suffering from Covid-19, with 1,200 already fully recovered from the effects of the virus.
ADSCC announced today that it had succeeded in ramping up the number of treatments from 73 in the initial clinical trial.
The large increase was as a result of a major effort by staff at the centre to treat as many people as possible following the UAE Government's decision to make it available free of charge to all moderate-to-high risk Covid-19 patients in the country.
Also read: UAE expects Covid-19 vaccine by end of 2020 or early 2021
The Government's decision came after the treatment, branded UAECell19, demonstrated efficacy and an impressive safety profile reflected in the absence of significant changes in adverse events reported, an absence of any unexpected serious reactions (such as anaphylaxis, allergic reactions or sudden death) and an absence of any lung complications as determined by radiological exams from inhalation of the nebulized product.
A team of doctors and researchers at ADSCC, led by Dr Yendry Ventura, announced in May that they had developed a new treatment for Covid-19 patients. UAECell19, an autologous stem cells based therapy, appears to help the body fight the virus and makes the disease less harmful.
Following an initial trial, researchers were able to conclude that UAECell19 reduced the duration of hospitalisation from 22 days to just six, when compared to patients who had received standard treatment.
Further analyses revealed that patients treated with the stem cells were 3.1 times more likely to recover in less than seven days than those treated with standard therapy, and 67 per cent of the patients who received the stem cells treatment owed this recovery to the new treatment.
ADSCC has since secured intellectual property rights protection for UAECell19, which opens the way for the treatment to be shared widely so more patients can benefit.
ADSCC said researchers are at various stages of several investigatory efforts to establish effectiveness (Phase 3 trial), optimal efficacy of dosage, and efficacy to treat other respiratory diseases such asthma, COPD, and cystic fibrosis.
Go here to see the original:
UAE stem cell therapy for coronavirus treats over 2000 patients, 1200 fully recover - Khaleej Times
Posted in Stem Cell Treatments
Comments Off on UAE stem cell therapy for coronavirus treats over 2000 patients, 1200 fully recover – Khaleej Times
Should You Delay Cancer Treatment Because of COVID-19? Study Says Most Treatments Dont Worsen Coronavirus Infection – On Cancer – Memorial Sloan…
Posted: June 25, 2020 at 1:45 pm
Summary
A review of 423 patients treated at MSK finds that most people with cancer dont fare any worse if they get COVID-19 than other people who are hospitalized for that infection.
In the early days of the COVID-19 pandemic, many doctors worried that people undergoing treatment for cancer would do particularly poorly if they became infected with the virus that causes the disease. Thats because treatments for cancer, especially chemotherapy, can lower a persons immune defenses and put them at higher risk for all kinds of infections.
But according to a new study from Memorial Sloan Kettering published June 24 in Nature Medicine, most people in active cancer treatment dont fare any worse if they get COVID-19 than other people who are hospitalized with the infection. Further research is needed to look at the effects of certain drugs mainly immunotherapies called checkpoint inhibitors, which did seem to make COVID-19 worse. But the researchers say their findings suggest that no one should delay cancer treatment because of concerns about the virus.
If youre an oncologist and youre trying to figure out whether to give patients chemotherapy, or if youre a patient who needs treatment, these findings should be very reassuring, says infectious disease specialist Ying Taur, one of the studys two senior authors.
Infectious disease expert Ying Taur has cared for many MSK patients who were hospitalized with COVID-19.
The study looked at 423 MSK patients diagnosed with COVID-19 between March 10 and April 7, 2020. Overall, 40% were hospitalized for COVID-19, and 20% developed severe respiratory illness. About 9% had to be placed on a mechanical ventilator, and 12% died. The investigators found that patients taking immunotherapy drugs called immune checkpoint inhibitors were more likely to develop severe disease and require hospitalization. But other cancer treatments, including chemotherapy and surgery, did not contribute to worse outcomes.
The big message now is clear: People should stay vigilant but not stop or postpone checkpoint immunotherapy or any other cancer treatment.
Factors that did make COVID-19 worse were the same as those seen in studies of people who didnt have cancer. We found that being older, as well as preexisting conditions like heart disease and diabetes, are all drivers of severe COVID-19 illness, says MSK Chief Medical Epidemiologist Mini Kamboj, the studys other senior author. This wasnt surprisingbecause these connections are well established.
Although the study wasnt large enough to make determinations about every treatment and every cancer type, patterns did emerge. Dr. Taur says there was initially great concern about people receiving high doses of chemotherapy for leukemia, especially those who had recently undergone bone marrow or stem cell transplants. Thats because transplants require a persons entire immune system to be wiped out with chemotherapy before they receive new blood cells, leaving them susceptible to all kinds of infections.
Surprisingly, though, Dr. Taur cared for recent transplant recipients who were infected with COVID-19 but didnt have any symptoms. If you think about it more, it makes sense, he says. Most of the complications seen in people with COVID-19 seem to be caused by the bodys immune response to the virus.
On the other hand, immunotherapy drugs called checkpoint inhibitors work by freeing up the immune system to attack cancer. Patients receiving these agents may develop a more robust reaction to the virus that causes COVID-19. This may explain why this study observed higher rates of complications in people with COVID-19 infection who were treated with checkpoint inhibitors.
Even with immune checkpoint inhibitors, though, these findings should not affect whether patients get treated. Everyone who needs these drugs should still receive them, Dr. Kamboj says. Its just important for doctors to be extra vigilant about testing and monitoring for the virus and for people with cancer to take extra precautions to avoid infection.
A study published in May 2020 by MSK immunotherapy expert Matthew Hellmann focused exclusively on people with lung cancer who got COVID-19. The researchers didnt find the same risks from immune checkpoint drugs as this Nature Medicine study. More research in this area is needed.
Dr. Kamboj notes that one aspect of this research that sets it apart from other studies is that it included at least 30 days of follow-up after a COVID-19 diagnosis. Also, it reported severe respiratory illness as a main outcome rather than death.
Having that follow-up time is something that a lot of other studies have not included because everyone is in a rush to get their data out. In addition, reporting death rates can overestimate infection-related mortality, especially in the early phase of an epidemic, Dr. Kamboj says. Also, the clinical spectrum and course of this disease is still not fully understood, especially in people with cancer. We wanted to give patients enough time to recover and make sure they didnt need to be readmitted to the hospital.
Even with immune checkpoint inhibitors, though, these findings should not affect whether patients get treated. Everyone who needs these drugs should still receive them.
She adds that another strength of the study is that patient outcomes were not affected by constraints caused by a lack of space or supplies even though MSK is in the heart of the COVID-19 epicenter in New York City, where other hospitals faced overcrowding and other issues. This gave researchers a true picture of how cancer patients fare with COVID-19. We saw a surge during the peak of the epidemic in New York, but everyone got the care they needed, Dr. Kamboj explains. We had enough ventilators for everyone who needed them. We never had to make decisions about who to admit to intensive care because of a lack of critical equipment.
Drs. Taur and Kamboj agree that this is just one of many studies that will need to be done on the connections between cancer and COVID-19. We still need to find out more. We need to look at the connections between COVID-19 and particular types of cancer as well as outcomes related to specific chemotherapy drugs, Dr. Taur concludes. But the big message now is clear: People should stay vigilant but not stop or postpone checkpoint immunotherapy or any other cancer treatment.
Posted in Stem Cell Treatments
Comments Off on Should You Delay Cancer Treatment Because of COVID-19? Study Says Most Treatments Dont Worsen Coronavirus Infection – On Cancer – Memorial Sloan…
Expert Advice for How to Treat Stress-Related Hair Loss – Coveteur
Posted: June 25, 2020 at 1:45 pm
How to help reverse the damage.
As opposed to visiting your dermatologist to treat a bout of hormonal acne or undergo a hyperpigmentation laser session, hair loss is something that most people are a little more reticent to discuss. Women especially might feel embarrassed or ashamed to admit that they are experiencing above-average thinning, when in reality,50 percent of women will eventually see excessive hair loss. Stress is just one of the many culprits that can cause you to shed upwards of 100 hairs in a dayas compared to the normal 50100 hairsbut considering that were in a global pandemic, in addition to addressing systemic police brutality, wed say that the timing is ripe for a little bit of balding.
Accepting that hair loss might happen right now is just step one. Step two is realizing that you can address it, even if you cant fix patchiness overnight. We spoke with dermatologist Dr. Jeanine Downie of Image Dermatology, and Shab Reslan, hair health expert at HairClub, to learn more about the relationship between stress and thinning hair, as well as the products and treatments that can help reverse the damage.
Advertisement
Your hair is never just stagnantthe follicles, or roots of your hair, are in a constant cycle of growing, shedding, and resting. Dr. Downie explains that the anagen or growth phase is genetically determined, and according to Reslan, it can last anywhere from three to five years (sometimes longer). The catagen or transitional phase occurs after the anagen phase, signalling the end of active hair growth for about two to three weeks. Finally, theres the telogen or resting phase, which lasts for roughly three months, wherein the hair remains in the follicle until it is pushed out by new growth. According to Dr. Downie, this is the phase that can be made worse by significant stress, which shifts your hair into the resting phase when it is more easily shed.
While hair loss is a constant problem for which people seek treatment, both Dr. Downie and Reslan are seeing more patients during this period of extreme stress and anxiety, even those who have never struggled with hair thinning before. When youre feeling stressed, your body is experiencing an increase in its cortisol levels. Dr. Downie explains, Cortisol is pumped out of your adrenal glands, which sit on top of your kidneys. Once this is in your system, cortisol interacts with your hormones and can cause your hair to go into the resting phase. This resting phase is when your hair is most susceptible to falling out. And aside from seeing increased hair shedding, she notes that stress can also cause your scalp to itch, which might in turn lead you to scratch and prompt those hairs to fall out.
Says Reslan, The true culprit of stress-induced hair loss is inflammation and its damaging effects on the cells in our body, namely our hair follicles. New studies have shifted the focus on hair loss from managing stress hormones, such as cortisol, to instead preventing stress itself. This is why were noticing more adaptogens (natural stress relievers) being incorporated in hair supplements, hair products, and wellness products all around. In other words, incorporating an at-home wellness practice like meditation or acupressure might be a wise decision right now.
Advertisement
Dr. Downie urges her patients to remember that treating any type of hair loss is a long gamethe only real short-term options are regularly trimming your hair and using deep-penetrating protein conditioners at home. Reslan breaks the treatment cycle into four pillars: using a gentle shampoo and conditioner to maintain a healthy scalp; using topicals to nourish your follicle and stimulate growth; taking supplements to boost your nutrient intake and reinvigorate your hair growth; and visiting your hair-treatment professional to undergo laser sessions.
Navigating the world of hair supplements can be tricky, as there is little in the way of regulation. Dr. Downie recommends Nutrafol or Viviscal to everyone experiencing hair loss, stress-related or not, which can help you see results in four to six months. Be advised, you cannot target hair regrowth to just your headyour hair will grow everywhere.
In terms of lasers, there are a few options that she offers her patients depending on the severity of their case. KeraLase is a treatment option wherein you open the channels of the hair follicle with a laser and then put in Kerafactor, which is a cytokine and stem-cell-rich patented formula that works better than PRP [platelet-rich plasma] to grow hair. And while you may have heard about low-level-laser light therapy caps, she does not recommend them for her patients, nor does she suggest direct PRP treatment. Reslan does reveal that shes seen results from clients and friends who use a laser cap regularly, so when in doubt, speak with your treatment specialist for her own recommendation.
In case you cant get in to see your dermatologist for the foreseeable future, Dr. Downie does endorse using Rogaine (aka Minoxidil), but only the 5-percent foam formulation, although she feels that it is quite sloppy in terms of results. Otherwise, eating a balanced diet, exercising regularly, getting enough sleep, and avoiding any and all heat-styling tools will all promote healthier hair growth and reduce the likelihood of stress-related hair loss. Just remember to be patient with yourselfregrowth is not an overnight process. Says Reslan, Hair grows half an inch every month, so you can expect to see fuller-looking hair around three to four months [after starting treatment and embracing lifestyle changes]. And even though it might be traumatic to experience stress-related hair loss, it is an acute problem, and if you act fast, it is reversible.
SHOP ITEM
Root Activator Scalp Serum$40
SHOP ITEM
Keraphix Damage Healing Shampoo$14
SHOP ITEM
Nutritive Mask for Severely Dry Hair$56
SHOP ITEM
K-pak Conditioner$35
SHOP ITEM
Invati Advance Solutions for Thinning Hair System$135
SHOP ITEM
Core for Women$88
SHOP ITEM
Hair Growth Supplements for Women$40
SHOP ITEM
Mens 5% Minoxidil Foam for Hair Regrowth$49
SHOP ITEM
Soothing Elixir$26
Advertisement
See original here:
Expert Advice for How to Treat Stress-Related Hair Loss - Coveteur
Posted in Stem Cell Treatments
Comments Off on Expert Advice for How to Treat Stress-Related Hair Loss – Coveteur
Coronavirus and sex hormones baldness may be a risk factor and anti-androgens a treatment – The Conversation AU
Posted: June 25, 2020 at 1:45 pm
Two small studies published recently suggested most men hospitalised with COVID-19 are bald, generating headlines around the world.
While this may sound strange, science does offer a plausible explanation.
Male pattern baldness is associated with high levels of male sex hormones called androgens. And androgens seem to play an important role in the entry of SARS-CoV-2, the coronavirus that causes COVID-19, into cells.
So its possible high levels of androgens might increase the risk of severe infection and death from COVID-19.
This hypothesis is important to identify people at risk and raises the possibility of new treatment strategies for COVID-19.
Its been obvious from early in the pandemic. Men are at greater risk of severe infection and death from COVID-19 than women.
There are several possible factors at play here. For one, men are more likely to suffer from chronic conditions known to pose a higher risk of serious illness from COVID-19. These include heart disease and diabetes.
Another is that mens immune systems are not as good as womens at warding off the severe effects of viral infections.
These factors are indirectly influenced by sex hormones. Now it seems sex hormones might also have a direct effect on SARS-CoV-2s ability to enter our cells and establish infection.
In one study of 122 male COVID-19 patients admitted to hospitals in Madrid, 79% were bald about double the population frequency.
Another small study in Spain observed a similar overrepresentaton of baldness among men hospitalised with COVID-19.
Read more: Starting to thin out? Hair loss doesn't have to lead to baldness
Male pattern baldness is strongly associated with a higher level of dihydrotestosterone (DHT), a more active derivative of testosterone, and one of the androgen family of male sex hormones.
Confirming this correlation between baldness and susceptibility to COVID-19 with larger samples, controlling for age and other conditions, would be significant. It would suggest a higher DHT level could be a risk factor for severe COVID-19.
SARS-CoV-2 enters human lung cells when a protein on the virus surface (the spike protein) latches onto protein receptors (ACE2 receptors) embedded in the cells surfaces.
How does this work? Recently scientists discovered that an enzyme called TMPRSS2 cleaves the SARS-CoV-2s spike protein, enabling it to bind to the ACE2 receptor. This allows the virus to enter the cell.
The gene that encodes TMPRSS2 is activated when male hormones, particularly DHT, bind to the androgen receptor (a protein on the surface of cells, including hair cells and lung cells).
So the more male hormone, the more androgen receptor binding, the more TMPRSS2 is present, and the easier it is for virus to get in.
A preliminary, non-peer-reviewed study which correlated the androgen levels of hundreds of people in the UK with COVID-19 severity supports this theory. Higher androgen level was associated with susceptibility to and severity of COVID-19 in men (but not women, who have much lower androgen levels in their blood).
The same researchers showed that inhibiting androgen receptors reduced the ability of SARS-CoV-2s spike protein to bind to ACE2 receptors on stem cells in culture.
Over- or underproduction of androgens in the body causes a variety of conditions in both men and women.
For instance, men with benign prostate enlargement overproduce androgen, as do women with polycystic ovary syndrome.
Many such conditions are treated with androgen deprivation therapy (ADT), which inhibits the production or effect of androgens. For instance, prostate cancer, in which cancer cell growth is fuelled by androgens, is routinely treated with ADT.
Conversely, some people have low androgen production, or mutations that affect the binding and action of androgens such as women with androgen insensitivity syndrome caused by mutations of the androgen receptor.
It will be important to find out whether, as the androgen hypothesis predicts, patients with over- or under-production of male hormones are at greater or lesser risk of COVID-19.
Read more: How can I treat myself if I've got or think I've got coronavirus?
If the androgen link holds up, this would encourage exploration of anti-androgens as a way to prevent and treat COVID-19.
Many anti-androgens are already approved for the treatment of other conditions. Some, like baldness treatments, have been used safely for years or decades. Some, like cancer treatments, can be tolerated for months.
A study which looked at men hospitalised with COVID-19 in Italy showed the rate of infection was four times lower in prostate cancer patients on ADT than in untreated cancer patients.
Perhaps a single dose given to someone who tests positive to SARS-CoV-2, or has just been exposed, would suffice to lower the chance of the virus taking hold.
But we need research to confirm this. Several androgen-suppressing drugs are now undergoing clinical trials to determine whether they reduce complications among men with COVID-19.
It will be important to verify that anti-androgen treatment works in the lungs as well as the prostate, and is effective in cancer-free patients. Wed also need to find out what dose is effective, and when it should be administered.
Anti-androgen treatments have several side effects in men, including breast enlargement and sexual dysfunction, so medical oversight is a must.
The androgen link could go a long way to explaining why men are more susceptible to COVID-19 than women. It also may explain why children younger than ten seem very resistant to COVID-19 because, until puberty, boys as well as girls make little androgen.
The more we know about who is at heightened risk from COVID-19, the better we can target information.
The androgen link also opens up an avenue for the discovery of drugs which might mitigate some of the impact of COVID-19 as it continues to sweep the globe.
Read more: COVID-19's deadliness for men is revealing why researchers should have been studying immune system sex differences years ago
Read the original:
Coronavirus and sex hormones baldness may be a risk factor and anti-androgens a treatment - The Conversation AU
Posted in Stem Cell Treatments
Comments Off on Coronavirus and sex hormones baldness may be a risk factor and anti-androgens a treatment – The Conversation AU