Tag

Red Blood Cells

All articles tagged with #red blood cells

science2 days ago•5 min saved

Ultra-Distance Strain May Make Red Blood Cells Stiffer, Study Finds

A study of 23 elite runners in two ultras found red blood cells become less flexible and show damage after extreme distances, with longer races causing greater effects and the Lands cycle repair pathway ramping up. While these changes hint at potential risks, researchers caution there’s no proven long-term harm and note the small sample and other race variables. Interestingly, the observed blood damage resembles that seen in stored blood, which could inform transfusion medicine research.

via ScienceAlert|

#blood-storage #endurance-exercise #oxygen-delivery

science2 days ago•2 min saved

Ultra-long runs may speed up red blood cell aging, study finds

A study of 23 runners found that very long-distance races can injure red blood cells, reducing their flexibility and accelerating aging due to inflammation and oxidative stress, with longer races like the UTMB causing more damage; researchers caution the small sample size and call for more research into training and recovery strategies to minimize cellular damage.

via Runner's World|

#endurance-running #inflammation #oxidative-stress

health-and-medicine6 days ago•7 min saved

Altitude Turns Red Blood Cells Into Sugar Sinks, Hinting at Diabetes Treatments

Scientists at Gladstone Institutes found that under low-oxygen conditions, red blood cells absorb large amounts of glucose from the bloodstream, acting as a sugar sink and lowering blood sugar, which may explain reduced diabetes risk at high altitudes; a drug mimicking this effect reversed diabetes in mice, suggesting a new therapeutic approach.

via ScienceDaily|

#altitude #diabetes #glucose-metabolism

health8 days ago•7 min saved

Extreme Endurance Running Might Accelerate Red Blood Cell Aging

A study in Blood Red Cells & Iron finds ultramarathon races can damage red blood cells, making them less flexible due to mechanical stress and inflammation/oxidative stress; signs of accelerated aging appear after 40‑km races and worsen after 171‑km events, though long‑term effects and duration of damage are unclear; findings could influence training, recovery, and blood storage research, but the study has a small sample size and limited sampling points.

via SciTechDaily|

#aging #health #inflammation

health1 month ago•3 min saved

Diabetes' Hidden Impact on Heart Health and Vascular Damage

Long-term type 2 diabetes can cause red blood cells to become harmful, damaging blood vessels and increasing heart disease risk; microRNA-210 may serve as an early biomarker for identifying patients at higher risk of complications.

via SciTechDaily|

#blood-vessel-damage #cardiovascular-risk #diabetes

science4 months ago•4 min saved

Genetic Factors Likely Accelerated Neanderthal Extinction

A new study suggests that genetic differences in red blood cell function between Neanderthals and modern humans may have caused reproductive issues in hybrids, potentially hastening Neanderthal extinction by reducing their reproductive success over generations.

via Live Science|

#extinction #genetics #hybrid-incompatibility

health8 months ago•1 min saved

Rethinking Aging: Could Anemia Be the Hidden Factor?

Many older adults suffer from anemia, a condition characterized by a deficiency of red blood cells, which can cause fatigue and other symptoms. Despite its prevalence, awareness and effective treatment are still lacking, although some patients find relief with prescribed therapies.

via The New York Times|

#aging #anemia #fatigue

space-science2 years ago•3 min saved

"Space Travel's Impact on Astronauts' Red Blood Cells Revealed"

A 2022 study has revealed that astronauts experience a significant loss of red blood cells during space missions, with their bodies destroying about 54 percent more red blood cells than normal. This phenomenon, known as 'space anemia', continues throughout the duration of the mission and can lead to higher-than-normal circulation of iron serum in the blood, potentially resulting in anemia. While red blood cell levels return to normal a few months after landing, astronauts' bodies continue to destroy 30 percent more red blood cells than before their space trip, posing potential health risks. Adjustments to astronaut diets may be necessary to account for increased red blood cell production and prevent adverse effects upon returning to Earth.

via ScienceAlert|

#astronauts #microgravity #red-blood-cells

health2 years ago•3 min saved

Breakthrough Discovery: Uncovering the Hidden Cause of Brain Hemorrhages

A study led by the University of California, Irvine has identified a new cause of brain hemorrhages that does not involve injury to blood vessels. The research found that interactions between aged red blood cells and brain capillaries can lead to cerebral microbleeds, providing insights into their formation and potential therapeutic targets. The study observed how red blood cells stall in brain capillaries and are then cleared out, leading to the formation of a brain hemorrhage. This discovery expands our understanding of the mechanism behind cerebral microbleeds and may have significant clinical implications for treatment and prevention.

via Medical Xpress|

#brain-capillaries #brain-hemorrhage #cerebral-microbleeds

science-and-technology2 years ago•4 min saved

The Impact of Space Travel on the Human Body: Insights on Bone, Blood, and Immune System

A new study of International Space Station (ISS) astronauts suggests that fatty tissue inside bones helps replenish red blood cells and rebuild bone lost during space travel. The study examined 14 astronauts who spent at least six months on the ISS and found that the body uses fat in the bone marrow to replace red blood cells and increase bone density. This knowledge could lead to treatments for aging populations and individuals on Earth who are bedridden due to medical conditions. Understanding how to prevent anemia in space is crucial for future missions to the moon and Mars.

via Space.com|

#astronauts #bone-marrow #fatty-tissue

health2 years ago•2 min saved

"Israeli scientists develop potential cure for anemia"

Scientists at the Weizmann Institute of Science have identified the cells responsible for the production of red blood cells that carry oxygen in our bodies, which may lead to cures for anemia and other blood diseases. The discovery of Norn cells will enable the development of new drugs and treatments for chronic kidney disease, which damages the production of EPO causing potentially life-threatening anemia.

via Ynetnews|

#anemia #blood-diseases #epo

health2 years ago•6 min saved

Weizmann Institute unravels red blood cell production mystery.

Scientists from the Weizmann Institute of Science have identified a rare subset of kidney cells, named "Norn cells," that are the main producers of erythropoietin (EPO), the hormone that controls red blood cell production. The discovery has significant potential for anemic patients and could lead to the development of new therapies. The identification of these cells may have an impact rivaling that of the discovery of the pancreas's insulin-producing beta cells in the 1950s.

via The Jerusalem Post|

#anemia #erythropoietin #health