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Browsing Tag

oxygen

29 posts
HHealth
Lungs and trachea.
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Artificial lung keeps patient alive after lung removal

  • February 5, 2026
By replacing both breathing and circulatory buffering, a novel artificial lung bought critical time after lung removal, revealed…
HHealth
Senior women are doing exercise with hoop for fitness and coordination
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Regular aerobic exercise slows a key marker of brain aging in midlife

  • January 22, 2026
A year of consistent aerobic activity didn’t just boost fitness; it shifted MRI-based brain age in early to…
SScience
Brighter Side of News
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Researchers find Jupiter holds 1.5x more oxygen than the Sun

  • January 21, 2026
Thick, swirling clouds cover Jupiter from pole to pole. They hold water like Earth’s clouds, but at far…
HHealth
Balancing copper antimicrobials to combat antibiotic resistance
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Study reveals how antibiotic resistant bacteria delay chronic wound healing

  • January 17, 2026
An international team of scientists, led by Nanyang Technological University, Singapore (NTU Singapore), has discovered a new way…
TTechnology
Babies born eight-ten weeks early can be milk fed from the start, study finds
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Pulse oximeters overestimate blood oxygen levels in patients with darker skin

  • January 15, 2026
Fingertip monitors known as pulse oximeters that can be used at home to detect low blood oxygen levels…
SScience
Excessive amounts of visceral fat tied to faster heart aging
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Euphorbia neriifolia L. extract protects against cardiomyocyte injury and heart failure

  • December 31, 2025
Announcing a new publication for Acta Materia Medica journal. Heart failure (HF) remains a major global health challenge…
SScience
Brighter Side of News
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Nearby red giant challenges how stars spread the building blocks of life

  • December 23, 2025
You are watching a long-held idea in stellar physics face serious scrutiny. Researchers at Chalmers University of Technology,…
SScience
Example photographs of primary, mixed, and secondary halite inclusion assemblages. Image credit: Park et al., doi: 10.1073/pnas.2513030122.
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Scientists Find Ancient Air Bubbles in 1.4 Billion-Year-Old Salt Crystals

  • December 23, 2025
Researchers have found ancient gases and fluids trapped in 1.4-billion-year-old halite crystals from northern Ontario, Canada. Their analyses…
SScience
Study: Acute Impact of Polyphenol-Rich vs. Carbohydrate-Rich Foods and Beverages on Exercise-Induced ROS and FRAP in Healthy Sedentary Female Adults - A Randomized Controlled Trial. Image Credit: Improvisor / Shutterstock
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How specific foods reshape oxidative stress responses during and after high-intensity training

  • December 12, 2025
A new randomized trial reveals how simple food choices before and after fasted HIIT can shift the body’s…
HHealth
Cellular responses to ischemic reperfusion injury in young vs older donor organs. During ischemia, the deprivation of oxygen and nutrients leads to mitochondrial dysfunction and energy loss. In young cells, mitochondrial resilience helps sustain ATP production, ameliorating damage. Old cells, in contrast, experience significant ATP depletion, relying heavily on anaerobic metabolism, which leads to lactate buildup, pH reduction, and cellular stress. Upon reperfusion, the restoration of blood flow triggers oxidative stress as mitochondria generate excessive reactive oxygen species (ROS). Young cells compensate for those events through robust antioxidant systems, maintaining cellular integrity. Conversely, in old cells, impaired antioxidant defenses result in unregulated ROS production, furthermore damaging membranes, organelles, and DNA. Additionally, old cells release pro-inflammatory genes, amplifying local inflammation. Consequences are particularly severe in aged vascular endothelial cells, with ion pump dysfunction (e.g., Na⁺/K⁺ ATPase) causing ionic imbalances and cellular edema. This disruption exacerbates ischemic injury, progressing to irreversible damage. In contrast, young cells effectively resolve edema and inflammation through mechanisms that include macrophage945 mediated clearance of Damage-Associated Molecular Patterns (DAMPs) and anti-inflammatory cytokine release (e.g., IL-10 and TGF-β), allowing recovery and tissue repair. In old cells, persistent ROS generation, unresolved inflammation, and DAMP accumulation lead to irreversible inflammation, organelle collapse, and eventual cell death. Created in BioRender. Kayumov, M. (2025) https://BioRender.com/m23u7ro .
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Scientists outline how organ rejuvenation strategies could solve the donor shortage

  • December 12, 2025
New insights into cellular aging, perfusion technologies, and senescence-targeting treatments show how aging organs could be revived, turning…
SScience
Beta blockers reduce mortality and heart failure in MI patients with mildly reduced ejection fraction
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Collaborative project seeks safer therapies for ischemia and reperfusion injury

  • December 11, 2025
Southwest Research Institute (SwRI) and Trinity University will improve a prodrug, a compound activated in the body, to…
HHealth
New approach doubles chemotherapy effectiveness by targeting cancer cell memory
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Tiny metal particles can kill cancer cells while leaving healthy cells unharmed

  • December 2, 2025
An international research team led by RMIT University have created tiny particles, known as nanodots, made from a…
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