تجديد الخلايا الجذعية يعزز نمو العضلات لدى الفئران المسنة

14 مايو، 2026

من إعداد الذكاء الاصطناعي

أظهر باحثون أن تجديد الخلايا الجذعية العضلية من فئران مسنة يؤدي إلى نمو عضلي أكبر وتحسن في التعافي بعد الإصابة. قد يساعد هذا النهج يوماً ما كبار السن على استعادة قوتهم وقدرتهم على الحركة. وأثبتت التجارب فوائد واضحة في وظائف الساق وإصلاح الأنسجة.

قام علماء في جامعة ديوك باستخراج خلايا جذعية عضلية من فئران مسنة، وتدعيمها بليبيدات محددة في المختبر، ثم حقن الخلايا المعالجة في عضلات مصابة لفئران مسنة أخرى. وأنتجت الخلايا المعالجة أليافاً عضلية جديدة أكبر بنسبة 45 في المئة مقارنة بتلك الناتجة عن خلايا غير معالجة، كما أظهرت الفئران أداءً أفضل في اختبارات جهاز المشي والحركة في غضون أيام.

Study links age-related belly fat to a newly identified fat-progenitor cell state

27 يونيو، 2026 من إعداد الذكاء الاصطناعي صورة مولدة بواسطة الذكاء الاصطناعي تم التحقق من الحقائق

Researchers at City of Hope report that aging can spur the emergence of an age-enriched population of adipose progenitor cells that is especially prone to generating new fat cells in abdominal white fat. The work, published in Science, points to a signaling pathway that may help drive midlife increases in belly fat and could become a future therapeutic target.

Study reveals hidden regenerative powers in mammals

Researchers at Texas A&M University have shown that mammals may possess dormant abilities to regrow complex body parts. A new two-step treatment redirected healing in mice away from scarring toward tissue regeneration. The approach restored bone, joints, ligaments and tendons after amputation.

UCLA scientists reverse liver damage in mice by removing zombie cells

16 أبريل، 2026 من إعداد الذكاء الاصطناعي

Researchers at UCLA have identified senescent immune cells, dubbed 'zombie' cells, that accumulate in aging livers and contribute to fatty liver disease. By eliminating these cells in mice, the team reversed liver damage and reduced body weight, even on an unhealthy diet. The findings, published in Nature Aging, suggest similar mechanisms may drive human liver conditions.

Health

Review argues some “senescent” cells can support tissue repair, complicating anti-aging strategies

Health

Scientists find reversible trigger for mitochondrial aging

Science

Stiffening cancer cells boosts car t-cell therapy in mice

Study links gut “luminal exosomes” to age-related inflammation and metabolic decline in mice

Researchers at Marshall University report that microscopic particles found in the gut lumen—known as exosomes—differ between young and old mice and can influence metabolism and gut-barrier function when transferred between animals. The findings, published in the journal Aging Cell, suggest these particles may help drive biological changes associated with aging, though the work is preclinical.

Japanese scientists develop enhanced vitamin K for neuron regeneration

27 مايو، 2026 من إعداد الذكاء الاصطناعي

Researchers in Japan have created new vitamin K compounds that are three times more effective than natural forms at turning stem cells into neurons. The work, published in 2025, targets diseases that destroy brain cells such as Alzheimer’s and Parkinson’s.

29 يونيو 2026 21:11

تجديد الخلايا الجذعية يعزز نمو العضلات لدى الفئران المسنة

مقالات ذات صلة

Study links age-related belly fat to a newly identified fat-progenitor cell state

Study reveals hidden regenerative powers in mammals

UCLA scientists reverse liver damage in mice by removing zombie cells

Review argues some “senescent” cells can support tissue repair, complicating anti-aging strategies

Scientists find reversible trigger for mitochondrial aging

Stiffening cancer cells boosts car t-cell therapy in mice

Study links gut “luminal exosomes” to age-related inflammation and metabolic decline in mice

Japanese scientists develop enhanced vitamin K for neuron regeneration

USC scientists create renewable supply of cancer-fighting cells

Faecal transplant boosts brain plasticity in older mice

Scientists create mice with rat chromosome from frozen tissue

Cambridge study reveals potential to reverse nerve damage

Duke-led Nature study links glia-to-neuron mitochondria transfer to reduced nerve pain in neuropathy models

Mouse study suggests restoring a youthful gut microbiome may curb age-related liver damage and cancer risk

Swedish team restores blood sugar control in diabetic mice

يستخدم هذا الموقع ملفات تعريف الارتباط