دراسة على الفئران تربط بين تراجع بروتين دماغي والشيخوخة

24 مايو، 2026

من إعداد الذكاء الاصطناعي

كشفت دراسة أجريت عام 2023 أن انخفاض مستويات بروتين "مينين" في منطقة تحت المهاد يؤدي إلى ظهور علامات متعددة للشيخوخة لدى الفئران. وقد أدى استعادة هذا البروتين أو تناول مكملات الحمض الأميني "دي-سيرين" إلى تحسين الذاكرة ومؤشرات أخرى.

أظهر باحثون في جامعة شيامن بالصين أن مستويات بروتين "مينين" تنخفض بشكل حاد في جزء معين من منطقة تحت المهاد مع تقدم الفئران في العمر. وعندما قام الباحثون بخفض مستويات هذا البروتين لدى الفئران الأصغر سناً، عانت تلك الفئران من التهابات في الدماغ، وضعف في العظام، وترقق في الجلد، وتدهور في التوازن، وفقدان في الذاكرة، وقصر في العمر الافتراضي.

UCSF study links iron-associated protein FTL1 to age-related memory decline in mice

5 أبريل، 2026 من إعداد الذكاء الاصطناعي صورة مولدة بواسطة الذكاء الاصطناعي تم التحقق من الحقائق

Researchers at the University of California, San Francisco report that higher levels of the iron-associated protein FTL1 in the hippocampus of older mice are tied to weaker neural connections and worse performance on cognitive tests. In the experiments, reducing FTL1 in older mice was associated with increased neuronal connectivity and improved memory performance, findings published in Nature Aging.

Scientists call for multi-pronged strategies against Alzheimer's

A team of researchers led by Professor Yan-Jiang Wang has published a review arguing that Alzheimer's disease requires integrated treatments targeting multiple factors, not single causes. New drugs like lecanemab and donanemab offer modest benefits by slowing decline, but fall short of reversal. The paper, in Science China Life Sciences, emphasizes genetics, aging, and systemic health alongside amyloid-beta and tau proteins.

Scientists restore memory in Alzheimer's mice by blocking PTP1B

30 أبريل، 2026 من إعداد الذكاء الاصطناعي

Researchers at Cold Spring Harbor Laboratory have found that blocking the protein PTP1B improves memory and boosts plaque clearance in mouse models of Alzheimer's disease. The discovery links the protein to brain immune function and metabolic risks like diabetes and obesity. The team aims to develop inhibitors for potential human treatments.

أوروبا

Higher meat intake slows Alzheimer's decline for APOE4 carriers, Karolinska study shows

صحة

Study finds lower normal B12 levels tied to brain changes

صحة

Lifelong cognitive enrichment tied to lower Alzheimer’s risk and later symptom onset, study finds

Scientists raise MeCP2 levels by shifting MECP2 splicing in early Rett syndrome studies

Researchers at Texas Children’s Hospital’s Duncan Neurological Research Institute and Baylor College of Medicine report an experimental gene-targeting approach designed to increase levels of the MeCP2 protein disrupted in Rett syndrome. In mouse experiments and neurons derived from patient cells, the strategy boosted MeCP2 and partially restored cellular structure, electrical activity and gene-expression patterns, according to findings published in Science Translational Medicine.

Strategies to Reduce Peripheral Inflammation and Alzheimer's Risk

6 مارس، 2026 من إعداد الذكاء الاصطناعي

Building on genomic research linking Alzheimer's origins to inflammation in peripheral tissues like the gut, lungs, or skin, practical lifestyle measures can help curb chronic inflammation. These include vaccination, oral hygiene, diet, exercise, weight control, and stress management, offering benefits for overall health amid evolving science.

17 مايو 2026 10:10

دراسة على الفئران تربط بين تراجع بروتين دماغي والشيخوخة

مقالات ذات صلة

UCSF study links iron-associated protein FTL1 to age-related memory decline in mice

Scientists call for multi-pronged strategies against Alzheimer's

Scientists restore memory in Alzheimer's mice by blocking PTP1B

Higher meat intake slows Alzheimer's decline for APOE4 carriers, Karolinska study shows

Study finds lower normal B12 levels tied to brain changes

Lifelong cognitive enrichment tied to lower Alzheimer’s risk and later symptom onset, study finds

Scientists raise MeCP2 levels by shifting MECP2 splicing in early Rett syndrome studies

Strategies to Reduce Peripheral Inflammation and Alzheimer's Risk

Nanoparticles reduced amyloid-β and improved cognition in an Alzheimer’s mouse model, researchers report

Higher midlife vitamin D levels linked to lower brain tau protein

New blood test spots Alzheimer's via protein shape changes

Study links Alzheimer's origins to peripheral inflammation

Scientists map aging across 21 mouse organs with 7 million cells

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