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دراسة تكشف أسرار مقاومة الشيخوخة لدى حيوان بري عمره نحو 194 عاما

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By سبوتنيك عربي · 17 hours ago · 1 min read سبوتنيك عربي ↗

ملخص الخبر

  • كشفت دراسة علمية عن مؤشرات جينية تفسر طول عمر السلحفاة العملاقة جوناثان التي يبلغ عمرها نحو 194 عاما.
  • حدد الباحثون 287 متغيرا جينيا تتعلق بقدرة الخلايا على مقاومة الأضرار المتراكمة وإصلاح الحمض النووي والحد من الالتهابات.
  • يرجح الباحثون أن بطء عمليات الأيض لدى السلاحف العملاقة يساهم في تقليل تراكم الأضرار الخلوية والجينية بمرور الوقت.
  • أظهرت النتائج مؤشرات لافتة تتعلق بالميتوكوندريا المسؤولة عن إنتاج الطاقة داخل الخلايا لدى السلحفاة جوناثان.

ملخص كتبه الذكاء الاصطناعي من نص الخبر في مصدره.

كشفت دراسة علمية حديثة عن مؤشرات جينية قد تساعد في تفسير طول العمر الاستثنائي لدى السلاحف العملاقة، من خلال تحليل المادة الوراثية للسلحفاة “جوناثان”، التي يعتقد أن عمرها يبلغ نحو 194 عاما، وتعد أقدم حيوان بري معروف على قيد الحياة.

المصدر: سبوتنيك عربي

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