Variations in Senescence and Longevity Include the Possibility of Negligible Senescence

نویسندگان

چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Negligible Senescence

In the development of a “new evolutionary genetics of aging” there is one issue that, in my opinion, requires additional attention: negligible senescence. Trees with longevities of hundreds of years or small invertebrates, like the hydra, that appear immortal seem to defy traditional theories of aging. Can we imagine a scenario in which Hamiltonian forces of natural selection never decline? Can...

متن کامل

Update on slow aging and negligible senescence--a mini-review.

This review updates developments of the concept of negligible senescence, proposed in Longevity, Senescence, and the Genome in 1990, with new information for turtles, rockfish, and the naked mole-rat. However, centenarians certainly do not show negligible senescence.

متن کامل

Senescence and longevity in amniotic fluid derived cells

Amniotic fluid stem cells (AFSC) are noncontroversial and abundant potentially transplantable cells. They are derived from fetal and amniotic sources and show osteogenic, neuronal, and adipogenic differentiation in culture. Clinical material must be expanded in culture and sorted if clinical use is desired. Cellular senescence and replicative potential for AFSC cultures has had limited study, w...

متن کامل

Is There any Mean to Postpone The Menopausal Ovarian Senescence?

The ovarian reserve (OR) gradually decreases throughout the female fertile life. This continuous depletion in OR is irreversible. This occurs through a programmed cell death known apoptosis. Some factors hasten such depletion such as chemo- and radiotherapy. Others have been investigated in trials to preserve the OR including gonadotropins, cytokines, growth hormones, nitric oxide and reorganiz...

متن کامل

modeling leaf production and senescence in wheat

this experiment was conducted to quantify leaf production and senescence in wheat. the experiment was carried out at research farm of the gorgan university of agricultural sciences and natural resources, gorgan, iran in 2005 using a randomized complete design considering sowing dates as environment. treatments were sowing date (14 december, 20 jan and 21 feb, 2005) and cultivars (aria, atrak, k...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: The Journals of Gerontology Series A: Biological Sciences and Medical Sciences

سال: 1998

ISSN: 1079-5006,1758-535X

DOI: 10.1093/gerona/53a.4.b235