نتایج جستجو برای: accelerated aging
تعداد نتایج: 161819 فیلتر نتایج به سال:
Adequate energy stores are essential for survival, and sophisticated neuroendocrine mechanisms evolved to stimulate foraging in response to nutrient deprivation. Food search behavior is usually investigated in young animals, and it is not known how aging alters this behavior. To address this question in Drosophila melanogaster, we compared the ability to locate food by olfaction in young and ol...
Most of fungicides for prevention of biological degradation in historic papers, firstly have been used in the other scientific and industrial fields such as material preservation, agriculture and medical science. Other scientific fields have a great importance in the conservation of historic relics especially paper relics. Therefore, Tiophanate methyl and Carbendazim fungicides were studied for...
The effect of very low concentrations of Vitamin E on the stability and mechanical behavior of UHMWPE remains unknown. We tested the hypothesis that the oxidation resistance of Vitamin E-blended UHMWPE would be influenced by trace doses of antioxidant, resin, and radiation treatment. Trace concentrations (< or =500 ppm w/w%) of alpha-tocopherol (Vitamin E) were blended separately with GUR 1020 ...
Long-term exposure to air pollution is associated with age-related diseases. We explored the association between accelerated biological aging and air pollution, a potential mechanism linking air pollution and health. We estimated long-term exposure to PM10, PM2.5, PM2.5 absorbance/black carbon (BC), and NOx via land-use regression models in individuals from the KORA F4 cohort. Accelerated biolo...
Propellants are decomposed slowly during storage. So each propellant has useful life time which more than that time propellant is not safe and cannot used. Tracing of propellant stabilizer consumption is one of the important methods for determination of storage life time period of a propellant. In this article by accelerated aging on a double-base propellant and then chemical extraction of stab...
Mitochondrial dysfunction is involved in the development of aging. Here, we examined the effect of aging on the skeletal muscle expression of two isoforms of the transcriptional peroxisome proliferator-activated receptor gamma (PPARgamma) coactivator-1 (PGC-1) in an experimental murine model of accelerated aging, the senescence-accelerated mouse (SAM). The senescence-accelerated prone mice (SAM...
Previous work suggests that individuals with schizophrenia display accelerated aging of white matter integrity, however, it is still unknown whether functional brain networks also decline at an elevated rate in schizophrenia. Given the known degradation of functional connectivity and the normal decline in cognitive functioning throughout healthy aging, we aimed to test the hypothesis that effic...
Sustained high levels of corticosterone (CORT), one of the major stress-induced hormones in the rat, were suggested as generating 'accelerated brain aging' and were shown to induce both specific brain changes in the hippocampus and learning impairments in young and middle-aged Fischer-344 rats. Evidence that altered calcium (Ca) homeostasis may play a major role in brain aging has accumulated o...
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