Results 31 to 40 of about 743,359 (233)
Frontiers in Physiology, 2022 The expression of life-history traits, such as lifespan or reproductive effort, is tightly correlated with the amount and blend of macronutrients that individuals consume.
Kevin Malod +4 more
doaj +1 more source
Gerontology and Geriatric Medicine, 2022 Purpose: This systematized review presents a synthesis of epidemiological studies that examine the association between female reproductive factors and longevity indicators. Methods: A comprehensive literature search was conducted using four bibliographic
Christy Costanian PhD +5 more
doaj +1 more source
Reduction of DILP2 in Drosophila triages a metabolic phenotype from lifespan revealing redundancy and compensation among DILPs [PDF]
, 2008 The insulin/IGF-like signalling (IIS) pathway has diverse functions in all multicellular organisms, including determination of lifespan. The seven insulin-like peptides (DILPs) in Drosophila are expressed in a stage- and tissue-specific manner.
Vinti, Giovanna +9 more
core +6 more sources
Theory and associated phenomenology for intrinsic mortality arising from natural selection. [PDF]
PLoS ONE, 2017 Standard evolutionary theories of aging and mortality, implicitly based on assumptions of spatial averaging, hold that natural selection cannot favor shorter lifespan without direct compensating benefit to individual reproductive success.
Justin Werfel +2 more
doaj +1 more source
Lack of intergenerational reproductive conflict, rather than lack of inclusive fitness benefits, explains absence of post-reproductive lifespan in long-finned pilot whales. [PDF]
Behav Ecol, 2023 Life-history theory suggests that individuals should reproduce until death, yet females of a small number of mammals live for a significant period after ceasing reproduction, a phenomenon known as post-reproductive lifespan.
McCormack JL +4 more
europepmc +2 more sources
Asian elephants exhibit post-reproductive lifespans
BMC Evolutionary Biology, 2019 Background The existence of extended post-reproductive lifespan is an evolutionary puzzle, and its taxonomic prevalence is debated. One way of measuring post-reproductive life is with post-reproductive representation, the proportion of adult years lived ...
Simon N. Chapman +4 more
doaj +1 more source
Scientific Reports, 2022 Although once considered uncommon, there is growing evidence of widespread senescence in wildlife populations. However, few studies have examined the traits involved, inter-sexual differences, and environmental correlates of age-specific performance in ...
Jabi Zabala +3 more
doaj +1 more source
Antioxidants, 2015 The oxidative stress theory predicts that the accumulation of oxidative damage causes aging. More generally, oxidative damage could be a cost of reproduction that reduces survival. Both of these hypotheses have mixed empirical support.
C. Ruth Archer +7 more
doaj +1 more source
CD38 regulates ovarian function and fecundity via NAD+ metabolism
iScience, 2023 Summary: Mammalian female reproductive lifespan is typically significantly shorter than life expectancy and is associated with a decrease in ovarian NAD+ levels. However, the mechanisms underlying this loss of ovarian NAD+ are unclear. Here, we show that
Rosalba Perrone +17 more
doaj +1 more source
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Establishing a comprehensive apheresis medicine program in a resource‐constrained setting presents significant structural, financial, and logistical challenges. Despite the growing clinical importance of apheresis services globally, published experience from sub‐Saharan Africa remains sparse.
Folasade Adelekan‐Popoola +4 more
wiley +1 more source