Abstract：
:The goal of these experiments was to determine if the increased longevity characteristics of our genetically selected long lived line of Drosophila could be attributed to metabolic differences. The data shows an inverse relationship between life span and temperature for both the long lived (L) and normal (R) strains; however, the higher longevity of the L strain relative to the R strain is not affected by these treatments. Therefore, the genetic factors unique to the L strain do not affect the same processes affected by the temperature treatments. A second set of experiments detected a linear relationship between the MDMR (mean daily metabolic rate) and the ambient adult temperature. However, at each temperature, the MDMR of either strain was statistically equivalent; a finding which demonstrates that an increased life span depends on something other than conservation of calories. A third set of experiments looked at the metabolic efficiency of the two strains and were not able to detect any statistically significant differences. The two strains appear to expend approximately equivalent numbers of calories per day in an approximately equivalent manner. These data are interpreted in the context both of a previously postulated genetic switch mechanism believed responsible for initiating the onset of senescence, and of contemporary reinterpretations of the "rate of living" theory which implicates the essential role of various anti-oxidant defense systems.
journal_name
Exp Gerontoljournal_title
Experimental gerontologyauthors
Arking R,Buck S,Wells RA,Pretzlaff Rdoi
10.1016/0531-5565(88)90020-4subject
Has Abstractpub_date
1988-01-01 00:00:00pages
59-76issue
1eissn
0531-5565issn
1873-6815journal_volume
23pub_type
杂志文章abstract：:Aging is associated with a reduction in the maximum density of n-methyl-d-aspartate (NMDA)-sensitive glutamate binding sites in the hippocampus of Fischer 344 rats. This study was designed to investigate the effect of acetyl-l-carnitine (ALCAR) on NMDA receptors in the old rat (24 months) after chronic or single-dose ...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/0531-5565(93)90042-c
更新日期：1993-11-01 00:00:00
abstract：:The maximal lifespan (MLS) of mammals is inversely correlated with the peroxidation index, a measure of the proportion and level of unsaturation of polyunsaturated fatty acids (PUFA) in membranes. This relationship is likely related to the fact that PUFA are highly susceptible to damage by peroxidation. Previous compa...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2015.08.011
更新日期：2015-10-01 00:00:00
abstract：:Based on evidence that human diploid fibroblasts (HDF) from the Werner syndrome (WS) of premature aging might overexpress an inhibitor of DNA synthesis (IDS), we prepared a eukaryotic cDNA expression library from WS mRNA and tested it for IDS activity in a transient assay. Two of six WS cDNA pools tested gave IDS acti...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/0531-5565(89)90052-1
更新日期：1989-01-01 00:00:00
abstract：:The binding of advanced glycation endproducts (AGEs) to their receptors is known to cause changes in cell function during normal ageing and is implicated in the pathogenesis of cardiovascular disease. In this study, expression of the AGE-receptor 3 (AGE-R3) and the receptor for AGEs (RAGE) was compared on the mRNA and...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2003.12.006
更新日期：2004-03-01 00:00:00
abstract：:Studying renal function in subjects with a familial propensity for longevity may provide insight in (un)known mechanisms that determine the age-related decline in renal function of normal subjects. In the Leiden Longevity Study, middle-aged offspring of non-agenarian siblings and their partners as environmentally matc...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2013.12.012
更新日期：2014-03-01 00:00:00
abstract：:Injured skeletal muscle generally regenerates less efficiently with age, but little is understood about the effects of ageing on the very early inflammatory and neovascular events in the muscle repair process. This study used a total of 174 whole muscle grafts transplanted within and between young and old mice to anal...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2008.02.005
更新日期：2008-06-01 00:00:00
abstract：:To test if the adrenocortical axis of the rat loses sensitivity to negative feedback control during aging, we examined corticosterone secretion under basal, stressed and post-stress conditions in young and in aged Fisher male rats. We find no age-related change in the speed or magnitude of the stress response or in th...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/0531-5565(83)90051-7
更新日期：1983-01-01 00:00:00
abstract：:Reflective of age-associated decline in immune function among elderly individuals is a decrease in in vitro T cell proliferative ability. Impaired T cell proliferation in the elderly may result from disruption of the well-balanced network of regulatory cytokines produced during an immune response. The purpose of this ...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/s0531-5565(98)00064-3
更新日期：1999-04-01 00:00:00
abstract：BACKGROUND:The impact of regular exercise habits at middle-age on muscle mass and function at old age remains inconclusive. While regular exercise likely represents a primary source of health-enhancing physical activity (PA), the physical demand of occupation needs to be considered. Additionally, PA level at old age sh...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2021.111259
更新日期：2021-01-28 00:00:00
abstract：:With many caveats to the traditional vertebrate species pertaining to biogerontology investigations, it has been suggested that a most informative model is the one which: 1) examines closely related species, or various members of the same species with naturally occurring lifespan variation, 2) already has adequate med...
journal_title：Experimental gerontology
pub_type： 杂志文章,评审
doi：10.1016/j.exger.2015.08.008
更新日期：2015-11-01 00:00:00
abstract：:The hypotheses were: HISS-dependent insulin resistance (HDIR) accounts for insulin resistance that occurs with aging; HDIR is the initiating metabolic defect that leads progressively to type 2 diabetes and the metabolic syndrome; a synergistic antioxidant cocktail in chow confers protection against HDIR, subsequent sy...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2008.04.013
更新日期：2008-08-01 00:00:00
abstract：OBJECTIVES:1) To determine if there was a practice effect associated with walk tests performed by frail older adults with and without dementia, 2) to examine the role of systematic cueing in the walk tests for those with dementia, and 3) to make recommendations to testing protocols of the walk tests for frail older adu...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2019.110648
更新日期：2019-09-01 00:00:00
abstract：:The CG9940 gene, which encodes the NAD(+) synthase protein in Drosophila, is conserved in human, zebra fish, and mosquito. NAD(+) synthase is a homodimer, which catalyzes the final step in de novo nicotinamide adenine dinucleotide (NAD(+)) biosynthesis, an amide transfer from either ammonia or glutamine to nicotinic a...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2016.07.006
更新日期：2016-10-01 00:00:00
abstract：:At 11 and 30 degrees C there was no change in the amount or in the buoyant density of nuclear DNA of male Oregon R Drosophila melanogaster with aging. When normal flies were maintained at 11 degrees C (at which temperature they do not fly), mitochondrial DNA content declined gradually with aging and 39.4% of the origi...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/0531-5565(87)90048-9
更新日期：1987-01-01 00:00:00
abstract：:We studied the contractile, histological and biochemical characteristics of regenerating slow (soleus) muscles of aged rats and the effect of IGF-1 treatment on these parameters. Regenerating soleus muscles were studied 21 days after myotoxic injury. In senescent rats (24 month old), the in situ isometric maximal teta...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/s0531-5565(03)00007-x
更新日期：2003-05-01 00:00:00
abstract：:Aging is associated with a progressive decline of muscle mass, strength, and quality, a condition described as sarcopenia of aging. Despite the significance of skeletal muscle atrophy, the mechanisms responsible for the deterioration of muscle performance are only partially understood. The purpose of this review is to...
journal_title：Experimental gerontology
pub_type： 杂志文章,评审
doi：10.1016/j.exger.2008.05.003
更新日期：2009-01-01 00:00:00
abstract：:Aging is an independent risk factor for the development of atherosclerosis, a vascular abnormality that plays a significant role in the development of many cardiovascular disorders. Animal experiments have demonstrated that aging predisposes the vasculature to advanced atherosclerotic disease and vessel injury and tha...
journal_title：Experimental gerontology
pub_type： 杂志文章,评审
doi：10.1016/s0531-5565(99)00036-4
更新日期：1999-07-01 00:00:00
abstract：OBJECTIVE:Depression is common in hemodialysis patients. Reduced DHEA-S levels have been shown to be associated with depression in general population. Abnormalities in hormone production and metabolism are found in hemodialysis patients. However, the association between DHEA-S levels and depression in hemodialysis pati...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2009.08.009
更新日期：2009-11-01 00:00:00
abstract：:The role of the glucocorticoid receptor (GR) in senescence was studied in rats of increasing age. Statistically significant changes in the number of GRs from rat liver were detected, whereas the affinity for the ligand triamcinolone acetonide (TA) did not change with increasing age, and was in the range of 1-2 nM. In ...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/s0531-5565(99)00067-4
更新日期：1999-12-01 00:00:00
abstract：:Brain aging, Alzheimer disease and stroke share common elements of deficits in calcium regulation, declines in mitochondrial function, increases in generation of reactive oxygen species (ROS), accumulated damage from ROS and immune system dysfunction. The problem is to distinguish less significant side reactions, such...
journal_title：Experimental gerontology
pub_type： 杂志文章,评审
doi：10.1016/s0531-5565(00)00121-2
更新日期：2000-12-01 00:00:00
abstract：BACKGROUND/AIM:Age-related metabolic diseases are often associated with low-grade inflammation. The aim of the present study was to investigate the role of the transcriptional co-activator PGC-1α in the potential beneficial effects of exercise training and/or resveratrol in the prevention of age-associated low-grade in...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2013.07.015
更新日期：2013-11-01 00:00:00
abstract：:Over the last 40 years it has become clear that telomeres, the end of the chromosomes, and the enzyme telomerase reverse transcriptase (TERT), which is required to counteract their shortening, play a pivotal role in senescence and aging. However, over the last years several studies demonstrated that TERT belongs to th...
journal_title：Experimental gerontology
pub_type： 杂志文章,评审
doi：10.1016/j.exger.2014.02.011
更新日期：2014-08-01 00:00:00
abstract：INTRODUCTION:Chronically elevated circulating inflammatory markers are common in older persons but mechanisms are unclear. Many blood transcripts (>800 genes) are associated with interleukin-6 protein levels (IL6) independent of age. We aimed to identify gene transcripts statistically mediating, as drivers or responder...
journal_title：Experimental gerontology
pub_type： 杂志文章,多中心研究
doi：10.1016/j.exger.2015.05.012
更新日期：2015-10-01 00:00:00
abstract：:Impaired tolerance to ischemia-reperfusion in older hearts may stem in part from alterations in purine catabolism, impacting on maintenance of energy state and protective signaling via extracellular adenosine. We characterized effects of aging on normoxic and post-ischemic purine metabolism in hearts from young (2-4 m...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2003.08.003
更新日期：2003-10-01 00:00:00
abstract：:Age- and sex-associated differences in lipid peroxidation (LPO), and total sialic acid content (TSA) in response to abuse of drugs have been reported both in humans and experimental animals. However, no data on the influence of gender and age on these parameters have been reported for methionine-enkephalin (MENK). In ...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/s0531-5565(02)00118-3
更新日期：2002-12-01 00:00:00
abstract：:Synaptic disturbances may play a key role in the pathophysiology of Alzheimer's disease. To characterize differential synaptic alterations in the brains of Alzheimer patients, chromogranin A, chromogranin B and secretoneurin were applied as soluble constituents for large dense core vesicles, synaptophysin as a vesicle...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2003.09.018
更新日期：2004-01-01 00:00:00
abstract：:In muscles, sarcopenia, the loss of muscle mass, is the major cause of aging-related functional decline and frailty. Several factors are correlated with sarcopenia during aging, including contraction-related cellular injury, oxidative stress, endocrine changes and reduced regenerative potential. However the involvemen...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2005.12.004
更新日期：2006-03-01 00:00:00
abstract：:A number of recent studies of aging in Drosophila, mice and dogs have shown an association between reduced body size and increased lifespan. It is unclear (a) whether such an association is a general feature of animal species; and (b) whether the association reflects an effect of body size on aging, or pleiotropic eff...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/s0531-5565(02)00147-x
更新日期：2003-01-01 00:00:00
abstract：:Indigenous DNA adducts (I-compounds) are considered to be a biomarker of aging tissues. Thus far, few studies have been conducted to investigate the accumulation patterns of I-compounds in the brain during aging. Particularly, identities of age-dependent I-compounds have largely remained unknown. In the current study,...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/0531-5565(95)02027-6
更新日期：1996-05-01 00:00:00
abstract：BACKGROUND:Resistance exercise training (RET) has proven effective at reducing the risk of chronic disease in older populations, and it appears to regulate redox homeostasis. AIMS:To determine the effects of RET on redox homeostasis in older people. STUDY DESIGN:A systematic review and meta-analysis of randomized cli...
journal_title：Experimental gerontology
pub_type： 杂志文章,评审
doi：10.1016/j.exger.2020.111012
更新日期：2020-09-01 00:00:00
