Abstract：
:Aging is associated with a change in membrane composition that includes a decrease in membrane polyunsaturated fatty acids, including arachidonic acid, and an increase in membrane cholesterol. Alterations in membrane structure are likely to impact on transmitter release, which relies on the fusion of synaptic plasma and synaptic vesicle membranes, and it may therefore be the underlying cause of the age-related decrease in glutamate release in hippocampal preparations. Recent evidence indicates that interleukin-1, by binding with its receptor, inhibits glutamate release in hippocampal synaptosomes prepared from young but not aged rats. The age-related attenuated effect may be due to impaired ligand-receptor interactions arising from the change in membrane composition, which should theoretically be reversed by increasing membrane polyunsaturated fatty acid concentration. To test this hypothesis, we have investigated the effect of a diet supplemented with arachidonic acid and its precursor, gamma-linolenic acid, on membrane arachidonic acid concentration, glutamate release and on the release response to interleukin-1 in hippocampal tissue prepared from aged and young rats. We report that dietary supplementation reversed the age-related changes in membrane arachidonic acid and expression of IL-1beta. We also present data that indicate that the age-related decrease in glutamate release from hippocampal synaptosomes was reversed in aged animals that had been fed on the experimental diet. The data support the view that changes in membrane composition contribute to certain age-related deficits, in particular the decrease in glutamate release observed in hippocampal synaptosomes.
journal_name
Exp Gerontoljournal_title
Experimental gerontologyauthors
McGahon B,Murray CA,Clements MP,Lynch MAdoi
10.1016/s0531-5565(97)00130-7subject
Has Abstractpub_date
1998-06-01 00:00:00pages
343-54issue
4eissn
0531-5565issn
1873-6815pii
S0531-5565(97)00130-7journal_volume
33pub_type
杂志文章abstract：:Increased lifespan can be associated with greater resistance to many different stressors, most notably thermal stress. Such hormetic effects have also been found in C. elegans where short-term exposure to heat lengthens the lifespan. Genetic investigations have been carried out using mutation perturbations in a single...
journal_title：Experimental gerontology
pub_type： 杂志文章
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abstract：:Primary cultures of hepatocytes are widely used to investigate liver function, but this technology has not been exploited fully in the study of ageing and caloric restriction (CR). Hepatocytes were isolated from adult and aged, fully fed, and calorie restricted male Sprague-Dawley rats and their viability and biochemi...
journal_title：Experimental gerontology
pub_type： 杂志文章
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更新日期：2000-08-01 00:00:00
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journal_title：Experimental gerontology
pub_type： 杂志文章
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更新日期：2021-01-01 00:00:00
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journal_title：Experimental gerontology
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更新日期：1987-01-01 00:00:00
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journal_title：Experimental gerontology
pub_type： 杂志文章
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journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/s0531-5565(03)00111-6
更新日期：2003-07-01 00:00:00
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journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2018.01.009
更新日期：2018-03-01 00:00:00
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journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2013.02.001
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journal_title：Experimental gerontology
pub_type： 杂志文章,评审
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journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/0531-5565(89)90022-3
更新日期：1989-01-01 00:00:00
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journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/0531-5565(96)00031-9
更新日期：1996-09-01 00:00:00
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journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2006.04.006
更新日期：2006-08-01 00:00:00
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journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2015.12.002
更新日期：2016-02-01 00:00:00
abstract：:Studying the changes of serum N-glycome during mouse aging is beneficial to explore the molecular basis behind the alterations reported in human. However, such studies remainscarce and lack some information such as sialylation due to the method limitation. Here, we introduced Bionic Glycome method to quantify the seru...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2020.111098
更新日期：2020-11-01 00:00:00
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journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2021.111245
更新日期：2021-01-19 00:00:00
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journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/s0531-5565(02)00149-3
更新日期：2003-01-01 00:00:00
abstract：:Post-translational oxidative protein modifications which are more marked during aging and/or high-calorie (HC) diets affect protein function and metabolism. Protein function and metabolism are different according to the type of muscle proteins. Oxidative muscle protein modifications may thus be associated with age-rel...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2011.11.007
更新日期：2012-02-01 00:00:00
abstract：INTRODUCTION:The ageing process can be influenced by different dietary patterns and dietary factors. AIM:To analyse the association of dietary factors, which include the Mediterranean diet adherence, the compliance with the "Sociedad Española de Nutrición Comunitaria" food portion recommendations, and the intake of di...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2019.01.019
更新日期：2019-05-01 00:00:00
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journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2006.04.007
更新日期：2006-08-01 00:00:00
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journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/0531-5565(88)90020-4
更新日期：1988-01-01 00:00:00
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journal_title：Experimental gerontology
pub_type： 杂志文章,评审
doi：10.1016/j.exger.2017.12.019
更新日期：2018-07-01 00:00:00
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journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2015.05.003
更新日期：2015-09-01 00:00:00
abstract：:Age-related sleep impairments are chronic and common, occurring even in the absence of diagnosable disorders. Additional loss of sleep occurs with clinical sleep disorders, many of which can be ameliorated. This literature, reviewed below, raises the question of the possible biological consequences of age-related, chr...
journal_title：Experimental gerontology
pub_type： 杂志文章,评审
doi：10.1016/j.exger.2004.06.023
更新日期：2004-11-01 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：:Light and electron microscope comparisons were made of parotid and submandibular glands from male Swiss-Webster white mice 3, 13, and 18 months old. The glands from the 13- and 18-month-old mice were less organized and the parenchyma was not as dense. Fibrous connective tissue, intracellular lipofuscin granules, and r...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/0531-5565(88)90007-1
更新日期：1988-01-01 00:00:00
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journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2020.111222
更新日期：2020-12-29 00:00:00
abstract：:The A3243G mutation, one of the changes of human mitochondrial DNA (mtDNA) that accumulates in cells during aging, is a useful marker for investigating the aging of cells. We measured the mutation level of the mtDNA A3243G mutation using DNAs from two different tissues (esophageal epithelium and myocardium) from advan...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/s0531-5565(02)00020-7
更新日期：2002-07-01 00:00:00
abstract：:The content and synthesis of GABA were measured in the cortex and striatum of young adult (4 months), mature (14 months), and old (24 months) male Wistar rats. GABA synthesis was determined from the GABA accumulation induced by aminooxyacetic acid (AOAA). Aging did not affect GABA content in the cortex (1.03 +/- 0.04 ...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/0531-5565(90)90020-3
更新日期：1990-01-01 00:00:00
abstract：:The achievement that cytokines and all the related "transducing machinery" are expressed within the central nervous system and play a consistent role in the modulation of neurological functions and dysfunctions, has allowed a novel interpretation of brain behaviour. In this view, neuroinflammation and cytokines produc...
journal_title：Experimental gerontology
pub_type： 杂志文章,评审
doi：10.1016/j.exger.2010.09.008
更新日期：2011-02-01 00:00:00
