Abstract：
:In an attempt to provide additional quantitative markers of senescence in the nematode Caenorhabditis elegans, we have identified age-dependent increases in four lysosomal enzymes: acid phosphatase, beta-N-acetyl-D-glucosaminidase, beta-D-glucosidase, and alpha-D-mannosidase. These enzymes were judged to be lysosomal on the basis of their resemblance to analogous mammalian lysosomal enzymes with regard to subcellular fractionation, lectin binding, Km, molecular weights, inhibitor sensitivities, and pH optima. In nematode populations which had a median lifespan of 8.9 +/- 0.7 days and a maximum lifespan of 14-16 days, we observed the following increases in acid hydrolase activities per animal from day 3 (early adulthood) to day 10: (1) up to 2.5-fold for acid phosphatase; (2) 8-fold for beta-N-acetyl-D-glucosaminidase; (3) 9-fold for beta-D-glucosidase; and (4) 4-fold for alpha-D-mannosidase. Three forms of acid phosphatase and two forms of beta-D-glucosidase were separated by ion-exchange chromatography, but in each case only one form of the enzyme was primarily responsible for the age-dependent increase in total activity: acid phosphatase I increased 18-fold, while beta-D-glucosidase I increased 100-fold. By contrast, there were only slight age-dependent changes in choline acetyltransferase, acetylcholinesterase, or alpha-D-glucosidase activities after early adulthood. The age-dependent increases in acid phosphatase, beta-N-acetyl-D-glucosaminidase, beta-D-glucosidase, and alpha-D-mannosidase activities are sufficiently large and reproducible to be useful quantitative markers of senescence in C. elegans.
journal_name
Mech Ageing Devjournal_title
Mechanisms of ageing and developmentauthors
Bolanowski MA,Jacobson LA,Russell RLdoi
10.1016/0047-6374(83)90048-9subject
Has Abstractpub_date
1983-03-01 00:00:00pages
295-319issue
3-4eissn
0047-6374issn
1872-6216pii
0047-6374(83)90048-9journal_volume
21pub_type
杂志文章abstract：:Alpha-synuclein (syn) is the main component of proteinaceous inclusions known as Lewy bodies (LBs), which are implicated in the pathogenesis of the neurodegenerative diseases known as synucleinopathies, like Parkinson's disease (PD). Aging is a major risk factor for PD and thus, interventions that delay aging will hav...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/j.mad.2016.04.006
更新日期：2017-01-01 00:00:00
abstract：:Mouse mammary gland displays an irreversible decline in growth rate when propagated by serial transplantation in gland-free mammary fat pads of isogeneic mice. Because transplanted fragments of gland contain both mammary epithelial and stromal elements, the present study was undertaken to distinguish between two possi...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(83)90026-x
更新日期：1983-11-01 00:00:00
abstract：:Senescence is a biological process that induces a permanent cell cycle arrest and a specific gene expression program in response to various stressors. Following studies over the last few decades, the concept of senescence has evolved from an antiproliferative mechanism in cancer (oncogene-induced senescence) to a crit...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/j.mad.2020.111411
更新日期：2020-12-09 00:00:00
abstract：:Age-adjusted mortality rates for breast cancer (BC) in the United States from 1962 to 1987 were subjected to longitudinal Gompertzian analysis. Age-adjusted BC mortality rate distributions for women display two distinct Gompertzian slopes. Between age 15 and 40 years, age-adjusted BC mortality rate distributions inter...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(91)90125-j
更新日期：1991-10-01 00:00:00
abstract：:Protein carbonyls were studied in aging and exercise by immunoblot followed by one- or two-dimensional polyacrylamide gel electrophoresis using antibodies against 2,4-dinitrophenylhydrazones. Proteins of rat kidneys exhibited significant age-related increase in the amount of carbonyl while those of the brain and liver...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章,评审
doi：10.1016/s0047-6374(98)00133-x
更新日期：1999-03-15 00:00:00
abstract：:In this article we review the abnormalities in immune function which have been described in relation to ageing. It is suggested that thymic involution may not be the only underlying cause. Many similar changes can be induced by the endotoxins from the cell walls of Gram-negative bacteria. The colon is a large reposito...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章,评审
doi：10.1016/0047-6374(84)90091-5
更新日期：1984-08-01 00:00:00
abstract：:Apoptosis plays a central role in the homeostasis of the immune system. During aging, there is an altered regulation of pivotal molecules that are responsible for the regulation of this type of cell death, such as those of the Fas/FasL system. Understanding the regulation of these genes can help to clarify, at least i...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章,评审
doi：10.1016/s0047-6374(03)00029-0
更新日期：2003-04-01 00:00:00
abstract：:Chromosome analyses and Ig level determinations were carried out on seventeen aged men and women, 83--100 years of age. In men, significant correlations were found between hypodiploidy and IgA (gamma = 0.95) and between monosomy C and IgG (gamma = 0.79) while in women, monosomy G and IgG were significantly correlated ...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(78)90039-8
更新日期：1978-12-01 00:00:00
abstract：:Changes in the T-lymphocyte compartment represent the most critical component of immunological aging. Recent studies have demonstrated that the age-related decline in T-cell-mediated immunity is a multifactorial phenomenon affecting T-cell subset composition as well as several proximal events such as protein tyrosine ...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章,评审
doi：10.1016/s0047-6374(99)00009-3
更新日期：1999-05-17 00:00:00
abstract：:The aim of the present study was to measure protein synthesis in regenerating liver and to evaluate the impact of malnutrition in young and old rats. Two groups of male Wistar rats were used: young rats (4 months old) and old rats (18 months old). The rats were allocated to malnutrition or ordinary food intake for 1 w...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(96)01779-4
更新日期：1996-10-04 00:00:00
abstract：:In adult rats 3, 6 and 9 months post-orchidectomy performed at the age of 30 days the thymus weight, thymocyte yield and relative proportions of thymocyte subsets (delineated by expression of CD4/CD8 molecules and TCRalphabeta) were analyzed in order to elucidate a putative role of male gonadal hormones in the shaping...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/s0047-6374(01)00399-2
更新日期：2002-02-01 00:00:00
abstract：:Epigenetic disruption has been implicated in many diseases of aging, and age-associated DNA methylation changes at specific genomic loci in humans are strongly correlated with chronological age. The aim of this study was to explore the specificity of selected age-associated differentially methylated positions (aDMPs) ...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/j.mad.2016.02.001
更新日期：2016-03-01 00:00:00
abstract：:Restriction of food intake extends lifespan in evolutionarily diverse organisms, including mammals. Dietary restriction (DR) also delays the appearance of ageing-related damage and pathology and keeps organisms in a youthful state for longer. DR has hence been suggested to lower the rate of ageing. Analysis of mortali...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章,评审
doi：10.1016/j.mad.2004.09.017
更新日期：2005-01-01 00:00:00
abstract：:The purpose of this study was to determine the feasibility of using a recently developed procedure, dual-energy x-ray absorptiometry, to determine body composition in rats as a function of aging. Results were obtained that were consistent with previous findings for male rats. ...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(93)90043-q
更新日期：1993-10-01 00:00:00
abstract：:The incidence of chronic diseases such as cardiovascular diseases is lower in Mediterranean Southern Europe than Northern Europe. This may be due to a lower level of oxidative stress and a higher antioxidant status in people living around the Mediterranean Sea. Oxidative stress may influence the rate of shortening of ...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/j.mad.2012.04.003
更新日期：2012-06-01 00:00:00
abstract：:DNA damage and mutations have been implicated as key causal events in the biological process of aging. In this context, it has been hypothesized that the complex of genome maintenance systems acts as a longevity assurance system by signaling and repairing damage or removing cells that are beyond repair. In the past, v...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章,评审
doi：10.1016/j.mad.2008.02.009
更新日期：2008-07-01 00:00:00
abstract：:Detailed structural, mutational, and biochemical analyses of human FEN1/DNA complexes have revealed the mechanism for recognition of 5' flaps formed during lagging strand replication and DNA repair. FEN1 processes 5' flaps through a previously unknown, but structurally elegant double-stranded (ds) recognition/single s...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章,评审
doi：10.1016/j.mad.2011.11.009
更新日期：2012-04-01 00:00:00
abstract：:In this review we discuss the yeast as a paradigm for the study of aging. The budding yeast Saccharomyces cerevisiae, which can proliferate in both haploid and diploid states, has been used extensively in aging research. The budding yeast divides asymmetrically to form a 'mother' cell and a bud. Two major approaches, ...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章,评审
doi：10.1016/s0047-6374(00)00182-2
更新日期：2000-12-01 00:00:00
abstract：:Some observations on cellular senescence are discussed regarding the possibility that the postulated genes, which bring about the DNA synthesis block of senescent fibroblasts, might be similar to those designated as anti-oncogenes or tumour suppressor genes. The latter genes have been defined by tumorogenicity tests o...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章,评审
doi：10.1016/0047-6374(90)90044-g
更新日期：1990-04-30 00:00:00
abstract：:Pituitary adenomas were the most common grossly visible naturally occurring neoplasms found in over 27% of rats surviving beyond 17 months of age. Twenty-three pituitary adenomas, fixed in buffered neutral formalin and embedded in paraffin, were tested for the presence of prolactin (PRL), growth hormone (GH) and thyro...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(82)90065-3
更新日期：1982-10-01 00:00:00
abstract：:Tumor cells express NADPH oxidase-1 (NOX1) in their membrane and control NOX1-based intercellular reactive oxygen and nitrogen species (ROS/RNS)-dependent apoptosis-inducing signaling through membrane-associated catalase and superoxide dismutase. TREATMENT:of tumor cells with high concentrations of H2O2, peroxnitrite...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/j.mad.2017.11.005
更新日期：2018-06-01 00:00:00
abstract：:Ageing is the most complex phenotype currently known, since it becomes manifest in all organs and tissues, affects an organism's entire physiology, impacts function at all levels and increases susceptibility to all major chronic diseases. Insight into the molecular and cellular targets of the ageing process would offe...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章,评审
doi：10.1016/s0047-6374(02)00163-x
更新日期：2003-01-01 00:00:00
abstract：:Menopause is characterized by the depletion of estrogen that has been proposed to cause oxidative stress. Circadian rhythm is an internal biological clock that controls physiological processes. It was analyzed the gene expression in peripheral blood mononuclear cells and the lipids and glucose levels in plasma of a su...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.mad.2017.04.002
更新日期：2017-06-01 00:00:00
abstract：:Previous studies from this laboratory have documented a progressive age-related decline in trophic hormone (or second messenger cAMP) stimulated corticosterone production in isolated adrenocortical cells. In the current study, we examined the possibility that the aging process exerts this effect by interfering with an...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(94)90043-4
更新日期：1994-11-25 00:00:00
abstract：:The purpose of this study was to test the hypothesis that regular exercise training in elderly people affects the type 1/type 2 balance. Nine elderly women who train by walking (mean+/-S.E.M., age 63+/-1 years, VO2 peak 32.2+/-1.0 ml kg(-1) min(-1)), 12 age-matched untrained women (63+/-1 years, 27.8+/-0.9 ml kg(-1) m...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/s0047-6374(03)00167-2
更新日期：2003-08-01 00:00:00
abstract：:We have developed a cell model for loss of differentiated gene expression in cellular aging. Over long periods in culture, bovine adrenocortical cells lose expression of a specialized gene, steroid 17 alpha-hydroxylase. The decline in expression of 17 alpha-hydroxylase in mass cultures and clones of bovine adrenocorti...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(91)90115-g
更新日期：1991-04-01 00:00:00
abstract：:Hutchinson-Gilford Progeria syndrome (HGPS) is a rare genetic disorder that displays features of segmental aging. It is manifested predominantly in connective tissue, with most prominent histological changes occurring in the skin, cartilage, bone and cardiovascular tissues. Detailed quantitative real time reverse-tran...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/j.mad.2006.03.004
更新日期：2006-08-01 00:00:00
abstract：:Understanding mechanisms underlying longevity, and endeavor towards the specific goals of alleviating frailty in old age, require a comprehensive approach that considers the various theoretical and experimental approaches, as well as compiling the data on humans. This logistic has underlined the program of the confere...
journal_title：Mechanisms of ageing and development
pub_type： 社论,评审
doi：10.1016/j.mad.2004.08.013
更新日期：2005-02-01 00:00:00
abstract：:Components of the calmodulin system (i.e., calmodulin levels and activities of the following calmodulin-dependent enzymes: Ca2+ + Mg2+-ATPase, adenylate and guanylate cyclases, cyclic AMP and cyclic GMP phosphodiesterases, and Ca2+-dependent protein kinase were studied in the following brain regions from immature (25-...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(86)90018-7
更新日期：1986-10-01 00:00:00
abstract：:Normal diploid Syrian hamster dermal mesenchymal cell strains, regardless of the age of the tissue of origin, exhibit in vitro cellular senescence. The frequency of spontaneous escape from senescence and conversion to a permanent cell line is less than 5% among replicate flasks. The overall pattern of senescence of ce...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(86)90032-1
更新日期：1986-04-01 00:00:00
