Abstract：
:DNA-repair capacity, by incorporation in vitro of [3H]thymidine into DNA of isolated neuronal cells and splenic lymphocytes of rat was studied as a function of age. The incubations were carried out both in the presence and absence of hydroxyurea (HU), a known inhibitor of replicative DNA synthesis. The results indicate that neurons, unlike lymphocytes, obtained from adult and old animals offer a good model system to measure the DNA-repair process without any possible interference of DNA replicative synthesis. Further, the 'spontaneous' DNA repair by unscheduled DNA synthesis (UDS) in old neurons remained unchanged as compared to the adult level. However, the response of aging neurons, in contrast to that of young and adult neurons or of lymphocytes of any age, to a mutagenic challenge like UV light is limited. It is suggested that this lack of responsive DNA-repair against a given damage may lead to a general metabolic deterioration and senescence.
journal_name
Mech Ageing Devjournal_title
Mechanisms of ageing and developmentauthors
Subrahmanyam K,Rao KSdoi
10.1016/0047-6374(91)90053-3subject
Has Abstractpub_date
1991-03-01 00:00:00pages
283-91issue
3eissn
0047-6374issn
1872-6216pii
0047-6374(91)90053-3journal_volume
57pub_type
杂志文章abstract：:Rats of two age groups (6 weeks and 30 months) received (1) a single dose of 600 mg D-galactosamine (GalN)/kg body weight by intraperitoneal (i.p.) injection, (2) a single dose of 600 mg GalN/kg body weight i.p. combined with 20 mg prednisolone/kg body weight subcutaneously at the beginning of the experiment. The kine...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(78)90064-7
更新日期：1978-03-01 00:00:00
abstract：:There is now strong evidence implicating the generation of reactive oxygen species (ROS) and the corresponding response to oxidative stress as key factors in the pathogenesis of several human diseases including cancer, atherosclerosis, and neurodegenerative disorders, and in ageing. The carcinogenicity of oxidative st...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章,评审
doi：10.1016/j.mad.2006.01.021
更新日期：2006-05-01 00:00:00
abstract：:Hematopoietic stem cell performance and identity, crucial for homeostasis of the blood-forming system, is governed by extrinsic factors found in the bone marrow microenvironment. Communication within hematopoietic stem cell niches occurs via soluble factors or cell-to-cell contacts between niche and blood-forming cell...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章,评审
doi：10.1016/j.mad.2020.111329
更新日期：2020-10-01 00:00:00
abstract：:Extrachromosomal circular DNA complexes from peripheral blood lymphocytes from inbred mice of accelerated senescence, were detected by mica-press-adsorption method. In senescence-resistant series (SAM-R), polydisperse circular DNAs were observed at 7 weeks of age and a restricted size class of small circular forms of ...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(85)90051-x
更新日期：1985-01-01 00:00:00
abstract：:Long-term cultures of human umbilical endothelial cells were examined for changes in cell growth, cell density, cell volume, occurrence of multinucleated cells, prostacyclin production and negative charge of the cell surface during in vitro cellular ageing. The changes observed were consistent with the previously desc...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(88)90119-4
更新日期：1988-12-01 00:00:00
abstract：:Aging is characterized by a progressive loss of several physiological functions that can cause various age-related disorders. Several factors have been identified as causes of aging to elucidate the decline in functions. Various aspects of physiological deterioration are controlled by the hypothalamus, a critical brai...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章,评审
doi：10.1016/j.mad.2018.04.008
更新日期：2019-01-01 00:00:00
abstract：:Non-proliferative and proliferative myeloid, and lymphoid and erythroid bone marrow cells were studied in aging female C3H mice. A chronobiological approach was used and mice aged 16, 21 and 26 months were examined vs. 3 month-old mice every 3 h during the 24-h period in three different experiments. Significant circad...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(88)90065-6
更新日期：1988-01-01 00:00:00
abstract：:In mammals, proliferation is rapid in many tissues during early postnatal life, causing rapid somatic growth. This robust proliferation is then suppressed as the animal approaches adult size, bringing many tissues to a quiescent state where proliferation occurs only as needed to replace dying cells. Recent evidence su...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/j.mad.2010.08.010
更新日期：2010-10-01 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：:Senescence is thought to play an important role in the progressive age-related decline in tissue integrity and concomitant diseases, but not much is known about the complex interplay between upstream regulators and downstream effectors. We profiled whole genome gene expression of non-stressed and rotenone-stressed hum...
journal_title：Mechanisms of ageing and development
pub_type： 临床试验,杂志文章,多中心研究
doi：10.1016/j.mad.2012.06.002
更新日期：2012-07-01 00:00:00
abstract：:The survival rate was measured of differently aged rabbit erythrocytes that had been taken from young and old animals, tagged with 51Cr and injected into young and old animals. The survival rate of the donor erythrocytes depends mostly on the age of the recipient animals. The life span of the injected cells found in o...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(81)90063-4
更新日期：1981-11-01 00:00:00
abstract：:Following a 3 hour in vivo labelling of cytoplasmic RNA in rat liver with orotic acid-6-14C under conditions where ribosomal RNA synthesis was suppressed, the proportion of labelled messenger-like RNA released to the cytoplasm which contained polyadenylate (poly(A)) tracts was about 3.0 times higher in the livers of j...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(77)90026-4
更新日期：1977-07-01 00:00:00
abstract：:The binding of the lectin Concanavalin-A (Con-A) to crystallins was investigated. For this purpose, human fetal and juvenile lens crystallins were isofocused and specifically stained brown for glycoproteins by the lectin Con-A, and purple by the periodic acid Schiff's reagent (PAS). In reference experiments protein ba...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/s0047-6374(97)00097-3
更新日期：1997-12-30 00:00:00
abstract：:Experimental studies have not shown that the 'common' clinical experience, which suggests that wound healing is impaired in an old organism, is valid for healthy old experimental animals. We have developed a model in the rat for ischemic wound healing by using an H-shaped double skin flap, where the test wound is the ...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(91)90094-g
更新日期：1991-05-01 00:00:00
abstract：:Expression of dystrophin and the dystrophin-related protein utrophin has been studied in the human fetal brain both in vivo and in vitro. Results showed that both these proteins were developmentally regulated, even if their expression followed a different pattern. Utrophin was found since very early stages of developm...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/s0047-6374(01)00360-8
更新日期：2002-03-15 00:00:00
abstract：:Hepatic growth and protein synthesis in vivo was studied with age in ad libitum-fed and dietary restricted rats in which the mean and maximum lifespan was significantly extended. Livers from underfed rats showed significantly lower DNA, RNA and protein contents, and total protein synthesis. The fractional rate of synt...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(87)90008-x
更新日期：1987-07-01 00:00:00
abstract：:Published data on age-related human biological functions are surveyed. For the many showing a linear decrease, regressions were calculated, or existing functions extrapolated, to yield an intercept on the abscissa. The values of chi(0), the age at which a function ceases, provide a tentative common means of comparison...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章,评审
doi：10.1016/0047-6374(93)90072-y
更新日期：1993-06-01 00:00:00
abstract：:The protein synthesizing capacity of liver parenchymal cells isolated from 3-, 12-, 24-, 31- and 36-month-old rats was determined by the incorporation of 14C-leucine. Conditions for optimum protein synthesis included the use of an enriched medium (modified Waymouth's MB 752/1) and cell suspension concentrations rangin...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(77)90031-8
更新日期：1977-07-01 00:00:00
abstract：:The effect of aging on patterns of food intake and nutrient selection was investigated using a longitudinal study. Male (n = 10) and female (n = 10) Wistar-Lou rats from 4 to 28 months of age were repeatedly submitted to a macronutrient self-selection (S-S) regimen while controls were maintained under a standard chow ...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/s0047-6374(98)00013-x
更新日期：1998-07-15 00:00:00
abstract：:In the present work, we investigated whether IGF-1 regulates the transcription of the genes encoding the L-type Ca2+ channel (DHPR) channel and RyR1 in young adult and senescent mice. To this end, a transgenic mouse model overexpressing IGF-1 exclusively in skeletal muscle (S1S2) was studied at different ages and the ...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/s0047-6374(00)00236-0
更新日期：2001-04-15 00:00:00
abstract：:We investigated the Coenzyme Q (CoQ) content of different mitochondrial fractions [free mitochondria (FM), synaptic heavy (HM) and light mitochondria (LM)] from three brain areas (cortex, striatum, hippocampus) of rats at different ages. In rats from 2 to 26 months of age, we observed only small differences in total C...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(94)01535-t
更新日期：1995-03-17 00:00:00
abstract：:The serotonin content of platelets, serum and plasma from rats of various ages was examined. In male rats, platelet serotonin content, which was about 0.65 nmol/10(8) platelets at young age (6-7 months), increased slightly at middle age (12-14 months) but decreased markedly at old age (25-26 months). Significant diffe...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(89)90008-0
更新日期：1989-01-01 00:00:00
abstract：:T cell activation involves events at the plasma membrane; therefore, molecules such as long chain omega-3 fatty acids that alter the structure of the plasma membrane may affect the activation of aged T cells. In this project we investigated whether the incorporation of omega-3 fatty acids (from fish oil), in the prese...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(94)90079-5
更新日期：1994-08-01 00:00:00
abstract：:Certain anatomic and functional parameters of the eye change with increasing chronological age. They may, therefore, serve as potential biomarkers of ageing. We investigated associations between four such ocular parameters (lens density, retinal vessel calibre, corneal endothelial cells and retinal nerve fibre layer t...
journal_title：Mechanisms of ageing and development
pub_type： 临床试验,杂志文章,多中心研究
doi：10.1016/j.mad.2013.05.002
更新日期：2013-07-01 00:00:00
abstract：:Prostaglandin (PG) synthesis by human embryo lung fibroblasts in culture was determined with increasing population doubling. These cultures synthesized PGE2, PGF2 alpha, PGI2 (prostacyclin) and TXA2 (thromboxane A2) in response to fetal bovine serum or ascorbic acid. Changes in prostaglandin synthesis by these cells d...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(80)90063-9
更新日期：1980-04-01 00:00:00
abstract：:Developments in medicine have led to a significant increase in the average human lifespan. This increase in aging is most readily apparent in the case of HIV where antiretroviral therapy has shifted infection from a terminal to a chronic but manageable disease. Despite this advance, patients suffer from co-morbidities...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/j.mad.2018.07.008
更新日期：2018-10-01 00:00:00
abstract：:The role of glucocorticosteroid and thyroid hormone and of glucagon and insulin in the pre- and postnatal developmental formation of carbamoyl-phosphate synthase, ornithine transcarbamoylase, arginase, glutamate dehydrogenase, tyrosine aminotransferase, glucose-6-phosphatase, hexokinase and glucokinase activities in r...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(81)90010-5
更新日期：1981-01-01 00:00:00
abstract：:We tested the hypothesis that Ca(2+)-activated myosin ATPase activity is lower in muscles of aged rats relative to muscles of young rats, independent of changes in myosin isoform expression. Myofibrils were prepared from permeabilized fibers of soleus, plantaris, and semimembranosus muscles of young (8-12 months) and ...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/j.mad.2004.07.002
更新日期：2004-09-01 00:00:00
abstract：:The objective of the this study was to determine the cytokine profile of aging mice and to establish whether changes in cytokine production account for the fact that aging mice develop a milder disease than the young in response to induced experimental systemic lupus erythematosus (SLE). Cytokine secretion was evaluat...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/s0047-6374(97)01891-5
更新日期：1997-06-01 00:00:00
abstract：:Periodontal diseases are partly attributable to periodontopathic bacteria found in the host, whereas, butyric acid (BA) is a common secondary metabolite produced by periodontopathic bacterial pathogens. BA has been linked to oxidative stress induction while oxidative stress has long been associated with the ageing pro...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/j.mad.2017.01.005
更新日期：2017-03-01 00:00:00
