Abstract：
:Cell proliferation, cell injury and aging are connected with changes in the cell membrane structure. Apparently these changes activate, in mammalian as well as in plant cells, lipases which liberate polyunsaturated fatty acids (PUFAs). PUFAs are the substrates for lipoxygenases which convert them to corresponding hydroperoxides (LOOHs). Lipoxygenases commit suicide by releasing iron ions. LOOHs react with iron ions to generate radicals. Thus, a nonenzymic lipid peroxidation process (LPO) is induced. It is speculated that the change from enzymic to nonenzymic LPO is connected with the switch from apoptosis to necrosis and that LOOHs produced in enzymic reactions are degraded specifically to signal compounds which induce physiological responses, while nonenzymic reactions seem to induce generation of reactive oxygen species, cell death and age related diseases. Enzymic and nonenzymic LPO processes concern all PUFAs not only arachidonic acid. The main PUFA in mammals is linoleic acid. Since these products serve signalling functions, different degradation paths of linoleic-hydroperoxides are described in detail and the physiological properties of LPO products are discussed in relation to aging and age related diseases.
journal_name
Mech Ageing Devjournal_title
Mechanisms of ageing and developmentauthors
Spiteller Gdoi
10.1016/s0047-6374(01)00220-2subject
Has Abstractpub_date
2001-05-31 00:00:00pages
617-57issue
7eissn
0047-6374issn
1872-6216pii
S0047-6374(01)00220-2journal_volume
122pub_type
杂志文章,评审abstract：:The dynamics of in vitro uptake of [14C]-ascorbic acid into intact lenses of young (50 days old) and old (730 days old) guinea pigs was evaluated in this study. Two-dimensional protein gel analysis of [35S]-methionine labeled proteins provided evidence that the isolated lenses were viable throughout the culture period...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(90)90025-b
更新日期：1990-08-01 00:00:00
abstract：:To test the hypothesis that the aging mammalian heart and brain might have increased vulnerability to acute stress, DNA fragmentation was studied after hypoxia-reoygenation in young adult (6 months) and old (22-24 months) F344 rats. Heart and brain tissue were examined at the following time points: 30, 60, or 90 min o...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/s0047-6374(99)00048-2
更新日期：1999-12-07 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：: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：:Elevated reactive oxygen species (ROS) levels have been observed in mammals during aging, implying an important role of ROS in the aging process. Most bird species are known to live longer and to contain lower ROS levels than mammals of the same body weight. The influence of ROS on the aging process of birds has been ...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/j.mad.2009.11.005
更新日期：2010-01-01 00:00:00
abstract：:Cell-free protein synthesis by mouse liver ribosomes was examined as a function of the age of individual ribosome donors. In two strains of mouse, one long-lived and one short-lived, both the fraction of polyribosomes and the rate of in vitro ribosomal protein synthesis remained essentially constant throughout the lif...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(81)90049-x
更新日期：1981-12-01 00:00:00
abstract：:In a cell culture model of aging we have previously shown that there is an age-related decrease in the lipid dynamics of the proerythropoetic K562 cell membranes, as determined by the generalized polarization (GP) of the phase-sensitive lipid probe 2-dimethylamino-6-lauroylnaphthalene (Laurdan) (T. Parasassi, M. Di St...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/s0047-6374(97)00047-x
更新日期：1997-08-01 00:00:00
abstract：:Scavenger receptor B1 (SR-B1) is a trans-membrane protein, involved in tissue reverse cholesterol transport. Several studies have demonstrated that SR-B1 is also implicated in other physiological processes, such as bacteria and apoptotic cells recognition and regulation of intracellular tocopherol and carotenoids leve...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/j.mad.2017.11.006
更新日期：2018-06-01 00:00:00
abstract：:Hypertension is a main risk factor for cerebrovascular disease, including vascular dementia. The present study was designed to evaluate if hypertension-dependent changes of the hippocampus of spontaneously hypertensive rats (SHR) of different ages were related with those occurring in vascular dementia. The hippocampus...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/s0047-6374(01)00362-1
更新日期：2002-03-15 00:00:00
abstract：:Accumulation of oxidative DNA damage in the human brain has been implicated in etiologies of post-traumatic and age-associated declines in neuronal function. In neurons, because of high metabolic rates and prolonged life span, exposure to free radicals is intense and risk for accumulation of damaged DNA is amplified. ...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章,评审
doi：10.1016/j.mad.2008.02.001
更新日期：2008-07-01 00:00:00
abstract：:While deviations from the optimal phenotype are deleterious, increased variation can prevent population extinction under severe stresses. Cell division asymmetry is an important source of microbial phenotypic heterogeneity. A consecutive set of asymmetric divisions can cause the gradual accumulation of deleterious fac...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章,评审
doi：10.1016/j.mad.2018.09.001
更新日期：2018-12-01 00:00:00
abstract：:In an interspecies comparison of seven primate species, the expression of the erbB proto oncogene was found to be higher in fibroblasts derived from three relatively long-lived species, the human, gorilla, and chimpanzee than in cells from the orangutan, pygmy chimpanzee, squirrel monkey, or red-bellied tamarin. No si...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(87)90007-8
更新日期：1987-07-01 00:00:00
abstract：:Cellular senescence is a fundamental trait of many eukaryotic organisms. Senescent cells participate both in the developmental program and in normal ageing and age-related diseases. Senescence of proliferation-prone cells is a state of permanent cell cycle arrest accompanied by metabolic activity manifested by high se...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章,评审
doi：10.1016/j.mad.2017.08.004
更新日期：2018-03-01 00:00:00
abstract：:There is currently of a great interest investigating the role of nutrition in the prevention of age-associated disorders. The present study aimed to evaluate, on a particular strain of mice, the efficacy of alternate-day fasting on the mitochondrial production of free radical species and on the incidence of a specific...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/j.mad.2005.06.007
更新日期：2005-11-01 00:00:00
abstract：:The increased lifespan caused by food limitation has been observed in a wide range of animals including the nematode Caenorhabditis elegans. We show here that the lifespans of eat-2 and eat-5 feeding-defective mutants and a mutant of dbl-1 encoding a TGFβ ligand significantly change between the cultures fed on Escheri...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/j.mad.2011.02.005
更新日期：2011-04-01 00:00:00
abstract：:We have developed a novel method to examine the translational fidelity of mammalian ribosomes in vitro, where protamine mRNA was used as a template. This method enabled us to determine frequency of misrecognition of purine bases at the second position of arginine codons (AGR/AAR) in the mRNA. Using this method the fid...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(83)90002-7
更新日期：1983-05-01 00:00:00
abstract：:Long-Evans female rats three weeks, three months and 13-14 months of age were placed on tryptophan-deficient diets for periods ranging from a few months to nearly two years. Growth was interupted during the period of tryptophan-deficiency, but when the animals were returned to a complete diet, they gained weight and g...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(76)90012-9
更新日期：1976-03-01 00:00:00
abstract：:The tumor suppressors p16(INK4a) and p53 have been implicated as contributors to age-associated stem cell decline. Key functions of p53 are the induction of cell cycle arrest, senescence, or apoptosis in response to DNA damage. Here, we examine senescence, apoptosis, and DNA damage responses in a mouse accelerated agi...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/j.mad.2009.01.001
更新日期：2009-04-01 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：: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：: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：:Age related changes in some aspects of glutamate metabolism were followed in the brain of a short lived species of tropical murrel, Channa punctatus. Both ammonia and glutamine contents of brain increased with advancing age of the murrel. The glutamate dehydrogenase activity of brain increased during maturation phase ...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(93)90139-i
更新日期：1993-05-01 00:00:00
abstract：:The data concerning the effects of age on the brainstem are scarce and few works are devoted to the human vestibular nuclear complex. The study of the effects of aging in the vestibular nuclei could have clinical interest due to the high prevalence of balance control and gait problems in the elderly. We have used in t...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/s0047-6374(00)00098-1
更新日期：2000-04-14 00:00:00
abstract：:In an attempt to understand the molecular mechanisms of age-dependent degenerative alteration in human periodontal tissues, we examined mRNA level and DNA methylation of collagen alpha1(I) gene. Using healthy periodontal ligament tissues from humans aged 9-76 years, we found that the collagen alpha1(I) mRNA level decr...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/s0047-6374(99)00041-x
更新日期：1999-10-01 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：:Human diploid cells, TIG-7, were serially cultivated under 1%, 5% or 21% (air) oxygen. The limit of their cumulative population doublings was extended by 16% or 10% under 1% or 5% oxygen, respectively, as compared with that under 21% oxygen. When TIG-7 cells were serially cultivated in the presence of 10 mM or 20 mM 3...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/0047-6374(95)01584-m
更新日期：1995-07-14 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：:Overproduction of oxidants and free radicals in ageing tissues induces nitro-oxidative stress, which has recently been implicated in the pathogenesis of cardiovascular dysfunction associated with ageing. Peroxynitrite, a strong cytotoxic oxidant damages proteins and DNA and activates several pathways causing tissue in...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/j.mad.2006.09.005
更新日期：2007-02-01 00:00:00
abstract：:The polyphenol quercetin has recently been found to extend lifespan and increase stress resistance in the nematode Caenorhabditis elegans. The forkhead transcription factor DAF-16 has previously been linked to these effects. However, by using a daf-16(mgDf50) mutant strain, we show that quercetin exposure leads to inc...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/j.mad.2008.07.001
更新日期：2008-10-01 00:00:00
abstract：:The present study examined the effect of a 40% reduction in caloric intake (CR) versus ad libitum (AL) feeding on retinal aging. CR- and AL-fed Brown Norway (BN) rats were obtained at 12, 24 and 30 months of age from the National Center for Toxicological Research (NCTR). Age-dependent declines in outer nuclear layer (...
journal_title：Mechanisms of ageing and development
pub_type： 杂志文章
doi：10.1016/s0047-6374(00)00096-8
更新日期：2000-03-13 00:00:00
