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Sex-related differences in behavioural markers in adult mice for the prediction of lifespan. Biogerontology 2020; 22:49-62. [PMID: 33064225 DOI: 10.1007/s10522-020-09902-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 10/09/2020] [Indexed: 10/23/2022]
Abstract
Finding biomarkers to assess the rate of ageing and consequently, to forecast individual lifespan is a challenge in ageing research. We recently published a mathematical model for lifespan prediction in adult female mice using behavioural parameters such as internal locomotion and time spent in open arms in the hole board (HB) and elevated plus maze (EPM) tests, respectively. Nevertheless, it is still not known if these behavioural variables could be useful in forecasting lifespan in male mice. Therefore, two groups of ICR-CD1 mice, male and female were subjected to the EPM, HB and T-maze tests at the adult age. Mice were monitored until they died and individual lifespans were registered. In general, adult male mice showed more anxiety-like behaviours than females. The mathematical model previously developed in females was validated with the female cohort, but found to be suboptimal for lifespan prediction in males. Thus, a new model for male lifespan prediction was constructed including the behavioural variables that were predictive of lifespan in males: time in the central platform of the EPM, inner locomotion, number of groomings and number and duration of head-dippings in the HB. These results confirm that the higher the anxiety-like behaviour at the adult age, the shorter the lifespan.
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Hwang DB, Won DH, Shin YS, Kim SY, Kang BC, Lim KM, Che JH, Nam KT, Yun JW. Ccrn4l as a pre-dose marker for prediction of cisplatin-induced hepatotoxicity susceptibility. Free Radic Biol Med 2020; 148:128-139. [PMID: 31911150 DOI: 10.1016/j.freeradbiomed.2020.01.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 12/21/2019] [Accepted: 01/03/2020] [Indexed: 12/28/2022]
Abstract
Clinical cisplatin use is often limited by its drug-induced liver injury (DILI). Particularly, individual differences in susceptibility to DILI can cause life-threatening medical conditions. This study aimed to uncover the inherent genetic factors determining individual variations in hepatotoxicity susceptibility. Rats were subjected to liver biopsy and a 3-week postoperative recovery period before cisplatin administration. At 2 days post-treatment with cisplatin, the rats exhibited histopathological and serum biochemical alterations in the liver, and changes in hydrogen peroxide and cytochrome P450-2E1 levels. Based on these results of liver-related biochemical markers, 32 rats were grouped into the susceptible (top five) and resistant (bottom five) groups. Using RNA-sequencing, we compared gene expressions in the liver pre-biopsied from these two groups before cisplatin treatment and found 161 differently expressed genes between the Susceptible and Resistant groups. Among them, the clock-controlled Ccrn4l responsible for 'rhythmic process' was identified as a common gene downregulated inherently prior to drug exposure in both cisplatin- and acetaminophen-sensitive animals. Additionally, low Ccrn4l levels before cisplatin treatment in the Susceptible group were maintained even after treatment, with decreased antioxidants, increased nitration, and apoptosis. The relationship of Ccrn4l with catalase and mitochondrial RNAs in the liver was confirmed by correlation of their hepatic levels among individuals and similar patterns of circadian variation in their mRNA expression. Remarkably, Ccrn4l knockdown promoted cisplatin-induced mitochondrial dysfunction in WB-F344 cells with antioxidant catalase and apoptosis-related Bax changes. Inherent individual hepatic Ccrn4l level might be a novel factor affecting cisplatin-induced hepatotoxicity susceptibility, possibly through regulation of mitochondrial and antioxidant functions.
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Affiliation(s)
- Da-Bin Hwang
- Department of Biotechnology, The Catholic University of Korea, Bucheon, 14662, South Korea
| | - Dong-Hoon Won
- Department of Biotechnology, The Catholic University of Korea, Bucheon, 14662, South Korea
| | - Yoo-Sub Shin
- Department of Biotechnology, The Catholic University of Korea, Bucheon, 14662, South Korea
| | - Shin-Young Kim
- Department of Biotechnology, The Catholic University of Korea, Bucheon, 14662, South Korea
| | - Byeong-Cheol Kang
- Graduate School of Translational Medicine, Seoul National University College of Medicine, Seoul, 03080, South Korea
| | - Kyung-Min Lim
- College of Pharmacy, Ewha Womans University, Seoul, 03760, South Korea
| | - Jeong-Hwan Che
- Biomedical Center for Animal Resource and Development, Seoul National University College of Medicine, Seoul, 03080, South Korea
| | - Ki Taek Nam
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, 03722, South Korea
| | - Jun-Won Yun
- Department of Biotechnology, The Catholic University of Korea, Bucheon, 14662, South Korea.
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Trzewikoswki de Lima G, De Gaspari E. Individual variability in humoral response of immunized outbred mice and cross-reactivity with prevalent Brazilian Neisseria meningitidis strains. Biologicals 2018; 55:19-26. [PMID: 30100326 DOI: 10.1016/j.biologicals.2018.08.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 07/11/2018] [Accepted: 08/02/2018] [Indexed: 12/19/2022] Open
Affiliation(s)
- Gabriela Trzewikoswki de Lima
- Departamento de Imunologia do Instituto Adolfo Lutz, Av. Dr. Arnaldo 355, 11 Andar, 01246902, São Paulo, SP, Brazil; Programa de Pós-Graduação Interunidades em Biotecnologia, Instituto de Ciências Biomédicas, USP, São Paulo, SP, Brazil
| | - Elizabeth De Gaspari
- Departamento de Imunologia do Instituto Adolfo Lutz, Av. Dr. Arnaldo 355, 11 Andar, 01246902, São Paulo, SP, Brazil; Programa de Pós-Graduação Interunidades em Biotecnologia, Instituto de Ciências Biomédicas, USP, São Paulo, SP, Brazil.
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Comparison of commonly used ICR stocks and the characterization of Korl:ICR. Lab Anim Res 2017; 33:8-14. [PMID: 28400834 PMCID: PMC5385282 DOI: 10.5625/lar.2017.33.1.8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 02/07/2017] [Accepted: 03/16/2017] [Indexed: 11/21/2022] Open
Abstract
Mouse is a commonly used animal in life science studies and is classified as outbred if genetically diverse and inbred if genetically homogeneous. Outbred mouse stocks, are used in toxicology, oncology, infection and pharmacology research. The National Institute of Food and Drug Safety Evaluation (NIFDS; former the Korea National Institute of Health) have bred ICR mice for more than 50 years. We investigated to provide users with information and promote accountability to the Korl:ICR. To secure the indigenous data, biological characteristics of Korl:ICR were identified by comparing with other ICR stocks. This domestic ICR stock was denominated as ‘Korl:ICR’. Phylogenetic analysis using SNPs indicated that the population stratification of the Korl:ICR was allocated different area with other ICR. In addition, we measured litter size, body weight, body length, various organ weight, hematology and clinical blood chemistry of the Korl:ICR compared to other ICR. Otherwise, there are no significant differences among the biological phenotypes of Korl:ICR and other ICR. These results suggest that as a genetically indigenous source colony, the Korl:ICR is seperated (or independent) stock with other ICR. Also, we confirmed that there is no difference among the Korl:ICR and other ICR on biological phenotypes. Therefore, the Korl:ICR source colony might be a new stock in distinction from other ICR, it is a good milestone in securing ownership of the national laboratory animal resource. The NIFDS expects that the Korl:ICR mice will be useful animal resource for our domestic researchers.
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Yun JW, Kim M, Cho SD, Lee JY, Bae ON, Lim KM. Highly expressed protein kinase A inhibitor α and suppression of protein kinase A may potentiate acetaminophen-induced hepatotoxicity. Toxicol Lett 2014; 229:59-65. [DOI: 10.1016/j.toxlet.2014.06.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Revised: 06/04/2014] [Accepted: 06/05/2014] [Indexed: 02/07/2023]
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Kumar M, Kumar S. Genetic structure and inter-generic relationship of closed colony of laboratory rodents based on RAPD markers. Mol Biol Rep 2014; 41:7273-80. [PMID: 25074272 DOI: 10.1007/s11033-014-3612-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Accepted: 07/15/2014] [Indexed: 10/25/2022]
Abstract
Molecular genetic analysis was performed using random amplified polymorphic DNA (RAPD) on three commonly used laboratory bred rodent genera viz. mouse (Mus musculus), rat (Rattus norvegicus) and guinea pig (Cavia porcellus) as sampled from the breeding colony maintained at the Animal Facility, CSIR-Indian Institute of Toxicology Research, Lucknow. In this study, 60 samples, 20 from each genus, were analyzed for evaluation of genetic structure of rodent stocks based on polymorphic bands using RAPD markers. Thirty five random primers were assessed for RAPD analysis. Out of 35, only 20 primers generated a total of 56.88% polymorphic bands among mice, rats and guinea pigs. The results revealed significantly variant and distinct fingerprint patterns specific to each of the genus. Within-genera analysis, the highest (89.0%) amount of genetic homogeneity was observed in mice samples and the least (79.3%) were observed in guinea pig samples. The amount of genetic homogeneity was observed very high within all genera. The average genetic diversity index observed was low (0.045) for mice and high (0.094) for guinea pigs. The inter-generic distances were maximum (0.8775) between mice and guinea pigs; and the minimum (0.5143) between rats and mice. The study proved that the RAPD markers are useful as genetic markers for assessment of genetic structure as well as inter-generic variability assessments.
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Affiliation(s)
- Mahadeo Kumar
- Animal Facility, CSIR-Indian Institute of Toxicology Research, M.G. Marg, Post Box No. 80, Lucknow, Uttar Pradesh, 226 001, India,
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Determination of the key innate genes related to individual variation in carbon tetrachloride-induced hepatotoxicity using a pre-biopsy procedure. Toxicol Appl Pharmacol 2009; 239:55-63. [DOI: 10.1016/j.taap.2009.05.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2009] [Revised: 04/21/2009] [Accepted: 05/15/2009] [Indexed: 01/17/2023]
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Shang H, Wei H, Yue B, Xu P, Huang H. Microsatellite analysis in two populations of Kunming mice. Lab Anim 2009; 43:34-40. [PMID: 19141464 DOI: 10.1258/la.2008.008098] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Kunming mice are the most widely used outbred colony in China. Differences in biological characters and drug reactions among different populations have been observed when using Kunming mice. But the molecular genetic profiles of Kunming mice and the extent of genetic differentiation among populations are unclear. Fifteen microsatellite markers were screened by a fluorescence-based semi-automated genotyping method for the two main populations of Kunming mice from Beijing (BJ) and Shanghai (SH) in China. The observed number of alleles, effective number of alleles, observed heterozygosity, unbiased expected heterozygosity and Shannon information index were used to estimate the genetic variation within the populations. A total of 89 alleles were detected in the two populations, with two to 12 at each locus, and the mean unbiased expected heterozygosity was 0.5724, which implies that there is abundant genetic variation in the populations of Kunming mice. Population differentiation was shown by shared alleles, F-statistics, Nei genetic distance and Nei genetic identity. In population BJ and population SH, respectively, only 35 of 61 and 35 of 63 alleles were shared by both. The Fst per locus varied from 0.0131 (D2Mit30) to 0.5697 (D7Mit281) and the average Fst of all loci was 0.1433, which indicates moderate genetic differentiation between the two Kunming mouse populations. The differences were also observed by Nei's [Genetic distance between populations. Am Nat 1972;106:283-92](1) genetic distance (0.3987) and Nei's [Estimation of average heterozygosity and genetic distance from a small number of individuals. Genetics 1978;89:583-90](2) unbiased measures of genetic distance (0.3881) estimates of subdivision. This research on Kunming mouse genetic diversity will assist in developing a national plan for the unification and standardization of the populations of Kunming mice in China.
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Affiliation(s)
- Haitao Shang
- Department of Laboratory Animal Science, Third Military Medical University, Chongqing 400038, China
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Klöting I, Nitschke C, van den Brandt J. Impact of genetic profiles on experimental studies: outbred versus wild rats. Toxicol Appl Pharmacol 2003; 189:68-71. [PMID: 12758061 DOI: 10.1016/s0041-008x(03)00099-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Most rats used in toxicological or pharmacological research are obtained from outbred stocks. It is assumed that they are characterized by a high degree of genetic heterogeneity, reflecting that of the human population. However, most outbred stocks available have been kept as restricted colonies over a long period of time, decreasing their genetic variability. Since it is unclear to what extent genetic variability can be expected from an outbred stock, we analyzed 20 rats from each of two outbred stocks, Crl:WIST and Rj:SD, and compared them with 17 unrelated wild rats, using 90 randomly selected microsatellite markers, located on 20 autosomes and chromosome X. Up to 8 alleles per locus were found in wild rats compared with the maximum of 4 alleles in Crl:WIST and 3 alleles in Rj:SD rats. Therefore, significant differences were observed in the mean of number of alleles between Crl:WIST (2.3 +/- 0.6) and Rj:SD (1.7 +/- 0.6), as well as between both outbred stocks and wild rats (4.6 +/- 1.5). The lowest heterozygosity was in Rj:SD (0.27 +/- 0.19), which was significantly different from Crl: WIST (0.41 +/- 0.19) and wild rats (0.35 +/- 0.21). Our findings clearly show loss of alleles in both outbred stocks compared with wild rats and demonstrate that the designation "outbred stock" is no guarantee for genetic and phenotypic variability. This fact will have a significant impact on generation of new outbred stocks as well as performing multistrain experiments and thereby it may reduce false-positive and false-negative results in toxicological and pharmacological research in the future.
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Affiliation(s)
- Ingrid Klöting
- Department of Laboratory Animal Science, Medical Faculty, University of Greifswald, Karlsburg, Germany
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Miller RA, Galecki A, Shmookler-Reis RJ. Interpretation, design, and analysis of gene array expression experiments. J Gerontol A Biol Sci Med Sci 2001; 56:B52-7. [PMID: 11213267 DOI: 10.1093/gerona/56.2.b52] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Experiments using arrays of cDNA targets to compare patterns of gene expression are beginning to play a prominent role in biogerontology, but drawing reliable conclusions from the resulting data sets requires careful application of statistical methods that discriminate chance events from those likely to reflect real differences among the samples under study. This essay discusses flaws in the logic of studies that base their conclusions on ratio calculations alone, reviews the multiple comparison traps inherent in high throughput systems that test a very large number of mRNAs simultaneously, and advocates a two-stage design in which significance testing applied to exploratory data is used to guide a second round of hypothesis-testing experiments conducted in a separate set of experimental samples.
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Affiliation(s)
- R A Miller
- Department of Pathology and Geriatrics Center, University of Michigan, Ann Arbor 48109-0940, USA.
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McClearn GE, Hofer SM. Genes as gerontological variables: genetically heterogeneous stocks and complex systems. Neurobiol Aging 1999; 20:147-56. [PMID: 10537024 DOI: 10.1016/s0197-4580(99)00046-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
In gerontological research utilizing animal models, a major general strategy has been the use of uniform genotypes of inbred strains or their F1 hybrids. These animal models provide standard reference groups that are of major importance in establishing a reliable data base on aging phenomena. There are limitations to their usage, however, particularly in respect to descriptions or evaluations of variances or of covariance relationships. For these purposes, genetically heterogeneous stocks have the advantage that phenotypic variance (and covariance) has a genetic as well as an environmental component. The advantages of genetic heterogeneity are best realized when the stock has been systematically derived (usually by intercrossing of inbred strains) and maintained by a mating scheme of sufficient size to minimize inbreeding. Genetically heterogeneous stocks are of particularly high potential value in the study of complex systems. Some examples of their use in a gerontological context are provided.
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Affiliation(s)
- G E McClearn
- Center for Developmental and Health Genetics, The Pennsylvania State University, University Park 16802, USA.
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Blanco B, Ferrández MD, Correa R, Del Rio M, Guaza C, Hernanz A, De la Fuente M. Changes in several functions of murine peritoneal macrophages by N-acetylcysteine and thioproline ingestion. Comparative effect between two strains of mice. Biofactors 1999; 10:179-85. [PMID: 10609880 DOI: 10.1002/biof.5520100214] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The administration of the thiol compounds, N-acetylcysteine (NAC) and in particular thioproline (thiazolidine-4-carboxylic acid) at 0.1% w/w concentration in the diet, improves lymphocyte functions in old female Swiss mice, as has been shown in our previous studies. In the present work, adult mice from two different strains, namely BALB/c (an inbred strain) and OF1-Swiss (noninbred strain), were fed a diet supplemented with the above dose of each thiol compound jointly for five weeks. At 28 weeks of age, peritoneal cell suspensions were obtained and different steps of the phagocytic process, the most representative activity of macrophages, as well as interleukin-1beta (IL-1beta) production, were studied. Thus, adherence to substrate, mobility directed to a chemoattractant gradient (chemotaxis), ingestion of inert particles and superoxide anion production were analysed. The results show that diet supplementation with NAC plus thioproline increased all macrophage functions studied with the exception of superoxide anion production, which was decreased. These effects were more evident in macrophages from Swiss mice, whereas in BALB/c mice the stimulation of phagocytosis and IL-1beta production was lower and no differences were seen after treatment in adherence and superoxide anion production. These data suggest that immune function can be improved in adult mice by administration of the above thiol compounds, especially in the noninbred strain of OF1-Swiss mice.
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Affiliation(s)
- B Blanco
- Department of Animal Physiology, Faculty of Biology, Complutense University, Madrid, Spain
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Abstract
Whether people become ill after encountering environmental pollutants depends on the magnitude of their exposure and their capacity to respond. Exposure and intrinsic response capabilities vary within the population. Those that become ill when the general population remains largely unaffected are considered to be highly susceptible. The U.S. Environmental Protection Agency (USEPA), responsible for protecting the public from environmental pollutants, has developed risk assessment procedures to assist in evaluating the likelihood of health effects. However, the Agency's ability to evaluate the risk faced by highly susceptible populations is often hindered by the paucity of adequate health effects data. Response variability can be assessed with animal models and human epidemiological studies. Although animal models are useful when evaluating the effect of gender and developmental stage on susceptibility, inbred rodent strains underestimate the genetic and lifestyle-induced variability in susceptibility found in human populations. Epidemiological approaches are the preferred source of information on variability. This paper reviews the epidemiological literature from the perspective of a risk assessor seeking data suitable for estimating the risk to highly susceptible populations. Epidemiological approaches do not measure the full range of population response variability. Rather, "susceptibility factors" are evaluated either as risk factors or by focusing on the susceptible population, e.g. children. Susceptibility factors due to genetics, developmental stage, gender, ethnicity, disease state and lifestyle are most frequently encountered. Often, the information describing the health impact of the susceptibility factor is incomplete due to, (1) a failure to consider factors modifying susceptibility; (2) inadequate exposure data; (3) a failure to evaluate the health impact of the susceptibility factor. In addition, for a given exposure agent, several susceptibility factors may be relevant. While incomplete data describing susceptibility factors limits the opportunity for quantitative estimations of risk, available information can supplement qualitative evaluations and risk management.
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Affiliation(s)
- J A Grassman
- School of Public Health, Columbia University, New York USA.
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Abstract
A wide range of genetic models with postponed aging are now available, from selected mice and Drosophilia to mutant Caenorhabditis elegans and Saccharomyces cerevisiae. These systems allow efficient testing of alternative mechanistic hypotheses for aging. Genetic analysis is forging stronger connections between particular alleles and susceptibility to particular 'diseases of aging'; for example, two different genes for Alzheimer disease have been identified.
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Affiliation(s)
- M R Rose
- Department of Ecology and Evolutionary Biology, University of California, Irvine 92717, USA.
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Abstract
Laboratory studies indicate that the life-span of inbred rodent strains is inversely related to the intensity of their behavioral and neuroendocrine responses to stressful stimuli. In the brain, a shorter life-span is associated with accelerated age-dependent degenerative changes in specific stress-responsive neuronal systems. The evidence suggests a possible genetic linkage between the intensity of the stress response, the rate of age-dependent neurodegeneration and the individual's life expectancy. It is proposed that inherent hyper-reactivity to stressors is genetically linked to a shorter life-span and to accelerated age-dependent neurodegeneration. Several experimental approaches to test 'this stress-longevity-neurodegeneration linkage hypothesis' are outlined.
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Affiliation(s)
- G M Gilad
- Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Halifa, Israel
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