Abstract：
:Aging is associated with an increased incidence of heart failure, but the existence of an age-related cardiomyopathy remains controversial. Differences in strain, age and technique of measuring cardiac function differ between experiments, confounding the interpretation of these studies. Additionally, the structural and genetic profile at the onset of heart failure has not been extensively studied. We therefore performed serial echocardiography, which allows repeated assessment of left ventricular (LV) function, on a cohort of the same mice every 3 months as they aged and demonstrated that LV systolic dysfunction becomes apparent at 18 months of age. These aging animals had left ventricular hypertrophy and fibrosis, but did not have inducible ventricular tachyarrhythmias. Gene expression profiling of left ventricular tissue demonstrated 40 differentially expressed probesets and 36 differentially expressed gene ontology terms, largely related to inflammation and immunity. At this early stage of cardiac dysfunction, we observed increased cardiomyocyte expression of the pro-apoptotic activated caspase-3, but no actual increase in apoptosis. The aging hearts also have higher levels of anti-apoptotic and autophagic factors, which may have rendered protection from apoptosis. In conclusion, we describe the functional, structural and genetic changes in murine hearts as they first develop cardiomyopathy of aging.
journal_name
Exp Gerontoljournal_title
Experimental gerontologyauthors
Boyle AJ,Shih H,Hwang J,Ye J,Lee B,Zhang Y,Kwon D,Jun K,Zheng D,Sievers R,Angeli F,Yeghiazarians Y,Lee Rdoi
10.1016/j.exger.2011.02.010subject
Has Abstractpub_date
2011-07-01 00:00:00pages
549-59issue
7eissn
0531-5565issn
1873-6815pii
S0531-5565(11)00060-Xjournal_volume
46pub_type
杂志文章abstract：:Aging is associated with changes in several metabolic pathways affecting liver function including the adaptive unfolded protein response (UPR). On the other hand, exercise training has been shown to exert beneficial effects on metabolism in the liver and exercise training has been reported to affect hepatic UPR. PGC-1...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2017.08.006
更新日期：2017-11-01 00:00:00
abstract：:Natural killer (NK) cells play an important role in controlling several viral diseases. Our previous studies demonstrated an age-dependent susceptibility to mousepox due to defective NK cell responses and trafficking. However, the mechanisms that underlie the age-related impairment in NK cell migration have yet to be ...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2017.06.021
更新日期：2017-10-01 00:00:00
abstract：:Mitochondria isolated from the livers of old rats (26-30 months) were found to incorporate 41% less leucine into mitochondrial proteins as compared to those from young rats (2-3 months). The initial rates of incorporation of label were 145 cpm/mg/min for the "old" animals, and 320 cpm/mg/min for the young animal. No d...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/s0531-5565(82)80004-1
更新日期：1982-01-01 00:00:00
abstract：:Increasing evidence suggests an important role of mitochondrial dysfunction in the pathogenesis of many common age-related neurodegenerative diseases, including Alzheimer's disease (AD). AD is the most common neurodegenerative disorder characterized by dementia, memory loss, neuronal apoptosis and eventually death of ...
journal_title：Experimental gerontology
pub_type： 杂志文章,评审
doi：10.1016/j.exger.2006.03.012
更新日期：2006-07-01 00:00:00
abstract：:Maintaining physical mobility is important for preventing age-related comorbidities in older adults. Endurance and resistance training prevent mobility loss in aging, but exercise alone does not always achieve the expected improvements in physical and cardiopulmonary function. Recent preclinical evidence suggests that...
journal_title：Experimental gerontology
pub_type： 杂志文章,评审
doi：10.1016/j.exger.2020.110972
更新日期：2020-08-01 00:00:00
abstract：OBJECTIVES:To date studies evaluating the relation between circulating aldosterone levels and mortality in elderly female individuals are lacking. We therefore aimed to assess the relationship between circulating aldosterone levels and mortality in a population-based cohort study of female nursing home residents. METH...
journal_title：Experimental gerontology
pub_type： 杂志文章,多中心研究
doi：10.1016/j.exger.2013.01.004
更新日期：2013-03-01 00:00:00
abstract：:Chronic low-grade elevations in circulating levels of interleukin (IL)-6 act as a marker of subclinical cardiovascular diseases (CVD) and provide an independent predictor of increased mortality in elderly populations. The purpose of the present study was to test the hypothesis that the IL-6 -174G>C promoter polymorphi...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2003.10.012
更新日期：2004-02-01 00:00:00
abstract：BACKGROUND:Hyaline articular cartilage, which protects the bones of diarthrodial joints from forces associated with load bearing, frictions, and impacts has very limited capacities for self-repair. Over the years, the trend of treatments has shifted to regenerations and researchers have been on the quest for a lasting ...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2018.01.020
更新日期：2018-04-01 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：:Reproductive senescence occurs in all female mammals with resultant changes in numerous body functional systems and several important features may be species-specific. Those features that appear to parallel human menopause and aging include general similarity of hormone profiles across the menopausal transition, progr...
journal_title：Experimental gerontology
pub_type： 杂志文章,评审
doi：10.1016/j.exger.2005.10.010
更新日期：2006-02-01 00:00:00
abstract：:Previous studies have indicated that genetic variations in the factors of insulin/insulin-like growth factor 1 (IGF-1) signaling pathway could influence human life-span by affecting IGF-1 levels. The promoter region of the IGF-1 gene is an obvious candidate and has not been studied clearly. To explore the potential ro...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2008.08.004
更新日期：2008-10-01 00:00:00
abstract：:The antioxidant 2-mercaptoethylamine (MEA) was added to the culture medium of WI-38 cells throughout their lifespan. MEA concentrations of 0.5 microM, 5 microM and 50 microM were used. The presence of 5 microM or 50 microM MEA decreased the fraction of rapidly dividing cells and slightly reduced cell density at conflu...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/0531-5565(84)90026-3
更新日期：1984-01-01 00:00:00
abstract：:Impaired tolerance to ischemia-reperfusion in older hearts may stem in part from alterations in purine catabolism, impacting on maintenance of energy state and protective signaling via extracellular adenosine. We characterized effects of aging on normoxic and post-ischemic purine metabolism in hearts from young (2-4 m...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2003.08.003
更新日期：2003-10-01 00:00:00
abstract：:Age-related changes of immune functions have been extensively investigated in both humans and animal models; nevertheless, the literature on potential alterations of dendritic cells, potent antigen presenting cells responsible for initiating immune responses, with aging is very scarce. We studied the immuno-phenotype ...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/s0531-5565(99)00089-3
更新日期：2000-03-01 00:00:00
abstract：:A longitudinal study was performed to confirm the inverse relationship between in vivo age and in vitro proliferative capacity previously observed in a cross-sectional study, and to investigate the relationship between the growth of dermal fibroblasts in vitro and a physiological function (i.e., wound repair) that is ...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/0531-5565(91)90058-t
更新日期：1991-01-01 00:00:00
abstract：:Mitochondrial superoxide production is an important source of reactive oxygen species in cells, and may cause or contribute to ageing and the diseases of ageing. Seven major sites of superoxide production in mammalian mitochondria are known and widely accepted. In descending order of maximum capacity they are the ubiq...
journal_title：Experimental gerontology
pub_type： 杂志文章,评审
doi：10.1016/j.exger.2010.01.003
更新日期：2010-08-01 00:00:00
abstract：:Muscle wasting diseases are gradually increasing with the increase in global life expectancy. This study was designed to evaluate the efficacy of HIM-CHX, a herbal combination of Boswellia serrata, Cissus quadrangularis, and Withania somnifera, on Sarcopenia. The effects of HIM-CHX on parameters such as muscle mass, g...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2019.110663
更新日期：2019-10-01 00:00:00
abstract：BACKGROUND:Awareness of physical ability may impact fall risk during everyday tasks. Therefore, we investigated perceived reach (PR; estimation of furthest reach distance), maximal reach (MR) and reach judgement error (RJE), and their relationships with neuropsychological and physical performance, and falls in older pe...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2018.10.020
更新日期：2018-12-01 00:00:00
abstract：:Long-lived recombinant inbred lines, some of which have mean and maximum life spans up to 70% longer than wild type, were used in these analyses. Longer life results from a slower exponential rate of increase in mortality. General motor activity decreases with chronological age in all genotypes; this decay in general ...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/0531-5565(88)90031-9
更新日期：1988-01-01 00:00:00
abstract：BACKGROUND:Inflammation plays a pivotal role in amyloid plaque progression thereby contributing to Alzheimer's disease-related neurodegeneration. We hypothesized that patients with Alzheimer's disease have an innate pro-inflammatory phenotype, as compared to control subjects without dementia. METHODS:Patients with a d...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/s0531-5565(00)00176-5
更新日期：2001-01-01 00:00:00
abstract：:The alterations of the lipid composition and fluidity of liver plasma membranes as well as the activity of membrane-bound phospholipase A2 (EC 3.1.1.4) in male and female rats of different ages are investigated. An age-induced increase of the protein/phospholipid and cholesterol/phospholipid ratios is observed, as wel...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/0531-5565(86)90072-0
更新日期：1986-01-01 00:00:00
abstract：OBJECTIVE:Mitochondria produce cellular energy via oxidative phosphorylation (OXPHOS), mediated by respiratory chain complexes I to IV and ATP synthase (complex V). Mitochondrial respiratory complexes have been shown to decline with age in several tissues. As the intestinal epithelium is a tissue with a high energy dem...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2020.110924
更新日期：2020-07-01 00:00:00
abstract：:A non-enzymatic reaction between ketones or aldehydes and the amino groups of proteins, lipids and nucleic acids contributes to the aging of macromolecules and to the development and progression of various age-related disorders such as vascular complications of diabetes, Alzheimer's disease, cancer growth and metastas...
journal_title：Experimental gerontology
pub_type： 杂志文章,评审
doi：10.1016/j.exger.2010.11.007
更新日期：2011-04-01 00:00:00
abstract：:Rodent gerontology experiments should be carefully designed and correctly analyzed so as to provide the maximum amount of information for the minimum amount of work. There are five criteria for a "good" experimental design. These are applicable both to in vivo and in vitro experiments: (1) The experiment should be unb...
journal_title：Experimental gerontology
pub_type： 杂志文章,评审
doi：10.1016/s0531-5565(96)00032-0
更新日期：1997-01-01 00:00:00
abstract：OBJECTIVES:There is a scarcity of data on the association between mild cognitive impairment (MCI) and falls, especially from low- and middle-income countries (LMICs) where 70% of all older adults reside. Thus, we investigated the association between MCI and fall-related injury among older adults residing in six LMICs (...
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：BACKGROUND:Low muscle strength (dynapenia) is a primary characteristic of sarcopenia, the age-related loss of muscle mass and strength or low walking speed. New evidence suggests that muscle strength positively affects blood pressure (BP) responses to exercise. As older adults with lowest handgrip strength also have lo...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/j.exger.2020.110984
更新日期：2020-09-01 00:00:00
abstract：:The effect of 3-(4-pyridyl)-1,2,4-thiotriazolyl 5-mercaptoacetic acid kalium salt (Rumosol) and 3-(4-pyridyl)-1,2,4-thiotriazolyl 5-mercaptoacetic acid morpholinium salt (drug 2) on the concentration of Schiff base in myocardium of adult (10-12 months) and old (22-25 months) Wistar rats during immobilized stress were ...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/s0531-5565(01)00181-4
更新日期：2002-04-01 00:00:00
abstract：:Aging in Brown Norway rats is accompanied by the reduced production of testosterone by the Leydig cells, the testicular cells responsible for synthesizing and secreting this essential steroid. As yet, the mechanism by which Leydig cell steroidogenesis is reduced is unknown. Herein we assess the production of mitochond...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/s0531-5565(01)00118-8
更新日期：2001-08-01 00:00:00
abstract：:DNA binding of the ku protein was investigated in peripheral blood mononuclear cells (PBMC) from 24 subjects of different ages (20-89 years old) displaying age-related changes in DNA repair, mitotic responsiveness, and cytokine production. Ku is an heterodimeric protein composed of two subunits of 70 and 80 kDa, which...
journal_title：Experimental gerontology
pub_type： 杂志文章
doi：10.1016/s0531-5565(99)00026-1
更新日期：1999-08-01 00:00:00
abstract：:Senescent cells accumulate with age and contribute to pathologies associated to old age. The senescent program can be induced by pro-cancer stimuli or is developmentally controlled. In cells forced to senesce by expression of oncogenes or short telomeres, aberrant activation of the ERK/MAP kinase signaling pathway lea...
journal_title：Experimental gerontology
pub_type： 杂志文章,评审
doi：10.1016/j.exger.2017.06.016
更新日期：2018-07-01 00:00:00
