Induction of sister chromatid exchanges by mitomycin C in lymphocytes of young and old human donors.

abstract：:The effect of age on the compositional analysis of human Descemet's membrane was examined. Membranes were obtained from human corneas ranging from 0.5 to 95 years and purified by sodium dodecyl sulfate (SDS) extraction. Substantial age-related changes were obtained in the amino acid compositions of the SDS-insoluble b...

journal_title：Gerontology

authors： Freeman IL,Vergnes JP,Brown SI

更新日期：1980-01-01 00:00:00

abstract：:Aging is associated with far-reaching changes in physiological functions resulting in morbidity and ultimately death. Age-related frailty, insecurity and reduced physical activity contribute to a progressive loss of muscle mass and function, commonly referred to as sarcopenia. Due to the increase in life expectancy in...

journal_title：Gerontology

authors： Arnold AS,Egger A,Handschin C

更新日期：2011-01-01 00:00:00

abstract：:The subcellular distribution of estradiol following the in vivo administration of 3H-estradiol, cytosol and nuclear estrogen receptor after in vitro incubation with 3H-estradiol were studied in young adult female rats (3-6 months old) and old female rats (over 18 months old). After intravenous injection of 3H-estradio...

journal_title：Gerontology

authors： Jiang MJ,Peng MT

更新日期：1981-01-01 00:00:00

abstract：:The conditioned avoidance response and the cerebral levels of dopamine and noradrenaline have been studied in control rats and in rats submitted to a hypobaric hypoxia. A protection against the effects of hypoxia was induced by both dihydroergocornine (20 microgram/kg) and dihydroergocryptine (100 microgram/kg), and t...

journal_title：Gerontology

authors： Boismare F,Le Poncin M,Lefrançois J

更新日期：1978-01-01 00:00:00

abstract：:We have previously shown that lymphocytes from Alzheimer's disease (AD) patients are hypersensitive to ionising radiation, as revealed by their higher levels of dicentrics than those from age-matched, normal individuals. We have now examined the sensitivity of these cells to N-methyl-N-nitrosourea or methyl methanesul...

journal_title：Gerontology

authors： Tobi SE,Neary D,Itzhaki RF

更新日期：1993-01-01 00:00:00

abstract：BACKGROUND:Cognitively stimulating activities contribute to the accumulation of cognitive reserve that is proposed to be instrumental for maintaining cognitive functioning in aging. Adopting a novel, more general conceptual perspective including models of vulnerability, we argue that cognitive reserve may modify the lo...

journal_title：Gerontology

authors： Ihle A,Rimmele U,Oris M,Maurer J,Kliegel M

更新日期：2020-01-01 00:00:00

abstract：BACKGROUND:Hypoxia and aging determine on mammalian cells a stress response which implies modified production of oxidants, reactive oxygen species or reactive nitrogen species at the mitochondrial level, interfering with cell-signaling proteins and inducing mitochondrial damage, apoptosis occurrence and functional cons...

journal_title：Gerontology

authors： Zara S,Rapino M,Centurione L,di Giacomo V,Petruccelli G,Cataldi A

更新日期：2010-01-01 00:00:00

abstract：:Alloxan diabetes in Swiss mice of both sexes accelerated the ageing of collagen in newly formed cotton pellet granuloma concomitant with its similar effect on dorsal skin. The degree of response of collagen to alloxanization was dependent on the duration of the treatment and the sex of the animal. It is suggested that...

journal_title：Gerontology

authors： Behera HN,Patnaik BK

更新日期：1981-01-01 00:00:00

abstract：:Although common among the hospitalized frail elderly, malnutrition is often unrecognized by clinicians, and its identification is fought with difficulty due to inadequate nutritional assessment methods and standards. This study compared the use of percent ideal body weight (%IBW) and anthropometry in the assessment of...

journal_title：Gerontology

authors： Lansey S,Waslien C,Mulvihill M,Fillit H

更新日期：1993-01-01 00:00:00

abstract：:Adhesion molecules, such as leukocyte-function-associated antigen (LFA-1 or CD11a/CD18), intercellular adhesion molecule 1 (ICAM-1 or CD54) and Hermes antigen (HCAM or CD44), have important roles in many adhesive interactions involving cells of the immune system. Since it has been shown that many immunological alterat...

journal_title：Gerontology

authors： Chiricolo M,Morini MC,Mancini R,Beltrandi E,Belletti D,Conte R

更新日期：1995-01-01 00:00:00

abstract：OBJECTIVE AND BACKGROUND:The aim of the present article is to discuss the potential of gene therapy for thymic hormones as a novel therapeutic strategy to treat dyshomeostatic states associated with athymia, as Di George syndrome, or hypothymic conditions like those associated with AIDS, chronic stress or aging. First ...

journal_title：Gerontology

authors： Goya RG,Cónsole G,Hereñú C,Brown O,Rimoldi OJ

更新日期：2002-09-01 00:00:00

abstract：:Tuberculosis is still a major cause of morbidity and mortality worldwide. Recent studies have suggested that even in the developed world its incidence in the elderly is increasing. Symptoms of active tuberculosis are non-specific and less pronounced in the elderly. Radiological features are more likely to be 'atypical...

journal_title：Gerontology

authors： Packham S

更新日期：2001-07-01 00:00:00

abstract：:L-tryptophan (L-T) was added at a dose of 150-450 mg daily to eight Parkinsonian patients who developed visual hallucinations with paranoidal features under L-dopa (L-D) treatment (112.5-75 mg daily) in combination with alpha-methyldopa hydrazine (12.5-75 mg daily). In six patients L-T ameliorated the symptomatology b...

journal_title：Gerontology

authors： Rabey JM,Vardi J,Askenazi JJ,Streifler M

更新日期：1977-01-01 00:00:00

abstract：:The purpose of this study was to examine the effects of a multifactorial memory training program designed for normal older adults. The multifactorial program involved the training of three components that are critical to memory functioning: recoding operations, attentional functions and relaxation. Two controls groups...

journal_title：Gerontology

authors： Stigsdotter A,Bäckman L

更新日期：1989-01-01 00:00:00

abstract：BACKGROUND:Thyroid hormones have significant effects on the cardiovascular systems. In general, hyperthyroidism is associated with an increased risk of dysrhythmias, while hypothyroidism may cause atherosclerosis. Recent large studies have sought to identify aging-associated changes in thyroid function and their releva...

journal_title：Gerontology

authors： Barbesino G

更新日期：2019-01-01 00:00:00

abstract：:Demented elderly patients unable to eat independently and often refusing food are threatened by malnutrition. Therefore, we determined in 6 female patients aged 74-100 with senile dementia the average daily food consumption within a 3-week period by the exact weighing methods on six occasions. The average daily energy...

journal_title：Gerontology

authors： Stähelin HB,Hofer HO,Vogel M,Held C,Seiler WO

更新日期：1983-01-01 00:00:00

abstract：:The life span of Drosophila melanogaster was reduced when copper compounds were fed at concentrations of 1 X 10(-3) M or greater. Feeding lower concentrations of copper compounds failed to significantly change life span. A combination of copper gluconate and gluconic acid increased the adult life span by 21.6%. We con...

journal_title：Gerontology

authors： Massie HR,Williams TR,Aiello VR

更新日期：1984-01-01 00:00:00

abstract：:One of the problems associated with using random-source dogs to study in vivo vascular responses is their unknown background. Since aging is known to influence vascular responses, unknown variations in age could influence experimental results. The vast majority of aging studies examine arteries in vitro. This study wa...

journal_title：Gerontology

authors： Kaiser L,Ptu S

更新日期：1992-01-01 00:00:00

abstract：:Although the two-point discrimination test of the skin is a simple test of the sensory nerve function, there have been few studies on age-related changes in the ability to discriminate between two points in a large noninstitutionalized population. In this study we attempted (1) to determine normal values on the two-po...

journal_title：Gerontology

authors： Shimokata H,Kuzuya F

更新日期：1995-01-01 00:00:00

abstract：:Phagocytically stimulated canine leukocyte suspensions obtained from 12 young adult and 43 aged individuals were examined for several physiological manifestations of the phagocytically induced respiratory burst. There was considerable variation in levels of oxygen consumption, glucose oxidation via the hexose monophos...

journal_title：Gerontology

authors： Johnson DD,Renshaw HW,Warner DH,Browder EJ,Williams JD

更新日期：1984-01-01 00:00:00

abstract：BACKGROUND:A large proportion of falls in older people are caused by slipping. Previous occupational safety research suggests that inadequate footwear may contribute to slipping accidents; however, no studies have assessed the slip resistance of casual footwear. OBJECTIVE:To evaluate the slip resistance of different t...

journal_title：Gerontology

authors： Menz HB,Lord ST,McIntosh AS

更新日期：2001-05-01 00:00:00

abstract：BACKGROUND:compared with other vertebrate taxa, mammals possess a very limited capacity for appendage regeneration. The antlers of deer are an exception in that they are periodically lost and fully regenerated throughout the life of an individual. OBJECTIVE:in this paper we compare certain aspects of antler regenerati...

journal_title：Gerontology

authors： Kierdorf U,Kierdorf H

更新日期：2011-01-01 00:00:00

abstract：:Induced tyrosine aminotransferase from adult and old rat liver was purified and its properties were studied. No differences could be detected for any physicochemical properties studied, i.e. specific activity, molecular weight, isoelectric point, thermostability, sensitivity to trypsin, Km for pyridoxal phosphate. Mor...

journal_title：Gerontology

authors： Szajnert MF,Schapira F

更新日期：1983-01-01 00:00:00

abstract：:Acquisition of immunologic self-tolerance by clonal deletion in the thymus is concluded to be a critical process in immune aging and is found to be transiently protected from genetic instability by means of a feedback surveillance which functions at the expense of chronic thymic involution. In the immune control of ma...

journal_title：Gerontology

authors： Hartwig M

更新日期：1994-01-01 00:00:00

abstract：:Dietary intake, sunlight exposure and 25-hydroxy-vitamin D levels were estimated in 62 patients admitted to a geriatric assessment unit. There was a significant correlation between vitamin D intake and 25-hydroxy-vitamin D levels but none between sunlight exposure and these. This suggests that in old age dietary defic...

journal_title：Gerontology

authors： Nayal AS,MacLennan WJ,Hamilton JC,Rose P,Kong M

更新日期：1978-01-01 00:00:00

abstract：BACKGROUND:Werner's syndrome, a rare autosomal recessive disorder, is characterized by features of premature aging. Seventy-five percent of the alleles of Japanese patients with Werner's syndrome have one of three major mutations. OBJECTIVE:To determine the genotype of a patient with Werner's syndrome. METHODS:We dia...

journal_title：Gerontology

authors： Nakayama T,Ochiai T,Takahashi Y,Ohkubo K,Hironaga T,Kokubun S

更新日期：2002-07-01 00:00:00

abstract：BACKGROUND:Health care providers often believe that individuals with cognitive disturbance are unaware of their deficits. The term unawareness was first used to describe hemiplegia following right hemisphere stroke but has since been applied to unawareness of any neurological or neuropsychological deficit. Clinicians u...

journal_title：Gerontology

authors： McDougall GJ

更新日期：1998-01-01 00:00:00

abstract：:Some authors have hypothesised that life expectancy at birth could reach 100 years in developed countries in the next decades. Using recent data for French women, it is shown that life expectancy changes from 1993 to 2016 are mainly linked to mortality rates of oldest women. In recent years, it happened that life expe...

journal_title：Gerontology

authors： Le Bourg E

更新日期：2019-01-01 00:00:00

abstract：BACKGROUND AND AIMS:Moderate physical exercise, dietary restriction as well as enriched environment in separate studies have been reported to delay some of the adverse effects of aging on brain function, parallel to an increase in brain-derived neurotrophic factor (BDNF). In order to elucidate these influences in a com...

journal_title：Gerontology

authors： Strasser A,Skalicky M,Hansalik M,Viidik A

更新日期：2006-01-01 00:00:00

abstract：:A mathematical model of survivorship kinetics is presented. It takes into account both deterministic and stochastic aspects of survival curves. Earlier reports [Piantanelli: Arch Gerontol Geriatr 1986;5:107-118; Piantanelli: Ann NY Acad Sci 1988; 521:99-109] described a model capable of making distinct predictions on ...

journal_title：Gerontology

authors： Piantanelli L,Rossolini G,Nisbet R

更新日期：1992-01-01 00:00:00