An increase in the concentration of free radicals, measured using electron spin resonance (ESR) spectroscopy, can reflect the degree of oxidative stress. An in vivo ESR spectroscopy technique has been developed to measure free radical reactions even in the whole animal non-invasively using nitroxide free radicals, which are sensitive to both redox state and ROS. Rates of penetration of nitroxide free radicals into the skin and their distribution in the skin have been measured by the ESR technique. Thus, the generation and distribution of radicals produced during normal metabolism or induced after irradiation of the skin by sunlight can be measured. (more…)

An international consensus statement on physical activity, fitness and health (Bouchard et al 1994) identifies six areas affected by physical exercise: body shape, bone strength, muscle strength, flexibility skeleton, physical fitness and motor fitness of metabolism. Other areas benefit from physical activity is cognitive function, mental health and adaptation to society. Exercise was defined as a regular activity that follows a specific pattern, and whose purpose is to achieve desirable results in terms of fitness, as a better general health or physical functioning. (more…)

The word cognizable is being used to access the features and functions of T cells which may still unknown or understood. In other words, aspects of the functioning of T cells and details of the operation that already exist and are waiting to be unveil.

The first visible effects of aging affect clonal restriction, and clonal dominance of T-cell as biomarkers of aging in the elderly (more…)

The population of man aged over 65 will exceed the number of children under 5 years old in 2040, for the first time in history, according to a study released by the Census Bureau United States, which warned of the impact that this development. It is predicted huge impact will occurs in both the developed and developing countries. Diverse area will affected by these changes in population’s composition. (more…)

The term biomarker, which is encountered with increasing frequency in the gerontological literature, is used with a variety of implicit or explicit definitions. In some contexts, a biomarker is expected to predict longevity; in other usages, it is expected to be correlated with physiological age; in still other, it is expected to be descriptive of a fundamental aspect of aging, and so on. (more…)

Biomarkers today are used by health practitioners and researchers in a variety of settings, including clinical settings, laboratories, and community-based surveys. Epidemiological studies using biomarkers have expanded our knowledge base about aging in the community, population differences in health, and the clinical significance of many biomarkers. (more…)

Aging theories cover the physiological, genetic, biochemical properties of a typical organism, and the way these properties change with time. Theories of genetic dealing with the identity of aging obesity genes, accumulation of errors in the genetic machinery, programmed senescence, and telomeres theory. Biochemical theories are concerned with generation of free radicals, the rate of living, energy metabolism, and the health of mitochondria. While Theory of Physiological deal most entirely with the endocrine system and the purpose of hormones in governing the rate of cellular aging. (more…)