Biological Marker of Aging
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  Biological Marker of Aging

Biological Marker of Aging

    Any physiological marker that appears to be universal in an aging population.


The process of becoming older, a process that is genetically determined and environmentally modulated.


Biologic evolution
Biologic evolution was contrasted with cultural (social) evolution in 1968 by A.G. Motulsky who pointed out that biologic evolution is mediated by genes, shows a slow rate of change, employs random variation (mutations) and selection as agents of change, new variants are often harmful, these new variants are transmitted from parents to offspring, the mode of transmission is simple, complexity is achieved by the rare formation of new genes by chromosome duplication, biologic evolution occurs with all forms of life, and the biology of humans requires cultural evolution.

Biological chemistry
Another name for biochemistry.

Biological Response Modifier
Any molecule that can modify the biological response of cells to changes in its external environment.

Biological safety level 1
Level 1 biosafety.

Biological safety level 2
Level 2 biosafety.

Biological safety level 3
Level 3 biosafety.

Biological safety level 4
Level 4 biosafety.

Biology, molecular
See: Molecular biology.

The emission of light by organisms.


Binding proteins
Proteins that bind to water-soluble hormones, such as sex hormones, cortisol, and thyroid; or certain water-soluble proteins, such as insulin-like growth factor to maintain stable circulating levels of the hormone in the bloodstream.

Biological Marker of Aging

Biological Response Modifier
Any molecule that can modify the biological response of cells to changes in its external environment.

Blood Glucose
The primary source of energy for the brain. Elevated blood glucose levels cause diabetes and accelerate aging.

The life-maintaining fluid which is made up of plasma, red blood cells (erythrocytes), white blood cells (leukocytes), and platelets; blood circulates through the body's heart, arteries, veins, and capillaries; it carries away waste matter and carbon dioxide, and brings nourishment, electrolytes, hormones, vitamins, antibodies, heat, and oxygen to the tissues.

Surgical removal of a piece of tissue from a person for microscopic examination to make a diagnosis (eg to determine whether abnormal cells such as cancer cells are present).

A chemical compound that either donates hydroxide ions or absorbs hydrogen ions when dissolved in water. Bases and acids are referred to as opposites because the effect of an acid is to increase the hydronium ion concentration in water, whereas bases reduce this concentration. Arrhenius bases are water-soluble and always have a pH greater than 7 in solution.

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