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modulation of the transcription of cell cycle proteinsthe 125-ohd compound calcitriol is present in the blood complexes to the vitamin
define bone growth and development calcification of osteoid tissue vitamin d participates in metabolic processes associated with bone growth and
define mineralizations and formation of new bonevitamin d plays a role in the synthesis of a prominent non collage nous protein osteocalcin a vitamin
define functions of vitamin dvitamin d is required to maintain normal blood levels of calcium and phosphate which are in turn needed for the normal
define the sources of vitamin dvitamin d also called the sunshine vitamin is easily manufactured in the skin from 7-dehydro cholesterol on exposure
explain the interaction of vitamin a with ironiron iron status of an individual correlates with vitamin a the deficiency of vitamin a has been
explain the interaction of vitamin a with zincits deficiency interferes with vitamin a metabolism it leads to a reduction in the synthesis of plasma
explain the interaction of vitamin a with proteinsproteins the protein status of an individual influences vitamin a status and transport because an
explain the interaction of vitamin a with vitamin eof the various nutrients the interaction of vitamin e proteins zinc and iron with vitamin a is of
explain the dark adaptation of vitamin ain the early stages of vad the individual cannot see objects in dim light this phenomenon is used as a
explain the liver biopsy assaysthese are used to measure the total vitamin a stores as well us the response in levels of vitamin a relative to
explain dietary assessment criteria for vitamin aseveral methods can be adopted for the dietary assessment of vitamin a such as food frequency weekly
explain the conjunctival impression cytology cicconjunctival impression cytology cic is a simple rapid and inexpensive method which is suitable for a
explain about the toxicity - fat soluble vitaminbecause vitamin a is fat-soluble and can be stored primarily in the liver routine consumption of
define conditions associated with increased need for vitamin aconditions and populations associated with increased need for vitamin a includes young
explain the deficiency and toxicity of vitamin awho defines vad as tissue concentrations of vitamin a low enough to have adverse health consequences
define role in protein metabolism and growthsevere vitamin a deficiency results in abnormal rna metabolism and protein synthesis and hence interferes
determine the role as antioxidantsome carotenoids in addition to serving as a source of vitamin a have been shown lo function as antioxidants studies
define integrity of epithelial tissuesvitamin a is essential for the integrity of the mucous-secreting cells in fact vitamin a maintains the health
define the role of vitamin a in immune responsevitamins a is essential to normal immune function and- regulation as discussed above during vitamin a
define role in growth and cellular differentiationthe growth and differentiation of epithelial cells throughout the body are especially affected by
define the functions of vitamin avitamin a retinol is an essential nutrient needed in small amounts by humans for the normal functioning of the
define factors influencing the efficiency of bioconversion amount of provitamin a presented to the cell differential conversion by stereoisomeric
define factors influencing uptake from lumen to intestinal cells inhibition by intrinsic matrix inhibition by dietary fiber sources
explain the storage of vitamin athe primary organ for storage of vitamin a is the liver reserves are found in the stellate cells as mentioned above