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vitamin a deficiency/phosphatase

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Vitamin A deficiency and acid hydrolases: beta-glycerophosphate phosphatase in rat liver.

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Vitamin A deficiency stimulated phosphatase activity in epiphyseal chick cartilage.

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Organ culture study of effect of vitamin-A-deficiency on rat third molar development.

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A culture procedure for rat third molars suitable for nutritional-developmental studies is described. Unerupted third molars from 12-day-old rats were cultured in BGJb media containing 20 per cent rat serum and supplemented with 25 mM HEPES buffer, 25 mg ascorbic acid, 20 mg L-glutamine, 12 mg
In spite of the fact that vitamin A exerts an obvious effect on cell membrane permeability, the specific mechanisms of vitamin A participation in stabilizing the cell membrane remain unclear. Therefore studies on the effect vitamin A produces on the main and reserve pathways of the synthesis of

[Study of hydrolase activity of rat small intestine mucosa with vitamin A deficiency].

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The activity of amylase, alkaline phosphatase and lipase in the pancreas, in the mucosa and on the surface of small intestine (turned out segments) was studied for elucidating the effect of vitamin A deficiency on the synthesis of the studied enzymes and their translocation to the surface of

Vitamin A deficiency interferes with proliferation and maturation of cells in the chicken small intestine.

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1. The effect of vitamin A on the small intestine was examined in vitamin-A-deficient meat-type chickens. 2. Maturation and activity of the small intestinal cells were assayed by detection of proliferating cells with proliferating cells nuclear antigen, goblet cells with Alcian blue, mature cells
The present study investigated the effects of dietary vitamin A on immune function in the proximal intestine (PI), mid intestine (MI) and distal intestine (DI) of young grass carp (Ctenopharyngodon idella). Fish were fed graded levels of dietary vitamin A for 10 weeks, and then a challenge test

The effect of vitamin A deficiency and dietary alpha-tocopherol on the stability of rat-liver lysosomes.

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1. Vitamin A-deficient rats and pair-fed controls were maintained on either normal or raised amounts of dietary alpha-tocopherol. 2. Their livers were fractionated and ;free' and ;total' lysosomal phosphatase were determined in the various fractions. The rate of release of this enzyme was determined

Effect of vitamin A in enteral formulae for burned guinea-pigs.

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A burned guinea-pig model (30 per cent body surface area) was used to study the effects of dietary vitamin A. Sixty-five female guinea-pigs were infused enterally via gastrostomy feeding tubes with identical formulate (175 kcal/kg/day, 20 per cent of calories as protein) containing varying amounts

Ultrastructural changes in human prepubertal prostatic epithelium grown in vitro.

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Ultrastructural changes in the prepubertal human prostatic epithelium maintained in vitro are described and are compared with the ultrastructure of the same tissue before culture. In cultured cells, rough endoplasmic reticulum and Golgi complex are poorly represented and the latter also loses its

Isolation, characterization, and biological activity of retinyl phosphate from hamster intestinal epithelium.

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Epithelial cells from hamster small intestine, in short term culture, incorporated [carbinol-14C]retinol into a compound that is identical to synthetic retinyl phosphate, as judged by chromatography on DEAE-cellulose, silicic acid, and thin layers of silica gel. The biological compound displays the

Morphology of the rectinal pigment epithelium in the vitamin A deficient rat.

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Ultrastructural changes in the retinal pigment epithelium (RPE) and adjacent photoreceptor cells have been followed in the Wistar rat during the course of long-term vitamin A deficiency. Of particular interest has been the discovery of unusual concentric aggregates within the photoreceptor outer

Fine structure and cytochemistry of lysosomes in the Ito cells of the rat liver.

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Ultracytochemical studies of the performic acid-phosphotungstic acid (PFP) reaction and acid phosphatase (ACPase) activity in the Ito cells (fat-storing cells) of the rat liver revealed two kinds of lipid droplets: one surrounded by a structure giving PFP- and ACPase-positive reactions, recognized

Vitamin A exerts its activity at the transcriptional level in the small intestine.

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OBJECTIVE was to examine the effects of vitamin-A deficiency on the small intestinal morphology and on brush-border enzyme function and expression. METHODS Weanling male rats were fed a vitamin-A deficient (VAD), sufficient (VAS), or supplemented (VASUP) diet, or were pair-fed (PF) with the VAD
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