Vitamin A deficiency in the domestic fowl

Lowe, John; Morton, R. A.; Cunningham, N. F.; Vernon, J.

doi:10.1042/bj0670215

Cited by 32 publications

(16 citation statements)

References 10 publications

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“…(Tables 6 and 7). Lowe et al (1957) found vitamin E in cat, dog and sheep kidney, the concentration in cat kidney being very high compared with the other two species. The total lipid content of cat kidney is high compared with other species (Mottram, 1916;Turner, 1931 figure (see text).…”

Section: Resultsmentioning

confidence: 99%

“…The unsaponifiable matter was chromatographed on alumina (Brockmann grade 3), as described in previous papers Lowe et al 1957). Grade 0 alumina (P. Spence and Co., Widnes) was partially deactivated with water to Brockmann grade 3, and as a rule 10 g. was taken for each 100 mg. of unsaponifiable matter.…”

Section: Methodsmentioning

confidence: 99%

“…Much of the material used by Lowe et al (1957) was from healthy animals which had been killed only a very short time before the kidney tissue was saponified. Post-mortem changes were therefore usually small and often minimal.…”

Section: Unsaponifiable Fraction Of Lipid From Normal Andmentioning

confidence: 99%

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Unsaponifiable fraction of lipid from normal and diseased human kidney

Mervyn

Morton

1959

Biochemical Journal

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Unsaponifiable fraction of lipid from normal and diseased human kidney

Mervyn

Morton

1959

Biochemical Journal

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“…However,vitamin . 2 I. BRUCKENTAL, I. ASCARELLI AND A. BONDI I974 response in chicks had also been mentioned by Lowe, Morton, Cunningham & Vernon (1957). The reduction in growth caused by lack of vitamin A indicates the occurrence of marked changes in the rate of protein metabolism.…”

mentioning

confidence: 95%

Effect of vitamin A deficiency on protein catabolism in chicks

1974

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1. The changes in the concentration of some enzymes and their metabolites were studied in the first stages of vitamin A deficiency in chicks.2. Kidney arginase (EC3.5.3.1) and liver xanthine dehydrogenase activities had increased even before complete disappearance of vitamin A from the plasma. Similarly, an increase was found in plasma uric acid, and plasma urea also increased but to a lesser extent. Liver proteolytic activity also was slightly increased by vitamin A deficiency.3. Kidney D-amino acid oxidase (EC1.4.3.3) activity and plasma concentrations of total protein and free amino acids were not affected, at least in the first stages of the deficiency.4. Oral dosing of deficient chicks with retinyl palmitate to provide 300 μg retinol, 24 h before killing, brought about a decrease in the activities of both enzymes and of plasma uric acid, and an increase in plasma urea.5. Dietary levels of vitamin A were reflected not only in the liver concentrations of the vitamin but also in the plasma concentrations.

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“…Vitamin A deficiency results in a reduction in comb size, underdeveIoped testes, a decrease in sperm concentration and motility, and an increase in abnormal sperms (Craft, M'Elroy & Penquite, 1926; Burrows & Titus, 1938; Garcia & Paredes, 1957; Lowe, Morton, Cunningham & Vernon, 1957). Adamstone & Card (1934) investigated the effect of a practical-type diet in which vitamin E had been destroyed by ethereal ferric chloride and found that by the end of the 2nd year some birds had become sterile and showed degenerative changes in the testes.…”

Section: Nutrition and Fertility In The Malementioning

confidence: 99%