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PubMed1977

Vitamin levels in low-birth-weight newborn infants and their mothers.

The cord blood of 50 normal-birth-weight neonates (more than 2,500 grams) and 50 low-birth-weight neonates (less than 2,500 grams) and the respective mother's blood were analyzed for folate, vitamin B6, riboflavin, nicotinate, pantothenate, thiamin, biotin, vitamin B12, vitamin A, and beta-carotene concentrations at parturition. No mothers had received supplemental vitamin intake. Except for vitamin A and beta-carotene, maternal vitamin levels were lower than those of neonates in all instances. Vitamin levels in the blood of low-birth-weight neonates were the same of those of normal-birth-weight infants except for significantly lower folate, vitamin B12, and pantothenate levels.

Biotin↗
PubMed1966

Pantothenate and coenzyme A in bacterial growth.

Toennies, G. (Temple University School of Medicine, Philadelphia, Pa.), D. N. Das, and F. Feng. Pantothenate and coenzyme A in bacterial growth. J. Bacteriol. 92:707-713. 1966.-The effect of environmental pantothenate levels on the growth of Streptococcus faecalis 9790 was studied in terms of growth rate, depletion phenomena, cellular coenzyme A (CoA) content, and differential rates of wall and membrane synthesis. Low concentrations of pantothenate yielded normal exponential growth curves up to peak turbidities which are a function of pantothenate concentration. Attainment of these peaks was followed by lysis. Under such conditions, bacterial CoA increased initially in proportion with cell substance, but attained a peak level much earlier than cell substance, and then gradually decreased down to vanishing amounts. With higher pantothenate concentrations, cellular CoA levels increased to a maximum, and, under these conditions, the CoA content remained constant during exponential growth. Four-fifths of the pantothenate requirement of growing cells was eliminated by environmental oleate and palmitate. When CoA disappeared during growth on low pantothenate levels, cell wall synthesis seemed to continue at nearly normal rates, but membrane synthesis was severely curtailed. The data suggest that in fermentative organisms pantothenate action might be confined to wall and membrane synthesis, that these two processes differ in their quantitative dependence on pantothenate, and that pantothenate might occur in the form of acyl carrier protein as well as CoA.

Cell Wall↗