According to the study of "Vitamin A and clefting: putative biological mechanisms" by Ackermans MM, Zhou H, Carels CE, Wagener FA, Von den Hoff JW., posted in US National Library of Medicine National Institutes of Health, researchers found that excessive vitamin A may disturb all three stages of palatogenesis: 1) during shelf outgrowth, it may decrease cell proliferation and thus prevent tissue development; 2) it may prevent shelf elevation by affecting extracellular matrix composition and hydration; and 3) during shelf fusion, it may affect epithelial differentiation and apoptosis, which precludes the formation of a continuous palate. In general, high doses of vitamin A affect palatogenesis through interference with cell proliferation and growth factors such as transforming growth factor β and platelet-derived growth factor. The effects of lower doses of vitamin A need to be investigated in greater depth in order to improve public health recommendations.
Friday, October 7, 2011
Vitamin A and Clefting
Posted by Chantel M. Contributed by US National Library of Medicine National Institutes of Health
According to the study of "Vitamin A and clefting: putative biological mechanisms" by Ackermans MM, Zhou H, Carels CE, Wagener FA, Von den Hoff JW., posted in US National Library of Medicine National Institutes of Health, researchers found that excessive vitamin A may disturb all three stages of palatogenesis: 1) during shelf outgrowth, it may decrease cell proliferation and thus prevent tissue development; 2) it may prevent shelf elevation by affecting extracellular matrix composition and hydration; and 3) during shelf fusion, it may affect epithelial differentiation and apoptosis, which precludes the formation of a continuous palate. In general, high doses of vitamin A affect palatogenesis through interference with cell proliferation and growth factors such as transforming growth factor β and platelet-derived growth factor. The effects of lower doses of vitamin A need to be investigated in greater depth in order to improve public health recommendations.
According to the study of "Vitamin A and clefting: putative biological mechanisms" by Ackermans MM, Zhou H, Carels CE, Wagener FA, Von den Hoff JW., posted in US National Library of Medicine National Institutes of Health, researchers found that excessive vitamin A may disturb all three stages of palatogenesis: 1) during shelf outgrowth, it may decrease cell proliferation and thus prevent tissue development; 2) it may prevent shelf elevation by affecting extracellular matrix composition and hydration; and 3) during shelf fusion, it may affect epithelial differentiation and apoptosis, which precludes the formation of a continuous palate. In general, high doses of vitamin A affect palatogenesis through interference with cell proliferation and growth factors such as transforming growth factor β and platelet-derived growth factor. The effects of lower doses of vitamin A need to be investigated in greater depth in order to improve public health recommendations.
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