نتایج جستجو برای: hypervitaminosis a
تعداد نتایج: 13431831 فیلتر نتایج به سال:
The dose of vitamin D that some researchers recommend as optimally therapeutic exceeds that officially recognized as safe by a factor of two; it is therefore important to determine the precise mechanism by which excessive doses of vitamin D exert toxicity so that physicians and other health care practitioners may understand how to use optimally therapeutic doses of this vitamin without the risk...
Pathologic fractures in children may be due to various causes. Rarely, it may be the presenting symptom of neurofibromatosis. A misdiagnosis of Rickets and Vitamin D supplementation in such a case may wreak havoc in the form of iatrogenic hypervitaminosis D. We report one such case.
Vitamin D plays an important role in Ca(2+) homeostasis by controlling Ca(2+) (re)absorption in intestine, kidney, and bone. The epithelial Ca(2+) channel TRPV5 mediates the Ca(2+) entry step in active Ca(2+) reabsorption. TRPV5 knockout (TRPV5(-/-)) mice show impaired Ca(2+) reabsorption, hypercalciuria, hypervitaminosis D, and intestinal hyperabsorption of Ca(2+). Moreover, these mice demonst...
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