| Author | 7 Posts |
mangoshaikh
Forum Newbie
Topics: 3
Posts: 57
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can someone explain the relationship between Ca++, PTH and vit D?
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| naamas2005
Forum Newbie
Topics: 0
Posts: 3
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Vit D3
Enhances Ca2+ absorption from intestine by forming:
calcium-stimulated ATPase and calcium-binding protein in brush border of intestinal epithelial cells, both increasing absorbtion of Ca2+.
Also it promotes bone calcification by causing Ca2+ transport from ECF thru osteocytic membrane into bone fluid.
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PTH
Inc. blood Ca2+ conc due to inc. calcium absorption from bone due to activation of “Calcium pump” in osteocytic membrane and by activating ‘osteoclasts’.
Also decreses calcium excretion by kidneys and increases Ca2+absorption in distal-tubules & collecting ducts.
Parathyroid hormone also converts inactive vit D to its active form.
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| hollmann
Forum Newbie
Topics: 0
Posts: 7
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..i need to know the funtion of de Ca in the neurotrasmition ??please
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| ramo7
Forum Senior
Topics: 15
Posts: 126
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Ca binding increases the activity of receptors for the neurotransmitters..thereby facilitating their uptake and processing for subsequent neurotransmission.
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| skyhigh
Forum Guru
Topics: 105
Posts: 561
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What happens to Ca+ and Phosphate levels in chronic renal failure?(leading to secondary hyperparthyroidism.)
Edited by skyhigh on 03/16/06 - 12:46 PM
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| ing
Forum Guru
Topics: 45
Posts: 435
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chronic renal failure, the kidney dump less phosphate -> serum phosphate increase -> PTH decrease -> ca++ decrease.
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| ing
Forum Guru
Topics: 45
Posts: 435
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sorry I messed up.
chronic renal failure, the kidney dump less phosphate -> serum phosphate increase -> ca++ decrease -> PTH increase.
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