Can anyone explain the action of Vitamin D on kidney, bones and intestines?

Question

Can anyone explain the action of Vitamin D on kidney, bones and intestines?

Answer 1

vitamin D helps your body absorb calcium

Answer 2

try this site " http://www.google.co.id/search?hl=id&q=v...  " hope it usefull:)

Answer 3

OK, basically it promotes bone remodelling in the long term - and does this by increasing absorption of calcium  and phosphate which are used in this process.

Bone - it acts synergistically with parathyroid hormone to promote bone formation

Kidney - 1. increases reabsorption of Ca2+ and phosphate (compatible with enabling new bone mineralisation),

2. stimulates increased expression of TRPV5 and TRPV6, calbindin D and NCX in distal collecting tubule and collecting duct cells, and 3. increases expression of type 2 Na+/Pi transporter in proximal straight tubule.

Gut - 1. increases absorption of Ca2+ and phosphate in small intestine which is caused by the increased expression of TRPV5 and TRPV6 and calbindin D (help in transport)(also increases the activity of existing ATPases in gut which absorb Ca2+). It also increases the type 3 Na+/Pi transporter.

Sorry if this was more detail that you wanted - you didn't really specify - and I'm revising this topic at the moment so... :)