Vitamin D, osteoclast

[Hemichordate]

Advertisement - Members don't see this ad

I've been trying to find some info on this:

Does vitamin D have the same effect as PTH: raise blood Ca2+ levels, break down bone?

Or does it have opposite effects to those of PTH: lower blood Ca2+ levels and promote mineralization?

 

[matth87]

Vitamin D is part of cacitrol and is incorporated into the hormone via hydroxylation activation in the liver.

Cacitrol is responsible for keeping Phosphate levels in the blood higher so P reabsorbtion in kidneys and GI absorption of P. It works along side PTH and is actually stimulated a little bit by it, but deals more with phosphate then ca+.

Vitamin D is also used for the receptors to PTH, Calcitonin, and Calcitrol. If your going to get a question about it I would think all you have to know is it works in conjuntion with bone resorption and bone formation.

 

[Hemichordate]

Vitamin D is part of cacitrol and is incorporated into the hormone via hydroxylation activation in the liver.

Cacitrol is responsible for keeping Phosphate levels in the blood higher so P reabsorbtion in kidneys and GI absorption of P. It works along side PTH and is actually stimulated a little bit by it, but deals more with phosphate then ca+.

Vitamin D is also used for the receptors to PTH, Calcitonin, and Calcitrol. If your going to get a question about it I would think all you have to know is it works in conjuntion with bone resorption and bone formation.

So it has both Ca2+ lowering and raising effects?

 

[matth87]

So it has both Ca2+ lowering and raising effects?

Yeah.