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Kaplan Qbank USMLE



Author4 Posts
  #1

where are the receptors for steroids located


a osteoclast
b osteoblast
c both

  #2

Osteclast.

I have come across a situation which gives a hypoestrogen state and asks your question.The role of RANK ligand on osteoclsts is srongly emphasized in bone resorption.You can get a detail explanation in High yield Histology which has some ambiguity .But given the situation I go only for Osteoclast..because you clearly stated Steroid.The same thing holds true for 1,25-(OH)2 vitamin D which acts on Osteoblasts to secrete IL-1 which again acts on Osteoclasts and Calcitonin which act on Osteoclasts and cause bone resorption.I think this is a good start for subsequent discussion and can come up with a conclusion.


___________________
sany

  #3

hi sany......high yield says that the steroid hormones include the vitamin d which clearly acts on osteoblasts....but they havent mentioned specifically about the exogenous steroids (taken for adrenal insufficiency)receptors.....also i want to correct you that osteoBLAST have RANKL NOT RANK WHICH IS ON MACROPHAGES.......it is only when the RANKL AND RANK interact the macrophages become osteoclast...interesting hmmm......

  #4

Thank you..I am waiting to learn more.

___________________
sany







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