These results suggest that calcium regulates CaBP-D9k expression by modulating the circulating 1,25-dihydrxyvitamin D(3) level and that VDR is thus required for the dietary calcium-induced suppression of CaBP-D9k expression. Calcium regulation of the CaBP-D9k level may represent an important mechanism by which animals maintain their calcium balance.
PMID: 15866228 [PubMed - indexed for MEDLINE]