PMID- 12476790 OWN - NLM STAT- MEDLINE DCOM- 20030128 LR - 20181130 IS - 1568-0088 (Print) IS - 1568-0088 (Linking) VI - 2 IP - 2 DP - 2002 Jul TI - Molecular basis of hyperparathyroidism and potential targets for drug development. PG - 167-79 AB - Our appreciation of the molecular pathogenesis of primary hyperparathyroidism (HPT) has seen great advances over the past decade. This improved understanding may well lead to the development of new treatment options that are specifically targeted to defective pathways. This review summarizes recent advances in the molecular basis of HPT and associated endocrinopathies, and discusses the potential for these and future findings to provide targets for alternative approaches to therapy. The only proven contributors to common sporadic HPT, by virtue of clonal genetic abnormalities, are the cyclin D1 and MEN1 genes. Cyclin D1 is an oncogene that encodes a key regulator of the cell cycle, while MEN1 is a tumor suppressor gene that has also been implicated in familial multiple endocrine neoplasia type 1 (MEN1), in which primary HPT is common. In addition, other key parathyroid regulatory pathways may play a role in HPT pathogenesis. 1,25 (OH)2-vitamin D. Ca2+ and phosphate are regarded as principal regulators of parathyroid cell proliferation and PTH secretion. Therefore, prime candidate targets include the Ca2+ sensing receptor (CASR) gene, the vitamin D receptor (VDR) gene, a putative phosphate receptor gene, their cognate gene products, and other genes or proteins involved in their respective biochemical pathways. Attempts to identify new therapies based specifically on the defective pathways in HPT could complement or eventually supplant traditional approaches. FAU - Krebs, L J AU - Krebs LJ AD - Center for Molecular Medicine, University of Connecticut Health Center, 263 Farmington Avenue, Farmington, CT 06030-3101, USA. Krebs@up.uchc.edu FAU - Arnold, A AU - Arnold A LA - eng GR - 5K16-DE00157/DE/NIDCR NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PT - Review PL - United Arab Emirates TA - Curr Drug Targets Immune Endocr Metabol Disord JT - Current drug targets. Immune, endocrine and metabolic disorders JID - 101121150 RN - 0 (Parathyroid Hormone) RN - 0 (Phosphates) RN - 0 (Receptors, Calcitriol) RN - 0 (Receptors, Calcium-Sensing) RN - 0 (Receptors, Cell Surface) RN - 136601-57-5 (Cyclin D1) RN - SY7Q814VUP (Calcium) SB - IM MH - Animals MH - Calcium/metabolism MH - Cyclin D1/genetics MH - Genes, Tumor Suppressor MH - Genes, bcl-1 MH - Humans MH - Hyperparathyroidism/*drug therapy/*genetics MH - Multiple Endocrine Neoplasia Type 1/genetics MH - Parathyroid Hormone/metabolism MH - Phosphates/metabolism MH - Receptors, Calcitriol/genetics/physiology MH - Receptors, Calcium-Sensing MH - Receptors, Cell Surface/genetics/physiology RF - 111 EDAT- 2002/12/13 04:00 MHDA- 2003/01/29 04:00 CRDT- 2002/12/13 04:00 PHST- 2002/12/13 04:00 [pubmed] PHST- 2003/01/29 04:00 [medline] PHST- 2002/12/13 04:00 [entrez] PST - ppublish SO - Curr Drug Targets Immune Endocr Metabol Disord. 2002 Jul;2(2):167-79.