PMID- 12453825 OWN - NLM STAT- MEDLINE DCOM- 20030321 LR - 20171116 IS - 0193-1849 (Print) IS - 0193-1849 (Linking) VI - 284 IP - 3 DP - 2003 Mar TI - Influence of growth hormone on bone marrow adipogenesis in hypophysectomized rats. PG - E566-73 AB - The hypophysectomized rat has been used as a model to study the effects of growth hormone deficiency on bone. Here, we have investigated the influence of growth hormone administration to hypophysectomized rats (HX) for 6 wk on accumulation of triglycerides in bone marrow and on the differentiation of primary marrow stromal cells into adipocytes under in vitro conditions. We found that hypophysectomy significantly increased triglyceride concentration in bone marrow, which was attenuated by growth hormone administration. Primary bone marrow stromal cells derived from HX rats also had more adipocytes at confluence compared with growth hormone-treated hypophysectomized (GH) rats. When stimulated with 3-isobutyl-1-methylxanthine plus dexamethasone (IBMX-Dex), preadipocyte colony counts increased more significantly in GH rats. Markers of adipocyte differentiation were higher in HX than in control or GH rats at confluence. However, after stimulation with IBMX-Dex, increased expression of markers was seen in GH compared with HX rats. In conclusion, growth hormone administration to hypophysectomized rats attenuated triglyceride accumulation in bone marrow and inhibited the differentiation of stromal cells into adipocytes in vitro. FAU - Appiagyei-Dankah, Yaw AU - Appiagyei-Dankah Y AD - Division of Pediatric Endocrinology, Winthrop-University Hospital, Mineola, NY 11501, USA. FAU - Tapiador, Carmen D AU - Tapiador CD FAU - Evans, Jodi F AU - Evans JF FAU - Castro-Magana, Mariano AU - Castro-Magana M FAU - Aloia, John F AU - Aloia JF FAU - Yeh, James K AU - Yeh JK LA - eng PT - Journal Article DEP - 20021126 PL - United States TA - Am J Physiol Endocrinol Metab JT - American journal of physiology. Endocrinology and metabolism JID - 100901226 RN - 0 (Biomarkers) RN - 0 (Triglycerides) RN - 9002-72-6 (Growth Hormone) SB - IM MH - Adipocytes/*cytology/physiology MH - Animals MH - Biomarkers MH - Bone Marrow Cells/*cytology/*metabolism MH - Cell Differentiation/drug effects MH - Cells, Cultured MH - Cellular Senescence/physiology MH - Growth Hormone/*pharmacology MH - *Hypophysectomy MH - Rats MH - Rats, Sprague-Dawley MH - Stem Cells/cytology MH - Stromal Cells/cytology MH - Triglycerides/*metabolism EDAT- 2002/11/28 04:00 MHDA- 2003/03/22 04:00 CRDT- 2002/11/28 04:00 PHST- 2002/11/28 04:00 [pubmed] PHST- 2003/03/22 04:00 [medline] PHST- 2002/11/28 04:00 [entrez] AID - 00213.2002 [pii] AID - 10.1152/ajpendo.00213.2002 [doi] PST - ppublish SO - Am J Physiol Endocrinol Metab. 2003 Mar;284(3):E566-73. doi: 10.1152/ajpendo.00213.2002. Epub 2002 Nov 26.