PMID- 8305876 OWN - NLM STAT- MEDLINE DCOM- 19940317 LR - 20191101 IS - 0169-6009 (Print) IS - 0169-6009 (Linking) VI - 23 IP - 2 DP - 1993 Nov TI - Effect of transforming growth factor alpha, parathyroid hormone-related protein, or their combination on bone histomorphometry. PG - 105-11 AB - Transforming growth factor alpha (TGF alpha) has been implicated in the pathogenesis of inhibited bone formation in hypercalcemia of malignancy. We evaluated the effects of infusions of vehicle or TGF alpha (0.25 microgram/h), or parathyroid hormone-related protein (1-34) (PTHrP) (0.025 microgram/h) alone, or a combination of TGF alpha and PTHrP on bone histomorphometry in mice. The peptides were infused for 6 days via Alzet osmotic minipumps. TGF alpha alone, PTHrP alone, or a combination of the two resulted in an increase in bone resorption as well as bone formation parameters. The increase in bone formation with the combination of TGF alpha and PTHrP was significantly greater than that seen with either peptide alone. Therefore, it is unlikely that TGF alpha is the factor responsible for inhibited bone formation in hypercalcemia of malignancy. FAU - Kukreja, S C AU - Kukreja SC AD - Endocrinology Section, VA West Side Medical Center, Chicago, IL 60612. FAU - Rosol, T J AU - Rosol TJ FAU - D'Anza, J J AU - D'Anza JJ FAU - Wimbiscus, S A AU - Wimbiscus SA LA - eng PT - Journal Article PL - Ireland TA - Bone Miner JT - Bone and mineral JID - 8610542 RN - 0 (Parathyroid Hormone-Related Protein) RN - 0 (Proteins) RN - 0 (Transforming Growth Factor alpha) SB - IM MH - Animals MH - Bone Resorption MH - Bone and Bones/drug effects/*pathology MH - Drug Synergism MH - Infusion Pumps, Implantable MH - Male MH - Mice MH - Mice, Inbred BALB C MH - Parathyroid Hormone-Related Protein MH - Proteins/administration & dosage/*pharmacology MH - Transforming Growth Factor alpha/administration & dosage/*pharmacology EDAT- 1993/11/01 00:00 MHDA- 1993/11/01 00:01 CRDT- 1993/11/01 00:00 PHST- 1993/11/01 00:00 [pubmed] PHST- 1993/11/01 00:01 [medline] PHST- 1993/11/01 00:00 [entrez] AID - 10.1016/s0169-6009(08)80047-5 [doi] PST - ppublish SO - Bone Miner. 1993 Nov;23(2):105-11. doi: 10.1016/s0169-6009(08)80047-5.