PMID- 26482573 OWN - NLM STAT- MEDLINE DCOM- 20161213 LR - 20220408 IS - 1530-8022 (Electronic) IS - 0885-3282 (Linking) VI - 30 IP - 7 DP - 2016 Feb TI - Intermittent administration of human parathyroid hormone (1-34) increases fixation of strontium-doped hydroxyapatite coating titanium implants via electrochemical deposition in ovariectomized rat femur. PG - 952-60 LID - 10.1177/0885328215610898 [doi] AB - Previous studies have demonstrated the effect of human parathyroid hormone (1-34) (PTH) or strontium-doped hydroxyapatite coating (Sr-HA) on osteoporotic bone implantation. However, reports about effects of PTH plus Sr-HA on bone osseointegration of titanium implants in a state of osteoporosis were limited. This study was designed to investigate the effects of intermittent administration of human parathyroid hormone (1-34) on strontium-doped hydroxyapatite coating (Sr-HA) implant fixation in ovariectomized (OVX) rats. Twelve weeks after bilateral ovariectomy, all animals were randomly divided into four groups including control group, Sr group, PTH group and PTH+Sr group. Forty OVX rats accepted implant insertion in the distal femurs, control group, and PTH group with HA implants and the Sr group and PTH+Sr group with Sr-HA implants. Animals from PTH group and PTH+Sr group then randomly received PTH (60 microg/kg, 3 times a week) until death at 12 weeks. After 12-week healing period, implants from group PTH+Sr revealed improved osseointegration compared with other treatment groups, which is manifested by the exceeding increase of bone area ratio and bone-to-implant contact, the trabecular microarchitecture and the maximal push-out force displayed by tests like histomorphometry, micro-CT, and biomechanics evaluation. These results demonstrated that PTH+ Sr-HA coatings could enhance implant osseointegration in OVX rats, and suggested the feasibility of using this method to improve implant fixation in osteoporotic bone. CI - (c) The Author(s) 2015. FAU - Tao, Zhou-Shan AU - Tao ZS AD - Department of Orthopaedic Surgery, Second Affiliated Hospital of Wenzhou Medical University, Zhejiang, PR China. FAU - Zhou, Wan-Shu AU - Zhou WS AD - Endocrine & Metabolic Diseases Unit, Affiliated Hospital of Guizhou Medcial University, Guizhou, PR China. FAU - Qiang, Zhou AU - Qiang Z AD - Department of Orthopaedic Surgery, Second Affiliated Hospital of Wenzhou Medical University, Zhejiang, PR China. FAU - Tu, Kai-kai AU - Tu KK AD - Department of Orthopaedic Surgery, Second Affiliated Hospital of Wenzhou Medical University, Zhejiang, PR China. FAU - Huang, Zheng-Liang AU - Huang ZL AD - Department of Orthopaedic Surgery, Second Affiliated Hospital of Wenzhou Medical University, Zhejiang, PR China. FAU - Xu, Hong-Ming AU - Xu HM AD - Department of Orthopaedic Surgery, Second Affiliated Hospital of Wenzhou Medical University, Zhejiang, PR China. FAU - Sun, Tao AU - Sun T AD - Department of Orthopaedic Surgery, Second Affiliated Hospital of Wenzhou Medical University, Zhejiang, PR China. FAU - Lv, Yang-Xun AU - Lv YX AD - Department of Orthopaedic Surgery, Wenzhou Central Hospital, Wenzhou, Zhejiang, PR China. FAU - Cui, Wei AU - Cui W AD - Sichuan Provincial Orthopedics Hospital, Sichuan, PR China. FAU - Yang, Lei AU - Yang L AD - Department of Orthopaedic Surgery, Second Affiliated Hospital of Wenzhou Medical University, Zhejiang, PR China tzs19900327@163.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20151018 PL - England TA - J Biomater Appl JT - Journal of biomaterials applications JID - 8813912 RN - 0 (Bone Density Conservation Agents) RN - 0 (Bone Substitutes) RN - 0 (Coated Materials, Biocompatible) RN - 0 (Hydroxyapatites) RN - 0 (PTH protein, human) RN - 0 (Parathyroid Hormone) RN - 0 (strontium hydroxyapatite) RN - 91D9GV0Z28 (Durapatite) RN - D1JT611TNE (Titanium) RN - YZS2RPE8LE (Strontium) SB - IM MH - Animals MH - Biomechanical Phenomena MH - Bone Density Conservation Agents/chemistry MH - Bone Substitutes/*chemistry MH - Bone and Bones/pathology MH - Coated Materials, Biocompatible/chemistry MH - Durapatite/*chemistry MH - Electrochemistry MH - Female MH - Femur/*pathology MH - Humans MH - Hydroxyapatites/*chemistry MH - Materials Testing MH - Osseointegration MH - Osteoporosis/drug therapy/physiopathology MH - Parathyroid Hormone/*administration & dosage/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Stress, Mechanical MH - Strontium/*chemistry MH - Titanium/*chemistry MH - X-Ray Microtomography OTO - NOTNLM OT - Osteoporosis OT - hydroxyapatite-coated titanium implants OT - osseointegration OT - parathyroid hormone (1-34) OT - strontium EDAT- 2015/10/21 06:00 MHDA- 2016/12/15 06:00 CRDT- 2015/10/21 06:00 PHST- 2015/10/21 06:00 [entrez] PHST- 2015/10/21 06:00 [pubmed] PHST- 2016/12/15 06:00 [medline] AID - 0885328215610898 [pii] AID - 10.1177/0885328215610898 [doi] PST - ppublish SO - J Biomater Appl. 2016 Feb;30(7):952-60. doi: 10.1177/0885328215610898. Epub 2015 Oct 18.