title: Oral administration of phytocomponent p-hydroxycinnamic acid prevents bone loss in ovariectomized rats.
abstract: The preventive effect of phytocomponent p-hydroxycinnamic acid (HCA) on ovariectomy (OVX)-induced bone loss was investigated. HCA (250 or 500 microg/100 g body weight) was orally administered once daily for 30 days to OVX rats. The analysis using a peripheral quantitative computed tomography (pQCT) showed that OVX caused bone loss in the femoral-metaphyseal tissues. This change was significantly restored after the administration of HCA (250 or 500 microg/100 g body weight) to OVX rats. Mineral content, mineral density, and polar strength strain index in the femoral-metaphyseal tissues were significantly decreased in OVX rats. These decreases were significantly restored after the administration of HCA (500 microg/100 g) to OVX rats. Moreover, OVX caused a significant decrease in calcium content or alkaline phosphatase activity in the femoral-diaphyseal and -metaphyseal tissues. These decreases were significantly restored after the administration of HCA (250 or 500 microg/100 g) to OVX rats. Deoxyribonucleic acid (DNA) content in the diaphyseal or metaphyseal tissues was significantly increased in OVX rats. These increases were significantly restored after oral administration of HCA (500 microg/100 g). This study demonstrates that HCA has preventive effects on OVX-induced bone loss of rats in vivo.
authors.affiliation: Laboratory of Endocrinology and Molecular Metabolism, Graduate School of Nutritional Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan. yamamasa1155@yahoo.co.jp
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Yamaguchi
authors.forename: Ying Ling
authors.initials: YL
authors.lastname: Lai
authors.forename: Satoshi
authors.initials: S
authors.lastname: Uchiyama
authors.forename: Taeko
authors.initials: T
authors.lastname: Nakagawa
mesh_terms: D000284:Administration, Oral; D000818:Animals; D015519:Bone Density / Q000187:drug effects; D050071:Bone Density Conservation Agents / Q000008:administration & dosage* / Q000494:pharmacology; D001842:Bone and Bones / Q000033:anatomy & histology / Q000187:drug effects* / Q000378:metabolism / Q000473:pathology; D003373:Coumaric Acids / Q000008:administration & dosage* / Q000494:pharmacology; D005260:Female; D006801:Humans; D015663:Osteoporosis, Postmenopausal / Q000517:prevention & control*; D010052:Ovariectomy; D010936:Plant Extracts / Q000008:administration & dosage / Q000494:pharmacology; D011422:Propionates; D051381:Rats; D017208:Rats, Wistar
chemical_list: D050071:Bone Density Conservation Agents; D003373:Coumaric Acids; D010936:Plant Extracts; D011422:Propionates; C495469:p-coumaric acid