Additive effects of estrogen deficiency and diabetes on bone mineral density in rats
| Autor: | Masaru Nagasaki, Naoya Nakai, Yuzo Sato, Isao Ohsawa, Masumi Hattori, Michitaro Fukuharu, Yoshiharu Oshida, Juichi Sato, Yoshiharu Shimomura, Shinkan Tokudome |
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| Rok vydání: | 2000 |
| Předmět: |
musculoskeletal diseases
medicine.medical_specialty Bone density Bone disease Endocrinology Diabetes and Metabolism Ovariectomy Osteoporosis Osteocalcin Bone remodeling Diabetes Mellitus Experimental Endocrinology Calcitriol Bone Density Internal medicine Diabetes mellitus Internal Medicine medicine Animals Femur Rats Wistar Bone mineral business.industry Body Weight Estrogens General Medicine musculoskeletal system medicine.disease Alkaline Phosphatase Spine Rats Calcium Dietary Ovariectomized rat Female business Energy Intake |
| Zdroj: | Diabetes research and clinical practice. 48(1) |
| ISSN: | 0168-8227 |
| Popis: | We investigated the combined effects of estrogen deficiency and diabetes on bone mineral density (BMD) and bone metabolism in rats. Ten-week-old, female rats were randomly divided into four groups: controls (C), an ovariectomized group (O), a streptozotocin-induced diabetic group (S), and a combined ovariectomy and streptozotocin-induced diabetic group (OS). The BMD of the lumbar spine and the femur were measured before grouping and at 23 weeks old. At the end of the experiment, blood samples were obtained via cardiac puncture, and bone gla protein (BGP), tartrate-resistant acid phosphatase (TRAP) and 1,25-dihydroxyvitamin D levels were measured. The rats in the C, O, S, and OS groups, in that order, had higher levels of BMD of the lumbar spine and femur at 23 weeks of age. The BGP levels in the S and OS groups were significantly lower than in C and O groups. Significantly higher 1,25-dihydroxyvitamin D was observed in the O group compared with the C, S and OS groups. No differences were obtained in TRAP among four groups. Our data suggest that the combined effects of estrogen deficiency and diabetes on BMD are not synergistic or counteractive but additive. |
| Databáze: | OpenAIRE |
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