Bone protective effects following ethanolic extract (Otostegia persica) administration in streptozotocin-induced diabetic rats: histomorphometric study
2015
Rezaeian, Maryam | Dilmaghanian, Aydin | Shomali, Tahoora | Adibmoradi, Masoud | Rasooli, Ali
BACKGROUND: Medical plants have been recently used to treat diabetes. Osteoporosis is one of diabetes side effects and increases the risk of bone fracture in diabetic patient. OBJECTIVES: The purpose of the present study was to investigate the potential bone protective effects of O.persica ethanolic extract in streptozotocin-induced diabetic rats. METHODS: Forty male rats were randomly divided into five equal groups and treated as follows: group 1 (control); group 2 (STZ group): received STZ 50 mg/kg by a single IP injection; groups 3, 4 and 5 treated with STZ as above+ 200 mg/kg, 300 mg/kg and 450 mg/kg of O. persica extract per day by oral gavage, respectively. On day 29, serum taken for glucose level measurement and left femoral and tibio-fibular bones were dissected for histomorphometric study, while L4 vertebrate were removed for determination of ash weight. RESULTS: 300mg/kg of extract reduced serum glucose levels. Epiphyseal and metaphyseal Trabecular thickness as well as epiphyseal bone area/tissue area significantly decreased in STZ group. O. persica extract at the dosage of 200 mg/kg reversed all these parameters to the control level. No significant difference observed in osteoid thickness among different groups. Ash weight of L4 vertebrate in rats treated with 300 and 450 mg/kg of extract was significantly lower than other groups. CONCLUSIONS: The results show that ethanolic extract of O. persica has bone protective effects in STZ-treated rats.
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