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International Journal of Morphology

versión On-line ISSN 0717-9502

Resumen

KOPARAL, M et al. Effects of Melatonin on Tibia Bone Defects in Rats. Int. J. Morphol. [online]. 2016, vol.34, n.2, pp.763-769. ISSN 0717-9502.  http://dx.doi.org/10.4067/S0717-95022016000200053.

The aim of this study was to evaluate the effects of melatonin healing in a tibial bone defect model in rats by means of histopathological and immunohistochemistry analysis. Twenty one male Wistar albino rats were used in this study. In each animal, bone defects (6 mm length ) were created in the tibias. The animals were divided into three groups. In group 1 control group (rats which tibial defects). Group 2 melatonin (10 mg/kg) + 14 days in the tibial defect group) was administered intraperitoneally to rats. Group 3 melatonin (10 mg/kg) + 28 days in the tibial defect group) was administered intraperitoneally to rats. Histopathological analysis of samples was performed to evaluate the process of osteoblastic activity, matrix formation, trabecular bone formation and myeloid tissue in bone defects. Immunohistochemical and immunoblot analysis demonstrated non-collagenous proteins (osteopontin and osteonectin) differences in tibial bone defects. The expression of osteopontin on tibia was increased by 14 days melatonin treatment. The expression of osteonectin on tibia was dramatically increased by 14 days melatonin treatment.

Palabras clave : Tibial defects; Melatonin; Osteonectin; Osteopontin.

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