REMODELING OF THE BONE TISSUE OF RATS OF DIFFERENT LINES AFTER MELATONIN EFFECT
Abstract
The markers of remodeling of bone tissue (BT) were studied after the impact of pharmacologic dose of melatonin (5 mg/kg of the animal body weight) during 28 days for 3-months rats-males of Wistar and SHR lines. The studies were carried out in autumn.
The aim of our work was to study the indices of bone tissue remodeling of rats of Wistar and SHR lines after introduction of pharmacologic dose of exogenous melatonin.
Biochemical and immune-enzyme methods of analysis were used in the study. In rats of Wistar line was revealed a reliable increase of activity of alkaline phosphatase (ALP) by 43,9% (Р<0,05), hyaluronidase activity (HA) by 15,4% and free thyroxin concentration (fТ4) by 30%. There was also registered the decrease of pyridinoline (PYD) concentration by 48% and glycosaminoglycan (GAG) by 46,7%. In rats of SHR line under the same conditions the results essentially differed. The activity of acid phosphatase (ACP) has a tendency to increase by 11,6%, and PYD concentration decreased by 25%. The concentrations of free triiodothyronine (fТ3) and fТ4 reliably increased by 51,3% and 31,1% respectively.
In the result of research we revealed that melatonin plays the main role among several main factors of regulation of bone tissue remodeling. It has stimulating influence on bone tissue and hormones of thyroid gland.Downloads
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