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  • Küçük Resim
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    Experimental investigation of relationship between trauma and bisphosphonate-related osteonecrosis
    (MEDKNOW PUBLICATIONS & MEDIA PVT LTD, B-9, KANARA BUSINESS CENTRE, OFF LINK RD, GHAKTOPAR-E, MUMBAI, 400075, INDIA, 2014) Ağaçayak, K. S.; Yüksel, H.; Atılgan, S.; Koparal, M.; Uçan, M. C.; Özgöz, M.; Yaman, F.; Atalay, Y.; Acıkan, I.
    Background: Bisphosphonate (BP)-related osteonecrosis of the jaw (BRONJ) disease is rare, but there are serious side-effects of BP therapy in patients. In some patients, surgery is needed and could not be cured. A standard test is not available showing the risk of jaw osteonecrosis in routine use. The measurement of serum C-terminal telopeptide (CTX) levels has been used in diseases of BRONJ resorption and antiresorptive therapy. Aim: This paper is aimed at investigating the relationship between traumatic procedures and presence of BP-related osteonecrosis. Materials and Methods: Thirty male Wistar albino rats with weighing 200 +/- 20 g were used for the experimental procedures. Rats were randomly divided into three groups each containing 10 rats as follows: Group 1 (traumatic extraction group), Group 2 (atraumatic extraction group), and Group 3 (control group). All groups, zoledronic acid (ZA) (0.3 mg/kg/week)([1]) was diluted with physiological saline and given subcutaneously for 2 months. After the 2 months, Group 1 was subjected to traumatic extraction of right first lower molars, and Group 2 was subjected to atraumatic extractions of the right first lower molars. Group 3 was subjected to no extractions as a control group. Animals were euthanized 32 days after tooth extractions, and the ZA administration protocol was maintained until the animals' death. After sacrifice, blood samples were collected for C-terminal cross-linking telopeptide of type I collagen (CTX-1) levels, clinical and radiological findings were recorded. Results: The bone resorption marker CTX-1 showed a significant difference among the groups. CTX-1 was measured significantly higher in blood samples of Group 2 (4.15 +/- 0.34; P = 0.001) than Group 1 (3.77 +/- 0.34; P = 0.0001). No, statistically significant changes were found between Groups 1 and 2 as for clinical and radiological assessment. Conclusion: This study provides preliminary observations for the development of an animal model of BRONJ. Although clinical and radiological findings were not relevant, serum CTX values are reliable biochemical markers for predicting BRONJ and also atraumatic surgical procedures are important to prevent BRONJ.
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    Protective effect of montelukast sodium in acute ethyl alcohol-induced hepatic injury in rats
    (Univ West Indies Faculty Medical Sciences, 2021) Zengin, Y.; İçer, M.; Gündüz, E.; Dursun, R.; Türkçü, G.; Yüksel, H.; Özhasenekler, A.; Orak, M.; Güloğlu, C.
    Objective: Ethyl alcohol (EA) is a substance that is used commonly worldwide and known to have toxic effects on the liver The aim of this study was to investigate the effect of montelukast sodium (MK) on acute hepatopathy induced by a single dose of EA in rats. Methods: The study consisted of four groups each containing eight Wistar albino male rats. The groups were classified as follows: the control group received distilled water; the EA group received 6 g/kg EA diluted with distilled water orally by gavage; the MK group received 30 mg/ kg MK orally by gavage; the EA + MK group received, 2 hours after the EA administration, ie 30 mg/kg MK orally by gavage. After 24 hours, all the rats were sacrificed, and their blood and liver tissue samples were taken for biochemical and histopathological examinations. Results: The administration of EA caused a statistically significant increase in aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels compared with the control group (220.50 +/- 66.90 and 92.38 +/- 5.90 versus 84.88 +/- 15.66 and 43.75 +/- 10.22). The administration of EA + MK caused a statistically significant decrease in the AST and ALT levels compared with the EA alone group. Ethyl alcohol administered to the rats caused lesion in the liver including congestions, hydropic degeneration and irregular shaped area caused coagulation necrosis. The histopathological changes seen in the EA group were not detected in the EA + MK group. Conclusion: Consequently, these data suggested that MK had beneficial effects in alleviating EA-induced hepatotoxicity in rats.