Authors: RECAİ TUNCA, HİDAYET METİN ERDOĞAN, MAHMUT SÖZMEN, MEHMET ÇİTİL, ALPASLAN KADİR DEVRİM, SERPİL ERGİNSOY, ERDOĞAN UZLU
Abstract: White muscle disease (WMD) is a world-wide nutritional disease of all animal species characterised by degeneration of skeletal and cardiac muscles. In the present study we determined the cardiac troponin I (cTnI) and inducible nitric oxide synthase (iNOS) expression in hearts of the lambs with WMD (n = 15). Eight clinically healthy lambs served as control. Creatine kinase (CK), creatine kinase MB (CK-MB), aspartate aminotransferase (AST), and lactate dehydrogenase (LDH) activities were analysed for both groups. cTnI levels were measured by a commercially available ELISA kit. Mean cTnI (10.49 ± 0.25 ng/ml), CK (261.16 ± 38.61 U/l), CK-MB (214.16 ± 12.71 U/l), AST (125.83 ± 1.05), and LDH (228.77 ± 14.86 U/l) concentrations were higher in WMD cases. Immunohistochemistry revealed definitive loss of cTnI expression in all cases. None of the 8 controls showed loss of the cTnI expression. However, iNOS immunoreactivity was augmented in degenerated cardiac myocytes and macrophages infiltrating to the interstitium compared to controls. The results of the study suggested that cTnI antibody might successfully be used as a sensitive test in the diagnosis of myocardial injury. iNOS expression augments in cardiac myocytes in lambs with WMD, most likely through influencing the signalling pathways to iNOS induction.
Keywords: White muscle disease, lamb, immunohistochemistry, cTnI, iNOS
Full Text: PDF