Role of matrix metalloproteinases and tissue inhibitor of matrix metalloproteinases-1 in Crimean-Congo hemorrhagic fever disease
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AIM: Crimean-Congo hemorrhagic fever is a potentially fatal viral disease in humans caused by CCHF virus. We aimed to demonstrate change in serum levels of matrix metallopeinase/tissue matrix metalloproteinase inhibitor (MMP/TIMP) associated with CCHF. PATIENTS AND METHODS: Blood specimens were collected in acute and convalescence periods from the patients presented to Cumhuriyet University Hospital, Department of Emergency and Infection Diseases with presumed as CCHF between May 2010 and September 2010. Forty-one age and gender matched healthy individuals had not any viral, bacterial, acute or chronic disease were enrolled as the controls. Blood specimens were centrifuged at 4000 rpm for 5 min with in "Hettich universal 32" centrifuge. Serum samples obtained were kept at -80 degrees C. All the specimens were brought to room temperature during the study and MMP-1, 2, 7, 9, 10 and TIMP-1 tests were studied at one time using "RayBiotech" brand kit in "Grifols" brand "Triturus" model ELISA device. Acute, convalescence and control groups were compared in terms of the serum levels of MMP-1, 2, 7, 9, 10 and TIMP-1. RESULTS: There was a statistically significant increase in serum levels of MMP-1, 7, 9, 10 and TIMP-1 in the convalescence period (p < 0.05) compared to the controls, while the increase in levels of MMP-2 was not statistically significant (p > 0.05). In acute period of CCHF, mean TIMP-1 levels of severe patients was significantly lower than that of the non-severe patients (207913 +/- 31051 versus 231300 +/- 13267, respectively, p = 0.023). CONCLUSIONS: High serum levels of MMP and TIMP in CCHF disease were found to decrease as progressed to convalescence from the acute period. It is thought MMP and TIMP plays a significant role in pathogenesis of CCHF.