Abstract
Objective To elucidate the correlation between Chinese patients with Crohn's disease (CD) and Mycobacterium avium subspecies paratuberculosis (MAP) infection.Methods The peripheral blood of 73 patients with CD (ileocolon type) and 40 healthy individuals was obtained.The monocyte layer was isolated for MAP culture.The growth of bacteria colony in the culture tube was observed every two weeks and totally for 16 weeks.By the end of culture,specific DNA of MAP (IS900) in the culture tube was detected by nested polymerase chain reaction.ANOVA was performed for measurement data analysis and chi square test was used for count data.Results After cultured for 16 weeks,no bacteria colony of MAP had been observed in 113 mycobacteral growth indicator tube (MGIT).No IS900 had been detected in the peripheral blood of all patients with CD and all healthy controls.Conclusion MAP is not correlated with the pathogenesis of CD (ileocolon type) in Chinese patients. Key words: Crohn disease; Mycobacterium avium subsp.paratuberculosis; Polymerase chain reaction
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