Annales de l'Institut Pasteur. Microbiologie · 1986
Urease activity in gastrointestinal tract of rabbit and electrophoretic behaviour of urease.
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Crociani F, Matteuzzi D, Minardi A, Brigidi P, Gioffré F
Аннотация
Urease activity in the stomach (fundus and antrum), caecal content and soft faeces of rabbit was studied. Significant differences between fundus and antral content (P less than 0.01) and between caecum and soft faeces (P less than 0.05) were observed. The urease zymograms from caecal content and soft faeces of rabbit presented two different bands. The fundus content and the caecal ureolytic Clostridium innocuum bacterium exhibited only one band. Band B of caecal content was not evident at pH 4, whereas band A, also present in the stomach, was observed both at pH 4 and at pH 6. The optimal pH of urease activity of stomach and caecal content was in the range of 4-5 and 5-6, respectively. A comparison of intestinal urease zymograms with those of the single ureolytic bacterial species was suggested in order to clarify their role in urea metabolism.