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Infect Immun. 1986 May; 52(2): 631-632

Lack of immunoglobulin A1 protease production by Branhamella catarrhalis.

D T McLeod, M J Croughan, F Ahmad, R P Brettle and M A Calder

ABSTRACT

Clinical isolates of Branhamella catarrhalis from the sputum of 20 patients with acute bronchopulmonary infection were examined for synthesis of immunoglobulin A1 protease by immunoelectrophoresis. Ten strains produced beta-lactamase, and 10 were beta-lactamase negative. None of the strains demonstrated immunoglobulin A1 protease activity despite the fact that three different culture media were used.

Infect Immun. 1986 May; 52(2): 631-632






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