L Forms for Haemophilus parainfluenzae and Haemophilus aphrophilus Isolated From Patients with Upper Respiratory Tract Infections in Mosul City

Ibrahim Sulaiman Nadir, Aws

	L Forms for Haemophilus parainfluenzae and Haemophilus aphrophilus Isolated From Patients with Upper Respiratory Tract Infections in Mosul City
Tikrit Journal of Pure Science
Article 1, Volume 13, Issue 2, 2008, Pages 169-173
Author
Aws Ibrahim Sulaiman Nadir
Abstract
Two hundred samples were collected from naso-pharyngeal area and oro-pharyngeal areas from patients admitted to AL-Salam General Hospital and AL-Khansaa Teaching Hospital delivary at Mosul city from January 2003 till April 2004. Their ages ranged between 4>40 years for both sexes. To study the effect of this antibiotic on the formation of the L-shape for the microorganism under study, the liquid medium (A) containing different concentration of Vancomycin and using the bacterial suspension containing 105 cfu/ml and the result showed that the MIC for H. parainfluenzae was 1.2g/ml and for H. aphrophilus was 0.6g/ml, L-shapes were seen in these concentrations while when the liquid medium (B) used the bacterial concentration of 107 cfu/ml, the MIC was 1.2g/ml and 0.6g/ml for H. parainfluenzae and H. aphrophilus ,respectively L-forms also seen in these concentrations. When the solid media (A) and (B) were inoculated with 10-7in the presence of Vancomycin , L-shape were seen in the inhibition zone round the antibiotic in a low concentration on the solid medium (A) for H. parainfluenzae, while these shapes were absent using the solid medium (B) for this bacteria in using both concentrations 10-1 and 10-7, and it is absent for H. aphrophilus using the two solid media and the two concentrations.
Keywords
Haemophilus aphrophilus; Haemophilus parainfluenzae; Forms

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