MYCOPLASMA AS CONTAMINANT OF CELL QULTURE WITH SPECIAL REFERENCE TO SOURCE OF INFECTION

Document Type : Original Article

Authors

Animal Health Research Inst. Doki Giza.

Abstract

Nine tissue cultures, 7 media for virus propagation and 5 lots of bovine sera as enrichment were brought to the Mycoplasma research department and routinely examined for contamination with Mycoplasma Four M. hominis were isolated from cell cultures, 3 M. salivarium were isolated from culture media while bovine serum samples revealed 3 bovine mycoplasmas isolates, 2 of them were M. arginini and one as A. Laidlawii.
Antibiotic sensitivity test for Mycoplasma isolates was applied against 8 antimicrobial agents using metabolic inhibition test (MIT) and growth inhibition test (GIT) and spectinomycin proved to be the most effective and was recommended for treatment of contaminated tissue cultures.
A trial was made to investigate the source of contamination. Out of 10 laboratory personnel 7 (.70%) Mycoplasma salivanum were isolated from throat samples while 6 (60%) were isolated when they were allowed to talk in front of plates held 2 inches from the mouth.

Main Subjects