Antibiotic and Antifungi activity of B. cepacia originating of nosocomial environmental. Independent Service University Hospital “Antonio Patricio Alcalá”. Cumaná, Venezuela

Abstract

Burkholderia cepacia is a Gram-negative and non-fermenter bacilli, known as a causal agent of opportunistic infections, as well as producer of compounds with antimicrobial activities. In the present study, the antagonism of nine (9) nosocomial isolates of B. cepacia against filamentous fungi, yeast and bacteria from hospital environments was evaluated. The antibacterial and antifungal detection was determined according to the double layer technique and cylindrical sections in agar, respectively. Four B. cepacia isolates (CVCM: 626, 1328, 1331 and 1332) inhibited the different bacterial species analyzed. B. cepacia CVCM 1332 inhibited five (5) of the six (6) indicators of bacterial species, with inhibition halos between 11 and 22 mm, with the exception of P. fluoresecens. Three (3) B. cepacia isolates did not show antibacterial activity. Two B. cepacia isolates inhibited the studied fungi (Fusarium solani, Penicillium citrinum, Penicillium frequentans, Aspergillus niger, Aspergillus ochoraceus, Penicillium echinulatum, Candida tropicalis, Candida famata). The species CVCM 626, 1328 and 1331 showed both antibacterial and antifungal activities. The antagonism of nosocomial B. cepacia isolates against bacteria and fungi from hospital environments was demonstrated, representing an important factor in the colonization of critical areas, facilitating the appearance of infectious symptoms in hospitalized patients.

Keywords

• burkholderia cepacia
• antibiótico
• antifúngico