Assessment of the antibacterial activity of macroalgae Cladophora crispata extract against extended spectrum beta-lactamase producing Escherichia coli isolated from diarrheic children
Abstract
Background: Diarrhea is a major cause of morbidity and mortality in children under 5 years old in developing countries.Objective: This study designed to investigate the occurrence of extended spectrum beta-lactamase producing Escherichia coli (E. coli ) as etiological infectious agents of diarrhea in children, assessment of their susceptibility/resistance to antibiotics, and to evaluate the antibacterial activity of the macroalgae Cladophora crispata extract towards these bacteria .Materials and Methods: 150 diarrheic stool samples were collected from children less than 5 years and cultured. The isolated bacteria were subjected to various identification and biochemical tests. Then all the isolated bacteria (E. coli ) were subjected to ESBL-producing screening by double-disc synergy test, the antibacterial activity of algal extract and antibiotic susceptibility test against tested bacteria were determined by using agar well diffusion and disc diffusion methods respectively . Results: Out of total 150 samples, only 18 isolates revealed the presence of extended spectrum β-lactamase producing E. coli, which showed highly susceptibility to gentamicin and amikacin, Cladophora crispata extract revealed a strong antibacterial activity against ESBL-producing E. coli. Conclusion: Cladophora crispata extract showed a strong antibacterial activity against ESBL-producing E. coli which can be exploited as source of antibacterial drugs to control and treatment diarrheal infection caused by these bacteria.
Keywords
Antibiotic susceptibility, antibacterial activity, Cladophora crispata, algae, children diarrhea, Escherichia coli, extended-spectrum beta-lactamase.Metrics