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Received date : 01-11-2021 Revised date : 09-12-2021 Accepted date : 16-12-2021 Published date : 31-12-2021

Mediterr J Pharm Pharm Sci 1 (4): 50-58, 2021

DOI: https://doi.org/10.5281/zenodo.5806118

Original Research


Association between Streptococcus bovis and colorectal cancer among Libyan patients

Salah Bashir, Attiya Alatery


Abstract

Streptococcus bovis/gallolyticus was considered as lower grade pathogen involved in endocarditis. Recent accumulating evidence has suggested that Streptococcus bovis/gallolyticus plays an important role in the initiation and development of colorectal cancer. This study was aimed to address the association between Streptococcus bovis/gallolyticus and colorectal cancer among Libyan patients, to determine the dominant biotype of Streptococcus bovis/gallolyticus associated with colorectal cancer patients and to evaluate the antibiotic susceptibly patterns of isolated strains. The study involved 20 colorectal cancer patients, 20 patients with large adenomas polyp and 20 people with healthy colonic mucosa as a control group. All the candidates were subjected to colonoscopy and histopathological examinations and conformation. The suspected and normal cases were then diagnosed according to the protocol used by the medicine specialist and grouped in accord with the study aim. All biopsies were handled and treated to isolate the suspected positive colonies of Streptococcus bovis/gallolyticus. Of the 20 colorectal cancer patients, seven patients (35%) were found to be Streptococcus bovis/gallolyticus carriers, (95% CI 1.22 - 1.72, p < 0.05). Nine patients (45%) were diagnosed colorectal cancer positive at age above 60 years old, eight patients (40%) at age 40 - 60 years old and three patients (15%) at age bellow 40 years old. Also, nine out of 20 patients (45%) with large adenomas polyp were found to be Streptococcus bovis/gallolyticus carriers, (95% CI 2.16 - 2.71, p < 0.05). Of the 20 healthy people with colonic mucosa, Streptococcus bovis/gallolyticus never been isolated. Streptococcus. bovis biotype II/I and Streptococcus. equinis were both susceptible to the above mentioned antibiotic classes, although Streptococcus bovis biotype I was highly resistance to most clinically used antibiotics. However, there was strong relationship between Streptococcus bovis/gallolyticus and colorectal cancer or large polyp formation. However, it is not well understood whether the bacterium has a pathogenic role in the initiation and progression of neoplasia or just an epiphenomenon of colorectal neoplasms.
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