Abstract
Epidemiological and experimental observations have shown that nonsteroidal anti-inflammatory drugs especially selective cyclooxygenase-2 (COX-2) inhibitors and probiotics reduce the incidence risk of colon cancer. Therefore, the present study was designed to assess the prophylactic potentials of probiotics (Lactobacillus acidophilus and Lactobacillus rhamnosus GG) in conjunction with celecoxib, a selective cox-2 inhibitor in 1,2 dimethylhydrazine dihydrochloride (DMH)-induced experimental colon carcinogenesis, a well-established, well appreciated and widely used model for colorectal cancer that shares many similarities to human sporadic colorectal cancer with respect to response to some promotional and preventive agents. More specifically, it was observed that L. rhamnosus GG + celecoxib + DMH-treated animals had significantly reduced aberrant crypt foci (ACF) count and the expression of procarcinogenic molecular markers (β-catenin, NF-κB, and COX-2) in early experimental colon carcinogenesis compared with probiotic-DMH, celecoxib-DMH or DMH-treated animals. This is the first ever such study to demonstrate that probiotic in conjunction with celecoxib can be opted as an alternate prophylactic strategy in highly susceptible individuals to reduce both the incidence and severity of the life style diseases as prevention is better than cure.
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