Latent Microsporidia Infection Prevalence as a Risk Factor in Colon Cancer Patients

Area of Science:

• * Parasitology and Oncology
• * Microbial pathogenesis and cancer etiology

Background:

• * Microsporidia are opportunistic intracellular parasites causing severe illness in immunocompromised individuals.
• * Microsporidial infections can interfere with apoptosis and cell cycle regulation via p53 and Caspase 3 inhibition, processes critical in epithelial cell malignancy.
• * The role of microsporidia in the etiopathogenesis of colon cancer (CC) remains largely unexplored.

Purpose of the Study:

• * To investigate the prevalence of microsporidia in intestinal tissues of colon cancer patients.
• * To assess the seroprevalence of anti-Encephalitozoon antibodies in colon cancer patients.
• * To explore the potential association between microsporidia and the development of colon cancer.

Main Methods:

• * Real-time PCR and immunofluorescence antibody testing were used to detect microsporidia in intestinal tissues.
• * Enzyme-linked immunosorbent assay (ELISA) was employed to analyze serum for anti-Encephalitozoon antibodies (IgG and IgE).
• * The study included 87 colon cancer patients and 25 healthy controls.

Main Results:

• * Microsporidia were detected in the tissues of 36 (41.3%) colon cancer patients, with no detection in controls (p < 0.0001).
• * Elevated levels of IgG and IgE anti-Encephalitozoon antibodies were observed in colon cancer patients, indicating prior or ongoing exposure.
• * A statistically significant association was found between microsporidia presence and colon cancer.

Conclusions:

• * The high prevalence of microsporidia in colon cancer tissues and elevated antibody levels suggest a significant association.
• * Microsporidia may play a role in the etiopathogenesis of colon cancer.
• * Further research is warranted to elucidate the precise mechanisms linking microsporidia to colon cancer development.