Cystoscopy Clinical Trial
Official title:
IDENTIFICATION OF URINARY MICROBIOTE IN PATIENTS WITH DIAGNOSTIC-RELATED CYSTOSCOPY
Identify by culture the urinary microbiota of patients with bladder cancer (at the time of diagnosis) and controls.Identify by metagenomics the urinary microbiota of patients with bladder cancer (at the time of diagnosis) and controls.
Relationships between the human microbiota and various pathologies such as cancer have been
demonstrated. The microbiota would have an influence on the effectiveness of anticancer
treatments.
Bladder cancers are five times more common in men than women, and this difference in
incidence has long been explained by a higher smoking rate among men. However, the increase
in smoking among women has not led, as in the case of lung cancer, to a significant increase
in bladder cancer among them.
Urine bladder has long been considered "sterile" by generations of researchers. Recent
studies have shown that most urine is not sterile but instead contains a different microbiota
in both men and women. In women Actinobacteria, including Mycobacteria, and Bacteroidetes
have been detected.
BCG therapy is used in the treatment of bladder cancer. BCG, in addition to being a vaccine
to prevent tuberculosis, is a mycobacterium belonging to the phylum Actinobacteria [4].
Controversial studies have suggested the same potential for Lactobacillus casei.
Lactobacillii are Firmicutes found both in the urinary microbiota of men and women.
Thus microbiota composed mainly of Actinobacteria could be associated with a lower incidence
of bladder cancers in women.
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