Association between antibiotic consumption and colon and rectal cancer development in older individuals: A territory-wide study.
Cancer Med
; 11(20): 3863-3872, 2022 10.
Article
en En
| MEDLINE
| ID: mdl-35488387
ABSTRACT
BACKGROUND:
Antibiotics may alter colorectal cancer (CRC) risk due to gut dysbiosis. We aimed to study the specific and temporal effects of various antibiotics on CRC development in older individuals.METHODS:
This was a territory-wide retrospective cohort study. Subjects aged 60 years and older who did not have CRC diagnosed on screening/diagnostic colonoscopy diagnosed between 2005 and 2013 were recruited. Exclusion criteria were history of CRC, colectomy, inflammatory bowel disease, and CRC diagnosed within 6 months of index colonoscopy. Exposure was use of any antibiotics up to 5 years before colonoscopy. The primary outcomes were CRC diagnosed >6 m after colonoscopy. Covariates were patient demographics, history of colonic polyps/polypectomy, concomitant medication use (NSAIDs, COX-2 inhibitors, aspirin, and statins), and performance of endoscopy centers (colonoscopy volume and polypectomy rate). Stratified analysis was conducted according to nature of antibiotics and location of cancer.RESULTS:
Ninety seven thousand one hundred and sixty-two eligible subjects (with 1026 [1.0%] cases of CRC) were identified, 58,704 (60.4%) of whom were exposed to antibiotics before index colonoscopy. Use of antibiotics was associated with a lower risk of cancer in rectum (adjusted hazard ratio [aHR] 0.64, 95% CI 0.54-0.76), but a higher risk of cancer in proximal colon (aHR 1.63, 95%CI 1.15-2.32). These effects differed as regards the anti-anaerobic/anti-aerobic activity, narrow-/broad-spectrum, and administration route of antibiotics.CONCLUSIONS:
Antibiotics had divergent effects on CRC development in older subjects, which varied according to the location of cancer, antibiotic class, and administration route.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Neoplasias del Recto
/
Neoplasias Colorrectales
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Inhibidores de Hidroximetilglutaril-CoA Reductasas
Tipo de estudio:
Diagnostic_studies
/
Etiology_studies
/
Observational_studies
/
Prognostic_studies
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Risk_factors_studies
/
Screening_studies
Límite:
Aged
/
Humans
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Middle aged
Idioma:
En
Revista:
Cancer Med
Año:
2022
Tipo del documento:
Article
País de afiliación:
Hong Kong