Journal
CANCER RESEARCH COMMUNICATIONS
Volume 2, Issue 12, Pages 1558-1568Publisher
AMER ASSOC CANCER RESEARCH
DOI: 10.1158/2767-9764.CRC-22-0323
Keywords
-
Categories
Funding
- ACS CPS-II
- U.S. NCI [P20CA252728, R01CA159036, U01CA250186, N01-CO-12400]
- Intramural Research Program within the Division of Cancer Epidemiology and Genetics
- Division of Cancer Prevention, NCI, NIH
- NCI
- NIH
- DHHS
- American Cancer Society
- NCI Surveillance Epidemiology and End Results program
- Cancer Center Support Grant at the Laura and Isaac Perlmutter Cancer Center
Ask authors/readers for more resources
This study demonstrates that diets high in carbohydrates and glycemic index (GI) may influence the composition of the oral microbiome, with high carbohydrate intake associated with certain carcinogenic bacteria and decreased abundance of protective bacteria, and high GI intake associated with increased abundance of certain inflammation-related bacteria.
The human oral microbiome is associated with chronic diseases including cancer. However, our understanding of its relationship with diet is limited. We assessed the associations between carbohydrate and glycemic index (GI) with oral microbiome composition in 834 nondiabetic subjects from the NCI Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial and the American Cancer Society Cancer Prevention Study II cohorts. The oral microbiome was characterized using 16Sv3-4 rRNA sequencing from oral mouthwash samples. Daily carbohydrate and GI were assessed from food frequency questionnaires. We used linear regression, permutational multivariate ANOVA, and negative binomial Generalized Linear Models (GLM) to test associations of diet with & alpha;- and & beta;-diversity and taxon abun-dance (adjusting for age, sex, cohort, body mass index, smoking, caloric intake, and alcohol). A q-value (FDR-adjusted P value) of <0.05 was con-sidered significant. Oral bacterial & alpha;-diversity trended higher in participants in the highest quintiles of carbohydrate intake, with marginally increased richness and Shannon diversity (Ptrend = 0.06 and 0.07). Greater carbohy-drate intake was associated with greater abundance of class Fusobacteriia (q = 0.02) and genus Leptotrichia (q = 0.01) and with lesser abundance of an Actinomyces operational taxonomic unit (q = 4.7E-04). Higher GI was sig-nificantly related to greater abundance of genus Gemella (q = 0.001). This large, nationwide study provides evidence that diets high in carbohydrates and GI may influence the oral microbiome.Significance: Taxonomic differences at the highest intake quintiles may reflect diet-induced increases in carcinogenic bacteria and decreases in protective bacteria. Genus Leptotrichia has been implicated in can -cer and inflammatory disease, while immunostimulatory genus Gemella may increase inflammatory disease risk. These differences further our understanding of possible mechanisms leading to oral and systemic disease.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available