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Cigarette Smoking and Opium Use in Relation to the Oral Microbiota in Iran Publisher Pubmed



Wu Z1 ; Han Y2 ; Caporaso JG3 ; Bokulich N3 ; Mohamadkhani A4 ; Moayyedkazemi A5, 6 ; Hua X2 ; Kamangar F7 ; Wan Y2 ; Suman S8, 9 ; Zhu B8, 9 ; Hutchinson A8, 9 ; Dagnall C8, 9 ; Jones K8, 9 Show All Authors
Authors
  1. Wu Z1
  2. Han Y2
  3. Caporaso JG3
  4. Bokulich N3
  5. Mohamadkhani A4
  6. Moayyedkazemi A5, 6
  7. Hua X2
  8. Kamangar F7
  9. Wan Y2
  10. Suman S8, 9
  11. Zhu B8, 9
  12. Hutchinson A8, 9
  13. Dagnall C8, 9
  14. Jones K8, 9
  15. Hicks B8, 9
  16. Shi J2
  17. Malekzadeh R4, 10
  18. Abnet CC1
  19. Pourshams A4, 6
  20. Vogtmann E1
Show Affiliations
Authors Affiliations
  1. 1. Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, United States
  2. 2. Biostatistics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, United States
  3. 3. Center for Applied Microbiome Science, Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States
  4. 4. Digestive Oncology Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
  5. 5. Department of Internal Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran
  6. 6. Liver and Pancreatobiliary Diseases Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
  7. 7. Department of Biology, School of Computer, Mathematical, and Natural Sciences, Morgan State University, Baltimore, MD, United States
  8. 8. Cancer Genomics Research Laboratory, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, United States
  9. 9. Leidos Biomedical Research Laboratory, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD, United States
  10. 10. Digestive Disease Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran

Source: Microbiology Spectrum Published:2021


Abstract

Cigarettes and opium contain chemicals and particulate matter that may modify the oral microbiota. This study aimed to investigate the association between cigarette and opium use with the oral microbiota. A total of 558 participants were recruited from Iran between 2011 and 2015. Individuals were categorized as never cigarette nor opium users, ever cigarette-only smokers, ever opium-only users, and ever both cigarette and opium users. Participants provided saliva samples for 16S rRNA gene sequencing. Logistic regression, microbiome regression-based kernel association test (MiRKAT), and zero-inflated beta regression models were calculated. For every increase in 10 observed amplicon sequence variants (ASVs), the odds for being a cigarette-only smoker, opium-only user, and both user compared to never users decreased by 9% (odds ratio [OR] = 0.91; 95% confidence interval [95% CI] = 0.86 to 0.97), 13% (OR = 0.87; 95% CI = 0.75 to 1.01), and 12% (OR = 0.88; 95% CI = 0.80 to 0.96), respectively. The microbial communities differed by cigarette and opium use as indicated by MiRKAT models testing the three beta-diversity matrices (P, 0.05 for all). Three genera were less likely and one genus was more likely to be detected in cigarette-only smokers or opium-only users than in never users. The relative abundance of the phylum Actinobacteria (never, 14.78%; both, 21.20%) was higher and the phyla Bacteroidetes (never, 17.63%; both, 11.62%) and Proteobacteria (never, 9.06%; both, 3.70%) were lower in users of both cigarettes and opium, while the phylum Firmicutes (never, 54.29%; opium, 65.49%) was higher in opium-only users. Cigarette and opium use was associated with lower alpha-diversity, overall oral microbiota community composition, and both the presence and relative abundance of multiple taxa. © 2021 American Society for Microbiology. All rights reserved.