World Health Organization. WHO report on the global tobacco epidemic: Offer help to quit tobacco use, vol. 2019. Geneva: World Health Organization. Available from: https://www.who.int/tobacco/global_report/en//; 2019.
Google Scholar
IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, International Agency for Research on Cancer. Smokeless tobacco and some tobacco-specific N-nitrosamines. In: A review of human carcinogens: Personal habits and indoor combustions, Volume 100 E, vol. E100. Lyon: World Health Organization; distributed by WHO Press; 2012. p. 267–321.
Google Scholar
Petti S, Masood M, Scully C. The magnitude of tobacco smoking-betel quid chewing-alcohol drinking interaction effect on oral cancer in South-East Asia. A meta-analysis of observational studies. PLoS One. 2013;8(11):e78999.
Article
Google Scholar
Khan Z, Tonnies J, Muller S. Smokeless tobacco and oral cancer in South Asia: a systematic review with meta-analysis. J Cancer Epidemiol. 2014;2014:394696.
Article
Google Scholar
Tomar SL, Hecht SS, Jaspers I, Gregory RL, Stepanov I. Oral health effects of combusted and smokeless tobacco products. Adv Dent Res. 2019;30(1):4–10.
Article
CAS
Google Scholar
Jiang X, Wu J, Wang J, Huang R. Tobacco and oral squamous cell carcinoma: a review of carcinogenic pathways. Tob Induc Dis. 2019;17:29.
CAS
PubMed
PubMed Central
Google Scholar
Al-Hebshi NN, Borgnakke WS, Johnson NW. The microbiome of Oral squamous cell carcinomas: a functional perspective. Curr Oral Health Rep. 2019;6:145–60.
Article
Google Scholar
Perera M, Al-Hebshi NN, Speicher DJ, Perera I, Johnson NW. Emerging role of bacteria in oral carcinogenesis: a review with special reference to perio-pathogenic bacteria. J Oral Microbiol. 2016;8:32762.
Article
Google Scholar
Wu J, Peters BA, Dominianni C, Zhang Y, Pei Z, Yang L, Ma Y, Purdue MP, Jacobs EJ, Gapstur SM, et al. Cigarette smoking and the oral microbiome in a large study of American adults. ISME J. 2016;10(10):2435–46.
Article
CAS
Google Scholar
Yang Y, Zheng W, Cai QY, Shrubsole MJ, Pei Z, Brucker R, Steinwandel MD, Bordenstein SR, Li Z, Blot WJ, et al. Cigarette smoking and oral microbiota in low-income and African-American populations. J Epidemiol Commun Health. 2019;73(12):1108–15.
Article
Google Scholar
Jin J, Guo L, VonTungeln L, Vanlandingham M, Cerniglia CE, Chen H. Smokeless tobacco impacts oral microbiota in a Syrian Golden hamster cheek pouch carcinogenesis model. Anaerobe. 2018;52:29–42.
Article
CAS
Google Scholar
Patil S, Alamir AWH, Arakeri G, Awan KH, Bhandi SH, Aljabab A, Maddur N, Gomez RS, Brennan PA. The relationship of shammah (Arabian snuff) chewing to the risk of oral cancer and oral potentially malignant disorders. J Oral Pathol Med. 2019;48(6):425–32.
Article
Google Scholar
Quadri MFA, Tadakamadla SK, John T. Smokeless tobacco and oral cancer in the Middle East and North Africa: a systematic review and meta-analysis. Tob Induc Dis. 2019;17:56.
Article
Google Scholar
Ren W, Xun Z, Wang Z, Zhang Q, Liu X, Zheng H, Zhang Q, Zhang Y, Zhang L, Wu C, et al. Tongue coating and the salivary microbial communities vary in children with halitosis. Sci Rep. 2016;6:24481.
Article
CAS
Google Scholar
Nasher AT, Al-Hebshi NN, Al-Moayad EE, Suleiman AM. Viral infection and oral habits as risk factors for oral squamous cell carcinoma in Yemen: a case-control study. Oral Surg Oral Med Oral Pathol Oral Radiol. 2014;118(5):566–572 e561.
Article
Google Scholar
Parks DH, Tyson GW, Hugenholtz P, Beiko RG. STAMP: statistical analysis of taxonomic and functional profiles. Bioinformatics. 2014;30(21):3123–4.
Article
CAS
Google Scholar
Amer A, Galvin S, Healy CM, Moran GP. The microbiome of potentially malignant Oral leukoplakia exhibits enrichment for Fusobacterium, Leptotrichia, campylobacter, and Rothia species. Front Microbiol. 2017;8:2391.
Article
Google Scholar
Abdrazak A, Aine W, Al-Hebshi NN, Healy CM, Moran GP. Acetaldehyde production by Rothia mucilaginosa isolates from patients with oral leukoplakia. J Oral Microbiol. 2020;12:1743066 Accepted Manuscript.
Article
Google Scholar
Homann N. Alcohol and upper gastrointestinal tract cancer: the role of local acetaldehyde production. Addict Biol. 2001;6(4):309–23.
Article
CAS
Google Scholar
Meurman JH. Oral microbiota and cancer. J Oral Microbiol. 2010;2:5195 https://doi.org/10.3402/jom.v2i0.5195.
Perera M, Al-Hebshi NN, Perera I, Ipe D, Ulett GC, Speicher DJ, Chen T, Johnson NW. Inflammatory Bacteriome and Oral squamous cell carcinoma. J Dent Res. 2018;97(6):725–32.
Article
CAS
Google Scholar
Al-Hebshi NN, Nasher AT, Maryoud MY, Homeida HE, Chen T, Idris AM, Johnson NW. Inflammatory bacteriome featuring Fusobacterium nucleatum and Pseudomonas aeruginosa identified in association with oral squamous cell carcinoma. Sci Rep. 2017;7(1):1834.
Article
Google Scholar
Kurkivuori J, Salaspuro V, Kaihovaara P, Kari K, Rautemaa R, Gronroos L, Meurman JH, Salaspuro M. Acetaldehyde production from ethanol by oral streptococci. Oral Oncol. 2007;43(2):181–6.
Article
CAS
Google Scholar
Pavlova SI, Jin L, Gasparovich SR, Tao L. Multiple alcohol dehydrogenases but no functional acetaldehyde dehydrogenase causing excessive acetaldehyde production from ethanol by oral streptococci. Microbiology. 2013;159(Pt 7):1437–46.
Article
CAS
Google Scholar
Hashibe M, Brennan P, Chuang SC, Boccia S, Castellsague X, Chen C, Curado MP, Dal Maso L, Daudt AW, Fabianova E, et al. Interaction between tobacco and alcohol use and the risk of head and neck cancer: pooled analysis in the international head and neck Cancer epidemiology consortium. Cancer Epidemiol Biomark Prev. 2009;18(2):541–50.
Article
CAS
Google Scholar
Lee WH, Chen HM, Yang SF, Liang C, Peng CY, Lin FM, Tsai LL, Wu BC, Hsin CH, Chuang CY, et al. Bacterial alterations in salivary microbiota and their association in oral cancer. Sci Rep. 2017;7(1):16540.
Article
Google Scholar
Zhao H, Chu M, Huang Z, Yang X, Ran S, Hu B, Zhang C, Liang J. Variations in oral microbiota associated with oral cancer. Sci Rep. 2017;7(1):11773.
Article
Google Scholar
Ai D, Pan H, Li X, Gao Y, Liu G, Xia LC. Identifying gut microbiota associated with colorectal Cancer using a zero-inflated lognormal model. Front Microbiol. 2019;10:826.
Article
Google Scholar
Sato N, Kakuta M, Uchino E, Hasegawa T, Kojima R, Kobayashi W, Sawada K, Tamura Y, Tokuda I, Imoto S, et al. The relationship between cigarette smoking and the tongue microbiome in an east Asian population. J Oral Microbiol. 2020;12(1):1742527.
Article
Google Scholar
Sato N, Kakuta M, Hasegawa T, Yamaguchi R, Uchino E, Kobayashi W, Sawada K, Tamura Y, Tokuda I, Murashita K, et al. Metagenomic analysis of bacterial species in tongue microbiome of current and never smokers. NPJ Biofilms Microbiomes. 2020;6(1):11.
Article
Google Scholar
Karabudak S, Ari O, Durmaz B, Dal T, Basyigit T, Kalcioglu MT, Durmaz R. Analysis of the effect of smoking on the buccal microbiome using next-generation sequencing technology. J Med Microbiol. 2019;68(8):1148–58.
Article
CAS
Google Scholar
Trombelli L, Farina R, Silva CO, Tatakis DN. Plaque-induced gingivitis: case definition and diagnostic considerations. J Periodontol. 2018;89(Suppl 1):S46–73.
Article
Google Scholar
Papapanou PN, Sanz M, Buduneli N, Dietrich T, Feres M, Fine DH, Flemmig TF, Garcia R, Giannobile WV, Graziani F, et al. Periodontitis: Consensus report of workgroup 2 of the 2017 World workshop on the classification of periodontal and Peri-implant diseases and conditions. J Periodontol. 2018;89(Suppl 1):S173–82.
Article
Google Scholar
Al-Hebshi NN, Alharbi FA, Mahri M, Chen T. Differences in the bacteriome of smokeless tobacco products with different oral carcinogenicity: compositional and predicted functional analysis. Genes. 2017;8:106 in press.
Article
Google Scholar
Frank JA, Reich CI, Sharma S, Weisbaum JS, Wilson BA, Olsen GJ. Critical evaluation of two primers commonly used for amplification of bacterial 16S rRNA genes. Appl Environ Microbiol. 2008;74(8):2461–70.
Article
CAS
Google Scholar
Lane DJ, Pace B, Olsen GJ, Stahl DA, Sogin ML, Pace NR. Rapid determination of 16S ribosomal RNA sequences for phylogenetic analyses. Proc Natl Acad Sci U S A. 1985;82(20):6955–9.
Article
CAS
Google Scholar
Zhang J, Kobert K, Flouri T, Stamatakis A. PEAR: a fast and accurate Illumina paired-end reAd mergeR. Bioinformatics. 2014;30(5):614–20.
Article
CAS
Google Scholar
Schloss PD, Westcott SL, Ryabin T, Hall JR, Hartmann M, Hollister EB, Lesniewski RA, Oakley BB, Parks DH, Robinson CJ, et al. Introducing mothur: open-source, platform-independent, community-supported software for describing and comparing microbial communities. Appl Environ Microbiol. 2009;75(23):7537–41.
Article
CAS
Google Scholar
Al-Hebshi NN, Nasher AT, Idris AM, Chen T. Robust species taxonomy assignment algorithm for 16S rRNA NGS reads: application to oral carcinoma samples. J Oral Microbiol. 2015;7:28934.
Article
Google Scholar
Caporaso JG, Kuczynski J, Stombaugh J, Bittinger K, Bushman FD, Costello EK, Fierer N, Pena AG, Goodrich JK, Gordon JI, et al. QIIME allows analysis of high-throughput community sequencing data. Nat Methods. 2010;7(5):335–6.
Article
CAS
Google Scholar
Segata N, Izard J, Waldron L, Gevers D, Miropolsky L, Garrett WS, Huttenhower C. Metagenomic biomarker discovery and explanation. Genome Biol. 2011;12(6):R60.
Article
Google Scholar