Microbiomic differences at cancer-prone oral mucosa sites with marijuana usage.
Sci Rep
; 9(1): 12697, 2019 09 03.
Article
in En
| MEDLINE
| ID: mdl-31481657
Marijuana smoke contains cannabinoids, immunosuppressants, and a mixture of potentially-mutagenic chemicals. In addition to systemic disease, it is thought to contribute to oral disease, such as tooth loss, tissue changes in the gums and throat, and possibly oral pharyngeal cancer. We used a cross-sectional study of 20 marijuana users and 19 control non-users, to determine if chronic inhalation-based exposure to marijuana was associated with a distinct oral microbiota at the two most common sites of head and neck squamous cell carcinoma (HNSCC), the lateral border of the tongue and the oral pharynx. At the tongue site, genera earlier shown to be enriched on HNSCC mucosa, Capnocytophaga, Fusobacterium, and Porphyromonas, were at low levels in marijuana users, while Rothia, which is found at depressed levels on HNSCC mucosa, was high. At the oral pharynx site, differences in bacteria were distinct, with higher levels of Selenomonas and lower levels of Streptococcus which is what is seen in HNSCC. No evidence was seen for a contribution of marijuana product contaminating bacteria to these differences. This study revealed differences in the surface oral mucosal microbiota with frequent smoking of marijuana.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Bacteria
/
Mouth Neoplasms
/
Marijuana Smoking
/
Pharyngeal Neoplasms
/
Microbiota
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Squamous Cell Carcinoma of Head and Neck
/
Mouth Mucosa
Type of study:
Observational_studies
/
Risk_factors_studies
Limits:
Adolescent
/
Adult
/
Female
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Humans
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Male
/
Middle aged
Language:
En
Journal:
Sci Rep
Year:
2019
Document type:
Article
Affiliation country:
Country of publication: