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Tobacco Enhances Bacterial-Induced Periodontal Bone Loss In Mice., Mina Iskander May 2020

Tobacco Enhances Bacterial-Induced Periodontal Bone Loss In Mice., Mina Iskander

Electronic Theses and Dissertations

Background: Tobacco smoking is the leading environmental risk factor for periodontal diseases. Delineation of the mechanisms underlying tobacco-induced or exacerbated periodontitis is hampered by the lack of an appropriate and reliable animal model. Hypothesis: We hypothesized that Porphyromonas-gingivalis-infected, cigarette smoke-exposed mice would represent reproducible models of acute (ligature model) and chronic (oral gavage model) tobacco-enhanced periodontitis that reflect multiple aspects of the disease noted in human smokers. Methods: In a chronic oral gavage disease model, Balb/c mice (6-8 weeks, 4 groups of n = 6 per group) were exposed to smoke produced by a Teague-10 smoking machine from 1R6F research …


Tobacco Smoke Exposures And Fertility-Related Outcomes Among Females Seeking Fertility Care, And The Interaction With N-Acetyltransferase 2 (Nat2).., T'Shura S. A. Ali May 2020

Tobacco Smoke Exposures And Fertility-Related Outcomes Among Females Seeking Fertility Care, And The Interaction With N-Acetyltransferase 2 (Nat2).., T'Shura S. A. Ali

Electronic Theses and Dissertations

Cigarette smoke contains thousands of harmful substances and is one of the leading preventable causes of mortality and morbidity in the United States. Past studies examining tobacco smoke exposures on fecundability and pregnancy outcomes are inconsistent. NAT2 is an important enzyme in the metabolism of xenobiotic substances found within tobacco smoke. This preconception cohort study examines associations between active smoking and secondhand smoke exposure (SHSe) on fecundability and spontaneous abortion (SA), and explores a possible interaction with NAT2 acetylator status. A total of 223 women seeking fertility care were followed for up to 2.3 years. Preconception tobacco smoke exposures were …