Date on Master's Thesis/Doctoral Dissertation

12-2018

Document Type

Doctoral Dissertation

Degree Name

Ph. D.

Department

Epidemiology and Population Health

Degree Program

Public Health Sciences with a specialization in Epidemiology, PhD

Committee Chair

Taylor, Kira

Committee Co-Chair (if applicable)

Baumgartner, Kathy

Committee Member

Baumgartner, Kathy

Committee Member

Hein, David

Committee Member

Wallis, Anne

Committee Member

Gunaratnam, Bakeerathan

Author's Keywords

infertility; ovarian reserve; anti-müllerian hormone (AMH); smoking; NAT2

Abstract

Cigarette smoking in women has been associated with adverse reproductive outcomes such as reduced ovarian reserve, poorer in vitro fertilization (IVF) outcomes and increased adverse pregnancy outcomes. This study examined the association of smoking with ovarian reserve in a cross-sectional study of women seeking fertility treatment, and potential effect modification by race and NAT2 acetylator phenotype. Data from 265 women from the Louisville Tobacco Smoke, Genetic Susceptibility, and Infertility (LOUSSI) Study were analyzed. A total of 265 women were recruited through a single infertility clinic between September 2016 and June 2018. Information on current smoking status was assessed using a structured questionnaire and confirmed by cotinine assay. Single nucleotide polymorphisms in NAT2 were genotyped to determine acetylator status and serum anti-Müllerian hormone (AMH) level was used to assess ovarian reserve. The association of smoking with ovarian reserve was assessed using linear and logistic regression models with adjustment for potential confounders. Effect modification by race and NAT2 phenotype were assessed by including interaction terms in the regression models. Overall, smoking was not significantly associated with ovarian reserve. Results suggest that heavy smoking and higher pack-years of exposure may decrease ovarian reserve. Although most associations were not statistically significant, the effect of smoking on ovarian reserve was more pronounced among non-Hispanic Black women and slow NAT2 acetylators. These results are based on a small clinical population and require replication in a larger and more representative study population.

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