Skip Navigation
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Your Environment. Your Health.


Export to Word (
Principal Investigator: Corbitt, Cynthia
Institute Receiving Award University Of Louisville
Location Louisville, KY
Grant Number R15ES028440
Funding Organization National Institute of Environmental Health Sciences
Award Funding Period 01 Aug 2017 to 31 May 2025
DESCRIPTION (provided by applicant): ABSTRACT An estimated 17% of women in Kentucky smoke during pregnancy. The studies proposed within this renewal application use a well-developed murine model of developmental exposure to tobacco smoke. We have shown effects of prenatal cigarette smoke exposure (CSE) on birth weight, catch-up growth, and gut bacterial microbiome in mouse dams and their offspring, as well as effects on offspring phenotype (preliminary data). However, we do not know if the observed changed in microbiome and offspring phenotype are linked. We will measure the effect of cecal transfer of microbiomes or dietary resistant starch on those same measures in this model. Our central hypothesis, that CSE-induced gut microbiome alterations are linked to offspring phenotype, will be tested within 2 aims: Aim 1: use cecal transfer in weanlings to separate effects of CSE-induced microbiome from CSE itself Aim 2: use dietary resistant starch to increase short-chain fatty acids before vs after puberty If our central hypothesis is supported, future studies will delve into gut-liver-brain axis consequences of intestinal dysbiosis, as well as investigate potential interventions. Drs. Corbitt (PI), Neal (co-I), and Kosiewicz (co-I) jointly will train students and conduct the proposed studies.
Science Code(s)/Area of Science(s) Primary: 68 - Microbiome
Secondary: -
Publications No publications associated with this grant
Program Officer Anika Dzierlenga
to Top