Project 1: Viewing Native American Cervical Cancer Disparities through the Lens of the Vaginal Microbiome

项目 1：通过阴道微生物组观察美洲原住民宫颈癌的差异

基本信息

批准号：
10021586
负责人：
James Gregory Caporaso
金额：
$ 8.21万
依托单位：
NORTHERN ARIZONA UNIVERSITY
依托单位国家：
美国
项目类别：
财政年份：
2009
资助国家：
美国
起止时间：
2009-09-29 至 2024-08-31
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/10021586
关键词：
Address Affect Alaska Native American Indians Arizona Biomedical Research Biometry Carcinoma Cervical Cervical Cancer Screening Cervical Intraepithelial Neoplasia Cervical dysplasia Cervix carcinoma Clinic Clinical Collaborations Communities Community Actions Constitution Data Development Disease Epithelial Epithelium Ethnic group Failure Female Future Genomics Genotype Goals HPV-High Risk Health Health behavior High Prevalence Hispanics Homeostasis Human Papilloma Virus Vaccination Human Papillomavirus Human papilloma virus infection Immune Immune response Incidence Infection Inflammation Inflammatory Interview Knowledge Lactobacillus Lead Lesion Link Malignant Neoplasms Malignant neoplasm of cervix uteri Mediating Mucositis Mucous Membrane Native Americans Nurse Practitioners Participant Pathogenesis Physician Executives Pilot Projects Play Population Predisposition Protocols documentation Questionnaires Race Recording of previous events Reporting Research Personnel Risk Role Safe Sex Sample Size Sampling Sexually Transmitted Diseases Shotguns Site Structure Students Swab Testing Time Training Underserved Population United States Indian Health Service Universities Vaccination Vagina Woman base cancer diagnosis cancer health disparity cancer invasiveness cancer prevention carcinogenesis design education research experience health care availability high risk lens metagenomic sequencing microbiome composition microbiota profiles microorganism mortality negative affect outreach premalignant racial and ethnic reproductive tract sample collection screening sociodemographic factors socioeconomics tumor progression vaginal microbiome vaginal microbiota

项目摘要

PROJECT SUMMARY/ABSTRACT: PROJECT 1 VIEWING NATIVE AMERICAN CERVICAL CANCER DISPARITIES THROUGH THE LENS OF THE VAGINAL MICROBIOME In the U.S., approximately 12,900 cases of cervical cancer are diagnosed each year, and annual mortality exceeds 4,000. According to Indian Health Service data from 1999-2009, American Indian/Alaskan Native (AI/AN) women had approximately a two-fold higher incidence of cervical cancer and associated mortality rate than white women. This cervical cancer disparity is primarily attributed to a lack of screening and unequal access to healthcare; however, other factors such as a higher prevalence of high-risk Human Papillomavirus (hrHPV) in AI/AN women are likely contributors as well. Certain compositions of the vaginal microbiota (VMB), the microorganisms that colonize the vagina, have recently been implicated in the development of cervical cancer, and have been observed to differ between white women and Hispanic women, where cervical cancer rate disparities have also been reported. The goal of this proposal is to address the role of the VMB and inflammation in cervical cancer pathogenesis in AI/AN women. The central hypothesis is that the VMB functions as a key regulator of mucosal inflammation in the female reproductive tract (FRT) that could affect the development of precancerous lesions and progression to invasive disease. To test this hypothesis two specific aims will be addressed in a small pilot project involving 100 AI/AN women and 100 non-AI/AN controls (50 healthy women and 50 women with cervical dysplasia in each group). It is anticipated that the results of this study will provide the framework and preliminary evidence to support a larger project. In Aim 1, a culturally sensitive vaginal sample collection protocol for AI/AN women will be developed and implemented in collaboration with the Native Americans for Community Action (NACA) clinic in Flagstaff, AZ. Subsequently, in Aim 2 correlations will be calculated among the vaginal microbiome composition, host immune activity, HPV genotypes, and Lactobacillus abundances in AI/AN women and non-AI/AN women to better understand the relationship between these factors and cervical dysplasia and to explore for the first time whether differences exist in the VMB of AI/AN and non-AI/AN women. Impact: This study will also provide the context for training AI/AN students at Northern Arizona University, University of Arizona, and Arizona State University in cutting edge biomedical research, and will be a step toward bringing genomics-based health advances to AI/AN communities.