Grant Details
Grant Number: |
5U01ES026132-05 Interpret this number |
Primary Investigator: |
Martin, Marybeth |
Organization: |
Georgetown University |
Project Title: |
Impact of Environmental Metal/Metalloid Exposures on Mammographic Breast Density, a Marker of Breast Cancer |
Fiscal Year: |
2019 |
Abstract
DESCRIPTION (provided by applicant):Residents in medically underserved areas of Washington, DC have express the concern that the high incidence of cancer in their community is due to contaminants in their food and water, including metals. Results from our laboratory and others show that environmentally relevant amounts of specific metals and metalloids, referred to as metalloestrogens, activate estrogen receptor-alpha (ERα) in vitro and in vivo through a high affinity interaction with the ligand binding domain (LBD) of the receptor. These metals and metalloids fall into two separate subclasses, bivalent cations and oxyanions. New results from our laboratory suggest that metalloestrogens also activate progesterone receptor-B (PR-B). The ability to activate ERα, and potentially PR-B suggests that environmental exposure to metals and metalloids with estrogen- and progestin-like activity may increase the risk of developing breast cancer. In response to the concerns of the community, this application will address the question whether exposure to metals and metalloids increases the risk of developing breast cancer by testing the hypothesis that higher lifetime environmental exposure to metals and metalloids with estrogen- and progesterone-like activity is associated with higher mammographic density in women during the menopausal transition and delays or reduces the involution of mammary gland and the decline in mammographic breast density during this period. Aim 1 will determine whether metals and metalloids mimic the effects of estrogens and progestin on mammary gland morphology, stem and progenitor cells, and gene expression in a menopausal animal model (Aim 1a) and define the mechanisms by which metals and metalloids activate PR-B in in vitro assays (Aim 1b). Aim 2 will determine whether environmental exposure to metallohormones is associated with changes in breast density through the menopausal transition and define the mechanism by which metals and metalloids alter breast density. Specifically, Aim 2 will establish if: a, higher metallohormone levels are associated with increased mammographic density; b, higher metallohormone levels are associated with maintenance of higher breast density through the menopausal transition; and c, polymorphisms in the calcium pathway are associated with increased mammographic breast density indicating the mechanism through which bivalent cationic metallohormones increase risk. To accomplish these aims, we will continue to engage with our partners to get their input, to help collect data, and to translate and communicate the scientific findings to the community.
Publications
Cadmium activation of wild-type and constitutively active estrogen receptor alpha.
Authors: Psaltis J.B.
, Wang Q.
, Yan G.
, Gahtani R.
, Huang N.
, Haddad B.R.
, Martin M.B.
.
Source: Frontiers In Endocrinology, 2024; 15, p. 1380047.
EPub date: 2024-08-09 00:00:00.0.
PMID: 39184142
Related Citations
Calcium Activation of the Androgen Receptor in Prostate Cells.
Authors: Sharawi Z.W.
, Khatrawi S.M.
, Wang Q.
, Zhou H.
, Cyrus K.
, Yan G.
, Hoxter B.
, Haddad B.R.
, Martin M.B.
.
Source: International Journal Of Endocrinology, 2023; 2023, p. 9907948.
EPub date: 2023-12-13 00:00:00.0.
PMID: 38131032
Related Citations
The Impact of Mammography Screening Guideline Changes in a Universally Insured Population.
Authors: Bytnar J.A.
, Byrne C.
, Olsen C.
, Witkop C.
, Martin M.B.
, Banaag A.
, Koehlmoos T.
.
Source: Journal Of Women's Health (2002), 2021 12; 30(12), p. 1720-1728.
EPub date: 2021-02-17 00:00:00.0.
PMID: 33600239
Related Citations
Role of calcium in hormone-independent and -resistant breast cancer.
Authors: Cyrus K.
, Wang Q.
, Sharawi Z.
, Noguchi G.
, Kaushal M.
, Chang T.
, Rydzewski W.
, Yeguech W.
, Gibrel F.
, Psaltis J.B.
, et al.
.
Source: International Journal Of Cancer, 2021-07-21 00:00:00.0; , .
EPub date: 2021-07-21 00:00:00.0.
PMID: 34289100
Related Citations
The Impact of Mammography Screening Guideline Changes Among Women Serving in the U.S. Military.
Authors: Bytnar J.A.
, Byrne C.
, Olsen C.
, Witkop C.T.
, Martin M.B.
, Banaag A.
, Koehlmoos T.
.
Source: Military Medicine, 2020-12-30 00:00:00.0; 185(11-12), p. e2088-e2096.
PMID: 32803239
Related Citations
Arsenite and cadmium promote the development of mammary tumors.
Authors: Divekar S.D.
, Li H.H.
, Parodi D.A.
, Ghafouri T.B.
, Chen R.
, Cyrus K.
, Foxworth A.E.
, Fornace A.J.
, Byrne C.
, Martin M.B.
.
Source: Carcinogenesis, 2020-07-14 00:00:00.0; 41(7), p. 1005-1014.
PMID: 31646340
Related Citations
Serum concentrations of DDE, PCBs, and other persistent organic pollutants and mammographic breast density in Triana, Alabama, a highly exposed population.
Authors: Rusiecki J.A.
, Denic-Roberts H.
, Byrne C.
, Cash J.
, Raines C.F.
, Brinton L.A.
, Zahm S.H.
, Mason T.
, Bonner M.R.
, Blair A.
, et al.
.
Source: Environmental Research, 2020 Mar; 182, p. 109068.
EPub date: 2019-12-26 00:00:00.0.
PMID: 31918312
Related Citations
Environmental exposures during windows of susceptibility for breast cancer: a framework for prevention research.
Authors: Terry M.B.
, Michels K.B.
, Brody J.G.
, Byrne C.
, Chen S.
, Jerry D.J.
, Malecki K.M.C.
, Martin M.B.
, Miller R.L.
, Neuhausen S.L.
, et al.
.
Source: Breast Cancer Research : Bcr, 2019-08-20 00:00:00.0; 21(1), p. 96.
EPub date: 2019-08-20 00:00:00.0.
PMID: 31429809
Related Citations
Genetic variation in sensitivity to estrogens and breast cancer risk.
Authors: Jerry D.J.
, Shull J.D.
, Hadsell D.L.
, Rijnkels M.
, Dunphy K.A.
, Schneider S.S.
, Vandenberg L.N.
, Majhi P.D.
, Byrne C.
, Trentham-Dietz A.
.
Source: Mammalian Genome : Official Journal Of The International Mammalian Genome Society, 2018-02-27 00:00:00.0; , .
EPub date: 2018-02-27 00:00:00.0.
PMID: 29487996
Related Citations
Alteration of Mammary Gland Development and Gene Expression by In Utero Exposure to Cadmium.
Authors: Parodi D.A.
, Greenfield M.
, Evans C.
, Chichura A.
, Alpaugh A.
, Williams J.
, Cyrus K.C.
, Martin M.B.
.
Source: International Journal Of Molecular Sciences, 2017-09-09 00:00:00.0; 18(9), .
EPub date: 2017-09-09 00:00:00.0.
PMID: 28891935
Related Citations