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Bartkowiak-Wieczorek J, Jaros A, Gajdzińska A, Wojtyła-Buciora P, Szymański I, Szymaniak J, Janusz W, Walczak I, Jonaszka G, Bienert A. The Dual Faces of Oestrogen: The Impact of Exogenous Oestrogen on the Physiological and Pathophysiological Functions of Tissues and Organs. Int J Mol Sci 2024; 25:8167. [PMID: 39125736 PMCID: PMC11311417 DOI: 10.3390/ijms25158167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2024] [Revised: 07/18/2024] [Accepted: 07/25/2024] [Indexed: 08/12/2024] Open
Abstract
Oestrogen plays a crucial physiological role in both women and men. It regulates reproductive functions and maintains various non-reproductive tissues through its receptors, such as oestrogen receptor 1/oestrogen receptor α (ESR1/Erα), oestrogen receptor 2/oestrogen receptor β (ESR2/Erβ), and G protein-coupled oestrogen receptor 1 (GPER). This hormone is essential for the proper functioning of women's ovaries and uterus. Oestrogen supports testicular function and spermatogenesis in men and contributes to bone density, cardiovascular health, and metabolic processes in both sexes. Nuclear receptors Er-α and Er-β belong to the group of transcription activators that stimulate cell proliferation. In the environment, compounds similar in structure to the oestrogens compete with endogenous hormones for binding sites to receptors and to disrupt homeostasis. The lack of balance in oestrogen levels can lead to infertility, cancer, immunological disorders, and other conditions. Exogenous endocrine-active compounds, such as bisphenol A (BPA), phthalates, and organic phosphoric acid esters, can disrupt signalling pathways responsible for cell division and apoptosis processes. The metabolism of oestrogen and its structurally similar compounds can produce carcinogenic substances. It can also stimulate the growth of cancer cells by regulating genes crucial for cell proliferation and cell cycle progression, with long-term elevated levels linked to hormone-dependent cancers such as breast cancer. Oestrogens can also affect markers of immunological activation and contribute to the development of autoimmune diseases. Hormone replacement therapy, oral contraception, in vitro fertilisation stimulation, and hormonal stimulation of transgender people can increase the risk of breast cancer. Cortisol, similar in structure to oestrogen, can serve as a biomarker associated with the risk of developing breast cancer. The aim of this review is to analyse the sources of oestrogens and their effects on the endogenous and exogenous process of homeostasis.
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Affiliation(s)
- Joanna Bartkowiak-Wieczorek
- Physiology Department, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (A.G.); (P.W.-B.); (I.S.); (J.S.); (W.J.); (I.W.); (G.J.)
| | - Agnieszka Jaros
- Department of Clinical Pharmacy and Biopharmacy, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (A.J.); (A.B.)
| | - Anna Gajdzińska
- Physiology Department, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (A.G.); (P.W.-B.); (I.S.); (J.S.); (W.J.); (I.W.); (G.J.)
| | - Paulina Wojtyła-Buciora
- Physiology Department, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (A.G.); (P.W.-B.); (I.S.); (J.S.); (W.J.); (I.W.); (G.J.)
- Department of Social Medicine and Public Health, Calisia University, 62-800 Kalisz, Poland
| | - Igor Szymański
- Physiology Department, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (A.G.); (P.W.-B.); (I.S.); (J.S.); (W.J.); (I.W.); (G.J.)
| | - Julian Szymaniak
- Physiology Department, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (A.G.); (P.W.-B.); (I.S.); (J.S.); (W.J.); (I.W.); (G.J.)
| | - Wojciech Janusz
- Physiology Department, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (A.G.); (P.W.-B.); (I.S.); (J.S.); (W.J.); (I.W.); (G.J.)
| | - Iga Walczak
- Physiology Department, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (A.G.); (P.W.-B.); (I.S.); (J.S.); (W.J.); (I.W.); (G.J.)
| | - Gabriela Jonaszka
- Physiology Department, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (A.G.); (P.W.-B.); (I.S.); (J.S.); (W.J.); (I.W.); (G.J.)
| | - Agnieszka Bienert
- Department of Clinical Pharmacy and Biopharmacy, Poznan University of Medical Sciences, 61-701 Poznan, Poland; (A.J.); (A.B.)
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Vang A, Salem K, Fowler AM. Progesterone Receptor Gene Polymorphisms and Breast Cancer Risk. Endocrinology 2023; 164:7005421. [PMID: 36702635 DOI: 10.1210/endocr/bqad020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 12/16/2022] [Accepted: 01/24/2023] [Indexed: 01/28/2023]
Abstract
The objective of this systematic review was to investigate the association between polymorphisms in the progesterone receptor gene (PGR) and breast cancer risk. A search of PubMed, Scopus, and Web of Science databases was performed in November 2021. Study characteristics, minor allele frequencies, genotype frequencies, and odds ratios were extracted. Forty studies met the eligibility criteria and included 75 032 cases and 89 425 controls. Of the 84 PGR polymorphisms reported, 7 variants were associated with breast cancer risk in at least 1 study. These polymorphisms included an Alu insertion (intron 7) and rs1042838 (Val660Leu), also known as PROGINS. Other variants found to be associated with breast cancer risk included rs3740753 (Ser344Thr), rs10895068 (+331G/A), rs590688 (intron 2), rs1824128 (intron 3), and rs10895054 (intron 6). Increased risk of breast cancer was associated with rs1042838 (Val660Leu) in 2 studies, rs1824128 (intron 3) in 1 study, and rs10895054 (intron 6) in 1 study. The variant rs3740753 (Ser344Thr) was associated with decreased risk of breast cancer in 1 study. Mixed results were reported for rs590688 (intron 2), rs10895068 (+331G/A), and the Alu insertion. In a pooled analysis, the Alu insertion, rs1042838 (Val660Leu), rs3740753 (Ser344Thr), and rs10895068 (+331G/A) were not associated with breast cancer risk. Factors reported to contribute to differences in breast cancer risk associated with PGR polymorphisms included age, ethnicity, obesity, and postmenopausal hormone therapy use. PGR polymorphisms may have a small contribution to breast cancer risk in certain populations, but this is not conclusive with studies finding no association in larger, mixed populations.
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Affiliation(s)
- Alecia Vang
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
| | - Kelley Salem
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
| | - Amy M Fowler
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
- University of Wisconsin Carbone Cancer Center, Madison, WI 53792, USA
- Department of Medical Physics, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA
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Khorshid Shamshiri A, Alidoust M, Hemmati Nokandei M, Pasdar A, Afzaljavan F. Genetic architecture of mammographic density as a risk factor for breast cancer: a systematic review. CLINICAL & TRANSLATIONAL ONCOLOGY : OFFICIAL PUBLICATION OF THE FEDERATION OF SPANISH ONCOLOGY SOCIETIES AND OF THE NATIONAL CANCER INSTITUTE OF MEXICO 2023; 25:1729-1747. [PMID: 36639603 DOI: 10.1007/s12094-022-03071-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 12/30/2022] [Indexed: 01/15/2023]
Abstract
BACKGROUND Mammography Density (MD) is a potential risk marker that is influenced by genetic polymorphisms and can subsequently modulate the risk of breast cancer. This qualitative systematic review summarizes the genes and biological pathways involved in breast density and discusses the potential clinical implications in view of the genetic risk profile for breast density. METHODS The terms related to "Common genetic variations" and "Breast density" were searched in Scopus, PubMed, and Web of Science databases. Gene pathways analysis and assessment of protein interactions were also performed. RESULTS Eighty-six studies including 111 genes, reported a significant association between mammographic density in different populations. ESR1, IGF1, IGFBP3, and ZNF365 were the most prevalent genes. Moreover, estrogen metabolism, signal transduction, and prolactin signaling pathways were significantly related to the associated genes. Mammography density was an associated phenotype, and eight out of 111 genes, including COMT, CYP19A1, CYP1B1, ESR1, IGF1, IGFBP1, IGFBP3, and LSP1, were modifiers of this trait. CONCLUSION Genes involved in developmental processes and the evolution of secondary sexual traits play an important role in determining mammographic density. Due to the effect of breast tissue density on the risk of breast cancer, these genes may also be associated with breast cancer risk.
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Affiliation(s)
- Asma Khorshid Shamshiri
- Department of Medical Genetics and Molecular Medicine, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maryam Alidoust
- Department of Medical Genetics and Molecular Medicine, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahboubeh Hemmati Nokandei
- Department of Medical Genetics and Molecular Medicine, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Alireza Pasdar
- Department of Medical Genetics and Molecular Medicine, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
- Division of Applied Medicine, Medical School, University of Aberdeen, Foresterhill, Aberdeen, AB25 2ZD, UK.
| | - Fahimeh Afzaljavan
- Clinical Research Development Unit, Faculty of Medicine, Imam Reza Hospital, Mashhad University of Medical Sciences, Mashhad, 917794-8564, Iran.
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Akinjiyan FA, Han Y, Luo J, Toriola AT. Does circulating progesterone mediate the associations of single nucleotide polymorphisms in progesterone receptor (PGR)-related genes with mammographic breast density in premenopausal women? Discov Oncol 2021; 12:47. [PMID: 34790961 PMCID: PMC8566393 DOI: 10.1007/s12672-021-00438-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Accepted: 09/28/2021] [Indexed: 10/31/2022] Open
Abstract
Progesterone is a proliferative hormone in the breast but the associations of genetic variations in progesterone-regulated pathways with mammographic breast density (MD) in premenopausal women and whether these associations are mediated through circulating progesterone are not clearly defined. We, therefore, investigated these associations in 364 premenopausal women with a median age of 44 years. We sequenced 179 progesterone receptor (PGR)-related single nucleotide polymorphisms (SNPs). We measured volumetric percent density (VPD) and non-dense volume (NDV) using Volpara. Linear regression models were fit on circulating progesterone or VPD/NDV separately. We performed mediation analysis to evaluate whether the effect of a SNP on VPD/NDV is mediated through circulating progesterone. All analyses were adjusted for confounders, phase of menstrual cycle and the Benjamini-Hochberg false discovery (FDR) adjusted p-value was applied to correct for multiple testing. In multivariable analyses, only PGR rs657516 had a direct effect on VPD (averaged direct effect estimate = - 0.20, 95%CI = - 0.38 ~ - 0.04, p-value = 0.02) but this was not statistically significant after FDR correction and the effect was not mediated by circulating progesterone (mediation effect averaged across the two genotypes = 0.01, 95%CI = - 0.02 ~ 0.03, p-value = 0.70). Five SNPs (PGR rs11571241, rs11571239, rs1824128, rs11571150, PGRMC1 rs41294894) were associated with circulating progesterone but these were not statistically significant after FDR correction. SNPs in PGR-related genes were not associated with VPD, NDV and circulating progesterone did not mediate the associations, suggesting that the effects, if any, of these SNPs on MD are independent of circulating progesterone. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s12672-021-00438-1.
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Affiliation(s)
- Favour A. Akinjiyan
- Medical Scientist Training Program, Washington University School of Medicine, St. Louis, MO 63110 USA
| | - Yunan Han
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, Campus Box 8100, 660 South Euclid Ave, St. Louis, MO 63110 USA
- Department of Breast Surgery, First Hospital of China Medical University, Shenyang, 110001 Liaoning Province China
| | - Jingqin Luo
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, Campus Box 8100, 660 South Euclid Ave, St. Louis, MO 63110 USA
- Alvin J. Siteman Cancer Center at Barnes-Jewish Hospital and Washington University School of Medicine, St. Louis, MO 63110 USA
| | - Adetunji T. Toriola
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, Campus Box 8100, 660 South Euclid Ave, St. Louis, MO 63110 USA
- Alvin J. Siteman Cancer Center at Barnes-Jewish Hospital and Washington University School of Medicine, St. Louis, MO 63110 USA
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Hada M, Mondul AM, Weinstein SJ, Albanes D. Serum Retinol and Risk of Overall and Site-Specific Cancer in the ATBC Study. Am J Epidemiol 2020; 189:532-542. [PMID: 31612201 DOI: 10.1093/aje/kwz226] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 09/18/2019] [Accepted: 09/23/2019] [Indexed: 12/29/2022] Open
Abstract
Retinol, the most biologically active form of vitamin A, might influence cancer-related biological pathways. However, results from observational studies of serum retinol and cancer risk have been mixed. We prospectively examined serum retinol and risk of overall and site-specific cancer in the Alpha-Tocopherol, Beta-Carotene Cancer Prevention Study (n = 29,104 men), conducted in 1985-1993, with follow-up through 2012. Serum retinol concentration was measured using reverse-phase high-performance liquid chromatography. Cox proportional hazards models estimated the association between baseline serum retinol quintile and overall and site-specific cancer risk in 10,789 cases. After multivariable adjustment, higher serum retinol was not associated with overall cancer risk (highest vs. lowest quintile: hazard ratio (HR) = 0.97, 95% confidence interval (CI): 0.91, 1.03; P for trend = 0.43). Higher retinol concentrations were, however, associated with increased risk of prostate cancer (highest vs. lowest quintile: HR = 1.28, 95% CI: 1.13, 1.45; P for trend < 0.0001) and lower risk of both liver and lung cancers (highest vs. lowest quintile: for liver, HR = 0.62, 95% CI: 0.42, 0.91; P for trend = 0.004; and for lung, HR = 0.80, 95% CI: 0.72, 0.88; P for trend < 0.0001). No associations with other cancers were observed. Understanding the mechanisms that underlie these associations might provide insight into the role of vitamin A in cancer etiology.
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Affiliation(s)
- Manila Hada
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, Michigan
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Alison M Mondul
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, Michigan
| | - Stephanie J Weinstein
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Demetrius Albanes
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
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Secco JM, Elias S, de Carvalho CV, da Silva IDCG, de Campos KJ, Facina G, Nazário ACP. Mammographic density among indigenous women in forested areas in the state of Amapá, Brazil: a cross-sectional study. SAO PAULO MED J 2017; 135:355-362. [PMID: 28767986 PMCID: PMC10016001 DOI: 10.1590/1516-3180.2016.0146150317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 03/15/2017] [Indexed: 11/21/2022] Open
Abstract
CONTEXT AND OBJECTIVE: There is no register of breast cancer cases among indigenous populations in Brazil. The objective here was to evaluate the association of clinical and demographic characteristics with mammographic density among indigenous women. DESIGN AND SETTING: Cross-sectional analytical study conducted in indigenous territories in the state of Amapá, Brazil. METHODS: Women were recruited from three indigenous territories and underwent bilateral mammography and blood collection for hormonal analysis. They were interviewed with the aid of an interpreter. Mammographic density was calculated using computer assistance, and was expressed as dense or non-dense. RESULTS: A total of 137 indigenous women were included in this study, with an average age of 50.4 years, and an average age at the menarche of 12.8 years. Half (50.3%) of the 137 participants had not reached the menopause at the time of this study. The women had had an average of 8.7 children, and only two had never breastfed. The average body mass index of the population as a whole was 25.1 kg/m2. The mammographic evaluation showed that 82% of women had non-dense breasts. The clinical characteristics associated with mammographic density were age (P = 0.0001), follicle-stimulating hormone (FSH) (P < 0.001) and estrogen levels (P < 0.01). CONCLUSIONS: The majority of the indigenous women had non-dense breasts. Age, menopausal status and FSH and estrogen levels were associated with mammographic density.
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Affiliation(s)
- José Mauro Secco
- MD, PhD. Researcher, Universidade Federal de São Paulo (Unifesp), São Paulo (SP), and Adjunct Professor, Universidade Federal do Amapá (Unifap), Amapá (AP), Brazil.
| | - Simone Elias
- MD, PhD. Researcher, Universidade Federal de São Paulo (Unifesp), São Paulo (SP), Brazil.
| | - Cristina Valletta de Carvalho
- BSc, PhD. Researcher, Universidade Federal de São Paulo (Unifesp), and Adjunct Professor, Department of Biological Sciences, Centro Universitário Fundação Santo André, and Department of Genetics, Fundação ABC, São Paulo (SP), Brazil.
| | - Ismael Dale Cotrim Guerreiro da Silva
- MD, PhD. Researcher, Universidade Federal de São Paulo (Unifesp); Adjunct Professor and Coordinator of Molecular Gynecology Laboratory, Department of Gynecology; and Coordinator of Research and Technological Innovation within Biology, Universidade Federal de São Paulo (Unifesp), São Paulo (SP), Brazil.
| | - Kátia Jung de Campos
- MD, PhD. Researcher, Universidade Federal de São Paulo (Unifesp), São Paulo (SP), and Attending Physician and Residency Coordinator, Department of Gynecology, Universidade Federal do Amapá, Amapá (AP), Brazil.
| | - Gil Facina
- MD, PhD. Full Professor, Department of Gynecology and Head of Department of Mastology, Universidade Federal de São Paulo (Unifesp), São Paulo (SP), Brazil.
| | - Afonso Celso Pinto Nazário
- MD, PhD. Researcher and Full Professor, Universidade Federal de São Paulo (Unifesp), São Paulo (SP), Brazil.
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Hormone-related pathways and risk of breast cancer subtypes in African American women. Breast Cancer Res Treat 2015; 154:145-54. [PMID: 26458823 DOI: 10.1007/s10549-015-3594-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 10/05/2015] [Indexed: 12/28/2022]
Abstract
We sought to investigate genetic variation in hormone pathways in relation to risk of overall and subtype-specific breast cancer in women of African ancestry (AA). Genotyping and imputation yielded data on 143,934 SNPs in 308 hormone-related genes for 3663 breast cancer cases (1098 ER-, 1983 ER+, 582 ER unknown) and 4687 controls from the African American Breast Cancer Epidemiology and Risk (AMBER) Consortium. AMBER includes data from four large studies of AA women: the Carolina Breast Cancer Study, the Women's Circle of Health Study, the Black Women's Health Study, and the Multiethnic Cohort Study. Pathway- and gene-based analyses were conducted, and single-SNP tests were run for the top genes. There were no strong associations at the pathway level. The most significantly associated genes were GHRH, CALM2, CETP, and AKR1C1 for overall breast cancer (gene-based nominal p ≤ 0.01); NR0B1, IGF2R, CALM2, CYP1B1, and GRB2 for ER+ breast cancer (p ≤ 0.02); and PGR, MAPK3, MAP3K1, and LHCGR for ER- disease (p ≤ 0.02). Single-SNP tests for SNPs with pairwise linkage disequilibrium r (2) < 0.8 in the top genes identified 12 common SNPs (in CALM2, CETP, NR0B1, IGF2R, CYP1B1, PGR, MAPK3, and MAP3K1) associated with overall or subtype-specific breast cancer after gene-level correction for multiple testing. Rs11571215 in PGR (progesterone receptor) was the SNP most strongly associated with ER- disease. We identified eight genes in hormone pathways that contain common variants associated with breast cancer in AA women after gene-level correction for multiple testing.
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Gallegos-Arreola MP, Figuera LE, Flores-Ramos LG, Puebla-Pérez AM, Zúñiga-González GM. Association of the Alu insertion polymorphism in the progesterone receptor gene with breast cancer in a Mexican population. Arch Med Sci 2015; 11:551-60. [PMID: 26170848 PMCID: PMC4495151 DOI: 10.5114/aoms.2015.52357] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Revised: 10/12/2013] [Accepted: 11/17/2013] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION The progesterone receptor (PR) gene plays an important role in reproduction-related events. Data on polymorphisms in the PR gene have revealed associations with cancer, particularly for the Alu insertion polymorphism, which has been suggested to affect progesterone receptor function and contribute to tumor promotion in the mammary gland. MATERIAL AND METHODS We examined the role of the Alu insertion polymorphism in the PR gene by comparing the genotypes of 209 healthy Mexican women with those of 481 Mexican women with breast cancer (BC). RESULTS The genotype frequencies observed in the controls and BC patients were 0% and 4% for T2/T2 (Alu insertion), 16% and 21% for T1/T2, and 84% and 75% for T1/T1 (Alu deletion), respectively. The obtained odds ratio (OR) was 1.7, with a 95% confidence interval (95% CI) of 1.1-2.6, p = 0.009, for the T1/T2-T2/T2 genotypes. The association was also evident when the distributions of the T1/T2-T2/T2 genotypes in patients in the following categories were compared: obesity grade II (OR = 1.81, 95% CI: 1.03-3.18, p = 0.039) and the chemotherapy response (OR = 1.91, 95% CI: 1.27-3.067, p = 0.002). CONCLUSIONS The T1/T2-T2/T2 genotypes of the Alu insertion polymorphism in the PR gene are associated with BC susceptibility in the analyzed Mexican population.
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Affiliation(s)
- Martha Patricia Gallegos-Arreola
- Laboratorio de Genética Molecular, División de Medicina Molecular, Centro de Investigación Biomédica de Occidente (CIBO), Centro Médico Nacional de Occidente (CMNO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, México
| | - Luis E. Figuera
- División de Genética, CIBO, CMNO, IMSS, Guadalajara, Jalisco, México
- Doctorado en Genética Humana, CUCS-U de G, Guadalajara, Jalisco, México
| | - Liliana Gómez Flores-Ramos
- Laboratorio de Genética Molecular, División de Medicina Molecular, Centro de Investigación Biomédica de Occidente (CIBO), Centro Médico Nacional de Occidente (CMNO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, México
- Doctorado en Genética Humana, CUCS-U de G, Guadalajara, Jalisco, México
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Ellingjord-Dale M, Grotmol T, Lee E, Van Den Berg DJ, Hofvind S, Couto E, Sovio U, Dos-Santos-Silva I, Ursin G. Breast cancer susceptibility variants and mammographic density phenotypes in norwegian postmenopausal women. Cancer Epidemiol Biomarkers Prev 2014; 23:1752-63. [PMID: 25002657 DOI: 10.1158/1055-9965.epi-13-1212] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Mammographic density (MD) is one of the strongest known breast cancer risk factors. Twin studies have suggested that a large part of the variation in MD is genetically determined. We hypothesized that breast cancer susceptibility variants may affect MD, and that their effects may be modified by nongenetic factors. METHODS We assessed MD, using a computer-assisted method, on 2,348 postmenopausal Caucasian women (50-69 years) who participated in the Norwegian Breast Cancer Screening Program (NBCSP) in 2004 or 2006-07. We used linear regression (additive models) to determine the association between each SNP and MD, adjusting for age, body mass index (BMI), and study. We evaluated MD associations with 17 established breast cancer SNPs, overall, and by strata defined by non-genetic factors. RESULTS Two variants, 6q25.1-rs9383938 and TXNRD2-rs8141691, were statistically significantly associated with percent MD (P = 0.019 and 0.03, respectively), with the 6q25.1-rs9383938 association being consistent with the SNP effect on breast cancer risk. The effect of 6q25.1-rs3734805 on percent MD varied between parous and nulliparous women (Pinteraction = 0.02), whereas the effects of 9q31.2-rs865686 and MRPS30:FGF10-rs4415084 differed across strata of BMI (Pinteraction = 0.01 and 0.005, respectively). There was no evidence of effect modification by estrogen and progestin therapy use or alcohol consumption. CONCLUSION This study provides novel evidence of shared genetic risk factors between MD and breast cancer and of possible MD genetic-environmental interactions. IMPACT Although the results may be chance findings, they nevertheless highlight the need to investigate interactions with nongenetic factors in studies on the genetics of MD.
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Affiliation(s)
| | | | - Eunjung Lee
- University of Southern California, Los Angeles, California
| | | | | | - Elisabeth Couto
- Norwegian Knowledge Centre for the Health Services, Health Economic and Drug Unit, Oslo, Norway
| | - Ulla Sovio
- University of Cambridge, Cambridge, United Kingdom
| | | | - Giske Ursin
- University of Oslo, Oslo, Norway. Cancer Registry of Norway, Oslo, Norway.
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Huo CW, Chew GL, Britt KL, Ingman WV, Henderson MA, Hopper JL, Thompson EW. Mammographic density-a review on the current understanding of its association with breast cancer. Breast Cancer Res Treat 2014; 144:479-502. [PMID: 24615497 DOI: 10.1007/s10549-014-2901-2] [Citation(s) in RCA: 144] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Accepted: 02/24/2014] [Indexed: 01/07/2023]
Abstract
There has been considerable recent interest in the genetic, biological and epidemiological basis of mammographic density (MD), and the search for causative links between MD and breast cancer (BC) risk. This report will critically review the current literature on MD and summarize the current evidence for its association with BC. Keywords 'mammographic dens*', 'dense mammary tissue' or 'percent dens*' were used to search the existing literature in English on PubMed and Medline. All reports were critically analyzed. The data were assigned to one of the following aspects of MD: general association with BC, its relationship with the breast hormonal milieu, the cellular basis of MD, the generic variations of MD, and its significance in the clinical setting. MD adjusted for age, and BMI is associated with increased risk of BC diagnosis, advanced tumour stage at diagnosis and increased risk of both local recurrence and second primary cancers. The MD measures that predict BC risk have high heritability, and to date several genetic markers associated with BC risk have been found to also be associated with these MD risk predictors. Change in MD could be a predictor of the extent of chemoprevention with tamoxifen. Although the biological and genetic pathways that determine and perhaps modulate MD remain largely unresolved, significant inroads are being made into the understanding of MD, which may lead to benefits in clinical screening, assessment and treatment strategies. This review provides a timely update on the current understanding of MD's association with BC risk.
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Affiliation(s)
- C W Huo
- Department of Surgery, University of Melbourne, St. Vincent's Hospital, Melbourne, Australia,
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CYP17 and CYP19 genetic variants are not associated with age at natural menopause in Polish women. Reprod Biol 2012; 12:368-73. [PMID: 23229009 DOI: 10.1016/j.repbio.2012.10.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Accepted: 07/12/2012] [Indexed: 11/22/2022]
Abstract
The aim of the study was to investigate associations between two common polymorphisms of CYP17 and CYP19, encoding key enzymes of estrogen biosynthesis, and age at menopause in Polish women. One hundred fifty women after menopause (49.5±3.8 years), with no previous history of hormone replacement therapy took part in the study. The genetic control group consisted of 150 newborns from the same population. We investigated an association between the age at menopause and the single nucleotide polymorphism T→C in the 5' untranslated region (promoter) of the CYP17 gene (c.-34T>C; rs743572 - MspA1) or the number of tetranucleotide repeats [TTTA](n) (rs60271534) including deletion/insertion (D/I) of a 3 bp sequence in intron 4 of the CYP19 gene. CYP17 polymorphism was analyzed by PCR-RFLP and CYP19 by PCR and capillary electrophoresis. In the case of CYP17 polymorphism, 28.7% and 36.7% wild homozygous (TT), 50.7% and 46.0% heterozygous (TC), as well as 20.6% and 17.3% mutated homozygous (CC) types were identified in the subjects and controls, respectively. The frequency of mutated alleles (C) was 46.0% vs. 40.3% (p=0.19). In the case of CYP19 polymorphism, 34.0% and 32.0% of homozygotes (1_1), 50.7% and 51.3% of heterozygotes (1_2), 15.3% and 16.7% of homozygotes (2_2) were identified in the subjects and controls, respectively. No association between the studied CYP17 or CYP19 polymorphisms and age at menopause was found in Polish women.
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Ellingjord-Dale M, Lee E, Couto E, Ozhand A, Qureshi S, Hofvind S, Van Den Berg DJ, Akslen LA, Grotmol T, Ursin G. Polymorphisms in hormone metabolism and growth factor genes and mammographic density in Norwegian postmenopausal hormone therapy users and non-users. Breast Cancer Res 2012; 14:R135. [PMID: 23095343 PMCID: PMC4053113 DOI: 10.1186/bcr3337] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Accepted: 08/30/2012] [Indexed: 01/10/2023] Open
Abstract
INTRODUCTION Mammographic density (MD) is one of the strongest known breast cancer risk factors. Estrogen and progestin therapy (EPT) has been associated with increases in MD. Dense breast tissue is characterized by increased stromal tissue and (to a lesser degree) increased numbers of breast epithelial cells. It is possible that genetic factors modify the association between EPT and MD, and that certain genetic variants are particularly important in determining MD in hormone users. We evaluated the association between MD and 340 tagging single nucleotide polymorphisms (SNPs) from about 30 candidate genes in hormone metabolism/growth factor pathways among women who participated in the Norwegian Breast Cancer Screening Program (NBCSP) in 2004. METHODS We assessed MD on 2,036 postmenopausal women aged 50 to 69 years using a computer-assisted method (Madena, University of Southern California) in a cross-sectional study. We used linear regression to determine the association between each SNP and MD, adjusting for potential confounders. The postmenopausal women were stratified into HT users (EPT and estrogen-only) and non-users (never HT). RESULTS For current EPT users, there was an association between a variant in the prolactin gene (PRL; rs10946545) and MD (dominant model, Bonferroni-adjusted P (Pb) = 0.0144). This association remained statistically significant among current users of norethisterone acetate (NETA)-based EPT, a regimen common in Nordic countries. Among current estrogen-only users (ET), there was an association between rs4670813 in the cytochrome P450 gene (CYP1B1) and MD (dominant model, Pb = 0.0396). In never HT users, rs769177 in the tumor necrosis factor (TNF) gene and rs1968752 in the region of the sulfotransferase gene (SULT1A1/SULT1A2), were significantly associated with MD (Pb = 0.0202; Pb = 0.0349). CONCLUSIONS We found some evidence that variants in the PRL gene were associated with MD in current EPT and NETA users. In never HT users, variants in the TNF and SULT1A1/SULT1A2 genes were significantly associated with MD. These findings may suggest that several genes in the hormone metabolism and growth factor pathways are implicated in determining MD.
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Giacomazzi J, Aguiar E, Palmero E, Schmidt A, Skonieski G, Duarte Filho D, Bock H, Saraiva-Pereira M, Schuler-Faccini L, Camey S, Caleffi M, Giugliani R, Ashton-Prolla P. Prevalence of the STK15 F31I polymorphism and its relationship with mammographic density. Braz J Med Biol Res 2011; 44:291-6. [DOI: 10.1590/s0100-879x2011007500029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2010] [Accepted: 02/04/2011] [Indexed: 01/26/2023] Open
Affiliation(s)
- J. Giacomazzi
- Universidade Federal do Rio Grande do Sul, Brasil; Hospital de Clínicas de Porto Alegre; Associação Hospitalar Moinhos de Vento, Brasil
| | - E. Aguiar
- Universidade Federal do Rio Grande do Sul, Brasil; Hospital de Clínicas de Porto Alegre; Associação Hospitalar Moinhos de Vento, Brasil
| | - E.I. Palmero
- Universidade Federal do Rio Grande do Sul, Brasil; Hospital de Clínicas de Porto Alegre; Associação Hospitalar Moinhos de Vento, Brasil
| | - A.V. Schmidt
- Universidade Federal do Rio Grande do Sul, Brasil
| | | | | | - H. Bock
- Hospital de Clínicas de Porto Alegre
| | - M.L. Saraiva-Pereira
- Universidade Federal do Rio Grande do Sul; Hospital de Clínicas de Porto Alegre; Hospital de Clínicas de Porto Alegre, Brasil
| | - L. Schuler-Faccini
- Universidade Federal do Rio Grande do Sul, Brasil; Hospital de Clínicas de Porto Alegre, Brasil
| | - S.A. Camey
- Universidade Federal do Rio Grande do Sul
| | - M. Caleffi
- Associação Hospitalar Moinhos de Vento, Brasil
| | - R. Giugliani
- Universidade Federal do Rio Grande do Sul, Brasil; Universidade Federal do Rio Grande do Sul, Brasil; Hospital de Clínicas de Porto Alegre; Hospital de Clínicas de Porto Alegre, Brasil
| | - P. Ashton-Prolla
- Universidade Federal do Rio Grande do Sul, Brasil; Universidade Federal do Rio Grande do Sul, Brasil; Hospital de Clínicas de Porto Alegre; Hospital de Clínicas de Porto Alegre, Brasil; Associação Hospitalar Moinhos de Vento, Brasil
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Andersen ML, Alvarenga TA, Mazzotti DR, Guindalini C, Pellegrino R, Barrueco KF, Santos-Silva R, Bittencourt LR, Tufik S. Hormonal profile, the PROGINS polymorphism, and erectile dysfunction complaints: data from a population-based survey. Fertil Steril 2011; 95:621-4. [DOI: 10.1016/j.fertnstert.2010.10.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2010] [Revised: 09/25/2010] [Accepted: 10/12/2010] [Indexed: 12/20/2022]
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Li J, Eriksson L, Humphreys K, Czene K, Liu J, Tamimi RM, Lindström S, Hunter DJ, Vachon CM, Couch FJ, Scott CG, Lagiou P, Hall P. Genetic variation in the estrogen metabolic pathway and mammographic density as an intermediate phenotype of breast cancer. Breast Cancer Res 2010; 12:R19. [PMID: 20214802 PMCID: PMC2879563 DOI: 10.1186/bcr2488] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2009] [Revised: 03/01/2010] [Accepted: 03/09/2010] [Indexed: 01/01/2023] Open
Abstract
Introduction Several studies have examined the effect of genetic variants in genes involved in the estrogen metabolic pathway on mammographic density, but the number of loci studied and the sample sizes evaluated have been small and pathways have not been evaluated comprehensively. In this study, we evaluate the association between mammographic density and genetic variants of the estrogen metabolic pathway. Methods A total of 239 SNPs in 34 estrogen metabolic genes were studied in 1,731 Swedish women who participated in a breast cancer case-control study, of which 891 were cases and 840 were controls. Film mammograms of the medio-lateral oblique view were digitalized and the software Cumulus was used for computer-assisted semi-automated thresholding of mammographic density. Generalized linear models controlling for possible confounders were used to evaluate the effects of SNPs on mammographic density. Results found to be nominally significant were examined in two independent populations. The admixture maximum likelihood-based global test was performed to evaluate the cumulative effect from multiple SNPs within the whole metabolic pathway and three subpathways for androgen synthesis, androgen-to-estrogen conversion and estrogen removal. Results Genetic variants of genes involved in estrogen metabolism exhibited no appreciable effect on mammographic density. None of the nominally significant findings were validated. In addition, global analyses on the overall estrogen metabolic pathway and its subpathways did not yield statistically significant results. Conclusions Overall, there is no conclusive evidence that genetic variants in genes involved in the estrogen metabolic pathway are associated with mammographic density in postmenopausal women.
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Affiliation(s)
- Jingmei Li
- Karolinska Institutet, Department of Medical Epidemiology and Biostatistics, Stockholm, Sweden.
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