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Coutinho EA, Esparza LA, Rodriguez J, Yang J, Schafer D, Kauffman AS. Targeted inhibition of kisspeptin neurons reverses hyperandrogenemia and abnormal hyperactive LH secretion in a preclinical mouse model of polycystic ovary syndrome. Hum Reprod 2024:deae153. [PMID: 38978296 DOI: 10.1093/humrep/deae153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 06/11/2024] [Indexed: 07/10/2024] Open
Abstract
STUDY QUESTION Do hyperactive kisspeptin neurons contribute to abnormally high LH secretion and downstream hyperandrogenemia in polycystic ovary syndrome (PCOS)-like conditions and can inhibition of kisspeptin neurons rescue such endocrine impairments? SUMMARY ANSWER Targeted inhibition of endogenous kisspeptin neuron activity in a mouse model of PCOS reduced the abnormally hyperactive LH pulse secretion and hyperandrogenemia to healthy control levels. WHAT IS KNOWN ALREADY PCOS is a reproductive disorder characterized by hyperandrogenemia, anovulation, and/or polycystic ovaries, along with a hallmark feature of abnormal LH hyper-pulsatility, but the mechanisms underlying the endocrine impairments remain unclear. A chronic letrozole (LET; aromatase inhibitor) mouse model recapitulates PCOS phenotypes, including polycystic ovaries, anovulation, high testosterone, and hyperactive LH pulses. LET PCOS-like females also have increased hypothalamic kisspeptin neuronal activation which may drive their hyperactive LH secretion and hyperandrogenemia, but this has not been tested. STUDY DESIGN, SIZE, DURATION Transgenic KissCRE+/hM4Di female mice or littermates Cre- controls were treated with placebo, or chronic LET (50 µg/day) to induce a PCOS-like phenotype, followed by acute (once) or chronic (2 weeks) clozapine-N-oxide (CNO) exposure to chemogenetically inhibit kisspeptin cells (n = 6 to 10 mice/group). PARTICIPANTS/MATERIALS, SETTING, METHODS Key endocrine measures, including in vivo LH pulse secretion patterns and circulating testosterone levels, were assessed before and after selective kisspeptin neuron inhibition and compared between PCOS groups and healthy controls. Alterations in body weights were measured and pituitary and ovarian gene expression was determined by qRT-PCR. MAIN RESULTS AND THE ROLE OF CHANCE Acute targeted inhibition of kisspeptin neurons in PCOS mice successfully lowered the abnormally hyperactive LH pulse secretion (P < 0.05). Likewise, chronic selective suppression of kisspeptin neuron activity reversed the previously high LH and testosterone levels (P < 0.05) down to healthy control levels and rescued reproductive gene expression (P < 0. 05). LARGE SCALE DATA N/A. LIMITATIONS, REASONS FOR CAUTION Ovarian morphology was not assessed in this study. Additionally, mouse models can offer mechanistic insights into neuroendocrine processes in PCOS-like conditions but may not perfectly mirror PCOS in women. WIDER IMPLICATIONS OF THE FINDINGS These data support the hypothesis that overactive kisspeptin neurons can drive neuroendocrine PCOS-like impairments, and this may occur in PCOS women. Our findings complement recent clinical investigations using NKB receptor antagonists to lower LH in PCOS women and suggest that pharmacological dose-dependent modulation of kisspeptin neuron activity may be a valuable future therapeutic target to clinically treat hyperandrogenism and lower elevated LH in PCOS women. STUDY FUNDING/COMPETING INTEREST(S) This research was supported by NIH grants R01 HD111650, R01 HD090161, R01 HD100580, P50 HD012303, R01 AG078185, and NIH R24 HD102061, and a pilot project award from the British Society for Neuroendocrinology. There are no competing interests.
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Affiliation(s)
- Eulalia A Coutinho
- Department of OBGYN and Reproductive Sciences, University of California San Diego, La Jolla, CA, USA
| | - Lourdes A Esparza
- Department of OBGYN and Reproductive Sciences, University of California San Diego, La Jolla, CA, USA
| | - Julian Rodriguez
- Department of OBGYN and Reproductive Sciences, University of California San Diego, La Jolla, CA, USA
| | - Jason Yang
- Department of OBGYN and Reproductive Sciences, University of California San Diego, La Jolla, CA, USA
| | - Danielle Schafer
- Department of OBGYN and Reproductive Sciences, University of California San Diego, La Jolla, CA, USA
| | - Alexander S Kauffman
- Department of OBGYN and Reproductive Sciences, University of California San Diego, La Jolla, CA, USA
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Sharma P, Kumar Singh A, Senapati S, Singh Kapoor H, Devi Goyal L, Kaur B, Kamra P, Khetarpal P. Genetic Variants of Steroidogenesis and Gonadotropin Pathways and Polycystic Ovary Syndrome Susceptibility: A Systematic Review and Meta-analysis. Metab Syndr Relat Disord 2024; 22:15-26. [PMID: 37878274 DOI: 10.1089/met.2023.0127] [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] [Indexed: 10/26/2023] Open
Abstract
Genetic variants are predisposing factors to polycystic ovary syndrome (PCOS), a multifactorial condition that often gets triggered due to various environmental factors. The study investigates the association of the variants of genes that are involved in the steroidogenesis pathway or gonadotropin pathway with the risk of PCOS. Appropriate keywords for predetermined genes were used to search in PubMed, Google Scholar, Science Direct, and Central Cochrane Library up to January 11, 2023. PROSPERO (CRD42022275425). Inclusion criteria: (a) case-control study; (b) genotype or allelic data. Exclusion criteria were: (a) duplicate studies; (b) clinical trials, systematic reviews, meta-analysis or conference abstract, case reports; (c) other than the English language; (d) having insufficient data; e) genetic variants for which meta-analysis has been reported recently and does not have a scope of the update. Various genetic models were applied as per data availability. Overall 12 variants of 7 genes were selected for the analysis. Relevant data were extracted from 47 studies which include 10,584 PCOS subjects and 16,150 healthy controls. Meta-analysis indicates a significant association between TOX3 rs4784165 [ORs = 1.08, 95% CI (1.00-1.16)], HMGA2 rs2272046 [ORs = 2.73, 95% CI (1.97-3.78)], YAP1 rs1894116 [OR = 1.22, 95% CI (1.13-1.33)] and increased risk of PCOS. Whereas FSHR rs2268361 [ORs = 0.84, 95% CI (0.78-0.89)] is associated with decreased PCOS risk. When sensitivity analysis was carried out, the association became significant for CYP19 rs700519 and FSHR rs6165 under an additive model. In addition, C9Orf3 rs3802457 became significantly associated with decreased PCOS risk with the removal of one study. Insignificant association was observed for CYP19A (rs2470152), FSHR (rs2349415, rs6166), C9Orf3 (rs4385527), GnRH1 (rs6185) and risk of PCOS. Our findings suggest association of CYP19A (rs700519), TOX3 (rs4784165), HMGA2 (rs2272046), FSHR (rs6165, rs2268361), C9orf3 (rs3802457), and YAP1 (rs1894116) with risk for PCOS.
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Affiliation(s)
- Priya Sharma
- Laboratory for Reproductive and Developmental Disorders, Department of Human Genetics and Molecular Medicine, School of Health Sciences, Central University of Punjab, Bathinda, India
| | - Abhilash Kumar Singh
- Department of Human Genetics and Molecular Medicine, School of Health Science, Central University of Punjab, Bathinda, India
| | - Sabyasachi Senapati
- Department of Human Genetics and Molecular Medicine, School of Health Science, Central University of Punjab, Bathinda, India
| | | | - Lajya Devi Goyal
- Department of Obstetrics and Gynaecology, AIIMS, Bathinda, India
| | - Balpreet Kaur
- Department of Obstetrics and Gynaecology, AIIMS, Bathinda, India
| | - Pooja Kamra
- Department of Obstetrics and Gynaecology, Kamra Hospital, Malout, India
| | - Preeti Khetarpal
- Laboratory for Reproductive and Developmental Disorders, Department of Human Genetics and Molecular Medicine, School of Health Sciences, Central University of Punjab, Bathinda, India
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Chen A, Handzel A, Sau L, Cui L, Kelley ST, Thackray VG. Metabolic dysregulation and gut dysbiosis linked to hyperandrogenism in female mice. Endocrinol Diabetes Metab 2024; 7:e443. [PMID: 37872876 PMCID: PMC10782063 DOI: 10.1002/edm2.443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 07/03/2023] [Accepted: 07/05/2023] [Indexed: 10/25/2023] Open
Abstract
INTRODUCTION Polycystic ovary syndrome (PCOS) is a common endocrine pathology in women. In addition to infertility, women with PCOS have metabolic dysregulation which predisposes them to Type 2 diabetes, cardiovascular disease and non-alcoholic fatty liver disease. Moreover, women with PCOS have changes in their gut microbial community that may be indicative of dysbiosis. While hyperandrogenism is associated with both the development of metabolic dysfunction and gut dysbiosis in females, the mechanisms involved are not well understood. METHODS We used dihydrotestosterone (DHT) and ovariectomy (OVX) mouse models coupled with metabolic assessments and 16S rRNA gene sequencing to explore the contributions of hyperandrogenism and oestrogen deficiency to the development of insulin resistance and gut microbial dysbiosis in pubertal female mice. RESULTS We demonstrated that, while DHT treatment or OVX alone were insufficient to induce insulin resistance during the pubertal-to-adult transition, combining OVX with DHT resulted in insulin resistance similar to that observed in letrozole-treated mice with elevated testosterone and decreased oestrogen levels. In addition, our results showed that OVX and DHT in combination resulted in a distinct shift in the gut microbiome compared to DHT or OVX alone, suggesting that the substantial metabolic dysregulation occurring in the OVX + DHT model was accompanied by unique changes in the abundances of gut bacteria including S24-7, Rikenellaceae and Mucispirillum schaedleri. CONCLUSIONS While hyperandrogenism plays an important role in the development of metabolic dysregulation in female mice, our results indicate that investigation into additional factors influencing insulin resistance and the gut microbiome during the pubertal-to-adult transition could provide additional insight into the pathophysiology of PCOS.
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Affiliation(s)
- Annie Chen
- Department of Obstetrics, Gynecology and Reproductive SciencesUniversity of CaliforniaSan Diego, La JollaCaliforniaUSA
| | - Alex Handzel
- Bioinformatics and Medical Informatics ProgramSan Diego State UniversitySan DiegoCaliforniaUSA
| | - Lillian Sau
- Department of Obstetrics, Gynecology and Reproductive SciencesUniversity of CaliforniaSan Diego, La JollaCaliforniaUSA
| | - Laura Cui
- Department of Obstetrics, Gynecology and Reproductive SciencesUniversity of CaliforniaSan Diego, La JollaCaliforniaUSA
| | - Scott T. Kelley
- Bioinformatics and Medical Informatics ProgramSan Diego State UniversitySan DiegoCaliforniaUSA
- Department of BiologySan Diego State UniversitySan DiegoCaliforniaUSA
| | - Varykina G. Thackray
- Department of Obstetrics, Gynecology and Reproductive SciencesUniversity of CaliforniaSan Diego, La JollaCaliforniaUSA
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Casteleiro Alves MM, Almeida M, Oliani AH, Breitenfeld L, Ramalhinho AC. CYP19A1 TC/CC Polymorphism, along with Deletion of GSTM1 and GSTT1 Genes, Strongly Influences Female Infertility Risk. Antioxidants (Basel) 2023; 12:antiox12040940. [PMID: 37107315 PMCID: PMC10135531 DOI: 10.3390/antiox12040940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/11/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023] Open
Abstract
Oxidative stress has a fundamental role in the pathophysiology of various conditions, like infertility. This case-control study was performed to assess the potential role of CYP19A1, GSTM1, and GSTT1 in modifying individual predisposition to female infertility. Genotyping of 201 women with established infertility and 161 fertile female controls was performed, and statistical associations were analyzed. For carriers of GSTM1 null genotype along with CYP19A1 C allele, there is a significant association with female infertility risk (OR 7.023; 95% CI (3.627-13.601; p < 0.001), and, also for carriers of GSTT1 null genotype along with the CYP19A1 TC/CC genotype (OR 24.150; 95% CI (11.148-52.317; p < 0.001). A positive association with female infertility risk for carriers of the C allele in CYP19A1 and null genotypes in GTSM1 (OR 11.979; 95% CI (4.570-31.400; p < 0.001) or GSTT1 (OR 13.169; 95% CI (4.518-38.380; p < 0.001) was found. When both GSTs are deleted, the risk of developing female infertility is significant, independently of the CYP19A1 genotype; when all the presumed high-risk genotypes are present, we found a significant association with female infertility risk (OR 47,914; 95% CI (14,051-163,393; p < 0.001).
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Affiliation(s)
- Maria Manuel Casteleiro Alves
- Health Sciences Research Centre (CICS), Faculty of Health Sciences, University of Beira Interior (UBI), 6201-506 Covilhã, Portugal
- Assisted Reproduction Laboratory of Academic Hospital of Cova da Beira (CHUCB), 6200-251 Covilhã, Portugal
| | - Micaela Almeida
- Health Sciences Research Centre (CICS), Faculty of Health Sciences, University of Beira Interior (UBI), 6201-506 Covilhã, Portugal
| | - António Hélio Oliani
- Health Sciences Research Centre (CICS), Faculty of Health Sciences, University of Beira Interior (UBI), 6201-506 Covilhã, Portugal
- Assisted Reproduction Laboratory of Academic Hospital of Cova da Beira (CHUCB), 6200-251 Covilhã, Portugal
- Department of Obstetrics and Gynecology, São José do Rio Preto School of Medicine (FAMERP), São José do Rio Preto 15090-000, Brazil
| | - Luiza Breitenfeld
- Health Sciences Research Centre (CICS), Faculty of Health Sciences, University of Beira Interior (UBI), 6201-506 Covilhã, Portugal
| | - Ana Cristina Ramalhinho
- Health Sciences Research Centre (CICS), Faculty of Health Sciences, University of Beira Interior (UBI), 6201-506 Covilhã, Portugal
- Assisted Reproduction Laboratory of Academic Hospital of Cova da Beira (CHUCB), 6200-251 Covilhã, Portugal
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He H, Deng Y, Wan H, Shen N, Li J, Zeng Q, Chang J, Lu Q, Miao X, Tian J, Zhong R. Urinary bisphenol A and its interaction with CYP17A1 rs743572 are associated with breast cancer risk. CHEMOSPHERE 2022; 286:131880. [PMID: 34426286 DOI: 10.1016/j.chemosphere.2021.131880] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 07/26/2021] [Accepted: 08/11/2021] [Indexed: 06/13/2023]
Abstract
OBJECTIVE Bisphenol A (BPA), a common endocrine disrupter, can be activated by cytochrome P450 (CYP) metabolizing enzymes and might influence the development of breast cancer (BC). We hypothesized that BPA could interact with CYP genes, synergistically contributing to the BC risk. METHODS Urinary BPA was measured in a total of 302 newly diagnosed BC patients and 302 healthy controls by ultra-high performance liquid chromatography-high resolution mass spectrometry. A set of seven CYP gene polymorphisms was genotyped by using the Sequenom MassARRAY system. A multivariate logistic regression model was used to assess the associations of BPA and BPA-SNP interaction with BC risk. RESULTS BC patients had a higher urinary BPA concentration than healthy individuals (P < 0.001). Each 1-unit increase in log-transformed urinary BPA was associated with a 54 % increased BC risk [95 % confidence interval (CI), 1.34-1.77, P < 0.001]. Individuals with the CYP19A1 rs1902580 GA + AA genotype showed a significantly higher BC risk than those with the GG genotype (OR = 1.45, 95 % CI, 1.01-2.09, P < 0.05). A significant BPA-CYP17A1 rs743572 interaction was found to be associated with a higher risk of BC (Pinteraction = 0.020). Compared with low-BPA individuals carrying CYP17A1 rs743572 GG genotypes, high-BPA individuals with the GA + AA genotype had a higher BC risk, with an odds ratio of 2.49 (95 % CI, 1.52-4.13, P < 0.05). CONCLUSIONS The positive association of BPA exposure with BC risk might be modified by CYP17A1 rs743572, providing evidence for the interaction effect of environment-genes on the etiology of BC.
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Affiliation(s)
- Heng He
- Department of Epidemiology and Biostatistics and Ministry of Education Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yao Deng
- Department of Epidemiology and Biostatistics and Ministry of Education Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Zhuhai Precision Medical Center, Zhuhai People's Hospital (Zhuhai Hospital Affiliated with Jinan University), Zhuhai, China
| | - Hao Wan
- Department of Epidemiology and Biostatistics and Ministry of Education Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Na Shen
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiaoyuan Li
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qiang Zeng
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiang Chang
- Department of Epidemiology and Biostatistics and Ministry of Education Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qing Lu
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoping Miao
- Department of Epidemiology and Biostatistics and Ministry of Education Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jianbo Tian
- Department of Epidemiology and Biostatistics and Ministry of Education Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Rong Zhong
- Department of Epidemiology and Biostatistics and Ministry of Education Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Lv F, Huang W, Wang Y. The CYP19A1 rs700519 Polymorphism and Breast Cancer Susceptibility in China: A Case-Control Study and Updated Meta-Analysis. Genet Test Mol Biomarkers 2021; 25:486-495. [PMID: 34280004 DOI: 10.1089/gtmb.2021.0032] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Objective: Breast cancer (BC), the most prevalent cancer in women, has been associated with several genetic factors, including the CYP19A1 rs700519 polymorphism; however, the conclusions have not been consistent. This case-control study and meta-analysis aimed to further assess the relationship between the CYP19A1 rs700519 polymorphism and BC susceptibility. Materials and Methods: We conducted a case-control study to assess the relationship of the CYP19A1 rs700519 polymorphism with the risk and prognosis of BC. Subsequently, we performed a meta-analysis of the case-control studies. Results: In the case-control study, we found a significant negative relationship between the rs700519 AA genotype and risk (χ2 = 7.503, p < 0.01) and disease-free survival rates (hazard rate = 0.400, 95% confidence interval [CI] = 0.181-0.883, p < 0.01) of patients with BC, especially in postmenopausal hormone receptor-positive (HR+) patients. Nine case-control studies were included in the meta-analysis. The CYP19A1 rs700519 polymorphism was significantly associated with BC susceptibility in the dominant (odds ratio [OR] = 0.95, 95% CI = 0.90-1.00, p = 0.05) and allelic models (OR = 0.84, 95% CI = 0.75-0.93, p < 0.01), but not in the recessive model. Sensitivity analysis revealed that the study results were stable, whereas the funnel plot revealed some publication bias. Conclusions: The CYP19A1 rs700519 polymorphism is related to breast tumorigenesis.
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Affiliation(s)
- Fei Lv
- Department of Oncology and Shengjing Hospital of China Medical University, Shenyang, China
| | - Wanying Huang
- Department of Pathology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ying Wang
- Department of Oncology and Shengjing Hospital of China Medical University, Shenyang, China
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Guo L, Liu Y, Liu L, Shao S, Cao Y, Guo J, Niu H. The CYP19A1 (TTTA)n Repeat Polymorphism May Affect the Prostate Cancer Risk: Evidence from a Meta-Analysis. Am J Mens Health 2021; 15:15579883211017033. [PMID: 34036824 PMCID: PMC8161905 DOI: 10.1177/15579883211017033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Abnormal aromatase (CYP19A1) expression may participate in prostate cancer (PCa) carcinogenesis. However, the results of studies on the CYP19A1 gene polymorphisms and PCa are conflicting. This meta-analysis aimed to systematically evaluate the associations between the CYP19A1 Arg264Cys polymorphism and the (TTTA)n repeat polymorphism and PCa. Electronic databases (PubMed, EmBase, ScienceDirect, and Cochrane Library) were comprehensively searched to identify eligible studies. The strength of the association between the Arg264Cys polymorphism and PCa was assessed by pooled odds ratios (ORs) and 95% confidence intervals (95% CIs) in allelic, dominant, recessive, homozygous, and heterozygous genetic models. To analyze the impact of the (TTTA)n repeat polymorphism, we sequentially took the N-repeat allele (where N equals 7,8,10,11,12, and 13) as the minor allele and the sum of all the other alleles as the major allele. The ORs and 95% CIs were calculated in the allelic model; this analysis was performed individually for each repeat number. Pooled estimates of nine studies addressing the Arg264Cys polymorphism indicated that this polymorphism was not associated with PCa risk in the overall population or in the Caucasian or Asian subgroups. The 8-repeat allele in the (TTTA)n repeat polymorphism increased PCa risk in the overall population (OR = 1.34, 95% CI = 1.14-1.58, p = .001) and in the subgroup with population-based (PB) controls (OR = 1.41, 95% CI = 1.13-1.74, p = .002) as well as in the subgroup using capillary electrophoresis to identify this polymorphism (OR = 1.34, 95% CI = 1.09-1.65, p = .006).The meta-analysis indicated that the CYP19A1 (TTTA)n repeat polymorphism, but not the Arg264Cys polymorphism, may affect PCa risk.
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Affiliation(s)
- Lei Guo
- Department of Urology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Yanan Liu
- Department of Urology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Lijun Liu
- Department of Neurology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Shixiu Shao
- Department of Urology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Yanwei Cao
- Department of Urology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Jiaming Guo
- Department of Urology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Haitao Niu
- Department of Urology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
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Alwan AM, Afzaljavan F, Tavakol Afshari J, Homaei Shandiz F, Barati Bagherabad M, Vahednia E, Kheradmand N, Pasdar A. The impact of CYP19A1 variants and haplotypes on breast cancer risk, clinicopathological features and prognosis. Mol Genet Genomic Med 2021; 9:e1705. [PMID: 34014013 PMCID: PMC8372086 DOI: 10.1002/mgg3.1705] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 01/28/2021] [Accepted: 04/13/2021] [Indexed: 12/30/2022] Open
Abstract
Background Different genetic variants in hormone‐regulating pathways have been identified to influence the risk of breast cancer. This study aimed to evaluate the association of CYP19A1 rs10046 and rs700519 polymorphisms with the risk, clinicopathological factors and prognosis of breast cancer. Methods In a case‐control study, rs10046 and rs700519 polymorphisms were genotyped using ARMS‐PCR and high‐resolution melting (HRM), respectively, in a total of 702 females. Statistical analysis and evaluation of haplotypes and linkage disequilibrium were performed using SPSS v16, PHASE and 2LD. Results Although no association of rs700519 with breast cancer was observed, rs10046 in different genetic models as well as C‐C/C‐T and C‐C/C‐C diplotypes, revealed the association with the risk of breast cancer (p < 0.05). Moreover, the rs700519‐C allele was shown to be associated with longer overall survival. In contrast, the T‐T haplotype conferred s a shorter overall survival. rs700519‐C allele was also significantly associated with menarche age. Conclusion Based on the identified independent association between CYP19A1 diplotypes and rs700519‐C allele with the risk and prognosis of the disease, the gene region and its genetic variants may have a diagnostic and prognostic role in breast cancer development. Further confirmation using other variants in this locus can validate these findings.
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Affiliation(s)
- Ahmad Mohammed Alwan
- Immunology Research Group, Immunogenetic Section, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Fahimeh Afzaljavan
- 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
| | - Jalil Tavakol Afshari
- Immunology Research Group, Immunogenetic Section, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Matineh Barati Bagherabad
- Department of Medical Genetics and Molecular Medicine, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Elham Vahednia
- Department of Medical Genetics and Molecular Medicine, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Nahid Kheradmand
- Department of Medical Genetics and Molecular Medicine, 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, UK
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Yang T, Wu WJ, Tian LM, Zhang DF, Yang XY, Qi J, Tu Y, He L. The Associations of Androgen-Related Genes CYP21A2 and CYP19A1 with Severe Acne Vulgaris in Patients from Southwest China. Clin Cosmet Investig Dermatol 2021; 14:313-331. [PMID: 33824600 PMCID: PMC8018560 DOI: 10.2147/ccid.s293171] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 02/03/2021] [Indexed: 12/13/2022]
Abstract
Objective Androgens acting through the androgen receptor play a crucial role in the pathogenesis of acne. This study aimed to identify whether two key genes (CYP21A2 and CYP19A1) involved in the synthesis and metabolism of androgens were associated with Pillsbury III-IV severe acne vulgaris. Methods We carried out a standard questionnaire survey about acne and enlisted 600 Pillsbury III-IV severe acne vulgaris patients and 652 healthy controls of Han Chinese descent from Yunnan, China in the study. Twenty-two single nucleotide polymorphisms (SNPs) were genotyped by SNaPshot assay and analyzed for association with severe acne. Results There was no significant difference in gender between the two groups (P = 0.085), and the age of the acne case group was significantly lower than that of the control group (P < 0.001). Our results revealed that only two SNPs, rs6474 (p.Arg102Lys) (P = 0.001) and rs6465 (P = 0.025) of the CYP21A2 gene were significantly associated with severe acne among the Han Chinese. When subjects were divided into males and females, significant associations were observed only in male patients with severe acne vulgaris for four variants: CYP21A2 rs6474 (p.Arg102Lys) (P = 0.002); CYP21A2 rs6465 (P = 0.012); CYP19A1 rs8023263 (P = 0.037); and CYP19A1 rs2470152 (P = 0.007). Haplotype analyses showed that the distribution of CYP21A2 haplotypes was significantly associated with male patients, while no association of CYP19A1 haplotypes was observed. The structure of the human CYP21A2 consists of two substrate binding sites and one substrate access channel. Conclusion This study shed a light on a potentially important effect of CYP21A2 and CYP19A1 genes in severe acne vulgaris in the Han Chinese, especially for male patients. Future studies using independently verified datasets from a broader geographical spectrum will be valuable in identifying the causal and functional variants responsible for severe acne vulgaris within the CYP19A1 and CYP21A2 genes.
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Affiliation(s)
- Ting Yang
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650023, People's Republic of China.,Department of Dermatology, Huangshi Central Hospital, Affiliated Hospital of Hubei Polytechnic University, Edong Healthcare Group, Huangshi, Hubei, 435000, People's Republic of China
| | - Wen-Juan Wu
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650023, People's Republic of China
| | - Li-Ming Tian
- Department of Dermatology, First Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, People's Republic of China
| | - Deng-Feng Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, 650223, People's Republic of China
| | - Xiao-Yan Yang
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650023, People's Republic of China
| | - Jue Qi
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650023, People's Republic of China
| | - Ying Tu
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650023, People's Republic of China
| | - Li He
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650023, People's Republic of China
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10
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Ding H, Zhang J, Zhang F, Zhang S, Chen X, Liang W, Xie Q. Resistance to the Insulin and Elevated Level of Androgen: A Major Cause of Polycystic Ovary Syndrome. Front Endocrinol (Lausanne) 2021; 12:741764. [PMID: 34745009 PMCID: PMC8564180 DOI: 10.3389/fendo.2021.741764] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 09/22/2021] [Indexed: 01/27/2023] Open
Abstract
PCOS has a wide range of negative impacts on women's health and is one of the most frequent reproductive systemic endocrine disorders. PCOS has complex characteristics and symptom heterogeneity due to the several pathways that are involved in the infection and the absence of a comm14on cause. A recent study has shown that the main etiology and endocrine aspects of PCOS are the increased level of androgen, which is also known as "hyperandrogenemia (HA)" and secondly the "insulin resistance (IR)". The major underlying cause of the polycystic ovary is these two IR and HA, by initiating the disease and its severity or duration. As a consequence, study on Pathogenesis is crucial to understand the effect of "HA" and "IR" on the pathophysiology of numerous symptoms linked to PCOS. A deep understanding of the pattern of the growth in PCOS for HA and IR can help ameliorate the condition, along with adjustments in nutrition and life, as well as the discovery of new medicinal products. However, further research is required to clarify the mutual role of IR and HA on PCOS development.
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Affiliation(s)
- Haigang Ding
- Department of Gynecology, Shaoxing Maternity and Child Health Care Hospital, Shaoxing, China
- Obstetrics and Gynecology Hospital of Shaoxing University, Shaoxing, China
| | - Juan Zhang
- Department of Gynecology, Shaoxing Maternity and Child Health Care Hospital, Shaoxing, China
- Obstetrics and Gynecology Hospital of Shaoxing University, Shaoxing, China
| | - Feng Zhang
- Department of Gynecology, Shaoxing Maternity and Child Health Care Hospital, Shaoxing, China
- Obstetrics and Gynecology Hospital of Shaoxing University, Shaoxing, China
| | - Songou Zhang
- College of Medicine, Shaoxing University, Shaoxing, China
| | - Xiaozhen Chen
- College of Medicine, Shaoxing University, Shaoxing, China
| | - Wenqing Liang
- Medical Research Center, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
- *Correspondence: Qiong Xie, ; Wenqing Liang,
| | - Qiong Xie
- Department of Gynecology, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
- *Correspondence: Qiong Xie, ; Wenqing Liang,
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11
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Panghiyangani R, Soeharso P, Andrijono, Suryandari DA, Wiweko B, Kurniati M, Pujianto DA. CYP19A1 Gene Expression in Patients with Polycystic Ovarian Syndrome. J Hum Reprod Sci 2020; 13:100-103. [PMID: 32792756 PMCID: PMC7394102 DOI: 10.4103/jhrs.jhrs_142_18] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 02/05/2019] [Accepted: 02/28/2020] [Indexed: 11/07/2022] Open
Abstract
Context: Polycystic ovarian syndrome (PCOS) is a common endocrine system disorder among the women of reproductive age, yet the etiology of PCOS remains unclear. Infertility in females with PCOS can be caused by anovulation, high luteinizing hormone levels, and hyperandrogenism. Aims: This research analyzed the role of the aromatase gene (CYP19A1) in PCOS pathogenesis. Settings and Design: This study used an observational, cross-sectional design. Subjects and Methods: A total of 110 research participants (55 PCOS patients and 55 non-PCOS patients) were included in the study. Statistical Analysis Used: A real-time quantitative polymerase chain reaction was used to analyze the mRNA expression for aromatase in granulosa cells. Results: The relative expression of aromatase mRNA is lower in women with PCOS compared to those without PCOS (P < 0.05). Relative expression of CYP19A1 (aromatase) mRNA in PCOS group was 0.38 ± 0.25, whereas in non-PCOS group was 1.00 ± 0.00. The decline in aromatase activity contributes to an increase in testosterone level. This condition has a role in hyperandrogenism which is a typical characteristic of PCOS women. Granulosa cells in polycystic ovary undergo disturbance in the development and cannot respond to follicle-stimulating hormone (FSH) stimulation. Lack of stimulation of FSH causes induction inadequacy to aromatase enzyme activity in the aromatization process. The decline in FSH activity is caused by various factors that are associated with typical characteristics of PCOS. Conclusions: There is a decrease in the relative expression rate of granulosa cells’ aromatase mRNA in women with PCOS compared to the non-PCOS.
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Affiliation(s)
- Roselina Panghiyangani
- Department of Biomedic, Faculty of Medicine, Lambung Mangkurat University, Banjarmasin, South Borneo
| | - Purnomo Soeharso
- Department of Biology, Faculty of Medicine, University of Indonesia, Jakarta, Indonesia
| | - Andrijono
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Indonesia, Jakarta, Indonesia
| | - Dwi Anita Suryandari
- Department of Biology, Faculty of Medicine, University of Indonesia, Jakarta, Indonesia
| | - Budi Wiweko
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility Faculty of Medicine, University of Indonesia, Jakarta, Indonesia.,Yasmin IVF Clinic, Dr. Cipto Mangunkusumo General Hospital, Jakarta, Indonesia.,Human Reproductive, Infertility, and Family Planning Research Center, Faculty of Medicine, Indonesian Medical Education, Jakarta, Indonesia
| | - Mala Kurniati
- Department of Biology, Faculty of Medicine, Malahayati University, Bandar Lampung, Indonesia
| | - Dwi Ari Pujianto
- Department of Biology, Faculty of Medicine, University of Indonesia, Jakarta, Indonesia
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12
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Esparza LA, Schafer D, Ho BS, Thackray VG, Kauffman AS. Hyperactive LH Pulses and Elevated Kisspeptin and NKB Gene Expression in the Arcuate Nucleus of a PCOS Mouse Model. Endocrinology 2020; 161:5730164. [PMID: 32031594 PMCID: PMC7341557 DOI: 10.1210/endocr/bqaa018] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 02/05/2020] [Indexed: 11/19/2022]
Abstract
Polycystic ovary syndrome (PCOS), a common reproductive disorder in women, is characterized by hyperandrogenemia, chronic anovulation, cystic ovarian follicles, and luteinizing hormone (LH) hyper-pulsatility, but the pathophysiology isn't completely understood. We recently reported a novel mouse model of PCOS using chronic letrozole (LET; aromatase inhibitor). Letrozole-treated females demonstrate multiple PCOS-like phenotypes, including polycystic ovaries, anovulation, and elevated circulating testosterone and LH, assayed in "one-off" measures. However, due to technical limitations, in vivo LH pulsatile secretion, which is elevated in PCOS women, was not previously studied, nor were the possible changes in reproductive neurons. Here, we used recent technical advances to examine in vivo LH pulse dynamics of freely moving LET female mice versus control and ovariectomized (OVX) mice. We also determined whether neural gene expression of important reproductive regulators such as kisspeptin, neurokinin B (NKB), and dynorphin, is altered in LET females. Compared to controls, LET females exhibited very rapid, elevated in vivo LH pulsatility, with increased pulse frequency, amplitude, and basal levels, similar to PCOS women. Letrozole-treated mice also had markedly elevated Kiss1, Tac2, and Pdyn expression and increased Kiss1 neuronal activation in the hypothalamic arcuate nucleus. Notably, the hyperactive LH pulses and increased kisspeptin neuron measures of LET mice were not as elevated as OVX females. Our findings indicate that LET mice, like PCOS women, have markedly elevated LH pulsatility, which likely drives increased androgen secretion. Increased hypothalamic kisspeptin and NKB levels may be fundamental contributors to the hyperactive LH pulse secretion in the LET PCOS-like condition and, perhaps, in PCOS women.
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Affiliation(s)
- Lourdes A Esparza
- Department of OBGYN and Reproductive Sciences, University of California San Diego, La Jolla, California
| | - Danielle Schafer
- Department of OBGYN and Reproductive Sciences, University of California San Diego, La Jolla, California
| | - Brian S Ho
- Department of OBGYN and Reproductive Sciences, University of California San Diego, La Jolla, California
| | - Varykina G Thackray
- Department of OBGYN and Reproductive Sciences, University of California San Diego, La Jolla, California
| | - Alexander S Kauffman
- Department of OBGYN and Reproductive Sciences, University of California San Diego, La Jolla, California
- Correspondence: Dr. Alexander S. Kauffman, Department of Reproductive Medicine, Leichtag Building, Room 3A-15, University of California San Diego, 9500 Gilman Drive #0674, La Jolla, California 92093. E-mail:
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13
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Saddick SY. Identifying genes associated with the development of human polycystic ovary syndrome. Saudi J Biol Sci 2020; 27:1271-1279. [PMID: 32346335 PMCID: PMC7183000 DOI: 10.1016/j.sjbs.2020.01.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 01/06/2020] [Accepted: 01/07/2020] [Indexed: 12/20/2022] Open
Abstract
The pathophysiology of polycystic ovary syndrome (PCOS) is confusing until today as it is a multifactorial endocrine disorder. It is presented with altered gonadotropin levels, bulky multi-follicular ovaries, infertility, and obesity. This complex pathophysiology is linked with insulin resistance and hyperandrogenism. Hyperandrogenemia significantly contributes towards cosmetic anomalies including hirsutism, acne, and alopecia in the PCOS women. The preexisting insulin resistance in women with PCOS is likely to aggravate the increased levels of androgen. The review findings have shown that in the steroidogenic pathway, ovarian steroidogenesis patterns classify mainly towards the hypertrophy of theca cells along with alteration in the expression of key enzymes. The association of polymorphisms in genes encoding the process of an intricate cascade of steroidogenesis is delineated. The emergence of an unanimously accepted genetic marker for susceptible PCOS was affected based on inconsistent findings. The present study has provided a comprehensive summary of the impact of polymorphisms among the common androgen-related genes to govern the genetic predisposition.
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Affiliation(s)
- Salina Y Saddick
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
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14
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Hu Y, Tan A, Yu L, Hou C, Kuang H, Wu Q, Su J, Zhou Q, Zhu Y, Zhang C, Wei W, Li L, Li W, Huang Y, Huang H, Xie X, Lu T, Zhang H, Yang X, Gao Y, Li T, Jiang Y, Mo Z. A phenomics-based approach for the detection and interpretation of shared genetic influences on 29 biochemical indices in southern Chinese men. BMC Genomics 2019; 20:983. [PMID: 31842750 PMCID: PMC6916074 DOI: 10.1186/s12864-019-6363-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Accepted: 12/02/2019] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Phenomics provides new technologies and platforms as a systematic phenome-genome approach. However, few studies have reported on the systematic mining of shared genetics among clinical biochemical indices based on phenomics methods, especially in China. This study aimed to apply phenomics to systematically explore shared genetics among 29 biochemical indices based on the Fangchenggang Area Male Health and Examination Survey cohort. RESULT A total of 1999 subjects with 29 biochemical indices and 709,211 single nucleotide polymorphisms (SNPs) were subjected to phenomics analysis. Three bioinformatics methods, namely, Pearson's test, Jaccard's index, and linkage disequilibrium score regression, were used. The results showed that 29 biochemical indices were from a network. IgA, IgG, IgE, IgM, HCY, AFP and B12 were in the central community of 29 biochemical indices. Key genes and loci associated with metabolism traits were further identified, and shared genetics analysis showed that 29 SNPs (P < 10- 4) were associated with three or more traits. After integrating the SNPs related to two or more traits with the GWAS catalogue, 31 SNPs were found to be associated with several diseases (P < 10- 8). Using ALDH2 as an example to preliminarily explore its biological function, we also confirmed that the rs671 (ALDH2) polymorphism affected multiple traits of osteogenesis and adipogenesis differentiation in 3 T3-L1 preadipocytes. CONCLUSION All these findings indicated a network of shared genetics and 29 biochemical indices, which will help fully understand the genetics participating in biochemical metabolism.
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Affiliation(s)
- Yanling Hu
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, 530021, Guangxi, China.,Life Sciences Institute, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Aihua Tan
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, 530021, Guangxi, China.,Department of chemotherapy, The Affiliated Tumor Hospital of Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Lei Yu
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Chenyang Hou
- Department of Information and Management, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Haofa Kuang
- Life Sciences Institute, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Qunying Wu
- Department of Biochemistry and Molecular Biology, School of Pre-Clinical Medicine, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Jinghan Su
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Qingniao Zhou
- Department of Biochemistry and Molecular Biology, School of Pre-Clinical Medicine, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Yuanyuan Zhu
- Life Sciences Institute, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Chenqi Zhang
- Life Sciences Institute, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Wei Wei
- Life Sciences Institute, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Lianfeng Li
- Department of Information and Management, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Weidong Li
- Life Sciences Institute, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Yuanjie Huang
- Life Sciences Institute, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Hongli Huang
- Life Sciences Institute, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Xing Xie
- Life Sciences Institute, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Tingxi Lu
- Department of Information and Management, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Haiying Zhang
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Xiaobo Yang
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Yong Gao
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Tianyu Li
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Yonghua Jiang
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, 530021, Guangxi, China.
| | - Zengnan Mo
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, 530021, Guangxi, China.
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15
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Torres PJ, Skarra DV, Ho BS, Sau L, Anvar AR, Kelley ST, Thackray VG. Letrozole treatment of adult female mice results in a similar reproductive phenotype but distinct changes in metabolism and the gut microbiome compared to pubertal mice. BMC Microbiol 2019; 19:57. [PMID: 30871463 PMCID: PMC6419356 DOI: 10.1186/s12866-019-1425-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 02/22/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND A majority of women with polycystic ovary syndrome (PCOS) have metabolic dysfunction that results in an increased risk of type 2 diabetes. We previously developed a pubertal mouse model using the aromatase inhibitor, letrozole, which recapitulates many of the reproductive and metabolic features of PCOS. To further our understanding of the effects of androgen excess, we compared the effects of letrozole treatment initiated in puberty versus adulthood on reproductive and metabolic phenotypes as well as on the gut microbiome. RESULTS Letrozole treatment of both pubertal and adult female mice resulted in reproductive hallmarks of PCOS, including hyperandrogenemia, anovulation and polycystic ovaries. However, unlike pubertal mice, treatment of adult female mice resulted in modest weight gain and abdominal adiposity, minimal elevation in fasting blood glucose and insulin levels, and no detectable insulin resistance. In addition, letrozole treatment of adult mice was associated with a distinct shift in gut microbial diversity compared to letrozole treatment of pubertal mice. CONCLUSIONS Our results indicate that dysregulation of metabolism and the gut microbiome in PCOS may be influenced by the timing of androgen exposure. In addition, the minimal weight gain and lack of insulin resistance in adult female mice after letrozole treatment indicates that this model may be useful for investigating the effects of hyperandrogenemia on the hypothalamic-pituitary-gonadal axis and the periphery without the influence of substantial metabolic dysregulation.
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Affiliation(s)
- Pedro J. Torres
- Department of Biology, San Diego State University, San Diego, CA USA
| | - Danalea V. Skarra
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Diego, La Jolla, CA 92093 USA
| | - Bryan S. Ho
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Diego, La Jolla, CA 92093 USA
| | - Lillian Sau
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Diego, La Jolla, CA 92093 USA
| | - Arya R. Anvar
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Diego, La Jolla, CA 92093 USA
| | - Scott T. Kelley
- Department of Biology, San Diego State University, San Diego, CA USA
| | - Varykina G. Thackray
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Diego, La Jolla, CA 92093 USA
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16
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Yamamoto MMW, de Medeiros SF. Differential activity of the corticosteroidogenic enzymes in normal cycling women and women with polycystic ovary syndrome. Rev Endocr Metab Disord 2019; 20:3-13. [PMID: 30798426 DOI: 10.1007/s11154-019-09482-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The phenotypic complex of patients with definitive diagnosis of polycystic ovary syndrome may include patients with normal and high serum androgen levels. Patients with hyperandrogenemia seem to present higher risk of changes to the glucose and lipid metabolism and, eventually, of earlier development of cardiovascular diseases than normoandrogenemic patients or healthy women. From a laboratory and clinical point of view, it is important to check androgen levels in patients with polycystic ovary syndrome. The identification of partial insufficiency of a given corticosteroidogenic enzyme is also relevant to understand the physiopathology of androgen increase in polycystic ovary syndrome. Therefore, the present review analyzes the functions of the different enzymes involved in the ovary and adrenal steroidogenesis in normal cycling women and in patients with polycystic ovary syndrome. In addition, it emphasizes appropriate reason for investigating eventual enzyme deficiency to provide rationale for prescription and follow-up of women with polycystic ovary syndrome.
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Affiliation(s)
| | - Sebastião Freitas de Medeiros
- Tropical Institute of Reproductive Medicine, Cuiabá, MT, Brazil.
- Department of Gynecology and Obstetrics, Faculty of Medicine, Federal University of Mato Grosso, Cuiabá, MT, 78060-900, Brazil.
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17
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The role of DENND1A and CYP19A1 gene variants in individual susceptibility to obesity in Turkish population-a preliminary study. Mol Biol Rep 2018; 45:2193-2199. [PMID: 30232779 DOI: 10.1007/s11033-018-4380-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 09/12/2018] [Indexed: 01/12/2023]
Abstract
Single nucleotide polymorphisms (SNPs), the most common genetic variations in human genome, can manage the predisposition of certain complex diseases or situations such as obesity. Genetic polymorphisms also play an important role as they can impact a population's susceptibility to being overweight or obese and developing related chronic complications such as hypertension, coronary heart disease, diabetes and cancer. The present study comprised of 193 unrelated healthy volunteers (120 females and 73 males) with Turkish origin. Only female adolescents (n = 110) were divided into 2 categories according to their BMI values as overweight (BMI ≥ 25) and normal (18.5 < BMI < 25) according to WHO classification. Genomic DNA was isolated from venous blood samples and genotyping of DENND1A rs10818854 and CYP19A1 rs2414096 variants was performed on Roche Light Cycler 2.0 Real-Time PCR platform. Serum hormone levels were analyzed by Electrochemiluminescent Immunoassay (ECLIA; Roche diagnostics). The genotype distributions were consistent with the Hardy-Weinberg equilibrium for both SNPs in the studied population (p > 0.05). The genotype distribution of DENND1A rs10818854 was determined for the first time in Turkish population and the variant allele frequency was found as 0.095. According to reduced sex hormone-binding globulin levels and increased free androgen index in the present study, obesity was linked with hyperandrogenism in female subjects. Both polymorphisms were investigated as potential genetic susceptibility markers for obesity and neither DENND1A nor CYP19A1 showed any associations.
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18
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Ryan GE, Malik S, Mellon PL. Antiandrogen Treatment Ameliorates Reproductive and Metabolic Phenotypes in the Letrozole-Induced Mouse Model of PCOS. Endocrinology 2018; 159:1734-1747. [PMID: 29471436 PMCID: PMC6097580 DOI: 10.1210/en.2017-03218] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 02/03/2018] [Indexed: 12/31/2022]
Abstract
Polycystic ovary syndrome (PCOS), the most common endocrinopathy in women of reproductive age, is characterized by hyperandrogenism, anovulation, and polycystic ovaries. Although its etiology is unknown, excess androgens are thought to be a critical factor driving the pathology of PCOS. We previously demonstrated that continuous exposure to the aromatase inhibitor letrozole (LET) in mice produces many hallmarks of PCOS, including elevated testosterone (T) and luteinizing hormone, anovulation, and obesity. In the current study, we sought to determine whether androgen receptor (AR) actions are responsible for any of the phenotypes observed in LET mice. C57BL/6 female mice were subcutaneously implanted with LET or placebo control and subsequently treated with the nonsteroidal AR antagonist flutamide or vehicle control. Flutamide treatment in LET females reversed elevated T levels and restored ovarian expression of Cyp17a1 (critical for androgen synthesis) to normal levels. Pituitary expression of Lhb was decreased in LET females that received flutamide treatment, with no changes in expression of Fshb or Gnrhr. Flutamide treatment also restored estrous cycling and reduced the number of ovarian cyst-like follicles in LET females. Furthermore, body weight and adipocyte size were decreased in flutamide-treated LET females. Altogether, our findings provide strong evidence that AR signaling is responsible for many key reproductive and metabolic PCOS phenotypes and further establish the LET mouse model as an important tool for the study of androgen excess.
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Affiliation(s)
- Genevieve E Ryan
- Department of Reproductive Medicine, Center for Reproductive Science and Medicine, University of California, San Diego, La Jolla, California
| | - Shaddy Malik
- Department of Reproductive Medicine, Center for Reproductive Science and Medicine, University of California, San Diego, La Jolla, California
| | - Pamela L Mellon
- Department of Reproductive Medicine, Center for Reproductive Science and Medicine, University of California, San Diego, La Jolla, California
- Correspondence: Pamela L. Mellon, PhD, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093. E-mail:
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19
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Kaur R, Kaur T, Kaur A. Genetic association study from North India to analyze association of CYP19A1 and CYP17A1 with polycystic ovary syndrome. J Assist Reprod Genet 2018; 35:1123-1129. [PMID: 29564739 DOI: 10.1007/s10815-018-1162-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 03/14/2018] [Indexed: 11/30/2022] Open
Abstract
PURPOSE Polycystic ovary syndrome (PCOS) is a complex multifactorial endocrine disorder affecting approximately 5-10% of women of reproductive age. Affected women have menstrual disturbances due to anovulation, infertility, and hyperandrogenism. Ovarian androgen overproduction is the key physiopathologic feature of PCOS. A number of genes encoding major enzymes of the androgen metabolic pathways, such as HSD17B6, CYP19A1, CYP11A1, CYP17A1, and INSR, have been examined. Very few studies have been done in North India. There is an increasing prevalence of PCOS in women in Punjab and it is the leading cause of female infertility. In view of the strong evidence implicating the importance of CYP19A1 and CYP17A1 in androgen metabolic pathways, we investigated the association of rs700519, rs2414096, and rs743572 (- 34T>C) polymorphisms on susceptibility of developing PCOS, in North India. METHODS A total of 500 subjects (women of reproductive age) including 250 PCOS cases and 250 healthy age-matched controls were included in the present study. DNA was extracted from venous blood for all samples, and association analysis for rs2414096, rs700519, and rs743572 was done by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique. Lipid profile was done using a biochemical analyzer and body mass index (BMI) was measured for all cases. Statistical analysis was performed. RESULTS Significant association of - 34T>C polymorphism of CYP17A1 was found with PCOS (p = 0.0005). BMI was statistically different between PCOS cases and controls (p = 0.000). Triglycerides were high in PCOS women. Variations of CYP19A1 were not statistically significant with PCOS. CONCLUSIONS These data suggest that - 34T>C polymorphism in CYP17A1 is associated with PCOS in North India. No polymorphism of CYP19A1 was found to be associated.
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Affiliation(s)
- Ratneev Kaur
- Department of Human Genetics, Guru Nanak Dev University, Amritsar, Punjab, 143005, India
| | - Tajinder Kaur
- Hartej Hospital, Ranjit Avenue, Amritsar, Punjab, 143001, India
| | - Anupam Kaur
- Department of Human Genetics, Guru Nanak Dev University, Amritsar, Punjab, 143005, India.
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Dadachanji R, Shaikh N, Mukherjee S. Genetic Variants Associated with Hyperandrogenemia in PCOS Pathophysiology. GENETICS RESEARCH INTERNATIONAL 2018; 2018:7624932. [PMID: 29670770 PMCID: PMC5835258 DOI: 10.1155/2018/7624932] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 01/18/2018] [Indexed: 12/18/2022]
Abstract
Polycystic ovary syndrome is a multifactorial endocrine disorder whose pathophysiology baffles many researchers till today. This syndrome is typically characterized by anovulatory cycles and infertility, altered gonadotropin levels, obesity, and bulky multifollicular ovaries on ultrasound. Hyperandrogenism and insulin resistance are hallmark features of its complex pathophysiology. Hyperandrogenemia is a salient feature of PCOS and a major contributor to cosmetic anomalies including hirsutism, acne, and male pattern alopecia in affected women. Increased androgen levels may be intrinsic or aggravated by preexisting insulin resistance in women with PCOS. Studies have reported augmented ovarian steroidogenesis patterns attributed mainly to theca cell hypertrophy and altered expression of key enzymes in the steroidogenic pathway. Candidate gene studies have been performed in order to delineate the association of polymorphisms in genes, which encode enzymes in the intricate cascade of steroidogenesis or modulate the levels and action of circulating androgens, with risk of PCOS development and its related traits. However, inconsistent findings have impacted the emergence of a unanimously accepted genetic marker for PCOS susceptibility. In the current review, we have summarized the influence of polymorphisms in important androgen related genes in governing genetic predisposition to PCOS and its related metabolic and reproductive traits.
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Affiliation(s)
- Roshan Dadachanji
- Department of Molecular Endocrinology, National Institute for Research in Reproductive Health, J.M. Street, Parel, Mumbai 400012, India
| | - Nuzhat Shaikh
- Department of Molecular Endocrinology, National Institute for Research in Reproductive Health, J.M. Street, Parel, Mumbai 400012, India
| | - Srabani Mukherjee
- Department of Molecular Endocrinology, National Institute for Research in Reproductive Health, J.M. Street, Parel, Mumbai 400012, India
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Iorga A, Cunningham CM, Moazeni S, Ruffenach G, Umar S, Eghbali M. The protective role of estrogen and estrogen receptors in cardiovascular disease and the controversial use of estrogen therapy. Biol Sex Differ 2017; 8:33. [PMID: 29065927 PMCID: PMC5655818 DOI: 10.1186/s13293-017-0152-8] [Citation(s) in RCA: 450] [Impact Index Per Article: 64.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 10/04/2017] [Indexed: 12/15/2022] Open
Abstract
Epidemiologic studies have previously suggested that premenopausal females have reduced incidence of cardiovascular disease (CVD) when compared to age-matched males, and the incidence and severity of CVD increases postmenopause. The lower incidence of cardiovascular disease in women during reproductive age is attributed at least in part to estrogen (E2). E2 binds to the traditional E2 receptors (ERs), estrogen receptor alpha (ERα), and estrogen receptor beta (ERβ), as well as the more recently identified G-protein-coupled ER (GPR30), and can exert both genomic and non-genomic actions. This review summarizes the protective role of E2 and its receptors in the cardiovascular system and discusses its underlying mechanisms with an emphasis on oxidative stress, fibrosis, angiogenesis, and vascular function. This review also presents the sexual dimorphic role of ERs in modulating E2 action in cardiovascular disease. The controversies surrounding the clinical use of exogenous E2 as a therapeutic agent for cardiovascular disease in women due to the possible risks of thrombotic events, cancers, and arrhythmia are also discussed. Endogenous local E2 biosynthesis from the conversion of testosterone to E2 via aromatase enzyme offers a novel therapeutic paradigm. Targeting specific ERs in the cardiovascular system may result in novel and possibly safer therapeutic options for cardiovascular protection.
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Affiliation(s)
- Andrea Iorga
- Present address: Department of Medicine, Division of Gastroenterology/Liver, Keck School of Medicine of the University of Southern California, Los Angeles, CA, 90033, USA
| | - Christine M Cunningham
- Department of Anesthesiology, Division of Molecular Medicine, David Geffen School of Medicine at University of California, Los Angeles, BH-160CHS, Los Angeles, CA, 90095-7115, USA
| | - Shayan Moazeni
- Department of Anesthesiology, Division of Molecular Medicine, David Geffen School of Medicine at University of California, Los Angeles, BH-160CHS, Los Angeles, CA, 90095-7115, USA
| | - Gregoire Ruffenach
- Department of Anesthesiology, Division of Molecular Medicine, David Geffen School of Medicine at University of California, Los Angeles, BH-160CHS, Los Angeles, CA, 90095-7115, USA
| | - Soban Umar
- Department of Anesthesiology, Division of Molecular Medicine, David Geffen School of Medicine at University of California, Los Angeles, BH-160CHS, Los Angeles, CA, 90095-7115, USA
| | - Mansoureh Eghbali
- Department of Anesthesiology, Division of Molecular Medicine, David Geffen School of Medicine at University of California, Los Angeles, BH-160CHS, Los Angeles, CA, 90095-7115, USA.
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Dou Q, Tan L, Ma LY, Sun YP. The relationship between the CYP19 alleles rs727479A/C, rs700518A/G, and rs700519C/T and pregnancy outcome after assisted reproductive technology in patients with polycystic ovary syndrome in a Chinese population: A population-based study. Kaohsiung J Med Sci 2017; 33:558-566. [PMID: 29050673 DOI: 10.1016/j.kjms.2017.06.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 06/07/2017] [Accepted: 06/08/2017] [Indexed: 11/17/2022] Open
Abstract
This study investigated the relationship between the CYP19 alleles, rs727479A/C, rs700518A/G, and rs700519C/T, and pregnancy outcome after assisted reproductive technology (ART) in patients with polycystic ovary syndrome (PCOS). Between January 2012 and September 2015, 293 PCOS patients undergoing ART were randomly selected for the study. According to pregnancy outcome after ART, the patients were assigned to pregnancy and non-pregnancy groups. CYP19 rs727479A/C, rs700518A/G and rs700519C/T genotypes were determined using the denaturing high-performance liquid chromatography (DHPLC) method. Haplotype frequencies of the CYP19 alleles rs727479A/C, rs700518A/G and rs700519C/T were estimated using the SHEsis platform. Logistic regression analysis was employed to analyze the factors influencing the pregnancy outcome after ART. The frequency of the AC + CC genotype of rs727479A/C was higher in the pregnancy group than in the non-pregnancy group. The frequency of the CT + TT genotype of rs700519A/G was also higher in the pregnancy group than in the non-pregnancy group. Haplotype analysis indicated that the AAC and AGT haplotypes both exhibited unfavorable influence on the pregnancy outcome after ART. The AAT and CGT haplotypes were favorable to the pregnancy outcome after ART. Logistic regression analysis suggested that the rs727479A/C AA genotype, the rs700519C/T CC genotype and body mass index (BMI) might exert unfavorable influence on the pregnancy outcome after ART for PCOS patients. These findings indicated that the CYP19 alleles rs727479A/C and rs700519C/T might be associated with the pregnancy outcome after ART in patients with PCOS.
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Affiliation(s)
- Qian Dou
- Reproductive Medical Center, The Second Affiliated Hospital of Zhengzhou University, PR China
| | - Li Tan
- Reproductive Medical Center, The Second Affiliated Hospital of Zhengzhou University, PR China
| | - Li-Ying Ma
- Reproductive Medical Center, The Second Affiliated Hospital of Zhengzhou University, PR China
| | - Ying-Pu Sun
- Reproductive Medical Center, The First Affiliated Hospital of Zhengzhou University, PR China.
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Belani M, Shah P, Banker M, Gupta S. Dual effect of insulin resistance and cadmium on human granulosa cells - In vitro study. Toxicol Appl Pharmacol 2016; 313:119-130. [DOI: 10.1016/j.taap.2016.10.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 10/10/2016] [Accepted: 10/24/2016] [Indexed: 12/29/2022]
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Sung J, Song YM. Genetic effects on serum testosterone and sex hormone-binding globulin in men: a Korean twin and family study. Asian J Androl 2016; 18:786-90. [PMID: 26486061 PMCID: PMC5000805 DOI: 10.4103/1008-682x.164923] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 04/07/2015] [Accepted: 07/22/2015] [Indexed: 11/22/2022] Open
Abstract
We conducted a community-based cross-sectional study to evaluate the role of genetics in determining the individual difference in total testosterone and sex hormone-binding globulin levels. Study participants comprised 730 Korean men consisting of 142 pairs of monozygotic twins, 191 pairs of siblings, and 259 father-offspring pairs from 270 families who participated in the Healthy Twin study. Serum concentration of total testosterone and sex hormone-binding globulin were measured by chemiluminescence immunoassay, and free testosterone and bioavailable testosterone were calculated using Vermeulen's method. Quantitative genetic analysis based on a variance decomposition model showed that the heritability of total testosterone, free testosterone, bioavailable testosterone, and sex hormone-binding globulin were 0.56, 0.45, 0.44, and 0.69, respectively after accounting for age and body mass index. Proportions of variance explained by age and body mass index varied across different traits, from 8% for total testosterone to 31% for sex hormone-binding globulin. Bivariate analysis showed a high degree of additive genetic correlation (ρG = 0.67) and a moderate degree of individual-specific environmental correlation (ρE = 0.42) between total testosterone and sex hormone-binding globulin. The findings confirmed the important role of genetics in determining the individually different levels of testosterone and sex hormone-binding globulin during adulthood in Korean men as found in non-Asian populations, which may suggest that common biologic control for determining testosterone level directly or indirectly through binding protein are largely shared among different populations.
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Affiliation(s)
- Joohon Sung
- Department of Epidemiology, School of Public Health, Seoul National University, Seoul 151-742, South Korea
- Institute of Health Environment, Seoul National University, Seoul 151-742, South Korea
| | - Yun-Mi Song
- Department of Family Medicine, Samsung Medical Center and Center for Clinical Research, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul 135-710, South Korea
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25
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Wang B, Fu ZY, Ma YT, Huang D, Liu F, Dong CL, Wang T, Meng YJ. Identification of a CYP19 Gene Single-Nucleotide Polymorphism Associated with a Reduced Risk of Coronary Heart Disease. Genet Test Mol Biomarkers 2016; 20:2-10. [PMID: 26562495 PMCID: PMC4742981 DOI: 10.1089/gtmb.2015.0157] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE An imbalance in sex hormone ratios has been identified in coronary heart disease (CHD), and as a key enzyme in the conversion of androgen to estrogen, aromatase plays an important role in the balance of sex hormone levels. However, there is a paucity of research into the potential roles of aromatase in CHD. In this study, we investigated associations between single-nucleotide polymorphisms (SNPs) in the CYP19 gene, which encodes aromatase, and CHD. METHODS We collected 1706 blood samples from CHD patients and control participants and used propensity score matching techniques to match case and control groups with respect to confounding factors. In a final study population, including 596 individuals, we conducted a case-control study to identify associations between three SNPs in CYP19 and CHD using χ(2) or Fisher exact tests, and binary logistic regression analysis. Differences in lipid levels and parameters of echocardiography among individuals with different genotypes were assessed by one-way analysis of variance. RESULTS The distributions of rs2289105 alleles in the CYP19 gene differed significantly between the CHD and control groups (p = 0.014), and the heterozygote CT genotype was associated with a significantly lower risk of CHD compared to the homozygous wild-type CC genotype (p = 0.0063 and odds ratio = 0.575). However, blood lipid levels and echocardiographic parameters among individuals with different genotypes did not differ between the CHD and control groups. CONCLUSIONS The CT genotype of the rs2289105 polymorphism in the CYP19 gene is associated with a decreased risk of CHD and may be a genetic marker of protection from CHD.
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Affiliation(s)
- Bei Wang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Xinjiang Medical University , Urumqi, China
| | - Zhen-Yan Fu
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Xinjiang Medical University , Urumqi, China
| | - Yi-Tong Ma
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Xinjiang Medical University , Urumqi, China
| | - Ding Huang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Xinjiang Medical University , Urumqi, China
| | - Fen Liu
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Xinjiang Medical University , Urumqi, China
| | - Chun-Lan Dong
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Xinjiang Medical University , Urumqi, China
| | - Ting Wang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Xinjiang Medical University , Urumqi, China
| | - Ya-Jie Meng
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Xinjiang Medical University , Urumqi, China
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26
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Rui W, Sheng Y, Hu R, Miao Y, Han Y, Guo X, Qi S, Xu F, Xu J, Yang Q. Association of Single Nucleotide Polymorphisms in the CYP19A1 Gene with Female Pattern Hair Loss in a Chinese Population. Dermatology 2015; 231:239-44. [DOI: 10.1159/000433597] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Accepted: 05/26/2015] [Indexed: 11/19/2022] Open
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Kauffman AS, Thackray VG, Ryan GE, Tolson KP, Glidewell-Kenney CA, Semaan SJ, Poling MC, Iwata N, Breen KM, Duleba AJ, Stener-Victorin E, Shimasaki S, Webster NJ, Mellon PL. A Novel Letrozole Model Recapitulates Both the Reproductive and Metabolic Phenotypes of Polycystic Ovary Syndrome in Female Mice. Biol Reprod 2015. [PMID: 26203175 DOI: 10.1095/biolreprod.115.131631] [Citation(s) in RCA: 139] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Polycystic ovary syndrome (PCOS) pathophysiology is poorly understood, due partly to lack of PCOS animal models fully recapitulating this complex disorder. Recently, a PCOS rat model using letrozole (LET), a nonsteroidal aromatase inhibitor, mimicked multiple PCOS phenotypes, including metabolic features absent in other models. Given the advantages of using genetic and transgenic mouse models, we investigated whether LET produces a similar PCOS phenotype in mice. Pubertal female C57BL/6N mice were treated for 5 wk with LET, which resulted in increased serum testosterone and normal diestrus levels of estradiol, similar to the hyperandrogenemia and follicular phase estrogen levels of PCOS women. As in PCOS, ovaries from LET mice were larger, polycystic, and lacked corpora lutea versus controls. Most LET females were acyclic, and all were infertile. LET females displayed elevated serum LH levels and higher Lhb mRNA in the pituitary. In contrast, serum FSH and Fshb were significantly reduced in LET females, demonstrating differential effects on gonadotropins, as in PCOS. Within the ovary, LET females had higher Cyp17, Cyp19, and Fsh receptor mRNA expression. In the hypothalamus, LET females had higher kisspeptin receptor mRNA expression but lower progesterone receptor mRNA levels. LET females also gained more weight than controls, had increased abdominal adiposity and adipocyte size, elevated adipose inflammatory mRNA levels, and impaired glucose tolerance, mirroring the metabolic phenotype in PCOS women. This is the first report of a LET paradigm in mice that recapitulates both reproductive and metabolic PCOS phenotypes and will be useful to genetically probe the PCOS condition.
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Affiliation(s)
- Alexander S Kauffman
- Department of Reproductive Medicine and Center for Reproductive Science and Medicine, University of California San Diego, La Jolla, California
| | - Varykina G Thackray
- Department of Reproductive Medicine and Center for Reproductive Science and Medicine, University of California San Diego, La Jolla, California
| | - Genevieve E Ryan
- Department of Reproductive Medicine and Center for Reproductive Science and Medicine, University of California San Diego, La Jolla, California
| | - Kristen P Tolson
- Department of Reproductive Medicine and Center for Reproductive Science and Medicine, University of California San Diego, La Jolla, California
| | - Christine A Glidewell-Kenney
- Department of Reproductive Medicine and Center for Reproductive Science and Medicine, University of California San Diego, La Jolla, California
| | - Sheila J Semaan
- Department of Reproductive Medicine and Center for Reproductive Science and Medicine, University of California San Diego, La Jolla, California
| | - Matthew C Poling
- Department of Reproductive Medicine and Center for Reproductive Science and Medicine, University of California San Diego, La Jolla, California
| | - Nahoko Iwata
- Department of Reproductive Medicine and Center for Reproductive Science and Medicine, University of California San Diego, La Jolla, California
| | - Kellie M Breen
- Department of Reproductive Medicine and Center for Reproductive Science and Medicine, University of California San Diego, La Jolla, California
| | - Antoni J Duleba
- Department of Reproductive Medicine and Center for Reproductive Science and Medicine, University of California San Diego, La Jolla, California
| | | | - Shunichi Shimasaki
- Department of Reproductive Medicine and Center for Reproductive Science and Medicine, University of California San Diego, La Jolla, California
| | - Nicholas J Webster
- Department of Medicine, University of California San Diego, La Jolla, California
| | - Pamela L Mellon
- Department of Reproductive Medicine and Center for Reproductive Science and Medicine, University of California San Diego, La Jolla, California
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Sun MY, Du HY, Zhu AN, Liang HY, de Garibay GR, Li FX, Li M, Yang XX. Genetic polymorphisms in estrogen-related genes and the risk of breast cancer among Han Chinese women. Int J Mol Sci 2015; 16:4121-35. [PMID: 25689428 PMCID: PMC4346947 DOI: 10.3390/ijms16024121] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 01/21/2015] [Accepted: 02/04/2015] [Indexed: 12/21/2022] Open
Abstract
Exposure to high levels of estrogen is considered an important risk factor for susceptibility to breast cancer. Common polymorphisms in genes that affect estrogen levels may be associated with breast cancer risk, but no comprehensive study has been performed among Han Chinese women. In the present study, 32 single-nucleotide polymorphisms (SNPs) in estrogen-related genes were genotyped using the MassARRAY IPLEX platform in 1076 Han Chinese women. Genotypic and allelic frequencies were compared between case and control groups. Unconditional logistic regression was used to assess the effects of SNPs on breast cancer risk. Associations were also evaluated for breast cancer subtypes stratified by estrogen receptor (ER) and progesterone receptor (PR) status. Case-control analysis showed a significant relation between heterozygous genotypes of rs700519 and rs2069522 and breast cancer risk (OR = 0.723, 95% CI = 0.541-0.965, p = 0.028 and OR = 1.500, 95% CI = 1.078-2.087, p = 0.016, respectively). Subgroup comparisons revealed that rs2446405 and rs17268974 were related to ER status, and rs130021 was associated with PR status. Our findings suggest that rs700519 and rs2069522 are associated with susceptibility to breast cancer among the Han Chinese population and have a cumulative effect with three other identified SNPs. Further genetic and functional studies are needed to identify additional SNPs, and to elucidate the underlying molecular mechanisms.
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Affiliation(s)
- Min-Ying Sun
- Guangzhou Center for Disease Control and Prevention, Guangzhou 510440, China.
| | - Hong-Yan Du
- School of Biotechnology, Southern Medical University, Guangzhou 510515, China.
| | - An-Na Zhu
- School of Biotechnology, Southern Medical University, Guangzhou 510515, China.
| | - Hui-Ying Liang
- Guangzhou Center for Disease Control and Prevention, Guangzhou 510440, China.
| | - Gorka Ruiz de Garibay
- Catalan Institute of Oncology, Bellvitge Institute for Biomedical Research, Barcelona 08908, Spain.
| | - Fen-Xia Li
- School of Biotechnology, Southern Medical University, Guangzhou 510515, China.
| | - Ming Li
- School of Biotechnology, Southern Medical University, Guangzhou 510515, China.
| | - Xue-Xi Yang
- School of Biotechnology, Southern Medical University, Guangzhou 510515, China.
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Hu YJ, Chen YZ, Zhu YM, Huang HF. Letrozole stimulation in endometrial preparation for cryopreserved-thawed embryo transfer in women with polycystic ovarian syndrome: a pilot study. Clin Endocrinol (Oxf) 2014; 80:283-9. [PMID: 23808904 DOI: 10.1111/cen.12280] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2013] [Revised: 04/02/2013] [Accepted: 06/11/2013] [Indexed: 12/21/2022]
Abstract
OBJECTIVE To study the efficiency of letrozole, an aromatase inhibitor, in endometrial preparation for cryopreserved-thawed embryo transfer (FET) in women with polycystic ovarian syndrome (PCOS). DESIGN Retrospective observational study. PATIENTS One hundred and twenty patients with PCOS who met the inclusion criteria for the study. MEASUREMENTS We assessed in vitro fertilization outcomes in one hundred and twenty patients with PCOS (148 cycles) who were prepared for and underwent FET between June 2011 and December 2012. Patients were prepared for FET using artificial hormone cycles induced with oestrogen and progesterone supplementation (n = 76), letrozole stimulation (n = 40) or hMG stimulation (n = 32). RESULTS There were no differences in demographic characteristics between the groups, except that the letrozole group had a higher incidence of embryo transfer failure in the past. The letrozole stimulation group had a significantly higher maximal endometrial thickness and significantly higher rates of clinical pregnancy per transfer, ongoing pregnancy per transfer and implantation, compared with the artificial and hMG stimulation groups. Differences in these parameters between the artificial and hMG stimulation groups were not significant. CONCLUSION Using letrozole stimulation in endometrial preparation for cryopreserved-thawed embryo transfer in patients with PCOS may be associated with better outcomes than using hormonal manipulation or hMG stimulation.
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Affiliation(s)
- Yan-Jun Hu
- Department of Reproductive Endocrinology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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Genetic polymorphisms of ESR1, ESR2, CYP17A1, and CYP19A1 and the risk of breast cancer: a case control study from North India. Tumour Biol 2014; 35:4517-27. [PMID: 24430361 DOI: 10.1007/s13277-013-1594-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 12/23/2013] [Indexed: 12/21/2022] Open
Abstract
Estrogen is a key driver of breast cancer and genes involved in its signaling and biosynthesis are crucial in breast cancer progression. In this study, we investigated the role of estrogen signaling and synthesis related genes polymorphism in susceptibility to breast cancer risk in North India population in a case-control approach. We examined the association of single nucleotide polymorphism (SNP) in estrogen receptors, ESR1 (rs2234693) and ESR2 (rs2987983); estrogen biosynthesis enzymes, CYP17A1 (rs743572); and aromatase, CYP19A1 (rs700519) with breast cancer risk. Cases (n = 360) were matched to controls (n = 360) by age, sex, ethnicity, and geographical location. Results provided evidence that all the genetic variants were significantly associated with breast cancer risk among North Indian women. Furthermore, on performing stratified analysis between breast cancer risk and different clinicopathological characteristics, we observed strong associations for menopausal status, estrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2) status, clinical stage, and histological grade. Our results suggest that these genes could be used as molecular markers to assess breast cancer susceptibility and predicting prognosis in North India population.
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31
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Dowling AR, Nedorezov LB, Qiu X, Marino JS, Hill JW. Genetic factors modulate the impact of pubertal androgen excess on insulin sensitivity and fertility. PLoS One 2013; 8:e79849. [PMID: 24278193 PMCID: PMC3835926 DOI: 10.1371/journal.pone.0079849] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Accepted: 09/25/2013] [Indexed: 01/31/2023] Open
Abstract
Polycystic ovary syndrome (PCOS) is the most common endocrine disorder of reproductive age women. The syndrome is caused by a combination of environmental influences and genetic predisposition. Despite extensive efforts, the heritable factors contributing to PCOS development are not fully understood. The objective of this study was to test the hypothesis that genetic background contributes to the development of a PCOS-like reproductive and metabolic phenotype in mice exposed to excess DHEA during the pubertal transition. We tested whether the PCOS phenotype would be more pronounced on the diabetes-prone C57BL/6 background than the previously used strain, BALB/cByJ. In addition, we examined strain-dependent upregulation of the expression of ovarian and extra-ovarian candidate genes implicated in human PCOS, genes containing known strain variants, and genes involved with steroidogenesis or insulin sensitivity. These studies show that there are significant strain-related differences in metabolic response to excess androgen exposure during puberty. Additionally, our results suggest the C57BL/6J strain provides a more robust and uniform experimental platform for PCOS research than the BALB/cByJ strain.
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Affiliation(s)
- Abigail R. Dowling
- University of Toledo Medical Center, Center for Diabetes and Endocrine Research, Department of Physiology and Pharmacology, University of Toledo Medical Center, Toledo, Ohio, United States of America
| | - Laura B. Nedorezov
- University of Toledo Medical Center, Center for Diabetes and Endocrine Research, Department of Physiology and Pharmacology, University of Toledo Medical Center, Toledo, Ohio, United States of America
| | - Xiaoliang Qiu
- University of Toledo Medical Center, Center for Diabetes and Endocrine Research, Department of Physiology and Pharmacology, University of Toledo Medical Center, Toledo, Ohio, United States of America
| | - Joseph S. Marino
- Department of Kinesiology, University of North Carolina, Charlotte, North Carolina, United States of America
| | - Jennifer W. Hill
- University of Toledo Medical Center, Center for Diabetes and Endocrine Research, Department of Physiology and Pharmacology, University of Toledo Medical Center, Toledo, Ohio, United States of America
- Dept. of Obstetrics-Gynecology, University of Toledo Medical Center, Toledo, Ohio, United States of America
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Fu L, Zhang Z, Zhang A, Xu J, Huang X, Zheng Q, Cao Y, Wang L, Du J. Association study between FSHR Ala307Thr and Ser680Asn variants and polycystic ovary syndrome (PCOS) in Northern Chinese Han women. J Assist Reprod Genet 2013; 30:717-21. [PMID: 23536150 DOI: 10.1007/s10815-013-9979-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2012] [Accepted: 03/12/2013] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Polycystic ovary syndrome (PCOS) is a common complex genetic endocrinopathy. It has high heritability, and twin studies indicate that it is a complex polygenic disorder. Searching for major genes of PCOS is crucial to clarify its molecular pathogenesis. A previous genome-wide association study in Chinese women with PCOS identified a region on chromosome 2p16.3 that encodes the follicle-stimulating hormone receptor (FSHR) genes as a reproducible PCOS susceptibility locus. In the present study, we performed a replication analysis of the association between two common variants of the FSHR gene and PCOS in Northern Chinese Han women. RESULTS We recruited 384 unrelated PCOS patients and 768 healthy individuals from the Shaanxi province in the northern part of China. Two polymorphisms (Ala307Thr and Ser680Asn) of the FSHR gene and the clinical characteristics of the study subjects were analyzed in the case-control sample. The frequency of FSHR Ala307Thr and Ser680Asn variants along with the haplotype was not significantly different between the PCOS patients and the controls; however, the Ser680 variants may be associated with high levels of FSH and low E2 levels. CONCLUSION The variant of Ser680 was not associated with PCOS but it may be related to high FSH levels. The present study suggests that the two variants of the FSHR gene are not a causative factor of PCOS in Northern Chinese Han women.
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Maliqueo M, Sun M, Johansson J, Benrick A, Labrie F, Svensson H, Lönn M, Duleba AJ, Stener-Victorin E. Continuous administration of a P450 aromatase inhibitor induces polycystic ovary syndrome with a metabolic and endocrine phenotype in female rats at adult age. Endocrinology 2013. [PMID: 23183180 DOI: 10.1210/en.2012-1693] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Studying the mechanisms for the complex pathogenesis of polycystic ovary syndrome (PCOS) requires animal models with endocrine, reproductive, and metabolic features of the syndrome. Hyperandrogenism seems to be a central factor in PCOS, leading to anovulation and insulin resistance. In female rats, continuous administration of letrozole, a nonsteroidal inhibitor of P450 aromatase, at 400 μg/d starting before puberty induces hyperandrogenemia and reproductive abnormalities similar to those in women with PCOS. However, despite high circulating testosterone levels, these rats do not develop metabolic abnormalities, perhaps because of their supraphysiological testosterone concentrations or because estrogen synthesis is completely blocked in insulin-sensitive tissues. To test the hypothesis that continuous administration of lower doses of letrozole starting before puberty would result in both metabolic and reproductive phenotypes of PCOS, we performed a 12-wk dose-response study. At 21 d of age, 46 female Wistar rats were divided into two letrozole groups (100 or 200 μg/d) and a control group (placebo). Both letrozole doses resulted in increased body weight, inguinal fat accumulation, anovulation, larger ovaries with follicular atresia and multiples cysts, endogenous hyperandrogemia, and lower estrogen levels. Moreover, rats that received 200 μg/d had insulin resistance and enlarged adipocytes in inguinal and mesenteric fat depots, increased circulating levels of LH, decreased levels of FSH, and increased ovarian expression of Cyp17a1 mRNA. Thus, continuous administration of letrozole, 200 μg/d, to female rats for 90 d starting before puberty results in a PCOS model with reproductive and metabolic features of the syndrome.
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Affiliation(s)
- Manuel Maliqueo
- Institute of Neuroscience and Physiology, Department of Physiology, Sahlgrenska Academy, Göteborg University, Box 434, SE-405 30 Göteborg, Sweden
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Cho LY, Yang JJ, Ko KP, Ma SH, Shin A, Choi BY, Han DS, Song KS, Kim YS, Chang SH, Shin HR, Kang D, Yoo KY, Park SK. Genetic susceptibility factors on genes involved in the steroid hormone biosynthesis pathway and progesterone receptor for gastric cancer risk. PLoS One 2012; 7:e47603. [PMID: 23110082 PMCID: PMC3479131 DOI: 10.1371/journal.pone.0047603] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2012] [Accepted: 09/12/2012] [Indexed: 02/07/2023] Open
Abstract
Background The objective of the study was to investigate the role of genes (HSD3B1, CYP17A1, CYP19A1, HSD17B2, HSD17B1) involved in the steroid hormone biosynthesis pathway and progesterone receptor (PGR) in the etiology of gastric cancer in a population-based two-phase genetic association study. Methods In the discovery phase, 108 candidate SNPs in the steroid hormone biosynthesis pathway related genes and PGR were analyzed in 76 gastric cancer cases and 322 controls in the Korean Multi-Center Cancer Cohort. Statistically significant SNPs identified in the discovery phase were re-evaluated in an extended set of 386 cases and 348 controls. Pooled- and meta-analyses were conducted to summarize the results. Results Of the 108 SNPs in steroid hormone biosynthesis pathway related genes and PGR analyzed in the discovery phase, 23 SNPs in PGR in the recessive model and 10 SNPs in CYP19A1 in the recessive or additive models were significantly associated with increased gastric cancer risk (p<0.05). The minor allele frequencies of the SNPs in both the discovery and extension phases were not statistically different. Pooled- and meta-analyses showed CYP19A1 rs1004982, rs16964228, and rs1902580 had an increased risk for gastric cancer (pooled OR [95% CI] = 1.22 [1.01–1.48], 1.31 [1.03–1.66], 3.03 [1.12–8.18], respectively). In contrast, all PGR SNPs were not statistically significantly associated with gastric cancer risk. Conclusions Our findings suggest CYP19A1 that codes aromatase may play an important role in the association of gastric cancer risk and be a genetic marker for gastric cancer susceptibility.
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Affiliation(s)
- Lisa Y. Cho
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Korea
- Cancer Research Institute, Seoul National University, Seoul, Korea
| | - Jae Jeong Yang
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Korea
- Cancer Research Institute, Seoul National University, Seoul, Korea
| | - Kwang-Pil Ko
- Department of Preventive Medicine, Graduate School of Medicine, Gachon University, Incheon, Korea
| | - Seung Hyun Ma
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Korea
- Cancer Research Institute, Seoul National University, Seoul, Korea
| | - Aesun Shin
- Molecular Epidemiology Branch, Research Institute, National Cancer Center, Goyang-si, Korea
| | - Bo Youl Choi
- Department of Preventive Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - Dong Soo Han
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - Kyu Sang Song
- Department of Pathology, Chungnam National University College of Medicine, Daejeon, Korea
| | - Yong Sung Kim
- Medical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - Soung-Hoon Chang
- Department of Preventive Medicine, Konkuk University, Chungju, Korea
| | - Hai-Rim Shin
- Cancer Epidemiology Branch, National Cancer Center, Goyang-si, Korea
- Non Communicable Diseases and Health Promotion, World Health Organization, Western Pacific Regional Office, Manila, Philippines
| | - Daehee Kang
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Korea
- Cancer Research Institute, Seoul National University, Seoul, Korea
- Department of Biomedical Science, Seoul National University Graduate School, Seoul, Korea
| | - Keun-Young Yoo
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Sue K. Park
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Korea
- Cancer Research Institute, Seoul National University, Seoul, Korea
- Department of Biomedical Science, Seoul National University Graduate School, Seoul, Korea
- * E-mail:
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Khvostova EP, Pustylnyak VO, Gulyaeva LF. Genetic Polymorphism of Estrogen Metabolizing Enzymes in Siberian Women with Breast Cancer. Genet Test Mol Biomarkers 2012; 16:167-73. [DOI: 10.1089/gtmb.2011.0131] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Ekaterina P. Khvostova
- Department of Molecular Mechanisms of Carcinogenesis, Institute of Molecular Biology and Biophysics, Siberian Branch of the Russian Academy of Medical Sciences, Novosibirsk, Russia
- Research Department, Novosibirsk State University, Novosibirsk, Russia
| | - Vladimir O. Pustylnyak
- Department of Molecular Mechanisms of Carcinogenesis, Institute of Molecular Biology and Biophysics, Siberian Branch of the Russian Academy of Medical Sciences, Novosibirsk, Russia
- Research Department, Novosibirsk State University, Novosibirsk, Russia
| | - Lyudmila F. Gulyaeva
- Department of Molecular Mechanisms of Carcinogenesis, Institute of Molecular Biology and Biophysics, Siberian Branch of the Russian Academy of Medical Sciences, Novosibirsk, Russia
- Research Department, Novosibirsk State University, Novosibirsk, Russia
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Clomiphene citrate versus letrozole: molecular analysis of the endometrium in women with polycystic ovary syndrome. Fertil Steril 2011; 96:1051-6. [PMID: 21851939 DOI: 10.1016/j.fertnstert.2011.07.1092] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Revised: 07/09/2011] [Accepted: 07/11/2011] [Indexed: 01/16/2023]
Abstract
OBJECTIVE To compare the effect of clomiphene citrate (CC) and letrozole on endometrial receptivity in women with polycystic ovary syndrome (PCOS). DESIGN A randomized controlled trial. SETTING University teaching hospital. PATIENT(S) Ten anovulatory women with PCOS and 5 fertile ovulatory women. INTERVENTION(S) Patients received 2.5 mg of letrozole on cycle days 3-7 (5 patients, 1 cycle) or 50 mg of CC on cycle days 5-9 (5 patients, 1 cycle). MAIN OUTCOME MEASURE(S) Serum estrogen (E) and progesterone (P) endometrial protein and messenger RNA (mRNA) expression of leukemia inhibitory factor (LIF), dickkhopf homolog 1 (DKK-1), fibroblast growth factor 22 (FGF-22), and endometrial mRNA expression of LIF/GP130 receptor (LIFR). RESULT(S) No statistically significant differences were observed between groups compared with fertile ovulatory women when serum E and P were examined, or between body mass index (BMI), and cycle day at time of biopsy. Letrozole increased mRNA expression of LIF, DKK1, LIFR, and FGF-22, whereas CC only increased endometrial mRNA expression of LIF. Letrozole mRNA expression directly translated into increased protein expression of like genes in the endometrium. The CC protein expression of DKK-1 was significantly decreased compared with controls. CONCLUSION(S) Letrozole positively influences a number of markers of endometrial receptivity compared with CC.
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