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Aldeli N, Soukkarie C, Hanano A. Transcriptional, hormonal and histological alterations in the ovaries of BALB/c mice exposed to TCDD in connection with multigenerational female infertility. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 258:114990. [PMID: 37156038 DOI: 10.1016/j.ecoenv.2023.114990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 05/01/2023] [Accepted: 05/04/2023] [Indexed: 05/10/2023]
Abstract
2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), the most toxic congener of dioxins, has a proven reproductive toxicity. Due to the lack of evidence on the multigenerational female reproductive toxicity of TCDD through the maternal exposure, the current study aims to evaluate, on the one hand, the acute reproductive toxicity of TCDD on adult female pre-gestational exposed to a critical single dose of TCDD (25 μg/kg) for a week (group referred to as AFnG; adult female/non-gestation). On the other hand, the transcription, hormonal and histological effects of TCDD on the females of two generations F1 and F2, were also investigated after the exposure of pregnant females to TCDD on gestational day 13 (GD13) (group referred to as AFG; adult female/gestation). First, our data showed alternations in the ovarian expressional pattern of certain key genes involved in the detoxification of TCDD as well as in the biosynthesis of steroidal hormones. The expression of Cyp1a1 was highly induced in TCDD-AFnG group, but reduced in both F1 and F2. While the transcripts levels of Cyp11a1 and 3βhsd2 were decreased, Cyp19a1 transcripts were increased as a function of TCDD exposure. This was synchronized with a dramatic increase in the level of estradiol hormone in the females of both experimental groups. Beside a significant reduce in their size and weight, ovaries of TCDD-exposed females showed serious histological alterations marked by atrophy of the ovary, congestion in the blood vessels, necrosis in the layer of granular cells, dissolution of the oocyte and nucleus of ovarian follicles. Finally, the female fertility was dramatically affected across generations with a reduced male\female ratio. Our data indicate that the exposure of pregnant female to TCDD has serious negative effects in the female productive system across generations and suggest the use of hormonal alternation as biomarker to monitor and assess the indirect exposure of these generations to TCDD.
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Affiliation(s)
- Nour Aldeli
- Department of Animal Biology, Faculty of Sciences, University of Damascus, Damascus, Syria
| | - Chadi Soukkarie
- Department of Animal Biology, Faculty of Sciences, University of Damascus, Damascus, Syria
| | - Abdulsamie Hanano
- Department of Molecular Biology and Biotechnology, Atomic Energy Commission of Syria (AECS), Damascus, Syria.
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Fan W, Huang Z, Chen Q. The estrogen receptor polymorphisms and controlled ovulation hyperstimulation outcomes: a meta-analysis. Gynecol Endocrinol 2022; 38:1060-1067. [PMID: 36427511 DOI: 10.1080/09513590.2022.2149729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Objective: Several studies evaluated the relationship between estrogen receptor (ER) polymorphisms and the outcomes of controlled ovulation hyperstimulation (COH). However, the results remained obscure. The objective of this study was to perform a meta-analysis to investigate the links between ER polymorphisms and COH outcomes.Methods: Eligible studies were identified from the following electronic databases: PubMed, Embase and the Chinese CNKI till Nov. 2021. The odds ratio (OR) and 95% confidence intervals (CIs) for dichotomous data and the weighted mean difference (WMD) with 95% confidence intervals (CIs) for continuous variables were used to calculate correlations between ER polymorphisms and COH outcomes. Based on the inclusion and exclusion criteria, a total of thirteen papers were eventually enrolled in the current meta-analysis.Results: The following were the key findings of this meta-analysis: (1) PvuII polymorphism had a significant relationship with IVF pregnancy outcome in all models, except the recessive model(CC VS TT: OR, 5.51, 95% CI, 1.13,26.84; CC + CT VS TT: OR, 3.73, 95% CI, 1.21,11.57; CT VS TT: OR, 3.19, 95% CI, 1.11,9.16;C VS T: OR, 2.19, 95% CI, 1.15, 4.19), with large or extreme heterogeneity; (2) XbaI polymorphism had a significant association with IVF risk in heterozygous and dominant models(AG VS GG: OR, 0.27, 95% CI, 0.12,0.61; AAAG VS GG: OR, 0.27, 95% CI, 0.12,0.59), with no heterogeneity; (3) (TA)n polymorphism was linked with IVF risk in the homozygous and recessive models(LL VS SS:OR = 3.74, 95%CI = 1.53,9.12;LL VS LS + SS:OR = 2.75, 95%CI = 1.18, 6.38), with no heterogeneity; (4) for Alul polymorphism and its association with POR risk, significant relationship was observed in the recessive model(AA VS AG + GG:OR = 2.27, 95%CI = 1.46, 3.54), with no heterogeneity;(5) PvuII T/C mutation did not predict the follicle number, oocyte number, ratio of follicles to oocytes and the risk of IVF;(6) for XbaI polymorphism and pregnancy outcome of IVF, no significant association was observed under all models; and (7) RsaI polymorphism does not increase the risk of POR under all models.Conclusion: In summary, our meta-analysis found evidence supporting that PvuII polymorphism may serve as a marker in predicting pregnancy rate in IVF-ET, XbaI and (TA)n polymorphisms may be related with infertility, and Alul polymorphism may predict the poor ovarian response to COH. More well-designed investigations are warranted to corroborate these findings.
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Affiliation(s)
- Wei Fan
- Gynecology and obstetrics of West China 2nd University Hospital, Key Laboratory of Birth Defects and Related Diseases of women and Children, Ministry of Education, Sichuan University, Chengdu, Sichuan, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China
| | - Zhongying Huang
- Gynecology and obstetrics of West China 2nd University Hospital, Key Laboratory of Birth Defects and Related Diseases of women and Children, Ministry of Education, Sichuan University, Chengdu, Sichuan, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China
| | - Qiong Chen
- Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China
- Neonatal Department of West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
- Nursing Department of West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
- West China School of Nursing, Sichuan University, Chengdu, Sichuan, China
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A Review on CYP11A1, CYP17A1, and CYP19A1 Polymorphism Studies: Candidate Susceptibility Genes for Polycystic Ovary Syndrome (PCOS) and Infertility. Genes (Basel) 2022; 13:genes13020302. [PMID: 35205347 PMCID: PMC8871850 DOI: 10.3390/genes13020302] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/23/2022] [Accepted: 01/25/2022] [Indexed: 11/17/2022] Open
Abstract
Polycystic ovary syndrome is a multifactorial condition associated with reproductive and endocrine organs and might cause infertility and metabolic abnormalities in childbearing age. PCOS seems to be a multifactorial disorder resulting from the combination of several genetic and environmental factors. Little research has been conducted to date on the impact of polymorphisms in infertility. We aim to review the appearance of polymorphisms in females of diverse ethnicities and their effect on infertility in the population with polycystic ovary syndrome. There have been numerous reports of the importance of the steroidogenesis pathway and genetic variants in PCOS pathogenesis. The most important genes that play a role in the aetiology of PCOS are CYP11A1, CYP17A1, and CYP19A1. We evaluated the occurrence of polymorphisms in various ethnicities in the CYP11A1, CYP17A1, and CYP19A1 genes and their efficacy on increasing PCOS risk with infertility. Our findings revealed that polymorphisms in various ethnicities are associated with the risk of PCOS with infertility. Although conflicting results regarding CYP11A1, CYP17A1, and CYP19A1 polymorphisms and their influence on PCOS with infertility have been reported in a small number of papers, the authors feel this may be attributable to the sample size and ethnic composition of the examined populations. In conclusion, our study strongly suggests that the CYP11A1, CYP17A1, and CYP19A1 genes might significantly enhance the probability of developing PCOS with infertility.
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Akça KT, Demirel MA, Süntar I. The Role of Aromatase Enzyme in Hormone Related Diseases and Plant-Based Aromatase Inhibitors as Therapeutic Regimens. Curr Top Med Chem 2021; 22:229-246. [PMID: 34844542 DOI: 10.2174/1568026621666211129141631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 10/17/2021] [Accepted: 10/31/2021] [Indexed: 11/22/2022]
Abstract
Medicinal plants have a long history of use as food and remedy in traditional and modern societies, as well as have been used as herbal drugs and sources of novel bioactive compounds. They provide a wide array of chemical compounds, many of which can not be synthesized via current synthesis methods. Natural products may provide aromatase inhibitory activity through various pathways and may act clinically effective for treating pathologies associated with excessive aromatase secretion including breast, ovarian and endometrial cancers, endometriosis, uterine fibroid, benign prostatic hyperplasia (BPH), prostate cancer, infertility, and gynecomastia. Recent studies have shown that natural products with aromatase inhibitory activity, could also be good options against secondary recurrence of breast cancer by exhibiting chemopreventive effects. Therefore, screening for new plant-based aromatase inhibitors may provide novel leads for drug discovery and development, particularly with increased clinical efficacy and decreased side effects.
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Affiliation(s)
- Kevser Taban Akça
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330, Etiler, Ankara. Turkey
| | - Murside Ayşe Demirel
- Department of Basic Pharmaceutical Sciences, Laboratory Animals Breeding and Experimental Research Center, Gazi University, Faculty of Pharmacy, 06330, Etiler, Ankara. Turkey
| | - Ipek Süntar
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330, Etiler, Ankara. Turkey
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Noviyanti N, Yueniwati Y, Rahardjo B, Mintaroem K, Khristian E. The New Detection Method of Ovarian Follicle Development Using Digitized Wide Area Measurement. Open Access Maced J Med Sci 2021. [DOI: 10.3889/oamjms.2021.6122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
METHODS: The research method used in this research was experimental laboratory with pre-and posttest only control group design.
RESULTS: The result shows that the extradiol level which has range of 26.30–31.03 from 28 experimental animals measured, this showed more measurement diameter which has not had measurement addition compare with the wide percentage of measurement. The result shows strong correlation between digitalized measured wide follicles to the changing of estradiol level with value of 0.453. The result of comparation between estradiol level and measured diameter shows weak correlation. This shows that manual measurement of follicle diameter still weak to the changing of estradiol level.
CONCLUSION: There is strong correlation between measured wide area follicle used ImageJ applications to the changing of estradiol level compare to the measurement of follicle diameter.
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Brandies PA, Wright BR, Hogg CJ, Grueber CE, Belov K. Characterization of reproductive gene diversity in the endangered Tasmanian devil. Mol Ecol Resour 2020; 21:721-732. [PMID: 33188658 DOI: 10.1111/1755-0998.13295] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/25/2020] [Accepted: 11/05/2020] [Indexed: 01/11/2023]
Abstract
Interindividual variation at genes known to play a role in reproduction may impact reproductive fitness. The Tasmanian devil is an endangered Australian marsupial with low genetic diversity. Recent work has shown concerning declines in productivity in both wild and captive populations over time. Understanding whether functional diversity exists at reproductive genes in the Tasmanian devil is a key first step in identifying genes that may influence productivity. We characterized single nucleotide polymorphisms (SNPs) at 214 genes involved in reproduction in 37 Tasmanian devils. Twenty genes contained nonsynonymous substitutions, with genes involved in embryogenesis, fertilization and hormonal regulation of reproduction displaying greater numbers of nonsynonymous SNPs than synonymous SNPs. Two genes, ADAMTS9 and NANOG, showed putative signatures of balancing selection indicating that natural selection is maintaining diversity at these genes despite the species exhibiting low overall levels of genetic diversity. We will use this information in future to examine the interplay between reproductive gene variation and reproductive fitness in Tasmanian devil populations.
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Affiliation(s)
- Parice A Brandies
- School of Life and Environmental Sciences, Faculty of Science, University of Sydney, Sydney, NSW, Australia
| | - Belinda R Wright
- School of Life and Environmental Sciences, Faculty of Science, University of Sydney, Sydney, NSW, Australia
| | - Carolyn J Hogg
- School of Life and Environmental Sciences, Faculty of Science, University of Sydney, Sydney, NSW, Australia
| | - Catherine E Grueber
- School of Life and Environmental Sciences, Faculty of Science, University of Sydney, Sydney, NSW, Australia.,San Diego Zoo Global, San Diego, CA, USA
| | - Katherine Belov
- School of Life and Environmental Sciences, Faculty of Science, University of Sydney, Sydney, NSW, Australia
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Vergaro P, Tiscornia G, Zambelli F, Rodríguez A, Santaló J, Vassena R. Trophoblast attachment to the endometrial epithelium elicits compartment-specific transcriptional waves in an in-vitro model. Reprod Biomed Online 2020; 42:26-38. [PMID: 33051136 DOI: 10.1016/j.rbmo.2020.08.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 08/14/2020] [Accepted: 08/23/2020] [Indexed: 01/02/2023]
Abstract
RESEARCH QUESTION Which are the early compartment-specific transcriptional responses of the trophoblast and the endometrial epithelium throughout early attachment during implantation? DESIGN An endometrial epithelium proxy (cell line Ishikawa) was co-cultured with spheroids of a green fluorescent protein (GFP) expressing trophoblast cell line (JEG-3). After 0, 8 and 24 h of co-culture, the compartments were sorted by fluorescence-activated cell sorting; GFP+ (trophoblast), GFP- (epithelium) and non-co-cultured control populations were analysed (in triplicate) by RNA-seq and gene set enrichment analysis (GSEA). RESULTS Trophoblast challenge induced a wave of transcriptional changes in the epithelium that resulted in 295 differentially regulated genes involving epithelial to mesenchymal transition (EMT), cell movement, apoptosis, hypoxia, inflammation, allograft rejection, myogenesis and cell signalling at 8 h. Interestingly, many of the enriched pathways were subsequently de-enriched by 24 h (i.e. EMT, cell movement, allograft rejection, myogenesis and cell signalling). In the trophoblast, the co-culture induced more transcriptional changes and regulation of a variety of pathways. A total of 1247 and 481 genes were differentially expressed after 8 h and from 8 to 24 h, respectively. Angiogenesis and hypoxia were over-represented at both stages, while EMT and cell signalling only were at 8 h; from 8 to 24 h, inflammation and oestrogen response were enriched, while proliferation was under-represented. CONCLUSIONS Successful attachment produced a series of dynamic changes in gene expression, characterized by an overall early and transient transcriptional up-regulation in the receptive epithelium, in contrast to a more dynamic transcriptional response in the trophoblast.
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Affiliation(s)
- Paula Vergaro
- Clínica EUGIN Barcelona, Spain; Facultat de Biociències, Unitat de Biologia Cel•lular, Universitat Autònoma de Barcelona, Spain
| | - Gustavo Tiscornia
- Clínica EUGIN Barcelona, Spain; Centro de Investigação em Biomedicina (CBMR), Universidade do Algarve, Portugal
| | | | | | - Josep Santaló
- Facultat de Biociències, Unitat de Biologia Cel•lular, Universitat Autònoma de Barcelona, Spain
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8
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The relevance of the individual screening for genetic variants in predicting ovarian response. Pharmacogenet Genomics 2019; 29:216-223. [DOI: 10.1097/fpc.0000000000000386] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Sequence variants in FSHR and CYP19A1 genes and the ovarian response to controlled ovarian stimulation. Fertil Steril 2019; 112:749-757.e2. [PMID: 31371045 DOI: 10.1016/j.fertnstert.2019.05.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 04/19/2019] [Accepted: 05/15/2019] [Indexed: 02/06/2023]
Abstract
OBJECTIVE To examine whether sequence variants within the FSHR and CYP19A1 genes are related to the ovarian response to controlled ovarian stimulation (COS). DESIGN Genetic association study using both single-gene and combined analyses of women with sequence variants undergoing in vitro fertilization treatment. SETTING Academic research institute hospital. PATIENT(S) Seven hundred and five women undergoing ovarian stimulation with recombinant follicle-stimulating hormone (FSH). INTERVENTION(S) Peripheral blood extraction, DNA purification, and FSHR c.919G>A (rs6165, p.Thr307Ala) and CYP19A1 c.*19C>T (rs10046) sequence variants analyses. MAIN OUTCOME MEASURE(S) Single-gene statistical analysis and combined statistical analysis with the SPSS17.0 software; FSHR c.919G>A and CYP19A1 c.*19C>T sequence variant genotypes and clinical parameters related to the COS response as oocyte retrieval and hormone levels, doses of exogenous FSH. RESULT(S) Women with genotype Ala/Ala at FSHR position 307 had higher basal levels of FSH and were more likely to have a low ovarian response compared with other genotypes. Women with genotype TT at CYP19A1 yielded fewer oocytes after ovarian stimulation. The combined analysis of these two sequence variants revealed that these two single-nucleotide variants have a synergistic effect in conferring the risk of a low ovarian response. CONCLUSION(S) Our results support an association of sequence variants in the genes that participate in estrogen synthesis, notably the FSHR and CYP19A1 genes, with the outcome of COS.
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Amaro A, Polerá D, Figueiredo FWDS, Bianco B, Christofolini DM, Barbosa CP. The Impact of Variants in Genes Associated with Estradiol Synthesis on Hormone Levels and Oocyte Retrieval in Patients Who Underwent Controlled Ovarian Hyperstimulation. Genet Test Mol Biomarkers 2019; 23:145-149. [PMID: 30688541 DOI: 10.1089/gtmb.2018.0205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
AIMS To correlate differences in estradiol levels in serum and follicular fluid with genetic variants and to determine if they play a role in the results following assisted reproductive technology (ART). PATIENTS AND METHODS A cross-sectional study was developed at the Ideia Fértil Institute of Reproductive Health. Two hundred two female patients were selected and underwent controlled ovarian hyperstimulation cycles. Patients for this study were chosen based on their male partners' infertility. Genotypes of selected variants of CYP19A1, CYP17A1, HSD17, and COMT were compared to the estradiol measurements from follicular fluid and serum, as well as to the number and maturation status of the oocytes retrieved. RESULTS Patients with the variant homozygous genotype AA of CYP19A1 (rs10046) showed increased serum concentrations of estradiol when compared to patients with other genotypes (p = 0.005). The same polymorphism effect was not observed in follicular fluid. This CYP19A1 variant did not affect the number of oocytes recovered nor their maturation level. CONCLUSION The CYP19A1 variant is associated with an estradiol imbalance in serum. Other pathways, however, may contribute to the formation of the final estradiol metabolite in follicular fluid as well as its impact on the oocyte maturation.
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Affiliation(s)
- Aline Amaro
- 1 Institute Ideia Fértil of Reproductive Health, Santo André, Brazil
| | - Daniela Polerá
- 1 Institute Ideia Fértil of Reproductive Health, Santo André, Brazil
| | | | - Bianca Bianco
- 1 Institute Ideia Fértil of Reproductive Health, Santo André, Brazil.,2 Collective Health Department, Reproductive Health and Population Genetics Discipline, Faculdade de Medicina do ABC, Santo André, Brazil
| | - Denise Maria Christofolini
- 1 Institute Ideia Fértil of Reproductive Health, Santo André, Brazil.,2 Collective Health Department, Reproductive Health and Population Genetics Discipline, Faculdade de Medicina do ABC, Santo André, Brazil
| | - Caio Parente Barbosa
- 1 Institute Ideia Fértil of Reproductive Health, Santo André, Brazil.,2 Collective Health Department, Reproductive Health and Population Genetics Discipline, Faculdade de Medicina do ABC, Santo André, Brazil
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Kalinderi K, Asimakopoulos B, Nikolettos N, Manolopoulos VG. Pharmacogenomics in IVF: A New Era in the Concept of Personalized Medicine. Reprod Sci 2018; 26:1313-1325. [PMID: 29587614 DOI: 10.1177/1933719118765970] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Pharmacogenomics is a promising approach in the field of individualized medicine in in vitro fertilization (IVF) treatment that aims to develop optimized pharmacotherapy depending on the genetic background of each infertile woman, thus to ensure maximum effectiveness of the medication used, with minimal side effects. The unique genetic information of each infertile woman, in combination with already known, as well as new predictors of ovarian response and the progress of pharmacoepigenomics, is anticipated to greatly benefit the process of controlled ovarian stimulation. This review analyses current data on IVF pharmacogenomics, a new approach that is gradually moving to the frontline of modern IVF treatment.
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Affiliation(s)
- Kallirhoe Kalinderi
- Department of General Biology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece.,3rd Department of Obstetrics and Gynaecology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Byron Asimakopoulos
- Laboratory of Physiology, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Nikos Nikolettos
- Laboratory of Reproductive Physiology-In Vitro Fertilization, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Vangelis G Manolopoulos
- Laboratory of Pharmacology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
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Harreiter J, Kautzky-Willer A. [Gender Obesity Report--Influence of obesity on Reproduction and Pregnancy]. Wien Med Wochenschr 2015; 166:129-38. [PMID: 26650059 DOI: 10.1007/s10354-015-0410-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Accepted: 11/24/2015] [Indexed: 02/06/2023]
Abstract
Obesity influences reproduction in men and women at all ages. The increasing prevalence of obesity is associated with rising numbers of reproductive disorders in both sexes. Obesity influences menstrual cycle and ovulation irregularities, increases pregnancy complications and complication rates in assisted reproductive technologies in women and in men obesity is associated with lower semen parameters. Weight loss through lifestyle changes or bariatric surgery has positive effects on hormonal parameters and fertility in both men and women.
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Affiliation(s)
- Jürgen Harreiter
- Universitätsklinik für Innere Medizin III, Endokrinologie und Stoffwechsel, Gender Medicine Unit, Medizinische Universität Wien, Währinger Gürtel 18-20, 1090, Wien, Österreich.
| | - Alexandra Kautzky-Willer
- Universitätsklinik für Innere Medizin III, Endokrinologie und Stoffwechsel, Gender Medicine Unit, Medizinische Universität Wien, Währinger Gürtel 18-20, 1090, Wien, Österreich
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13
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Laisk-Podar T, Kaart T, Peters M, Salumets A. Genetic variants associated with female reproductive ageing – potential markers for assessing ovarian function and ovarian stimulation outcome. Reprod Biomed Online 2015; 31:199-209. [DOI: 10.1016/j.rbmo.2015.05.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 02/19/2015] [Accepted: 05/06/2015] [Indexed: 10/23/2022]
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Aghajanova L, Mahadevan S, Altmäe S, Stavreus-Evers A, Regan L, Sebire N, Dixon P, Fisher RA, Van den Veyver IB. No evidence for mutations in NLRP7, NLRP2 or KHDC3L in women with unexplained recurrent pregnancy loss or infertility. Hum Reprod 2014; 30:232-8. [PMID: 25376457 DOI: 10.1093/humrep/deu296] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
STUDY QUESTION Are mutations in NLRP2/7 (NACHT, LRR and PYD domains-containing protein 2/7) or KHDC3L (KH Domain Containing 3 Like) associated with recurrent pregnancy loss (RPL) or infertility? SUMMARY ANSWER We found no evidence for mutations in NLRP2/7 or KHDC3L in unexplained RPL or infertility. WHAT IS KNOWN ALREADY Mutations in NLRP7 and KHDC3L are known to cause biparental hydatidiform moles (BiHMs), a rare form of pregnancy loss. NLRP2, while not associated with the BiHM pathology, is known to cause recurrent Beckwith Weidemann Syndrome (BWS). STUDY DESIGN, SIZE, AND DURATION Ninety-four patients with well characterized, unexplained infertility were recruited over a 9-year period from three IVF clinics in Sweden. Blood samples from 24 patients with 3 or more consecutive miscarriages of unknown etiology were provided by the Recurrent Miscarriage Clinic at St Mary's Hospital, London, UK. PARTICIPANTS/MATERIALS, SETTING, METHODS Patients were recruited into both cohorts following extensive clinical studies. Genomic DNA was isolated from peripheral blood and subject to Sanger sequencing of NLRP2, NLRP7 and KHDC3L. Sequence electropherograms were analyzed by Sequencher v5.0 software and variants compared with those observed in the 1000 Genomes, single nucleotide polymorphism database (dbSNP) and HapMap databases. Functional effects of non-synonymous variants were predicted using Polyphen-2 and sorting intolerant from tolerant (SIFT). MAIN RESULTS AND THE ROLE OF CHANCE No disease-causing mutations were identified in NLRP2, NLRP7 and KHDC3L in our cohorts of unexplained infertility and RPL. LIMITATIONS, REASONS FOR CAUTION Due to the limited patient size, it is difficult to conclude if the low frequency single nucleotide polymorphisms observed in the present study are causative of the phenotype. The design of the present study therefore is only capable of detecting highly penetrant mutations. WIDER IMPLICATIONS OF THE FINDINGS The present study supports the hypothesis that mutations in NLRP7 and KHDC3L are specific for the BiHM phenotype and do not play a role in other adverse reproductive outcomes. Furthermore, to date, mutations in NLRP2 have only been associated with the imprinting disorder BWS in offspring and there is no evidence for a role in molar pregnancies, RPL or unexplained infertility. STUDY FUNDING/COMPETING INTERESTS This study was funded by the following sources: Estonian Ministry of Education and Research (Grant SF0180044s09), Enterprise Estonia (Grant EU30020); Mentored Resident research project (Department of Obstetrics and Gynecology, Baylor College of Medicine); Imperial NIHR Biomedical Research Centre; Grant Number C06RR029965 from the National Center for Research Resources (NCCR; NIH). No competing interests declared.
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Affiliation(s)
- L Aghajanova
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California San Francisco, San Francisco, CA 94143, USA
| | - S Mahadevan
- Interdepartmental Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, TX 77030, USA Department of Obstetrics and Gynecology, One Baylor Plaza, Mailstop BCM610, Baylor College of Medicine, Houston, TX 77030, USA Jan and Dan Duncan Neurological Research Institute at Texas Children's Hospital, Houston, TX 77030, USA
| | - S Altmäe
- Competence Centre on Reproductive Medicine and Biology, Tartu 50410, Estonia
| | - A Stavreus-Evers
- Department of Women's and Children's Health, Uppsala University, Uppsala 75105, Sweden
| | - L Regan
- Department of Obstetrics and Gynaecology, St Mary's Campus, Imperial College London, London W2 1PG, UK
| | - N Sebire
- Paediatric and Developmental Pathology, Institute of Child Health/Great Ormond Street Hospital, London WC1N 1EH, UK
| | - P Dixon
- Division of Women's Health, King's College London, Guy's Campus, London SE1 1UL, UK
| | - R A Fisher
- Trophoblastic Tumour Screening and Treatment Centre, Charing Cross Campus, Imperial College London, London W6 8RF, UK
| | - I B Van den Veyver
- Interdepartmental Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, TX 77030, USA Department of Obstetrics and Gynecology, One Baylor Plaza, Mailstop BCM610, Baylor College of Medicine, Houston, TX 77030, USA Jan and Dan Duncan Neurological Research Institute at Texas Children's Hospital, Houston, TX 77030, USA Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
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Brodowska A, Brodowski J, Laszczyńska M, Słuczanowska-Głąbowska S, Rumianowski B, Rotter I, Starczewski A, Ratajczak MZ. Immunoexpression of aromatase cytochrome P450 and 17β-hydroxysteroid dehydrogenase in women's ovaries after menopause. J Ovarian Res 2014; 7:52. [PMID: 24855493 PMCID: PMC4030461 DOI: 10.1186/1757-2215-7-52] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Accepted: 05/05/2014] [Indexed: 11/25/2022] Open
Abstract
Background Menopause results in a lack of regular menstrual cycles, leading to the reduction of estrogen production. On the other hand, ovarian androgen synthesis is still present at reduced levels and requires expression of several steroidogenic enzymes. Methods This study was performed on 104 postmenopausal women hospitalized due to uterine leiomyomas, endometriosis, and/or a prolapsed uterus. Patients were divided into three groups depending on the time from menopause. Group A patients experienced menopause 1–5 years before enrollment in the study (42 women). Group B included women who had their last menstruation 5–10 years before the study (40 women). Group C consisted of 22 women who were more than 10 years past menopause. Hysterectomy or removal of the uterine corpus with adnexa was performed during laparotomy. We evaluated the expression of aromatase cytochrome P450 (CYP 19) and 17β-hydroxysteroid dehydrogenase (17β HSD) by employing immunohistochemistry. Results Activity of 17β-HSD and CYP19 was demonstrated in the cytoplasm of stromal cells of postmenopausal ovaries, epithelium cells coating the ovaries, vascular endothelial cells, and epithelial inclusion cysts. However, overall expression of both 17β-HSD and CYP 19 decreased with time after menopause. Conclusion Demonstration of the activity of the key enzymes of ovarian steroidogenesis, CYP 19 and 17β-HSD, confirms steroidogenic activity in the ovaries of postmenopausal women. Nevertheless, ovarian steroidogenic activity decreases with time, and its significant decrease occurs 10 years after menopause.
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Affiliation(s)
- Agnieszka Brodowska
- Department of Gynaecology and Urogynaecology, Pomeranian Medical University, Siedlecka 2, 72 - 010 Police, Poland
| | - Jacek Brodowski
- Laboratory of Primary Health Care, Pomeranian Medical University, Żołnierska 48, 71-210 Szczecin, Poland
| | - Maria Laszczyńska
- Department of Histology and Developmental Biology, Pomeranian Medical University, Żołnierska 48, 71-210 Szczecin, Poland
| | | | - Bogdan Rumianowski
- Department of Histology and Developmental Biology, Pomeranian Medical University, Żołnierska 48, 71-210 Szczecin, Poland
| | - Iwona Rotter
- Laboratory of Medical Rehabilitation, Pomeranian Medical University, Grudziądzka 31, 70-103 Szczecin, Poland
| | - Andrzej Starczewski
- Department of Gynaecology and Urogynaecology, Pomeranian Medical University, Siedlecka 2, 72 - 010 Police, Poland
| | - Mariusz Z Ratajczak
- Department of Physiology Pomeranian Medical University, Powstańców Wielkopolskich 72, 70-111 Szczecin, Poland ; Stem Cell Biology Program, James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA
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O’Brien TJ, Kalmin MM, Harralson AF, Clark AM, Gindoff I, Simmens SJ, Frankfurter D, Gindoff P. Association between the luteinizing hormone/chorionic gonadotropin receptor (LHCGR) rs4073366 polymorphism and ovarian hyperstimulation syndrome during controlled ovarian hyperstimulation. Reprod Biol Endocrinol 2013; 11:71. [PMID: 23883350 PMCID: PMC3727944 DOI: 10.1186/1477-7827-11-71] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Accepted: 07/22/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The aim of this study was to determine the relationship between a purported luteinizing hormone/chorionic gonadotropin (LHCGR) high function polymorphism (rs4539842/insLQ) and outcome to controlled ovarian hyperstimulation (COH). METHODS This was a prospective study of 172 patients undergoing COH at the Fertility and IVF Center at GWU. DNA was isolated from blood samples and a region encompassing the insLQ polymorphism was sequenced. We also investigated a polymorphism (rs4073366 G > C) that was 142 bp from insLQ. The association of the insLQ and rs4073366 alleles and outcome to COH (number of mature follicles, estradiol level on day of human chorionic gonadotropin (hCG) administration, the number of eggs retrieved and ovarian hyperstimulation syndrome (OHSS)) was determined. RESULTS Increasing age and higher day 3 (basal) FSH levels were significantly associated with poorer response to COH. We found that both insLQ and rs4073366 were in linkage disequilibrium (LD) and no patients were homozygous for both recessive alleles (insLQ/insLQ; C/C). The insLQ variant was not significantly associated with any of the main outcomes to COH. Carrier status for the rs4073366 C variant was associated (P = 0.033) with an increased risk (OR 2.95, 95% CI = 1.09-7.96) of developing OHSS. CONCLUSIONS While age and day 3 FSH levels were predictive of outcome, we found no association between insLQ and patient response to COH. Interestingly, rs4073366 C variant carrier status was associated with OHSS risk. To the best of our knowledge, this is the first report suggesting that LHCGR genetic variation might function in patient risk for OHSS.
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Affiliation(s)
- Travis J O’Brien
- Department of Pharmacology and Physiology, The George Washington University, Washington, DC, USA
| | - Mariah M Kalmin
- Department of Epidemiology and Biostatistics, The George Washington University, Washington, DC, USA
| | - Arthur F Harralson
- Department of Pharmacogenomics, Bernard J. Dunn School of Pharmacy, Shenandoah University, Ashburn, VA, USA
| | - Adam M Clark
- Department of Pharmacology and Physiology, The George Washington University, Washington, DC, USA
| | - Ian Gindoff
- Department of Pharmacology and Physiology, The George Washington University, Washington, DC, USA
| | - Samuel J Simmens
- Department of Epidemiology and Biostatistics, The George Washington University, Washington, DC, USA
| | - David Frankfurter
- Department of Obstetrics and Gynecology, The George Washington University, Washington, DC, USA
| | - Paul Gindoff
- Department of Obstetrics and Gynecology, The George Washington University, Washington, DC, USA
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Lazaros L, Xita N, Hatzi E, Takenaka A, Kaponis A, Makrydimas G, Sofikitis N, Stefos T, Zikopoulos K, Georgiou I. CYP19 gene variants affect the assisted reproduction outcome of women with polycystic ovary syndrome. Gynecol Endocrinol 2013; 29:478-82. [PMID: 23461365 DOI: 10.3109/09513590.2013.774359] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE Cytochrome P450 aromatase catalyzes the irreversible transformation of androgens into estrogens. The association of CYP19(TTTA)n polymorphism with the hormonal profile and the assisted reproduction outcome of women with polycystic ovary syndrome (PCOS) was explored. METHODS One hundred and thirty-two women with PCOS and 200 with male-factor infertility, as controls, participated in the current study. The CYP19(TTTA)n polymorphism was genotyped, while the hormonal profile was determined at the third day of the menstrual cycle. During oocyte retrieval, the follicular size, the follicle and oocyte numbers were recorded. RESULTS Genotype analysis revealed 6 CYP19(TTTA)n alleles with 7-12 repeats. In PCOS women, the CYP19(TTTA)7 allele presence was associated with lower serum E2 levels at the third day of the menstrual cycle (p < 0.009), lower large follicle (p < 0.02) and total oocyte numbers (p = 0.006), but with significantly higher pregnancy rates after assisted reproduction (p < 0.004). CONCLUSIONS Potential associations of the CYP19(TTTA)7 allele with ovarian response to standard gonadotrophin stimulation and with assisted reproduction outcome were found in PCOS women, probably due to androgen/estrogen ratio alterations.
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Affiliation(s)
- Leandros Lazaros
- Department of Obstetrics and Gynecology, Medical School, Ioannina University, Ioannina, Greece
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Lazaros LA, Hatzi EG, Pamporaki CE, Sakaloglou PI, Xita NV, Markoula SI, Stefos TI, Zikopoulos KA, Georgiou IA. The ovarian response to standard gonadotrophin stimulation depends on FSHR, SHBG and CYP19 gene synergism. J Assist Reprod Genet 2012; 29:1185-91. [PMID: 22915343 PMCID: PMC3510364 DOI: 10.1007/s10815-012-9849-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Accepted: 08/08/2012] [Indexed: 11/30/2022] Open
Abstract
PURPOSE Follicle stimulating hormone, sex hormone-binding globulin and cytochrome P450 aromatase play crucial roles in the regulation of mammalian reproduction. The synergistic effect of FSHR 307(T/A)/FSHR 680(N/S), SHBG(TAAAA) ( n ) and CYP19(TTTA) ( n ) genotypes on ovarian response to standard gonadotrophin stimulation of women undergoing medically assisted reproduction (IVF/ICSI) was explored. METHODS The study population consisted of 300 women under IVF/ICSI treatment and 300 women with at least with at least one successful child birth as controls. The polymorphisms were genotyped while the follicular size, the follicle and oocyte numbers were recorded during oocyte retrieval. RESULTS The genotype analysis, excluding heterozygotes for each particular polymorphism, revealed eight combined homozygotic FSHR/SHBG/CYP19 genotypes. A gradual reduction in the number of follicles and oocytes from FSHR 307Thr/680Asn allele/long SHBG allele/long CYP19 allele homozygotes to FSHR 307Ala/680Ser allele/short SHBG allele/short CYP19 allele homozygotes was observed (20.36 ± 6.74 vs. 8.05 ± 2.47, p < 0.008 and 13 ± 4.63 vs. 6.1 ± 2.32, p < 0.02, respectively). CONCLUSIONS FSHR/SHBG/CYP19 combined genotypes are associated with ovarian response to standard gonadotrophin stimulation of women undergoing medically assisted reproduction.
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Affiliation(s)
- Leandros A. Lazaros
- Genetics and IVF Unit, Department of Obstetrics and Gynecology, Medical School, University of Ioannina, 45110 Ioannina, Greece
| | - Elissavet G. Hatzi
- Genetics and IVF Unit, Department of Obstetrics and Gynecology, Medical School, University of Ioannina, 45110 Ioannina, Greece
| | | | - Prodromos I. Sakaloglou
- Genetics and IVF Unit, Department of Obstetrics and Gynecology, Medical School, University of Ioannina, 45110 Ioannina, Greece
| | - Nectaria V. Xita
- Department of Endocrinology, Medical School, Ioannina University, Ioannina, Greece
| | - Sophia I. Markoula
- Genetics and IVF Unit, Department of Obstetrics and Gynecology, Medical School, University of Ioannina, 45110 Ioannina, Greece
| | - Theodoros I. Stefos
- Genetics and IVF Unit, Department of Obstetrics and Gynecology, Medical School, University of Ioannina, 45110 Ioannina, Greece
| | - Konstantinos A. Zikopoulos
- Genetics and IVF Unit, Department of Obstetrics and Gynecology, Medical School, University of Ioannina, 45110 Ioannina, Greece
| | - Ioannis A. Georgiou
- Genetics and IVF Unit, Department of Obstetrics and Gynecology, Medical School, University of Ioannina, 45110 Ioannina, Greece
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Haller-Kikkatalo K, Sarapik A, Faure GC, Béné MC, Massin F, Salumets A, Uibo R. Serum sTREM-1 (soluble triggering receptor expressed on myeloid cells-1) associates negatively with embryo quality in infertility patients. Am J Reprod Immunol 2012; 68:68-74. [PMID: 22229451 DOI: 10.1111/j.1600-0897.2011.01102.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Accepted: 12/13/2011] [Indexed: 12/25/2022] Open
Abstract
PROBLEM Soluble triggering receptor expressed on myeloid cells-1 (sTREM-1) is a useful biomarker of infection and inflammation. METHOD OF STUDY We studied serum and follicular fluid sTREM-1 in infertile patients (N = 110) utilizing enzyme-linked immunosorbent assay. RESULTS Serum and follicular sTREM-1 were in good correlation (Pearson's correlation 0.56, P < 0.0001) with higher values in follicular fluid (140.4 ± 34.4 and 115.6 ± 35.1 pg/mL, t-test, P < 0.0001). Endometriosis associated with lower follicular and serum sTREM-1 compared with male factor infertility patients (age-adjusted r = -25.7 pg/mL, P = 0.018; r = -22.1 pg/mL, P = 0.030). No associations between follicular or serum sTREM-1 and clinical parameters were found, except higher serum sTREM-1 associated with lower embryo quality in all patients (adjusted r = -0.3%, P = 0.033), with a cutoff value between 111.5 and 113.3 pg/mL (OR = 0.38, P = 0.048; OR = 0.34, P = 0.028) predicting that more than 39% of embryos would be with good quality. CONCLUSION Serum sTREM-1 could represent a prognostic marker for female fecundity, probably indicating impaired inflammatory reaction of immune system.
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Affiliation(s)
- Kadri Haller-Kikkatalo
- Immunology Group, Institute of General and Molecular Pathology, University of Tartu, Tartu, Estonia.
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Lazaros LA, Hatzi EG, Xita NV, Makrydimas GV, Kaponis AI, Takenaka A, Kosmas IP, Sofikitis NV, Stefos TI, Zikopoulos KA, Georgiou IA. Aromatase (CYP19) gene variants influence ovarian response to standard gonadotrophin stimulation. J Assist Reprod Genet 2011; 29:203-9. [PMID: 22089263 DOI: 10.1007/s10815-011-9673-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2011] [Accepted: 11/02/2011] [Indexed: 10/15/2022] Open
Abstract
PURPOSE The association of cytochrome P450 aromatase gene CYP19(TTTA) ( n ) polymorphism with ovarian response to FSH stimulation was explored. METHODS Three hundred women undergoing medically assisted reproduction and 300 women with at least one spontaneous pregnancy participated in the study. CYP19(TTTA) ( n ) polymorphism was genotyped, while serum hormones were determined. During oocyte retrieval, the follicular size, the follicle and oocyte numbers were recorded. RESULTS Six CYP19(TTTA) ( n ) alleles with 7 to 12 repeats were revealed. Women homozygous for long CYP19(TTTA) ( n ) alleles presented with lower serum FSH levels at the third day of the menstrual cycle (p < 0.001) and higher large follicle numbers (p < 0.01), compared to women homozygous for short CYP19(TTTA) ( n ) alleles. The CYP19(TTTA) ( 7 ) allele was associated with higher serum FSH levels (p < 0.003), with lower total follicle (p < 0.02) and large follicle numbers (p < 0.03), while CYP19(TTTA) ( 7 ) allele-carriers presented more frequently with small follicles than CYP19(TTTA) ( 7 ) allele-non carriers (p < 0.01). CONCLUSIONS CYP19 genetic variants were associated with ovarian reserve and response to standard gonadotrophin stimulation of women undergoing in vitro fertilization.
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Affiliation(s)
- Leandros A Lazaros
- Genetics and IVF Unit, Department of Obstetrics and Gynecology, Medical School, Ioannina University, Ioannina, Greece
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Trabert B, Schwartz SM, Peters U, De Roos AJ, Chen C, Scholes D, Holt VL. Genetic variation in the sex hormone metabolic pathway and endometriosis risk: an evaluation of candidate genes. Fertil Steril 2011; 96:1401-1406.e3. [PMID: 21958689 DOI: 10.1016/j.fertnstert.2011.09.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Revised: 08/24/2011] [Accepted: 09/01/2011] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To evaluate the relationship between common genetic variation in genes involved in the biosynthesis and signaling of estrogen and progesterone and endometriosis risk. DESIGN Genetic polymorphism analysis. SETTING Population-based case-control study conducted in Group Health Cooperative enrollees in western Washington. PATIENT(S) Women with newly diagnosed, surgically confirmed endometriosis between 1996 and 2001 (n = 256) and age- and reference year-matched female control subjects without a history of endometriosis (n = 567). INTERVENTIONS(S) None. MAIN OUTCOME MEASURE(S) We evaluated the relationship between common genetic variation and endometriosis risk, using gene-based tests and single-variant analysis of genetic polymorphisms in ESR1, ESR2, PGR, CYP17A1, CYP19A1, HSD17B1, HSD17B2, CYP1A1, CYP1A2, COMT, and GSTM1. RESULT(S) The most consistent gene-based association with endometriosis risk was for CYP19A1. We did not find evidence for consistent significant associations between previously reported candidate SNPs in sex hormone-related genes and endometriosis risk. CONCLUSION(S) In summary, we report increased endometriosis risk with CYP19A1 gene-based tests; replication of the association between endometriosis and this gene or gene region is necessary in a larger study population.
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Altmäe S, Hovatta O, Stavreus-Evers A, Salumets A. Genetic predictors of controlled ovarian hyperstimulation: where do we stand today? Hum Reprod Update 2011; 17:813-28. [DOI: 10.1093/humupd/dmr034] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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Lamp M, Peters M, Reinmaa E, Haller-Kikkatalo K, Kaart T, Kadastik U, Karro H, Metspalu A, Salumets A. Polymorphisms in ESR1, ESR2 and HSD17B1 genes are associated with fertility status in endometriosis. Gynecol Endocrinol 2011; 27:425-33. [PMID: 20586553 DOI: 10.3109/09513590.2010.495434] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVE To investigate whether polymorphisms in genes involved in biosynthesis and signalling of sex steroids influence susceptibility to endometriosis and to infertility associated with it. MATERIALS AND METHODS Patients with endometriosis (n = 150) and fertile controls (n = 199) were genotyped for polymorphisms in oestrogen receptor genes ESR1 (rs2234693 - T/C single nucleotide polymorphism (SNP), dinucleotide (TA)(n) repeat) and ESR2 (dinucleotide (CA)(n) repeat), progesterone receptor gene PGR (rs10895068 - G/A SNP, 306-bp Alu-insertion), 17β-hydroxysteroid dehydrogenase type 1 gene HSD17B1 (rs605059 - A/G SNP), and aromatase gene CYP19A1 (rs10046 - C/T SNP, (TTTA)(n) tetranucleotide repeat, 3-bp TCT insertion/deletion polymorphism). RESULTS The HSD17B1 A/G SNP A allele increased overall endometriosis risk and the risk of stage I-II disease, while ESR1 longer (TA)(n) repeats only correlated with susceptibility to stage I-II endometriosis. When considering patients' fertility status, HSD17B1 A/G SNP A allele and ESR1 longer (TA)(n) repeats were associated with endometriosis accompanied by infertility, while ESR2 shorter (CA)(n) repeats were linked with endometriosis without infertility. Other polymorphisms were distributed similarly among patients and controls. CONCLUSIONS Genetic variants in ESR1, ESR2, and HSD17B1 genes could modify susceptibility to endometriosis and might influence the fertility status in endometriosis patients.
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Affiliation(s)
- Merit Lamp
- Department of Obstetrics and Gynaecology, University of Tartu, Tartu, Estonia.
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Genome-wide analysis shows no genomic predictors of ovarian response to stimulation by exogenous FSH for IVF. Reprod Biomed Online 2011; 22:382-8. [DOI: 10.1016/j.rbmo.2010.12.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2010] [Revised: 12/11/2010] [Accepted: 12/14/2010] [Indexed: 11/23/2022]
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Lazaros L, Xita N, Kaponis A, Hatzi E, Plachouras N, Sofikitis N, Zikopoulos K, Georgiou I. The association of aromatase (CYP19) gene variants with sperm concentration and motility. Asian J Androl 2011; 13:292-7. [PMID: 21217768 DOI: 10.1038/aja.2010.144] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The irreversible transformation of androgens into oestrogens is catalysed by cytochrome P450 aromatase. In the present study, we explored the contribution of the (TTTA)(n) polymorphism in the aromatase gene (CYP19) to sperm concentration and motility. Ninety normozoospermic and 60 oligospermic men were examined during infertility examinations. DNA was extracted from spermatozoa, and the CYP19 (TTTA)(n) polymorphism was genotyped by PCR. Genotype analysis revealed six CYP19 (TTTA)(n) alleles with 7-12 repeats. The allelic distribution of the CYP19 (TTTA)(n) polymorphism differed between normozoospermic and oligospermic men (P<0.01). Oligospermic men less frequently had long CYP19 alleles than did normozoospermic men (25 and 37.8%, respectively; P<0.02). The higher frequency of short CYP19 alleles in oligospermic men compared to normozoospermic men (43.3 and 28.3%, respectively; P<0.01) was primarily due to the distribution of the CYP19 (TTTA)(7) allele. The CYP19 (TTTA)(7) allele was associated with lower sperm concentration in normozoospermic men (P<0.01) and in the total study population (P<0.01); it was also associated with lower sperm motility in normozoospermic men (P<0.05) and in the total study population (P<0.01). In conclusion, the CYP19 (TTTA)(7) allele probably impairs aromatase activity, which in turn alters aromatase and oestrogen levels in the testis, leading to decreased sperm concentration and motility. These findings support the significance of cytochrome P450 aromatase in human spermatogenesis and consequently in semen quality.
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Affiliation(s)
- Leandros Lazaros
- Genetics and IVF Unit, Department of Obstetrics and Gynaecology, Medical School, University of Ioannina, Ioannina 45110, Greece
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