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Talarczyk-Desole J, Andrusiewicz M, Chmielewska M, Berger A, Pawelczyk L, Jędrzejczak P, Kotwicka M. A Potential Relationship Between Estrogen
Receptors Polymorphisms, Sperm Function and
in vitro Fertilization Success: A Preliminary Study*. POSTEP HIG MED DOSW 2021. [DOI: 10.5604/01.3001.0014.8782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background: Estrogen receptor 1 (ESR1) and 2 (ESR2) play an important role in regulating fertility in the
human reproductive system. Polymorphisms of these receptor genes have been implicated in
male infertility in both Chinese and Caucasian populations. However, studies have produced
inconsistent results. Spermatozoa defects that result in conception deficiencies could be related
to estrogens, their receptors, or genes involved in estrogen-related pathways. This study aims
to explore the potential association between the ESR1 and the ESR2 polymorphisms in relation
to semen parameters of Caucasian males as well as fertilization success.
Materials/Methods: A total of 116 males were included in this study. Forty couples underwent conventional in vitro
fertilization, while 76 couples were treated by intracytoplasmic sperm injection. Standard
semen analyses were performed according to the World Health Organization criteria. Polymerase
chain reaction and restriction fragment length polymorphisms were used to determine
genotype and allele distributions.
Results: A strong association between the ESR1 rs2234693 recognized by PvuII enzyme, genotype/allele
distribution and fertilization success was shown. The T allele occurrence was significantly
lower in the case of fertilization failure (p = 0.02). Additionally, the TT genotype was absent
in the same group (p=0.02). In the case of the remaining analyzed polymorphisms, little to no
interdependence of genotype/allele distribution and fertilization success was noted.
Conclusions: Apart from ESR1 rs2234693, the study failed to demonstrate that fertilization success was associated
with the selected polymorphisms. In most cases, we did not discover a relationship
between both estrogen receptors polymorphisms and sperm function.
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Affiliation(s)
- Joanna Talarczyk-Desole
- Division of Infertility and Reproductive Endocrinology, Poznan University of Medical Sciences, Poznan, Poland
| | - Mirosław Andrusiewicz
- Chair and Department of Cell Biology, Poznan University of Medical Sciences, Poznan, Poland
| | - Małgorzata Chmielewska
- Chair and Department of Cell Biology, Poznan University of Medical Sciences, Poznan, Poland
| | - Anna Berger
- Division of Infertility and Reproductive Endocrinology, Poznan University of Medical Sciences, Poznan, Poland
| | - Leszek Pawelczyk
- Division of Infertility and Reproductive Endocrinology, Poznan University of Medical Sciences, Poznan, Poland
| | - Piotr Jędrzejczak
- Division of Infertility and Reproductive Endocrinology, Poznan University of Medical Sciences, Poznan, Poland
| | - Małgorzata Kotwicka
- Chair and Department of Cell Biology, Poznan University of Medical Sciences, Poznan, Poland
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Smolarz B, Romanowicz H. Association between single nucleotide polymorphism of the CYP19A1 and ESR2 genes and endometriosis. Arch Gynecol Obstet 2021; 304:439-445. [PMID: 33825969 DOI: 10.1007/s00404-021-06051-5] [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] [Received: 09/28/2020] [Accepted: 03/27/2021] [Indexed: 12/11/2022]
Abstract
PURPOSE Endometriosis is a frequent gynaecological condition, both in Poland and in the world. The development of this disease is supported by hormonal, immunological and environmental factors. During the recent years, a particular attention has been focused on the genetic polymorphisms which may be of particular significance for the increased incidence rates of endometriosis. According to literature data, Oestrogen Receptor 2 (ESR2) and Cytochrome P450 Family 19 Subfamily A Member 1 (CYP19A1) genes may be accounted to the potential risk factors of infertility associated with endometriosis. The reported research was aimed to evaluate the association between single nucleotide polymorphisms (SNPs) rs17179740 of ESR2 and rs2899470 of CYP19A1 genes and the incidence of endometriosis. METHODS The study material included blood specimens, collected from patients (n = 200) with endometriosis. Blood samples from age-matched, endometriosis-free women (n = 200) served as control. The High-Resolution Melter (HRM) technique was applied for polymorphism analysis. RESULTS Regarding rs2899470 polymorphism TT homozygotes was significantly more prevalent among the patients with endometriosis than in the controls (OR 2.19; p = 0.04). In case of rs17179740, GG homozygotes, as well as AG-AA genotypes, were significantly more prevalent among the endometriosis patients (OR 2.48, p = 0.04 and OR 2.36, p = 0.04, respectively). CONCLUSION Summing up, the investigated polymorphisms of ESR2 and CYP19A1 gene are associated with the observed incidence of endometriosis.
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Affiliation(s)
- Beata Smolarz
- Laboratory of Cancer Genetics, Department of Pathology, Polish Mother's Memorial Hospital Research Institute, Rzgowska 281/289, 93-338, Lodz, Poland.
| | - Hanna Romanowicz
- Laboratory of Cancer Genetics, Department of Pathology, Polish Mother's Memorial Hospital Research Institute, Rzgowska 281/289, 93-338, Lodz, Poland
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The Genetic Background of Endometriosis: Can ESR2 and CYP19A1 Genes Be a Potential Risk Factor for Its Development? Int J Mol Sci 2020; 21:ijms21218235. [PMID: 33153202 PMCID: PMC7663510 DOI: 10.3390/ijms21218235] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/30/2020] [Accepted: 11/02/2020] [Indexed: 12/22/2022] Open
Abstract
Endometriosis is defined as the presence of endometrial foci, localized beyond their primary site, i.e., the uterine cavity. The etiology of this disease is rather complex. Its development is supported by hormonal, immunological, and environmental factors. During recent years, particular attention has been focused on the genetic mechanisms that may be of particular significance for the increased incidence rates of endometriosis. According to most recent studies, ESR2 and CYP19A1 genes may account for the potential risk factors of infertility associated with endometriosis. The paper presents a thorough review of the latest reports and data concerning the genetic background of the risk for endometriosis development.
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Chakraborty T, Mohapatra S, Zhou LY, Ohta K, Matsubara T, Iguchi T, Nagahama Y. Estrogen Receptor β2 Oversees Germ Cell Maintenance and Gonadal Sex Differentiation in Medaka, Oryzias latipes. Stem Cell Reports 2020; 13:419-433. [PMID: 31412286 PMCID: PMC6700524 DOI: 10.1016/j.stemcr.2019.07.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 07/17/2019] [Accepted: 07/18/2019] [Indexed: 02/06/2023] Open
Abstract
In vertebrates, estrogen receptors are essential for estrogen-associated early gonadal sex development. Our previous studies revealed sexual dimorphic expression of estrogen receptor β2 (ERβ2) during embryogenesis of medaka, and here we investigated the functional importance of ERβ2 in female gonad development and maintenance using a transgenerational ERβ2-knockdown (ERβ2-KD) line and ERβ2-null mutants. We found that ERβ2 reduction favored male-biased gene transcription, suppressed female-responsive gene expression, and affected SDF1a and CXCR4b co-assisted chemotactic primordial germ cell (PGC) migration. Co-overexpression of SDF1a and CXXR4b restored the ERβ2-KD/KO associated PGC mismigration. Further analysis confirmed that curtailment of ERβ2 increased intracellular Ca2+ concentration, disrupted intra- and extracellular calcium homeostasis, and instigated autophagic germ cell degradation and germ cell loss, which in some cases ultimately affected the XX female sexual development. This study is expected improve our understanding of germ cell maintenance and sex spectrum, and hence open new avenues for reproductive disorder management. ERβ2 has a multifaceted role in early gonadal sex differentiation ERβ2 directly influences SDF1a/CXCR4b PGC chemotaxis and germ cell migration ERβ2-KD impairs intra- and extracellular calcium homeostasis and triggers cell death In some cases, ERβ2-KD and KO alters sexual development in female gonad
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Affiliation(s)
- Tapas Chakraborty
- South Ehime Fisheries Research Center, Ehime University, Ainan 798-4206, Japan; Laboratory of Reproductive Biology, National Institute for Basic Biology, Okazaki 444-8585, Japan; Laboratory of Molecular Environmental Endocrinology, Okazaki Institute for Integrative Bioscience, National Institute of Natural Sciences, Okazaki 444-8787, Japan.
| | - Sipra Mohapatra
- South Ehime Fisheries Research Center, Ehime University, Ainan 798-4206, Japan
| | - Lin Yan Zhou
- Laboratory of Reproductive Biology, National Institute for Basic Biology, Okazaki 444-8585, Japan; Key Laboratory of Aquatic Science of Chongqing, School of Life Science, Southwest University, Chongqing 400715, China
| | - Kohei Ohta
- Laboratory of Reproductive Biology, National Institute for Basic Biology, Okazaki 444-8585, Japan; Laboratory of Marine Biology, Kyushu University, Fukuoka 812-8581, Japan
| | - Takahiro Matsubara
- South Ehime Fisheries Research Center, Ehime University, Ainan 798-4206, Japan
| | - Taisen Iguchi
- Laboratory of Molecular Environmental Endocrinology, Okazaki Institute for Integrative Bioscience, National Institute of Natural Sciences, Okazaki 444-8787, Japan; Nanobioscience, Yokohama City University, Yokohama 236-0027, Japan
| | - Yoshitaka Nagahama
- South Ehime Fisheries Research Center, Ehime University, Ainan 798-4206, Japan; Laboratory of Reproductive Biology, National Institute for Basic Biology, Okazaki 444-8585, Japan
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5
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Zanatta AP, Brouard V, Gautier C, Goncalves R, Bouraïma-Lelong H, Mena Barreto Silva FR, Delalande C. Interactions between oestrogen and 1α,25(OH) 2-vitamin D 3 signalling and their roles in spermatogenesis and spermatozoa functions. Basic Clin Androl 2017; 27:10. [PMID: 28491323 PMCID: PMC5421336 DOI: 10.1186/s12610-017-0053-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 03/16/2017] [Indexed: 02/07/2023] Open
Abstract
Oestrogens and 1α,25(OH)2-vitamin D3 (1,25-D3) are steroids that can provide effects by binding to their receptors localised in the cytoplasm and in the nucleus or the plasma membrane respectively inducing genomic and non-genomic effects. As confirmed notably by invalidation of the genes, coding for their receptors as tested with mice with in vivo and in vitro treatments, oestrogens and 1,25-D3 are regulators of spermatogenesis. Moreover, some functions of ejaculated spermatozoa as viability, DNA integrity, motility, capacitation, acrosome reaction and fertilizing ability are targets for these hormones. The studies conducted on their mechanisms of action, even though not completely elicited, have allowed the demonstration of putative interactions between their signalling pathways that are worth examining more closely. The present review focuses on the elements regulated by oestrogens and 1,25-D3 in the testis and spermatozoa as well as the interactions between the signalling pathways of both hormones.
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Affiliation(s)
- Ana Paula Zanatta
- INRA, OeReCa, Normandie University, UNICAEN, 14000 Caen, France.,Biochemistry Department, Laboratory of Hormones & Signal Transduction, UFSC, Florianópolis, Brazil
| | - Vanessa Brouard
- INRA, OeReCa, Normandie University, UNICAEN, 14000 Caen, France
| | - Camille Gautier
- INRA, OeReCa, Normandie University, UNICAEN, 14000 Caen, France
| | - Renata Goncalves
- INRA, OeReCa, Normandie University, UNICAEN, 14000 Caen, France.,Biochemistry Department, Laboratory of Hormones & Signal Transduction, UFSC, Florianópolis, Brazil
| | | | | | - Christelle Delalande
- INRA, OeReCa, Normandie University, UNICAEN, 14000 Caen, France.,Laboratoire Œstrogènes, Reproduction, Cancer (OeReCa), EA 2608 USC INRA1377, Université de Caen Normandie, Esplanade de la Paix, CS 14032, 14032 CAEN cedex 5, France
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6
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Schulster M, Bernie AM, Ramasamy R. The role of estradiol in male reproductive function. Asian J Androl 2017; 18:435-40. [PMID: 26908066 PMCID: PMC4854098 DOI: 10.4103/1008-682x.173932] [Citation(s) in RCA: 200] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Traditionally, testosterone and estrogen have been considered to be male and female sex hormones, respectively. However, estradiol, the predominant form of estrogen, also plays a critical role in male sexual function. Estradiol in men is essential for modulating libido, erectile function, and spermatogenesis. Estrogen receptors, as well as aromatase, the enzyme that converts testosterone to estrogen, are abundant in brain, penis, and testis, organs important for sexual function. In the brain, estradiol synthesis is increased in areas related to sexual arousal. In addition, in the penis, estrogen receptors are found throughout the corpus cavernosum with high concentration around neurovascular bundles. Low testosterone and elevated estrogen increase the incidence of erectile dysfunction independently of one another. In the testes, spermatogenesis is modulated at every level by estrogen, starting with the hypothalamus-pituitary-gonadal axis, followed by the Leydig, Sertoli, and germ cells, and finishing with the ductal epithelium, epididymis, and mature sperm. Regulation of testicular cells by estradiol shows both an inhibitory and a stimulatory influence, indicating an intricate symphony of dose-dependent and temporally sensitive modulation. Our goal in this review is to elucidate the overall contribution of estradiol to male sexual function by looking at the hormone's effects on erectile function, spermatogenesis, and libido.
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Affiliation(s)
| | | | - Ranjith Ramasamy
- Department of Urology, Miller School of Medicine, University of Miami, Miami, FL, USA
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Botelho MC, Alves H, Barros A, Rinaldi G, Brindley PJ, Sousa M. The role of estrogens and estrogen receptor signaling pathways in cancer and infertility: the case of schistosomes. Trends Parasitol 2015; 31:246-50. [PMID: 25837311 DOI: 10.1016/j.pt.2015.03.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 03/09/2015] [Accepted: 03/09/2015] [Indexed: 01/26/2023]
Abstract
Schistosoma haematobium, a parasitic flatworm that infects more than 100 million people, mostly in the developing world, is the causative agent of urogenital schistosomiasis, and is associated with a high incidence of squamous cell carcinoma (SCC) of the bladder. Schistosomiasis haematobia also appears to negatively influence fertility, and is particularly associated with female infertility. Given that estrogens and estrogen receptors are key players in human reproduction, we speculate that schistosome estrogen-like molecules may contribute to infertility through hormonal imbalances. Here, we review recent findings on the role of estrogens and estrogen receptors on both carcinogenesis and infertility associated with urogenital schistosomiasis and discuss the basic hormonal mechanisms that might be common in cancer and infertility.
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Affiliation(s)
- Mónica C Botelho
- INSA, National Institute of Health Dr. Ricardo Jorge, Porto, Portugal; IPATIMUP, Institute of Pathology and Molecular Immunology of the University of Porto, Portugal.
| | - Helena Alves
- INSA, National Institute of Health Dr. Ricardo Jorge, Porto, Portugal
| | - Alberto Barros
- Centre for Reproductive Genetics Prof. Alberto Barros, Porto, Portugal; Department of Genetics, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Gabriel Rinaldi
- Department of Microbiology, Immunology and Tropical Medicine, and Research Center for Neglected Tropical and Infectious Diseases, School of Medicine & Health Sciences, George Washington University, Washington, DC 20037, USA
| | - Paul J Brindley
- Department of Microbiology, Immunology and Tropical Medicine, and Research Center for Neglected Tropical and Infectious Diseases, School of Medicine & Health Sciences, George Washington University, Washington, DC 20037, USA
| | - Mário Sousa
- Department of Microscopy, Laboratory of Cell Biology, Institute of Biomedical Sciences Abel Salazar (ICBAS), Multidisciplinary Unit for Biomedical Research-UMIB, University of Porto, Porto, Portugal
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Tahmasbpour E, Balasubramanian D, Agarwal A. A multi-faceted approach to understanding male infertility: gene mutations, molecular defects and assisted reproductive techniques (ART). J Assist Reprod Genet 2014; 31:1115-37. [PMID: 25117645 PMCID: PMC4156950 DOI: 10.1007/s10815-014-0280-6] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 06/16/2014] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND The assisted reproductive techniques aimed to assist infertile couples have their own offspring carry significant risks of passing on molecular defects to next generations. RESULTS Novel breakthroughs in gene and protein interactions have been achieved in the field of male infertility using genome-wide proteomics and transcriptomics technologies. CONCLUSION Male Infertility is a complex and multifactorial disorder. SIGNIFICANCE This review provides a comprehensive, up-to-date evaluation of the multifactorial factors involved in male infertility. These factors need to be first assessed and understood before we can successfully treat male infertility.
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Affiliation(s)
| | | | - Ashok Agarwal
- />Center for Reproductive Medicine, Cleveland Clinic, 44195 Cleveland, OH USA
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Cai Y, Liu T, Li H, Xiong C. Meta-analysis of the association of oestrogen receptor-beta gene RsaI (G/A) and AluI (A/G) polymorphisms with male infertility. Andrologia 2014; 47:257-65. [PMID: 24655068 DOI: 10.1111/and.12254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/05/2014] [Indexed: 11/27/2022] Open
Abstract
A more precise assessment of association of oestrogen receptor-beta genes RsaI(G/A) and AluI(A/G) polymorphisms with male infertility from current contradictory results is the aim of this meta-analysis including five RsaI and six AluI studies respectively. No association was observed between infertility and RsaI or AluI. In the stratified analysis by ethnicity, increased risk was found among Caucasians with GA versus GG (OR = 2.263, 95% CI = 1.073-4.776, I(2) = 57.1%) and dominant model (OR = 2.117, 95% CI = 1.018-4.403, I(2) = 49.0%) of RsaI. It was not observed for AluI. In the stratified analysis by infertility subtypes, a reduced risk in GA of AluI was observed among azoospermia or severe oligospermia (GA versus AA: OR = 0.686, 95% CI = 0.498-0.945, I(2) = 21.2%; recessive model: OR = 1.403, 95% CI = 1.056-1.864, I(2) = 31.7%), and reduced risk was in recessive model (OR = 0.650, 95% CI = 0.446-0.948, I(2) = 0.0%) of subtypes, except for azoospermia or severe oligospermia. However, this finding was not observed in RsaI. The meta-analysis showed GA and GG of AluI are possibly resistant factors for spermatogenesis dysfunction and deteriorated sperm quality.
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Affiliation(s)
- Y Cai
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Association of polymorphisms in estrogen receptors (ESR1 and ESR2) with male infertility: a meta-analysis and systematic review. J Assist Reprod Genet 2014; 31:601-11. [PMID: 24647635 DOI: 10.1007/s10815-014-0212-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Accepted: 03/04/2014] [Indexed: 10/25/2022] Open
Abstract
PURPOSE Estrogens play an important role in male reproduction via interacting with estrogen receptors (ERs), whose expression can be regulated by the polymorphisms in different regions of ESR1 and ESR2 genes. However, results from published studies on the association between four well-characterized polymorphisms (PvuII, XbaI, RsaI, and AluI) in the gene of ERs (ESR1 and ESR2) and male infertility risk are inconclusive. METHODS To investigate the strength of relationship of PvuII and XbaI in ESR1 and RsaI and AluI in ESR2 with male infertility, we conducted a meta-analysis of 12 eligible studies with odds ratio (OR) and its corresponding 95 % confidence intervals (95 % CI). RESULTS Overall, ESR1 PvuII and ESR2 RsaI polymorphisms were significantly associated with male infertility risk. The subgroup analyses by ethnicities demonstrated that in Asians, ESR1 PvuII, XbaI and ESR2 RsaI polymorphisms were significantly associated with a decreased infertility risk, while in Caucasians both ESR1 PvuII and ESR2 RsaI polymorphisms increased the susceptibility to male infertility. As for ESR2 AluI polymorphism, no significant association was detected in either overall analysis or subgroup analyses by ethnicities/genotyping methods. CONCLUSIONS This meta-analysis suggested that polymorphisms in the genes of ERs (ESR1 and ESR2) may have differential roles in the predisposition to male infertility according to the different ethnic backgrounds. Further well-designed and unbiased studies with larger sample size and diverse ethnic backgrounds should be conducted to verify our findings.
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Khattri A, Reddy VP, Pandey RK, Sudhakar DVS, Gupta NJ, Chakravarty BN, Deenadayal M, Singh L, Thangaraj K. Novel mutations in calcium/calmodulin-dependent protein kinase IV (CAMK4) gene in infertile men. ACTA ACUST UNITED AC 2012; 35:810-818. [PMID: 22897820 DOI: 10.1111/j.1365-2605.2012.01302.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Calcium/calmodulin-dependent protein kinase IV (CAMK4) is a multifunctional serine/threonine protein kinase, which plays an important role in the spermatogenesis by phosphorylating protamines. It has been shown to be involved in the regulation of human sperm motility. Moreover, the Camk4 knockout mice were infertile because of severely reduced sperm count and morphological abnormalities. As no study is available on the association of this gene with male infertility, we analysed all the exons of CAMK4 gene in ethnically matched 283 infertile and 268 fertile Indian men. We identified twenty nucleotide substitutions, of which twelve were novel. Of these novel variants, eight were exclusively detected in infertile men. Moreover, two infertile men-specific mutations were non-synonymous replacing amino acids at the highly conserved region. In silico analysis predicted both of these mutations as 'deleterious'. In addition to nucleotide substitutions, we identified five novel insertion-deletion mutations; of these, g.150264_66delGCG was exclusively found in two oligoasthenoteratozoospermic men. In silico analysis of infertile men exclusive mutations predicted that they can alter/diminish the potential binding sites of splicing factors, which may affect the mRNA splicing and protein translation. Our study suggests that the mutations in CAMK4 may lead to abnormal semen parameters.
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Affiliation(s)
- A Khattri
- Centre for Cellular and Molecular Biology, Hyderabad, India
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12
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Lee IW, Kuo PH, Su MT, Kuan LC, Hsu CC, Kuo PL. Quantitative trait analysis suggests polymorphisms of estrogen-related genes regulate human sperm concentrations and motility. Hum Reprod 2011; 26:1585-96. [PMID: 21429951 DOI: 10.1093/humrep/der062] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Human spermatogenesis is regulated by complex networks, and estrogens are recognized as one of the significant regulators of spermatogenesis. We tested the associations between variants of estrogen-related genes and semen parameters. METHODS We performed genotyping for genetic variants of estrogen-related genes and quantitative trait analysis of fertile and infertile men with well-characterized reproductive phenotypes. Men with known semen parameters (n= 677) were enrolled, including 210 fertile men and 467 infertile men. A total of 17 genetic markers from 10 genes, including 2 estrogen receptors (ER-α, ER-β), 7 estrogen synthesizing/metabolizing genes (CYP19A1, HSD17B1, CYP1A1, CYP1B1, COMT, GSTM1, GSTT1) and 1 transport gene (SHBG) were genotyped. Sperm concentration, motility and morphology were taken as quantitative traits to correlate with genetic variants in the estrogen-related genes. RESULTS Five genes (rs1801132 and rs2228480 of the ER-α gene, rs1256049 and rs4986938 of the ER-β gene, rs605059 of the HSD17B1 gene, rs1799941 of the SHBG gene and rs1048943 and rs4646903 of the CYP1A1 gene) were found to be significantly associated with sperm concentration (P< 0.01), while five genes (rs1801132 of the ER-a gene, rs1256049 of the ER-β gene, rs1048943 of the CYP1A1 gene, rs605059 of the HSD17B1 gene and rs1799941 along with rs6259 of the SHBG gene) were associated with sperm motility (P< 0.01). None of the estrogen-related genes were associated with sperm morphology. With an increasing number of risk alleles, sperm concentration and motility tended to deteriorate and show a loci-dosage effect. CONCLUSIONS Quantitative trait analysis based on a limited number of genetic markers suggests that estrogen-related genes mainly regulate sperm concentration and motility.
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Affiliation(s)
- I-Wen Lee
- Department of Obstetrics and Gynecology, National Cheng Kung University Hospital, Tainan, Taiwan
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Affiliation(s)
- Kiran Singh
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi 221005, India
| | - Deepika Jaiswal
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi 221005, India
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Safarinejad MR, Shafiei N, Safarinejad S. Association of polymorphisms in the estrogen receptors alpha, and beta (ESR1, ESR2) with the occurrence of male infertility and semen parameters. J Steroid Biochem Mol Biol 2010; 122:193-203. [PMID: 20599614 DOI: 10.1016/j.jsbmb.2010.06.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2010] [Revised: 05/16/2010] [Accepted: 06/18/2010] [Indexed: 11/23/2022]
Abstract
Male infertility is a multifactorial condition with a strong genetic component. In the last decade a large number of investigations focused on the identification of gene variants affecting spermatogenesis in human. Polymorphisms of the estrogen receptor (ER) genes, have been implicated in male infertility, however, comprehensive data are lacking. We investigated the association between the ER-α gene (ESR1) PvuII and XbaI and ER-β gene (ESR2) RsaI and Alul polymorphisms and the idiopathic male infertility in Iranian males. Polymerase chain reaction (PCR) method and restriction fragment length polymorphism (RFLP) were used to detect the ER-α, and ER-β gene polymorphisms in 164 infertile men and 164 age-matched healthy controls. Reproductive hormones were measured and at least two semen analyses were performed in each subject. Significant differences were observed in the frequency distribution of Pvull and XbaI in the ESR-α gene and RsaI and Alul in the ER-β gene between patients and controls. The presence of the ER-α Pvull TC (OR = 0.56, 95% CI: 0.26-0.80; P = 0.011), ER-α XbaI AG (OR = 0.51, 95% CI: 0.31-0.84; P = 0.017), and ER-β Alul GG (OR = 0.48, 95% CI: 0.265-0.84; P = 0.012) genotypes suggest a protective effect for infertility. The ER-β RsaI AG (OR = 2.32, 95% CI: 1.61-3.22; P = 0.012) and ER-β Alul AG (OR=2.76, 95% CI: 1.64-3.66; P=0.014) genotypes are associated with increased infertility risk. Subjects (both fertile and infertile) with ER-α Pvull TT, ER-α XbaI AA, ER-β RsaI AG, and ER-β Alul AG genotypes had significantly lower levels of serum sex hormone binding globulin (SHBG), and luteinizing hormone (LH), but, higher serum levels of free estradiol and follicle stimulating hormone (FSH). The same genotypes had significantly lower values for sperm density, sperm motility, and percentage of sperm with normal morphology. Our results further suggest a possible role of ESR-α, and ER-β variants on male infertility. Further studies are needed to replicate our findings as well as to better elucidate the biological mechanisms of the modulation of ESR-α, and ER-β on male infertility.
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