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Yang J, Bao Z, Li J, Lu T, Cai J, Sun S, Shen N, Chen Y, Zhao B, Wu X. MTHFR as a Novel Candidate Marker for Litter Size in Rabbits. Animals (Basel) 2024; 14:1930. [PMID: 38998044 PMCID: PMC11240429 DOI: 10.3390/ani14131930] [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: 03/22/2024] [Revised: 06/15/2024] [Accepted: 06/25/2024] [Indexed: 07/14/2024] Open
Abstract
Litter size is a significant economic trait during animal reproduction. This current study attempted to decipher whether MTHFR promotes the apoptosis of granulosa cells (GCs) and inhibits their proliferation by investigating the effects of the MTHFR gene using flow cytometry and a Cell Counting Kit-8 (CCK-8) assay. MTHFR is linked with ovarian follicle development in the reproductive performance of 104 female New Zealand rabbits. We observed that MTHFR could regulate the mRNA of follicular development-related genes (TIMP1, CITED1, FSHR, GHR, HSD17B1, and STAR) with a qRT-PCR, and we observed the protein expression of CITED1 and GHR using a western blot (WB) analysis. The dual luciferase activity assays helped identify the core promoter region of the MTHFR gene, and the polymorphism of the MTHFR promoter region was studied using Sanger sequencing. The results indicated four single nucleotide polymorphisms (SNPs) within the core promoter region, among which the g.-680C>A locus was significantly associated with both the total and alive litter sizes. Additionally, the CC genotype was associated with the largest total and alive litter sizes, compared to the CA and AA genotypes (p < 0.05). In conclusion, this study investigated the effects of MTHFR on ovarian granulosa cells and its association with selected reproductive parameters in rabbits. The results provide a theoretical foundation for the use of MTHFR as a molecular marker in rabbits.
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Affiliation(s)
- Jie Yang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Zhiyuan Bao
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Jiali Li
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Tingting Lu
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Jiawei Cai
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Shaoning Sun
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Ning Shen
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Yang Chen
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Bohao Zhao
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Xinsheng Wu
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, Yangzhou 225009, China
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Wang R, Lv Y, Dou T, Yang Q, Yu C, Guan Q. Autoimmune thyroid disease and ovarian hypofunction: a review of literature. J Ovarian Res 2024; 17:125. [PMID: 38877588 PMCID: PMC11177435 DOI: 10.1186/s13048-024-01451-y] [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: 09/23/2023] [Accepted: 06/10/2024] [Indexed: 06/16/2024] Open
Abstract
Thyroid hormones(THs) are essential for the proper functioning of the ovaries, and multiple studies have shown that thyroid abnormalities, especially during adolescence and reproductive age, can lead to lifelong ovarian dysfunction. Autoimmune thyroid disease (AITD), one of the most common organ specific autoimmune diseases, is mainly mediated by cellular autoimmune reactions, and has strong inflammatory infiltration and immune active cells, including chemokines and cytokines, which are important components of ovarian aging. This suggests that autoimmune and inflammatory molecular processes may play a role in the emergence of ovarian dysfunction. The purpose of this review is to summarize recent in vivo and in vitro evidence of a complex relationship between AITD and ovarian dysfunction. AITD is closely related to the decline of ovarian function from the perspective of antibody, cytokine, oxidative stress, and genetic factors. Finally, some of the currently known treatments for AITD and hypo ovarian disease are summarized.
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Affiliation(s)
- Ru Wang
- Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging,Ministry of Education, Department of Endocrinology, Shandong Provincial Hospital of Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
- Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, 250021, Shandong, China
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
- Shandong Engineering Laboratory of Prevention and Control for Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
| | - Youyuan Lv
- Internal Medicine Department of the Second Affiliated Hospital of Shandong University, Jinan, 250021, Shandong, China
| | - Tao Dou
- Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging,Ministry of Education, Department of Endocrinology, Shandong Provincial Hospital of Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
- Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, 250021, Shandong, China
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
- Shandong Engineering Laboratory of Prevention and Control for Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
| | - Qian Yang
- Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging,Ministry of Education, Department of Endocrinology, Shandong Provincial Hospital of Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
- Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, 250021, Shandong, China
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
- Shandong Engineering Laboratory of Prevention and Control for Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
| | - Chunxiao Yu
- Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging,Ministry of Education, Department of Endocrinology, Shandong Provincial Hospital of Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China.
- Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, 250021, Shandong, China.
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China.
- Shandong Engineering Laboratory of Prevention and Control for Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China.
| | - Qingbo Guan
- Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging,Ministry of Education, Department of Endocrinology, Shandong Provincial Hospital of Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China.
- Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, 250021, Shandong, China.
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China.
- Shandong Engineering Laboratory of Prevention and Control for Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China.
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Ledowsky CJ, Schloss J, Steel A. Variations in folate prescriptions for patients with the MTHFR genetic polymorphisms: A case series study. EXPLORATORY RESEARCH IN CLINICAL AND SOCIAL PHARMACY 2023; 10:100277. [PMID: 37228355 PMCID: PMC10205484 DOI: 10.1016/j.rcsop.2023.100277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 03/16/2023] [Accepted: 04/30/2023] [Indexed: 05/27/2023] Open
Abstract
Background Over 48.5 million couples are reported with infertility worldwide. Health policy recommends folic acid in women of childbearing age, particularly in preconception and pregnancy which results in women purchasing over-the-counter prenatal multivitamins containing folic acid through pharmacies and other retail outlets. Emerging studies are investigating whether other forms of supplemental folate are more suitable, particularly for those with methylenetetrahydrofolate reductase (MTHFR) polymorphisms. This case series aimed to document variations in forms and dosage of folate prescribed by Australian practitioners to patients with diagnosed infertility and MTHFR polymorphisms. Methods Australian practitioners were invited to complete a retrospective case report form for patients that presented with unexplained infertility. This case report form documented the form and dose of folate that practitioners were prescribing to their infertility patient with MTHFR polymorphisms, together with their fertility history. Results Six practitioners submitted case information for 12 patients with diagnosed infertility and MTHFR polymorphisms. All patients had been advised by their practitioner to remove folic acid in supplemental form and were prescribed 5-methyltetrahydrofolate (5-MTHF) or a combination of 5-MTHF and folinic acid, at higher doses than the Australian recommended dose (mean daily maximum prescribed dose: 2325μg). Eleven patients conceived within the treatment period (average treatment of one year) and ten were reported as having a live birth. Conclusion This case series has highlighted clinical practices that vary from the recommendations by Australian policy. Further research is required to verify the clinical importance of variations in folate prescriptions for women with MTHFR polymorphisms and how folate recommendations may need to change depending on these polymorphisms. This has direct relevance to those prescribing at the pharmacy and retail level, specifically pharmacists and pharmacy assistants.
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Affiliation(s)
- Carolyn Jane Ledowsky
- Endeavour College of Natural Health, now at University of Technology Sydney, Faculty of Health, Australia
| | - Janet Schloss
- Southern Cross University, Natural Centre for Naturopathic Medicine, Lismore, NSW, Australia
| | - Amie Steel
- University of Technology Sydney, Faculty of Health, Australia
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Lu YJ, Li Q, Chen LX, Tian T, Kang J, Hao YX, Zhou JS, Wang YY, Yan LY, Li R, Chang L, Qiao J. Association between maternal MTHFR C677T/A1298C combination polymorphisms and IVF/ICSI outcomes: a retrospective cohort study. Hum Reprod Open 2022; 2023:hoac055. [PMID: 36531663 PMCID: PMC9749479 DOI: 10.1093/hropen/hoac055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 10/10/2022] [Indexed: 10/11/2023] Open
Abstract
STUDY QUESTION What are the roles of maternal 5,10-methylenetetrahydrofolate reductase (MTHFR) C677T/A1298C combination polymorphisms on the embryological and clinical outcomes of IVF/ICSI? SUMMARY ANSWER Our study reveals for the first time that the oocyte maturation potential gradually decreases with a reduction of maternal MTHFR activity determined by combined C677T/A1298C polymorphisms, while embryo quality was worse in women with intermediate MTHFR activity. WHAT IS KNOWN ALREADY Although many previous studies have explored the association between MTHFR polymorphisms and IVF/ICSI outcomes, the results remain contradictory due to inadequate samples, no adjustment for potential confounders and/or the study of C677T and A1298C separately. Few studies have systematically investigated the exact role of MTHFR activity determined by combined C677T/A1298C polymorphisms on the embryological and clinical outcomes of IVF/ICSI. STUDY DESIGN SIZE DURATION This is a retrospective cohort study investigating 1160 women who were referred for MTHFR genotyping and IVF/ICSI treatment at Peking University Third Hospital from May 2017 to May 2020. PARTICIPANTS/MATERIALS SETTING METHODS Women who were referred for MTHFR genotyping and their first IVF/ICSI treatment at our hospital were included and those undergoing preimplantation genetic testing cycles were excluded. The included women were divided into different cohorts according to their C677T, A1298C and combined C677T/A1298C genotypes. The embryological outcomes, including oocytes retrieved, metaphase II oocytes, oocyte maturation rate, normal fertilization rate and transplantable embryo rate, were evaluated by generalized linear regression models. The clinical outcomes, including biochemical pregnancy rate, clinical pregnancy rate and live birth rate, were evaluated by log-binomial regression models. All outcomes were adjusted for potential confounders. MAIN RESULTS AND THE ROLE OF CHANCE Women with the combined 677TT/1298AA genotype (hereafter abbreviated as TT/AA, as with other combined genotypes), whose enzyme activity was the lowest, had a lower oocyte maturation rate compared with those with the wild-type genotype (P = 0.007). Moreover, the oocyte maturation rate decreased linearly with the decline in MTHFR enzyme activity determined by combined C677T/A1298C genotypes (P-trend = 0.001). The combined CC/AC, CC/CC&CT/AA and CT/AC genotypes with intermediate enzyme activity were associated with a lower transplantable embryo rate (P = 0.013, 0.030 and 0.039, respectively). The differences in clinical outcomes between women with wild-type genotype and combined C677T/A1298C variant genotypes were not significant. LIMITATIONS REASONS FOR CAUTION Our study population had comparable embryological outcomes but worse clinical outcomes than other women undergoing IVF/ICSI treatment at our hospital. Therefore, the results related to the clinical outcomes should be generalized with caution. In addition, we did not detect the folate concentration of each patient during pregnancy. However, this might not have much influence on our results because almost all of our study participants took sufficient folic acid around pregnancy. WIDER IMPLICATIONS OF THE FINDINGS We provide a holistic view of the effect of MTHFR C677T and A1298C polymorphisms on the IVF/ICSI outcomes, which can contribute to providing reasonable folic acid supplementation suggestions for women with different MTHFR genotypes, especially for those with a low oocyte maturation rate and/or low embryo quality. STUDY FUNDING/COMPETING INTERESTS This work was funded by the National Natural Science Foundation of China (31871447, and 82101677), the National Key Research and Development Program (2019YFA0801400) and the Natural Science Foundation of Beijing Municipality (7202226). The authors declare that they have no competing interests. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- Yong-Jie Lu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- Key Laboratory of Assisted Reproduction, Peking University, Ministry of Education, Beijing, China
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China
| | - Qin Li
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- Key Laboratory of Assisted Reproduction, Peking University, Ministry of Education, Beijing, China
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China
| | - Li-Xue Chen
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- Key Laboratory of Assisted Reproduction, Peking University, Ministry of Education, Beijing, China
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China
| | - Tian Tian
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- Key Laboratory of Assisted Reproduction, Peking University, Ministry of Education, Beijing, China
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China
| | - Jia Kang
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- Key Laboratory of Assisted Reproduction, Peking University, Ministry of Education, Beijing, China
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China
| | - Yong-Xiu Hao
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- Key Laboratory of Assisted Reproduction, Peking University, Ministry of Education, Beijing, China
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China
| | - Jian-Suo Zhou
- Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China
| | - Yuan-Yuan Wang
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- Key Laboratory of Assisted Reproduction, Peking University, Ministry of Education, Beijing, China
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China
| | - Li-Ying Yan
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- Key Laboratory of Assisted Reproduction, Peking University, Ministry of Education, Beijing, China
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China
| | - Rong Li
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- Key Laboratory of Assisted Reproduction, Peking University, Ministry of Education, Beijing, China
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China
| | - Liang Chang
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- Key Laboratory of Assisted Reproduction, Peking University, Ministry of Education, Beijing, China
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China
| | - Jie Qiao
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- Key Laboratory of Assisted Reproduction, Peking University, Ministry of Education, Beijing, China
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China
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Pavlik R, Hecht S, Noss U, Soldin OP, Mendu RD, Soldin SJ, Lohse P, Thaler CJ. Reduced Steroid Synthesis in the Follicular Fluid of MTHFR 677TT Mutation Carriers: Effects of Increased Folic Acid Administration. Geburtshilfe Frauenheilkd 2022; 82:1074-1081. [PMID: 36186148 PMCID: PMC9525144 DOI: 10.1055/a-1791-9358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 07/24/2022] [Indexed: 10/27/2022] Open
Abstract
Objective To compare steroid profiles in the follicular fluid (FF) from women homozygous for the methylenetetrahydrofolate reductase (MTHFR) 677C>T mutation and wildtype controls and to correlate it with the folic acid administration scheme applied at the time of oocyte retrieval. Design Retrospective single center study. Subjects and Methods Infertile patients treated by using assisted reproductive techniques were genotyped routinely for the MTHFR 677C>T mutation. In 2006 they had received folic acid supplementation doses of 400 µg daily per os. This group was designated Group-400 (n = 10). From 2008 onwards, all of our infertility patients received a daily dose of 800 µg folic acid per os. Women from this group were designated Group-800 (n = 28). FF were collected and a panel of steroid hormones (estradiol, estrone, estriol, cortisol, progesterone, 17-OH progesterone, testosterone, androstenedione, aldosterone, DHEA, and DHEA-S) was measured by isotope dilution liquid chromatography-tandem mass spectrometry employing atmospheric pressure photo ionization (APPI). Results In Group-400, the FF hormone profile confirmed a significant reduction of estradiol in homozygous 677TT carriers (0.52 ± 0.08-fold, exact p = 0.032) and for the first time also revealed significantly reduced estriol concentrations in these individuals (0.54 ± 0.05-fold, p = 0.016), as compared to wildtype controls. In Group-800, no significant differences were found for concentrations of any of the steroid hormones between homozygous 677TT carriers and wildtype controls. Conclusions The current findings support and extend previous reports on reduced concentrations of specific steroid hormones in follicular fluids of homozygous MTHFR 677C>T mutation carriers. The restoration of the FF hormone profile by elevated-dose folic acid supplementation might impact performing ART in infertile women with the MTHFR 677TT-genotype. Further adequately powered studies are necessary to verify our finding and to demonstrate the clinical effect of enhanced folic supplementation on ovarian function.
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Affiliation(s)
- Roman Pavlik
- Department of Obstetrics and Gynecology and Center for Gynecological Endocrinology and Reproductive Medicine, University Hospital, Ludwig-Maximilians University, Munich,
Germany,TFP Fertility Wels, Wels, Austria
| | - Stephanie Hecht
- Department of Obstetrics and Gynecology and Center for Gynecological Endocrinology and Reproductive Medicine, University Hospital, Ludwig-Maximilians University, Munich,
Germany,Practice for Obstetrics and Gynecology, Erfurt, Germany
| | - Ulrich Noss
- Centre for Reproductive Medicine, Munich, Germany
| | - Offie P. Soldin
- Division of Endocrinology and Metabolism, Georgetown University Medical Center, Washington, D.C., USA
| | - Rao D. Mendu
- Division of Endocrinology and Metabolism, Georgetown University Medical Center, Washington, D.C., USA
| | - Steven J. Soldin
- Division of Endocrinology and Metabolism, Georgetown University Medical Center, Washington, D.C., USA
| | - Peter Lohse
- Department of Clinical Chemistry, University Hospital, Ludwig-Maximilians University, Munich, Germany
| | - Christian J. Thaler
- Department of Obstetrics and Gynecology and Center for Gynecological Endocrinology and Reproductive Medicine, University Hospital, Ludwig-Maximilians University, Munich,
Germany,Korrespondenzadresse Univ.-Prof. Dr. med. Christian J. Thaler, M.I.A.C., F.C.R.I. University Hospital, Ludwig-Maximilians University, Department of Obstetrics and
Gynecology and Center for Gynecological Endocrinology and Reproductive MedicineMarchioninistraße 1581377
MunichGermany
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Vagnini LD, Renzi A, Petersen CG, Dieamant F, Oliveira JBA, Canas MDCT, Franco Junior JG, Oliani AH. Correlation of TP53 (rs1625895), TP73 (rs3765730), MMP9 (rs17576), and MTHFR (rs868014) polymorphisms with low ovarian reserve. Eur J Obstet Gynecol Reprod Biol 2021; 269:132-137. [PMID: 34953598 DOI: 10.1016/j.ejogrb.2021.08.034] [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: 09/22/2020] [Revised: 06/18/2021] [Accepted: 08/26/2021] [Indexed: 01/09/2023]
Abstract
OBJECTIVE To investigate the influence of the Single Nucleotide Polymorphisms (SNPs) TP53 rs1625895, TP73 rs3765730, MMP9 rs17576, and MTHFR rs868014 on ovarian reserve (OR) in infertile patients. STUDY DESIGN A prospective cross-sectional study was carried out in 145 infertile women. The patients were divided into two groups according to ovarian reserve, characterized by association between AMH levels and AFC:After patient distribution, both groups were compared (LOR X NOR) regarding the genotypes of the SNPs TP53 T/C rs1625895, TP73 G/A rs3765730, MMP9 Gln/Arg rs17576, and MTHFR A/G rs868014. RESULT(S) The frequency of the TP53-T/T genotype was greater in the LOR and the TP53-C/C genotype was more frequent in patients with NOR. This association was confirmed by the frequency of alleles, where the presence of the T allele was significantly higher in patients who exhibited LOR (P = 0.0003). The frequency of the TP73-G/G genotype and of the G allele was higher in the LOR group (P = 0.01). Considering the MMP9 gene, the frequency of the Gln/Gln genotype was higher in the LOR group. However, the Gln/Arg genotype and the Arg allele prevailed in the NOR group (P = 0.006). The frequency of the MTHFR-A/A genotype was higher in the LOR group, whereas that of the MTHFR-GG genotype was higher in the NOR group. The presence of allele A was significantly higher in the LOR group (P = 0.002). The regression analysis shows that patients who present the TP53-T/T, TP73-G/G, MMP9-Gln/Gln, and MTHFR-A/A genotypes are 3.6X, 3.1X, 3.2X, and 3.7X more likely of having LOR, respectively. In addition, the association of the TP53/TT + TP73/GG genotypes increased the chance of women being included in the LOR group in 5.7-fold. CONCLUSION(S) The genotypes TP53-T/T, TP73-G/G, MMP9-Gln/Gln, and MTHFR-A/A increase the chance of women to exhibit LOR. These polymorphisms could be useful as genetic markers of low ovarian reserve in infertile patients.
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Affiliation(s)
- Laura D Vagnini
- Paulista Centre for Diagnosis Research and Training, CPDP, Ribeirao Preto, Brazil.
| | - Adriana Renzi
- Paulista Centre for Diagnosis Research and Training, CPDP, Ribeirao Preto, Brazil
| | - Cláudia G Petersen
- Paulista Centre for Diagnosis Research and Training, CPDP, Ribeirao Preto, Brazil; Centre for Human Reproduction Prof Franco Jr, Ribeirao Preto, Brazil
| | - Felipe Dieamant
- Centre for Human Reproduction Prof Franco Jr, Ribeirao Preto, Brazil
| | - João Batista A Oliveira
- Paulista Centre for Diagnosis Research and Training, CPDP, Ribeirao Preto, Brazil; Centre for Human Reproduction Prof Franco Jr, Ribeirao Preto, Brazil
| | | | - José G Franco Junior
- Paulista Centre for Diagnosis Research and Training, CPDP, Ribeirao Preto, Brazil; Centre for Human Reproduction Prof Franco Jr, Ribeirao Preto, Brazil
| | - Antônio H Oliani
- São José do Rio Preto School of Medicine FAMERP, Sao Jose do Rio Preto, Brazil
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7
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Ledowsky C, Steel A, Schloss J. Methylenetetrahydrofolate Reductase (MTHFR) genetic polymorphisms and the risk of infertility in couples accessing Assisted Reproductive technologies: a systematic review. ADVANCES IN INTEGRATIVE MEDICINE 2021. [DOI: 10.1016/j.aimed.2021.05.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Shahrokhi SZ, Kazerouni F, Ghaffari F, Hadizadeh M, Zolfaghary Z. The effect of A1298c polymorphism of the MTHFR gene on anti-Müllerian hormone levels: experimental and Web-based analysis. J Clin Lab Anal 2021; 35:e23948. [PMID: 34369004 PMCID: PMC8418515 DOI: 10.1002/jcla.23948] [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: 03/28/2021] [Revised: 07/21/2021] [Accepted: 07/29/2021] [Indexed: 11/24/2022] Open
Abstract
Background The 5,10‐methylenetetrahydrofolate reductase (MTHFR) is an important enzyme of folate and methionine metabolism, which is expressed in human oocytes and preimplantation. Due to the involvement of MTHFR in female reproduction, we tend to evaluate the influence of MTHFR A1298C polymorphism on ovarian marker reserves such as serum anti‐Müllerian hormone (AMH) levels in women after in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI). Methods A total of 100 women, who underwent ART treatment due to male factor infertility, were recruited into this study. MTHFR A1298C polymorphism was detected by polymerase chain reaction‐restriction fragment length polymorphism (PCR‐RFLP) technique, and serum AMH concentrations were measured by an ultrasensitive enzyme‐linked immunosorbent assay (ELISA). Results Women with the CC genotype had higher AMH levels (4.15 ± 1.67 ng/ml), albeit not significant, than carriers with other genotypes after ovarian stimulation. No significant differences existed in terms of miscarriage and live birth rates among different genotype groups. Conclusion The presence of the C mutant allele of the 1298 polymorphism in the MTHFR gene led to an increasing trend in serum AMH concentrations; however, the numbers of oocytes retrieved decreased in women with mutated genotypes. The influence of the MTHFR C677T polymorphism on embryo quality and pregnancy rate after ART cycles remains unclear.
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Affiliation(s)
- Seyedeh Zahra Shahrokhi
- Department of Laboratory Medicine, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Faranak Kazerouni
- Department of Laboratory Medicine, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Firouzeh Ghaffari
- Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Morteza Hadizadeh
- Physiology Research Center, Institute of Basic and Clinical Physiology Sciences, Kerman University of Medical Sciences, Kerman, Iran
| | - Zahra Zolfaghary
- Reproductive Epidemiology Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
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Effect of polymorphisms of MTHFR in controlled ovarian stimulation: a systematic review and meta-analysis. J Assist Reprod Genet 2021; 38:2237-2249. [PMID: 34032987 DOI: 10.1007/s10815-021-02236-8] [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: 04/14/2021] [Accepted: 05/12/2021] [Indexed: 10/21/2022] Open
Abstract
OBJECTIVE Although several studies have reported a potential impact of methylenetetrahydrofolate reductase (MTHFR) polymorphisms on controlled ovarian stimulation (COS), the results remain controversial. The aim of the systematic review and meta-analysis was to evaluate the effect of MTHFR polymorphism on COS outcomes. METHODS PubMed, Web of Science, Embase, and Cochrane Central Register of Controlled Trials databases were searched up to December 2, 2020. COS clinical outcomes based on gene polymorphisms were included. Two reviewers independently extracted the data. The primary outcome was the number of oocytes retrieved. The secondary outcomes were the number of metaphase II (MII) oocytes, stimulation duration, basal follicle-stimulating hormone (FSH) level, FSH dosage, positive pregnancy test, ongoing pregnancy rate, clinical pregnancy rate, miscarriage rate, and live birth rate. Meta-analysis was performed using a fixed-effect model or random-effect model with Review Man 5.3.5. Mean difference (MD) with 95% confidence intervals (95%CIs) was calculated for continuous outcomes. The quality assessment of included studies was evaluated by using the Newcastle-Ottawa Scale. RESULTS Eleven studies were included in the systematic review, and seven studies with 2015 participants were included in the meta-analysis. Basal FSH level was significantly lower in CC homozygotes than TT homozygotes (four studies, 867 participants, MD - 0.54, 95%CI - 0.85 to - 0.23, P = 0.0006; I2 = 0%) of MTHFR (rs1801133). FSH dose was significantly fewer in CC homozygotes compared with CT heterogeneous (three studies, 949 participants, MD - 75.78, 95%CI - 135.23 to - 16.33, P = 0.01; I2 = 32%) or CT/TT model (three studies, 1097 participants, MD - 80.18, 95%CI - 135.54 to - 24.81, P = 0.005; I2 = 42%). Differences in the oocytes retrieved and stimulation duration were insignificant. Gene variants on MTHFR (rs1801133) and MTHFR (rs1801131) were reported in ongoing pregnancy rate, clinical pregnancy rate, and live birth rate. CONCLUSION Studies to date indicate that polymorphisms of MTHFR could influence basal FSH level and FSH dose. The results could be useful to promote clinical practice on COS protocols. Further studies are needed to evaluate the clinical relevance of the multigene combination on COS.
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Borjian Boroujeni P, Zamanian MR, Roodgar Saffari J, Mohseni Meybodi A. The association between thrombophilic genes alterations and poor ovarian response in infertile women: a retrospective case-control study. J OBSTET GYNAECOL 2021; 42:127-132. [PMID: 33938361 DOI: 10.1080/01443615.2021.1871885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
This research aimed to retrospectively investigate the possible association between poor ovarian stimulation and selected thrombophilia markers in Iranian women with infertility. For this study 100 Iranian infertile women, with a history of at least three Assisted Reproduction Technology (ART) failures (50 with a poor ovarian response and 50 with a normal response), referred to Royan Institute were selected. Targeted genetic variation evaluation for Factor V G1691A, F II Prothrombin G20210A, MTHFR C677T, MTHFR A1298C was performed by PCR-RFLP followed by Sanger Sequencing. The association between these variants and the ovarian response was examined. The results showed an association between Factor V G1691A mutation and poor ovarian response. The heterozygosity rate of the FVL was significantly different between poor responders compared with the normal response group (p-value ≤ 0.05). In conclusion screening of this polymorphism can be used as a genetic determinant of ovarian response functioning through a vascular mechanism. A larger study with bigger sample size is recommended.Impact statementWhat is already known on this subject? Thrombophilia is a multi-genetic disease that is associated with changes in homeostatic mechanisms. Some studies have suggested that thrombophilia has no relationship with poor ovarian response and reduced ovarian reserve in general infertile population undergoing ART.What do the results of this study add? Our results showed a significant association between the FVL heterozygote mutation and poor ovarian response.What are the implications of these findings for clinical practice and/or further research? Screening of FVL polymorphism may be suggested as a predictive test for ovarian stimulation response in infertile women undergoing ART. Further prospective studies with bigger sample size evaluating other thrombophilia markers and ovarian response, as well as further in-vitro studies may help clarify the biological mechanisms behind the effect of the FVL polymorphism on ovarian response, oocyte quality and embryo quality.
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Affiliation(s)
- Parnaz Borjian Boroujeni
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Mohammad Reza Zamanian
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Javad Roodgar Saffari
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Anahita Mohseni Meybodi
- Department of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
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Ghaderian SMH, Akbarzadeh R, Mohajerani F, Khodaii Z, Salehpour S. The implication of single-nucleotide polymorphisms in ovarian hyperstimulation syndrome. Mol Reprod Dev 2019; 86:964-971. [PMID: 31115963 DOI: 10.1002/mrd.23171] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 04/23/2019] [Accepted: 04/29/2019] [Indexed: 01/05/2023]
Abstract
Ovarian hyperstimulation syndrome (OHSS) is an undesirable complication in the course of ovarian stimulation. This kind of stimulation is aimed at acquiring a sufficient number of high-quality oocytes in in vitro fertilization (IVF). Whereas the predisposition to OHSS could be impacted by genetic polymorphisms in susceptible genes, the present study has been jointly conducted with an Iranian cohort to scrutinize its relevant implication. Genomic DNA was extracted from blood samples of patients with a normal ovarian response (NOR) or with OHSS. Samples were analyzed to detect polymorphisms MTHFR rs1801131, MTHFR rs1801133, AMHR2 rs2002555, LHCGR rs2293275, PGR rs10895068, and SERPINE1 rs1799889. Variations of MTHFR, AMHR2, LHCGR, and PGR genes were significantly associated with the developing OHSS. After correction for multiple analysis, this difference was not evident for PGR genotypes. The polymorphic alleles of MTHFR (rs1801131 C-allele and rs1801133 T-allele), AMHR2 (rs2002555 G-allele), and LHCGR (rs2293275 G-allele) were significantly more prevalent among patients with OHSS compared to those in the NOR group. In contrast, the minor allele of PGR single-nucleotide polymorphism (SNP) (rs10895068, A-allele) was more prominent among patients with a NOR than those with OHSS. No significant difference was observed in genotypes or alleles of SERPINE1 rs1799889. The observations indicated that the minor alleles of MTHFR, AMHR2, and LHCGR genes could be considered an independent risk factor in susceptibility to OHSS. Nevertheless, polymorphic allele in the PGR rs10895068 SNP contributes to preventing OHSS occurrence. Therefore, it can be argued that these genes have a significant impact on OHSS.
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Affiliation(s)
| | - Reza Akbarzadeh
- Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Institute of Anatomy, University of Lübeck, Lübeck, Germany
| | - Fatemeh Mohajerani
- Department of Genetics, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran
| | - Zohreh Khodaii
- Dietary Supplements and Probiotics Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Saghar Salehpour
- Preventative Gynecology Research Center (PGRC), Shahid Beheshti University of Medical Sciences, Tehran, Iran
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12
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Zeng S, Wang X, Wang Y, Xu Z, Zhang J, Liu W, Qian L, Chen X, Wei J, Yang X, Gong Z, Yan Y. MTHFR C677T polymorphism is associated with follicle-stimulating hormone levels and controlled ovarian hyperstimulation response: a retrospective study from the clinical database. Fertil Steril 2019; 111:982-990.e2. [PMID: 30922641 DOI: 10.1016/j.fertnstert.2019.01.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 01/10/2019] [Accepted: 01/10/2019] [Indexed: 02/08/2023]
Abstract
OBJECTIVE To evaluate the impact of methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism with clinical data analysis in controlled ovarian hyperstimulation (COH) of infertile women in the Intravenous Infusion Safety Evaluation Center of Hunan Province, People's Republic of China. DESIGN Genetic Association Study. SETTING Reproductive medicine clinical. PATIENT(S) This genetic association study included 722 infertile women who received the standard long treatment protocol with accessible and complete electronic medical records. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) The clinical parameters were obtained from the Intravenous Infusion Safety Evaluation center. RESULT(S) Basal FSH levels in the TT group were significantly higher than those of the CC group. The FSH levels after down-regulation in the TT group were higher than those of CC/CT genotypes. The TT genotype patients received significantly higher total doses of GnRH agonist and FSH compared with CC/CT genotypes, whereas the total dose of hCG was higher in the CT genotypes compared with the CC/TT genotypes. Further association analysis between hormone levels and COH outcomes indicated significantly negative correlation of basal FSH levels with antral follicle count and number of oocytes as well as the down-regulation FSH levels with the number of metaphase II oocytes and oocytes. CONCLUSION(S) The MTHFR C677T polymorphism was associated with high doses of ovarian stimulation medications, as well as higher FSH levels. The negative correlation between FSH levels and the number of oocytes suggested that C677T polymorphism may play a role in the poor prognosis of COH oocytes. This needs to be studied in future prospective studies with longer follow-up.
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Affiliation(s)
- Shuangshuang Zeng
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China; Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Xiang Wang
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China; Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Yonggang Wang
- Reproductive Medicine Center, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Zhijie Xu
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Jingping Zhang
- Reproductive Medicine Center, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Wanli Liu
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China; Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Long Qian
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China; Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Xi Chen
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China; Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Jie Wei
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China; Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Xue Yang
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China; Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Zhicheng Gong
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China; Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China.
| | - Yuanliang Yan
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China; Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
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13
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Metabolomic profiling of ovary in mice treated with FSH using ultra performance liquid chromatography/mass spectrometry. Biosci Rep 2018; 38:BSR20180965. [PMID: 30287502 PMCID: PMC6246768 DOI: 10.1042/bsr20180965] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Revised: 09/08/2018] [Accepted: 09/20/2018] [Indexed: 01/08/2023] Open
Abstract
The growth and development of follicles are a very complex physiological process that is regulated by endocrine, autocrine and paracrine mechanisms. The effect of small molecules in follicular microenvironment on follicular growth and development has not been clearly analyzed. In the present study, the metabolic changes in ovaries of FSH-stimulated mice were investigated. Metabolomic profiling of ovary stimulated by FSH were analyzed by ultra-performance liquid chromatography/mass spectrometry and characterized by principal components analysis and orthogonal partial least squares discriminant analysis. Multivariate statistical analysis identified 21 differentially metabolites in positive ion mode and 12 in negative ion mode in the FSH-treated mice compared with the control mice. These results indicated that various types of phosphatidylcholine were changed. Furthermore, the levels of L-Glutamyl 5-phosphate, N-Acetyl-L-aspartic acid, 4-fumarylacetoacetic acid, adenylylselenate and 5′-Methylthioadenosine in the ovaries of the FSH-stimulated mice were decreased. However, the levels of 19-hydroxytestosterone and 5,10-methenyltetrahydrofolic acid were significantly increased in the positive ion mode and negative ion mode, respectively. Thirty-three differential metabolites including fatty acid metabolism, amino acid metabolism and lipid metabolism in the ovaries of mice were affected by FSH injection. The findings of our study provide a new insight into understanding the follicular development.
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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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15
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Shahrokhi SZ, Kazerouni F, Ghaffari F. Anti-Müllerian Hormone: genetic and environmental effects. Clin Chim Acta 2018; 476:123-129. [DOI: 10.1016/j.cca.2017.11.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 11/20/2017] [Accepted: 11/22/2017] [Indexed: 02/08/2023]
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16
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Hou N, Chen S, Chen F, Jiang M, Zhang J, Yang Y, Zhu B, Bai X, Hu Y, Huang H, Xu C. Association between premature ovarian failure, polymorphisms in MTHFR and MTRR genes and serum homocysteine concentration. Reprod Biomed Online 2016; 32:407-13. [PMID: 26874989 DOI: 10.1016/j.rbmo.2016.01.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 01/18/2016] [Accepted: 01/19/2016] [Indexed: 12/16/2022]
Abstract
This study investigated the association between premature ovarian failure (POF), MTHFR C677T/A1298C and MTRR A66G genotypes and serum homocysteine (Hcy) concentration. A prospective study was conducted in Chinese women, which included POF patients (n = 180) and controls (n = 195). Peripheral blood samples were used to determine MTHFR C677T/A1298C and MTRR A66G genotypes, and serum Hcy and sex hormone concentrations. Results showed that serum Hcy concentrations of POF patients were significantly higher than those of controls (P < 0.0001). In POF patients, serum Hcy concentrations were significantly correlated with oestradiol and FSH concentrations (r = -0.174, P = 0.037 and r = +0.238, P = 0.006, respectively). There were no significant differences in the distributions of MTHFR C677T/A1298C or MTRR A66G genotypes between the two groups. However, these genetic variants influenced serum Hcy concentrations in POF patients, especially for MTRR 66 AA/AG/GG genotypes, which were significantly correlated with the patients' Hcy concentrations (τ = 0.166, P = 0.033). These results suggest that serum Hcy concentrations in Chinese POF patients are increased and correlated with serum oestradiol/FSH concentrations. In conclusion, MTHFR C667T/A1298C and MTRR A66G genotypes are not associated with POF development, but they affect the patients' serum Hcy concentrations.
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Affiliation(s)
- Ningning Hou
- Key Laboratory of Reproductive Genetics, Ministry of Education (Zhejiang University), Hangzhou 310006, China; Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Songchang Chen
- Key Laboratory of Reproductive Genetics, Ministry of Education (Zhejiang University), Hangzhou 310006, China; International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Feng Chen
- Key Laboratory of Reproductive Genetics, Ministry of Education (Zhejiang University), Hangzhou 310006, China; Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Minmin Jiang
- Institute of Public Administration, Zhejiang Normal University, Hangzhou 310012, China
| | - Junyu Zhang
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Yanmei Yang
- Key Laboratory of Reproductive Genetics, Ministry of Education (Zhejiang University), Hangzhou 310006, China; Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Bo Zhu
- Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Xiaoxia Bai
- Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Yuting Hu
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Hefeng Huang
- Key Laboratory of Reproductive Genetics, Ministry of Education (Zhejiang University), Hangzhou 310006, China; International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China.
| | - Chenming Xu
- Key Laboratory of Reproductive Genetics, Ministry of Education (Zhejiang University), Hangzhou 310006, China; International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China.
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Zhang H, Liu C, Han YC, Ma Z, Zhang H, Ma Y, Liu X. Genetic variations in the one-carbon metabolism pathway genes and susceptibility to hepatocellular carcinoma risk: a case-control study. Tumour Biol 2014; 36:997-1002. [PMID: 25318605 DOI: 10.1007/s13277-014-2725-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 10/07/2014] [Indexed: 12/13/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the sixth common cancer and the third common cause of cancer mortality worldwide. However, the exact molecular mechanism of HCC remains uncertain. Many enzymes are involved in one-carbon metabolism (OCM), and single nucleotide polymorphisms (SNPs) in the corresponding genes may play a role in liver carcinogenesis. In this study, we enrolled 1500 HCC patients and 1500 cancer-free controls, which were frequency-matched by age, gender, and HBV infection status. Then eight SNPs from seven OCM genes (MTHFR, MTR, MTRR, FTHFD, GART, SHMT, and CBS) were evaluated. Results showed that six SNPs (MTHFR rs1801133, MTRR rs2287780, MTRR rs10380, FTHFD rs1127717, GART rs8971, and SHMT rs1979277) were significantly associated with HCC risk in Chinese population, with P values range from 2.26 × 10(-4) to 0.035). The most significant association was detected for GART rs8971. Compared with individuals with the TT genotype, the age- and sex-adjusted odds ratio (OR) for developing HCC was 1.44 (95% confidence interval (CI): 1.03-2.02) among those with the CC genotype and 1.30 (95% CI: 1.10-1.53) for those with CT genotype. Under the log-additive model, each additional copy of minor allele C was associated with a 1.28-fold increased risk of HCC (OR = 1.28, 95% CI: 1.12-1.45). These findings indicated that genetic variants in OCM genes might contribute to HCC susceptibility.
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Affiliation(s)
- Heng Zhang
- China Medical University, Shenyang, China
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Thaler CJ. Folate Metabolism and Human Reproduction. Geburtshilfe Frauenheilkd 2014; 74:845-851. [PMID: 25278626 DOI: 10.1055/s-0034-1383058] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 08/13/2014] [Accepted: 08/14/2014] [Indexed: 10/24/2022] Open
Abstract
Folate metabolism affects ovarian function, implantation, embryogenesis and the entire process of pregnancy. In addition to its well-established effect on the incidence of neural tube defects, associations have been found between reduced folic acid levels and increased homocysteine concentrations on the one hand, and recurrent spontaneous abortions and other complications of pregnancy on the other. In infertility patients undergoing IVF/ICSI treatment, a clear correlation was found between plasma folate concentrations and the incidence of dichorionic twin pregnancies. In patients supplemented with 0.4 mg/d folic acid undergoing ovarian hyperstimulation and oocyte pick-up, carriers of the MTHFR 677T mutation were found to have lower serum estradiol concentrations at ovulation and fewer oocytes could be retrieved from them. It appears that these negative effects can be compensated for in full by increasing the daily dose of folic acid to at least 0.8 mg. In carriers of the MTHFR 677TT genotype who receive appropriate supplementation, AMH concentrations were found to be significantly increased, which could indicate a compensatory mechanism. AMH concentrations in homozygous carriers of the MTHFR 677TT genotype could even be overestimated, as almost 20 % fewer oocytes are retrieved from these patients per AMH unit compared to MTHFR 677CC wild-type individuals.
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Affiliation(s)
- C J Thaler
- Department and Outpatient Clinic for Gynaecology and Obstetrics, Hospital of the Ludwig Maximilian University of Munich, Großhadern Campus, Hormone & Fertility Centre Großhadern, Munich ; Department and Outpatient Clinic for Gynaecology and Obstetrics, Hospital of the Ludwig Maximilian University of Munich, City Centre Campus, Hormone & Fertility Centre City Centre, Munich
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Abstract
This chapter presents an overview of the gene polymorphisms underlying the functions of ovarian receptors and their clinical implications in the female fecundity. A selection of genetic studies revealing significant associations between receptor polymorphisms, gene mutations, and some pathological conditions (i.e., female infertility, premature ovarian failure, polycystic ovary syndrome, endometriosis) are reviewed.
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Affiliation(s)
- Livio Casarini
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Via Universtita 4, Modena, 41121, Italy
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20
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Association of methylenetetrahydrofolate reductase (MTHFR 677C>T) and thymidylate synthase (TSER and TS 1494del6) polymorphisms with premature ovarian failure in Korean women. Menopause 2012; 19:1260-6. [DOI: 10.1097/gme.0b013e3182556b08] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Marci R, Lisi F, Soave I, Lo Monte G, Patella A, Caserta D, Moscarini M. Impact of 677C>T Mutation of the 5,10-Methylenetetrahydrofolate Reductase on IVF Outcome: Is Screening Necessary for All Infertile Women? Genet Test Mol Biomarkers 2012; 16:1011-4. [DOI: 10.1089/gtmb.2012.0087] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Roberto Marci
- Department of Biomedical Sciences and Advanced Therapies, University of Ferrara, Ferrara, Italy
| | - Franco Lisi
- CERMER, Centro Ricerca Medicina della Riproduzione, Clinica Villa Mafalda, Rome, Italy
| | - Ilaria Soave
- Department of Biomedical Sciences and Advanced Therapies, University of Ferrara, Ferrara, Italy
| | - Giuseppe Lo Monte
- Department of Biomedical Sciences and Advanced Therapies, University of Ferrara, Ferrara, Italy
| | - Alfredo Patella
- Department of Biomedical Sciences and Advanced Therapies, University of Ferrara, Ferrara, Italy
| | - Donatella Caserta
- Department of Woman Health and Territory's Medicine, University of Rome Sapienza, S. Andrea Hospital, Rome, Italy
| | - Massimo Moscarini
- Department of Woman Health and Territory's Medicine, University of Rome Sapienza, S. Andrea Hospital, Rome, Italy
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Boudjenah R, Molina-Gomes D, Torre A, Bergere M, Bailly M, Boitrelle F, Taieb S, Wainer R, Benahmed M, de Mazancourt P, Selva J, Vialard F. Genetic polymorphisms influence the ovarian response to rFSH stimulation in patients undergoing in vitro fertilization programs with ICSI. PLoS One 2012; 7:e38700. [PMID: 22701696 PMCID: PMC3372493 DOI: 10.1371/journal.pone.0038700] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2012] [Accepted: 05/11/2012] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Obtaining an adequate number of high-quality oocytes is a major challenge in controlled ovarian hyperstimulation (COH). To date, a range of hormonal and clinical parameters have been used to optimize COH but none have significant predictive value. This variability could be due to the genetic predispositions of single-nucleotide polymorphisms (SNPs). Here, we assessed the individual and combined impacts of thirteen SNPs that reportedly influence the outcome of in vitro fertilisation (IVF) on the ovarian response to rFSH stimulation for patients undergoing intracytoplasmic sperm injection program (ICSI). RESULTS Univariate analysis revealed that only FSHR, ESR2 and p53 SNPs influenced the number of mature oocytes. The association was statistically significant for FSHR (p=0.0047) and ESR2 (0.0017) in the overall study population and for FSHR (p=0.0009) and p53 (p=0.0048) in subgroup that was more homogeneous in terms of clinical variables. After Bonferroni correction and a multivariate analysis, only the differences for FSHR and ESR2 polymorphisms were still statistically significant. In a multilocus analysis, only the FSHR and AMH SNP combination significantly influenced oocyte numbers in both population (p<0.01). DISCUSSION We confirmed the impact of FSHR and ESR2 polymorphisms on the IVF outcome. Furthermore, we showed for the first time that a p53 polymorphism (which is already known to impact embryo implantation) could influence the ovarian response. However, given that this result lost its statistical significance after multivariate analysis, more data are needed to draw firm conclusions. Only the FSHR and AMH polymorphism combination appears to influence mature oocyte numbers but this finding also needs to be confirmed. MATERIALS AND METHODS A 13 gene polymorphisms: FSHR(Asn680Ser), p53(Arg72Pro), AMH(Ile49Ser), ESR2(+1730G>A), ESR1(-397T>C), BMP15(-9C>G), MTHFR1(677C>T), MTHFR2(1298A>C), HLA-G(-725C>G), VEGF(+405G>C), TNFα(-308A>G), AMHR(-482 A>G), PAI-1 (4 G/5 G), multiplex PCR assay was designed to genotype women undergoing ICSI program. We analyzed the overall study population (n=427) and a subgroup with homogeneous characteristics (n=112).
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Affiliation(s)
- Radia Boudjenah
- Department of Reproductive Biology, Cytogenetics, Gynaecology and Obstetrics, Poissy Saint Germain Medical Centre, Poissy, France
- EA 2493, Versailles Saint Quentin University, Versailles, France
| | - Denise Molina-Gomes
- Department of Reproductive Biology, Cytogenetics, Gynaecology and Obstetrics, Poissy Saint Germain Medical Centre, Poissy, France
- EA 2493, Versailles Saint Quentin University, Versailles, France
| | - Antoine Torre
- Department of Reproductive Biology, Cytogenetics, Gynaecology and Obstetrics, Poissy Saint Germain Medical Centre, Poissy, France
- EA 2493, Versailles Saint Quentin University, Versailles, France
| | - Marianne Bergere
- Department of Reproductive Biology, Cytogenetics, Gynaecology and Obstetrics, Poissy Saint Germain Medical Centre, Poissy, France
- EA 2493, Versailles Saint Quentin University, Versailles, France
| | - Marc Bailly
- Department of Reproductive Biology, Cytogenetics, Gynaecology and Obstetrics, Poissy Saint Germain Medical Centre, Poissy, France
- EA 2493, Versailles Saint Quentin University, Versailles, France
| | - Florence Boitrelle
- Department of Reproductive Biology, Cytogenetics, Gynaecology and Obstetrics, Poissy Saint Germain Medical Centre, Poissy, France
- EA 2493, Versailles Saint Quentin University, Versailles, France
| | - Stéphane Taieb
- EA 2493, Versailles Saint Quentin University, Versailles, France
| | - Robert Wainer
- Department of Reproductive Biology, Cytogenetics, Gynaecology and Obstetrics, Poissy Saint Germain Medical Centre, Poissy, France
- EA 2493, Versailles Saint Quentin University, Versailles, France
| | - Mohamed Benahmed
- Department of Reproductive Biology, Nice University Hospital, Nice, France
| | | | - Jacqueline Selva
- Department of Reproductive Biology, Cytogenetics, Gynaecology and Obstetrics, Poissy Saint Germain Medical Centre, Poissy, France
- EA 2493, Versailles Saint Quentin University, Versailles, France
| | - François Vialard
- Department of Reproductive Biology, Cytogenetics, Gynaecology and Obstetrics, Poissy Saint Germain Medical Centre, Poissy, France
- EA 2493, Versailles Saint Quentin University, Versailles, France
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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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Folate-metabolizing gene variants and pregnancy outcome of IVF. Reprod Biomed Online 2011; 22:603-14. [DOI: 10.1016/j.rbmo.2011.03.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 02/23/2011] [Accepted: 03/01/2011] [Indexed: 11/18/2022]
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Pavlik R, Hecht S, Ochsenkühn R, Noss U, Lohse P, Thaler CJ. Divergent effects of the 677C>T mutation of the 5,10-methylenetetrahydrofolate reductase (MTHFR) gene on ovarian responsiveness and anti-Müllerian hormone concentrations. Fertil Steril 2011; 95:2257-62. [PMID: 21481373 DOI: 10.1016/j.fertnstert.2011.03.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Revised: 03/04/2011] [Accepted: 03/08/2011] [Indexed: 10/18/2022]
Abstract
OBJECTIVE To investigate the influence of the 5,10-methylenetetrahydrofolate reductase (MTHFR) 677C>T mutation on serum anti-Müllerian hormone (AMH) concentrations and on the numbers of oocytes retrieved (NOR) following controlled ovarian hyperstimulation (COH). DESIGN Prospective cohort study. SETTING University-based infertility clinic. PATIENT(S) Two hundred and seventy women undergoing COH for IVF with or without intracytoplasmic sperm injection. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) AMH levels were determined from blood samples collected after 10 days of GnRH superagonist treatment and before COH. The MTHFR 677C>T genotype was characterized by a TaqMan 5' nuclease assay. RESULT(S) AMH serum concentrations correlated significantly with the NOR in all individuals studied. Average (±SD) AMH levels of TT carriers (2.85±2.23 ng/mL) were significantly higher than those of homozygous CC (1.91±1.59 ng/mL) or heterozygous CT individuals (2.23±1.74 ng/mL). When evaluated by multiple regression analysis, AMH had a significant positive effect on NOR, whereas age and MTHFR 677TT genotype had significant negative effects. CONCLUSION(S) The MTHFR 677TT genotype is associated with higher serum AMH concentrations and has a negative effect on NOR. This apparent paradox might be resolved in light of recent findings describing a negative feedback function of AMH in the coordination of follicle development.
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Affiliation(s)
- Roman Pavlik
- Department of Obstetrics and Gynecology-Innenstadt, Ludwig-Maximilians University, Munich, Germany
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Casadei L, Puca F, Privitera L, Zamaro V, Emidi E. Inherited thrombophilia in infertile women: implication in unexplained infertility. Fertil Steril 2010; 94:755-7. [PMID: 19939360 DOI: 10.1016/j.fertnstert.2009.10.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2009] [Revised: 10/04/2009] [Accepted: 10/07/2009] [Indexed: 10/20/2022]
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Kara E, Simoni M. Genetic screening for infertility: When should it be done? MIDDLE EAST FERTILITY SOCIETY JOURNAL 2010. [DOI: 10.1016/j.mefs.2010.06.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Laanpere M, Altmäe S, Stavreus-Evers A, Nilsson TK, Yngve A, Salumets A. Folate-mediated one-carbon metabolism and its effect on female fertility and pregnancy viability. Nutr Rev 2010; 68:99-113. [PMID: 20137055 DOI: 10.1111/j.1753-4887.2009.00266.x] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
This review summarizes current knowledge of the effect of folate-mediated one-carbon metabolism and related genetic variants on female fertility and pregnancy viability. Insufficient folate status disrupts DNA methylation and integrity and increases blood homocysteine levels. Elevated levels of follicular fluid homocysteine correlate with oocyte immaturity and poor early embryo quality, while methylenetetrahydrofolate reductase (MTHFR) gene variants are associated with lower ovarian reserves, diminished response to follicular stimulation, and reduced chance of live birth after in vitro fertilization. Embryos carrying multiple MTHFR variants appear to have a selective disadvantage; however, the heterozygous MTHFR 677CT genotype in the mother and fetus provides the greatest chance for a viable pregnancy and live birth, possibly due to a favorable balance in folate cofactor distribution between methyl donor and nucleotide synthesis. The results of previous studies clearly emphasize that imbalances in folate metabolism and related gene variants may impair female fecundity as well as compromise implantation and the chance of a live birth.
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Affiliation(s)
- Margit Laanpere
- Department of Biotechnology, Institute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia
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Homocysteine in small-for-gestational age and appropriate-for-gestational age preterm neonates from mothers receiving folic acid supplementation. Clin Chem Lab Med 2010; 48:1157-61. [DOI: 10.1515/cclm.2010.235] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Choi SW, Gu BH, Ramakrishna S, Park JM, Baek KH. Association between a single nucleotide polymorphism in MTHFR gene and polycystic ovary syndrome. Eur J Obstet Gynecol Reprod Biol 2009; 145:85-8. [PMID: 19427093 DOI: 10.1016/j.ejogrb.2009.04.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2008] [Revised: 12/24/2008] [Accepted: 04/12/2009] [Indexed: 11/15/2022]
Abstract
OBJECTIVE The aim of the present study was to investigate whether there is an association between the C677T polymorphism in MTHFR and PCOS in a Korean population. STUDY DESIGN The prevalence of MTHFR gene was compared between women with PCOS (n=227) and normal patients (n=115) using restriction fragment length polymorphism (RFLP) analysis. The HapAnalyzer was used to analyze the genotype of MTHFR polymorphism in PCOS and control subjects. We considered a p-value less than 0.05 as statistically significant. RESULTS The frequency of C/C, C/T, and T/T genotype showed similar proportion between PCOS and control subjects. In addition, the frequencies of co-dominant (p-value=0.8334, odds ratio (OR)=1.04), dominant (p-value=0.8749, OR=0.96) and recessive alleles (p-value=0.5574, OR=1.22) did not show any association between PCOS and control subjects. CONCLUSION Our data demonstrate that the C677T polymorphism of MTHFR gene is not associated with PCOS in a Korean population, suggesting that the C677T polymorphism in MTHFR may have different influences in various ethnic groups and diseases.
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Naghibalhossaini F, Mokarram P, Khalili I. Easy detection of 5,10-methylenetetrahydrofolate reductase 1298A/C genotype by mutagenically separated PCR assay. Clin Chem Lab Med 2008; 46:987-9. [PMID: 18605945 DOI: 10.1515/cclm.2008.184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND 5,10-Methylenetetrahydrofolate reductase (MTHFR) plays a central role in folate metabolism. Previous studies have suggested an association between the MTHFR 1298A/C polymorphism and several diseases, such as cardiovascular and psychiatric diseases, neural tube defects, diabetes, and cancer. Currently, either PCR-restriction fragment length polymorphism (RFLP) technique or real-time PCR using Taqman assay are used to determine the MTHFR 1298 genotype. METHODS We developed a simple and efficient approach that employs mutagenically separated PCR to genotype MTHFR 1298A/C polymorphism. Two forward mutagenic allele-specific primers of different lengths for MTHFR 1298A/C were paired with the same reverse primer in a one-tube assay to genotype 20 genomic DNA samples. RESULTS Electrophoresis on 2.5% agarose gel showed two allele-specific fragments, a 113-bp A allele-specific and a 93-bp C allele-specific PCR product. The results were confirmed by the conventional PCR-RFLP method. CONCLUSIONS We conclude that mutagenically separated PCR could be used as an alternative simple, reliable, and cost-effective method for the genotyping of MTHFR 1298A/C polymorphism.
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Fang M, Xu K, Zhang W. Mechanisms of reversible apoptosis in ovarian follicles: recovery of ovarian reserve after drug use. Reprod Biomed Online 2008; 17:292. [PMID: 18682006 DOI: 10.1016/s1472-6483(10)60208-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Simoni M, Tempfer CB, Destenaves B, Fauser BCJM. Functional genetic polymorphisms and female reproductive disorders: Part I: Polycystic ovary syndrome and ovarian response. Hum Reprod Update 2008; 14:459-84. [PMID: 18603647 PMCID: PMC2515090 DOI: 10.1093/humupd/dmn024] [Citation(s) in RCA: 106] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND The identification of polymorphisms associated with a disease can help to elucidate its pathogenesis, and this knowledge can be used to improve prognosis for women with a particular disorder, such as polycystic ovary syndrome (PCOS). Since an altered response to ovarian stimulation is also a characteristic of the disease, further knowledge about its aetiology could help in defining the parameters that determine the response of an individual to ovarian stimulation. METHODS PubMed and EMBASE databases were systematically searched for gene association studies published until the end of August 2007, using search criteria relevant to PCOS and ovarian response to stimulation. Data from additional papers identified through hand searches were also included; 139 publications were reviewed. RESULTS Several genes involved in ovarian function and metabolism are associated with increased susceptibility to PCOS, but none is strong enough to correlate alone with susceptibility to the disease, or response to therapy. A single-nucleotide polymorphism in exon 10 of the FSH receptor (FSHR) gene, FSHR p.N680S, was consistently identified as having a significant association with ovarian response to FSH. CONCLUSIONS No consistent association between gene polymorphism and PCOS could be identified. The FSHR gene may play a significant role in the success of ovarian stimulation, and can be used as a marker to predict differences in FSHR function and ovarian response to FSH. Genotyping the FSHR p.N680S polymorphism may provide a means of identifying a population of poor responders before in vitro fertilization procedures are initiated.
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Affiliation(s)
- M Simoni
- Department of Medicine, Endocrinology, Metabolism and Geriatrics, University of Modena and Reggio Emilia, I-41100 Modena, Italy.
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