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Zeng S, Wu Y, Zhou M, Bai H, Liu X, Fan P. Association between genetic polymorphisms of leptin receptor and preeclampsia in Chinese women. J Matern Fetal Neonatal Med 2023; 36:2207708. [PMID: 37150847 DOI: 10.1080/14767058.2023.2207708] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
OBJECTIVE Leptin signaling plays an important role in regulating metabolism and reproduction. In the present study, we investigated the relationship between polymorphisms of leptin receptor (LEPR) gene A223G and A668G and preeclampsia (PE) and evaluated influences of genotypes on clinical, metabolic, and oxidative stress indices in Chinese women. METHODS This is a case-control study including 322 patients with PE and 1295 healthy pregnant women. The two polymorphisms were genotyped by polymerase chain reaction-restriction fragments length polymorphism method. Clinical and biochemical parameters were analyzed. RESULTS The frequencies of the AA + AG genotypes (28.6% vs. 36.1%) and A allele (14.9% vs. 19.8%) of LEPR A223G polymorphism, and those of the AA + AG genotypes (17.7% vs. 24.6%) and A allele (9.0% vs. 12.9%) of LEPR A668G polymorphism were significantly lower in the PE group than those in the control group. The 223A and 668A alleles were protective factors against PE in the regression model, which included age and delivery body mass index as covariates (OR = 0.684, 95% CI: 0.506-0.926, p = .014; OR = 0.650, 95% CI: 0.456-0.927, p = .017, respectively). When the 668GG/223GG combined genotype served as the reference category, the 668A/223A combined allele had further enhanced the protective effect on PE (OR = 0.558, 95% CI: 0.374-0.833, p = .004). Patients possessing the LEPR 223A allele had higher total antioxidant capacity and lower oxidative stress index (p < .05), while those with the LEPR 668A allele had higher high-density lipoprotein cholesterol levels (p = .045) compared with those carrying the corresponding GG genotype. CONCLUSIONS The 223A and 668A alleles of LEPR polymorphisms are genetic protective factors for PE in Chinese women. The two alleles may exert a beneficial effect on oxidative stress and lipid metabolism in patients.
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Affiliation(s)
- Shuai Zeng
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Yujie Wu
- Laboratory of Genetic Disease and Perinatal Medicine, Laboratory of the Key Perinatal Disease, Key Laboratory of Birth Defects and Related Disease of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Mi Zhou
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Huai Bai
- Laboratory of Genetic Disease and Perinatal Medicine, Laboratory of the Key Perinatal Disease, Key Laboratory of Birth Defects and Related Disease of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Xinghui Liu
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Ping Fan
- Laboratory of Genetic Disease and Perinatal Medicine, Laboratory of the Key Perinatal Disease, Key Laboratory of Birth Defects and Related Disease of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
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Wang NN, Tang M, Zhang HY, Yang QZ, Yang GL. Association between leptin receptor polymorphisms and polycystic ovary syndrome risk: a meta-analysis based on 11 studies. Gynecol Endocrinol 2023; 39:2279565. [PMID: 37935245 DOI: 10.1080/09513590.2023.2279565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 10/31/2023] [Indexed: 11/09/2023] Open
Abstract
OBJECTIVE Published evidence indicated that the leptin receptor (LEPR) gene polymorphisms are associated with polycystic ovary syndrome (PCOS) risk. However, studies on the association between the polymorphisms of LEPR gene are inconsistent or even controversial. MATERIAL AND METHODS We conducted this meta-analysis to explore the more precise relationship between LEPR polymorphisms and PCOS risk. Relevant articles were searched with five online databases up to March 1 2023. Odds ratios (OR) with 95% confidence intervals (CI) were selected to examine the statistical strength of each genetic model. Moreover, RNA secondary structure and variant effects of these loci were examined with in silico analysis. RESULTS Overall, 11 publications were analyzed, and the pooled results did not present any significant association between rs1137101 A/G polymorphism and PCOS risk in general population and some subgroup analysis. But the significant association were observed in Asian population (AG vs. AA: OR = 0.51, 95%CI = 0.32-0.81, p = .01, I2=0%; AG + GG vs. AA: OR = 0.41, 95%CI = 0.26-0.65, p < .01, I2=25.9%). Moreover, similar positive associations were also observed in rs1805096 polymorphism with PCOS risk. CONCLUSION In summary, our meta-analysis suggested that the LEPR gene polymorphisms might be associated with PCOS susceptibility. Owing to the limited studies and small sample size in our meta-analysis, more well-designed studies from different races were needed to be conducted to verify the current results.
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Affiliation(s)
- Na-Na Wang
- Department of Clinical Nutrition, Taihe Hospital, Hubei University of Medicine, Shiyan, P. R. China
| | - Min Tang
- Department of Clinical Nutrition, Taihe Hospital, Hubei University of Medicine, Shiyan, P. R. China
| | - Han-Yu Zhang
- Department of Clinical Nutrition, Taihe Hospital, Hubei University of Medicine, Shiyan, P. R. China
| | - Qiao-Zhen Yang
- Department of Clinical Nutrition, Taihe Hospital, Hubei University of Medicine, Shiyan, P. R. China
| | - Gong-Li Yang
- Department of Gastroenterology, Shenzhen University General Hospital, Shenzhen University, Shenzhen, P. R. China
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The Complex Roles of Adipokines in Polycystic Ovary Syndrome and Endometriosis. Biomedicines 2022; 10:biomedicines10102503. [PMID: 36289764 PMCID: PMC9598769 DOI: 10.3390/biomedicines10102503] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/26/2022] [Accepted: 09/27/2022] [Indexed: 11/30/2022] Open
Abstract
Polycystic ovary syndrome (PCOS) and endometriosis are frequent diseases of the female reproductive tract causing high morbidity as they can significantly affect fertility and quality of life. Adipokines are pleiotropic signaling molecules secreted by white or brown adipose tissues with a central role in energy metabolism. More recently, their involvement in PCOS and endometriosis has been demonstrated. In this review article, we provide an update on the role of adipokines in both diseases and summarize previous findings. We also address the results of multi-omics approaches in adipokine research to examine the role of single nucleotide polymorphisms (SNPs) in genes coding for adipokines and their receptors, the secretome of adipocytes and to identify epigenetic alterations of adipokine genes that might be conferred from mother to child. Finally, we address novel data on the role of brown adipose tissue (BAT), which seems to have notable effects on PCOS. For this review, original research articles on adipokine actions in PCOS and endometriosis are considered, which are listed in the PubMed database.
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Mahmoud R, Kimonis V, Butler MG. Genetics of Obesity in Humans: A Clinical Review. Int J Mol Sci 2022; 23:11005. [PMID: 36232301 PMCID: PMC9569701 DOI: 10.3390/ijms231911005] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/09/2022] [Accepted: 09/10/2022] [Indexed: 11/23/2022] Open
Abstract
Obesity is a complex multifactorial disorder with genetic and environmental factors. There is an increase in the worldwide prevalence of obesity in both developed and developing countries. The development of genome-wide association studies (GWAS) and next-generation sequencing (NGS) has increased the discovery of genetic associations and awareness of monogenic and polygenic causes of obesity. The genetics of obesity could be classified into syndromic and non-syndromic obesity. Prader-Willi, fragile X, Bardet-Biedl, Cohen, and Albright Hereditary Osteodystrophy (AHO) syndromes are examples of syndromic obesity, which are associated with developmental delay and early onset obesity. Non-syndromic obesity could be monogenic, polygenic, or chromosomal in origin. Monogenic obesity is caused by variants of single genes while polygenic obesity includes several genes with the involvement of members of gene families. New advances in genetic testing have led to the identification of obesity-related genes. Leptin (LEP), the leptin receptor (LEPR), proopiomelanocortin (POMC), prohormone convertase 1 (PCSK1), the melanocortin 4 receptor (MC4R), single-minded homolog 1 (SIM1), brain-derived neurotrophic factor (BDNF), and the neurotrophic tyrosine kinase receptor type 2 gene (NTRK2) have been reported as causative genes for obesity. NGS is now in use and emerging as a useful tool to search for candidate genes for obesity in clinical settings.
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Affiliation(s)
- Ranim Mahmoud
- Department of Pediatrics, University of California, Irvine, CA 92697, USA
- Department of Pediatrics, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Virginia Kimonis
- Department of Pediatrics, University of California, Irvine, CA 92697, USA
- Departments of Neurology and Pathology, University of California, Irvine, CA 92697, USA
- Children’s Hospital of Orange County, Orange, CA 92868, USA
| | - Merlin G. Butler
- Departments of Psychiatry & Behavioral Sciences and Pediatrics, University of Kansas Medical Center, Kansas City, KS 66160, USA
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Naseri R, Barzingarosi E, Sohrabi M, Alimoradi Y, Cheraghian Fard M, Jalili C. The Effect of Leptin Receptor Gene Polymorphisms (R223Q and P1019P) in Susceptibility to Polycystic Ovarian Syndrome in Kurdish Women. INTERNATIONAL JOURNAL OF FERTILITY & STERILITY 2021; 15:123-127. [PMID: 33687165 PMCID: PMC8052805 DOI: 10.22074/ijfs.2021.6197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 06/22/2020] [Indexed: 12/23/2022]
Abstract
Background Polycystic ovary syndrome (PCOS) is the known endocrinopathy disorder in the reproductive phase of women's life. More than half of the women with PCOS suffer from obesity which impacts the ovarian functions by leptin levels. Here the R223Q and P1019P polymorphisms of leptin receptor (LEPR) gene were examined in PCOS patients of Kurdish women from west of Iran. Materials and Methods In this case-control study, one hundred women with PCOS and 100 healthy women bearing similar age range were selected based on Rotterdam diagnostic criteria. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method was used to genotype polymorphisms LEPR (R223Q and P1019P), by respectively the BsaWI and NcoI restriction enzymes. Pearson's chi-square (χ2) test was used to analyze the variation in genetic distributions and unconditional logistic regression model was used to calculate the odds ratio (OR; 95% CI). Results Genotype frequencies of the R223Q and P1019P polymorphisms showed significant difference between the patients with PCOS compared to the controls. G allele (R223Q) reduced the risk of PCOS about 0.49-fold (P<0.001). While, T allele (P1019P) increased the risk of PCOS 2.69-fold (P<0.001). Conclusion It can be concluded that the R223Q and P1019P polymorphisms showed a significant association with PCOS susceptibility risk. It seems that G allele (R223Q) with reducing OR had a protective effect on this syndrome, while T allele (P1019P) with increasing OR was a risk factor for PCOS.
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Affiliation(s)
- Rozita Naseri
- Internal Medicine Department, Imam Reza Hospital, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Elahe Barzingarosi
- Internal Medicine Department, Imam Reza Hospital, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Maryam Sohrabi
- Fertility and Infertility Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Yosra Alimoradi
- Internal Medicine Department, Imam Reza Hospital, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mostafa Cheraghian Fard
- Department of Anatomical Sciences, Medical School, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Cyrus Jalili
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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Contrasting association of Leptin receptor polymorphisms and haplotypes with polycystic ovary syndrome in Bahraini and Tunisian women: a case-control study. Biosci Rep 2021; 41:227065. [PMID: 33245096 PMCID: PMC7789794 DOI: 10.1042/bsr20202726] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 11/25/2020] [Accepted: 11/26/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND The present study examined the contribution of ethnicity to the association of leptin receptor gene (LEPR) gene variants with polycystic ovary syndrome (PCOS) in Tunisian and Bahraini Arabic-speaking women. METHODS Subjects consisted of 320 women with PCOS, and 446 eumenorrhic women from Tunisia, and 242 women with PCOS and 238 controls from Bahrain. Genotyping of (exonic) rs1137100 and rs1137101 and (intronic) rs2025804 LEPR variants was done by allelic exclusion. RESULTS The minor allele frequencies (MAFs) of rs1137100 and rs1137101 were significantly different between PCOS cases and control women from Bahrain but not Tunisia, and LEPR rs1137101 was associated with increased PCOS susceptibility only in Bahraini subjects. Furthermore, rs1137100 was associated with decreased PCOS risk among Bahrainis under codominant and recessive models; rs1137100 was negatively associated with PCOS in Tunisians after controlling for testosterone. In addition, rs2025804 was associated with increased PCOS risk among Tunisian but not Bahraini women, after adjusting for key covariates. Negative correlation was seen between rs1137101 and triglycerides in Tunisians, while homeostasis model assessment of insulin resistance (HOMA-IR) and insulin correlated with rs2025804 and rs1137101 among Bahraini subjects, and rs1137101 correlated with estradiol and prolactin. Taking TAG haplotype as common, positive association of TAA and negative association of TGG haplotype with PCOS was seen among Bahraini women; no three-locus PCOS-associated haplotypes were found in Tunisians. CONCLUSIONS The present study is the first to demonstrate the contribution of ethnicity to the association of LEPR gene variants with PCOS, thereby highlighting the significance of controlling for ethnicity in gene association investigations.
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Liu RB, Liu Y, Lv LQ, Xiao W, Gong C, Yue JX. Effects of Metformin Treatment on Soluble Leptin Receptor Levels in Women with Polycystic Ovary Syndrome. Curr Med Sci 2019; 39:609-614. [PMID: 31346998 DOI: 10.1007/s11596-019-2081-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 06/12/2019] [Indexed: 12/18/2022]
Abstract
The effects of metformin treatment on soluble leptin receptor (sOB-R) levels in women with polycystic ovary syndrome (PCOS) were investigated. This prospective and open-label study was conducted by the Department of Obstetrics & Gynecology at Union Hospital, Tongji Medical College of Huazhong University of Science and Technology, China. Fifty-five women with PCOS and insulin resistance (IR) were treated with metformin for 6 months. According to body mass index (BMI), the patients were divided into two groups: lean PCOS group (BMI <23 kg/m2, n=34) and overweight or obese PCOS group (BMI ≥23 kg/m2, n=21). Before and after treatment, serum luteinizing hormone (LH), follicle stimulating hormone (FSH), testosterone (T), androstenedione (A), dehydroepiandrosterone sulfate (DHEAS), insulin and sOB-R levels were determined. Thirty-one BMI-matched ovulatory women served as controls. The results showed: (1) The Homeostatic Model Assessment of Insulin Resistance (HOMA-IR), androgen levels and hirsutism scores were higher, and sOB-R levels were lower in PCOS groups than in control group. A subgroup analysis of lean and overweight or obese PCOS patients revealed there was significant difference in sOB-R level between lean PCOS group and overweight or obese PCOS group. There were no significant differences in anthropometric parameters between lean PCOS patients and BMI-matched controls. However, sOB-R level was significantly lower in lean PCOS women than in controls. (2) There was no correlation between sOB-R level and BMI, waist and hip circumference, total testosterone, androstendione, DHEAS, LH or hirsutism scores in PCOS patients, but there was a significant negative correlation between sOB-R and HOMA-IR. (3) After treatment with metformin for 6 months, serum insulin levels decreased, and sOB-R levels increased significantly (P<0.01). It was suggested that considering low sOB-R levels supposedly compensate diminished leptin action, PCOS per se might cause leptin resistance. It is likely that reduction of hyperinsulinemia produced by metformin effectively improves the sOB-R levels in PCOS.
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Affiliation(s)
- Ru-Biao Liu
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.,Department of Obstetrics and Gynecology, the Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430014, China
| | - Yi Liu
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Li-Qun Lv
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Wei Xiao
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Cheng Gong
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jian-Xin Yue
- Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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Nosrati M, Asadollahpour Nanaei H, Amiri Ghanatsaman Z, Esmailizadeh A. Whole genome sequence analysis to detect signatures of positive selection for high fecundity in sheep. Reprod Domest Anim 2018; 54:358-364. [PMID: 30359467 DOI: 10.1111/rda.13368] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 10/15/2018] [Indexed: 12/19/2022]
Abstract
Ovulation rate and prolificacy are the most important reproductive traits that have major impact on the efficiency of lamb meat production. Here, we compared the whole genomes of the Romanov sheep, known as one of the high prolific breeds, and four other sheep breeds namely Assaf, Awassi, Cambridge and British du cher, to identify genetic mechanisms underlying prolificacy in sheep. Selection signature analysis revealed 637 and 477 protein-coding genes under positive selection from FST and nucleotide diversity (Pi) statistics, respectively. Further analysis showed that several candidate genes including LEPR, PDGFRL and KLF5 genes are involved in sheep prolificacy. The identified candidate genes in the selected regions are novel and provide new insights into the genetic mechanisms underlying prolificacy in sheep and can be useful in sheep breeding programmes to develop improved breeds for high reproductive efficiency.
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Affiliation(s)
- Maryam Nosrati
- Department of Agriculture, Payame Noor University, Tehran, Iran
| | - Hojjat Asadollahpour Nanaei
- Department of Animal Science, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran.,Young Researchers Society, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Zeinab Amiri Ghanatsaman
- Department of Animal Science, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran.,Young Researchers Society, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Ali Esmailizadeh
- Department of Animal Science, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran
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