scholarly journals Bidirectional Mendelian randomization to explore the causal relationships between body mass index and polycystic ovary syndrome

2018 ◽  
Vol 34 (1) ◽  
pp. 127-136 ◽  
Author(s):  
M A Brower ◽  
Y Hai ◽  
M R Jones ◽  
X Guo ◽  
Y -D I Chen ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Polycystic Ovary Syndrome ◽  
Body Mass ◽  
Mendelian Randomization ◽  
Polycystic Ovary ◽  
Causal Relationships ◽  
Ovary Syndrome

Body Mass Index and Polycystic Ovary Syndrome: A 2-Sample Bidirectional Mendelian Randomization Study

2020 ◽  
Vol 105 (6) ◽  
pp. 1778-1784 ◽  
Author(s):  
Yalin Zhao ◽  
Yuping Xu ◽  
Xiaomeng Wang ◽  
Lin Xu ◽  
Jianhua Chen ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Polycystic Ovary Syndrome ◽  
Body Mass ◽  
Mendelian Randomization ◽  
Polycystic Ovary ◽  
East Asian ◽  
Mr Studies ◽  
Genome Wide Association Studies ◽  
Ovary Syndrome ◽  
Asian Populations

Abstract Background Observational studies have shown a link between elevated body mass index (BMI) and the risk of polycystic ovary syndrome (PCOS). While Mendelian randomization (MR) studies in Europeans have suggested a causal role of increased BMI in PCOS, whether the same role is suggested in Asians has yet to be investigated. We used MR studies to infer causal effects using genetic data from East Asian populations. Methods and Findings We performed a 2-sample bidirectional MR analysis using summary statistics from genome-wide association studies (GWAS) of BMI (with up to 173 430 individuals) and PCOS (4386 cases and 8017 controls) in East Asian populations. Seventy-eight single nucleotide polymorphisms (SNPs) correlated with BMI were selected as genetic instrumental variables to estimate the causal effect of BMI on PCOS using the inverse-variance weighted (IVW) method. To test the reliability of the results, further sensitivity analyses included MR–Egger regression, weighted median estimates, and leave-one-out analysis. The IVW analysis indicated a significant association between high BMI and the risk of PCOS (odds ratio per standard deviation higher BMI, 2.208; 95% confidence interval 1.537 to 3.168, P = 1.77 × 10–5). In contrast, the genetic risk of PCOS had no significant effect on BMI. Conclusions The results of our bidirectional MR study showed that an increase in BMI causes PCOS, while PCOS does not cause an increased BMI. This study provides further genetic support for a link between BMI and PCOS. Further research is needed to interpret the potential mechanisms of this association.

Metformin treatment with or without life style changes in patients with polycystic ovary syndrome

2011 ◽  
Vol 152 (16) ◽  
pp. 628-632 ◽  
Author(s):  
Gyula Petrányi ◽  
Mária Zaoura-Petrányi
Keyword(s):  
Body Mass Index ◽  
Polycystic Ovary Syndrome ◽  
Treatment Period ◽  
Body Mass ◽  
Life Style ◽  
Polycystic Ovary ◽  
Glycaemic Index ◽  
Ovary Syndrome ◽  
Waist To Hip Ratio ◽  
Life Style Changes

Treatment with metformin three times 500 mg daily had been advised since 2002, to patients suffering from the polycystic ovary syndrome diagnosed by the Rotterdam criteria and who did not want to take contraceptive pills. More recently, life style changes have also been introduced to treatment recommendation: increased physical activity, low glycaemic index diet; also with calorie restriction for the obese patients. Aim: To assess the efficacy of the two treatment forms on clinical symptoms of the disease. Method: The metformin only historical control group (metformin monotherapy) consisted of 27 patients between the ages from 18 to 39 years (mean 29 years); to which was the age-matched metformin and life style changes group (triple basal therapy) of 29 patients compared. The following parameters were registered at the beginning and the end of a six-month treatment period: global acne score, Ferriman-Gallwey hirsutism score, body mass index, waist-to-hip circumference ratio, and menstrual cycles. Results: By the end of the treatment period, both acne and hirsutism scores improved significantly in both treatment groups (P<0.001); the improvements did not differ between them: acne 8.6±5.7 vs. 9.2±5.9 (P = 0.70); hirsutism 2.5±2.0 vs. 2.6±1.6 (P = 0.83). Body mass index and waist-to-hip ratio remained practically unchanged in the metformin only group: 0.26±1.0 kg/m2 (P = 0.21) and 0.001±0.02 (P = 0.71). Body mass index decreased in the triple therapy group by 0.91±1.1 kg/m2 (P<0.001); and waist-to-hip ratio by 0.019±0.03 (P<0.001). The decrease of the body mass index was more remarkable in overweight patients: 1.10±1.26 kg/m2 (P = 0.002) vs. 0.64±0.88 kg/m2 (P = 0.03) in lean patients. Recommendation on life style changes with metformin did not show further improvement of hyperandrogenic symptoms in comparison to metformin alone but the combined therapy diminished body size indexes. Conclusion: Authors recommend the triple basal treatment consisting of metformin, physical exercise and low glycaemic index diet to their patients with polycystic ovary syndrome for assessment of its long-term efficacy. Orv. Hetil., 2011, 152, 628–632.

scholarly journals Effect of Metformin Therapy on Clinical and Hormonal Indices of Patients with Polycystic Ovary Syndrome

2021 ◽  
Vol 15 (5) ◽  
pp. 1522-1525
Author(s):  
S. Inayat ◽  
H. F. Khattak ◽  
M. G. Muhammad ◽  
K. Robeen ◽  
A. Inayat ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Body Mass Index ◽  
Body Weight ◽  
Polycystic Ovary Syndrome ◽  
Blood Sugar ◽  
Body Mass ◽  
Polycystic Ovary ◽  
Fasting Blood Sugar ◽  
Ovary Syndrome ◽  
Group Ii

Objective: The main objective of this study is to determine the efficacy of metformin therapy on clinical and hormonal indices of patients with polycystic ovary syndrome. Study Design: Randomized control trial Place and Duration: Study was conducted at Obstetrics & Gynaecology department of Northwest General Hospital and Research Center, Peshawar and Mian Rashid Hussain Shaheed Memorial Hospital, Pabbi for duration of nine months from March 2020 to November 2020. Methods: Total 100 patients of polycystic ovary syndrome were presented in this study. Patients were aged between 18 to 45years. Patients detailed demographics including age, body mass index and socio-economicstatus were recorded after taking informed written consent. Patients were divided into 2-groups, group I had 50 patients and received metformin (500 mg) three times a day and group II had 50 patients and received pioglitazone (30 mg) three times a day for 3months.Clinical (body weight, blood pressure (BP), and body mass index) and indices fasting blood sugar (FBS), serum triglyceride (TG), cholesterol, low-density lipoprotein, high-density lipoprotein, insulin, testosterone, and dehydroepiandrosterone (DHEA) were measured before and after therapy. Complete data was analyzed by SPSS 22.0 version. Results: Mean age of the patients in group I was 29.18 ± 2.25 years with mean BMI 26.14 ± 8.86 kg/m2 and in group II mean age was 29.8 ± 2.52 years with mean BMI 27.64 ± 7.68 kg/m2.Significantly decrease in blood pressure (systolic 105.41±8.57, diastolic 67.19±8.9), hair loss 20 (40%),oligomenorrhea 23 (46%), body weight 74.45±9.72, waist circumference and dehydroepiandrosterone (DHEA) 2.35±0.67 and as compared to group II. Only triglycerides gave results of reduction in group II 115.39±64.11. Among both groups serum insulin, acne, menstrual disturbance and fasting blood sugar were controlled after treatment. Conclusion: We concluded in this study that use of metformin in patients with polycystic ovary syndrome resulted in to decrease clinical body weight, blood pressure (BP), body mass index and hormonal indices with reduction of serum insulin, acne, menstrual disturbance and fasting blood sugar but pioglitazone was an alternative effective and reliable method in PCOS patients. Keywords: Polycystic ovary syndrome, Insulin resistance, Metformin, Pioglitazone

scholarly journals Insulin resistance in relation to clinical, endocrine and metabolic profile of infertile women with polycystic ovary syndrome

2021 ◽  
Vol 14 (1) ◽  
pp. 1-6
Author(s):  
Shakeela Ishrat ◽  
Marufa Hossain ◽  
Subrata Kumar Biswas
Keyword(s):  
Insulin Resistance ◽  
Metabolic Syndrome ◽  
Body Mass Index ◽  
Waist Circumference ◽  
Polycystic Ovary Syndrome ◽  
Body Mass ◽  
Polycystic Ovary ◽  
Ovary Syndrome ◽  
Infertile Women ◽  
Significant Difference

The objective of this study is to explore how hyperinsulinemia and insulin resistance relate to the clinical, endocrine and metabolic factors in the infertile women with polycystic ovary syndrome. This study was conducted on 121 consecutive infertile women with polycystic ovary syndrome attending the Infertility unit from January 2017 to December 2017. They were divided into two groups: insulin resistant and insulin sensitive. There was significant difference in body mass index and waist circumference between the two groups. Serum lipids were not associated with insulin resistance. Hyperinsulinemia was significantly associated with metabolic syndrome. Reducing body mass index and waist circumference may improve insulin resistance in infertile women with polycystic ovary syndrome. Screening the infertile women with polycystic ovary syndrome for hyperinsulinemia and insulin resistance and subsequent counseling is recommended to address the long-term risks of metabolic syndrome.

scholarly journals Association of PPARG Pro12Ala polymorphism with insulin sensitivity and body mass index in patients with polycystic ovary syndrome

2013 ◽  
Vol 2 (2) ◽  
pp. 199-206 ◽  
Author(s):  
DINKA PAVICIC BALDANI ◽  
LANA SKRGATIC ◽  
JASMINA Z. CERNE ◽  
POLONCA FERK ◽  
VELIMIR SIMUNIC ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Insulin Sensitivity ◽  
Polycystic Ovary Syndrome ◽  
Body Mass ◽  
Polycystic Ovary ◽  
Pro12ala Polymorphism ◽  
Ovary Syndrome
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