scholarly journals Leptin as well as Free Leptin Receptor Is Associated with Polycystic Ovary Syndrome in Young Women

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Nasser M. Rizk ◽  
Elham Sharif
Keyword(s):  
Insulin Resistance ◽  
Leptin Receptor ◽  
Polycystic Ovary ◽  
Cross Sectional Study ◽  
Compensatory Mechanism ◽  
Ovary Syndrome ◽  
Cross Sectional ◽  
Soluble Leptin Receptor ◽  
Median Level ◽  
Male Sex

Background and Aim. Leptin has two forms in the circulation: free and bound forms. The soluble leptin receptor (sOB-R) circulates in the blood and can bind to leptin. The aim of this study is to assess the concentrations of the leptin and the sOB-R in PCOS and its relation to adiposity, insulin resistance, and androgens.Methods. A cross-sectional study included 78 female students aged 17–25 years. Fasting serum leptin and sOB-R concentrations were measured. The anthropometric variables and the hormonal profile such as insulin, female and male sex hormones, and prolactin were assessed.Results. In PCOS, leptin level (ng/ml) and free leptin index (FLI) increased significantly while sOB-R (ng/ml) significantly decreased compared to control subjects. In age-matched subjects, obese PCOS had increased leptin level in ng/ml (median level with interquartile levels) of 45.67 (41.98–48.04) and decreased sOB-R in ng/ml 11.47 (7.59–16.44) compared to lean PCOS 16.97 (10.60–45.55) for leptin and 16.62 (11.61–17.96) for sOB-R withpvalues 0.013 and 0.042, respectively. However, body mass index (BMI) is significantly correlated with leptin and s-OBR, while no significant correlations with parameters of insulin resistance were detected.Conclusion. PCOS is associated with hyperleptinemia and increased free leptin index. Decreased sOB-R could be a compensatory mechanism for the defective action of leptin.

scholarly journals Prevalence and Clinical Predictors of Insulin Resistance in Reproductive-Aged Thai Women with Polycystic Ovary Syndrome

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Thanyarat Wongwananuruk ◽  
Manee Rattanachaiyanont ◽  
Suchada Indhavivadhana ◽  
Pichai Leerasiri ◽  
Kitirat Techatraisak ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Polycystic Ovary Syndrome ◽  
Polycystic Ovary ◽  
Multiple Logistic Regression Analysis ◽  
Cross Sectional Study ◽  
Diabetic Mellitus ◽  
Clinical Predictors ◽  
Ovary Syndrome ◽  
Cross Sectional ◽  
Thai Women

Objectives. To determine the prevalence of insulin resistance (IR) and its predictors in reproductive-aged Thai women with polycystic ovary syndrome (PCOS).Methods. A cross-sectional study was conducted from May 2007 to January 2009. Participants were 250 Thai women with PCOS. Information regarding medical history and physical examination and results of 75 gram OGTT were recorded.Results. The overall prevalence of IR was 20.0%, comprising the prevalence of impaired fasting glucose, impaired glucose tolerance, and diabetic mellitus of 3.2%, 13.6%, and 5.6%, respectively. Multiple logistic regression analysis showed that the independent predictors for IR were age of ≥30 years old, waist circumference (WC) of ≥80 cm, presence of acanthosis nigricans (AN), and dyslipidemia with odds ratios (95% confidence interval) of 2.14 (1.01–4.52), 3.53 (1.28–9.75), 2.63 (1.17–5.88), and 3.07 (1.16–8.11), respectively.Conclusion. The overall prevalence of IR in reproductive-aged Thai women with PCOS is 20.0%. Age ≥30 years old, WC ≥80 cm, the presence of AN, and dyslipidemia are the significant clinical predictors.

scholarly journals Decreased soluble leptin receptor levels in women with polycystic ovary syndrome

2006 ◽  
Vol 154 (2) ◽  
pp. 287-294 ◽  
Author(s):  
Susanne Hahn ◽  
Uwe Haselhorst ◽  
Beate Quadbeck ◽  
Susanne Tan ◽  
Rainer Kimmig ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Polycystic Ovary Syndrome ◽  
Body Fat ◽  
Leptin Receptor ◽  
Polycystic Ovary ◽  
Biologically Active ◽  
Leptin Resistance ◽  
Ovary Syndrome ◽  
Soluble Leptin Receptor ◽  
Endocrine Parameters

Objective: Polycystic ovary syndrome (PCOS) is associated with insulin resistance and a high incidence of obesity. Leptin, the product of the ob gene, is involved in the regulation of energy balance and obesity and circulates in both free and bound forms. The soluble leptin receptor (sOB-R) is the most important leptin-binding protein, thus influencing the biologically active free leptin level. Design: We assessed the correlation of metabolic and endocrine parameters with leptin and sOB-R levels in 122 PCOS women (aged 27 ± 5.7 years) and 81 healthy controls (aged 25 ± 4.0 years). Methods: Leptin and sOB-R levels were measured using ELISA kits. In addition, anthropometric variables, body fat and endocrine parameters were evaluated and a glucose tolerance test performed to assess indices of insulin resistance and glucose metabolism. Results: In PCOS patients, no correlation was found between leptin or sOB-R and parameters of hyper-androgenism. However, as expected, body mass index (BMI), body fat, waist circumference and indices of insulin resistance were significantly correlated with leptin in PCOS subjects and controls. In a subgroup analysis of lean, overweight and obese PCOS patients, significant differences were found in leptin (29.7 ± 20.7 vs 45.4 ± 25.0 vs 67.7 ± 28.8 ng/ml, P < 0.0001) and sOB-R (8.0 ± 3.4 vs 6.4 ± 2.5 vs 5.7 ± 2.3 ng/ml, P < 0.05). Compared with BMI-matched controls, lean PCOS patients had lower sOB-R levels (8.0 ± 3.4 vs 12.7 ± 4.7 ng/ml, P < 0.0001) and higher free leptin indices (4.5 ± 3.9 vs 2.8 ± 2.2, P = 0.0285). Conclusion: Taking into account that low sOB-R levels supposedly compensate diminished leptin action, PCOS per se might cause leptin resistance.

scholarly journals Serum Fetuin-A levels were increased and associated with insulin resistance in  women with polycystic ovary syndrome

2019 ◽  
Author(s):  
Sha Liu ◽  
Wenjing Hu ◽  
Yirui He ◽  
Ling Li ◽  
Hua Liu ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Polycystic Ovary Syndrome ◽  
Polycystic Ovary ◽  
Multivariate Regression Analysis ◽  
Cross Sectional Study ◽  
Roc Curve Analysis ◽  
Ovary Syndrome ◽  
Cross Sectional ◽  
Fetuin A ◽  
Healthy Women

Abstract Background: Insulin resistance (IR) is a common characteristic in women with polycystic ovary syndrome (PCOS). It has been reported that circulating Fetuin-A levels were associated with IR and type 2 diabetes mellitus (T2DM). However, in PCOS women, previous reports on changes in circulating Fetuin-A concentrations were inconsistent. Methods: A cross-sectional study was conducted, including 122 PCOS women and 85 healthy women. Circulating Fetuin-A levels were determined using an ELISA kit. Results: We found that circulating Fetuin-A concentration ranged from 196.6 to 418.2 µg/L for most normal women (95 %). Women with PCOS have higher circulating Fetuin-A levels than healthy women (437.9 ± 119.2 vs. 313.8 ± 60.4 μg/L; p <0.01). Serum Fetuin-A concentrations correlated positively with WHR, LDL-C, FIns, HOMA-IR, TEST and DHEA-S. Multivariate regression analysis showed that WHR, HOMA-IR and TEST were independent influencing factors of serum Fetuin-A. Binary logistic regression reaveled that serum Fetuin-A was associated with the .occurrence of PCOS. In addition, our ROC curve analysis found that the cutoff values for Fetuin-A to predict PCOS and IR were 366.3 and 412.6 µg/L. Conclusion: Blood Fetuin-A may be a useful biomarker for screening women with PCOS and IR.

scholarly journals THE EFFECT OF METFORMIN ON BODY WEIGHT IN POLYCYSTIC OVARY SYNDROME PATIENTS

2014 ◽  
Vol 2 (3) ◽  
pp. 33-39
Author(s):  
Yasser El-Shabrawy ◽  
Alaa Alhaboby ◽  
Nageeb Abdulgaleel Hassan ◽  
Sameer Issa Bloukh ◽  
Moayad Jamal Shahwan
Keyword(s):  
Insulin Resistance ◽  
Body Weight ◽  
Polycystic Ovary Syndrome ◽  
Polycystic Ovary ◽  
Cross Sectional Study ◽  
The Body ◽  
Online Questionnaire ◽  
Ovary Syndrome ◽  
Cross Sectional ◽  
Positive Effect

Polycystic Ovary Syndrome (PCO) is an endocrine disease that is characterized by a set of symptoms including irregular menstruation, subfertility, skin changes, hirsutism and weight gain. The pathogenesis of PCO is mostly related to increase androgens and insulin resistance. Treatment is mostly symptomatic hence metformin is being used due to its effect in decreasing gluconeogenesis and by increasing peripheral utilization of glucose, in addition to its lowering effects on androgen. Thus, Metformin role in PCO treatment ranges between managing insulin resistance, promoting ovulation and treating hirsutism to some extent. Some studies showed that Metformin is effective in lowering body weight in PCO patients, yet it is not being indicated officially for this purpose. Background: Metformin is expected to have an effect of weight reduction in PCO patients This is the scope of this research which intends to explore this action. Method: The Study design is cross sectional study using online questionnaire. Open and closed ended questions were included.  Results: Based on the results the majority shows decrease in the weight, while only one reported increase in their weight and only one had the same weight during and after treatment with metformin. Conclusions:  Metformin generally showed positive effect regarding reducing the body weight of the females diagnosed with polycystic ovarian syndrome when used alone.

scholarly journals Indexes of Insulin Resistance in Hyperinsulinemic Polycystic Ovary Syndrome in a Macedonian Cohort of Women of Reproductive Age: A Cross-Sectional Study

2016 ◽  
Vol 4 (4) ◽  
pp. 607-612
Author(s):  
Sasha Jovanovska-Mishevska ◽  
Aleksandra Atanasova-Boshku ◽  
Iskra Bitoska ◽  
Irfan Ahmeti ◽  
Biljana Todorova ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Polycystic Ovary Syndrome ◽  
Polycystic Ovary ◽  
Cross Sectional Study ◽  
Reproductive Age ◽  
Control Group ◽  
Oral Glucose ◽  
Sectional Study ◽  
Ovary Syndrome ◽  
Cross Sectional

BACKGROUND: Polycystic ovary syndrome (PCOS) is complex hormonal, metabolic and reproductive disorder and is a leading cause of female infertility. Hyperinsulinemia secondary to insulin resistance plays important role in the pathogenesis of PCOS.AIM: To assess the sensitivity of different indices of insulin resistance and their relevance in a clinical setting.MATERIAL AND METHODS: A cross-sectional study of 43 patients with PCOS and 29 noromo ovulatory women as a control group was conducted. Standard clinical, anthropometrical and hormonal testing for hyperandrogenism was conducted, as well as oral glucose tolerance test with determination of basal and stimulated glucose and insulin values.RESULTS: The dynamic I/G index showed the highest sensitivity and specificity, but the static indexes HOMA-IR and QUICKI, although based on only basal glycemic and insulinemic values, showed good sensitivity, 90.38% and 94.01% respectively. HOMA-IR showed significant positive correlation with the stimulated insulin values.CONCLUSIONS: Our results support the use of static indexes in the evaluation of insulin resistance in women with PCOS in a clinical setting, offering a simple assessment of insulin resistance in PCOS, which holds great prognostic and treatment implications.

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