Vitamin D metabolism in polycystic ovary syndrome (PCOS)

2022 ◽  
pp. 287-296
Author(s):  
Flavia Di Bari ◽  
Salvatore Benvenga
Keyword(s):  
Vitamin D ◽  
Polycystic Ovary Syndrome ◽  
Polycystic Ovary ◽  
Ovary Syndrome ◽  
Vitamin D Metabolism

scholarly journals Vitamin D-associated polymorphisms are related to insulin resistance and vitamin D deficiency in polycystic ovary syndrome

2011 ◽  
Vol 164 (5) ◽  
pp. 741-749 ◽  
Author(s):  
Elisabeth Wehr ◽  
Olivia Trummer ◽  
Albrecht Giuliani ◽  
Hans-Jürgen Gruber ◽  
Thomas R Pieber ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Vitamin D ◽  
Insulin Sensitivity ◽  
Polycystic Ovary Syndrome ◽  
Polycystic Ovary ◽  
Oral Glucose ◽  
Model Assessment ◽  
Ovary Syndrome ◽  
Vitamin D Metabolism ◽  
Endocrine Parameters

IntroductionWomen with polycystic ovary syndrome (PCOS) frequently suffer from metabolic disturbances including insulin resistance (IR), which might be related to vitamin D metabolism. We aimed to investigate the association of polymorphisms in the vitamin D receptor (VDR) gene as well as vitamin D level-associated genes with metabolic and endocrine parameters in PCOS women. Moreover, we examined whether there are associations with PCOS susceptibility.MethodsMetabolic, endocrine, and anthropometric measurements and oral glucose tolerance tests were performed in 545 PCOS and 145 control women. Genotyping of VDR (Cdx2, Bsm-I, Fok-I, Apa-I, and Taq-I), GC, DHCR7, and CYP2R1 polymorphisms was performed.Results25-Hydroxyvitamin D (25(OH)D) levels showed significant negative correlation with IR and positive correlation with insulin sensitivity (P<0.05 for all) in PCOS women. In PCOS women, the VDR Cdx2 ‘AA’ genotype was associated with lower fasting insulin (P=0.039) and homeostatic model assessment-IR (P=0.041) and higher quantitative insulin-sensitivity check index (P=0.012) and MATSUDA index (P=0.003). The VDR Apa-I ‘AA’ genotype was associated with lower testosterone (P=0.028) levels. In PCOS women, 170 women (31.2%) presented with 25(OH)D levels <20 ng/ml. PCOS women carrying the GC ‘GG’ genotype and the DHCR7 ‘GG’ genotype had a significantly higher risk for 25(OH)D levels <20 ng/ml (OR 2.53 (1.27–5.06), P=0.009, and OR 2.66 (1.08–6.55), P=0.033 respectively) compared with PCOS women carrying the GC ‘TT’ genotype and DHCR ‘TT’ genotype in multivariate analyses. We observed no association of genetic variations and PCOS susceptibility.ConclusionVDR and vitamin D level-related variants are associated with metabolic and endocrine parameters including 25(OH)D levels in PCOS women.

The role of vitamin D in metabolic and reproductive disturbances of polycystic ovary syndrome: A narrative mini-review

2020 ◽  
pp. 1-8
Author(s):  
Daniela Menichini ◽  
Gianpiero Forte ◽  
Beatrice Orrù ◽  
Giuseppe Gullo ◽  
Vittorio Unfer ◽  
...  
Keyword(s):  
Vitamin D ◽  
Polycystic Ovary Syndrome ◽  
Embryo Quality ◽  
Polycystic Ovary ◽  
Vitamin D Supplementation ◽  
Endometrial Receptivity ◽  
Metabolic Disturbances ◽  
Ovary Syndrome ◽  
Beneficial Role

Abstract. Vitamin D is a secosteroid hormone that plays a pivotal role in several metabolic and reproductive pathways in humans. Increasing evidence supports the role of vitamin D deficiency in metabolic disturbances and infertility in women with polycystic ovary syndrome (PCOS). Indeed, supplementation with vitamin D seems to have a beneficial role on insulin resistance and endometrial receptivity. On the other hand, exceedingly high levels of vitamin D appear to play a detrimental role on oocytes development and embryo quality. In the current review, we summarize the available evidence about the topic, aiming to suggest the best supplementation strategy in women with PCOS or, more generally, in those with metabolic disturbances and infertility. Based on the retrieved data, vitamin D seems to have a beneficial role on IR, insulin sensitivity and endometrial receptivity, but high levels and incorrect timing of administration seem to have a detrimental role on oocytes development and embryo quality. Therefore, we encourage a low dose supplementation (400–800 IU/day) particularly in vitamin D deficient women that present metabolic disturbances like PCOS. As far as the reproductive health, we advise vitamin D supplementation in selected populations, only during specific moments of the ovarian cycle, to support the luteal phase. However, ambiguities about dosage and timing of the supplementation still emerge from the clinical studies published to date and further studies are required.

Association between Vitamin D and Metabolic Indexes in Patients with Polycystic Ovary Syndrome

Diabetes ◽  
2018 ◽  
Vol 67 (Supplement 1) ◽  
pp. 2453-PUB
Author(s):  
SHEN SHANMEI ◽  
LIU JIAYI ◽  
LI YIKUN ◽  
QIAO CHENGCHENG ◽  
YANG JIAMIAO ◽  
...  
Keyword(s):  
Vitamin D ◽  
Polycystic Ovary Syndrome ◽  
Polycystic Ovary ◽  
Ovary Syndrome

scholarly journals The role of vitamin D in metabolic disturbances in polycystic ovary syndrome: a systematic review

2013 ◽  
Vol 169 (6) ◽  
pp. 853-865 ◽  
Author(s):  
Y H M Krul-Poel ◽  
C Snackey ◽  
Y Louwers ◽  
P Lips ◽  
C B Lambalk ◽  
...  
Keyword(s):  
Systematic Review ◽  
Vitamin D ◽  
Clinical Trials ◽  
Polycystic Ovary Syndrome ◽  
Polycystic Ovary ◽  
Vitamin D Status ◽  
Regression Analyses ◽  
Metabolic Disturbances ◽  
Ovary Syndrome ◽  
Weighted Means

ContextMetabolic disturbances, in particular, insulin resistance (IR) and dyslipidemia, are common in women suffering from polycystic ovary syndrome (PCOS). Evidence is accumulating that vitamin D status may contribute to the development of metabolic disturbances in PCOS.ObjectiveThe aim of this study was to carry out a systematic review addressing the association between vitamin D status, vitamin D receptor polymorphisms, and/or polymorphisms related to vitamin D metabolism and metabolic disturbances in women with PCOS.Design and methodsA systematic search of electronic databases was carried out up to January 2013 for observational studies and clinical trials in women suffering from PCOS with outcome measures that were related to vitamin D status. We conducted univariate and multivariate regression analyses of the weighted means to gain insights into the association between vitamin D, BMI, and IR based on existing literature.ResultsWe found 29 eligible trials with inconsistency in their results. One well-designed randomized controlled trial has been carried out until now. Univariate regression analyses of the weighted means revealed vitamin D to be a significant and independent predictor of IR in both PCOS and control women. The significance disappeared after adjustment for BMI in PCOS women.ConclusionsCurrent evidence suggests an inverse association between vitamin D status and metabolic disturbances in PCOS. Owing to the heterogeneity of the studies, it is hard to draw a definite conclusion. The causal relationship between vitamin D status and metabolic disturbances in PCOS remains to be determined in well-designed placebo-controlled randomized clinical trials.

Vitamin D, cortisol, leptin and metabolic markers in women with polycystic ovary syndrome

2019 ◽  
Vol 493 ◽  
pp. S320
Author(s):  
P. Maidana ◽  
A. Fritzler ◽  
G. Fernandez ◽  
D. Gonzalez ◽  
C. Ibar ◽  
...  
Keyword(s):  
Vitamin D ◽  
Polycystic Ovary Syndrome ◽  
Polycystic Ovary ◽  
Ovary Syndrome ◽  
Metabolic Markers
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