scholarly journals Serum vitamin D levels and ovarian reserve markers in secondary amenorrhea patients: Is there a link?

2020 ◽  
Vol 63 (4) ◽  
pp. 521-528
Author(s):  
Gyung-Mee Kim ◽  
Gyun-Ho Jeon
Keyword(s):  
Vitamin D ◽  
Ovarian Reserve ◽  
Serum Vitamin ◽  
Secondary Amenorrhea ◽  
Serum Vitamin D ◽  
Vitamin D Levels ◽  
Ovarian Reserve Markers

scholarly journals The effect of serum vitamin D levels on ovarian reserve markers: a prospective cross-sectional study

2016 ◽  
Author(s):  
Panagiotis Drakopoulos ◽  
Arne van de Vijver ◽  
Valerie Schutyser ◽  
Stevan Milatovic ◽  
Ellen Anckaert ◽  
...  
Keyword(s):  
Vitamin D ◽  
Ovarian Reserve ◽  
Serum Vitamin ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Serum Vitamin D ◽  
Vitamin D Levels ◽  
Ovarian Reserve Markers

scholarly journals A systematic review and meta-analysis of the association between vitamin D and ovarian reserve

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Elham Karimi ◽  
Arman Arab ◽  
Masoumeh Rafiee ◽  
Reza Amani
Keyword(s):  
Systematic Review ◽  
Vitamin D ◽  
Ovarian Reserve ◽  
Meta Analysis ◽  
Serum Vitamin ◽  
Normal Body Mass Index ◽  
Adult Women ◽  
Female Reproduction ◽  
Serum Vitamin D ◽  
Vitamin D Levels

AbstractIt is hypothesized that vitamin D deficiency could be related to ovarian reserve. This systematic review and meta-analysis was undertaken to analyze the possible association between vitamin D and ovarian reserve among adolescent and adult women. All eligible studies identified through the ISI Web of Science, PubMed, and Scopus were included up to May 2021. A random-effects meta-analysis model was implemented and a weighted mean difference (WMD) and 95% confidence interval (CI) were calculated. A total of 38 papers covering 8608 individuals were enrolled in this systematic review and meta-analysis. Antral follicle count (AFC) was significantly lower among Asians (WMD − 0.65; 95% CI − 1.28 to − 0.01; P = 0.04; I2 = 0.0%) and luteinizing hormone (LH) levels were higher in non-Asians (WMD 2.16 IU/L; 95% CI 0.20 to 4.12; P = 0.031; I2 = 9.3%) with vitamin D insufficiency/deficiency. Also, there was a negative correlation between vitamin D and LH/FSH ratio in women with normal body mass index (BMI) (Fisher’s Z: − 0.18; 95% CI − 0.37 to − 0.008; P = 0.041; I2 = 51.5%). Although there were no significant associations between serum vitamin D levels and any of the intended ovarian reserve markers, subgroup analyses have found significant findings regarding AFC, LH, and LH/FSH ratio. In order to understand the underlying mechanisms of vitamin D in female reproduction, further attempts are needed.

scholarly journals Study of Correlation of Serum Vitamin D Levels and Ovarian Reserve in Infertile Patients

2019 ◽  
Vol 7 (1) ◽  
pp. 101-107
Author(s):  
Kalki Hymavathi ◽  
◽  
Malini Devi G ◽  
Vineela P ◽  
Naga Jyothi G ◽  
...  
Keyword(s):  
Vitamin D ◽  
Ovarian Reserve ◽  
Serum Vitamin ◽  
Serum Vitamin D ◽  
Vitamin D Levels ◽  
Infertile Patients

Clinical factors correlated with vitamin D deficiency in patients with obesity scheduled for bariatric surgery: A single center experience

2020 ◽  
Vol 90 (3-4) ◽  
pp. 346-352
Author(s):  
Vincenzo Pilone ◽  
Salvatore Tramontano ◽  
Carmen Cutolo ◽  
Federica Marchese ◽  
Antonio Maria Pagano ◽  
...  
Keyword(s):  
Bariatric Surgery ◽  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Serum Vitamin ◽  
Inverse Correlation ◽  
Model Assessment ◽  
Cross Sectional ◽  
Serum Vitamin D ◽  
Female Sex ◽  
Vitamin D Levels

Abstract. We aim to assess the prevalence of vitamin D deficiency (VDD) in patients scheduled for bariatric surgery (BS), and to identify factors that might be associated with VDD. We conducted a cross-sectional observational study involving all consecutive patients scheduled for BS from 2017 to 2019. The exclusion criteria were missing data for vitamin D levels, intake of vitamin D supplements in the 3 months prior to serum vitamin D determination, and renal insufficiency. A total of 206 patients (mean age and body mass index [BMI] of 34.9 ± 10.7 years, and 44.3 ± 6.99 kg/m2, respectively) met the inclusion criteria and were enrolled for data analysis. VDD (<19.9 ng/mL), severe VDD (<10 ng/mL), and vitamin D insufficiency (20–29.9 ng/mL) were present in 68.8 %, 12.5 %, and 31.2 % of patients, respectively. A significant inverse correlation was found between vitamin D levels and initial BMI, parathyroid hormone, and homeostatic model assessment of insulin resistance (r = −0.280, p < 0.05; r = −0.407, p = 0.038; r = −0.445, p = 0.005), respectively. VDD was significantly more prevalent in patients with higher BMI [−0.413 ± 0.12, CI95 % (−0.659; −0.167), p = 0.006], whereas no significant association between hypertension [−1.005 ± 1.65, CI95 % (−4.338; 2.326), p = 0.001], and diabetes type 2 (T2D) [−0.44 ± 2.20, CI95 % (−4.876; 3.986), p = 0.841] was found. We observed significant association between female sex and levels of vitamin D [6.69 ± 2.31, CI95 % (2.06; 11.33), p = 0.006]. The present study shows that in patients scheduled for BS, VDD deficiency is common and was associated with higher BMI, and female sex.

Association of Vitamin D Levels and Other Risk Factors with Asthma Exacerbations in Children

2020 ◽  
Keyword(s):  
Risk Factors ◽  
Vitamin D ◽  
Serum Vitamin ◽  
Persistent Asthma ◽  
Food Allergies ◽  
P Value ◽  
Serum Vitamin D ◽  
Asthma Exacerbations ◽  
Vitamin D Levels ◽  
Animal Dander

Background: The risk factors for asthma exacerbations are well understood. However, the effect of vitamin D levels on number of asthma exacerbations per year is not clearly studied. The objective of the study was to find out the association of serum vitamin D levels and asthma risk factors on asthma exacerbations. Methods: In this study, ninety-nine subjects from 5 to 15 years of age were recruited at an episode of acute exacerbation. It was a cross sectional study and carried out from 2012 to 2015. Pulmonary function test was done by spirometry. Asthma exacerbation was labeled when forced expiratory volume/ forced vital capacity (FEV1/FVC) ratio was less than 80% (American Thoracic Society). Global Initiative for Asthma (GINA) guidelines were used to classify asthma into mild, moderate and severe persistent asthma. Serum vitamin D levels were measured by chemiluminescence method. Pearson Chi-square test was applied and p value (p<0.05) was considered as statistically significant. Results: Children who had exposure to animal dander had significantly lower asthma exacerbations per year (p-value <0.046). There was no significant association between vitamin D levels and number of exacerbations per years (p-value <0.099). Asthma was prevalent in girls of low socioeconomic status (SES) compared to males. However, there was no significant association between smoke, exercise, home environment, food allergies, weather, pollen and dust with asthma exacerbations. Conclusion: Low levels of vitamin D were not associated with increased number of asthma exacerbations per year. However, children exposed to animal dander had lesser number of exacerbations per year (p-value <0.046). Keywords: Asthma; Vitamin D; Children; Exacerbations, Risk factors.

scholarly journals Impact of the 2020 Victorian COVID lockdown measures on serum vitamin D levels

Pathology ◽  
2021 ◽  
Vol 53 ◽  
pp. S40
Author(s):  
Michael B. Theophilos ◽  
Catherine Lynch ◽  
Jasmina Nguyen ◽  
Ken A. Sikaris
Keyword(s):  
Vitamin D ◽  
Serum Vitamin ◽  
Serum Vitamin D ◽  
Vitamin D Levels
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