scholarly journals Association of Vitamin D Pathway Genetic Variation and Thyroid Cancer

Genes ◽  
2019 ◽  
Vol 10 (8) ◽  
pp. 572 ◽  
Author(s):  
Isabel S. Carvalho ◽  
Catarina I. Gonçalves ◽  
Joana T. Almeida ◽  
Teresa Azevedo ◽  
Teresa Martins ◽  
...  
Keyword(s):  
Vitamin D ◽  
Thyroid Cancer ◽  
Case Control Study ◽  
Tumor Development ◽  
Serum Levels ◽  
Inhibitory Effects ◽  
Increased Risk ◽  
Vitamin D Levels ◽  
Control Study ◽  
Genotype And Allele Frequencies

Vitamin D is mostly known for its role in bone and calcium metabolism. However, studies have suggested that it also has inhibitory effects on tumor development and progression. Genetic variants close to genes that encode crucial enzymes for the synthesis (DHCR7 rs12785878), metabolism (CYP2R1 rs2060793) and degradation (CYP24A1 rs6013897) of vitamin D have been associated with serum levels of vitamin D. The aim of this case-control study was to determine the effect of these variants in the vitamin D pathway on the susceptibility to thyroid cancer. Five hundred patients with differentiated thyroid cancer and 500 controls were genotyped for the DHCR7 rs12785878, CYP2R1 rs2060793, and CYP24A1 rs6013897 variants. Genotype and allele frequencies were compared between patients and controls. The DHCR7 rs12785878 minor allele was associated with thyroid cancer under an additive (OR 1.38, 95% CI 1.15–1.65, p = 0.0004) and codominant (OR 1.88, 95% CI 1.30–2.74, p = 0.0021) model. These findings suggest that DHCR7 polymorphisms may be associated with an increased risk of thyroid cancer due to an effect of this gene on circulating vitamin D levels.

scholarly journals Polymorphisms CYP2R1 rs10766197 and CYP27B1 rs10877012 in Multiple Sclerosis: A Case-Control Study

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
A. Martinez-Hernandez ◽  
E. E. Perez-Guerrero ◽  
M. A. Macias-Islas ◽  
C. A. Nava-Valdivia ◽  
A. Villagomez-Vega ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Vitamin D ◽  
Disease Progression ◽  
Case Control Study ◽  
Case Control ◽  
Nucleotide Polymorphisms ◽  
Increased Risk ◽  
Vitamin D Levels ◽  
25 Oh Vitamin D ◽  
Control Study

Background. Multiple sclerosis (MS) is a chronic autoimmune inflammatory disease. Low vitamin D levels have been reported to be a risk factor for MS, and genetic variances could be implicated. The aim of this study was to evaluate the association of MS with rs10766197 polymorphism of CYP2R1 gene and rs10877012 polymorphism of CYP27B1 gene. The second aim was to analyse whether these polymorphisms are associated with the severity of the progression of MS. Material and Methods. In a case-control study, we included 116 MS patients and 226 controls, all of whom were Mexican Mestizo. MS was diagnosed by McDonald criteria (2017). A complete neurological evaluation was performed to evaluate the severity of disease progression. Serum 25-hydroxyvitamin D [25(OH) vitamin D] levels were measured by ELISA. Single nucleotide polymorphisms rs10766197 of CYP2R1 gene and rs10877012 SNP of CYP27B1 gene were genotyped by real-time PCR. Results. Serum 25(OH) vitamin D levels were lower in MS patients than in controls ( p = 0.009 ). No differences were observed between serum 25(OH) vitamin D levels of MS patients with severe progression compared to low progression ( p = 0.88 ). A higher frequency of the A allele of CYP2R1 rs10766197 was observed between MS patients and controls ( p = 0.05 ). No differences were observed in the frequency of T allele of CYP27B1 rs10877012 ( p = 0.65 ). In subanalysis, patients with GA + AA genotypes of CYP2R1 rs10766197 had an increased risk of MS compared to controls ( p = 0.03 ). No increased risk was observed in GT + TT genotypes of CYP27B1 rs10877012 ( p = 0.63 ). No differences were observed in allele frequencies of either polymorphism between patients with severe vs. low disease progression. Conclusion. Lower serum 25(OH) vitamin D levels were observed in MS patients than in controls, although these levels were not associated with disease progression. Carriers of GA + AA genotypes of CYP2R1 rs10766197 had an increased risk of MS. None of these polymorphisms was associated with severe progression of MS.

Dietary and serum vitamin D and preeclampsia risk in Chinese pregnant women: a matched case–control study

2021 ◽  
pp. 1-26
Author(s):  
Xue-min Huang ◽  
Yan-hua Liu ◽  
Han Zhang ◽  
Yuan Cao ◽  
Wei-feng Dou ◽  
...  
Keyword(s):  
Vitamin D ◽  
Dietary Intake ◽  
Pregnant Women ◽  
Case Control Study ◽  
Serum Levels ◽  
Case Control ◽  
Serum Concentrations ◽  
Matched Case ◽  
Matched Case Control Study ◽  
Control Study

Abstract The effect of vitamin D (VD) on the risk of preeclampsia (PE) is uncertain. Few of previous studies focused on the relationship between dietary VD intake and PE risk. Therefore, we conducted this 1:1 matched case-control study to explore the association of dietary VD intake and serum VD concentrations with PE risk in Chinese pregnant women. A total of 440 pairs of participants were recruited during March 2016 to June 2019. Dietary information was obtained using a 78-item semi-quantitative food frequency questionnaire. Serum concentrations of 25(OH)D2 and 25(OH)D3 were measured by liquid chromatography–tandem mass spectrometry. Multivariate conditional logistic regression was used to estimate odds ratios (ORs) and 95% confidence intervals (CIs). Restricted cubic splines (RCS) were plotted to evaluate the dose-response relationship of dietary VD intake and serum VD concentrations with PE risk. Compared with the lowest quartile, the ORs of the highest quartile were 0.45 (95%CI: 0.29-0.71, Ptrend = 0.001) for VD dietary intake and 0.26 (95%CI: 0.11-0.60, Ptrend = 0.003) for serum levels after adjusting for confounders. In addition, the RCS analysis suggested a reverse J-shaped relationship between dietary VD intake and PE risk (P-nonlinearity = 0.02). A similar association was also found between serum concentrations of total 25(OH)D and PE risk (P-nonlinearity = 0.02). In conclusion, this study provides evidence that higher dietary intake and serum levels of VD are associated with the lower risk of PE in Chinese pregnant women.

scholarly journals Vitamin D Status and Its Role in First-Time and Recurrent Urinary Tract Infections in Children: A Case-Control Study

Children ◽  
2021 ◽  
Vol 8 (5) ◽  
pp. 419
Author(s):  
Carmen Muntean ◽  
Maria Săsăran
Keyword(s):  
Vitamin D ◽  
Urinary Tract ◽  
Case Control Study ◽  
Case Control ◽  
Study Group ◽  
Recurrent Utis ◽  
Vitamin D Levels ◽  
Tract Infections ◽  
First Time ◽  
Control Study

Vitamin D has emerged as a key factor in innate immunity. Its involvement in the pathogenesis of urinary tract infections (UTIs) has gained a lot of attention recently. The objective of this study is to investigate the association between serum 25-hydroxyvitamin D (25(OH)D) levels and first-time or recurrent UTIs in children. A prospective, case-control study was conducted on 101 pediatric patients, who were divided into two groups: 59 patients with UTIs and 42 age-matched healthy controls. Serum 25(OH)D was determined in each child and expressed in ng/mL. Vitamin D presented significantly lower values in study group subjects than in healthy controls (p < 0.01). Moreover, a significantly higher prevalence of vitamin D insufficiency and deficiency was found in children with UTIs (p < 0.01). Patients with recurrent UTIs presented significantly lower levels of vitamin D than those with first-time UTIs (p = 0.04). Urinary tract abnormalities did not seem to exercise an additional effect upon vitamin D levels within the study group. In conclusion, first-time and recurrent UTIs are associated with lower vitamin D levels. Further studies are necessary to validate our findings, as well as future longitudinal research regarding efficacy of vitamin D supplementation in children with UTIs.

scholarly journals Vitamin D Levels in Patients with and without Acne and Its Relation to Acne Severity: A Case-Control Study

2020 ◽  
Vol Volume 13 ◽  
pp. 759-765
Author(s):  
Ghadah Alhetheli ◽  
Ahmed Ibrahim Abd Elneam ◽  
Adel Alsenaid ◽  
Mohammed Al-Dhubaibi
Keyword(s):  
Vitamin D ◽  
Case Control Study ◽  
Case Control ◽  
Vitamin D Levels ◽  
Control Study

Association between vitamin D deficiency and prostate cancer: Prospective case-control study

2021 ◽  
pp. 205141582199360
Author(s):  
Ghanshyam Kumawat ◽  
Vijay Chaudhary ◽  
Anurag Garg ◽  
Nishkarsh Mehta ◽  
Gagan Talwar ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Case Control Study ◽  
Serum Vitamin ◽  
P Value ◽  
Serum Vitamin D ◽  
Severe Vitamin ◽  
Vitamin D Levels ◽  
Control Study

Objective: We aimed to find out the association of low serum vitamin D levels with the incidence of prostate cancer through a prospective case-control study. Material and methods: This study was carried out in the tertiary care hospital (India). All newly diagnosed patients of prostate cancer and age-matched controls were included. Serum vitamin D levels were measured in all of them. Vitamin D status (ng/mL) was classified as severe deficiency <10, moderate deficiency 10–<30, normal 30–100, and toxicity >100. Normality of the data was tested by the Kolmogorov–Smirnov test, statistical analysis was done with Statistical Package for the Social Sciences version 26.0, p-value of <0.05 was considered significant. Results: In our study, 320 cases and 320 controls were included. The mean vitamin D levels in cases and controls were 15.71 ± 6.5 (ng/mL) and 17.63 ± 4.54 (ng/mL), respectively, ( p-Value <0.01). Patients with severe vitamin D deficiency (73.58%) had a Gleason score ⩾8 on biopsy and 79.24% of them had a serum prostate specific antigen (PSA) level >20 ng/mL. Conclusion: We had concluded that there was no significant association between vitamin D deficiency and increased risk of prostate cancer, although patients with higher-grade prostate cancer and with higher PSA level had severe vitamin D deficiency. Level of evidence: Not applicable for this multicentre audit.

Lower Vitamin D Level as a Risk Factor for Late Onset Neonatal Sepsis: An Observational Case–Control Study

2021 ◽  
Author(s):  
Shaimaa Reda Abdelmaksoud ◽  
Mostafa Abdel-Azim Mostafa ◽  
Rana Atef khashaba ◽  
Effat Assar
Keyword(s):  
Vitamin D ◽  
Case Control Study ◽  
Late Onset ◽  
Case Control ◽  
Sepsis Group ◽  
Term Neonates ◽  
Maternal Vitamin ◽  
Vitamin D Levels ◽  
25 Oh Vitamin D ◽  
Control Study

Objective The aim of the study is to investigate the relation of neonatal and maternal vitamin D and late-onset sepsis (LOS) Study Design One-hundred twenty term neonates along with their mothers were enrolled in this case–control study. Sixty neonates who were admitted in the neonatal intensive care unit by LOS and had not been previously admitted for last 48 hours and did not receive antibiotics or vitamin D were enrolled as cases (sepsis) group. On the other hand, 60 healthy term neonates were referred as control group. Maternal and neonatal serum 25-OH vitamin D levels were assessed in both the cohorts. Results Maternal and neonatal 25-OH vitamin D levels in cases (17.2 and 16.1 ng/mL, respectively) were significantly lower than in controls (22.7 and 21 ng/mL, respectively) p = 0.001. In the study group, the neonatal 25-OH vitamin D was negatively correlated with C-reactive protein and length of hospital stay (r = −0.616 and −0.596, respectively) p <0.001 for both. With a cut-off value of 12.9 ng/mL, the specificity and positive predictive value of neonatal vitamin D were 83.3 and 74.4%, respectively. The odds ratio was 1.088 (95% CI = 1.034–1.144)) for LOS in vitamin D-deficient neonates. Conclusion Neonates with higher vitamin D level are at lower risk of LOS than those with vitamin D deficiency. Maternal vitamin D correlates with neonatal vitamin D. These data suggest that maternal vitamin supplementation during pregnancy may lower the risk of LOS. Key Points

Serum levels of 25(OH)D are not associated with venous thromboembolism in the elderly population

2016 ◽  
Vol 115 (01) ◽  
pp. 169-175 ◽  
Author(s):  
Aurélien Delluc ◽  
Marie-Pierre Moineau ◽  
Cécile Tromeur ◽  
Maelenn Gouillou ◽  
Karine Lacut ◽  
...  
Keyword(s):  
Vitamin D ◽  
Venous Thromboembolism ◽  
Seasonal Variations ◽  
Elderly Population ◽  
Serum Levels ◽  
The Elderly ◽  
Vitamin D Status ◽  
Increased Risk ◽  
Vitamin D Levels ◽  
Walking Capacity

SummaryThe prevalence of both vitamin D deficiency and venous thromboembolism (VTE) is important in the elderly. Previous studies have provided evidence for a possible association between vitamin D status and the risk of VTE. Thus, we aimed to investigate the association between vitamin D levels and VTE in the population aged 75 and over included in the EDITH case-control study. The association between vitamin D status and VTE was analysed. We also analysed the monthly and seasonal variations of VTE and vitamin D. Between May 2000 and December 2009, 340 elderly patients (mean age 81.5 years, 32 % men) with unprovoked VTE and their controls were included. The univariate and multivariate analysis found no significant association between serum levels of vitamin D and the risk of unprovoked VTE. In the unadjusted analysis, a higher BMI was statistically associated with an increased risk of VTE (OR 1.09; 95 % CI 1.05–1.13) whereas a better walking capacity and living at home were associated with a decreased rate of VTE: OR 0.57; 95 % CI 0.36–0.90 and 0.40; 95 % CI 0.25–0.66, respectively. Although not significant, more VTE events occurred during winter (p=0.09). No seasonal variations of vitamin D levels were found (p=0.11). In conclusion, in contrast with previous reports our findings suggest that vitamin D is not associated with VTE in the elderly population.

scholarly journals IL-10 Promoter Genetic Polymorphisms and Risk of Kawasaki Disease in Taiwan

2011 ◽  
Vol 30 (1) ◽  
pp. 51-59 ◽  
Author(s):  
Kai-Sheng Hsieh ◽  
Tsung-Jen Lai ◽  
Yu-Tung Hwang ◽  
Ming-Wei Lin ◽  
Ken-Pen Weng ◽  
...  
Keyword(s):  
Kawasaki Disease ◽  
Case Control Study ◽  
Serum Levels ◽  
High Plasma ◽  
Case Control ◽  
Healthy Children ◽  
Increased Risk ◽  
Family Based ◽  
Control Study

Kawasaki disease (KD) is the most common cause of pediatric acquired heart disease. KD patients have spontaneously high plasma/serum levels of IL-10 during the acute phase. Therefore, two independent studies were carried out to investigate the association between genetic variants in IL-10 promoter (−1082, −819, and −592) and risk of KD. A total of 134 trios were included for the family-based association study. A significantly preferential transmission of the C allele at loci −819 T > C and −592 A > C for KD cases was observed (Ppermutation= 0.029 and Ppermutation= 0.034, respectively). There was a significant increase in the transmission of haplotype CC (p= 0.016) at the above two loci (OR, 1.632; 95% CI, 1.090–2.443; Ppermutation= 0.019). We also carried out a follow-up case-control study that included 146 KD cases and 315 unrelated healthy children. {The haplotype CC (−819, −592) showed an increased risk of KD (but statistically non-significant; OR, 1.332; 95% CI, 0.987–1.797;p= 0.061). In diplotype analysis, a trend was found between number of CC haplotype and risk of KD (but non-significant,p= 0.061). In conclusion, CC genotype and CC/CC diplotype at IL-10-819T > C and −592A > C were significantly associated with risk of KD in case-parent trio study, which were replicated partially in our follow-up case-control study.

scholarly journals A case control study of serum vitamin D levels in alopecia areata

2020 ◽  
Vol 8 (10) ◽  
pp. 3550
Author(s):  
Bobbili Tarun Kesava Naidu ◽  
Kavya Baddireddy
Keyword(s):  
Vitamin D ◽  
Alopecia Areata ◽  
Case Control Study ◽  
Serum Vitamin ◽  
Autoimmune Disorder ◽  
Case Control ◽  
Serum Vitamin D ◽  
Vitamin D Levels ◽  
Severity Of The Disease ◽  
Control Study

Background: Alopecia areata is an autoimmune disorder of anagen hair follicle leading to distressing and relapsing non-scarring hair loss. Vitamin D is an immunomodulator and plays a role in regulating normal hair cycle. Recent evidence suggests inconsistent association between vitamin D deficiency and alopecia areata.Methods: This case control study included 70 newly diagnosed cases of alopecia areata and 70 healthy controls. Competitive chemiluminescence immunoassay was used to determine and compare the serum vitamin D (25‑hydroxyvitamin D) levels between these groups. Also, the serum vitamin D levels correlation with severity of the disease was studied. ANOVA test and student t test were used for the statistical analysis.Results: Serum Vitamin D levels were significantly decreased in alopecia areata patients than in controls (p<0.05). There was no stastically significant relationship between serum 25-OH Vitamin D levels and severity of the disease (p=0.06).Conclusions: Prevalence of serum 25 (OH) deficiency was significantly higher in alopecia areata group. However no significant relation was found with disease severity.

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