Objective: The aim of this study was to find an association between serum concentration of vitamin D and vitamin D receptor (VDR) polymorphisms to achieve a sustained virological response (SVR).
Methods: We conducted a case-control study in which 250 participants were recruited and divided into three groups (100 chronic hepatitis C [CHC] patients who achieved SVR, 100 CHC patients who did not achieve SVR and 50 apparently healthy individuals as controls). Blood samples were collected to measure serum vitamin D concentration, and four VDR polymorphisms (FokI, ApaI, TaqI, and BsmI) were detected using polymerase chain reaction-restriction fragment length polymorphism.
Results: Non-responders were found to have significantly low vitamin D concentration compared with responders and control groups. Concerning VDR polymorphisms, both FokI and TaqI polymorphisms were associated with successful treatment.
Conclusion: Vitamin D concentration, FokI, and TaqI may be considered as the predictors for the response of CHC patients to a combination therapy of pegylated interferon and ribavirin.
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http://dx.doi.org/10.1111/1751-2980.12353 | DOI Listing |
Reprod Biomed Online
September 2024
UMF Iuliu Haţieganu, Cluj-Napoca, Romania.
Research Question: Are the combined genotypes and haplotypes of vitamin D receptor (VDR) gene polymorphisms (FokI, ApaI and TaqI) associated with susceptibility to polycystic ovary syndrome (PCOS) and metabolic features of the disease?
Design: This case-control study included 46 women with PCOS and 48 controls. Genotypes of the VDR gene were determined using the polymerase chain reaction-restriction fragment length polymorphism method. Waist circumference, and parameters of lipid and glucose metabolism were evaluated in all women.
J Appl Lab Med
December 2024
Laboratory of Viral Hepatitis, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil.
Background: Exploring polymorphisms in vitamin D-related genes (VDR) within the Brazilian population provides a valuable model to contribute to the influence of the host genetic variants on chronic viral hepatitis B (CHB).
Methods: 126 CHB patients were enrolled in the current study and clinical, laboratory, and 25-hydroxyvitamin D [25(OD)D] level data were obtained. Four VDR (rs7975232, rs1544410, rs10735810, rs731236) and 2 vitamin D-binding protein/carrier globulin (GC) polymorphisms (rs4588 and rs7041) were determined using TaqMan assays and nucleotide sequencing.
Adv Biomed Res
October 2024
Department of Biostatistics and Epidemiology, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
Background: Vitamin D leads to the activation of macrophages and limitation of intracellular growth of Mycobacterium tuberculosis. Vitamin D receptor (VDR) gene polymorphisms can facilitate the development of tuberculosis (TB). Therefore, the present study aimed to investigate the effect of vitamin D supplementation on response to treatment in patients with pulmonary TB for different VDR polymorphisms.
View Article and Find Full Text PDFPLoS One
December 2024
Department of Cardiology and Vascular Medicine, Faculty of Medicine, National Cardiovascular Centre Harapan Kita, Universitas Indonesia, Jakarta, Indonesia.
The association between Vitamin D Receptor (VDR) gene polymorphisms and essential hypertension (EH) remains controversial. We searched databases (Cochrane Library, EBSCO, EMBASE, LILACS, ProQuest, PubMed, Science Direct, Springer) for studies on VDR gene polymorphisms and EH until May 30, 2024, following PRISMA guidelines. RevMan 5.
View Article and Find Full Text PDFJ Nutr Sci
December 2024
Department of Chemical Pathology, National Health Laboratory Services (NHLS), Johannesburg, South Africa.
Polymorphisms in the vitamin D receptor (VDR) gene (BsmI (rs1544410), FokI (rs2228570), ApaI (rs7975232), TaqI (rs731236)) and low vitamin D concentrations have previously been associated with type 1 diabetes (T1D). Vitamin D is thought to mediate the switch from a pro-inflammatory Th1 response to an anti-inflammatory Th2 response which is protective against the development of T1D. These associations are inconsistent across studies and population groups.
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