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[Association between vitamin D receptor gene polymorphisms and pediatric Crohn's disease in China: a study based on
You-You Luo1, Xiao-Li Shu, Hong Zhao
1Department of Gastroenterology, Children's Hospital of Zhejiang University, School of Medicine, Hangzhou 310003, China. hzcjie@zju.edu.cn.
Insights
Pediatric Crohn's disease (CD) patients in China exhibit lower serum vitamin D levels. However, specific vitamin D receptor (VDR) gene polymorphisms (TaqI, BsmI, ApaI) do not appear to be associated with CD susceptibility in this population.
Area of Science:
- Genetics
- Immunology
- Pediatrics
Context:
- Crohn's disease (CD) is a chronic inflammatory bowel disease affecting children.
- Vitamin D deficiency is common in CD patients.
- Vitamin D receptor (VDR) gene polymorphisms may influence disease susceptibility.
Purpose:
- To examine the relationship between VDR gene polymorphisms (TaqI, BsmI, ApaI) and pediatric CD in China.
- To compare serum 25-hydroxyvitamin D3 [25(OH)D3] levels between pediatric CD patients and healthy controls.
Summary:
- This study analyzed 19 pediatric CD cases and 122 healthy controls in China.
- Serum 25(OH)D3 levels were significantly lower in children with CD compared to controls.
- No significant differences were found in the genotype or allele frequencies of VDR gene polymorphisms (TaqI, BsmI, ApaI) between the groups.
Impact:
- Findings suggest that low serum vitamin D levels are associated with pediatric CD in China.
- The studied VDR gene polymorphisms may not be a significant genetic factor for CD susceptibility in the Chinese pediatric population.
- Further research is needed to explore other genetic and environmental factors contributing to pediatric CD.
Objective:
To investigate the association between TaqI, BsmI, and ApaI polymorphisms of vitamin D receptor (VDR) gene and pediatric Crohn's disease (CD) in China.
Methods:
Nineteen children with CD were selected as a case group, and 122 healthy children who underwent physical examination were selected as a control group. Serum 25-hydroxyvitamin D3 [25(OH)D3] levels were measured using ELISA. The TaqI, BsmI, and ApaI polymorphisms of VDR gene were determined by gene sequencing, and the two groups were compared in terms of genotype and allele frequencies.
Results:
The case group had significantly lower serum 25(OH)D3 levels than the control group (17.3±2.4 ng/mL vs 26.9±2.1 ng/mL; P<0.05). There were no significant differences in the frequencies of genotypes and alleles of TaqI, BsmI, and ApaI polymorphisms between the case and control groups (P>0.05).
Conclusions:
Children with CD have low serum 25(OH)D3 levels. TaqI, BsmI, and ApaI polymorphisms of VDR gene may not be associated with susceptibility to CD among the Chinese population.
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