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KMID : 0988920170150010103
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Intestinal Research
2017 Volume.15 No. 1 p.103 ~ p.108
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Status of serum vitamin B12 and folate in patients with inflammatory bowel disease in China
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Huang Shao Zhong
Ma Jia Yi
Zhu Ming Ming
Ran Zhi Hua
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Abstract
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Background/Aims: Inflammatory bowel disease (IBD) primarily involves the intestinal tract and can affect vitamin absorption. This study was designed to assess the prevalence of vitamin B12 and folate deficiencies in patients with IBD, and to identify the risk factors associated with abnormal serum vitamin B12 and folate levels.
Methods: We evaluated the medical records of 195 patients with Crohn's disease (CD) and 62 patients with ulcerative colitis (UC), and selected 118 healthy subjects for the control group.
Results: There were more CD patients with vitamin B12 deficiency than UC patients (14.9% vs. 3.2%, P=0.014) and controls (14.9% vs. 4.2%, P=0.003). The prevalence of folate deficiency was higher in CD patients than in controls (13.3% vs. 3.4%, P=0.004). There were no significant differences in the serum vitamin B12 and folate statuses of the UC and control groups. Patients with prior ileal or ileocolic resection showed a higher prevalence of abnormal vitamin B12 levels than those without prior resection (n=6/16, n=23/179; P=0.018). A disease duration within 5 years was a risk factor of abnormal folate levels in CD patients.
Conclusions: This study showed that vitamin B12 and folate deficiencies were more common in patients with CD than in UC patients and controls. Prior ileal or ileocolonic resection was a risk factor of serum vitamin B12 abnormalities, and a disease duration within 5 years was a risk factor of low serum folate levels in CD patients.
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KEYWORD
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Vitamin B 12, Folate, Inflammatory bowel disease, Crohn disease, Colitis, ulcerative
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