活动性炎症性肠病患者蛋白质和脂代谢的变化

目的 比较炎症性肠病患者及正常对照者之间蛋白质和脂代谢的差异,研究这些差异与疾病活动性及病变部位的关系.方法 回顾性研究1995至2007年溃疡性结肠炎(UC)195例、克罗恩病(CD)76例及正常对照者97名的蛋白质和脂代谢资料.同时评价临床疾病活动指数,红细胞沉降率(ESR)和C-反应蛋白(CRP)水平.性别分层分析蛋白质和脂代谢指标的改变,同时分析蛋白质和脂代谢的改变与疾病活动性及病变部位的关系.结果 UC患者的ESR与血清白球比呈负线性相关(β=-0.521,P＜0.01),与α2-球蛋白呈正线性相关(β=0.319,P＜0.01);CD患者血清球蛋白与ESR(β=0.558,P＜0.01)以及cRP(β=0.424,=P0.01)呈正线性相关.UC患者间因病变部位不同,血清白球比、白蛋白和总胆固醇水平存在显著差异,其中直乙结肠炎患者该三项显著高予其他类型的UC患者(P值分别=0.003、0.005、0.038).CD患者间亦因病变部位不同,血清球蛋白水平存在显著差异,仅累及结肠者的血清球蛋白水平显著高于单纯小肠受累者(P=0.029).结论 UC患者血清白球比和α2-球蛋白的异常程度可作为炎症活动性的预测因素;CD患者血清球蛋白增高预示疾病严重程度活动性增加,累及小肠的CD患者相对仅累及结肠的CD患者而言存在更为严重的营养缺失.

The changes of protein and lipid metabolism in patients with active inflammatory bowel disease

Objective To compare the difference of protein and lipid metabolism between patients with inflammatory bowel disease and healthy controls,and to investigate the association of these changes with disease activity and location of the lessions.Methods The retrospective cohort study was carried out.The data of protein and lipid metabolisms collected from 195 patients with ulcerative colitis,76patients with Crohn's disease and 97 healthy controls during 1995 to 2007 were analyzed.Disease activity were evaluated using simple clinieal colitis activity index and simple index of Crohn's disease activity.The erythrocyte sedimentation rate(ESR)and C-reactive protein(CRP)were measured.Results Serum levels of ESR in patients with ulcerative colitis were negatively linear correlated with serum levels of albumin/globulin ratio(β=-0.521,P＜0.01)and positively linear correlated with serum levels of α2globulin(β=0.319,P＜0.01).Serum levels of globulin in patients with Crohn's disease were positively linear correlated with serum levels of ESR(β=0.558,P＜0.01)and CRP(β=0.424,P=0.01).In ulcerative colitis,serum levels of albumin/globulin ratio,albumin and total cholesterol were significantly higher in patients with proctosigmoiditis than those in patients with lesions at other locus(P=0.003,0.005,0.038,respectively).In Crohn's disease,serum level of globulin was significantly higher in patients with lesions only at colon than that in patients with lesions only at small bowel(P=0.029).Conclusions Serum levels of albumin/globulin ratio and α2-globulin can be predictors of inflammatory activity in patients with ulcerative colitis.The increasing serum globulin may predict the progression of disease activity in patients with Crohn's disease.The nutritional deficiency is more critical in patiens with small bowel involvement than those with colon involvement.