过敏性紫癜伴幽门螺杆菌感染患儿肠道菌群变化的研究

目的 研究过敏性紫癜(HSP)伴有幽门螺杆菌(H.pylori)感染患儿肠道菌群的变化.方法 随机收集40例HSP患儿及40例正常儿童的粪便标本,先用快速免疫检测卡进行粪便幽门螺杆菌抗原(HpSA)检测,判定有无H.pylori感染.然后提取两组粪便标本目标细菌DNA,采用16SrRNA荧光定量PCR技术对两组粪便标本中的双歧杆菌和大肠杆菌进行定量分析和比较.并计算双歧杆菌/大肠杆菌(B/E)比值.结果 HSP患儿H.priori检出率为50.0%,正常儿童为27.5%(x2=4.266.P<0.05).双歧杆菌在HSP伴H.Pylori感染组和HSP非H.pylori感染组分别与正常儿童H.pylori感染组和非H.pylori感染组相比,数鼍明显减少(P<0.008 3);大肠杆菌在正常儿童H.pylori感染组和非H.pylori感染组分别与HSP非H.pylori感染组相比,数量明显升高(P<0.008 3),在HSP伴H.pylorii感染组与HSP非H.pylori感染组相比,数量明显升高(P<0.008 3).B/E值在HSP伴H.pylori感染组分别与HSP非H.pylori感染组、正常儿童H.priori感染组和正常儿童非H.pylon感染组相比,数值明显降低(P<0.008 3).结论 HSP患儿H.pylori检出率较正常儿童明显增多,HSP发病可能与H.pylori感染有关.HSP伴H.pylori感染和HSP非H.pylori感染患儿肠道双歧杆菌均较正常儿童减少,HSP伴H.pylori感染患儿肠道大肠杆菌较HSP非H.pylori感染息儿升高,HSP伴H.pylori感染患儿B/E值明显降低,提示HSP患儿肠道菌群失调明显.

Detecting the variation of intestinal microflora in children with Henoch-Schonlein purpura accompanied by Helicobacter pylori infection

Objective To detect the changes of intestinal microflora in children with Henoch-Schonlein purpura (HSP) accompanied by Helicobacter pylori (H.pylori) infection. Methods The fecal samples were collected randomly from 40 children with HSP and 40 healthy children. First, H.pylori stool antigens (HpSA) were tested for confirming H.pylori infection by Rapid Immuno Card STAT. Then, the bacterial DNA was extracted from the feces for detecting the bifidobacterium and Escherichia coli by 16SrRNA fluorescent quantit...