老年人心脑疾病与Hp抗体关系的研究

目的 探讨幽门螺杆菌（Hp）感染与老年人心脑疾病的关系。方法 采用酶联免疫法检测82例老年人心脑疾病患者和42例健康人血清Hp抗体IgG、IgA、IgM的含量，并进行对照分析。结果 心肌梗塞组与脑梗塞组的Hp抗体IgG、IgA、IgM阳性率均分别达到80％、60％、20％以上，两组结果比较差异无显著性（P〉0．05）。对照组Hp抗体IgG、IgA、IgM阳性率分别为44．6％、25．5％、12．8％，明显低于心肌梗塞组和脑梗塞组。结论 Hp感染可能与老年人心脑疾病的发病有关。     

儿童幽门螺杆菌感染患儿不同治疗方案的疗效观察

目的观察克拉霉素、阿莫西林、奥美拉唑三联短程疗法对幽门螺杆菌(Hp)感染的根除率,探讨初治失败后治疗方案的选择。方法经胃镜检查、组织活检确诊为Hp感染患儿86例,男50例,女36例。分为克拉霉素组62例,用克拉霉素、阿莫西林、奥美拉唑三联1周疗法;甲硝唑组24例,用甲硝唑、阿莫西林、奥美拉唑三联2周疗法。停药后4周,检测Hp根除率。对2组初治失败者进行复治,克拉霉素组增加克拉霉素剂量和延长奥美拉唑疗程;甲硝唑组采用克拉霉素三联1周疗法。复治再失败者采用铋剂四联疗法。结果克拉霉素组Hp根除率91.9%(57/62)较甲硝唑组75%(18/24)高,有显著性差异(χ2=4.448P<0.05)。本组共11例根除失败,采用3种复治方法后,根除率分别为80%(4/5)、66.7%(4/6)、100.0%(3/3)。结论克拉霉素三联1周短程疗法是根除儿童Hp感染的理想治疗方案。适当增加克拉霉素剂量和延长奥美拉唑疗程可提高根除率。采用铋剂四联法对克拉霉素耐药者有效。     

幽门螺旋杆菌感染者的Th1/Th2和Treg细胞免疫应答及其相关性分析

目的：探讨幽门螺旋杆菌Hp感染胃部疾病患者Th1/Th2及Treg细胞表达量的变化及其相关性。方法：收集Hp感染无症状者，慢性浅表性胃炎、慢性萎缩性胃炎、肠的化生、不典型增生及胃癌患者的全血，利用胃黏膜尿素酶试验、ELISA和免疫印迹检测Hp的感染；采用流式细胞术检测Th1细胞、Th2细胞的表达水平，以及Treg细胞的表达。结果：在不同胃部疾病伴Hp感染者中，随着疾病的进展，Th1细胞的表达没有显著性变化，而Th2细胞的表达逐渐增加，Th1／Th2逐渐降低，而Treg细胞的表达逐渐增加．且Th1／Th2与Treg细胞的表达二者之间呈显著负相关。结论：在Hp感染者中，Th1／Th2及Treg细胞在调节HD感染的免疫应答中起重要作用，且与Treg细胞的表达增多呈显著负相关，与癌症的发生有一定的相关性。     

胃炎患者血清幽门螺杆菌分类抗体免疫印迹检测的临床意义

目的:研究胃炎患者血清幽门螺杆菌分类抗体免疫印迹检测的临床意义。方法:用14C呼气试验检测幽门螺杆菌感染;用免疫印迹法检测幽门螺杆菌分类抗体。结果:152例临床各型胃炎患者中,140人14C-呼气试验阳性(92.11%)。14C-呼气试验阳性组Hp分类抗体中CagA、VacA双阳性或单项阳性者127人(90.71%);阳性预测值90.7%,阴性预测值9.3%。结论:14C-呼气试验与幽门螺杆菌分类抗体两种方法组合检测,对临床幽门螺杆菌的诊断与治疗有重要作用;免疫印迹法检测幽门螺杆菌分类抗体,有简便、敏感、特异、快速的优点。     

Long-term persistence of molecular disease after histological remission in low-grade gastric MALT lymphoma treated with H. pylori eradication. Lack of association with translocation t(11;18): a 10-year updated follow-up of a prospective study.

BACKGROUND: Localized low-grade gastric mucosa-associated lymphoid tissue (MALT) lymphoma can regress after Helicobacter pylori eradication, but IgV(H) gene monoclonality may persist. We studied the long-term histological and molecular follow-up of 24 patients and the possible association of t(11;18) with the persistent monoclonality. PATIENTS AND METHODS: From January 1994, 24 untreated patients with stage I low-grade gastric MALT lymphoma associated with H. pylori were prospectively studied. They all received eradication treatment and were sequentially followed-up with endoscopies for histological and molecular studies. Rearrangement of the IgV(H) gene was studied by PCR analysis. MALT1 locus alterations were studied by FISH. RESULTS: Twenty-two of the 24 patients (91%) achieved disappearance of the lymphoma. Eighteen (82%) of the 22 histologically cured patients and 16 of the 19 (84%) with long follow-up had monoclonality. Three patterns of development of IgV(H) gene rearrangements were observed: four patients (21%) had polyclonal rearrangements; eight (58%) had maintained/intermittent monoclonality and four (21%) had occasional monoclonality, mostly after H. pylori reinfection. Only one patient (6%) with persistent monoclonality relapsed. The remaining 18 patients maintained the remission, despite the persistent monoclonality in 15, for a median of 66 months (range 20-113). t(11;18) was not found in any of the patients with persistent monoclonality. Time and the number of endoscopies performed were not related with the occurrence of monoclonality. CONCLUSIONS: In stage I low-grade gastric MALT lymphoma eradication of H. pylori achieves prolonged histological remission in 90% of patients, but molecular remission is not accomplished in most cases. Molecular disease persists for years, but is not associated with t(11;18).     

Risk Factors of Gastric Cancer in Wuwei City- an Endemic Region of Gastric Cancer

OBJECTIVE Studies have shown that risk factors of gastric cancer include living habits, eating moldy pickled food, dystrophy, lack of nutrients, and genetics, etc. This study explores the prevalence of these factors in Wuwei, a city in northwest China with a high incidence of gastric cancer.METHODS Family histories of the residents in Wuwei City were investigated with a case-control method. Segregation ratio and heredity degree of gastric cancer were calculated using theLi-Mantel-Cart and Falconer's regression methods. Chronic gastritis patients were followed-up by home visits, gastroscopy, and pathology. Carcinogenic fungi and volatilile N-nitroso compounds were noted in the residents' meals. Helicobactor pylori (Hp) was assessed in their gastric mucosa and the total content of serum vitamin C in 293 healthy adults was determined.RESULTS In Wuwei City, the segregation ratio of gastric cancer was 0.077. The heredity degree of first-degree relatives was 22.91%. The incidence rate of cancer per year in people in an atrophic gastritis group was 1.09%. Eight kinds of nitrosamines and 14 kinds of carcinogenic fungi were detected in the residents' food. Total average vitamin C in the serum of the 293 healthy adults in the summer was 5.74±2.79 mg/L. The positive rate of Hp in gastric mucosa of the residents was 67%.CONCLUSION The majorextrinsic factors include infection of Hp, atrophic gastritis (especially atrophic hyperplasia), and genetic susceptibility.     

雷贝拉唑与泮托拉唑治疗十二指肠溃疡的对照评价

目的:评价雷贝拉唑和泮托拉唑治疗十二指肠溃疡的临床疗效及其安全性.方法:将Hp检测阳性,内镜检查为活动期十二指肠溃疡的患者分为治疗组(雷贝拉唑三联疗法);对照组(泮托拉唑三联疗法);服药1周.两组继续使用雷贝拉唑或泮托拉唑1周为1疗程.结束后第28天复查内镜并检测Hp.结果:内镜检查结果和Hp检测结果及不良反应两组对比无统计学差异(P＞0.05).结论:雷贝拉唑和泮托拉唑对十二指肠溃疡具有良好的治疗作用和安全性.     

二种三联根除幽门螺杆菌(Hp)治疗方案的疗效观察

目的观察二种三联根除幽门螺杆菌(Hp)治疗方案的效果。方法顺序随机取本院消化科就诊,有临床症状,行胃镜检查,同时进行Hp检测,将316例Hp阳性患者平分二组,分别给予二种不同方案的正规三联根除Hp治疗1周,四周后复查Hp阴性者为根除,阳性者仍为感染(即抗Hp无效)。结果用方案一正规根除治疗1周的158例患者中,四周后用同样方法复查患者Hp感染的情况,完全转阴者137例,占86.7%,仍为阳性者21例,占13.3%,用方案二根除Hp治疗的158例者完全转阴者88例,占55.7%,仍为阳性者70例,占44.3%。结论方案-较方案二根除Hp的效果显著,根除率高,更适合临床应用。