不同毒力亚株幽门螺杆菌感染在特发性血小板减少性紫癜发病中的意义

目的分析幽门螺杆菌（H.pylori）不同毒力亚株感染与特发性血小板减少性紫癜（ITP）发病的相关性。方法应用免疫印记法检测64例ITP患者和59例对照者的血清H.pylori抗体：细胞毒素相关基因A（CagA）、空泡毒素蛋白A（VacA）、尿素酶A（UreA）、尿素酶B（UreB）,并对CagA＋和/或VacA＋阳性患者随机分组,一组抗H.pylori治疗,另一组、CagA-和VacA-以及H.pylori阴性患者组未作抗H.pylori治疗作为对照组,比较治疗前后血小板计数。结果ITP组患者H.pylori阳性率高于对照组,差异有统计学意义（P〈0.05）;ITP组H.pylori阳性患者CagA＋和/或VacA＋型者所占比例高于对照组,差异有统计学意义（P〈0.001）。CagA＋和/或VacA＋阳性患者经H.pylori根治后血小板计数较CagA＋和/或VacA＋阳性未根治组升高明显,P〉0.05有统计学意义。结论ITP患者幽门螺杆菌的感染率高,而且不同毒力亚株感染与其发病相关。     

儿童幽门螺杆菌相关霉素的检测及临床意义

目的探讨不同H.pylori菌株类型与小儿胃十二指肠黏膜疾病的关系,了解本地区儿童感染的H.pylori菌株类型。方法胃镜下活检及快速尿素酶试验诊断H.pylori感染及观察胃十二指肠黏膜病理变化,用免疫印迹法测定153例H.pylori阳性患儿血清多种H.pylori毒素抗体。结果胃炎患儿Ⅰ型H.pylori菌株为14例(27%),十二指肠球部溃疡患儿Ⅰ型H.pylori菌株为43例(74%),两组检出率比较差异有显著性。CagA抗体阳性者黏膜中重度炎性反应58例(92%),CagA抗体阳性者黏膜轻度炎性反应21例(35%),两组检出率比较差异有显著性。结论本地区儿童感染的H.pylori为Ⅰ型和Ⅱ型毒力菌株,CagA抗体阳性能引起胃十二指肠黏膜较重的炎性反应。     

幽门螺杆菌CagA+感染与球部溃疡产生的关系

【目的】为了解幽门螺杆菌（H．pylori）产毒株（CagA^＋株）感染与十二指肠球部溃疡发生的关系。【方法】58例胃镜检查患者,分成十二指肠球部溃疡（DU）与非溃疡消化不良（NUD）两组,用ELISA方法检测血清CagA抗体（CagA-IgG）滴度并用目测法定性。时两组检测结果进行比较分析。【结果】DU组CagA-IgG光密度值及CagA^＋菌株感染率均高于NUD组,差异有显著性（P〈0．05）。【结论】CagA^＋H．pylori感染与DU产生有关。     

幽门螺杆菌菌株类型与儿童胃窦黏膜炎症程度及细菌定植密度的关系

目的探讨幽门螺杆菌(H.pylori)菌株类型与儿童胃窦黏膜炎症程度及H.pylori定植密度的关系。方法采用免疫印迹法测定134例H.pylori感染患儿血清细胞毒素相关蛋白(CagA)、空泡毒素(VacA)抗体,对H.pylori进行血清学菌株分型,并行胃镜检查,取胃窦黏膜经HE及改良Giemsa染色后观察胃窦黏膜炎症程度及H.pylori定植密度。结果CagA、VacA抗体总检出率分别为85.07%(114/134)、91.04%(122/134),检出H.pyloriⅠ型菌株113例,Ⅱ型菌株11例,中间型菌株10例,各型菌株感染引起胃窦黏膜中重度炎症分别为100例(88.50%),5例(45.45%),5例(50.00%),差异有显著性(H=20.048,P=0.000);110例胃窦黏膜检有H.pylori,其中H.pylori定植密度“ ”63例(57.27%),“ ”32例(29.09%),“ ”15例(13.64%),H.pylori各型菌株患儿胃窦黏膜H.pylori定植密度无明显差异(H=1.366,P=0.505)。结论H.pylori菌株类型与儿童胃窦黏膜炎症程度有关,而与H.pylori定植密度无关,Ⅰ型菌株能引起胃窦黏膜较重的炎症。     

成人慢性免疫性血小板减少症与幽门螺杆菌CagA蛋白的临床相关性研究

目的探讨幽门螺旋杆菌(Helicobacter pylori,H.pylori)CagA蛋白(H.pylori-CagA)在慢性免疫性血小板减少症(Chronic Immune thrombocytopenia,CITP)患者发病中的作用。方法收集四川省人民医院110例伴有H.pylori感染的CITP患者,按就诊先后顺序编号后,应用随机数字表分为治疗组与对照组各55例,进行CagA蛋白抗体定性、定量检测。治疗组接受根除H.pylori治疗,对照组不接受根除H.pylori治疗,其他治疗方案两组相同。6～8周后复查14碳尿素酶呼气试验(14C-urea breath test,14C-UBT),3～5个月随访监测患者治疗前后血小板计数、H.pylori-CagA-IgG浓度变化,比较两组间是否存在显著差异,进而探讨CITP与幽门螺杆菌CagA蛋白的临床相关性。结果 110例患者中46例CagA蛋白抗体阳性,CagA阳性率41.82%(46/110);治疗组23例H.pylori-CagA阳性病例根除H.pylori治疗后血小板计数明显改善,H.pylori-CagA蛋白抗体滴度较前降低,且有效率明显高于对照组,差异均有统计学意义(P<0.05);而32例CagA蛋白抗体阴性病例治疗前后血小板数量变化无统计学意义(P>0.05)。对照组23例H.pylori-CagA阳性病例H.pylori-CagA蛋白抗体滴度及血小板数量变化无统计学意义(P>0.05);32例CagA蛋白抗体阴性病例,治疗前后血小板数量变化无统计学意义(P>0.05)。提示H.pylori-CagA蛋白与CITP的发生、发展密切相关。结论对有H.pylori感染的CITP患者增加血清抗体检测,对于临床上治疗CITP可能有良好的预测作用且H.pylori-CagA抗体阳性者进行根除H.pylori治疗可作为一个新的非免疫治疗的方法,不良反应少。     

广州地区消化道疾病患者中H.pylori ureA和vacA s1基因及cagA基因亚型分布

目的 分析研究广州地区消化道疾病患者中H.pylori ureA、vacA s1基因和cagA基因亚型(ABC、ABD、ABAB、AAD等)的分布状况及其与胃黏膜病理检测结果间的相关性.方法 随机选取227例消化道疾病患者的胃黏膜标本,分别来自病理组织学检测无病理改变者46例,慢性胃炎130例,消化性溃疡29例,萎缩性胃炎15例,胃癌7例.并用实时荧光定量PCR检测H.pylori ureA基因、vacA s1基因,用PCR扩增cagA羧基端EPIYA基序所在区,然后测序确定其亚型.以保守基因ureA的存在判断H.pylori感染.结果 227例消化道疾病患者中,有50.7% (115/227)的患者H.pylori阳性,其中,vacA s1基因阳性91.3%(105/115),cagA基因阳性78.3%(90/115).4种cagA-EPIYA亚型分布为,ABC 17.8%(16/90)、ABD 78.9%(71/90)、AAD 2.2%(2/90)、ABAB 1.1%(1/90).无病理改变组中H.pylori 阳性32.6%(15/46),vacA s1基因阳性28.3%(13/46),cagA基因阳性26.1%(12/46);慢性胃炎组H.pylori 阳性48.5%(63/130),vacA s1基因阳性43.8%(57/130),cagA基因阳性36.2%(47/130);溃疡组H.pylori 阳性72.4%(21/29),vacA s1基因阳性65.5%(19/29),cagA基因阳性55.2%(16/29);萎缩性胃炎组H.pylori 阳性66.7%(10/15),vacA s1基因阳性66.7%(10/15),cagA基因阳性66.7%(10/15);胃癌组H.pylori阳性85.7%(6/7),vacA s1基因阳性85.7%(6/7),cagA基因阳性71.4%(5/7).H.pylori在不同胃黏膜病理组的分布差异有统计学意义(χ2=16.72;P<0.01),溃疡、萎缩性胃炎、胃癌组中H.pylori的分布明显高于无病理改变与炎症组(χ2=16.02;P<0.01).但在H.pylori阳性患者中,强毒力因子vacA s1基因(χ2=2.00;P=0.74)、cagA基因(χ2=3.44;P=0.49)及cagA-EPIYA亚型(χ2=3.66;P=0.45)在无病理改变、炎症、溃疡、萎缩性胃炎及胃癌组中的分布差异均无统计学意义.结论 广州消化道疾病患者中H.pylori的感染与胃黏膜病理改变显著相关,而广州地区消化道疾病患者中H.pylori高毒力亚型的强致病性并不明显,需扩大标本量,再细化疾病种类进一步分析高毒力H.pylori对胃肠道疾病发生的影响.

Abstract：

Objective To detect the distribution of H.pylori ureA, vacA s1 gene and cagA subtype(ABC, ABD, ABAB, AAD, et al) in patients with digestive diseases in Guangzhou and investigate the relationship with the pathological findings of gastric mucosa.Methods A total of 227 randomly selected gastric mucosa from patients with digestive diseases were enrolled in the research, including 46 without pathological changes, 130 with chronic gastritis, 29 with peptic ulcer, 15 with atrophic gastritis and 7 with gastric cancer.Real-time PCR assay were used to detect Helicobacter pylori ureA gene and vacA s1 gene.EPIYA motifs in the 3′ region of cagA were amplified by conventional PCR followed by subtype sequencing. The conserved gene ureA was used to detect H.pylori infection.Results Among the 227 patients with digestive diseases, 50.7% (115/227) patients were H.pylori positive, in which 91.3%(105/115) carried vacA s1 and 78.3% (90/115) carried cagA. Four types of cagA-EPIYA subtype were detected, including ABC 17.8%(16/90), ABD 78.9%(71/90), AAD 2.2%(2/90) and ABAB 1.1%(1/90).In the non-pathological change group, 32.6% (15/46) were H.pylori positive, in which 28.3% (13/46) carried vacA s1 and 26.1% (12/46) carried cagA;in chronic gastritis group, it was 48.5% (63/130), 43.8% (57/130) and 36.2% (47/130), respectively;in ulcer group, it was 72.4% (21/29), 65.5% (19/29) and 55.2% (16/29), respectively;in atrophic gastritis group, it was 66.7% (10/15), 66.7% (10/15) and 66.7% (10/15), respectively;in gastric cancer group, it was 85.7% (6/7), 85.7% (6/7) and 71.4% (5/7), respectively.The distribution of H.pylori among the 4 groups had statistical significance (χ2=16.72;P<0.01). H.pylori was more prevalent in ulcer, atrophic gastritis and cancer group than in inflammation group and non-pathological change group (χ2=16.02;P<0.01).In patients infected by H.pylori, there was no significant difference in the distribution of vacA s1 gene as high virulence factors among non-pathological change, inflammation, ulcer, atrophic gastritis and cancer group (χ2=2.00;P=0.74), as well as cagA (χ2=3.44;P=0.49) and EPIYA subtypes (χ2=3.66;P=0.45).Conclusions H.pylori infection is significantly associated with the pathological change of gastric mucosa for patients with digestive diseases in Guangzhou, while the relationship with the pathogenicity of H.pylori with high virulence genotype is not significant.More samples and diseases reclassification are needed to make an advanced analysis of the effect of H.pylori with high virulence in gastrointestinal diseases development.     

Toll样受体10基因启动子区rs10004195基因多态性与幽门螺杆菌感染的相关性分析

目的探讨Toll样受体10(TLR-10)基因启动子区rs10004195基因多态性与幽门螺杆菌(H.pylori)感染的相关性。方法选取13C-尿素呼气试验确诊的H.pylori阳性201例与阴性182例,用测序方法检测TLR10启动子区rs10004195基因型。结果病例rs10004195基因型分布符合Hardy-Weinberg平衡(P0.05)。H.pylori阳性组AA基因型频率(26.9%)明显高于H.pylori阴性组(18.1%)(χ2=4.150,P0.05,OR=1.66,95%CI:1.02~2.71)。结论 TLR10启动子区rs10004195基因多态性与H.pylori的易感性有关,AA基因型者易感染H.pylori。     

胃癌病人血清CagA抗体检测

目的：探讨细胞毒素相关基因A（CagA）阳性Hp菌株与胃癌的关系。方法：幽门螺杆菌（Hp）阳笥胃癌病人24例，另以Hp阳性浅表性胃炎26例作为对照，采用ELISA定性测定研究对象血清CagA-HpIgG。结果：胃癌组血清CagA-HpIgG阳性率明显高于对照组（P＜0.01）。结果提示：CagA阳性的Hp毒力菌株在胃癌致病过程中起重要作用。     

幽门螺杆菌可塑区的结构及功能研究进展

比较菌株H．pyloriJ99和26695的基因组序列时发现，约占3～4％基因组的基因片段G＋C含量为34～35％，低亍H．pylori整体G＋C含量（39％），被命名为可塑区。可塑区具有明显的菌株特异性，推测与其致病性关的新基因可能位于该区.研究表明可塑区中部分基因已经被确认为H．pylori新的致病标志，流行病学调查发现他们与cagPA1有显著的相关性，并且与临床上的胃溃疡和胃癌的发生及发展有关。     

幽门螺旋杆菌感染和FasL蛋白表达在胃癌发生中的变化

目的 探讨幽门螺旋杆菌(H.pylori)感染和Fas配体(FasL)蛋白表达在胃癌(GC)发生发展中的变化.方法 选取2010年1月至2011年9月在上海浦东新区南汇中心医院诊断的胃部病变169例患者,其中慢性浅表性胃炎(CSG)25例、慢性萎缩性胃炎(CAG)28例、肠化生(IM)37例、异型增生(Dy)38例和胃癌(GC)41例.分别检测胃黏膜组织中H.pylori感染和FasL的蛋白表达,分析H.pylori感染和FasL的蛋白在GC发生发展中的相关性.结果 H.pylori感染率和FasL蛋白阳性表达率随着病情的加重而逐渐增高,Dy组及GC组H.pylori感染率比CSG组明显升高(65.8％和75.6％ vs 16.0％)(P＜0.05);IM组、Dy组及GC组FasL蛋白阳性表达率比CSG组明显升高(64.9％、78.9％和92.7％ vs 28.0％)(P＜0.05) ;GC组FasL蛋白阳性表达率比CAG组及IM组明显升高(92.7％vs 60.7％;92.7％ vs 64.9％)(P＜0.05).除CSG外,H.pylori感染与CAG、IM、Dy和GC胃黏膜组织中的FasL蛋白表达具有一致性,差异有统计学意义(P＜0.01).结论 FasL蛋白表达和H.pylori感染对评估胃黏膜癌前病变发展趋势有重要的临床价值,有助于早期发现和诊断GC.     

Frequencies of serum antibodies to Helicobacter pylori CagA and VacA in a Turkish population with various gastroduodenal diseases

Infection with Helicobacter pylori (H. pylori) strains secreting cytotoxin-associated gene A (CagA) and vacuolating cytotoxin A (VacA) proteins is associated with more severe gastroduodenal pathologies. However, this association varies among geographical regions and ethnic groups. We investigated the frequencies of antibodies to CagA and VacA proteins in 131 H. pylori-infected dyspeptic patients [40 duodenal ulcer (DU), 19 gastric ulcer (GU), 28 gastric cancer (GC), and 44 non-ulcer dyspepsia (NUD)] across 30 H. pylori-infected and endoscopically normal asymptomatic subjects (AS). Anti-CagA and anti-VacA antibodies were detected by Western blotting. The positivity rates of anti-CagA and anti-VacA antibodies were higher in patients with DU (92.5 and 75%), GU (89.5 and 84.2%) and GC (96.4 and 85.7%) than patients with NUD (70.5 and 50%) and AS (50 and 23.3%) (p < 0.05). CagA+ VacA+ phenotype was more frequent in patients with DU, GU and GC than patients with NUD and AS (75, 84.2, 85.7 vs. 47.7 and 20%, respectively) (p < 0.01). Our results showed that there is a significantly positive association between the presence of anti-CagA and anti-VacA antibodies and DU, GU and GC in our region.     

老年人消化性溃疡166例胃镜分析

目的了解我院老年人消化性溃疡（Pu）发病特点。方法分析166例老年人消化性溃疡胃镜报告结果。结果老年人PU的检出率为10.78％,男女之比为4.35：1;胃溃疡（GU）占62.65％,十二指肠溃疡（DU）占30.72％,GU与Du之比为2.08：1,复合性溃疡占6.62％,多发性溃疡占24.1％。结论老年人PU的患者男性多于女性,Gu多于DU,GU的好发部位是胃窦和胃角,DU的好发部位是十二指肠球前壁;PU的幽门螺杆菌（Hp）感染率为81.93％。     

c-Src and c-Abl kinases control hierarchic phosphorylation and function of the CagA effector protein in Western and East Asian Helicobacter pylori strains

Many bacterial pathogens inject into host cells effector proteins that are substrates for host tyrosine kinases such as Src and Abl family kinases. Phosphorylated effectors eventually subvert host cell signaling, aiding disease development. In the case of the gastric pathogen Helicobacter pylori, which is a major risk factor for the development of gastric cancer, the only known effector protein injected into host cells is the oncoprotein CagA. Here, we followed the hierarchic tyrosine phosphorylation of H. pylori CagA as a model system to study early effector phosphorylation processes. Translocated CagA is phosphorylated on Glu-Pro-Ile-Tyr-Ala (EPIYA) motifs EPIYA-A, EPIYA-B, and EPIYA-C in Western strains of H. pylori and EPIYA-A, EPIYA-B, and EPIYA-D in East Asian strains. We found that c-Src only phosphorylated EPIYA-C and EPIYA-D, whereas c-Abl phosphorylated EPIYA-A, EPIYA-B, EPIYA-C, and EPIYA-D. Further analysis revealed that CagA molecules were phosphorylated on 1 or 2 EPIYA motifs, but never simultaneously on 3 motifs. Furthermore, none of the phosphorylated EPIYA motifs alone was sufficient for inducing AGS cell scattering and elongation. The preferred combination of phosphorylated EPIYA motifs in Western strains was EPIYA-A and EPIYA-C, either across 2 CagA molecules or simultaneously on 1. Our study thus identifies a tightly regulated hierarchic phosphorylation model for CagA starting at EPIYA-C/D, followed by phosphorylation of EPIYA-A or EPIYA-B. These results provide insight for clinical H. pylori typing and clarify the role of phosphorylated bacterial effector proteins in pathogenesis.     

慢性胃炎病人血清CagA抗体和胃黏膜炎症活动性及Hp密度检测

目的探讨细胞毒素相关基因A（CagA）对慢性胃炎胃黏膜组织炎症活动性程度、幽门螺杆菌（Hp）密度的影响。方法对慢性胃炎病人80例进行血清CagA抗体检测及胃黏膜组织病理学检查,分析CagA抗体与慢性胃炎病人胃黏膜病理变化之间的关系,以及CagA抗体对慢性胃炎病人Hp密度的影响。结果慢性胃炎病人血清CagA抗体阳性52例（65.0%）,阴性28例（35.0%）。同性别CagA抗体阳性组与阴性组炎症活动性程度比较,差异有显著性（χ2=12.161、6.111,P〈0.05）;肠上皮化生、萎缩、Hp密度差异均无显著性（P〉0.05）。不同性别间各指标差异无显著性（P〉0.05）。结论慢性胃炎CagA抗体阳性病人的胃黏膜中性粒细胞浸润更明显,人体不能有效清除Hp在胃黏膜中的定植。     

老年人消化性溃疡与慢性萎缩性胃炎的相关性研究

目的研究老年人消化性溃疡与慢性萎缩性胃炎的相关性。方法对十二指肠溃疡（DU）、胃溃疡（GU）和复合性溃疡（CU）的老年患者胃窦、胃窦胃体交界处和胃体黏膜以及慢性胃炎（CG）患者胃窦黏膜活检标本进行组织学检查,统计各自胃黏膜的萎缩、肠化生、慢性炎症、活动性和幽门螺杆菌（Hp）感染的发生率。结果 DU患者胃窦、胃窦胃体交界处和胃体黏膜的萎缩发生率分别为54.0%、8.0%和16.0%,肠化生发生率分别为19.0%、6.0%和4.0%。其胃窦黏膜肠化生的发生率明显低于相应的GU、CU或CG者。3种消化性溃疡和CG患者均存在胃窦部慢性炎症,且老年消化性溃疡患者胃体部炎症的发生率较高,其胃炎活动性以胃窦部为主,且均较CG者高。结论老年人消化性溃疡均可有胃窦部灶性萎缩和肠化生发生,但DU胃窦黏膜肠化发生率最低,这可能是老年DU患者罹患胃癌危险性较低的原因之一。     

胃肠相关疾病中幽门螺杆菌感染与胃黏膜白细胞介素-8含量的关系

目的　研究各种胃肠疾病幽门螺杆菌 (Hp)感染情况及其与胃黏膜白细胞介素 8(IL 8)含量的关系。 方法　采用双抗体夹心酶联免疫吸附试验检测 10 2例Hp感染与非感染患者胃黏膜匀浆上清液中的白细胞介素 8含量 ,其中胃镜下黏膜正常者 5例 ,单纯性慢性胃炎 (CG) 2 5例 ,十二指肠球部溃疡 (DU) 36例 ,胃溃疡 (GU) 15例 ,胃癌(Gca) 2 1例。结果　 10 2例中有 6 0例感染了Hp(5 8.8% ) ,其中以十二指肠球部溃疡组Hp感染率最高 (88.9% ) ,明显高于其他组 (均P <0 .0 5 ) ,Hp感染者胃黏膜IL 8含量明显高于非Hp感染者 (P <0 .0 1) ;GU、Gca、DU、CG组胃黏膜IL 8含量均明显高于黏膜正常组 (均P <0 .0 5 ) ,GU、Gca、DU组又明显高于CG组 (均P <0 .0 5 ) ,而GU、Gca、DU组间比较差异无统计学意义 (均P >0 .0 5 ) ;同时发现中度胃炎黏膜IL 8含量明显高于轻度胃炎 ,活动性胃炎又明显高于非活动性胃炎 (均P <0 .0 5 )。结论　Hp感染者与非感染者胃黏膜IL 8含量存在差异 ,疾病组胃黏膜IL 8含量明显高于正常黏膜 ,并与胃炎炎症程度和活动性有一定相关性 ,推测IL 8可能参与了Hp相关性胃炎胃黏膜损伤机制     

Blood flow and morphofunctional status of gastroduodenal mucosa in different phases of peptic ulcer

AIM: To investigate gastric and duodenal mucosal blood flow (MBF) in different phases of gastric ulcer (GU) and duodenal ulcer (DU) and its relation both to Helicobacter pylori (HP) infection and mucosal disorders. MATERIAL AND METHODS: Upper endoscopy and histological examinations (score of inflammation, atrophy, metaplasy) were performed in 407 patients with DU and 103 with GU. Gastric and duodenal MBF were assessed by the hydrogen gas clearance technique in 102 DU and 95 GU patients. HP was detected by histology. Gastric secretion was measured in the interdigestive period and after stimulation by pentagastrin. RESULTS: Lowering of MBF in gastric antrum and duodenum was observed in DU and GU patients only with score 3 of HP infection. DU healing is accompanied with a decrease of HP value and improvement of mucosal histology. At the same time MBF exhibits a significant rise: in the duodenum (by 45%) at the stage of white scar; in gastric antrum (by 26%) and body (by 40%) at healing stage, but a decrease in white scar. During healing of GU gastric MBF reached maximum in active ulcer but in white scar MBF was significantly lower. MBF at ulcer margin and MBF in ulcer crater was the same (30 ml/min/100 g) with MBF in the region of white scar with enhanced inflammation (score 2.1) before GU relapse. CONCLUSION: Changes of MBF in different phases of ulcer are, in part, determined both by HP and by mucosal morphological disorders. The ratio MBF increase in ulcer healing/MBF reduction in ulcer relapse is the same (30% from optimal) and it is restitution entity. The MBF level of 30 ml/min/100 g was assessed as crucial in ulcerogenesis. Lowering MBF in mucosa with remaining inflammation in the scar region may predict GU relapse.     

胃肠道相关疾病患者幽门螺杆菌CagA抗体阳性率分析

目的探讨胃肠道相关疾病患者幽门螺杆菌（HP）感染、CagA抗体检测阳性与所患疾病类型间的关系。方法纳入研究的对象包括本院消化内科住院的320例胃肠道相关疾病患者和同期于本院进行体检的健康体检者200例,共520例。采用蛋白质印迹（WB）法和”C-尿素呼气试验对520例上述人群进行HP感染的检测,采用WB检测CagA抗体,并对检测结果进行比较分析。结果320例患者和200例健康体检者”c-尿素呼气试验阳性率分别为60．9％（195／320）和55％（110／200）,WB检测HP抗体的阳性率分别为68．4％（219／320）和61．0％（122／320）。2种方法检测HP感染的阳性率差异无统计学意义（P〉O．05）;患者和健康体检者HP感染的阳性率差异无统计学意义（P〉0．05）。慢性胃炎、胃及十二指肠溃疡、食管炎、胃癌患者及健康体检者CagA抗体的阳性率分别为43．1％、66．7％、51．3％、70．0％、21．5％;不同胃相关疾病患者CagA抗体阳性率的差异无统计学意义（P〉O．05）;不同胃肠道相关疾病患者CagA抗体阳性率均高于健康体检者（P〈O．05）。结论CagA是HP分泌的重要毒力因子之一,感染的HP大多数为CagA阳性菌株,抗体阳性较阴性者更易放生严重的组织炎症和损伤,同胃肠道相关疾病的发生密切相关。     

Prevalence of Helicobacter pylori Infection in Peptic Ulcer Patients of Highly Endemic Kashmir Valley

Objective This study aimed to find out prevalence of Helicobacter pylori (H. pylori) in peptic ulcer disease (PUD) which is highly endemic disease in Kashmir.Method This study consisted of 50 PUD patients and 30 asymptomatic volunteers. Peptic ulcer was diagnosed by endoscopic examination and H. pylori was detected by histology (using Giemsa stain), one minute endoscopy room test (OMERT) and modified Gram's staining. Positive results from OMERT plus histology were considered as the "gold standard" for the presence of H. pylori.Results Out of 50 patients, 46 had duodenal ulcer (DU), 2 had benign gastric ulcer (GU) and 2 had both DU and GU. The sensitivity and specificity of OMERT were 94% and 96.70%, histology 97.90% and 96.90% and Gram's staining 91.30% and 85.30%, respectively, as compared to our gold standards. H. pylori was present in 76.09% of DU, 50% of GU, whereas patients with duodenitis, channel ulcers, chronic active DU and those with multiple ulcers were 100% H. pylori positive. H. pylori was present in 10 (33.33%) of healthy volunteers.Conclusion A significant association between H. pylori infection and PUD was found in this study. However, there seem to be other causative factors as well which contribute for this highly endemic disease.     

幽门螺杆菌感染与十二指肠胃上皮化生及胃泌素之间关系的研究

目的　通过对幽门螺杆菌 (Hp)感染与十二指肠胃上皮化生 (DGM )及胃泌素 (GAS)关系的研究 ,探讨Hp导致十二指肠溃疡 (DU)的发病机制。 方法　检测了 12 1例患者内镜、病理、Hp感染及DGM情况。同时测定了其中 6 6例患者的血清GAS浓度。结果　球部有溃疡者 ,胃及球部Hp检出率均显著高于球部无溃疡者 (P <0 .0 0 1) ;但球部Hp检出率在DU与CU、GU与CG之间无差别 (P >0 .0 5 ) ;球部有溃疡者DGM的检出率显著高于球部无溃疡者 (P <0 .0 0 1) ,且前者的DGM程度更重 (P <0 .0 0 1) ,但在DU与CU、GU与CG之间无差别 (P >0 .0 5 ) ;胃部Hp阳性者DGM的发生率 (73.0 % )显著高于胃部Hp阴性者 (37.5 % ,P <0 .0 0 1) ,DGM( )及以上者在Hp阳性组发生率 (47.2 % )也高于Hp阴性组 (2 1.9% ,P <0 .0 5 ) ;Hp阳性者血清GAS浓度显著高于Hp阴性者 (P <0 .0 1) ,但血清GAS浓度在Hp阳性的DU、CU、GU与CG之间无差别(P >0 .0 5 ) ;有DGM者血清GAS浓度也显著高于无DGM者 (P <0 .0 1) ,且随着DGM程度的加重 ,血清GAS浓度早递增趋势 ,两者呈正相关 (rs=0 .4 2 ,P <0 .0 1)。结论　Hp感染特别是十二指肠Hp定植及DGM是影响DU发生、发展的两大危险因素。Hp可影响DGM的发生与发展 ,其中部分可能通过增加血清GAS分泌的作用。