CagA+Hp感染与消化性溃疡

目的本文旨在探讨十二指肠球部溃疡、胃溃疡等与产细胞毒相关蛋白A幽门螺旋杆菌(CagA+Hp)感染的关系.方法分为三组即无症状对照组、十二指肠球部溃疡及胃溃疡组,Hp感染以快速尿素酶试验(RUT)、14C-呼气试验(14C-URT)和(或)病理特殊染色确定,CagA+Hp感染则进一步通过检测血清CagA IgG加以确定.分别计算各组Hp及CagA+Hp的感染率及Ca-gA+Hp占Hp感染的比例,并作组间比较.结果消化性溃疡时,Hp及CagA+Hp的感染率以及CagA+Hp与Hp感染者之比率均明显高于正常对照组,统计学差异显著(P＜0.01).结论Hp与十二指肠球部溃疡及胃溃疡的发生高度相关,其感染率达90%以上,其中产CagA型Hp又占九成以上,可见CagA+Hp感染与消化性溃疡关系密切,这在消化溃疡的防治中应引起足够的重视.     

Hp相关性胃疾病与胃肠化生、不典型增生的关系

目的探讨Hp感染与肠化生、不典型增生等胃癌前期病变的关系.方法693例胃病患者,分慢性浅表性胃炎(CSG)、慢性萎缩性胃炎(CAG)、胃溃疡(GU)及十二指球部溃疡(DU)等四组,胃镜下观察粘膜病变、溃疡部位及性质,胃镜下取材,常规HE染色后观察组织学改变、Giemsa染色后观察Hp感染程度,统计分析Hp感染与肠化生、不典型增生等的关系.结果四组胃疾病中,Hp感染程度与肠化尘程度差异显著(P＜0.01),DU组的Hp感染率高于其它组(P＜0.01),CAG组的胃肠化生率最高(P＜0.05);Hp阳性标本中,CAG组的胃肠化及不典型增生最高(P＜0.01)Hp阴性标本中,CAG组的胃肠本的胃肠化和不典型增生发生率与Hp阴性标本的发生率有显著差异(P＜0.05).结论Hp与CAG并存时,癌前病变发生率最高,其次为GU;建议在临床上,抗Hp治疗和对CAG、GU的治疗同时进行,并内镜随访.     

幽门螺杆菌免疫分型在胃十二指肠疾病中的应用价值

目的 探讨幽门螺杆菌(Hp)细胞毒素在胃十二指肠疾病中的作用及HP免疫分型的临床应用价值。方法 采用免疫印迹法检测HP感染的胃十二指肠相关疾病的CagA和VacA抗体，并给所选病例三联HP根除方案治疗后，观察其根除率。结果 ①CagA和VacA的阳性率及CagA和VacA双阳性率正常对照组显著低干DU、GU、及GC组(P＜0．05)，而CagA和VacA双阴性率显著高于DU、GU及GC组(P＜0．05)；除DU组CagA阳性率及CagA和VacA的阳性率、CagA和VacA双阳性率显著高于UND组(P＜0．05)外，其余UND、DU、GU及GC组间CagA和VacA双阳性率及双阴性率均无显著性差异(P＞0．05)。②PU较UND的HP根除率高；HP根除成功的病例中CagA阳性率显著高于CagA阴性(P＜0．01)。结论 CagA和VacA与胃十二指肠疾病发生有密切关系，但不能作为判断HP导致特异性胃十二指肠疾病的单一指标。HP免疫分型可能无助干症状及疾病的诊断。同样的根除治疗方案，CagA阳性菌的HP根除率显著高于CagA阴性菌，CagA抗体可作为预测抗菌治疗疗效的有用的指标。     

幽门螺杆菌与胃液素关系的探讨

幽门螺杆菌(Hp)感染后血清胃液素增高是由于Hp感染使胃内pH增高所致。为探讨这一问题,我们于1991年5月起对此进行了观察,报告如下。 1 对象和方法 本组男性59例,女性9例。年龄最小23岁,最大97岁,平均42.3岁。胃镜诊断为十二指肠溃疡(DU)、胃溃疡(GU)、浅表性胃炎(CSG)、萎缩性胃炎(CAG)及疣状胃炎     

胃幽门螺杆菌感染与慢性胃炎镜下表现和消化性溃疡关系的探讨

本文报道用快速尿素酶试验法分析的1 717例慢性胃十二指肠疾病的胃幽门螺杆菌(Helicobacter pylori,HP)的感染情况。结果显示皱襞增粗型胃炎、充血/渗出型胃炎、扁平糜烂型胃炎、隆起糜烂型胃炎、胆汁反流型胃炎、出血型胃炎、皱襞萎缩型胃炎的HP感染率分别为70.00％,49.72％,48.86％,47.37％,41.94％,38.1％,34.48％,但无显著性差异。十二指肠溃疡HP感染率高达71.11％,显著高于胃溃疡的60.83％。男性病人HP感染率为47.8％,显著低于女性病人的63.7％。这表明慢性胃炎胃镜下形态学差异与幽门螺杆菌感染率高低无关,十二指肠球部溃疡与HP感染的关系较胃溃疡者更为密切,人群中HP感染存在性别差异。     

慢性胃炎和溃疡病患者幽门螺杆菌定量检测意义

为探讨 1 4 C-尿素酶呼气试验 ( 1 4 C- UBT)方法定量检测幽门螺杆菌 ( Hp)感染与慢性胃炎、消化性溃疡的关系 ,我们回顾性分析了 62例 Hp感染的患者 ,现将结果报告如下。资料与方法 :胃镜及病理组织学确诊为 Hp感染的 62例患者 ,男性 3 3例 ,女性 2 9例 ;年龄 18～ 79岁。其中慢性浅表性胃炎 ( CSG组 ) 16例 ,慢性萎缩性胃炎 ( CAG组 ) 14例 ,胃溃疡 ( GU组 ) 17例 ,十二指肠溃疡 ( DU组 ) 15例。方法 :对所有研究对象用 1 4 C- UBT方法进行 Hp感染的定量检测。清晨空腹以约 2 0 m l凉开水送服 0 .75微居里 (μci) 1 4 C-尿素胶…     

幽门螺杆菌感染相关慢性胃病患者血清MTL与胃泌素及胃蛋白酶原含量水平表达差异性

目的探讨幽门螺杆菌(Helicobacter pylori,H.pylori)感染相关慢性胃病患者胃黏膜肥大细胞数量、血浆胃动素及胃泌素水平差异性.方法选取2015-01/2017-01在绍兴市柯桥区齐贤医院和绍兴市中心医院接受治疗的H.pylori感染胃溃疡(gastric ulcer,GU)患者74例,H.pylori感染十二指肠溃疡(duodenal ulcer,DU)患者68例,H.pylori感染慢性萎缩性胃炎(chronic atrophic gastritis,CAG)患者76例,选取同一时间段内在绍兴市柯桥区齐贤医院和绍兴市中心医院接受体检的健康人80例作为对照组(无H.pylori感染),观察组4组对象肥大细胞(mast cell,MC)数量及血清内胃动素(motilin,MTL)、胃泌素、胃蛋白酶原含量状况.结果 CAG、GU、DU组MC数量均高于对照组(16.79个/HSP±2.64个/HSP),血清MTL含量均低于对照组(307.05ng/L±56.21 ng/L),差异有统计学意义(P0.05);血清G17在DU、GU、对照组及C A G组依次降低,GU组与DU组的胃蛋白酶原(pepsinogen,PG)Ⅰ、PGⅡ、PGⅠ/Ⅱ水平均高于对照组的(199.74mg/L±80.53mg/L)、(13.72mg/L±5.75mg/L)、(14.53±5.42),CAG组PGⅠ、PGⅠ/Ⅱ均低于对照组,差异均有统计学意义(P0.05).结论 H.pylori感染通过调节血清内MTL、胃泌素和胃蛋白酶原含量来促进GU、DU和CAG患者病情发展.     

幽门螺杆菌与慢性胃病的相关性

目的了解幽门螺杆菌(Hp)在慢性胃炎(CG)和消化性溃疡(PU)患者中的感染情况及其相关性.方法对1245例胃病患者的Hp感染情况及其相关性进行分析研究.其中男887例,女358例;年龄12岁～84岁,平均36.4岁;慢性浅表性胃炎(CSG)585例,慢性萎缩性胃炎(CAG)420例,胃溃疡(GU)152例,十二指肠溃疡(DU)43例,复合性溃疡(CPU)45例.结果 Hp阳性检出率为34.1%.CSG,CAG,GU,DU和CPU阳性检出率分别为30.8%,36%,34.9%,32.6%和55.6%.其中伴胆汁反流者Hp阳性检出率为25.7%,伴肠化者Hp阳性检出率为31.4%.结论 Hp的存在与否与CG和PU无明显相关性,其相关性还需要临床进一步研究确定.     

HP和CagA+HP与中国人慢性萎缩性胃炎、胃腺癌、消化性溃疡的关系

目的　探讨幽门螺旋杆菌(HP)及产细胞毒素型幽门螺旋杆菌(CagA     

胃幽门螺杆菌感染诊断与治疗中的问题

胃幽门螺杆菌感染诊断与治疗中的问题于中麟自Ｗａｒｒｅｎ及Ｍａｒｓｈａｌ从胃中分离出幽门螺杆菌（Ｈｐ）１０多年来，１９９０年悉尼世界消化会议后对其感染在急性胃炎、慢性活动性及慢性萎缩性胃炎、胃溃疡、十二指肠球部溃疡以致胃癌及非何杰金胃淋巴瘤等的病因上引...     

Clinical relevance of Helicobacter pylori CagA-positive strains: gastroduodenal peptic lesions marker.

OBJECTIVES: peptic ulcer is characterized by its recurrent nature, which necessitates maintenance treatment in most patients. But this natural history can be changed in patients with peptic ulcer associated to Helicobacter pylori, as shown by the low rates of recurrence and decreased hemorrhagic recidivism associated with this infection. Whether CagA or VacA strains are associated with a greater risk of peptic ulcer is controversial. This study was designed to examine endoscopic findings and their relation with H. pylori phenotype (CagA or VacA). METHODS: 106 selected dyspeptic patients underwent upper gastrointestinal tract endoscopic examination between September 1996 and May 1997 [69 with H. pylori (Hp) and 37 without this infection]. Endoscopic findings were classified as gastric ulcer (GU), duodenal ulcer (DU), gastric erosions (GE), duodenitis (Du), chronic gastritis (CG) and normal mucosa (NM). Hp phenotype was analyzed with a western blot test. RESULTS: 75% of H. pylori strains were CagA-positive and 54.2% were VacA-positive. 82.4% of the cases of DU were associated with a CagA+ phenotype, but the association was not statistically significant. Otherwise 100% of gastric ulcers were associated with CagA+ strains (p < 0.005). VacA phenotype was not associated with any particular endoscopic finding. Peptic ulcer (DU or GU) was also associated with the CagA+ phenotype (p < 0.05). CONCLUSIONS: the CagA+ H. pylori phenotype seems to be a peptic lesion marker, but was more frequently related with GU than with DU in our sample of Spanish patients.     

Anti-CagA and anti-VacA antibodies in Helicobacter pylori-infected patients with and without peptic ulcer disease in Serbia and Montenegro

BACKGROUND: The expression of two Helicobacter pylori proteins, CagA and VacA, is associated with more severe pathogenesis and clinical outcomes of the infection. However, this association varies among geographical regions and ethnic groups. We therefore evaluated CagA and VacA seroprevalence in H. pylori-positive dyspeptic patients in Serbia and Montenegro. METHODS: In 173 consecutive dyspeptic patients referred to endoscopy (67M, mean age 49 +/- 15, 76 smokers), immunoblot assay was used to detect serum antibodies against CagA and VacA. Presence of H. pylori infection was assessed using a rapid urease test (RUT), routine histology and serology (anti-IgG ELISA). Duodenal ulcer (DU) was diagnosed in 28, gastric ulcer (GU) in 3 and non-ulcer dyspepsia (NUD) in the remaining 142 patients. RESULTS: 129 (74.6%) patients were H. pylori-positive, 27 (96.4%) with DU, 3 (100%) with GU and 99 (69.7%) with NUD (P < 0.01); 121 (93.8%) patients carried anti-CagA antibodies and there was no difference between the DU and NUD groups. VacA antibodies were detected in sera of 50 (38.75%) and were more prevalent in patients with DU compared to the NUD group (P < 0.05). CONCLUSIONS: In Serbia and Montenegro there is high seroprevalence of CagA-positive H. pylori strains in dyspeptic patients with and without peptic ulcer, while VacA-positive strains are more closely related to peptic ulcer disease.     

消化性溃疡患者血中神经降压素水平及其在不同状态下的变化

本文对61例消化性溃疡患者空腹血浆神经降压素(Neurotensin,NT)水平作了测定,并就其在溃疡出血、幽门螺杆菌感染、奥美拉唑治疗后等多种状态下的进一步改变作了观察。结果表明溃疡患者NT水平显著低于正常(P<0.01),并发出血患者NT水平也明显低于正常(P<0.05),幽门螺杆菌感染、奥美拉唑治疗后血中NT水平未受显著影响(P>0.05)。     

消化性溃疡患者血管活性肠肽与十二指肠胃反流和幽门螺杆菌感染关系的研究

背景：消化性溃疡（PU）和十二指肠胃反流（DGR）患者的血浆血管活性肠肽（VIP）含量常高于正常水平，而幽门螺杆菌（H.pylori)感染可能参与PU的发病。目的：探讨PU患者的VIP和DGR和H.pylori感染的关系。方法：采用放射免疫测定（RIA）检测34例胃溃疡（GU）患者、42例十二指肠球部溃疡（DU）患者和30例健康人的血浆VIP含量；放射性核素^99mTc-EHIDA显像法测定DGR；双抗体夹心酶联免疫吸附测定（ELISA）检测血清H.pylori IgG抗体，Giemsa染色检测胃黏膜H.pylori。结果：GU组的血浆VIP含量显著高于DU组和正常对照组（P＜0．01）；DGR阳性率亦显著高于DU组（P＜0．05）。DGR阳性组的血浆VIP含量显著高于DGR阴性组（P＜0．01）。H.pyori阳性组的血浆VIP含量显著低于H.pylori阴性组（P＜0．05）。结论：PU患者血浆VIP含量升高可能是DGR发生的重要因素之一。     

Association of CagA and VacA presence with ulcer and non-ulcer dyspepsia in a Turkish population

AIM: The mostly known genotypic virulence features of H. pylori are cytotoxin associated gene A (cagA) and Vacuoliting cytotoxin gene A (VacA). We investigated the association of these major virulence factors with ulcer and non-ulcer dyspepsia in our region. METHODS: One hundred and forty two dyspeptic patients were studied (average age 44.8+/-15.9 years, range 15-87 years, 64 males and 78 females). Antral and corpus biopsies were taken for detecting and genotyping of H. pylori. 107 patients who were H. pylori positive by histological assessment were divided into three groups according to endoscopic findings: Duodenal ulcer (DU), gastric ulcer (GU) and non-ulcer dyspepsia (NUD). The polymerase chain reaction (PCR) was used to detect CagA and VacA genes of H. pylori using specific primers. RESULTS: H. pylori was isolated from 75.4 % (107/142) of the patients. Of the 107 patients, 66 (61.7 %) were cagA-positive and 82 (76.6 %) were VacA-positive. CagA gene was positively associated with DU and GU (P<0.01, P<0.02), but not with NUD (P>0.05). Although VacA positivity in ulcer patients was higher than that in NUD group, the difference was not statistically significant (P>0.05). CONCLUSION: There is a significantly positive association between CagA genes and DU and GU. The presence of VacA is not a predictive marker for DU, GU, and NUD in our patients.     

上海地区幽门螺杆菌cagA基因3’区和vacA基因的多态性分析及其临床意义

探讨上海地区人群中幽门螺杆菌（H．pylori）cagA基因3’区和vacA基因的多态性及其临床意义。方法：99株H．pylori菌株分离自17例慢性浅表性胃炎（CSG）、21例慢性萎缩性胃炎（CAG）、19例胃溃疡（GU）、23例十二指肠溃疡（DU）和19例胃癌（GC）患者。用聚合酶链反应（PCR）技术对H．pylori菌株的cagA基因3’区和vacA基因信号序列及中间区等位基因进行扩增和检测。结果：99株H．pylori菌株中84株（84．8％）cagA基因阳性,其3’区产物大小均约650bp,属A型。vacA基因信号序列仅检出sla型,见于从94．1％（16／17）的CSG、952％（20／21）的CAG、89．5％（17／19）的GU、87．00（20／23）的DU和89．5％（17／19）的GC患者中分离的菌株（P＝0．87）;中间区等位基因仅检出m2型,见于从70．6％（12／17）的CSG、71．4％（15／21）的CAG、63．20（12／19）的GU、73．9％（17／23）的DU和57．9％（11／19）的GC患者中分局的菌株（P＝0．72）。结论：上海地区人群中H．pylori菌株的cagA基因3’区相对保守;绝大多数vacA基因属sla／m2型。本研究结果不支持这些基因的多态性与H．pylori感染临床结局相关的观点。     

胃十二指肠疾病与血浆激素关系的初步研究

对64例胃十二指肠疾病患者(包括慢性残表性胃炎23例,萎缩性胃炎5例,胃溃疡10例,十二指肠溃疡14例及胃癌12例)的血浆生长抑索(SS)、血管活性肠肽(VIP)、胃动素(MTL)及血清胃泌素(Gas)的研究表明,血浆SS水平在胃十二指肠溃疡组及胃癌组均低于正常对照组(P<0.001);血浆VIP浓度在胃溃疡时升高最明显,与正常组及各疾病组比较均有显著性差异(P<0.01);十二指肠溃疡及胃癌组的血浆MTL含量均高于正常对照组(P<0.05);血清Gas水平在浅表性胃炎和萎缩性胃炎时均高于正常对照组(P<0.01).     

Anti‐CagA and anti‐VacA antibodies in Helicobacter pylori‐infected patients with and without peptic ulcer disease in Serbia and Montenegro

Background: The expression of two Helicobacter pylori proteins, CagA and VacA, is associated with more severe pathogenesis and clinical outcomes of the infection. However, this association varies among geographical regions and ethnic groups. We therefore evaluated CagA and VacA seroprevalence in H. pylori‐positive dyspeptic patients in Serbia and Montenegro. Methods: In 173 consecutive dyspeptic patients referred to endoscopy (67M, mean age 49?±?15, 76 smokers), immunoblot assay was used to detect serum antibodies against CagA and VacA. Presence of H. pylori infection was assessed using a rapid urease test (RUT), routine histology and serology (anti‐IgG ELISA). Duodenal ulcer (DU) was diagnosed in 28, gastric ulcer (GU) in 3 and non‐ulcer dyspepsia (NUD) in the remaining 142 patients. Results: 129 (74.6%) patients were H. pylori‐positive, 27 (96.4%) with DU, 3 (100%) with GU and 99 (69.7%) with NUD (P?P?Conclusions: In Serbia and Montenegro there is high seroprevalence of CagA‐positive H. pylori strains in dyspeptic patients with and without peptic ulcer, while VacA‐positive strains are more closely related to peptic ulcer disease.     

胃、十二指肠溃疡幽门螺杆菌感染及相关病因回顾性分析204例

目的:研究福建省立医院胃、十二指肠溃疡患者幽门螺杆菌(H.pylori)感染及其他致病因素对疾病发生的作用.方法:选取2003-2008年福建省立医院胃镜中心进行检查并确诊为消化性溃疡的患者204例,所有患者在胃镜检查前记录详细情况,包括H.pylori感染,胃黏膜活检尿素酶法(14C-UBT),吸烟史(每日>10支)...