幽门螺杆菌感染患者血及胃粘膜组胺含量的变化

目的：研究组胺和幽门螺杆菌（Ｈｐ）的关系。方法：采用组胺荧光测定法检测４７例Ｈｐ阳性和３０例Ｈｐ阴性的慢性胃炎和消化性溃疡患者全血及胃粘膜组胺含量。结果：Ｈｐ感染时胃粘膜组胺含量较Ｈｐ阴性者降低,其含量与慢性胃炎、溃疡病、胃炎活动性及其严重程度无关。Ｈｐ感染与非感染的血组胺含量无显著性差异。结论：Ｈｐ感染时胃粘膜组胺含量的减少可能是由于组胺释放增加所致,提示胃粘膜组胺贮存的异常可能是Ｈｐ感染的一个     

幽门螺杆菌感染与胃癌发生发展的关系

目的：研究幽门螺杆菌（Helicobacter pylori,Hp)感染在胃癌发生发展中过程中的作用,为临床预防和阻断胃癌发生发展提供理论依据。方法：内窥镜和病理活组织（H－E）诊断消化性溃疡129例、慢性胃炎315例、胃癌97例。所有病例的胃窦粘膜活组织经Warthin-Starry银染、粘膜涂片Gram染色、尿毒酶快速检测和聚合酶链反应（PCR）诊断幽门螺杆菌感染。其中慢性活动性胃炎20例、胃癌20例经免疫组织化学（LSAB）测定增殖细胞核抗原（P＜0．05）。（2）在轻度、中度、重度慢性胃炎病例中,幽门螺杆菌的检出率逐步增高,分别为40．5％、72．7％、86．7％（P＜0．05）。（3）消化性溃疡、慢性胃炎、胃癌的幽门螺杆菌检出率分别为70．5％、60．9％、57．7％,无显著性差异（P＞0．05）。（4）胃癌组p53蛋白阳性率为80．0％, 活动性胃炎组为阴性（P＜0．05）。（5）活动性胃炎中PCNA阳性表达率为85．0％,胃癌组PCNA阳性率高达95．0％。结论：幽门螺杆菌感染可能是引起慢性胃炎、消化性溃疡、胃癌的主要原因之一。     

幽门螺杆菌感染对儿童健康的影响

幽门螺杆菌(Helicobacter pylori,Hp)是近20年来医学界研究的一个热点,研究结果已证明：Hp感染是慢性胃炎和消化性溃疡的主要致病因素,并且与胃癌及胃淋巴瘤的发生密切相关,WHO国际癌症研究机构(IARC)已正式将Hp纳入第一类致癌危险因素。最近的研究资料还表明,儿童期是人的一生中     

幽门螺杆菌的生物学特性及其感染的胃粘膜病理学特点

幽门螺杆菌 (ｈｅｌｉｃｏｂａｃｔｅｒｐｙｌｏｒｉ,Ｈｐ)是在胃内生长的一种常见细菌 ,目前认为与慢性胃炎、消化性溃疡、胃癌、胃粘膜相关淋巴瘤等疾病均有关系。1　Ｈｐ的生物学特性幽门螺杆菌呈“Ｓ”形或弧形 ,革兰染色阴性。新鲜培养物湿涂片在相差显微镜下可见到典型形态和活泼的动力。电镜下菌体呈螺旋形弯曲 ,长 1 5～ 5 0 μｍ ,宽 0 3～ 1 0 μｍ。表面光滑 ,末端钝圆 ,一端具有 2～ 6条带鞘鞭毛 ,长度稍长于菌体 ,每一鞭毛基部与菌体细胞膜上直径约 50ｎｍ的圆球状结构相连 ,内侧有一电子密度降低区域。Ｈｐ是一种专性微需…     

慢性胃炎、消化性溃疡与幽门螺杆菌感染的关系

目的：探讨幽门螺杆菌（Hp）与慢性胃炎、消化性溃疡的关系。方法：胃镜检查确诊的494例慢性胃炎患者、160例消化性溃疡伴慢性胃炎患者分别给予胃黏膜组织活检及快速尿素酶试验检查幽门螺杆菌感染情况,分析炎性反应情况与幽门螺杆菌感染的关系,消化性溃伴慢性胃炎Hp感染的阳性率。结果：Hp感染阳性率,慢性充血渗出性胃炎达72．7％、隆起糜烂性胃炎达76％、反流型胃炎达88．2％、萎缩性胃炎达75％,十二指肠溃疡（DU ）和胃溃疡（G U ）的H p检出阳性率分别是82．1％和86．5％。结论：几种常见的慢性胃炎、消化性溃疡都伴有不同程度的幽门螺杆菌感染,消化性溃疡均伴有慢性胃炎。     

幽门螺杆菌感染与小儿胃十二指肠疾病的关系

目的　研究幽门螺杆菌（ Ｈｐ） 感染与小儿慢性胃炎、消化性溃疡病之间的关系,探讨 Ｈｐ的致病性。方法　我们对经胃镜检查证实的２４５ 例非溃疡性消化不良与６３ 例消化性溃疡患儿胃镜取材做 Ｈｐ 培养、快速尿素酶试验、病理学检查及血清 Ｈｐ Ｉｇ Ｇ 抗体测定。结果　在５６ 例十二指肠溃疡中 Ｈｐ 感染率为８３ ．９３ ％ ,７ 例胃溃疡为２８ ．５７ ％ ,２２４ 例慢性浅表性胃炎为４９ ．１１ ％ ,１１ 例慢性萎缩性胃炎为９０ ．０１ ％ ,其中３３ 例慢性活动性胃炎为９６ ．９７ ％ ,轻度胃炎为３２ ．７０ ％ ,中度胃炎为８３ ．７８ ％ ,而１０ 例正常胃粘膜者无１ 例发现 Ｈｐ 。结论　 Ｈｐ 感染与小儿胃十二指肠疾病密切相关,尤其是活动性胃炎和十二指肠溃疡。     

幽门螺杆菌与慢性胃炎、消化性溃疡的关系

对８６例患者进行胃镜检查及胃粘膜活检，同时用尿素酶试验进行幽门螺杆菌的检测，结果幽门螺杆菌的检出率为５５．８１％，幽门螺杆菌感染与胃炎的严重程度呈正相关，与消化性溃疡的分期不具正相关性。认为在治疗慢性胃炎患者时有必要加用杀菌药，幽门螺杆菌感染不是消化性溃疡的直接致病因子     

幽门螺杆菌感染与上消化道疾病发生的相关性研究

目的 探讨胃黏膜幽门螺杆茵(Hp)感染与上消化道疾病发生的相关性。方法应用快速尿素酶试验对26075例接受纤维胃镜检查的患者作胃黏膜Hp现症感染检测。结果 上消化道疾病Hp现症感染检出率达94．95％，其中以十二指肠溃疡检出率最高(99．84％)；其次为慢性胃炎(94．71％)和胃溃疡(92．36％)；胃癌阳性率也达76．95％。结论 Hp感染与消化性溃疡及慢性胃炎关系极为密切。与胃癌之间也可能存在因果关系。     

胃非幽门螺杆菌样螺杆菌感染

近年来大量研究证明胃内幽门螺杆菌(Helicoba-cter pylori,HP)感染是慢性胃炎,并很可能是消化性溃疡的重要病因。1987年Dent发现另一种比HP体积大的螺杆菌,以后世界各地亦偶有报告并确定为人胃螺杆菌(Gastrospirillum hominis,GH)。作者近来发现8例感染该菌的病例。     

慢性胃炎、消化性溃疡患者幽门螺旋杆菌的分离鉴定和耐药性分析

目的通过对慢性胃炎和消化性溃疡患者幽门螺旋杆菌的分离培养和耐药性分析，为幽门螺杆菌感染的根除性治疗提供依据。方法经胃镜活检快速尿素酶阳性的195例慢性胃病患者，取病变黏膜组织，常规方法培养鉴定幽门螺杆菌，采用平皿稀释法对分离菌株进行药物敏感试验。结果195例慢性胃炎及消化性溃疡患者中，幽门螺杆菌的分离率高达79．5％。药敏显示，此次分离的幽门螺杆菌对甲硝唑和替硝唑呈现不同程度的耐药，对阿莫西林、克拉霉素敏感。结论幽门螺杆菌是慢性胃炎和消化性溃疡发病的首要因素，阿莫西林、克拉霉素仍然是根除治疗首选药物。     

幽门螺杆菌与慢性浅表性胃炎患者胃液中sIgA的关系

探讨分泌性免疫球蛋白Ａ在幽门螺杆菌导致的慢性浅表性胃炎中和。方法选取慢性浅表性胃炎患者６３例,按组织学分型分为轻、中、重度胃炎;按有无中性粒细胞的出现分为活动性和非活动性胃炎,采用放射免疫法测定ｓＩｇＡ,ＨＰ检测采用尿素酶试验及Ｗａｒｔｈｉｎ－Ｓｔａｒｒｙ染色。结论ＨＰ是慢性浅表性胃炎的重要致病因素,其致病机制与ｓＩｇＡ保护作用有密切关系。     

Asymptomatic Helicobacter pylori infection and its relation to chronic gastritis

Ninety-two asymptomafic subjects were investigated to determine whether they were in-fected with Helicobacter pylori(HP)by means of fiber gastroscopy, urease test andWarthin-Starry silver stain.As a result of this work,49 subjects with HP infection were found.Under gastroscope,24 of 92 subjects had normal gastric mucosa 45 suffered frompiebaldism-like congestion of the gastric mucosa and 23 mucosal erosion,but the differencesamong the detectable rotes of them had no statistical significance(P>0.05).Forty-six of the subjects with HP infection were seen in the 67 patients with gastritis and only 3 in the subjectswith normal mucosa.The positive rates of HP infection in the patients with moderate and serfous gastritis were significant highly(P<0.01),as compared with that in mild gastritis.It could besuggested that HP infection and the gastritis associated with it may universally exist in“healthy persons”without symptom.     

Dominant cagA/vacA genotypes and coinfection frequency of H. pylori in peptic ulcer or chronic gastritis patients in Zhejiang Province and correlations among different genotypes, coinfection and severity of the diseases

Background Almost half of the world’s population suffer from the Helicobacter pylori (H. pylori) infection, but only some individuals develop gastric diseases with clinical symptoms. One reason for the phenomenon may be the different pathogenicity of infected H. pylori strains. The presence of cytotoxin-associated gene A (cagA) and expression of vacuolating cytotoxin activity encoded by vacuolating cytotoxin gene A (vacA) are considered the two major virulent markers of H. pylori. The aim of this study was to detect dominant cagA/vacA genotypes and coinfection frequency of H. pylori in patients with peptic ulceration (PU) or chronic gastritis (CG), and to determine correlations among different cagA/vacA genotypes, coinfection and severity of the diseases. Methods For each of 139 patients in Zhejiang Province who had been diagnosed as PU or CG based on clinical symptoms and gastroscopy, two gastric biopsy specimens (one from antrum and the other from corpus) for H. pylori isolation were taken by two different disinfected biopsy forceps. One hundred and fifty-six H. pylori strains were isolated from both the antrum and corpus biopsy specimens of 78 patients (36 PU and 42 CG). PCRs were performed to detect cagA genes, and signal (s) and middle (m) regions of vacA genes in the H. pylori isolates. The amplified fragments of dominant vacA gene s and m subtypes from representative H. pylori isolates were sequenced after TA cloning. Dominant cagA/vacA genotypes of the H. pylori isolates, coinfection frequency and correlations among the different genotypes, coinfection and severity of the diseases were determined.Results Of the H. pylori strains isolated from the antrum specimens, 96.2% were cagA gene positive, as were 97.4% of the H. pylori strains isolated from the corpus specimens. Only one s region subtype (s1a) and four m region subtypes m1, m2, m1b and m1b-m2 of vacA gene were found. The proportions of vacA gene subtypes s1a/m1, s1a/m2, s1a/m1b and s1a/m1b-m2 in the 83 strains isolated from the antrum specimens were 7.2%, 61.5%, 30.1% and 1.2%, respectively, while those in the other 84 strains isolated from the corpus specimens were 9.5%, 58.3%, 28.6% and 3.6%, respectively. s1a/m2 (58.3% vs 30.1%, χ2=13.47, P&lt;0.01) and then s1a/m1b (28.6% vs 9.5 %, χ2=9.88, P&lt;0.01) were the dominant vacA gene subtypes in the H. pylori isolates. The dominant H. pylori genotype was cagA+s1a/m2 (59.0% from antrum specimens and 57.1% from corpus specimens), and followed by cagA+s1a/m1b (28.9% from antrum specimens and 27.4% from corpus specimens). Sixteen of 78 patients (20.5%) were infected with two or three H. pylori strains with different genotypes. However, no statistically significant differences among cagA occurrence, the different vacA subtypes and PU or CG could be found (each P&gt;0.05). Similarities of the nucleotide sequences from vacA gene s region PCR products of six isolates and from vacA gene m region PCR products of four isolates were 93.2% to 98.3% and 93.8% to 97.6%, respectively, compared to the reported corresponding sequences.Conclusions The dominant genotypes of H. pylori in PU or CG patients in Zhejiang area may be cagA+ s1a/m2 and cagA+ s1a/m1b. Numerous coinfections with different H. pylori strains in PU or CG patients indicate diversity of the infected H. pylori origins. s and m regions of vacA gene from different H. pylori isolates show high nucleotide sequence similarities. cagA gene positive rate, different vacA gene subtypes and coinfection with different H. pylori strains are not closely associated with severity of the diseases.     

十二指肠溃疡患者幽门螺杆菌感染与胃窦粘膜炎症反应和炎症介质含量的分析

目的 探讨十二指肠溃疡患者幽门螺杆菌 (Hp)感染与胃窦粘膜炎症反应和炎症介质含量的关系。 方法 取70例十二指肠溃疡患者胃窦粘膜组织作炎症活动性和炎症程度分级、Hp W -S染色和炎症介质含量测定。结果 十二指肠溃疡患者胃窦粘膜炎症反应Hp阳性者比阴性者严重 ;且十二指肠溃疡患者胃窦粘膜炎症活动性和炎症程度分级与Hp感染分级呈正相关。Hp阳性者胃窦粘膜内炎症介质含量比Hp阴性者高 ,且炎症介质含量随着Hp感染程度和胃窦炎症反应的加重而升高。结论 炎症介质在Hp相关性胃窦炎和十二指肠溃疡的发生中起重要的纽带作用     

无症状幽门螺杆菌感染及其与慢性胃炎的关系

对92例无症状者幽门螺杆菌(HP)感染情况进行了调查,67例胃炎患者中,有46例(68.7％)检出HP,25例组织学正常者仅3例有HP感染。中、重度炎症的HP阳性率与轻度炎症相比差异非常显著(P<0.01)。HP感染及其相关的胃炎可普遍隐藏于无症状健康人群中。     

奥美拉唑治疗消化性溃疡及伴发慢性胃炎、幽门螺杆菌感染的近期疗效观察

本文报导奥美拉唑(Ome)治疗消化性溃疡及伴发慢性胃炎(CG)、幽门螺杆菌(HP)感染80例近期疗效的临床研究结果。以 Ome 20mg/日与法莫替丁(Fam)40mg/日分组治疗四周作对比研究,发现 Ome 不仅对十二指肠溃疡(Du)、胃溃疡(Gu)的愈合率(86.8%、70.4%)优于 Fam(P<0.05),而且对伴发的慢性胃炎、幽门螺杆菌感染的疗效也明显优于 Fam。Ome 对 Du、Gu伴发 CG 总有效率分别为81.1%、85.2%,高于 Fam(36.4%、29.4%)P<0.01;Ome 对 Du、Gu 伴发的 HP 感染总有效率分别为83.0%、81.5%,而 Fam仅分别为21.2%、17.7%,差异非常显著(P<0.01)。上述结果提示,奥美拉唑不仅有卓越的愈合溃疡作用,对溃疡伴发的慢性胃炎、幽门螺杆菌感染亦有显著疗效。     

西藏自治区藏族人群幽门螺杆菌毒力菌株分型与慢性胃炎及消化性溃疡的相关性研究

目的 研究西藏自治区藏族人群中幽门螺杆菌不同毒力菌株的感染情况,以及不同毒力菌株分型与慢性胃炎、肠化生、消化性溃疡等上消化道疾病的相关性。方法 收集2019年4月至2020年12月拉萨市人民医院消化科收治的幽门螺杆菌感染患者的性别、年龄、职业、血清幽门螺杆菌抗体分型检测和胃镜及病理检查结果。分析不同毒素分型与患者临床病理特征的相关性。结果 西藏自治区藏族人群感染的幽门螺杆菌以高毒力的Ⅰ型菌株[细胞毒相关基因A蛋白(cytotoxin associated protein A,CagA)和/或空泡毒素A(vacuolar toxin A,VacA)抗体阳性]为主,占56.8%,Ⅱ型菌株(CagA和VacA抗体均阴性)的比例为43.2%。CagA和VacA抗体阳性人群与CagA和VacA抗体阴性人群在慢性非萎缩性胃炎(49.7% vs 44.2%)、萎缩性胃炎和肠化生(17.1% vs 22.9%)、消化性溃疡(33.2% vs 32.9%)等上消化道疾病的患病率间差异均无统计学意义(P>0.05)。根据年龄进行分组,40岁以上患者的慢性萎缩性胃炎和肠化生患病率更高(62% vs 44%,P=0.002);而小于40岁的患者消化性溃疡的患病率更高(40% vs 25%,P<0.001)。根据职业进行分组,非农牧民消化性溃疡的患病率高于农牧民(39% vs 30%,χ²=5.342,P=0.027);而慢性非萎缩性胃炎、萎缩性胃炎和肠化生的患病率在不同职业人群中差异无统计学意义(P>0.05)。结论 西藏自治区藏族人群感染的幽门螺杆菌以高毒力的Ⅰ型菌株为主,但不同毒力菌株感染患者在慢性非萎缩性胃炎、萎缩性胃炎和肠化生、消化性溃疡等上消化道疾病的患病率间差异无统计学意义。在幽门螺杆菌感染患者中,随着年龄增长,慢性萎缩性胃炎和肠化生患病率升高,而年轻人群及非农牧民人群消化性溃疡患病率更高。     

幽门螺旋杆菌感染与胃癌及胃黏膜疾病的相关分析

目的探讨幽门螺旋杆菌（Hp）感染与胃癌及胃黏膜疾病发生的关系;方法经胃镜及病理检查确诊的胃癌患者47例作为观察组,经胃镜及病理检查确诊为慢性浅表性胃炎、慢性萎缩性胃炎、胃溃疡、消化性溃疡共161例患者作为对照组。两组患者进行14C尿素呼气试验检测Hp,同时观察组47例胃癌患者胃镜分型按照Borrmann分类为Ⅰ、Ⅱ、Ⅲ、Ⅳ型,组织学按照Lauren分为肠型和弥漫型,按照位置分为贲门型和非贲门型,观察不同部位和分类中的Hp感染情况。结果慢性浅表性胃炎的Hp感染阳性率最低,胃溃疡Hp感染阳性率最高,慢性萎缩性胃炎Hp感染阳性率第二,四组病人经统计学分析,χ2=6.988,P〈0.05,存在显著性差异;胃癌Hp感染中非贲门与贲门感染相比较差异显著（72.7%vs 42.8%）。结论慢性萎缩性胃炎、胃癌的发生与Hp感染有一定的关联,非贲门位置的胃癌的发生率要显著高于贲门位置。