胃癌患者血清sICAM-1、sVCAM-1和sFas水平的研究

目的:为了解胃癌患者血清中可溶性细胞间粘附因子-1(sICAM.1)、血管间粘附因子.1(sVCAM-1)和Fas受体(sFas)的水平变化 方法:用双抗体夹心ELISA法检测了32例胃癌患者及25名正常健康人血清sICAM-1、sVCAM-1和sFas水平 结果:发现胃癌患者sICAM-1和sVCAM-1水平明显高于正常健康人(289.25±32.69ng/ml比190.44±35.92ng/ml:1430.88±421.71ng/ml比727.24±157.68ng/ml),差异显著,且与临床分期有关。而胃癌患者血清sFas水平则明显低于正常健康人(8.55±2.45ng/ml比12.33±4.02ng/ml),差异显著(P<0.01).但与临床分期无关 结论:sICAM-1 sVCAM-1在胃癌的发生发展中起着重要作用,患者血清水平的测定,对病情、病期、预后的判断及治疗效果的观察均具有重要意义 而胃癌细胞与其他大部分肿瘤细胞不同.对sFas调节作用可能并不敏感。     

幽门螺杆菌感染患者血清可溶性黏附分子1(sICAM-1)检测研究

目的研究慢性胃病患者幽门螺杆菌(Helicobacter pylori,Hp)感染与血清可溶性黏附分子1(Soluble Intercellular Adhesion molecule-1,sICAM-1)水平关系。方法对205例慢性胃病患者进行了血清sICAM-1水平检测,并同时进行RUT、组织MB染色、Hp抗体和~(14)C-UBT四项方法检测Hp感染。结果胃粘膜Hp阳性组患者血清sICAM-1为889.43±22.52ng/m1,明显高于Hp阴性组患者747.07±30.45ng/ml(P<0.05);胃粘膜Hp感染菌量+、++、+++三组患者sICM-1水平分别为841.68±72.36ng/ml、905.43±37.59ng/ml和1012.54±49.34ng/ml,三组间差异显著(P<0.05);慢性胃炎、消化性溃疡患者血清sICAM-1水平明显高于正常对照组(P<0.05).结论胃粘膜Hp感染患者血清sICAM-1水平明显升高,血清sICAM-1水平可作为判断Hp感染新的感染免疫活动指标。     

Helicobacter pylori infection in Icelandic children

Objective: The prevalence of Helicobacter pylori (HP) infection is decreasing in the western world. The seroprevalence among 25–50-year-old Icelandic adults was recently shown to be 30–40%. Information on the seroprevalence in Nordic children is limited. We aimed at ascertaining the infection prevalence among healthy Icelandic children.

Methods: The infection status in stored frozen blood samples from two cross-sectional studies on the health of 7–9-year-old children (n?=?125) and 16–18-year-old adolescents (n?=?80) was determined by enzyme-linked immunosorbent assay (ELISA). Information on family demographics and GI symptoms was obtained by standardized questionnaires.

Results: Overall, 3.4% (7/205) of the children were infected with H. pylori. The prevalence was 2.6% (5/190), missing data n?=?3, among children with both parents born in a low prevalence country compared to 17% (2/12) among those with at least one parent born in a high prevalence area (p?=?.026). When at least one parent was born in a high prevalence country, the odds ratio for being H. pylori seropositive was 2.2 (95% CI, 1.02–54.67), when adjusted for the educational status of the mother. There was no significant association between H. pylori infection and gastrointestinal symptoms.

Conclusion: Prevalence of H. pylori infection in Iceland has become very low, suggesting a great reduction in transmission from older generations. There was an association between H. pylori infection and origin from high prevalence areas but not with gastrointestinal symptoms. The results mirror recent studies of children of Scandinavian ancestry.     

Helicobacter pylori infection in children

Helicobacter pylori was sought prospectively by culture of antral biopsy, histology and serology (IgG and IgA) in 440 consecutive endoscopies on children to determine the prevalence, clinical presentation and histological features of H. pylori infection in our population. Twenty-eight patients had H. pylori (8% overall). The mean age of infected patients was significantly higher than that of non-infected patients (P less than 0.0001). No patient under 5 years of age had H. pylori isolated. Overall, there was no significant difference in clinical presentation between those with and those without H. pylori infection, but 23% of patients 5 and 26 years of age who presented with abdominal pain as the indication for their endoscopy had H. pylori isolated. Macroscopic changes ranged from no abnormality to frank ulceration, but the typical antral mamilliform changes were 100% predictive of infection. Fifty-eight per cent of patients with duodenal ulcers, but only 17% with gastric ulcers had H. pylori infection. Histological gastritis was present in 144 patients (including all H. pylori positive patients). None of the patients with another definable cause for gastritis had H. pylori isolated. In conclusion, H. pylori is an important cause of primary gastritis in our population, occurring in children over 5 years of age. Culture of an antral biopsy should be performed in children over this age undergoing endoscopy for the investigation of abdominal pain and, more particularly, in those with peptic ulceration.     

ICAM-1,VCAM-1在Hp阳性良性胃粘膜病变及胃癌中的表达

目的观察ICAM-1及VCAM-1在Hp阳性良性胃粘膜病变及胃癌组织中的表达并探讨其可能临床和病理意义.方法良性病变胃粘膜33例(慢性胃炎患者胃粘膜23例,胃癌癌旁良性病变胃粘膜10例),胃癌组织10例,经冰冻切片SP免疫组化染色后,结果进行半定量分析.结果 Hp阳性的良性病变胃粘膜中粘液细胞表达ICAM-1者为42.4%(14/33),表达VCAM-1者为27.3%(9/33);基质表达ICAM-1者为84.8%(28/33),表达VCAM-1者为81.8%(27/33).胃癌癌细胞中这两种细胞粘附分子阳性表达的例数及积分均高于它们在良性病变胃粘膜粘液细胞中的表达(P＜0.05或P＜0.01);胃癌组织中这两种粘附因子阳性表达的积分高于它们在良性病变胃粘膜基质中的表达(P＜0.05);癌旁良性病变胃粘膜粘液细胞中VCAM-1阳性表达积分高于其在慢性胃炎患者胃粘膜中的表达.结论胃癌时ICAM-1和VCAM-1表达增高,但可能不足以产生针对肿瘤细胞的宿主免疫监视,反而有利于提高这些细胞的运动能力.     

HLA-DQB1 locus and gastric cancer in Helicobacter pylori infection

BACKGROUND AND AIMS: It has been suggested that the incidence of digestive diseases associated with Helicobacter pylori is influenced by the strain diversity of H. pylori, factors involving the host or environment, and the duration of infection. The authors have previously reported that human leukocyte antigen (HLA)-DQB1*0401 plays an important role in the development of atrophic gastritis in H. pylori infected patients. The aim of the present study was to investigate the relationship between HLA-DQB1 genotype and cancer development. METHODS: HLA-DQB1 genotyping was performed by the PCR-RFLP method on 122 H. pylori-infected non-ulcer dyspepsia (NUD) patients, 53 gastric cancer patients and 28 uninfected controls. To reliably estimate the grade of atrophic gastritis, histological evaluation was performed. RESULTS: The allele frequency of DQB1*0401 was significantly higher in intestinal type cancer patients compared with age- and sex-matched H. pylori-infected NUD patients. There was no significant difference in the mean atrophic scores of the biopsy samples from the lesser curvature of the mid-corpus between these groups. CONCLUSIONS: HLA-DQB1*0401 is a useful marker for determining susceptibility to intestinal type gastric cancer.     

幽门螺杆菌感染与儿童支气管哮喘发病的相关性研究

目的探讨幽门螺杆菌(Helicobacter pylori,H.pylori)感染与儿童支气管哮喘发病的关系。方法采用14C呼气试验检测H.pylori感染,比较H.pylori感染儿童与正常儿童之间的哮喘发病率和病情发展情况。结果 H.pylori感染儿童哮喘发病率较正常儿童低(6.33%vs 12.66%,P0.05);H.pylori阳性的哮喘儿童较H.pylori阴性的哮喘儿童拥有更长的缓解期(P0.05)。结论H.pylori感染与儿童哮喘的发病和复发呈负相关,具体机制有待进一步研究。     

Helicobacter pylori infection among Japanese children

BACKGROUND: In Japan, there are few reports describing Helicobacter pylori infection among young children. The aim of the present study was to identify risk factors associated with H. pylori in school-aged children. METHODS: Subjects were first-grade students of three elementary schools (n = 310) and second-grade students of a junior high school (n = 300). Personal information, such as student's medical history, parent's history, family size, sibshipsize and household pets, was collected from guardians using a questionnaire. Saliva samples and personal information were collected twice (1995 and 1996). By using the saliva samples, H. pylori IgG antibody was measured using a commercial kit. To analyze the risk factors for H. pylori infection, sex- and age-adjusted odds ratios (OR) were calculated using a multiple logistic model. RESULTS: Among the children, factors related to Helicobacter antibody in saliva included spending a longer period of time in a nursery school or kindergarten (OR = 4.0) and a maternal history of stomach disease (OR = 2.8). Birth order (OR = 2.2), sleeping situation (OR = 2.3) and sibshipsize (OR = 1.6) were not factors that were significantly related to Helicobacter antibody in the saliva. Chewing food for the infant, family size, rooms in the household, sharing a bedroom during childhood, pets, a past history and a paternal history were not related to positivity. CONCLUSIONS: The results indicate that transmission is person-to-person, mainly through close contact with other children and intrafamilial infection. Helicobacter pylori infection seems to occur frequently early in life, probably before 6 years of age.     

幽门螺杆菌长期感染蒙古沙土鼠腺胃模型的建立及评价

目的 建立幽门螺杆菌（Helicobacter pylori,Hp）长期感染蒙古沙土鼠腺胃模型,验证该模型出现的病理改变及腺胃肿瘤的发生情况。方法 采用国际标准菌株NCTC 11637灌喂蒙古沙土鼠,建立HP长期感染蒙古沙土鼠腺胃模型。结果 成功建立了HP长期感染蒙古沙土鼠腺胃模型,其胃黏膜的组织学变化显示,HP感染可致正常胃黏膜→慢性胃炎→萎缩→肠化生→异型增生的发展过程,Hp NCTC 11637定植于蒙古沙土鼠腺胃65财哩,可引起胃黏膜出现严重的萎缩、肠化生及不典型增生等胃癌前状态,暂未发现早期癌。结论 Hp NCTC 11637易长期定植于蒙古沙土鼠腺胃,模型的稳定性及重复性极佳,且与Hp感染人胃黏膜后出现的各种病理变化极为相似。     

Helicobacter pylori infection and gastroesophageal reflux in children

Some studies suggest that Helicobacter pylori (H. pylori) infection would be a protective factor for the gastroesophageal reflux. The aim of this study was to explore this fact. A group of 72 children, admitted in a pediatric gastroenterology regional center in Northeast Romania, diagnosed with gastroesophageal reflux by 24‐hour continuous esophageal pH monitoring (results were interpreted using the Boix‐Ochoa score), underwent upper endoscopy with gastric biopsy to detect the presence of H. pylori by the rapid urease testing and for bacteriological and histologic examination. 19 children (26.39%) had H. pylori infection, while 53 (73.61%) did not. The grade of esophagitis was classified according to the Los Angeles classification system. Out of 47 children with esophagitis A, 16 (34.04%) had H. pylori infection, while out of the 25 children with esophagitis B, only 3 (12%) had H. pylori infection, with statistic significance (χ² = 54.69, P << 0.05, 95% confidence interval [CI]). Regarding the value of the Boix‐Ochoa score, it appears that the presence of the H. pylori determines lower pH‐metry scores (F = 8.13, P = 0.0015, 95% CI). The presence of the H. pylori was not an important factor in the gastroesophageal reflux. On the other hand its relationship with esophagitis appears to be inverse ratio. The fact that the H. pylori presence is statistically greater in the grade A esophagitis could confirm the hypothesis that the bacteria would slow down the development of the esophagitis.     

Transmission of Helicobacter pylori infection in families of preschool-aged children from Minas Gerais, Brazil

We evaluated the role of the family in the transmission of Helicobacter pylori infection in preschool-aged children from a rural district in the State of Minas Gerais, Brazil. Sixty-six families (66 index children, 63 mothers, 60 fathers and 134 siblings), defined as at least one parent living in the same household with at least one offspring up to 8 years old, were studied. Odds ratios (OR) and 95% confidence intervals (CI) were estimated by logistic regression controlling for age, gender, number of children in household and H. pylori status of the father, mother and siblings. The prevalence of the infection was 69.7% (469 of 673) and it increased with age (P < 0.001). Positive mothers were a strong and independent risk factor for infection (OR 22.70; 95% CI 2.31-223.21). Positive siblings were also positively associated with infection (OR 1.81; 95% CI 1.01-3.30).     

应用基因分型技术研究幽门螺杆菌感染的家庭聚集现象

目的：探讨本地区Hp感染的可能途径。方法：采用聚合酶链反应－限制性片段长度多态性（PCR－RFLP）方法分析60个家庭133名伴有上消化道症状的儿童及其一级亲属唾液和胃粘膜中的Hp尿素酶(UreC)基因，通过比较两种限制性核内切酶Hha I与Alu I酶切复合类型（RFLP－C）评价儿童获得Hp的可能途径。结果：78个Hp阳性的家庭成员共确定22个Hp酶 型。25．0％（7／28）Hp阳性儿童从唾液中扩增出Hp，33．3％（10／30）Hp阳性的亲属从唾液中扩增出Hp,唾液与相应胃窦Hp的RFLP－C类型一致。83．9％（26／31）先证感染的Hp与其亲属感染的Hp与其亲属感染的Hp类型相同。结论：PCR－RFLP分析Hp Ure C基因的酶切类型分辨率较高，直接扩增样本Hp方法简便，可应用于Hp的流行病学研究。Hp感染患唾液与胃粘膜中扩增出的Hp Ure C基因RFLP－C酶切类型完全一致，同一家庭内感染的Hp Ure C基因RFLP类型高相符，提示家庭内成员的口一口传播可能是儿童期获得Hp的重要模式。     

儿童幽门螺杆菌感染情况及其与上消化道症状的关系

[目的]探讨儿童幽门螺杆菌（Hp）感染与上消化道症状及胃黏膜病变的关系.[方法]纳入300例有上消化道症状患儿,Hp感染情况采用13C或尿素呼气试验或血清Hp抗体检查,204例患儿接受胃镜检查.[结果]①Hp阳性率为34.67％（103/300）,男女患者Hp阳性率差异无统计学意义（P＞0.05）,3～6岁、7～10岁及11～14岁年龄组Hp阳性率依次升高,组间差异有统计学意义（P＜0.05）;②胃镜检查显示39.21％患儿（80/204）有胃黏膜病变,Hp阳性者胃黏膜病变比例高于Hp阴性者（P＜0.05）;③Hp阴性者胃黏膜病变以轻-中度为主,而Hp阳性者胃黏膜病变以中-重度为主,两者病变严重程度的差异有统计学意义（P＜0.05）.[结论]有上消化道症状儿童Hp阳性率较高,且随年龄增长而增高,Hp感染与胃黏膜病变发生及严重程度相关.     

3368例武汉市儿童幽门螺杆菌感染的临床分析

目的了解武汉市有消化道症状的儿童幽门螺杆菌感染状况、分布特征及影响因素。方法选取我院及武汉市医院2010年8月～2011年7月3 368例有消化道症状的儿童,以性别和年龄进行分组,通过14 C-尿素呼气试验检测幽门螺杆菌感染情况,并对其结果进行统计学分析,同时对这些儿童的生活方式进行问卷调查分析。结果 3 368例受检儿童H.pylori总感染率为29.2%,其中男女儿童H.pylori感染阳性率分别为29.2%和29.1%,男女儿童H.pylori感染阳性率差异无统计学意义(P>0.05);学龄前、学龄期及青春期儿童H.pylori感染阳性率分别为27.1%、28.7%和39.1%,学龄前期与学龄期H.pylori感染阳性率差异无统计学意义(P>0.05),学龄前期、学龄期与青春期H.pylori感染阳性率差异有统计学意义(P<0.01);年龄与H.pylori感染阳性率相关(P=0.001);同年龄组男女儿童H.pylori感染阳性率差异无统计学意义(P>0.05);父母幽门螺杆菌阳性患儿幽门螺杆菌阳性率57.5%。结论武汉市有消化道症状的儿童幽门螺杆菌感染率高,随年龄增长感染率递增,但与性别无关,父母幽门螺杆菌阳性患儿幽门螺杆菌阳性率高,年龄、家庭聚集性、父母H.pylori感染与儿童H.pylori感染相关。     

Nucleotide-binding oligomerization domain 1 and Helicobacter pylori infection: A review

Nucleotide-binding oligomerization domain 1(NOD1) is an intracellular innate immune sensor for small molecules derived from bacterial cell components. NOD1 activation by its ligands leads to robust production of pro-inflammatory cytokines and chemokines by innate immune cells, thereby mediating mucosal host defense systems against microbes. Chronic gastric infection due to Helicobacter pylori(H. pylori) causes various upper gastrointestinal diseases, including atrophic gastritis, peptic ulcers, and gastric cancer. It is now generally accepted that detection of H. pylori by NOD1 expressed in gastric epithelial cells plays an indispensable role in mucosal host defense systems against this organism. Recent studies have revealed the molecular mechanism by which NOD1 activation caused by H. pylori infection is involved in the development of chronic gastritis and gastric cancer. In this review, we have discussed and summarized how sensing of H. pylori by NOD1 mediates the prevention of chronic gastritis and gastric cancer.     

Soluble vascular cell adhesion molecule-1 (sVCAM-1) is an independent prognostic marker in Hodgkin's disease

Serum levels of soluble vascular cell adhesion molecule-1 (sVCAM-1, sCD106) were significantly elevated in patients with Hodgkin's disease (HD) (n = 101) compared to controls (n = 31) (P < 0.0001). sVCAM-1 correlated with histology, stage, B-symptoms, and prognostic markers (sICAM-1, sCD30, sIL-2R, LDH). sVCAM-1, sICAM-1 and sCD30 added independent prognostic information for both disease-free and overall survival. 14 biopsies from 13 patients with HD were immunostained for VCAM-1 and ICAM-1. The vascular endothelium stained positive for VCAM-1 in 10/12 evaluable biopsies and for ICAM-1 in all evaluable biopsies. A stromal expression of both adhesion molecules precluded a precise evaluation of HRS-cells. This led us to investigate VCAM-1 (and ICAM-1) expression in six Hodgkin cell lines (HDLM-2, L428, L540, L591, DEV, KM-H2). Two cell lines stained positive for VCAM-1 (HDLM-2, L591). All cell lines stained positive for ICAM-1. sVCAM-1 is a new prognostic marker in HD; its predictive power equals or surpasses that of sCD30 and sICAM-1. Furthermore, two Hodgkin cell lines stained positive for VCAM-1. This indicates that VCAM-1 may be expressed by some HD tumour cells in vivo.     

配偶间幽门螺杆菌感染的调查研究

目的调查配偶间幽门螺杆菌感染状况以及确定配偶间是否存在幽门螺杆菌的传播，并分析影响配偶间H．pylori传播的因素。方法使用^13C-尿素呼气试验对武汉市206例胃炎患者及其配偶进行H．pylori感染检测，同时使用ELISA法检测同一地区102例18-22岁未婚志愿者的H．pylori感染状况。结果206例胃炎患者的H．pylori感染率为60．19％（124／206），124例H．pylori感染的胃炎患者的配偶的感染率为56．45％（70／124），82例未感染患者的配偶Hpylori阳性率为37．80％（31／82）。拥有H．pylori阳性的配偶是H．pylori感染的危险因素（OR=2．13，95％可信区间：1．21-3．75）。未婚志愿者的H．pylori阳性率（34．31％）显著低于H．pylori（＋）胃炎患者配偶的感染率（X^2=11．026，P=0．001〈0．05）。胃炎患者的呕吐症状和抽水马桶的使用与H．pylori（＋）患者的配偶感染相关（P〈0．05）。结论H．pylori可以在夫妻之间传播，胃炎患者的呕吐和反流症状以及家庭不良卫生状况是H．prlori（＋）者的配偶感染的危险因素。     

粪便抗原检测诊断幽门螺杆菌现症感染

目的 评价应用免疫酶联吸附试验(ELISA)检测粪便中幽门螺杆菌(Helicobacter pylori)抗原诊断H.pylori现症感染的敏感性和特异性。方法 应用^14C呼气试验以及幽门螺杆菌粪便抗原(HpSA)试验，对100例因上消化道不适就诊，怀疑有H.pylori感染的患者进行检测，观察两种检查的符合率。结果 ^14C呼气试验和HpSA同时阳性者38例，^14C呼气试验阳性而HpSA阴性者4例；^14C呼气试验和HpSA同时阴性者57例，^14C呼气试验阴性而HpSA阳性1例。以^14C呼气试验作为金标准计算，HpSA检测方法的敏感性为90．48％，特异性为98．28％。结论 幽门螺杆菌抗粪便原检测与^14C呼气试验有较高的符合率，而且简便易行，不需特殊设备，解决了无法进行呼气试验的婴幼儿和有肺部疾患者的非侵人性幽门螺杆菌现症感染诊断问题，是一种非侵入性幽门螺杆菌现症感染诊断的新方法。