H.heilmannii与H.pylori相关性胃炎的对比研究

目的 评估上消化道H.heilmannii感染的临床表现、内镜诊断、病理特征,探讨该菌在上消化道疾病中的致病特点,并与Hpylori相关性胃炎相比较.方法 收集并分析2005至2007年间3107例胃镜受检者的临床资料、内镜表现及病理活检标本.结果 共检出25例H.heilmannii感染,1060例H.pylori感染,3例混合感染.H.heilmannii感染患者中,20例有不同程度的上消化道症状,主要为上腹胀痛、恶心、食欲下降,5例无明显自觉症状;患者内镜下均有慢性胃炎的表现,其中单纯慢性浅表性胃炎7例,伴糜烂3例,萎缩肠化4例,十二指肠球炎2例,胆汁反流、溃疡、息肉各1例;尿素酶试验强阳性3例,阳性3例,弱阳性7例,阴性12例.组织学上,H.heilmannii散在或聚集于胃小凹、腺腔内或上皮表面的黏液层内,1 例标本中可见H.heilmannii侵入壁细胞内.所有H.heilmannii感染者均可见散在的淋巴细胞、浆细胞浸润,12例见中性粒细胞浸润,4例见腺体萎缩和肠化,6例见淋巴滤泡形成.炎症程度总体上较H.pylori感染轻,H.heilmannii相关胃炎中螺杆菌密度、淋巴细胞浸润和中性粒细胞活性程度低于H.pylori相关性胃炎组(P<0.05).结论 H.heilmannii感染主要引起慢性胃炎,其炎症程度轻于H.pylori相关性胃炎.

A comparative study of H.heilmannii-associated and H. pylori-associated gastritis

Objective To evaluate the clinical manifestations, endoscopic features and the clinical pathological characteristics of H. heilmannii-associated gastritis, and to compare these variables with those of H. pylori-ussociated gastritis. Methods The clinical data, endoscopic findings and pathologic characteristics of 3107 patients, who underwent endoscopy from 2005 to 2007, were retrospectively analyzed. Results Twenty-five cases of H. heilmannii infection were identified, the infection rates of H. heilmannii and H. pylori were 0.80% (25/3107) and 4.12% (1060/3107) respectively. Three cases were mixed infections. Of 25 patients, 20 showed such gastroenterologic symptoms to a greater or less extent as abdominal distending pain,nausea and anorexia, and other 5 cases were asymptomatic. All 25 patients showed chronic gastritis by en-doscopy, including chronic superficial gastritis (7/25, 28% ), erosion ( 3/25, 12% ), chronic atrophic gastritis (4/25, 16%), bile reflux(1/25, 4%), ulcer (1/25, 4%), polyp (1/25, 4%) and duodenal bulbar inflammation (2/25, 8% ). In rapid urease test, 3 cases were hyper-positive, 3 cases positive, 7 ca-ses mild-positive and 12 cases negative. According to histological observation, H. heilmannii scattered or ac-cumulated within the gastric pits, glandular lumen or mucus. The organism was observed in parietal cells with cell damage in one case. Sporadic lymphatic and plasmic infiltration were found in all patients with H.heilmannii infection, infiltration of neutrophils (12/25), gland atrophy and intestinal metaplasia (4/25)and lymphoid follicles (6/25) were also observed. Compared with H. pylori-associated gastritis, H. heilman-nii-associated gastritis showed less inflammation, less helicobacter density, mononuclear cell infiltration and neutrophilic activity ( P < 0.05 ). Conclusion H. heilmanaii mainly induces chronic gastritis, which is less severe than H. pylori-associated gastritis.