High-definition optical magnification with digital chromoendoscopy detects gastric mucosal changes in dyspeptic-patients

BACKGROUND Accurate detection of gastric infection by Helicobacter pylori(H.pylori) and premalignant lesions are important for effective provision of treatment,preventing the development of gastric neoplasia.Optical enhancement systems with optical magnification improved the identification of mucosal superficial and vascular patterns in patients with dyspepsia.AIM To evaluate an optical enhancement system with high-definition magnification,for diagnosis of normal gastric mucosa,H.pylori-associated gastritis,and gastric atrophy.METHODS A cross-sectional,nonrandomized study from November 2015 to April 2016 performed in a single-tertiary academic center from Ecuador.Seventy-two consecutive patients with functional dyspepsia according to the Rome III criteria,were tested for H.pylori using a stool antigen test and were assigned to an Hp+group or an Hp-control group.Esophagogastroduodenoscopy with highdefinition optical magnification and digital chromoendoscopy was performed,and patients were classified into 4 groups,in accordance to the microvasculararchitecture pattern of the mucosa.Interobserver and intraobserver agreement among operators were calculated.RESULTS Of the 72 participants,35 were Hp+ and 37 were Hp-.Among 10 patients with normal mucosal histology in biopsy samples,90% had a Type I pattern of microvascular architecture by endoscopy.Among participants with type IIa and type IIb patterns,significantly more were Hp+ than Hp-(32 vs 8),and most(31 out of 40) had histological diagnoses of chronic active gastritis.Two of the three participants with a histological diagnosis of atrophy had a type III microvascular pattern.The type I pattern predicted normal mucosa,type IIa–IIb predicted H.pylori infection,and type III predicted atrophy with sensitivities of 90.0%,91.4%,and 66.7%,respectively.The intraobserver and interobserver agreements had kappa values of 0.91 and 0.89,respectively.CONCLUSION High-definition optical magnification with digital chromoendoscopy is useful for diagnosis of normal gastric mucosa and H.pylori-associated gastritis with high accuracy,but further studies are needed to determine whether endoscopic diagnosis of gastric atrophy is feasible.     

Prevalence of H pylori associated 'high risk gastritis' for development of gastric cancer in patients with normal endoscopic findings

INTRODUCTION H pylori infection is an established risk factor for development of gastric cancer[1,2]. According to the model of carcinogenesis of the intestinal type adenocarcinoma proposed by Correa, the multi-step development starts from the condition o…     

复方蜥蜴散对慢性萎缩性胃炎模型大鼠血清NO及iNOS水平影响的实验研究

目的:观察复方蜥蜴散对慢性萎缩性胃炎(Chronic atrophic gastritis,CAG)模型大鼠血清NO及iNOS水平的影响,探讨其治疗CAG的作用机制。方法:采取55℃热盐水、2%水杨酸、20mmol/L脱氧胆酸钠三个致萎缩因素配合饥饱失常造成CAG模型。将实验动物分为正常对照组,模型对照组,维酶素组,复方蜥蜴散高、中、低剂量组。检测大鼠血液中NO和iNOS水平及观察胃黏膜组织学方面的改变。结果:模型组大鼠NO和iNOS水平明显高于正常组(P<0.01),病理组织学上也有较大改变,而经复方蜥蜴散治疗1个月后,NO和iNOS水平恢复正常,胃黏膜病理组织学改善明显。结论:复方蜥蜴散可以逆转萎缩胃黏膜的病理改变,发挥保护胃黏膜的作用。     

超微柴胡疏肝散治疗慢性浅表性胃炎30例总结

目的：观察超微柴胡疏肝散与传统汤剂对慢性浅表性胃炎（肝胃不和型）的治疗效果。方法：治疗组30例采用超微柴胡疏肝散治疗，对照组30例采用柴胡疏肝散传统汤剂治疗。结果：两组总有效率和症状积分比较均无显著性差异（P〉0．05）。结论：两种剂型疗效相当，但超微剂型能减少用药量，节省药材。     

在就诊患者和健康体检者中筛检人胃螺杆菌

目的：通过几种不同的检查方法调查人胃螺杆菌在人群中的感染情况及在慢性胃炎中的致病作用。方法：３８０例行消化道症状的就诊患者和４３２名健康体检者的胃粘膜活检标本分别行涂片、尿素酶试验、１４Ｃ－尿素呼吸试验和组织学检查。结果：人胃螺杆菌在上述两类人群中的感染率分别为２．１１％和１．１６％。涂片Ｇｒａｍ染色和切片ＷＳ银染是目前诊断该菌感染较理想的手段，不论有无症状，患者在组织学上均伴有慢性炎症改变，根据形态学特点该菌可大致分为两型，分别与某些动物胃内的螺旋菌相似。结论：人胃螺杆菌在人群中感染率较低，可能是一种源自动物的慢性胃炎相关性病原菌。     

胃久灵抗溃疡、抗胃炎作用及毒性的初步研究

以中药验方胃久灵对大白鼠的两种急性溃疡模型、一种慢性溃疡模型及两种胃炎模型用药治疗,证明胃久灵确有抗溃疡抗胃炎作用.其中对慢性溃疡的治疗作用较为突出.经急、慢性毒性实验,未见对重要脏器有任何毒性损害.     

胆汁反流性胃炎临床分析

目的:进一步提高对胆汁反流性胃炎(BRG)的病因、诊断及治疗有关问题的认识。方法:从一般资料、临床表现、内镜及病理所见、幽门螺杆菌(Hp)检测、治疗与转归几方面对84例BRG病例进行回顾分析。结果:男性多于女性,20-40岁发病率最高(82.1%,69/84),全部病例均有上腹痛,但无特异性,内镜检查全部病例黏液湖呈黄绿色,黏膜明显充血、水肿,以窦部或远端胃为甚,部分病例见胆汁反流,黏膜糜烂,质脆易出血,附有胆汁斑;病理检查,慢性胃窦炎为14例(16.7%),伴轻度萎缩8例(9.5%),中度萎缩7例(8.3%),肠化生3例(3.6%),非典型增生2例(2.4%),反应性胃炎50例(59.5%);Hp阳性36例(42.8%);全部病例治疗4周后症状明显减轻或消失。结论:BRG病因原发病例(85.7%)多于继发性(14.3%),而Hp可能为BRG的病因之一;诊断主要根据胃镜所见及病理组织学胃小凹增生性改变,结合临床症状及既往病史诊断较为可靠;治疗选用胆酸络合剂、胃肠动力剂、黏膜保护剂、抑酸剂能收到较好疗效。     

美宝胃肠胶囊治疗胃炎和溃疡病的临床观察

目的：探讨美宝胃肠胶囊修复胃炎、胃溃疡等胃肠黏膜病变的治疗作用。方法：随机将40例具有胃黏膜病变的患者（慢性胃炎患者25例，消化性溃疡15例）分为两组：治疗组服用美宝胃肠胶囊及奥美拉唑治疗；对照组单用奥美拉唑治疗，根据临床症状改善情况及胃镜下黏膜修复情况综合评价疗效，并进行组间比效。结果：美宝胃肠胶囊联合奥美拉唑治疗组病人的临床症状改善率，优于单纯接受奥美拉唑治疗的对照组，治疗组的胃镜下病灶修复状况也优于对照组。结论：美宝胃肠胶囊对胃黏膜病变的修复与症状改善有良好的治疗作用。     

男性慢性胃炎患者人格特征初探

本文采用卡氏十六种人格因素量表，对纤维胃十二肠镜和活体组织病理检查确诊，剔除可能影响调查的疾患之后的５６例慢性胃炎患者做了测查，结果与中国男性成人常模对照，提示男性慢性胃炎患者的主要人格特征有：严谨、保守、忧郁、紧张、顺从、依赖、有焦虑倾向，非内向个性，不属于心理不健康人群，而与消化性溃疡个性特征有所不同，但是，矫治其人格缺损及属必要。     

慢性胃炎结节状改变的临床研究

目的 研究萎缩性胃炎和结节性胃炎的结节状改变的特征.方法 在2004年4月至2005年3月之间,通过临床特征、内镜及病理结果,来对比分析胃镜检查中发现的慢性胃炎的结节状改变.结果 本次研究显示慢性胃炎的结节状改变分为结节类型A（结节性胃炎）和B（萎缩性胃炎的结节状改变）.结节性胃炎的胃镜下表现为结节具有大小均一、分布密集的特点,多发生于年轻女性,几乎都以上腹部疼痛为主诉,并且感染了幽门螺杆菌,病理检查有淋巴滤泡而没有萎缩和肠上皮化生.而萎缩性胃炎的结节类型B,胃镜下表现为结节大小不一、分布松散,多发生于50岁以上男性,主诉具有多样性的特点,并且幽门螺杆菌检测部分阴性,病理的结果发现有中、重度萎缩和肠上皮化生,而少有淋巴滤泡.结论 拥有结节状改变类型A的结节性胃炎是一种新的特殊胃炎,不同于萎缩性胃炎的结节状改变,应该引起重视.