止血愈疡颗粒对幽门结扎型胃溃疡大鼠氧自由基参数的影响

目的：观察止血愈疡颗粒（ZY）对幽门结扎型胃溃疡大鼠组织，血中氧自由基参数的影响。方法：将动物随机分成正常组，假手术组，空白对照组，甲氰咪胍（CI）组，ZY组，后3组采用幽门结扎法建立胃溃疡模型，观察胃溃疡组织，血中氧自由基参数变化及与溃疡积分之间的关系。结果：幽门结扎型胃溃疡大鼠血中超氧化物歧化酶（SOD）活性降低，丙二醛（MDA）含量增加，胃溃疡组织SOD，谷胱甘肽过氧化酶（GSHpx)活性降低，MDA含量增加与溃疡积分之间存在显著正相关，ZY能提高组织中SOD，GSHpx活性及血中SOD活性，降低组织中MDA含量，结论：ZY有抗氧自由基损伤，减少溃疡形成的作用。     

健胃愈疡颗粒对大鼠乙酸性胃溃疡及胃黏膜一氧化氮的影响

[目的]研究健胃愈疡颗粒对胃溃疡的治疗作用及作用机制.[方法]以Okabe改良法复制大鼠实验性胃溃疡模型,设正常组、假手术组、模型组、雷尼替丁组、健胃愈疡组,检测溃汤指数和胃黏膜中一氧化氮(NO)水平.[结果]健胃愈疡颗粒能显著降低溃疡指数(灌药7 d为1.67士0.49,与其他组比较,P＜0.05;灌药14 d为0.80士0.42,与其他组比较,P＜0.01),显著提高胃黏膜NO水平[灌药14 d后为(0.597±0.042)μmol/g蛋白,与其他组比较,P＜0.01].[结论]健胃愈疡颗粒可能通过诱导和促进胃黏膜NO的生成促进溃疡愈合.     

愈疡散对胃溃疡大鼠血一氧化氮和内皮素的影响

[目的]探讨愈疡散对胃溃疡大鼠血一氧化氮(NO)和内皮素-1(ET-1)的影响.[方法]采用大鼠冰醋酸胃溃疡模型,设空白对照组(A组)、假手术组(B组)、西药对照组(C组)、愈疡散大、小剂量组(D、E组)、胃溃疡模型组(F组).A、B、F组均灌服0.85%氯化钠溶液;D、E组分别灌服愈疡散5.0g/kg体重、2.5g/kg体重;C组灌服雷尼替丁0.03g/kg体重.于治疗前后分别检测血NO及ET-1.实验结束后,用苏木精-伊红染色对大鼠再生胃黏膜厚度、上皮细胞/腺腔数比值进行观察.[结果]造模7 d,C、D、E、F组血清NO显著降低,血浆ET-1明显升高,与A、B组比较差异有统计学意义(P＜0.05).治疗28 d,D组血清NO显著升高,而血浆ET-1明显降低,与F、E组比较均P＜0.05.再生胃黏膜厚度:D、E、C组明显高于F组(P＜0.05),D、E组与A、B组比较均P＜0.05.上皮细胞/腺腔数比值:A、B组与C、F组,D组与C、F组之间均P＜0.05.[结论]愈疡散促进溃疡愈合,增加胃黏膜的防御能力,提高再生黏膜功能成熟度,可能与其诱导、促进NO合成,反馈性地抑制ET-1释放,维持NO和ET-1的动态平衡有关.     

健胃愈疡颗粒对胃溃疡大鼠胃组织MK、和表皮生长因子受体表达的影响

目的：探讨健胃愈疡颗粒的疗效及抗复发机制。方法：以Okabe改良法复制大鼠实验性胃溃疡,采用免疫组织化学和原位杂交技术,观察该药对胃溃疡组织Midkine(MK)和表皮生长因子受体（EGFR）表达的影响。结果：模型组MK和EGFR的表达较正常组增高,而健胃愈疡治疗组MK和EGFR的表达增高较模型组更为明显。结论：健胃愈疡颗粒可增加MK和EGFR的上增性表达,这可能是其促进溃疡愈合和提高溃疡愈合质量从而减少溃疡复发的物质基础。     

胃溃疡复发模型大鼠胃组织蛋白质组的动态变化及健胃愈疡颗粒干预作用

[目的]通过胃溃疡(GU)复发大鼠胃组织蛋白质差异显示及健胃愈疡颗粒(JWYY)干预,寻找JWYY抗GU复发的相关蛋白。[方法]采用乙酸及白细胞介素1β(IL-1β)复制GU复发动物模型,分别于造模后第8、16、92天,对大鼠GU复发过程进行动态观察,并同时给予JWYY干预,收集各时间点大鼠胃组织,提取胃组织总蛋白质,分别进行双向凝胶电泳(2-DE)分离I、mage Scanner扫描、PDQuest行差异蛋白质分析、凝胶考染,显示差异蛋白质。[结果]模型复发组大鼠出现生命活动整体反应(如体重、活动度等)下降;在各组考染凝胶图谱上,可辨识的蛋白质斑点达900-1 300个;与模型复发组相比,JWYY干预后,其蛋白质表达在不同时间点均有差异。[结论]JWYY抗GU复发的作用机制是多方面的,其干预作用与多种蛋白质相关。     

健胃愈疡颗粒调控热休克蛋白抗大鼠胃溃疡复发的蛋白质组学研究

[目的]分析健胃愈疡颗粒(JWYY)对乙酸性胃溃疡(GU)复发大鼠胃组织蛋白质组表达的影响,寻找JWYY抗GU复发的热休克蛋白(HSP)。[方法]应用固相pH梯度(IPG)双向凝胶电泳技术(2-DE)分离对照组和JWYY组大鼠胃组织的总蛋白,胶体考马斯亮蓝染色后,Image Scanner扫描2-DE获取图像,PDQuest图像分析软件分析比较2-DE图谱并识别2组间差异表达的蛋白质,基质辅助激光解析电离飞行时间质谱(MALDI-TOF-MS)获得相应的肽质量指纹图谱(PMF),利用Mascot、NCBInr及SWISS-PROT数据库搜索鉴定蛋白质。[结果]JW-YY组与对照组2-DE的平均匹配率为92.3%,12个已鉴定的HSP差异蛋白质中有HSP27、免疫球蛋白重键结合蛋白(GRP78)、HSP70、HSP60,并且以上HSP蛋白在JWYY组大鼠胃组织中表达均上调。[结论]GU复发受多种HSP的调节,调节相关HSP的上增性表达可能即是JWYY抗GU复发的途径之一。     

止血愈疡颗粒剂对大鼠乙酸型胃溃疡及环核苷酸的影响

自制止血愈疡颗粒剂对乙酸型胃溃疡大鼠有显著的抗溃疡作用。检测雷尼替丁组及模型组大鼠胃粘膜环磷酸腺苷／环磷酸鸟苷（cAMP／cGMP）比值分别为7．2±3．5和24．8±20．8，两组比较差异有显著性意义（P＜0．05）。表明，雷尼替丁能使大鼠胃粘膜cAMP／cGMP水平下降，提示可能cAMP／cGMP比值降低则胃酸分泌减少。止血愈疡颗粒剂表现出与雷尼替丁相同的效应。     

健胃愈疡颗粒剂对复发胃溃疡大鼠胃黏膜组织中血小板源性生长因子mRNA表达的影响

[目的]观察健胃愈疡颗粒(Jianweiyuyang Granule,JWYY)对复发胃溃疡(GU)大鼠胃黏膜组织中血小板源性生长因子(PDGF)mRNA表达的影响及抗复发机制。[方法]Okabe乙酸涂抹法制作大鼠GU模型。腹腔注射白细胞介素-1β(IL-1β)制作GU复发模型。运用RT-PCR方法检测GU复发大鼠胃黏膜PDGF mRNA的表达。[结果]JWYY能明显升高PDGF mRNA的表达水平,且模型组PDGF mRNA的表达水平明显高于对照组(P<0.01)。[结论]JWYY通过提高PDGF mRNA的表达,提高溃疡愈合质量,降低IL-1β所致的大鼠GU复发率。     

健中愈疡片对乙酸胃溃疡大鼠胃粘膜细胞动力学的影响

目的：研究健中愈疡片对乙酸致大鼠胃溃疡边缘粘膜细胞凋亡和细胞增殖的影响。方法：制备乙酸致大鼠胃溃疡模型,分别予健中愈疡片,雷尼替丁和生理盐水治疗14d后,测量溃疡面积,检测胃溃疡边缘粘膜细胞凋亡指数,增殖细胞核抗原标记指数和Bcl-2蛋白表达。结果：健中愈疡片组和雷尼替丁组的溃疡面积明显小于生理盐水组（P＜0．01）。与胃溃疡模型组、雷尼替丁组和生理盐水组比较,健中愈疡片组的溃疡边缘细胞凋亡指数明显下降（P＜0．01）,Bcl-2蛋白表达和增殖细胞核抗原标记指数均显著增加（P＜0．01）。结论：健中愈疡片具有减少胃溃疡边缘粘膜细胞凋亡和和促进细胞增殖的作用,这可能是治疗胃溃疡的作用机制之一。     

Effects of free radical scavengers on indomethacin-induced aggravation of gastric ulcer in rats

Effects of treatment with free radical scavengers in the healing process of acetic acid-induced gastric ulcer on the ulcer aggravation induced by indomethacin were investigated. Gastric ulcers were produced on the anterior wall of the stomach of male Sprague-Dawley rats by submucosal injection of 20% acetic acid. To investigate the role of oxygen radicals, rats with gastric ulcer were treated with scavengers for six weeks and then treated with indomethacin (1 mg/kg/day). While superoxide dismutase (10,000 units/kg/day) did not affect the ulcer area after indomethacin treatment, allopurinol (50 mg/kg/day) slightly inhibited the increase in ulcer area. Dimethyl sulfoxide (1% solution,ad libitum) produced a significant decrease in size of the ulcer after indomethacin treatment. Increased lipid peroxides in the gastric mucosa after indomethacin treatment decreased significantly in the rats of the dimethyl sulfoxide and allopurinol groups. These results indicate that lipid peroxidation mediated by oxygen radicals plays an important role in the mechanism of ulcer aggravation induced by indomethacin.     

芩连合剂对实验性胃溃疡大鼠胃黏膜细胞内钙及氧自由基的影响

[目的]探讨芩连合剂对胃溃疡(GU)的保护作用及其作用机制。[方法]采用无水乙醇灌胃法复制大鼠急性GU模型,测定胃黏膜细胞内丙二醛(MDA)、超氧化物歧化酶(SOD)水平、谷胱甘肽过氧化物酶(GSH-Px)活力及钙离子(Ca2 )浓度。[结果]模型组大鼠胃黏膜细胞内Ca2 浓度及MDA表达较其他各组明显升高,SOD、GSH-Px的表达明显降低,差异均有统计学意义(均P<0.01)。[结论]芩连合剂通过降低胃黏膜细胞内Ca2 浓度及MDA的表达,提高SOD和GSH-Px的表达,起到保护胃黏膜的作用,从而发挥其抗GU的作用。     

Discriminant factors of gastric ulcer healing by colloidal bismuth

One hundred and twelve patients with 49 corpus and 35 prepyloric gastric ulcers and 28 duodenal ulcers associated with gastric ulcers were entered into a stratified, controlled double-blind randomized study comparing the healing efficacy of colloidal bismuth suspension with placebo. Healing of corpus and prepyloric ulcers, but not duodenal-ulcer associated gastric ulcers, was significantly better with the bismuth compound than with placebo. The clinical, personal, ulcer and acid secretory data of these patients were prospectively collected and evaluated by stepwise discriminant analysis in two phases. In the first phase, the collected data of 91 consecutive patients were entered into computer analysis. The derived discriminant function classified patients into healed and unhealed categories with a sensitivity of 82%, specificity of 77%, positive diagnostic value of 73%, negative diagnostic value of 85% and diagnostic efficiency of 79%. In phase two, the discriminant function from phase 1 was applied prospectively to 21 patients to predict the outcome of treatment. Five out of five healed and 11/16 unhealed gastric ulcers were correctly predicted, giving a diagnostic efficiency of 76%. The present study shows that healing or non-healing of gastric ulcer can be predicted with reasonable accuracy by discriminant analysis. In addition, discriminant analysis identified, aside from the efficacious drug, ulcer size, young age, co-existing duodenal ulcer, and concomitant medical condition as adverse factors for gastric ulcer healing.     

促愈颗粒对胃溃疡实验大鼠胃黏膜表皮生长因子及其受体表达的影响

[目的]研究促愈颗粒对乙酸烧灼型胃溃疡(GU)大鼠胃黏膜表皮生长因子(EGF)及其受体(EGFR)表达的影响。[方法]将大鼠随机分为4组:正常对照组,模型组,促愈颗粒组和雷尼替丁组。乙酸制备慢性GU大鼠模型后,于给药14 d和28 d后分2次处死大鼠,观察胃黏膜组织形态,免疫组织化学技术检测大鼠胃黏膜EGF及EGFR水平。[结果]与模型组比较,促愈颗粒组和雷尼替丁组囊状扩张腺体数量均显著减少(P<0.01,<0.05),EGF及EGFR水平均显著增高(P<0.01,<0.05),且促愈颗粒组作用均优于雷尼替丁组(均P<0.05)。[结论]促愈颗粒可能通过增加胃黏膜EGF和EGFR的水平,进而提高GU再生黏膜结构和功能成熟度,从而促进溃疡愈合,提高溃疡愈合质量,并防止溃疡复发。     

荜铃胃痛颗粒联合四联疗法治疗Hp阳性胃溃疡的临床疗效观察

目的:探讨荜铃胃痛颗粒联合四联疗法对Hp相关胃溃疡患者Hp根除率及上腹痛症状缓解情况.方法:将68例Hp阳性的胃溃疡患者随机分为2组,对照组给予四联疗法,实验组给予四联疗法联合荜铃胃痛颗粒,疗程均为14 d.疗程结束后2组患者继续口服抑酸药6周,完全停药4周后复查13C尿素呼气试验及胃镜.观察治疗前后临床疗效,上腹部疼...     

Effects of trimebutine maleate on gastric motility in patients with gastric ulcer

The effects of trimebutine maleate (TM), a prokinetic drug, on gastrointestinal motility in patients with gastric ulcer were investigated. Twenty patients with active gastric ulcers were allocated to two groups; 10 patients received a proton pump inhibitor alone (PPI group), given orally, and 10 patients received oral TM in combination with a PPI (PPI + TM group), each for a period of 8 weeks. Electrogastrography (EGG) and gastric emptying were measured before and after the treatment period. During the active ulcer stage, tachygastria (more than 0.06 Hz) or bradygastria (less than 0.04 Hz) in the EGG frequency were observed in 9 patients either before or after meals. During the healed ulcer stage, tachygastria or bradygastria was observed in 4 of 10 patients in the PPI group, while in the PPI + TM group, 1 patient had tachygastria and none had bradygastria. Postprandial dip (PD) was observed in 3 of the 20 patients during the active stage, while after treatment, PD was observed in 3 patients in the PPI group and in 6 patients in the PPI + TM group, respectively. Gastric emptying in the PPI group did not show any change between before and after treatment, while that in the PPI + TM group improved significantly after treatment. These results suggest that TM may have an ameliorative effect on abnormal gastric motility in patients with gastric ulcer. (Received Sept. 17, 1997; accepted Apr. 24, 1998)     

胃溃疡大鼠胃粘膜血流量与泌酸变化的研究

用手术将十二指肠内容物持续胃内反流制成大鼠胃溃疡及经转流后的溃疡愈合模型进行研究。结果表明,溃疡组于胃窦小弯侧可见8.84±3.08(m~2)~(-3)的慢性溃疡形成,并显示胃粘膜血流量降低,G细胞密度、壁细胞数增加。溃疡愈合组经转流后大部分溃疡已愈合,G细胞密度、壁细胞数降低,粘膜血流量增加。本实验提示,泌酸细胞增多,泌酸量增加和胃粘膜缺血可能是溃疡形成的重要因素,增加胃粘膜的血液供应,降低胃酸分泌可促进溃疡愈合。