Alterations in oxidative stress markers in laryngeal carcinoma patients

Background

Data describing how laryngeal cancer affects oxidative stress markers and antioxidants are limited. This study investigated serum antioxidant enzyme activities and oxidative stress markers before and after laryngectomies in patients with laryngeal cancer.

血浆对氧磷酯酶1活性在溃疡性结肠炎中的变化及临床意义

目的探讨对氧磷酯酶1（PON1）活性在溃疡性结肠炎（UC）中的变化及临床意义。方法分别测定44例活动期UC患者、23例缓解期UC患者及32例健康对照者的血浆PON1、C-反应蛋白（CRP）及丙二醛（MDA）含量,分析其相关性。结果活动期及缓解期UC组血浆CRP、MDA含量显著高于对照组（P〈0.05）,血浆PON1活性显著低于对照组（P〈0.05）。活动期患者组血浆CRP、MDA含量显著高于缓解期患者组（P〈0.05）,血浆PON1活性显著低于缓解期患者组（P〈0.05）。UC患者组对氧磷酯酶1活性与MDA及CRP水平呈负相关（r=-0.358,P〈0.01,r=-0.422,P〈0.01）。结论UC患者PON1活性显著降低,增加的氧自由基（OFR）导致致氧化环境可能使血浆PON1活性显著降低。     

Effects of vitamin A,C and E,or omega-3 fatty acid supplementation on the level of paraoxonase and arylesterase activity in streptozotocin-induced diabetic rats: an investigation of activities in plasma,and heart and liver homogenates

INTRODUCTION

This study was designed and conducted to evaluate the effects of vitamin A, C and E supplementation, and omega-3 fatty acid supplementation on the activity of paraoxonase and arylesterase in an experimental model of diabetes mellitus.

METHODS

A total of 64 male Sprague Dawley^® rats, each weighing 250 g, were randomly distributed into four groups: (a) normal control; (b) diabetic control; (c) diabetic with vitamin A, C and E supplementation; and (d) diabetic with omega-3 fatty acid supplementation. The animals were anaesthetised after four weeks of intervention, and paraoxonase and arylesterase activity in blood plasma, and liver and heart homogenates were measured.

RESULTS

Arylesterase activity in the heart and liver homogenates was significantly lower in the diabetic control group than in the normal control group (p < 0.01). Vitamin A, C and E supplementation, and omega-3 fatty acid supplementation significantly increased liver arylesterase activity (p < 0.05). No significant change was observed in paraoxonase activity and other investigated factors.

CONCLUSION

Vitamin A, C and E, or omega-3 fatty acid supplementation were found to increase liver arylesterase activity in streptozotocin-induced diabetic rats. These supplements may be potential agents for the treatment of diabetes mellitus complications.     

郑州地区汉族健康人群和糖尿病合并冠心病患者血清芳香酯酶活性频数分布态性与192位基因的多态性

目的:研究郑州地区汉族健康人群和糖尿病合并冠心病 (DM CAD)患者血清芳香酯酶 (ArE/PON1 )活性频数分布态性与 192位基因多态性的分布。方法:郑州地区汉族健康人群 321例,DM CAD90例。用终点法测定血清ArE/PON1活性。PCR检测年龄相近的 182例健康人和 90例DM CAD患者ArE/PON1 192位基因多态性。结果:郑州市汉族健康人群与DM CAD患者血清ArE/PON1活性频数均呈单峰正态分布;ArE/PON1 192存在基因多态性,等位基因为Q和R。DM CAD患者ArE/PON1酶活性 (0. 198±0. 015)u/ml,低于正常对照组的 (0. 258±0. 020)u/ml(t=37. 92,P<0. 01);DM CAD患者R基因频率和RR基因型分布频率分别为 62%和 31%,高于正常对照组的 46%和 12% (P< 0. 01)。2个观察组各基因型间血清ArE/PON1酶活性差异无统计学意义。结论:郑州地区汉族人群血清ArE/PON1活性频数分布为单峰正态分布,并存在有ArE/PON1 192位基因多态性,R基因可能是该地区DM CAD的独立危险因素。     

心衰与屏氧酶活性

目的 :探讨慢性充血性心力衰竭时血清屏氧酶活性的变化。方法 :用苯醋酸作为底物测定心衰组和非心衰组患者血清屏氧酶活性。结果 :心衰组患者血清屏氧酶活性显著降低 ;经治疗 14天后心衰组患者血清屏氧酶活性明显上升 ;心衰时屏氧酶活性与肿瘤坏死因子 α呈负相关。结论 :心衰患者屏氧酶活性显著下降     

Catalase/superoxide dismutase (SOD) and catalase/paraoxonase (PON) ratios may implicate poor glycemic control.

BACKGROUND: Previous studies suggest that elevated oxidative stress implicates poor glycemic control resulting in the development of diabetic complications. By evaluating the relationship between paraoxonase (PON) and antioxidant enzyme activities and glycemic control in diabetic patients with and without complications, we investigated whether there is a role of PON and/or antioxidant status in glycemic control. METHODS: A total of 107 patients with type 2 diabetes mellitus (DM) was included in the study. Seventy-five patients had complications including microangiopathy, proliferative retinopathy, and/or nephropathy while 32 had no complications. The control group consisted of 29 age- and sex-matched healthy persons. Serum superoxide dismutase (SOD) and catalase activities were measured according to Sun and Goth, respectively. Basal and salt-stimulated paraoxonase activities and arylesterase activity were determined using the method of Eckerson et al. RESULTS: There was an increase in the catalase activity and a decrease in the basal and salt-stimulated PON activity of patients when compared with controls, while no significant difference was observed in SOD activity. PON phenotypes had no effect on any parameter in patient and control groups. The ratio of catalase/SOD was 2.44 +/- 7.10 and 0.17 +/- 0.09 in diabetics and controls, respectively (p = 0.004); this was associated with an elevation in HbA1c levels. On the other hand, catalase/PON ratio was also enhanced in diabetic patients (2.8 +/- 5.2), showing a relationship with HbA1c levels compared to controls (0.29 +/- 0.3, p = 0.000). CONCLUSIONS: The data of this study reveal that enhanced catalase/SOD and catalase /PON ratios that are correlated with HbA1c levels are observed in diabetic patients; thus, these ratios may be used as markers of poor glycemic control and as risk factors in the development of diabetic complications.     

对氧磷酶与动脉粥样硬化的关系

人血清对氧磷酶 (PON1 )是高密度脂蛋白 (HDL)颗粒中的一种抗氧化酶。近年发现 ,PON1通过参与氧化磷脂的降解抑制低密度脂蛋白 (LDL)氧化 ,是HDL阻止LDL氧化、行使抗动脉粥样硬化功能的关键酶 ,因而倍受关注。大多数研究结果表明 ,PON1浓度和活性与动脉粥样硬化的发生和发展有密切的关系。另外 ,PON1是冠状动脉疾病的遗传标志物 ,通过检测PON1基因多态性 ,可为冠状动脉疾病的预防提供线索     

血清及高密度脂蛋白中对氧磷酶活性的分光光度测定法

目的　在现有的实验条件下 ,获得稳定可靠的血清及高密度脂蛋白 (high density lipoprotein,HDL)中对氧磷酶 (paraoxonase,PON)活性的测定方法。方法　以乙酸苯酯为底物 ,在对氧磷酶的作用下水解 ,生成产物苯酚 ,测定 5分钟内反应体系中在 2 70 nm处苯酚特征性的紫外吸收 ,换算为酶促反应速度。结果　通过观测底物浓度、p H、激活剂 Ca2 + 、抑制剂 EDTA等对酶促反应的影响 ,得出最适的测定条件 :底物浓度为 5 m mol/ L ,最适 p H为 8.0 ,必需激活剂 Ca2 +浓度为 2 mmol/ L。结论　在该反应条件下 ,测定不同浓度 HDL 或血清中该酶的活性 ,重复性和稳定性均符合要求     

肾移植患者血清芳香酯酶活性与其基因192位多态性的研究

目的 研究郑州地区汉族居民肾移植患者血清芳香酯酶（ArE／PONl）活性变化与其基因192位多态性和脂代谢紊乱的关系。方法 通过测定肾移植（100例）、慢性肾小球肾炎的引起的尿毒症患者（101例）和对照组（105例）血清ArE／PON1活性、胆固醇（TC）、甘油三酯）（TG）、高密度脂蛋白胆固醇（HDL2-C）、高密度脂蛋白2胆固醇（HDL2-C）、高密度脂蛋白3胆固醇（HDL3-C）和氧修饰低密度脂蛋白（oxLDL）等的含量。并用聚合酶链式反应（PCR）分析技术检测了ArE／PON1基因192多态性，进行分析研究。结果 肾移植后60d患者血清ArE／PON1活性、ArE／TC、ArE／HDL3-C水平高于尿毒症组，低于对照组，血清HDL-C、HDL2-C和HDL2-C／HDL3-C水平的变化和ArE／PON1活性相似，HDL3-C、NAG／Cr、BUN和SCr水平降低。仍高于对照组水平，血清LDL-C、TC和TG水平反有升高；肾移植和尿毒症组患者血清HDL—C／TC低于对照组。但两组间的差异无统计学意义。ArE／PON1基因192位等住基因Q、R频率健康人基因分别为0．54与0．46。肾移植组为0．51和0．49，尿毒症组0．53与0．47，3组间Q和R基因频率差异无显著性。三组中各组内基因型RR患者血清ArE／PON1与TC、TG、HDL-C、oxLDL等的水平和基因型QR、QQ患者差异无显著性。结论 提示原发病为慢性肾小球肾炎的尿毒症肾移植后合并冠心病和基因R无明显关系。血清ArE／PON1活性降低对观察肾移植受者脂代谢紊乱合并心血管疾病则具有临床意义。     

半夏泻心汤联合川乌对胃溃疡大鼠血清胃泌素水平的影响

目的:观察半夏泻心汤加减半夏反药川乌对胃溃疡大鼠血清胃泌素水平的影响。方法:SD大鼠50只,随机抽出10只作为正常组,其余大鼠禁食不禁水24 h后,以冷水浸法诱导应激性大鼠胃溃疡模型,将造模成功大鼠随机分为模型组、半夏泻心汤组及半夏泻心汤加川乌组。于次日开始给药,正常组及模型组给予生理盐水10 m L·kg~(-1)灌胃,半夏泻心汤组给予半夏泻心汤水煎液10 m L·kg~(-1)灌胃,半夏泻心汤加川乌组给予半夏泻心汤10 m L·kg~(-1)及川乌水煎液10m L·kg~(-1)灌胃,连续给药7 d,记录各组大鼠摄食量及体质量变化,末次给药后,大鼠禁食12 h,眼眶采血,分离血清,以酶联免疫法检测大鼠血清胃泌素水平,分离大鼠心、肝、脾、肺、肾、胃、胸腺等脏器并称质量,以精密p H试纸检测大鼠胃液p H值,并以游标卡尺测量溃疡面积和溃疡抑制率。结果:半夏泻心汤及半夏泻心汤加川乌组大鼠体质量比给药前有所升高,其中半夏泻心汤加川乌组大鼠体质量高于半夏泻心汤组;与模型组比较,半夏泻心汤组及半夏泻心汤加川乌组大鼠摄食量增加,胃液p H值升高(P0.05),溃疡面积及溃疡抑制率降低(P0.01);此外,半夏泻心汤加川乌组大鼠血清胃泌素水平显著升高,肾脏系数显著降低,与正常组比较,有显著性差异(P0.05)。结论:半夏泻心汤加川乌可升高胃溃疡大鼠血清胃泌素水平,且对胃溃疡大鼠肾脏有一定损伤。     

2型糖尿病合并冠心病患者血清芳香酯酶、黄嘌呤氧化酶及脂蛋白检测

目的:检测2型糖尿病并发冠心病(DM-CHD)患者血清芳香酯酶(ArE/PON1)和黄嘌呤氧化酶(XO)活性及脂蛋白含量.方法:测定78例2型糖尿病(DM)、80例DM-CHD患者与81例健康人血清ArE/PON1、XO、丙二醛(MDA)、超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、高密度脂蛋白胆固醇(HDL-C)和氧化型低密度脂蛋白(ox-LDL)等有关指标,分析上述指标在DM-CHD发病中的意义.结果:与健康组相比,DM与DM-CHD组患者血清ArE/PON1活性降低、XO活性升高;MDA、CAT等水平升高,SOD活性降低;oxLDL水平升高,HDL-C降低,且DM-CHD组的改变较DM组明显.结论:血清ArE/PON1、OX、SOD及脂蛋白的测定可反映DM与DM-CHD患者机体氧化应激与脂代谢紊乱状况,是监测DM并发CHD的有用指标.     

郑州地区汉族正常人群、糖尿病和糖尿病并发冠心病患者芳香酯酶Q192R基因多态性

目的：研究郑州地区汉族正常人群、2型糖尿病（DM）及DM并发冠心病（DM－CAD）患者芳香酯酶（Arylesterase/Paraoxonase,ArE/PON1)192位基因多态性。方法：用比色法测定郑州地区汉族正常人群（61例）、DM（60例）和DM－CAD（67例）患者血清Ar/PON1活性，用聚合酶链式反应分析技术检测ArE/PON1基因192位多态性，用酶法和酶联免疫法分别测定血清胆固醇、高密度脂蛋白胆固醇（HDLc)、氧化型低密度脂蛋白（oxLDL)等指标。结果：郑州地区汉族人群中存在有ArE/PON1192位基因多态性，Q、R基因频率健康人群中分别为0.56与0.44；DM组为0.53与0．47；DM－CAD组为0．38和0．62。DM－CAD组R基因频率高于DM组和对照组。基因型百分比DM－CAD组RR（31％）高于DM组（13％）和对照组（11％）（P＜0．05）。DM与DM－CAD组血清ArE/PON1活性水平低于对照组，以DM－CAD组为最低（P＜0．05）。酶活性的降低与HDLc、HDL2C呈正相关，与oxLDL呈负相关。结论：郑州地区汉族人群存在ArE/PON1 192位基因多态性，并提示R基因是郑州地区汉族人群DM－CAD的危险因素。     

对氧磷酸酯酶-1活性在2型糖尿病及血管病变中的改变

目的：探讨PON-1活性在2型糖尿病（DM）中的改变及其在DM血管病变发生中的作用。方法：检测100例2型DM患者及40例正常对照的对氧磷酸酯酶-1（PON1）活性、总抗氧化能力（T-AOS）、氧化低密度脂蛋白（OX-LDL）、丙二醛（MDA）浓度变化，并按不同分组进行比较。血清PON-1活性用苯乙酸酯为底物，分光光度法测定，OX-LDL用ELISA法测定，MDA用硫带巴比妥酸法测定，T-AOS检测用分光光度法。结果：2型DM组PON-1活性比正常对照组显著降低（P〈0．001），且与HDL减少无关，OX-LDL、MDA显著高于正常对照组（P〈0．001，P〈0．001），T-AOS显著低于正常对照（P〈0．001）。合并血管病变的各组2型DM患者PON-1活性、T-AOS均低于无血管病变组，OX-LDL、MDA均高于无血管病变组。相关分析显示PON-1活性与T-AOS正相关（r=0．778，P〈0．01），与OX-LDL（r=-0．643，P〈0．01）呈负相关。PON-1活性影响因素经多元线性逐步回归分析，发现只有T-AOS、CHO、LDL、OX-LDL的回归系数P值〈0．05。结论：2型DM患者PON-1活性下降，脂蛋白氧化易感性增加，血管易于损伤。PON-1活性降低是2型糖尿病大、微血管病变的危险因素。     

慢病毒载体表达外源PON1对小鼠巨噬细胞的影响

目的:为探讨对氧磷酯酶1(PON1)在机体代谢性疾病中的作用及机制,本实验构建含人源性PON1基因的慢病毒表达载体,研究其表达分泌PON1的能力及对小鼠巨噬细胞的影响。方法:根据人肝cDNA文库的PON1序列设计特定引物,定点诱变PCR获得两端为PmeⅠ内切酶位点的目的基因,经酶切连接到pWPI-GFP载体上,筛选及DNA测序鉴定。磷酸钙法瞬时转染293T细胞,荧光显微镜观察GFP表达反映转染效率,Western Blotting检测细胞培养基中PON1分泌表达量,采用对氧磷为底物检测PON1活性。含PON1的培养基与小鼠腹腔巨噬细胞共孵育,ELISA法检测氧化条件下细胞分泌肿瘤坏死因子α(TNF-α)、白细胞介素-6(IL-6)的水平。结果:构建的pWPI-PON1慢病毒表达载体序列正确,高效转染293T细胞(转染效率可达到80%-90%)可有效分泌表达PON1至培养基,显著提高培养基PON1活性,与对照组相比,培养基中PON1可明显抑制巨噬细胞炎症因子TNF-α、IL-6的分泌(P<0.01)。结论:pWPI-PON1慢病毒载体高效表达分泌的外源PON1能有效降低巨噬细胞的炎症反应。     

丙氨酰谷氨酰胺二肽对大鼠急性胃溃疡的抑制作用

目的 在急性胃溃疡大鼠模型上评价丙氨酰谷氨酰胺二肽预防给药对不同因素所致大鼠急性胃溃疡的作用,探讨其可能作用机制。方法 建立水浸应激、无水乙醇和幽门结扎所致急性胃溃疡大鼠模型。每种胃溃疡模型均选用60只SD大鼠,随机分为模型组、西咪替丁（0.1 g/kg）组、麦滋林-S（1.0 g/kg）组以及丙氨酰谷氨酰胺二肽低（0.5 g/kg）、中（1.0 g/kg）及高（1.5 g/kg）剂量组。实验前分别给予不同药物灌胃,每天1次,连续3 d。以溃疡指数、胃液量、胃酸、游离酸、总酸及胃蛋白酶活性等为评价指标,观察不同剂量丙氨酰谷氨酰胺二肽灌胃给药对实验性胃溃疡的治疗效果。结果 在所选剂量范围内,丙氨酰谷氨酰胺二肽均可显著降低大鼠的溃疡指数（P<0.01）;高、中剂量丙氨酰谷氨酰胺二肽对溃疡的抑制作用与麦滋林-S基本相当。丙氨酰谷氨酰胺二肽还可显著抑制幽门结扎型大鼠胃液游离酸分泌（P<0.01）,降低胃蛋白酶活性（P<0.05）。结论 丙氨酰谷氨酰胺二肽对不同因素所致急性胃溃疡均具明确治疗效果;其抗胃溃疡作用机制除已知黏膜保护作用外,还可能与其对胃酸及胃蛋白酶抑制作用有关。     

心衰与屏氧酶活性

目的：探讨慢性充血性心力衰竭时血清屏氧酶活性的变化。方法：用苯醋酸作为底物测定心衰组和非心衰组患者血清屏氧酶活性。结果：心衰组患者血清屏氧酶活性显著降低；经治疗14天后心衰组患者血清屏氧酶活性明显上升；心衰时屏氧酶活性与肿瘤坏死因子－α呈负相关。结论：心衰患者屏氧酶活性显著下降。     

Protective effect of lysozyme chloride on gastric oxidative stress and hemorrhagic ulcers in severe atherosclerotic rats.

BACKGROUND: Calcium and cholesterol play major roles in the formation of atherosclerosis. Whether severe atherosclerosis induced by co-administration of a mixture containing vitamin D2 (vit D2) and cholesterol can result in gastric hemorrhagic damage is unknown. Gastric oxidative stress and hemorrhagic ulceration in rats with atherosclerosis induced by co-administration of vit D2 and cholesterol and the protective effect of lysozyme chloride on this ulcer model were investigated. MATERIAL/METHODS: Male Wistar rats were challenged intragastrically once daily for 9 days with 1.0 ml/kg of corn oil containing vit D2 and cholesterol to induce atherosclerosis. Control rats received the same volume of corn oil only. After 24-h fasting followed by gastric surgery, the rat stomachs were irrigated for 3 h with simulated rat gastric juice or normal saline. Various gastric mucosal ulcerogenic factors (acid back-diffusion, lipid peroxides, histamine concentration, and hemorrhagic ulcers) and defensive substances (mucosal glutathione and mucus secretion) were determined. RESULTS: Augmentation of serum calcium concentration, total cholesterol, and low-density lipoprotein was observed in atherosclerotic rats. Greater mucosal ulcerogenic parameters and lower defensive substances were achieved in these rats. High correlation between decreased mucosal glutathione and ulceration as well as between increased mucosal lipid peroxide levels and ulceration was also found in the atherosclerotic rats. Daily intragastric lysozyme chloride dose-dependently protected gastric mucosal hemorrhagic damage in the atherosclerotic rats. CONCLUSIONS: Atherosclerosis induced by co-administration of vit D2 and cholesterol could produce gastric oxidative stress and hemorrhagic ulcer that was ameliorated by lysozyme chloride in rats.     

酱头抗胃溃疡的作用及机制研究

目的：研究酱头对乙醇诱导的人胃上皮细胞（GES-1）的保护作用及其抗大鼠胃溃疡的作用和机制。方法：将细胞分为正常对照组、模型对照组、酱头95%醇提物组、酱头50%醇提物组、酱头水煎提取物组,采用1%乙醇建模,MTT法检测GES-1细胞增殖情况。60只SD大鼠随机分为正常对照组、模型对照组、雷尼替丁组,酱头95%醇提物小、中、大剂量组（150、300、600?mg/kg）,连续灌胃14?d。采用无水乙醇建模,比较各组大鼠胃溃疡面积及溃疡抑制率;扫描电镜观察胃黏膜损伤程度;酶联免疫吸附测定法检测血清中肿瘤坏死因子（TNF）-α、白介素（IL）-6、IL-1β水平,胃组织中丙二醛（MDA）含量,超氧化物歧化酶（SOD）、谷胱甘肽（GSH）、过氧化氢酶（CAT）活性。结果：三种酱头提取物中,酱头95%醇提物对于GES-1细胞的保护作用最强。动物实验中,与正常对照组比较,模型对照组胃黏膜上出现大量溃疡,而酱头95%醇提物各剂量组及雷尼替丁组溃疡面积较模型对照组明显减小（均P<0.05）。与模型对照组比较,酱头95%醇提物各剂量组及雷尼替丁组均可明显降低大鼠血清中TNF-α、IL-1β和IL-6水平及胃组织中MDA含量,提高胃组织中SOD、CAT、GSH活性（均P<0.05）。结论：酱头95%醇提物可通过降低血清中TNF-α、IL-1β和IL-6水平及胃组织中MDA含量,提高胃组织中SOD、CAT、GSH活性,起到治疗乙醇诱导胃溃疡的作用。     

楹树提取物对大鼠醋酸型慢性胃溃疡的治疗作用及抗炎机制

目的 研究楹树提取物对大鼠醋酸型慢性胃溃疡的治疗作用及其抗炎机制.方法 将50只雄性Wistar大鼠随机分为5组:正常对照组、模型组、法莫替丁组、楹树提取物100和200 mg/kg组.用30%醋酸诱导大鼠慢性胃溃疡,连续给药12 d,观察大鼠一般行为状态和胃组织形态并测定胃溃疡面积,综合评价药物抗胃溃疡作用.将48只雄性Wistar大鼠随机分为3组:正常对照组、模型组、楹树提取物200 mg/kg组.手术后连续给药3 d后处死大鼠,取溃疡部位的胃组织,观察胃组织病理学变化,ELISA测定胃组织中炎性因子TNF-α和IL-6的浓度,邻联茴香胺法测定髓过氧化物酶(MPO)活性,Western印迹法检测胃组织P38和JNK的磷酸化水平.结果 与模型组相比,楹树提取物200 mg/kg组大鼠溃疡面积减少38.4%(P<0.05),胃组织中TNF-α和IL-6的浓度分别降低43.8%(P<0.01)和32.7%(P<0.01),MPO活性降低37.3%(P<0.01),P38磷酸化水平下调(P<0.01),而JNK磷酸化水平、P38及JNK总蛋白水平均无明显改变.结论 楹树提取物(200 mg/kg)显著改善醋酸损伤引起的胃组织结构破坏,对大鼠醋酸型慢性胃溃疡具有一定的治疗作用,其作用机制可能是通过抑制p38炎症信号通路的过度激活从而减轻胃组织炎症反应,JNK通路未参与该过程.     

胃癌胃良性病变患者血清和局部组织中IL—I水平及意义

目的探讨白细胞介素－Ｉ（ＩＬ—Ｉ）的水平与胃癌发病的关系。方法应用生物反应测定法对２７例胃癌、１５例胃溃疡、１６例慢性表浅性胃炎，１８例慢性萎缩性胃炎及２２例正常人的血清和组织培养上清液ＩＬ—Ｉ活性进行进行了测定．结果胃癌患者血清和组织中ＩＬ—Ｉ水平均低于正常人，也低于胃良性病变组；胃溃病组织中ＩＬ—Ｉ水平低于正常人，但高于胃癌组织。结论胃癌的发生可能与ＩＬ—Ｉ水平低下有关。胃溃汤组织中ＩＬ－Ｉ低下可能是其癌变的因素之一。