C-erbB2过度表达对肺腺癌预后的临床观察

目的：前瞻性探讨C-erbB2表达等指标对肺腺癌的复发及生存期的影响。方法：采用免疫组化等方法检测70例肺腺癌的病理标本C-erbB2表达等，并长期随访患者。结果：患者的KPS评分、肿块大小、有无远处转移、TNM分期以及C-erbB2表达等与肺腺癌复发及生存期有关（P〈0．05）。结论：患者的KPS评分、肿块大小、有无淋巴结转移、TNM分期以及C-erbB2表达等指标可以预测肺腺癌的预后。     

肺腺癌中微乳头结构临床病理及预后意义的探讨

目的探讨肺腺癌中微乳头结构对肿瘤侵袭行为及其对预后的影响。方法选择具有完整临床病理及随访资料结果的肺腺癌91例,将病例分成微乳头结构阳性组（41例）和阴性组（50例）。阳性组按照该成分占肿瘤的多少又分成微乳头结构＋（占肿瘤的1％～10％）,＋＋（占肿瘤的11％～30％）,＋＋＋（超过肿瘤的30％）。结果总的5年生存率是64．8％。临床分期5年生存率分别为Ⅰ期88．9％、Ⅱ期46．2％、Ⅲ期23．8％。不同临床分期病例间的生存率差异有统计学意义（P=0．000）。微乳头结构含量多少与临床分期、肿瘤大小和5年生存率无关,P值分别是0．065、0．358、0．206。而微乳头结构阳性组和阴性组5年生存率分别是：41．5％和84．0％,P=0．000,且淋巴结转移率前者（65．9％）明显高于后者（20．0％）,P=0．000。有无微乳头结构与临床分期和肿瘤大小有关,P值均为0．000,即分期越晚,肿瘤越大,出现此结构的几率越高。而有无微乳头结构与性别、吸烟史无关。同一临床分期中阳性组与阴性组5年生存率分别是：Ⅰ期：78．6％、92．6％（P=0．1548）;Ⅱ期：30．0％,100％（P=0．0598）;Ⅲ期：17．7％,28．6％（P=0．4045）,但差异无统计学意义。结论肺腺癌中微乳头结构成分提示肿瘤高侵袭转移行为,是影响预后的重要因素,该病理形态的出现应提醒临床采取积极治疗措施并密切随访。     

M1和M2型巨噬细胞表型的比较分析

通过对M1和M2型巨噬细胞表型相关指标的比较分析,评价各鉴定巨噬细胞类型的表型指标及其意义。按常规方法以IFN-γ及LPS将骨髓来源巨噬细胞诱导成M1型巨噬细胞,以IL-4诱导出M2型巨噬细胞。分别以RT-PCR和酶活性定量方法检测精氨酸代谢相关酶的表达和活性;以ELISA检测IL-12和IL-10的分泌;以FACS检测巨噬细胞膜分子的表达。结果显示:M1型巨噬细胞诱导性一氧化氮合酶(inducible nitric oxide synthase,iNOS)表达和活性水平较未刺激组明显升高,IL-12产生显著增加,CD16/32表达上调;而M2型巨噬细胞I型精氨酸酶(arginase 1,Arg-1)的表达水平和酶活性较未刺激巨噬细胞显著提高,IL-10分泌轻度增加,并且表达高水平的CD206和DECTIN-1。表型比较分析结果表明,iN-OS表达和活性、IL-12的分泌和膜蛋白CD16/32可用于鉴定M1型巨噬细胞,而Arg-1、CD206和DECTIN-1是鉴定M2型巨噬细胞较为理想的表型指标。     

肺腺癌中CALHM2、PD-L1的表达及其预后分析

目的 探讨肺腺癌中钙稳态调节剂2(calcium homeostasis modulators 2, CALHM2)、PD-L1的表达及其预后特征。方法 利用GEPIA2数据库分析CALHM2 mRNA的表达及其预后;收集544例肺腺癌临床资料,采用免疫组化检测CALHM2、PD-L1的表达,分析两者表达与临床病理特征及预后的关系。结果 GEPIA2数据库分析显示,CALHM2 mRNA在肺肿瘤组织中明显低表达(P<0.05)。544例肺腺癌中CALHM2表达呈三种模式,包括胞质239例(43.9%)、胞核156例(28.7%)及胞质核共表达103例(18.9%)。其中,男性、有吸烟史及中分化腺癌中CALHM2胞质表达较多(P<0.05)。相关性分析显示,CALHM2的表达模式与PD-L1存在一定相关性(P<0.05)。Kaplan-Meier生存分析：单纯CALHM2胞核表达及伴PD-L1≥1%患者CALHM2胞核表达者的预后均明显优于胞质表达者(P<0.05)。结论 肺腺癌中CALHM2呈胞核、胞质表达,结合PD-L1表达共同分析可初步评估患者的预后。     

肺腺癌中C-met和Cox-2的表达及预后意义

目的探讨肺腺癌中C-met和Cox-2的表达及其与临床病理特征及预后的关系。方法采用免疫组化EnVision两步法检测肺腺癌中C-met和Cox-2的表达,并分析两者表达与临床病理特征和总生存期的关系。结果 C-met在肺腺癌中的高表达率为22.1%(31/140),其高表达与淋巴结转移、病理分级、临床分期有关(P<0.05)。Cox-2在肺腺癌中的阳性率为61.4%(86/140),其表达与吸烟史、淋巴结转移、病理分级、临床分期有关(P<0.05)。肺腺癌中C-met与Cox-2的表达无相关性(r_s=-0.143,P=0.092)。Kaplan-Meier生存曲线显示,C-met高表达组患者预后较低表达组差(χ²=4.862,P=0.027)。Cox-2阳性组患者总生存期较阴性组短(χ²=15.352,P<0.001)。多因素Cox回归分析显示,C-met与Cox-2可作为影响肺腺癌患者预后的独立因素。结论 C-met高表达和Cox-2阳性提示患者预后不佳,可作为评估预后的重要指标之一。     

人肺腺癌干细胞表型与预后的相关性

背景：肺腺癌干细胞是肺腺癌确诊的重要实验室依据,但其评估患者预后的价值如何,临床尚未定论。 目的：探讨人肺腺癌干细胞表型与患者预后的关系。 方法：选取2010年2月至2013年1月在新疆医科大学第一附属医院治疗的肺腺癌患者48例,采用免疫荧光法检测患者肺腺癌干细胞表型标志,比较不同表型与患者临床病例特征以及患者预后的关系。 结果与结论：48例肺腺癌组织中均观察到SP-C表达和CCSP表达,具有肺细支气管肺泡干细胞的表型特征,其中34例同时表达OCT4(OCT4⁺支气管肺泡干细胞组),14例不表达OCT4(OCT4^-支气管肺泡干细胞组)。OCT4⁺支气管肺泡干细胞组和OCT4^-支气管肺泡干细胞组肺腺癌患者的年龄、性别、吸烟史以及肿瘤分期差异无显著性意义(P > 0.05);OCT4⁺支气管肺泡干细胞组有23例(68%)患者癌细胞转移,明显高于OCT4^-支气管肺泡干细胞组(21%),差异有显著性意义(P < 0.05);在腺癌患者年龄、性别、吸烟史、分期以及癌细胞转移等临床病理特征分层中,OCT4^-支气管肺泡干细胞组肺腺癌2年生存率普遍高于OCT4⁺支气管肺泡干细胞组,两组生存曲线差异有显著性意义(P < 0.05)。结果表明人肺腺癌干细胞具有肺细支气管肺泡干细胞表型特征,同时表达胚胎干细胞基因OCT4时,患者预后差,与肺腺癌转移有关。 中国组织工程研究杂志出版内容重点：干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程全文链接：     

pT1期肺腺癌间质浸润的分级及预后意义

目的 探讨TNM病理分期T1(pathologic-T1,pT1)期肺腺癌中间质浸润分级的预后意义.方法 选择具有完整临床病理及随访资料结果 的pT1期肺腺癌85例,根据间质浸润在肿瘤中的部位将每例肿瘤中间质浸润的程度分为1-3级,分析各间质浸润级别病例的临床病理特征及预后.结果 间质浸润各级别肿瘤的病例数为1级:17例(20%),2级:12例(14%),3级:56例(66%).临床病理特征:肿瘤大小及淋巴血管侵犯率除1级病例小于3级病例(P值分别为0.005及0.018)外其余各级病例间的差异无统计学意义.淋巴结转移率及病理学分期在1级和2级病例完全相同并低于3级病例(1级与3级P值分别为0.007及0.002;2级与3级P值分别为0.027及0.021).性别、年龄及吸烟史各级病例间的差异无统计学意义.预后:本组病例5年总生存率是63%.1-3级病例的5年生存率分别为100%、83.3%及46.6%,2级与3级病例间的差异有统计学意义(P=0.027),随访期间病死率1-3级病例分别为0、16.7%及42.9%,1级与3级病例间的差异有统计学意义(P=0.001),而与2级病例间的差异无统计学意义.单因素预后分析提示间质浸润分级(P=0.001)、病理学分期(P<0.001)、淋巴血管侵犯(P<0.001)及淋巴结转移(P<0.001)与预后相关.多因素预后分析提示仅病理学分期(P<0.001)为独立预后因素.结论 间质浸润分级是一个与肿瘤预后及其他预后因素均密切相关组织学分级系统,它可作为pT1期肺腺癌预后分类的标准之一.     

pT1期肺腺癌间质浸润的分级及预后意义

Objective To study the prognostic significance of grading system for stromal invasion in pathologic tumor stage Tl (pTl) adenocarcinoma of lung.Methods Eighty-five cases of surgically resected pTl lung adenocarcinoma with clinicopathologic and follow-up data were retrospectively reviewed.The degree of invasive growth was classified into three grades according to its location in the tumor.The clinicopathologic characteristics and prognostic significance were analyzed.Results Amongst the 85 cases studied,17 cases (20% ) were in grade 1,12 (14% ) in grade 2 and 56 (66% ) in grade 3.The tumor size was smaller and lymphovascular permeation was less frequently encountered in cases with grade 1 stromal invasion than in those with grade 3 (P =0.005 for tumor size and P =0.018 for occurrence of lymphovascular permeation).The rate of lymph node metastasis and pathologic staging in cases with grade 1 and grade 2 were similar and were significantly lower than those with grade 3 ( P = 0.007 for rate of lymph node metastasis in grade 1 versus grade 3 tumors,P = 0.002 for pathologic stage in grade 1 versus grade 3 tumors,P = 0.027 for rate of lymph node metastasis in grade 2 versus grade 3 tumors and P =0.021 for pathologic stage in grade 2 versus grade 3 tumors).There was no statistically significant difference with respect to age,gender and smoking history of the patients,amongst cases in different grades.The overall five-year survival rate was 63%.The five-year survival rates for cases with grade 1,grade 2 and grade 3 were 100% ,83.3% and 46.6% ,respectively.The difference between cases with grade 2 and grade 3 was statistically significant (P =0.027).The death rate during follow-up for cases with grade 1,grade 2 and grade 3 were 0,16.7% and 42.9% ,respectively.The difference between cases with grade 1 and grade 3 was statistically significant ( P - 0.001).Univariate analysis showed that grade of stromal invasion (P = 0.001),pathologic stage (P<0.001),presence of lymphovascular permeation (P < 0.001) and lymph node involvement　(P < 0.001) represented important prognostic factors.Multivariate analysis also showed that pathologic stage (P <0.001) was an independent prognostic factor.Conclusions The grading system of stromal invasion in pulmonary adenocarcinoma correlates with tumor prognosis and other prognostic factors.It represents a useful criterion in prognostic categorization of pTl adenocarcinoma of lung.     

pT1期肺腺癌间质浸润的分级及预后意义

Objective To study the prognostic significance of grading system for stromal invasion in pathologic tumor stage Tl (pTl) adenocarcinoma of lung.Methods Eighty-five cases of surgically resected pTl lung adenocarcinoma with clinicopathologic and follow-up data were retrospectively reviewed.The degree of invasive growth was classified into three grades according to its location in the tumor.The clinicopathologic characteristics and prognostic significance were analyzed.Results Amongst the 85 cases studied,17 cases (20% ) were in grade 1,12 (14% ) in grade 2 and 56 (66% ) in grade 3.The tumor size was smaller and lymphovascular permeation was less frequently encountered in cases with grade 1 stromal invasion than in those with grade 3 (P =0.005 for tumor size and P =0.018 for occurrence of lymphovascular permeation).The rate of lymph node metastasis and pathologic staging in cases with grade 1 and grade 2 were similar and were significantly lower than those with grade 3 ( P = 0.007 for rate of lymph node metastasis in grade 1 versus grade 3 tumors,P = 0.002 for pathologic stage in grade 1 versus grade 3 tumors,P = 0.027 for rate of lymph node metastasis in grade 2 versus grade 3 tumors and P =0.021 for pathologic stage in grade 2 versus grade 3 tumors).There was no statistically significant difference with respect to age,gender and smoking history of the patients,amongst cases in different grades.The overall five-year survival rate was 63%.The five-year survival rates for cases with grade 1,grade 2 and grade 3 were 100% ,83.3% and 46.6% ,respectively.The difference between cases with grade 2 and grade 3 was statistically significant (P =0.027).The death rate during follow-up for cases with grade 1,grade 2 and grade 3 were 0,16.7% and 42.9% ,respectively.The difference between cases with grade 1 and grade 3 was statistically significant ( P - 0.001).Univariate analysis showed that grade of stromal invasion (P = 0.001),pathologic stage (P<0.001),presence of lymphovascular permeation (P < 0.001) and lymph node involvement　(P < 0.001) represented important prognostic factors.Multivariate analysis also showed that pathologic stage (P <0.001) was an independent prognostic factor.Conclusions The grading system of stromal invasion in pulmonary adenocarcinoma correlates with tumor prognosis and other prognostic factors.It represents a useful criterion in prognostic categorization of pTl adenocarcinoma of lung.     

CUEDC2在肝细胞癌组织中的表达及其临床预后的意义

目的:检测含CUE结构域蛋白2(CUEDC2)在肝细胞癌组织中的表达,探讨其与临床预后的关系。方法:选取具有完整临床及预后资料的186例手术切除肝细胞癌组织的石蜡组织标本,采用免疫组化技术检测CUEDC2的表达,并结合肝癌临床病理因素及预后进行分析。结果:CUEDC2在85.5%(159/186)的肝癌组织中有表达,其中低表达为52.2%(97/186),高表达为47.8%(89/186);CUEDC2的表达状态与血清甲胎蛋白(AFP)水平、肿瘤大小、肿瘤数目、肝癌分化程度和TNM分期有关(P0.05)。Kaplan-Meier生存分析显示CUEDC2高表达的患者术后总生存及无复发生存期较低表达者显著缩短;多因素Cox回归分析显示CUEDC2的表达状态、血清AFP和肿瘤数目是影响肝癌患者术后无复发生存(RFS)及总生存期(OS)的独立危险因素。结论:CUEDC2在多数肝癌组织中有表达,与肿瘤的生长、分化及预后有关;CUEDC2可以作为一个有价值的肝癌预后预测的新指标。     

PLCE1通过调控p53抑制肺腺癌A549细胞凋亡

目的:探讨磷脂酶Cε1(PLCE1)抑制肺腺癌A549细胞凋亡的作用机制。方法:选用人肺腺癌细胞株A549作为研究对象。采用real-time PCR和Western blotting法分别检测PLCE1抑制剂U-73122处理前、后肺腺癌细胞株A549中PLCE1和p53 mRNA和蛋白水平的表达;流式细胞术检测细胞凋亡。结果:肺腺癌细胞株A549高表达PLCE1,低表达p53;抑制PLCE1表达后A549细胞中p53表达上调,细胞凋亡明显增加。结论:PLCE1通过抑制肺腺癌A549细胞株中p53的表达,从而抑制A549细胞凋亡。     

M2-polarized tumor-associated macrophages are associated with poor prognoses resulting from accelerated lymphangiogenesis in lung adenocarcinoma

OBJECTIVES:

Tumor-associated macrophages have been implicated in promoting tumor growth, progression and metastasis. However, the activated phenotype (M1 or M2) of tumor-associated macrophages remains unknown in solid tumors. Therefore, this study examined the density and prognostic significance of M2-polarized tumor-associated macrophages in lung adenocarcinoma.

METHODS:

Tumor specimens from 65 lung adenocarcinoma patients were assessed by ELISA for Th1/Th2 cytokine concentrations. The activated phenotype (M1 or M2) of tumor-associated macrophages was determined utilizing immunofluorescence staining. Additionally, to evaluate lymphangiogenesis, peritumoral lymphatic microvessel density was measured using D2-40. The correlation between tumor-associated macrophage subtype and overall patient survival was analyzed using the Kaplan-Meier method and compared using the log-rank test.

RESULTS:

A shift toward Th2 cytokine expression was detected within lung adenocarcinoma microenvironments. Approximately 79.71±16.27% of tumor-associated macrophages were M2 polarized; the remaining 20.35±5.31% were M1 polarized. The infiltration of M2-polarized macrophages was significantly associated with P-TNM staging and lymph node metastasis. The peritumoral lymphatic microvessel density was significantly higher in the high M2-polarized tumor-associated macrophage group than in the low M2-polarized tumor-associated macrophage group. A significant difference in overall patient survival was detected not only between patients with tumors with high and low macrophage counts but also between patients with tumors with high and low counts of M2-polarized macrophages.

CONCLUSION:

Tumor-associated macrophages in lung adenocarcinoma have an M2-polarized subtype and are associated with poor prognoses, perhaps resulting from accelerated lymphangiogenesis and lymph node metastasis.     

Correlation between EZH2 and CEP55 and lung adenocarcinoma prognosis

Objective

Recently, accumulated evidence indicates that the enhancer of zeste homologue 2 (EZH2) is highly expressed in a wide range of cancer types, including NSCLC. The downstream genes regulated by EZH2 were screened using bioinformatics analysis. This study aimed to analyse the correlation between the downstream genes of EZH2 and the prognosis of lung adenocarcinoma.

巨噬细胞对A549肺泡细胞癌细胞作用的定量酶细胞化学研究

为研究巨噬细胞（ＭΦ）抑制、杀伤肿瘤细胞的机理，我们应用酶细胞化学及形态定量技术观察比较正常及活化ＭΦ分别与Ａ５４９肺泡细胞癌细胞作用后，癌细胞内细胞色素氧化酶（ＣＯ），琥珀酸脱氢酶（ＳＤ），乳酸脱氢酶（ＬＤＨ）及酸性磷酸酶（ＡＣＰ）活性的变化。结果见活化ＭΦ（Ｅ）与癌细胞（Ｔ）比值为１０：１时，癌细胞线粒体的ＣＯ，ＳＤ，及ＬＤＨ活性降低，Ｅ／Ｔ＝２０：１时溶酶体的ＡＣＰ活性增加。提示Ｅ／Ｔ适当时，活化ＭΦ可引起癌细胞线粒体及溶酶体的损伤，影响其酶活性引起细胞呼吸和氧化磷酸化等代谢改变，可能是活化ＭΦ抑制、杀伤癌细胞的机理之一。     

增殖细胞核抗原表达与AgNORs图像分析在判断肺癌预后上的应用

应用抗增殖细胞核抗原（抗ＰＣＮＡ）单克隆抗体，采用Ｓ－Ｐ免疫组化方法和ＡｇＮＯＲｓ染色图像分析，对有确切随访结果的８６例原发性肺癌和１０例肺炎性假瘤进行了研究。结果表明：经ＰＣ－ＮＡ阳性反应计算出的增殖指数（ＰＩ）与图像分析的ＡｇＮＯＲｓ计数及其颗粒总面积间存在着明显的相关性。二者均与肺癌分型有关，并随癌分化程度的增高而减小；与ＴＮＭ分期中的淋巴结（Ｎ）和远隔转移（Ｍ）有关；术后存活５年以上者明显小于３年以内者（Ｐ＜０．０１）。认为ＰＣＮＡ的表达和ＡｇＮＯＲｓ图像分析技术有助于肺癌的分型、分化及预后的判断。     

肺淋巴上皮瘤样癌临床病理特点和预后

目的分析肺淋巴上皮瘤样癌(LELC)的临床病理特点和预后.方法对有长期随访资料的26例肺LELC和84例肺非LELC(33例鳞癌,36例腺癌,6例腺鳞癌和9例大细胞癌)采用Ka-plan-Meier生存曲线和GeneralizedWilcoxon检验法比较两组生存率的差异.结果肺LELC患者经治疗后2年和5年生存率分别为79.9%和53.5%,而肺非LELC患者经治疗后2年和5年生存率为59.5%和39.1%,两组比较差异有显著性意义(P＜0.05).进一步结合组织学类型分析,肺LELC的生存率明显比腺鳞癌、大细胞癌高,且均具有统计学意义(P＜0.01,P＜0.025);但与鳞癌、腺癌的生存率比较,差别无统计学意义(P＞0.05).肿瘤复发和瘤组织的坏死程度是影响肺LELC预后的重要指标.结论肺LELC是一种罕见、独特类型的肺癌,经及时治疗后有较好的预后.     

Correlated low IGF2BP1 and FOXM1 expression predicts a good prognosis in lung adenocarcinoma

IGF2BP1 and FOXM1 are shown to be critical in the regulation of caner progression. However, the prognostic value of IGF2BP1 in lung adenocarcinoma and its relationship with FOXM1 still remains unclear. In this study, the expression and biological significance of both IGF2BP1 and FOXM1 were evaluated in 188 lung adenocarcinoma, at mRNA and protein levels. We showed that mRNA and protein levels of IGF2BP1 and FOXM1 were upregulated in lung adenocarcinoma compared to adjacent non-cancerous tissues. High IGF2BP1 expression was correlated with a poor prognosis for lung adenocarcinoma patients. Moreover, IGF2BP1 expression was positively associated with FOXM1 expression. Meanwhile, the findings indicated that low IGF2BP1 combined with low FOXM1 expression, was negatively correlated with pathological stage and lymph node metastasis, predicted good outcomes for lung adenocarcinoma patients. Additionally, low IGF2BP1 and FOXM1 expression status, is an independent prognostic factor for lung adenocarcinoma after surgical resection. We demonstrate that low IGF2BP1 and FOXM1 expression can serve as a potential factor for the clinical diagnosis and prognosis of lung adenocarcinoma, and targeted inhibition of IGF2BP1 and FOXM1 might be an alternative strategy for the management of lung adenocarcinoma.     

亚硒酸钠对UVB损伤人角质形成细胞的保护作用

目的:研究亚硒酸钠(Na2Se O3)对中波紫外线(UVB)损伤人角质形成细胞的保护作用。方法:培养永生化人角质形成细胞(Ha Ca T细胞),实验分为4组处理:(1)正常对照组;(2)Na2Se O3组:分别加入1 nmol/L、10 nmol/L、50 nmol/L、100 nmol/L、200 nmol/L和1μmol/L的Na2Se O3预孵育24 h;(3)UVB组:300、600和900 J/m2UVB照射;(4)Na2Se O3+UVB组:Na2Se O3预孵育24 h后进行UVB照射。采用MTT法检测细胞增殖活性,采用流式细胞仪检测300 J/m2UVB照射后细胞的凋亡率。结果:(1)UVB组与正常对照组比较,细胞增殖活性显著降低(P0.05),细胞活性与UVB照射剂量呈负相关;(2)Na2Se O3组与正常对照组比较,细胞增殖活性无明显差异;(3)不同浓度Na2Se O3+UVB组与UVB组比较,细胞增殖活性增加,差异显著(P0.05),其中100 nmol/L组促进细胞增殖作用最强;(4)300 J/m2UVB照射后,不同浓度Na2Se O3+UVB组与UVB组比较,凋亡率下降,差异显著(P0.05),其中100 nmol/L组抑制凋亡作用最强。结论:UVB对角质形成细胞有损伤作用,且与照射剂量呈正相关;Na2Se O3具有光保护性能,可减轻UVB辐射损伤人角质形成细胞。     

人胃癌及癌旁组织RNA氧化损伤水平的比较及临床意义

目的:通过检测人胃癌组织及其癌旁组织中的RNA氧化损伤程度,探讨RNA氧化与胃癌发生的相关性。方法:分别利用免疫组化方法和液相-串联质谱(LC-MS/MS)方法对61例胃癌组织及其癌旁组织中8-氧鸟苷(8-oxo Gsn)进行定性和定量分析,并统计分析结果。结果:免疫组化结果检测显示8-oxo Gsn在癌旁组织中含量低,而在胃癌组织中含量明显增高,且棕色染色区域主要集中在肿瘤细胞胞浆位置。质谱检测结果显示胃癌组织中8-oxo Gsn含量较对应癌旁组织高,差异有统计学意义(P0.05)。结论:8-oxo Gsn在胃癌组织中含量增加。RNA氧化损伤可能在胃癌的发生发展过程中起重要作用。