血清IL-6和胃蛋白酶原Ⅰ/Ⅱ比值对老年胃癌患者预后评估的价值

目的探究老年胃癌患者术前血清白细胞介素6 (IL-6)、胃蛋白酶原(PG)Ⅰ、Ⅱ及PG-Ⅰ/Ⅱ比值在患者预后评估中的意义。方法选择2016年1月—2017年1月南通大学附属海安医院收治的101例外科手术治疗的老年胃癌患者为研究对象。收集患者的临床病理资料,检测血清IL-6和PG-Ⅰ/Ⅱ水平。以全因死亡为随访终点,使用Kaplan-Meier曲线明确患者预后与各指标间的关系。结果受试者工作特征曲线提示,IL-6、PG-Ⅰ和PG-Ⅰ/Ⅱ比值在最佳切割值为10.23pg/mL、30.65μg/L和2.44时,可评估患者的预后,而PG-Ⅱ则无法评估患者的预后。与IL-6≤10.23pg/mL组相比,IL-6> 10.23pg/mL组的肿瘤细胞分化更差、TNM分期Ⅲ期比例明显升高。Kaplan-Meier曲线结果表明,IL-6> 10.23pg/mL组的中位生存期显著短于IL-6≤10.23pg/mL组(28个月vs47个月,P<0.001);PG-Ⅰ≤30.65μg/L组的中位生存期显著短于PG-Ⅰ>30.65μg/L组(34个月vs49个月,P=0.008);PG-Ⅰ/Ⅱ≤2.44组的中位生存期显著短于PG-Ⅰ/Ⅱ> 2.44组(29个月vs56个月,P=0.02)。多因素Cox回归分析表明,肿瘤分化程度、TNM分期、IL-6及PG-Ⅰ/Ⅱ比值是影响患者生存率的独立危险因素。结论术前检测IL-6及PG-Ⅰ/Ⅱ比值有助于评估老年胃癌患者的预后。     

正常人及胃癌患者胃蛋白酶原C基因多态性研究

以ＰＧＣ３０１为探讨，对１０例胃癌组织及１１例正常人体组织基因组ＤＮＡ中胃蛋白酶原Ｃ基因的ＥｃｏＲ Ｉ限制性片段长度多态性作了观察分析。发现在正常人体有三种常见等位片段，分别为２０ｋｂ、５．７ｋｂ及３．６ｋｂ；一种稀有片段，３．５ｋｂ。在胃癌患者，未发现与正常人体不同的等位片段。但是，稀有片段及稀有杂交带型的出现频率高于正常组。这一结果对深入探讨胃蛋白酶原Ｃ基因稀有片段及稀有杂交带型对胃癌的诊断价     

胃癌高系家族成员胃蛋白酶原C基因多态性及其诊断意义的探讨

采用限制性酶切片段长度多态性分析法，检测在胃癌高发区庄河检出的１９例胃癌高系家族成员胃蛋白酶原Ｃ基因多态性，发现三种常见片段及一种稀有片段。对其中４例携带稀有片段的受检者进行了胃镜追踪观察，２．５年后发现１例早期胃癌。本文对此作了初步探讨。     

Differential expression of pepsinogen isozymogens in a patient with Barrett esophagus

The pepsinogen A (PGA) isozymogens in the gastric mucosa and Barrett epithelium of a female patient with Barrett esophagus were studied on different occasions during a 3-year period by electrophoretic analysis of in vivo steady-state pepsinogen in biopsies by activity staining in combination with variant specific monoclonal antibodies and of de novo synthesized pepsinogen by autoradiography. In Barrett epithelium only one (Pg3) or two (Pg3 and Pg5) primary PGA gene products were detected, whereas in gastric mucosal biopsies three (Pg3, Pg4 and Pg5) primary gene products were demonstrated on all occasions. These differences strongly suggest differential expression/activation of individual gene numbers in the PGA gene cluster in Barrett esophagus and are in line with the preneoplastic nature of this condition. The mechanism behind this deregulation is currently under investigation by cell biology and molecular genetic techniques.     

Early and advanced gastric cancer during follow-up of apparently benign gastric ulcer: significance of the presence of epithelial dysplasia

One hundred and forty-four patients with apparently benign gastric ulcer were endoscopically followed up in order to evaluate the outcome of the lesion. Particular attention was given to: (a) detect possible delay in diagnosing gastric cancer; (b) ascertain the frequency of association with epithelial dysplasia; (c) establish the role of markers, such as serum pepsinogen group I (PGI), and gastric juice CEA in predicting gastric ulcer evolution. Endoscopic and bioptic check-ups were carried out during the first year at 3, 6 and 12 months after endoscopic healing of the ulcer, and then at every symptomatic recurrence. Ten patients (6.9%) were found to present histological evidence of malignancy (within 3 months in six cases, between 6 and 12 months in three cases, and after 41 months in the rest). Four cases were early gastric cancers, and six had shown dysplastic changes of the mucosa at the edge or scar of the ulcer. Serum PGI levels were not significantly different in gastric cancer patients, while gastric juice CEA levels were sharply increased compared to those of gastric ulcer patients: nine out of ten patients had values above normal range. These data suggest that: (a) there may be some delay in diagnosing gastric carcinoma, and gastric ulcer patients should be controlled routinely more than once; (b) the presence of dysplasia indicates the need for prolonged follow-up, because of the high risk of association with or evolution into gastric cancer, and because of the higher number of early gastric cancer detections that this protocol allows; (c) further support in monitoring patients "at risk" may be afforded by gastric juice CEA determination.     

胃蛋白酶原及其亚群对胃癌早期诊断及预后判断的意义

目的探讨血清胃蛋白酶原(PG)及其亚群(PGⅠ、PGⅡ)与胃癌病人早期诊断及术后复发的关系。方法采用放射免疫分析法测定胃癌病人及正常对照组血清PGⅠ、PGⅡ含量,并对两者联合检测进行综合评价。结果胃癌病人血清PGⅠ含量及PGⅠ/PGⅡ比值明显低于正常对照组,早期胃癌即表现有显著性差异,而进展期胃癌则下降更显著(t′=11.84~14.95,t=15.82~40.27,P<0.01)。胃癌病人根治性手术后血清PGⅠ及PGⅡ的含量明显下降,根治性全胃切除术后病人血清胃蛋白酶原含量很低,胃癌复发后PGⅠ及PGⅡ均明显升高(t′=4.60~15.51,t=4.72,P<0.01)。结论监测PGⅠ及PGⅠ/PGⅡ比值变化对早期胃癌筛选有一定意义,可用于胃癌术后复发的监测。     

幽门螺杆菌相关性胃疾病血清PG测定及意义

为研究血清胃蛋白酶原 (pepsinogen,PG)亚群 (PG 、PG )含量与幽门螺杆菌 (Helicobacter pylori,Hp)相关性胃疾病的关系 ,选取体检健康者 3 0例 (对照组 )和疾病组 14 4例 (实验组 ) ,其中慢性浅表性胃炎 47例 ,慢性萎缩性胃炎 3 5例 ,胃溃疡 40例 ,胃癌 2 2例。采用快速尿素酶试验 (RUT)及病理切片法检测幽门螺杆菌感染 ,采用放射免疫法 (RIA)检测血清胃蛋白酶原含量 ,旨在研究胃相关性疾病患者以上指标的变化情况。结果显示 ,RUT法检测幽门螺杆菌阳性率 (79.17% )高于病理切片法 (4 0 .2 8% ) ,两者有显著性差异 (P<0 .0 1) ;幽门螺杆菌在慢性浅表性胃炎、慢性萎缩性胃炎及胃溃疡患者中有较高的阳性率 ,胃癌组患者 Hp感染率低于胃炎及胃溃疡组 ;在血清 PG含量检测中 ,胃癌组低于对照组、浅表性胃炎组及胃溃疡组 (P<0 .0 1) ,胃癌组 PG /PG 比值低于对照组及浅表性胃炎组 (P<0 .0 1) ,Hp(+ )组 PG 、PG 含量均高于 Hp(-)组。