大葱提取物对人胃癌细胞裸鼠皮下移植瘤生长的抑制作用研究

目的观察大葱提取物大葱油对人胃癌MGC-803细胞裸鼠皮下移植瘤生长的抑制作用。方法建立人胃癌MGC-803细胞裸鼠皮下移植瘤模型,实验组腹腔注射10g/L大葱油注射液0.5 mL/次,对照组腹腔注射20 g/L吐温-80 0.5 mL/次,观察各组移植瘤生长情况,计算肿瘤生长抑制率及DNA图像分析DNA指数及平均DNA质量。结果实验组肿瘤生长抑制率为36.07%,肿瘤DNA指数和平均DNA质量下降。结论大葱提取物大葱油对人胃癌移植瘤生长具有抑制作用,抑制肿瘤细胞DNA指数及平均DNA质量可能是其抗肿瘤的机制。     

基于阶段改变模式的健康教育对糖尿病患者行为改变的影响

目的 探讨基于行为分阶段改变模式的健康教育对2型糖尿病患者自我管理行为的影响.方法 将70例2型糖尿病患者随机分为试验组和对照组各35例,试验组应用行为分阶段改变模式进行健康教育,对照组应用常规健康教育.应用2型糖尿病自我管理行为量表（Type 2 Diabets Self-Care Scale,2-DSCS）分别于干预前、干预后30d和90d对2组患者进行测评.同时对2组患者干预前后糖化血红蛋白达标率、低血糖发生率进行评价.结果 干预后30d和90d试验组患者饮食控制、规律锻炼、血糖监测、足部护理和预防及处理高低血糖得分均高于对照组（P＜0.05）.试验组患者糖化血红蛋白达标率明显高于对照组（P＜0.05）,而低血糖发生率明显低于对照组（P＜0.05）.结论 与常规2型糖尿病健康教育相比,以分阶段改变模式为依据制定的健康教育方案,能显著改善2型糖尿病患者的自我管理行为.     

木果楝内酯抑制人乳腺癌脑转移细胞增殖活性的研究

目的研究3种木果楝内酯化合物（Xylocarpin H,Xylogranatin C和Xylomexicanin A）抑制人乳腺癌脑转移细胞增殖的作用及分子机制。方法 3种木果楝内酯化合物分别处理人乳腺癌脑转移（KT）细胞,MTT比色法检测其对KT细胞增殖活性的抑制作用;采用Western blot技术检测细胞凋亡相关蛋白的表达变化。结果 MTT比色法显示Xylogranatin C对KT细胞增殖有较强的抑制作用,呈浓度依赖性;Western blot结果显示Xylogranatin C处理的KT细胞p53、Bax和Caspase-3蛋白表达增强,与对照组比较有统计学意义。结论木果楝内酯化合物Xylogranatin C具有较强的抑制人乳腺癌脑转移细胞增殖的作用,机制与诱导肿瘤细胞凋亡相关。     

Phase I trial of escalating-dose cisplatin with 5-fluorouracil and concurrent radiotherapy in Chinese patients with esophageal cancer

We defined the maximum-tolerated dose (MTD) of chemoradiotherapy (cisplatin (CDDP) with 5-fluorouracil (5-FU) and concurrent chemoradiotherapy) for Chinese patients with esophageal cancer. Twenty-one previously untreated patients with primary esophageal cancer were entered into this study. Escalating doses of CDDP with 5-FU were administered in a modified Fibonacci sequence, with concurrent conventional fractionation radiotherapy (CFR) of 60 Gy or 50 Gy. The starting doses were CDDP 37.5 mg/m2 on day 1, and 5-FU 500 mg/m2 on days 1-5, respectively. The regimen was repeated 4 times every 28 days. If no dose-limiting toxicity (DLT) was observed, the next dose level was applied. The procedures were repeated until DLT appeared. The MTD was declared to be 1 dose level below the level at which DLT appeared. DLT was grade 3 radiation-induced esophagitis at a dose level of CDDP 60 mg/m2 with 5-FU 700 mg/m2 and concurrent 60 Gy CFR. MTD was defined as CDDP 52.5 mg/m2 with 5-FU 700 mg/m2 and concurrent 50 Gy CFR. The MTD of CDDP with 5-FU and in concurrent chemoradiotherapy for Chinese patients with esophageal cancer is CDDP 52.5 mg/m2 on day 1 and 5FU 700 mg/m2 on days 1-5, repeated 4 times every 28 days, and concurrent 50 Gy CFR. Further evaluation of this regimen in a prospective phase II trial is ongoing.     

Influence of Tirofiban maintenance duration on patients with acute myocardial infarction treated by percutaneous coronary intervention

ObjectiveTo evaluate the efficacy and short term prognosis of Tirofiban in different treatment duration in patients with acute ST segment elevation myocardial infarction (STEMI) and percutaneous coronary intervention (PCI) combined with intracoronary injection.MethodsA total of 125 patients with acute STEMI were enrolled in this study. They were randomly divided into two groups: control group (n = 61) and Tirofiban group (n = 64). The Tirofiban was used by intracoronary and intravenous administration in Tirofiban group which was randomly divided into three sub-groups according to the duration of Tirofiban by persistent intravenous injection for 12 hours, 24 hours or 36 hours. Thrombolysis in myocardial infarction flow and myocardial perfusion grades were recorded immediately after PCI. The adverse cardiac events and cardiac death within 180 days of PCI, and the adverse effects (hemorrhage and thrombocytopenia) were compared between the two groups and within Tirofiban sub-groups.ResultsGrade 3 in myocardial perfusion was significantly better in Tirofiban group than control group (85.94% vs. 72.13%, P = 0.03) after PCI. There was one cardiac death in control group in 180 days after PCI. The adverse cardiac event rates between two groups was significant difference (16 patients in control group and only 8 in Tirofiban group, P = 0.047). There was no significant difference in incidence of hemorrhage complications and platelet counts between two groups. Nevertheless, hemorrhage complications in the 12- and 24-hour subgroups were less than 36-hour subgroup (P = 0.01).ConclusionsIntravenous Tirofiban treatment reduced the adverse cardiac events and improved short term prognosis without increasing the adverse reactions of the drugs in patients undergoing PCI. The less rate of hemorrhage complication can be achieved in short-duration of Tirofiban by intravenous injection after PCI.     

阳性淋巴结对数比在胸段食管鳞癌患者长期预后中的预测作用

目的评价阳性淋巴结对数比(LODDS)在预测不同胸段食管鳞癌患者长期预后中的作用。方法回顾性分析731例食管鳞癌根治术后患者临床资料,分析LODDS在全组患者、术后淋巴结阴性患者和术中清扫淋巴结数目<12枚患者中预测预后的价值。结果LODDS与阳性淋巴结个数和术中淋巴结清扫数目均显著相关(r=0.696、-0.530,均P=0.000)。ROC曲线分析结果显示LODDS最佳截点值为-1.028。多因素分析结果显示患者性别、年龄、食管病变部位、pT分期、阳性淋巴结个数和LODDS值为全组患者生存和术中淋巴结清扫数目≥12枚患者OS的独立影响因素(P<0.05);患者性别、年龄、食管病变部位、pT分期和LODDS值为术后淋巴结阴性患者生存的独立影响因素(P<0.05),而pT分期和LODDS值为术中淋巴结清扫数目<12枚患者OS的独立影响因素(P<0.05)。结论LODDS可以作为不同胸段食管鳞癌根治术后患者的独立性预后指标。     

盐酸曲美他嗪联合阿托伐他汀对不稳定型心绞痛患者PCI治疗围手术期临床效果研究

目的 探讨盐酸曲美他嗪联合阿托伐他汀对于不稳定心绞痛患者经皮冠状动脉介入治疗围手术期的临床效果。方法将178例经皮冠状动脉介入治疗不稳定心绞痛患者均分为两组,每组89例,对照组采用阿托伐他汀进行治疗,观察组患者采用阿托伐他汀联合曲美他嗪进行治疗。比较两组患者治疗前后的体内炎症因子(INF,Hs-CRP,IL-40)变化,IL-40水平变化以及血脂(TC、TG、LDL-C、HDL-c)水平变化,并比较两组患者心脏不良事件的发生情况及临床总有效率。结果与治疗前比较,两组患者的TC、TG、LDL-C水平均明显降低,HDL-c水平均明显升高,且观察组变化更明显。治疗后,与对照组比较,观察组患者体内的干扰素(TNF)-α、INF-γ和Hs-CRP均明显降低,IL-40明显增高;总有效率分别是69.7%和86.5%,心脏不良事件发生率明显降低(P均＜0.05)。结论曲美他嗪联合阿托伐他汀在不稳定型心绞痛患者经皮冠状动脉介入治疗围手术期临床效果显著,且心脏不良事件发生率更低,可能与两药联合明显改善患者体内的炎症水平和血脂水平有关。     

乙状结肠癌疝入右侧腹股沟致难复性斜疝1例

报道乙状结肠癌疝入右侧腹股沟致难复性斜疝1例。患者因发现右侧腹股沟肿物60余年、进行性增大3年、疼痛半个月入院。入院查腹部CT:右侧腹股沟区可见直肠、乙状结肠疝入,乙状结肠壁增厚。查电子结肠镜及病理诊断提示:乙状结癌。初步诊断:右侧腹股沟乙状结肠癌难复性斜疝。行腹腔镜探查中转开腹根治性乙状结肠切除,降结肠、直肠端端吻合+右侧腹股沟疝修补术。患者术后顺利出院。     

芹菜素抑制蛋白激酶B活性诱导人卵巢癌细胞凋亡的机制研究

目的探讨芹菜素通过抑制蛋白激酶B活性诱导人卵巢癌细胞凋亡的作用机制。方法采用细胞形态学观察、DNA ladder、聚丙烯酰胺凝胶电泳检测Caspasse-3,Akt,磷酸化Akt,Bad及磷酸化Bad蛋白表达并测定Akt激酶活性。结果芹菜素明显抑制卵巢癌细胞的生长;DNA琼脂糖凝胶电泳检测到典型的DNA梯形条带;Western blotting方法检测到Caspase-3的活性片段,并呈明显的时间依赖关系;芹菜素可以时间依赖方式抑制与细胞增殖相关的Akt及Akt下游促凋亡蛋白Bad的磷酸化,但对总Akt及总Bad蛋白的表达无影响。结论芹菜素通过抑制Akt活性能诱导人卵巢癌细胞发生凋亡。