S-1 monotherapy as second line chemotherapy in advanced gastric cancer patients previously treated with cisplatin/infusional fluorouracil

The treatment choice of advanced gastric carcinoma after failure from first-line therapy is quite limited. To evaluate the efficacy and toxicity of S-1 monotherapy in patients with advanced gastric cancer after failure of first line cisplatin and fluorouracil combination (CF). S-1 monotherapy as a second line treatment was given to the patients who had failed to CF combination in SC-101 study. The efficacy and toxicity of S-1 monotherapy were evaluated exploratory. The results indicated that forty-one patients received S-1 as a second line therapy after disease progression. The overall response rate and disease control rate were 14.6% and 41.5%, respectively. The median progression free survival (PFS) was 5.1 months (ange: 2.9~6.2 month). The median overall survival time was 6.4 months. The survival rates at 6 month and 1 year were 56% and 7.3%, respectively. Grade 3/4 adverse events were uncommonly occurred, including anemia (2.4%), neutropenia (2.4%), thrombocytopenia (4.9%) and rash (2.4%). There were no unexpected or life-threatening toxicities. Only one patient experienced dose reduction due to grade 3 rash. In conclusion, S-1 monotherapy provided a mild response rate and overall survival, and a favorable toxicity profile in the second line setting after the first line failure to cisplatin and fluorouracil combination.     

早期检测颅脑损伤患者血清S—100B蛋白含量的临床意义

目的：通过检测颅脑损伤患者血清S-100B蛋白含量，研究S-100B蛋白含量与颅脑损伤严重程度及预后的关系，为诊断、预后评估及治疗提供理论依据。方法：选取30例正常体检者为对照组，取其血清标本检测S-100B蛋白含量。选取颅脑损伤患者60例，分别于伤后早期（2-6h）及伤后第1、2、3、5、7、10天采血，检测血清中S-100B蛋白含量，比较其在伤后不同时间的血清S-100B蛋白含量。结果：颅脑损伤患者伤后血清S-100B蛋白含量与对照组相比，除轻中型组第10天差异无统计学意义外，其余比较差异均有统计学意义（P〈O．05）。GCS〉8分组与GCS≤8分组患者及不同预后组之间血清S-100B蛋白含量差异有统计学意义（P〈0．05）。结论：S-100B蛋白在颅脑损伤的诊断及严重程度的判断中有高度敏感性和特异性，是一种有效的生化指标，能为颅脑损伤的诊断、预后评估及治疗提供理论依据。     

SBHL诱导宫颈癌细胞株ME180凋亡的实验研究

目的 SBHL对人宫颈癌细胞的抗肿瘤作用机制。方法观察SBHL对ME180细胞增殖抑制、观察SBHL诱导ME180细胞凋亡。结果 MTT实验发现SBHL作用ME180细胞24小时后,细胞存活率明显下降,而且随着澳洲茄胺盐酸盐浓度的增加,抑制作用增强;流式细胞仪检测SBHL可引起ME180细胞阻滞于G1期,透射电镜观察细胞超微结构呈现典型的凋亡特征。结论 SBHL可抑制ME180细胞增殖并可诱导细胞发生凋亡。     

长春新碱载体红细胞体内代谢分布的初步研究

目的：初步探讨长春新碱载体红细胞在小鼠体内的分布代谢情况。方法i昆明种小鼠腋窝皮下接种S180肉瘤细胞建立荷瘤小鼠模型，将荷瘤小鼠随机分为长春新碱、长春新碱载药红细胞2组，经尾静脉分别注射长春新碱200ug及长春新碱载药红细胞（浓度1cg／L）。注射后0、1、2、3、4、24、48及72h取小鼠血液、肝脏及肿瘤组织，用高效液相色谱法测定其中药物浓度，计算半衰期。结果：长春新碱进入体内后血浆浓度迅速增高，其代谢速率也很快，48h后完全测不出，半衰期1．53h。长春新碱载药红细胞在血浆中浓度稳定而持久，72h仍可测出，药物半衰期达4．1h，是前者的2．68倍。载药红细胞在肝脏及肿瘤中的浓度和稳定性均高于游离药物，且随着时间延长，这种优势越来越大。结论：载药红细胞延缓药物释放，延长药物作用时间；增强了药物向肝脏及肿瘤的靶向聚集，减少不良反应。为临床肿瘤治疗提供新思路和可行方法。     

Response of reperfusion-salvaged, stunned myocardium to inotropic stimulation

The purpose of this study was to determine whether myocardium salvaged by reperfusion following coronary occlusion could respond to inotropic stimulation by dopamine. Mongrel dogs underwent a 2-hour occlusion of the proximal left anterior descending coronary artery, followed by reperfusion for 5 or 28 hours. Dopamine (5 to 10 micrograms/kg/min) or dextrose was administered 1 hour or 24 hours after the onset of reperfusion. Serial, computer-assisted, two-dimensional echocardiographic determination of percentage of systolic wall thickening (%SWT) and cross-sectional ejection fraction (% delta area) were used to evaluate the response to treatment. Myocardium in the region of central ischemia contracted poorly after 1 hour of reperfusion (mean %SWT = 1.3 +/- 13.3% [mean +/- SD] compared to preocclusion value of 43.6 +/- 18.5%, p less than 0.001) and tended to thin at 24 hours of reperfusion (mean %SWT = -6.0 +/- 12.3%, p less than 0.001). After 1 hour of reperfusion, dopamine produced a greater than fourfold improvement in %SWT within the reperfused zone (to 15.3 +/- 7.3%, p less than 0.05). After 24 hours of reperfusion, dopamine again produced an improvement in %SWT (to 5.8 +/- 12.5%, p less than 0.05). There were no significant changes in %SWT with dextrose infusion. Thus, dopamine stimulates the reperfusion-salvaged but noncontracting (stunned) myocardium to contract as early as 1 hour after reperfusion.     

基于纤维肉瘤荷瘤模型的异黑成熟颗粒对小鼠抗肿瘤作用的研究

目的研究异黑成熟颗粒对S-180荷瘤小鼠的抑制作用。方法 60只小鼠进行S-180实体瘤造模后随机分为异黑高剂量组、异黑中剂量组、异黑低剂量组、环磷酰胺组、肿瘤模型组和正常对照组,连续灌胃给药10d,测定以下指标:小鼠抑瘤率、脾指数、胸腺指数、肝脏指数和血清TNF-α、IFN-γ及IL-2水平,S-180荷瘤小鼠脾脏T淋巴细胞增殖功能,异黑成熟颗粒对S-180实体瘤的病理学改变,异黑成熟颗粒对S-180实体瘤小鼠日常活动的影响。结果异黑成熟颗粒高、中、低剂量组和环磷酰胺组的抑瘤率分别为61.55%,65.90%,38.01%和80.38%,均具有明显的抑瘤作用(P<0.05)。给予异黑成熟颗粒后血清中TNF-α、IFN-γ及IL-2含量显著增高(P<0.05)。异黑成熟颗粒可显著促进S-180荷瘤小鼠脾脏T淋巴细胞的增殖。结论异黑成熟颗粒对S-180实体瘤有明显的抑制作用。     

替吉奥与顺铂分别联合吉西他滨治疗进展期胰腺癌疗效比较

目的：评价吉西他滨联合替吉奥与吉西他滨联合顺铂治疗局部晚期或转移性胰腺癌临床疗效。方法回顾性分析2010年2月至2012年12月收治的42例不可切除的胰腺癌,分为吉西他滨+顺铂（GP组）18例与吉西他滨+替吉奥（GS组）24例。GP组：吉西他滨1000mg/m2,第1,8d,顺铂30mg/d,第4-6d,每3周重复;GS组：吉西他滨1000mg/m2,第1,8d,替吉奥根据体表面积,予80-120mg/d,口服,第1-14d,每3周重复。结果 GS组和GP组总有效率(CR+PR)分别为37.3%和33.3%(P>0.05)。 GS组和GP组6个月生存率分别为79.2%和83.3%(P>0.05),1年生存率分别为29.2%和22.2%(P>0.05)。中位无疾病进展时间分别为5.5个月和4.5个月(P<0.05),中位总生存时间分别为8.8个月和8.15个月(P>0.05)。两种方案毒副反应：GP组恶心、呕吐发生率明显高于GS组(83.3%vs 45.8%,P=0.024),差异有统计学意义。结论吉西他滨联合替吉奥或联合顺铂治疗晚期胰腺癌安全有效,在延长生存期方面也显示出一定的优势,但差异无统计学意义。     

紫杉醇联合替吉奥胶囊治疗晚期食管癌的临床疗效观察

目的观察紫杉醇联合替吉奥胶囊治疗晚期食管癌的临床疗效和不良反应。方法选择37例晚期食管癌患者,予紫杉醇175 mg/m2,d1,静脉滴注3 h;替吉奥胶囊服用剂量按体表面积<1.25 m2者剂量40毫克/次;体表面积1.25~1.5 m2者剂量50毫克/次;体表面积>1.5 m2者剂量60毫克/次;均每日2次,早晚餐后口服,连服14 d,21 d为1个周期。结果疗效可评价患者36例,其中完全缓解(CR)1例,部分缓解(PR)14例,病情稳定(SD)11例,病情进展(PD)10例,有效率(CR+PR)为41.7%;疾病控制率(CR+PR+SD)为72.2%;中位疾病进展时间(m TTP)及中位生存时间分别为7.4个月、10.6个月,1年生存率为36.1%。化疗的主要不良反应为脱发及骨髓抑制,其中Ⅲ~Ⅳ度中性粒细胞减少发生率为16.7%。结论紫杉醇联合替吉奥胶囊治疗晚期食管癌疗效肯定,且耐受性较好。