蟾酥注射液对小鼠S180和人结肠癌HT-29裸鼠移植性肿瘤的影响

目的研究蟾酥注射液对小鼠移植性肿瘤 S180和人结肠癌 HT-29裸鼠移植性肿瘤的抑制作用.方法分别用小鼠 S180和人结肠癌 HT-29裸鼠两种荷瘤小鼠模型,观察药物对上述肿瘤的抑瘤作用,并镜下观察后者细胞凋亡情况.结果与荷瘤阴性对照组比较,蟾酥注射液各剂量组对小鼠 S180抑瘤率( IR)为 19.1%～38.2%(P<0.05),呈量效关系;而对人结肠癌 HT-29裸鼠移植性肿瘤的 IR为 9.5%～15.8%(P>0.05),也呈量效关系,但差异均未见统计学意义;环磷酰胺则能显著抑制小鼠 S180和 HT-29细胞裸鼠移植性肿瘤的生长( IR分别为70.7%和 67.1%, P<0.01),镜检可见其有显著促进肿瘤细胞凋亡作用;未发现实验药物出现明显的毒副作用.结论该实验所用的蟾酥注射液,对小鼠 S180有抑制作用,而对人结肠癌 HT-29裸鼠移植性肿瘤,则作用不明显,表明不同类型的肿瘤对其敏感性不同.     

神经节细胞胶质瘤恶变及其差异表达基因分析

目的探讨神经节细胞胶质瘤恶性进展的分子变化,为进一步研究分子病因奠定基础。方法取同一患者不断恶化的3次手术标本,行cDNA微阵列检测,分析在不同阶段持续存在的差异表达基因。结果初发(WHO II级)、复发(WHO III级)和再发(WHO IV级)的标本与正常脑组织相比,差异表达基因共19条,其中下调者16条,上调者3条。在下调的基因中,功能明确者有抑制RAF1/MEK/ERKs激酶通路激活的磷酸酰乙醇胺结合蛋白,抑制肿瘤血管增生、侵袭,调控细胞凋亡的碳酰还原酶;抑制c-myc基因表达的肺库否样因子;参与人DNA切除修复的多聚酶ε。结论神经节细胞胶质瘤恶变过程中持续存在的分子变化,以抑制肿瘤增殖基因表达下调为主,其中RAF激酶抑制蛋白、DNA多聚酶ε和碳酰还原酶是参与细胞信号传导和DNA损伤修复等具重要功能的基因,值得进一步研究。     

冰艾油治疗化脓性中耳炎876例

笔者于1995年实习期间偶得一秘方,自命名为“冰艾油”,经过10多年临床验证,治疗急慢性化脓性中耳炎确有奇效,现将其整理总结如下。     

Differential etiology of posttraumatic stress disorder with conduct disorder and major depression in male veterans.

BACKGROUND: Epidemiologic studies reveal that posttraumatic stress disorder (PTSD) is highly comorbid with both conduct disorder and major depression in men. The genetic and environmental etiology of this comorbidity has not been examined. METHODS: Data were analyzed from 6744 middle-aged male-male monozygotic and dizygotic twins from the Vietnam Era Twin Registry. Conduct disorder, major depression, and PTSD were assessed via telephone interview using the Diagnostic Interview Schedule for the DSM-III-R in 1992. Structural equation modeling was used to estimate additive genetic, shared environmental, and individual-specific environmental effects common and specific to conduct disorder, major depression, and PTSD. RESULTS: The association between conduct disorder and PTSD was explained primarily by common shared environmental influences; these explained 10% (95% confidence interval: 6%-17%) of the variance in PTSD. The association between major depression and PTSD was largely explained by common genetic influences; these explained 19% (95% confidence interval: 11%-26%) of the variance in PTSD. CONCLUSIONS: Our findings suggest that different etiologic mechanisms explain the association of conduct disorder and major depression with PTSD in male veterans. If replicated in other populations, results suggest research aimed at identifying specific genetic and environmental factors that influence PTSD may benefit from starting with those that have been more consistently and strongly associated with major depression and conduct disorder.     

老年急性心肌梗塞病人PTF_(v1)的分析

本文分析91例60岁以上急性心肌梗塞(AMI)病人的心电图 V_1导联上 P 波的终末电势(PTFv_1)由 V_1导联的负向 P 波深度×宽度求得,单位为 mm·s。正常值≥-0.03mm·s,本组 PTFv_1异常者共44例,占48.4%,与 AMI 病人的年龄、梗塞部位、面积扩大及泵衰竭的增重有很大关系。经过治疗,随着病情的好转 PTFv_1可恢复正常。因此,PTFv_1对老年 AMI 的预后判断具有很大的意义。     

肠外营养对呼吸功能不全患者的影响

从加强医疗病房的重危患餐巾选取因呼吸衰竭而给予呼吸机支持的患者40例,随机分为A组20例进行肠外营养(parenteral nutrition,PN)治疗,B组20例未行PN治疗。对通气/换气功能各指标进行分析,结果两组患者的呼吸频率、pH、PaO_2、PaCO_2及HCO_3~-无明显差异;A组氧分压与吸入气氧浓度比值轻度降低,而肺泡-动脉氧压差及肺内分流明显升高。提示PN中的脂肪乳和高糖可能是导致呼吸功能改变的重要因素。     

选择性髂内动脉结扎与栓塞对盆腔血供的影响

目的：旨在探讨选择性髂内动脉结扎与栓塞两种方法对盆腔血供的影响。方法：将两组犬在膀胱上动脉分支以下之髂内动脉分别行结扎与栓塞，对比观察两组膀胱创面出血、盆腔动脉造影及盆腔脏器组织学变化，以确定其盆腔脏器的血供情况。结果：①结扎组膀胱创面出血明显大于栓塞组；②结扎组髂内动脉侧支循环建立时间明显早于且数目多于栓塞组；③两组盆腔脏器均未见缺血坏死。结论：栓塞组阻断髂内动脉侧支循环的数目多于结扎组，故对盆腔血供的影响大于结扎组。避免髂内动脉阻断范围过广可减少盆腔脏器缺血坏死的机会。