芪苈强心胶囊治疗慢性心力衰竭的疗效观察

【目的】探讨芪苈强心胶囊对慢性收缩性心力衰竭患者的治疗作用和安全性。【方法】73例慢性收缩性心力衰竭患者随机分为A组（观察组37例采用芪苈强心胶囊治疗）和B组（对照组36例地高辛治疗）;12周后进行心功能疗效,超声心动图指标观察,并评估其安全性。【结果】心功能疗效：A组总有效率为94．59％,B组总有效率为75．00％,A组疗效优于B组（ P ＜0．05）。超声心动图指标：两组SV、CO、LVEF、LVD治疗后较治疗前均有改善（ P＜0．01）,A组LVEF、LVD的改善优于B组（ P ＜0．01）。【结论】芪苈强心胶囊治疗慢性收缩性心力衰竭疗效确切,使用安全。     

An unusual karyotype in preleukemia

A case of a myeloproliferative disorder classified as preleukemia is described in which the patient developed a single, complicated, abnormal karyotype in 100% of the bone marrow cells (45,XY,?2,?5,?7,?8,?11,?12,?13,?14,+(2;5),+t(11;12),+t(16;17),+17, plus three or four dicentric markers). The possible significance of these unusual, if not unique, chromosome changes is discussed in relation to hematologic and clinical findings and with particular reference to the existing nonrandom patterns of chromosome changes in myeloproliferative disorders and acute nonlymphoblastic leukemias.     

The H current blocker ZD7288 decreases epileptiform hyperexcitability in the rat neocortex by depressing synaptic transmission

Neurons respond to intracellular injection of hyperpolarizing current pulses by generating depolarizing sags contributed by a cation current termed Ih. Ih modulates neuron excitability and rhythmicity. It is, however, unclear whether the net effect of changing Ih leads to facilitation or depression of cortical epileptiform activity. Here, we addressed this issue by using field and intracellular recordings to study the effects of ZD7288 (10-100 microM), a bradycardic agent known to abolish Ih, on the epileptiform discharges (duration = 2.5 +/- 0.3 s, mean +/- SEM; interval of occurrence = 34.2 +/- 3.3 s, n = 30 slices) induced in rat neocortical slices by 4-aminopyridine and GABA receptor antagonists. ZD7288 abolished the depolarizing sags seen during injection of intracellular hyperpolarizing current pulses while increasing resting membrane potential and apparent input resistance. These effects, which were fully established with 10 microM ZD7288, were associated with a dose-dependent decrease in the occurrence of spontaneous epileptiform events and a reduction in their duration (the latter change occurring at doses > 20 microM). ZD7288 also caused a dose-dependent decrease of background postsynaptic potentials. Finally, ZD7288 could depress epileptiform activity during Cs+ pre-treatment, a procedure known to block Ih. These data indicate that ZD7288 hampers neocortical epileptiform synchronization, but also suggest that most of this action reflects the ability of ZD7288 to decrease synaptic transmission.     

Obstructive complications of the Nissen fundoplication

The obstructive complications of the Nissen fundoplication can be devastating. They are much more easily prevented than treated. The technical considerations in avoiding these complications are conceptually simple. The fundoplication should be done over a large intraesophageal stent. A no. 50 or 60 French dilator is appropriate and, in addition, the fundoplication should be left loose. If the fundoplication is to be left in the chest, the hiatus must be widely enlarged so that there is not the slightest hint of obstruction at the level of the diagphragm. Care must be taken in this case to approximate stomach to diaphragm. The Nissen fundoplication should be carried out using heavy sutures with generous bites of the stomach on both sides as well as bites of the esophageal wall and perhaps also the proximal stomach. If careful attention is paid to these technical details, the obstructive complications of the Nissen fundoplication should be eliminated.     

盐酸川芎嗪注射液治疗慢性肺源性心脏病合并心力衰竭的临床疗效观察

[目的]探讨盐酸川芎嗪注射液治疗慢性肺源性心脏病合并心衰竭的临床疗效.[方法]本院治疗的慢性肺源性心脏病合并心力衰竭患者112例,随机分为观察组和对照组.对照组采用西医常规治疗方案进行治疗,观察组在对照组基础上联合应用盐酸川芎嗪注射液进行治疗,观察比较两组的临床治疗效果.[结果]观察组治疗后总有效率为92.86％,明显高于对照组(76.79％),且两组相比较差异有显著性(P＜0.05).两组治疗后与治疗前比较,氧分压(PaO2)升高,二氧化碳分压(PaCO2)下降,且差异有显著性(P＜0.05).观察组治疗后PaO2升高及PaCO2下降更为明显,与对照组治疗后比较差异有显著性(P＜0.05).观察组发生不良反应1例,不良反应发生率为1.79％;对照组未发生不良反应,两组不良反应发生情况比较差异无显著性(P＞0.05).[结论]采用盐酸川芎嗪注射液联合西医常规治疗方案治疗慢性肺源性心脏病合并心衰竭临床疗效优于西医常规治疗,且能够有效改善组织缺氧状态,值得在临床上大力推广使用.     

Chromosome damage and sister chromatid exchanges in lymphocyte cultures from patients with two primary cancers

Sister chromatid exchanges (SCEs) and chromosome damage were scored in lymphocyte cultures from 11 patients with two or more primary cancers and were compared with normal controls. None of the patients had a constitutional chromosome anomaly, but six showed evidence of chromosome instability, which could not be accounted for by treatment, expressed either as elevated SCE frequency or increased nonspecific chromosome damage and chromosome loss. Chromosome damage included major rearrangements as well as deletions and gaps. The possibility of common mechanisms in chromosome instability leading to susceptibility to a heterogeneous group of primary cancers is discussed.     

ZD6474对肝癌HepG2细胞的抑制作用

目的探讨ZD6474对肝癌细胞HepG2的杀伤作用及作用机制。方法甲基噻唑基四唑实验(MTT法)测定ZD6474对HepG2细胞的增殖抑制;通过流式细胞仪检测细胞周期变化。结果 ZD6474对HepG2细胞有明显的增殖抑制作用(P<0.001)。ZD6474导致肝癌细胞发生G_0/G_1期阻滞。结论 ZD6474能显著抑制肝癌HepG2细胞的体外增殖,可能与导致肝癌细胞G_0/G_1期阻滞相关。     

中药内服外敷对慢性骨髓炎新生血管的调控机制的探讨

目的 观察中药内服外敷对慢性骨髓炎治疗的作用.方法 建立慢性骨髓炎实验动物模型再清创,随机分为两组（抗生素组为对照组,抗生素加中药组为观察组）,分别干预10 d后取窦道口周围组织行病理切片观测新生微血管,用ELISA法检测EVGF的表达.结果 抗生素加中药组的VEGF的表达及窦道口周围血管积分较抗生素组明显升高[（47.48±3.22）μg/ml vs（28.26±2.61）μg/ml,P＜0.01;8.03±1.73 vs 5.17±2.89,P＜0.05].结论 中药内服外敷可以提高VEGF的表达和窦道口周围组织内毛细血管数量,从而促进慢性骨髓炎的愈合.