1-乙基-6-氟-1,4-二氢-4-氧代-7-(4-芳酰硫代氨甲酰基-1-哌嗪基)-3-喹啉羧酸的合成及抗菌作用

Thirteen new 1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(4-aroyl-thiocarbamoyl- 1 piperazinyl)-3-quinoline carboxylic acids were prepared, Their structures were characterized by elemental analysis, IR, HNMR and MS spectra.Preliminary pharmacological tests indicated that some of compounds Ia～m possess strong inhibiting activity against Escherichia coli, Bacillus subtilis and Proteus at concentration of 100 μg/ml.     

卫生事业的性质、地位与作用的讨论

卫生事业的性质、地位与作用的讨论彭瑞骢，李东方（北京医科大学１０００８３）世界银行１９９３年报告中指出中国以全球卫生经费的１％较好地解决了全球２２％人口的卫生保健问题，效果是好的。最近第２版牛津公共卫生教科书上介绍了英国、美国、日本及中国的卫生工作是...     

甲氰咪胍致昏迷1例

甲氰咪胍现临床广泛应用于治疗消化性溃疡，对胃酸分泌、组织胺、促胃液素等的分泌均有强大的抑制作用，对急性胃出血也有较好的止血作用。但有关副作用的报道也逐年增多。现将甲氰咪胍致昏迷1例报告如下。     

地塞米松对布比卡因诱导小鼠神经元毒性的影响

Objective To investigate the effect of dexamethasone on the toxicity of bupivacaine in murine neurons.Methods Murine neuroblastoma cell line N2a was obtained from ATCC cell bank (USA). The cells were cultured in 10% fetal cow serum/MEM culture medium and divided into 4 groups voup I control (Con); group II bupivacaine ( Bup); group Ⅲ dexamethasone (Dex) and group IV Dex + Bup. The culture medium contained bupivacaine 900 μmol/L in group Bup and dexamethasone 1 μmol/L in group Dex respectively. In group Dex + Bup ( IV ) Bup was added to the culture medium with a final concentration of 900 μmol/L at 12 h after pretreatment with Dex 1 μmol/L. The cells were inoculated in 24 well plates (0.5 ml in each well, 24 wells in each group) and 10 cm culture dishes (7 ml in each dish, 4 dishes in each group). The release rate of LDH was calculated and the morphology of the cells and nucleus condensation (by Hoechst 3334224 fluorescent staining) was detected at 9 h of incubation in 24 well plates. The mitochondrial transmembrane potential (by JC-1 assay) and phosphorylation of Akt and ERKs (by Western blot) were measured at 5 h of incubation in 24 well plates and in culture dishes respectively. ResultsBupivacaine caused severe damage to the N2a cells as evidenced by increase in LDH release and nucleus condensation (apoptosis), dephosphorylation of Akt and ERKs, decrease in mitochondrial transmembrane potential and severe morphological changes. Dexamethasone pretreatment significantly attenuated bupivacaine-induced neurotoxicity. Conclusion Dexamethasone can protect N2a cells from bupivacaine-induced neurotoxicity through stabilization of mitochondrial transmembrane potential and inhibition of dephosphorylation of Akt and ERKs.     

ACEI在慢性肾病中肾保护作用及费用效益关系的研究进展

血管紧张素转换酶抑制剂（ACEI）是20世纪80年代初期开始应用于临床的一类新型抗高血压药物，具有药效强，作用时间长，毒副作用少，依从性好等特点。近年来国外有关ACEI的药理学特点及ACEI在慢性肾病治疗过程中肾保护作用和费用效益比的研究结果表明，在慢性肾病治疗过程中ACEI除了能够预防，减轻和防止肾衰竭进行性加重外，费用效益比显。     

枸杞多糖免疫调节作用的研究

枸杞 (ｌｙｃｉｕｍ .ｂａｒｂａｒｕｍｐｏｌｙｓａｃｃｈａｒｉｄｅｓＬＢＰ)作为延缓衰老的保健食品已有很多报道。其中枸杞多糖是其主要活性成分[1 ] 。本文研究了枸杞多糖对机体非特异性免疫功能及细胞免疫和体液免疫的调节作用。1　材料与方法1.1　枸杞多糖　系从枸杞子中提取的多糖可溶性成分。1.2　主要试剂与仪器　ＲＰＭＩ - 16 4 0美国ＧＩＢＣＯ公司生产 ,胰酶华美生物工程公司 ;酶标仪 (ＭＲ - 70 0型 ) ;二氧化碳培养箱 ;高速冷冻离心机 (日本 )。1.3　实验动物　昆明系小鼠 8Ｗ ,体重 2 5ｇ(± 2 ) ,绵羊肠鼠均由齐齐哈尔医…     

护肝灵口服液对实验性肝损伤的保护作用

护肝灵口服液是由北五味子、柴胡、连翘、金银花等药组成,是在临床验方基础上,经现代制剂工艺加工而成的口服液。临床试用在治疗肝炎方面有一定疗效。我们做了其保肝作用的药效学实验,现将结果报告如下。     

苦碟子抗肿瘤作用的实验性研究

目的 研究苦碟子对动物移植性肿瘤的作用。方法 以小鼠移植性肉瘤180（S180)和艾氏腹水瘤（EAC）为模型，观察苦碟子的抗肿瘤作用，并分别计算出抑瘤率和生命延长率。结果 不同剂量的苦碟子对小鼠肉瘤S180的抑制率分别为39．86％，38．14％和35．73％（与对照组相比差异有显著性，P＜0．01），苦碟子也能延长荷艾氏腹水瘤（EAC）小鼠的存活期，生命的延长率分别为41．27％、29．79％和17．88％（高剂量组和中等剂量组与对照组相比差异有显著性，P＜0．01）。结论 苦碟子在动物体内可能具有抗肿瘤作用，可作为一种有前途的抗肿瘤药物进行研究。