Characterization of lymphoid cell populations in bovine lymphosarcomas (“leukosis”) by flow-cytofluorometry

Acridine orange stained cell suspensions from ten cases of bovine lymphosarcoma were analyzed by flow-cytofluorometry. The green DNA-AO fluorescence showed in all cases, but one, two distinct separate lymphoid cell subpopulations. One corresponded to (normal) diploid lymphoid cells, the other had variable aneuploid values. The histograms of the latter cell populations also indicated cells in S- and G₂-phase. Low-angle light scatter histograms did not show a distinct separation between the different cell types, although two maxima could be distinguished. The relative proportions between the two cell populations varied between 20 and 80% with domination of one or the other cell type.There was some conformity to the histological and cytological picture in the ordinary light microscope, although neither a clear distinction in separable cell types nor differential counts was possible.The diploid lymphocyte subpopulation in the tumor might represent an immunoreactive process against the BLV-induced lymphosarcoma.     

Presence of human herpesvirus 6 and herpes simplex virus detected by polymerase chain reaction in surgical tissue from temporal lobe epileptic patients

We investigated the presence of human herpesvirus 6 (HHV-6) and herpes simplex virus (HSV) in surgical tissue from temporal lobe epileptic patients. A total of 17 cases were studied, including eight males and nine females. The mean age was 24.9 +/- 11.1 years and the mean age of onset was 11.1 +/- 5.4 years. Five patients were diagnosed as encephalitis/meningitis and another three had a history of suspected encephalitis/meningitis, but no patient showed any obvious neurological symptom or mental handicap. Mesial and lateral temporal tissues were examined by polymerase chain reaction. Among six patients positive for HHV-6 (35%), the mesial temporal lobe was positive in four and the lateral temporal lobe was positive in three. Herpes simplex virus was positive in only one patient. Three of the six patients positive for HHV-6 did not show any apparent causes. Mild encephalitis/meningitis induced by HHV-6, a condition sometimes not recognized as encephalitis/meningitis, may be one of the most frequent causes of temporal lobe epilepsy.     

HBV DNA含量与慢性乙型肝炎分析

目的　探讨慢性乙型肝炎患者血清中病毒血症水平与病情程度的相羞生。 方法　 采用FQ -PCR方法检测 12 6例慢性乙型肝炎轻、中、重度患者的血清HBVDNA含量。 结果　 慢乙肝轻、中、重度组HBVDNA含量分别是 (4 85± 1 0 )× 10 8- 10 7copy .ml、(3 82± 0 8)× 10 6- 10 5copy .ml、(1 8± 0 5 )× 10 5- 10 4copy .ml。结论　慢乙肝轻、中、重度各组之间的HBVDNA含量差异有显著性 ;中重度组病毒含量与总胆红素水平呈负相关 ,与白 /球比例呈正相关。     

阔叶十大功劳根中生物碱组分体外抗流感病毒试验研究

利用鸡胚试验技术研究了阔叶十大功劳根中生物碱成分在体外对流感病毒的抑制作用。试验结果表明，阔叶十大功劳根中生物碱成分在20mg／ml时对鸡胚无毒性，0．25mg／ml时仍显示出对甲1型流感病毒较强的抑制作用。     

莪术油治疗小儿呼吸道感染的疗效观察

目的:观察莪术油治疗小儿急性呼吸道感染(ARTI)的疗效和安全性。方法:218例RTI患儿随机分两组,治疗组静滴莪术油25ml/(kg·d),1~2次/d,疗程3~7d;对照组静滴头孢拉定50~100mg/(kg·d),3~4次/d,疗程3~7d。结果:两组总有效率分别为89.96%和88.7%(P>0.05)。用药3d后主要症状、体征等客观指标的改善率,治疗组优于对照组(P<0.05)。治疗组未发现不良反应。结论:莪术油葡萄糖注射液治疗小儿呼吸道感染安全有效、使用方便。     

肺表面活性物质治疗新生儿呼吸窘迫综合征

目的:探讨肺表面活性物质治疗新生儿呼吸窘迫综合征(NRDS)的有效性及临床价值.方法:用肺表面活性物质首剂120 mg,给药时间为出生后3～16 h,平均(5.9±3.2) h,12 h后再用120 mg.分右侧卧、左侧卧、平卧3个体位各1/3剂量,每注入1/3剂量后用复苏气囊供氧1～3 min,使药液在肺内均匀分布,约10 min完成注药过程.结果:用药后即刻症状和体征改善,血气分析明显好转,吸入氧浓度降低,48 h内X线胸片明显改善.结论:肺表面活性物质对NRDS疗效肯定,在改善氧气交换和肺部病变方面发挥重要作用.     

SARS冠状病毒基因组序列分析与抗SARS药物设计

SARS冠状病毒是诱发SARS的主要病原体，文章综述了SARS冠状病毒基因组序列分析的最新进展，SARS冠状病毒编码的蛋白酶在病毒繁殖过程中具有重要功能，可以其作为靶点进行抗SARS冠状病毒药物的筛选。     

新生儿呼吸窘迫综合征肺表面活性物质治疗后肺氧合功能和尿量变化的观察

目的　探讨新生儿呼吸窘迫综合征 (RDS)予肺表面活性物质 (PS)治疗后的尿量变化及尿量与肺氧合功能的关系。方法　对新生儿重症监护病房 (NICU)行呼吸机治疗的 2 0例RDS患儿予血气监测及每小时尿量和入量监测。结果　观察组 (PS组 )最大尿量峰值出现于生后 6 0h ,与对照组比较有显著性差异 (P <0 0 5 )。尿量 /入量比值PS组于生后 48h即大于 0 8,而对照组的上述比值大于 0 8出现于生后 6 0h。尿量与动脉 /肺泡氧分压比值 (PaO2 /PAO2 )有显著相关性 (r =0 7414,P <0 0 5 )。结论　RDS病程中随着尿量增加肺氧合功能改善 ,予PS治疗后利尿期最大尿量峰值增大 ,出现时间早 ,提示在PS治疗后更应该密切观察尿量变化 ,判断病情的恢复。     

呼吸道合胞病毒毛细支气管炎特应性与血清IL-10及病情恢复的关系

为探讨呼吸道合胞病毒(RSV)毛纫支气管炎患儿特应性与血清白介素10(IL-10)水平及病情恢复的关系，应用酶联免疫吸附法分别检测17例年龄50天--12月，特应性体质的RSV毛细支气管炎患儿急性期与恢复期血清IL-l0水平，并以24例非特应性患儿及37例正常儿为对照组。结果显示，急性期待应性组IL—10水平与正常对照组相比，差异无显著性(P＞0．05)，但明显低于无特应性组(P＜0．001)；特应性组喘憋和肺部体征消失均较非特应性组慢，住院时间延长(P＜0．05)；恢复期两组IL-l0差异无显著意义。提示特应性体质患儿RSV感染后不能上调IL-l0产生，结果可导致病变恢复缓慢。