附子理中丸方药的药物动力学研究

附子理中丸是中医治疗脾胃虚寒、脘腹冷痛、呕吐泄泻、手足不温的常用成药。本文通过小白鼠急性死亡实验,测得ip LD_(50)=42.4870g/kg;运用药物累积法对该复方方药进行了药物动力学研究。结果表明:附子理中丸在小鼠体内按一级动力学消除,呈二房室开放式模型分布。测得其t_(1/2)α=0.1922h,t_(1/2)β=11.2888h等动力学参数。阐明了该药的体内动态过程,为评价该药的内在质量及临床安全合理应用提供了参考依据。     

泌尿系先天性异常的X线诊断（附36例分析）

本文报告经我院１９８５～１９９２年间放射科肾盂分泌性造影证实的泌尿系先天性异常３６例，着重讨论常见畸形的种类及Ｘ线诊断，强调常规Ｘ线造影检查仍是有效且较经济的手段，讨论分析发病机制与Ｘ线影象的关系。     

Nd—YAG激光在可摘局部义齿基牙预备的应用

为了解决可摘局部义齿修复过程中牙本质过敏基牙预备的困难和戴牙后加重磨耗等问题，于１９９１年起，对２０例（３０颗）牙本质过敏基牙在预备前、后进行了Ｎｄ－ＹＡＧ激光治疗。经过０．５～４年的临床观察，结果表明该疗法可以明显减轻患者在基牙预备时的敏感与不适，使得基牙预备顺利完成且无副作用，治疗后支托窝与隙卡沟均无明显磨耗。根据本研究结果，建议将Ｎｄ－ＹＡＧ激光治疗作为对可摘局部义齿的牙本质过敏基牙预备的常规方法，对健康基牙亦可在预备后应用。     

脑干听觉诱发电位诊断听神经瘤的假阳性分析

综合分析ＢＡＥＰ各项指标，应用ＣＰＡ病变的ＢＡＥＰ４型诊断标准，从６００例可疑听神经瘤患者中，诊断出ＣＰＡ肿瘤５４例，同时发现４例假阳性。本文的假阳性率为７％（４／５８），较多数文献报道为低。在诊断听神经瘤中，ＢＡＥＰ的峰间期比波的绝对潜伏期准确，只有Ⅰ～Ⅲ峰间期增大所导致的Ⅰ～Ⅴ峰间期增大，才有诊断价值，ＢＡＥＰ只有定位作用，无定性价值，故ＢＡＥＰ诊断听神经瘤必须结合临床表现才有意义。在临床上即使已有明确的长束征时，但ＢＡＥＰ无健侧Ⅳ～Ⅴ波的改变，仍可排除肿瘤的诊断。在ＢＡＥＰ的Ⅳ型中，当健侧Ⅳ～Ⅴ波正常时，应参考复合检查，若其阴性则可排除肿瘤的诊断。     

Pituitary lactotrophs endocrine, paracrine, juxtacrine, and autocrine interactions.

The synthesis and release of PRL by the lactotrophs is subjected to multiple regulators that are classified into four categories: endocrine, paracrine, juxtacrine, and autocrine. Endocrine agents originate from the hypothalamus, gonads, and the posterior pituitary. Paracrine factors are produced by cells of the intermediate and anterior lobes. Juxtacrine transmitters arise from extracellular matrix and cells adjacent to the lactotrophs. Autocrine agents are synthesized by the lactotrophs themselves. Consequently, the overall secretory activity of the lactotrophs reflects a balance between local and distant releasing and inhibiting factors.     

Australian dietary targets in 1995: their feasibility and pertinence to dietary goals for 2000

Abstract: To ascertain whether the diet of young students in health-related courses conformed to Australian dietary targets for 1995 and to identify nutritional needs in view of dietary targets for 2000, 246 undergraduate students analysed their weighed diet for three or five days. Eight often male participants were meeting the dietary goals for 1995 for fibre and fat intake and six of ten were meeting the goals for 2000. More female participants were meeting the goals for fat, but less than half of the females were meeting the 1995 goals for fibre. Some 84 per cent of females, but only 29 per cent of males, were meeting the 1995 dietary goals for sodium. Few participants derived 10 per cent or less of their energy from saturated fat or 10 per cent of their energy from polyunsaturated fatty acids. Substantial numbers of participants failed to meet the recommended daily intakes of zinc, calcium, magnesium and iron (females). Education of specific subgroups and modifications to food production and processing are proposed.     

内皮素—1在内毒素灌注大鼠原位肝脏中的作用

应用肝脏原位灌注模型，探讨了内皮素１（ＥＴ１）在内毒素所致肝损伤中的作用。选用Ｗｉｓｔａｒ大鼠２４只，分为对照组、ＥＴ１组、内毒素组、内毒素＋ＥＴ１抗体组。观察了肝组织中ＥＴ１、一氧化氮（ＮＯ）、前列环素（ＰＧＩ２）、乳酸脱氢酶（ＬＤＨ）、丙二醛（ＭＤＡ）、三磷酸腺苷（ＡＴＰ）和肝组织学变化。结果显示：内毒素能使肝组织ＥＴ１含量增加；内毒素和ＥＴ１均能使细胞脂质过氧化物形成和酶的漏出，还能使肝细胞浊肿变性；ＥＴ１抗体能部分拮抗内毒素所致的肝损伤。结果表明：ＥＴ１参与了内毒素所致的肝损伤作用。     

Characterization and phenotypic analysis of differentiating CD34+human bone marrow cells in liquid culture

Abstract: Our current understanding of human haematopoietic stem cell biology is based in part on the characterization of human CD34⁺ bone marrow cell differentiation in vitro. CD34 is highly expressed on early stem cells and haematopoietic progenitor cells with clonogenic potential and is gradually lost during differentiation and commitment. However, CD71 (transferrin receptor) is expressed at low levels on early stem cells and generally increases during haematopoietic progenitor cell proliferation. We reasoned that the combination of these surface markers would provide a useful framework for the simultaneous analysis of multiple lineage differentiation of CD34⁺ haematopoietic progenitor cells in liquid culture. In this report, we identify the phenotype of distinct subpopulations of myeloid, erythroid and lymphoid cells in liquid suspension culture using differential expression of CD34 vs. CD71 in combination with specific lineage markers. Freshly isolated human CD34⁺ bone marrow cells were introduced into suspension culture and monitored over a 6-d period using 3-colour flow cytometry. This is the first demonstration that differential expression of CD34 vs. CD71 can be used to simultaneously monitor differentiation of multiple haematopoietic cell lineages in liquid suspension culture, facilitating the study of cytokine-, drug- or chemical-induced alterations in haematopoietic progenitor cell differentiation in vitro.     

环孢素A体外抗曼氏血吸虫作用的观察

ＭＦ１小鼠实验感染曼氏血吸虫尾蚴１周、３周和６周后，分别经肺静脉和门静脉灌注取虫。实验显示，药物体外抗曼氏血吸虫的作用呈时间、剂量和虫龄依赖方式，童虫和雄虫对药物更敏感。     

肝硬化患者的脑电活动地形图

对２０例无临床肝性脑病的失代偿期肝硬化患者进行脑电活动地形图（ＢＥＡＭ）检查，并与３３例正常人作对照，以探讨亚临床肝性脑病（ＳＨＥ）的诊断价值。结果表明，２０例肝硬化患者中，ＢＥＡＭ正常５例，轻度异常５例，轻￣中度异常５例，中度异常５例，总异常率为７５％（１５／２０）。ＢＥＡＭ异常的分布特点以弥漫性分布为主要表现，主要为慢频域（δ．θ．δ＋θ／α＋β）活动增强，Ｚ值增高，只有３例波及α频域。提示：