肝移植术后出凝血功能的调控

目的：探讨肝移植术后出凝血功能的调控方法及意义。方法：通过１１ 例活体肝部分移植术病例,介绍术后出凝血功能的监测指标及调控方法。结果：肝移植术后出凝血功能调控的目标为维持血压、脉搏相对稳定,控制下列指标在一定范围内。 Ｈｂ ：９０ ～１１０ｇ／ Ｌ, Ｈｔ：２５ ％ 上下, Ｐ Ｌ Ｔ：３０ ～５０ ×１０９／ Ｌ, Ｐ Ｔ：１５ ～２０ｓ , Ａ Ｃ Ｔ：１５０ ～２００ｓ,调控手段是依据上述指标补充凝血因子或使用扩血管剂或抗凝剂。结论：本研究所介绍的方法能有效防止肝移植术后的出血和血栓形成。     

急性非淋巴细胞白血病中MGMT与p53基因突变的研究

目的 探讨肿瘤抑制基因ｐ５３、ＭＧＭＴ在急性非淋巴细胞白血病（ＡＮＬＬ）中的改变。方法 用聚合酶链反应－单链构象多态性（ＰＣＲ－ＳＳＣＰ）技术对３１例ＡＮＬＬ患者、２２例正常人ｐ５３基因第５、６、７、８外显子和ＭＧＭＴ基因第１、４外显子进行突变分析。结果 ３１例ＡＮＬＬ中５例存在ｐ５３基因突变、４例存在ＭＧＭＴ基因突变,其中２例ｐ５３与ＭＧＭＴ同时发生突变。结论 ｐ５３基因突变在白血病发生中起一定     

Increasing sampling density improves reproducibility of optical coherence tomography measurements.

PURPOSE: Published series of peripapillary retinal nerve fiber layer (RNFL) measurements using optical coherence tomography (OCT) have sampled 100 evenly distributed points on a 360 degrees peripapillary circular scan. The goal of this study was to determine whether a four-fold increase in sampling density improves the reproducibility of OCT measurements. METHODS: Complete ophthalmic examinations, achromatic automated perimetry, and OCT imaging were performed in all patients. The OCT scanning consisted of three superior and inferior quadrantic scans (100 sampling points/quadrant) and three circular scans (25 points/quadrant). The RNFL thickness measurements and coefficient of variation (CV) were calculated for the superior and inferior quadrants for each sampling density technique. RESULTS: The study included 22 eyes of 22 patients (3 control subjects; 2 patients with ocular hypertension; and 17 patients with glaucoma). Quadrants with associated glaucomatous visual field loss on automated achromatic perimetry had thinner RNFLs than quadrants without functional defects for both the 25- and 100-points/quadrant scans. For quadrants associated with normal visual hemifields (n = 22), there was no difference between the 25- and 100-points/quadrant scans in mean RNFL thickness and CV. Among quadrants with visual field defects (n = 22), RNFL thickness measurements were thinner in the 25-points/quadrant scans than in the 100-points/quadrant scans. The CV for the 25-points/quadrant scans (25.9%) was significantly higher than that for the 100-points/quadrant scans (11.9%). CONCLUSION: Increasing the sampling density of OCT scans provides less variable representation of RNFL thickness. The optimal sampling density to achieve maximal reliability of OCT scans remains to be determined.     

吴茱萸及其有效成分的药理研究进展

本文通过查阅国内外文献，对近十余年来吴茱萸及主要成分吴茱萸碱，吴茱萸次碱，去氢吴茱萸碱，柠檬苦素等药理研究进展作一综述。     

虎杖清热解毒药理作用的研究进展

本文从抗病毒、抗菌、抗氧化清除自由基、对免疫系统的影响、抗毒素抗炎五方面综述了虎杖清热解毒的药理作用。     

尼莫地平对急性缺血性脑损伤的干预机制

目的：探讨尼莫地平对急性缺血性脑损伤的保护作用。方法：将局灶性脑缺血模型大鼠分为假手术组，缺血组及尼莫地平干预组。测定脑组织PLA2活力，脑细胞内游离Ca^2 浓度，脑含水量及脑组织PLA2表达量的改变。结果：尼莫地平可使缺血后脑细胞内游离Ca^2 浓度，PLA2活性及脑组织含水量明显降低。但对脑缺血后脑组织PLA2mRNA表达降低不明显。结论：尼莫地平能抑制PLA2活性，降低细胞内游离Ca^2 浓度，减轻脑水肿病理改变，对缺血性脑细胞损害有一定保护作用。     

VEGF、KDR的表达对肝癌的血管生成、生长、转移的影响

目的　研究血管内皮生长因子 (VEGF)及其受体KDR(kinaseinsertdomaincontainingre ceptor)对肝细胞肝癌的血管生成、生长、转移等方面的影响。　方法　对 45例肝癌、2 1例肝硬化、8例正常肝标本进行了免疫组化、原位杂交染色 ,然后行图像分析 ,观察VEGF、KDR的表达与肝癌病理特点之间的关系 ,并进行统计学分析。　结果　肝细胞肝癌中VEGF高表达 ;并与肝癌的血管生成相关 ;VEGF的表达强度与表达率均与肝癌的转移、包膜形成相关 ;KDR不仅表达于血管内皮细胞 ,还表达于部分肝癌细胞。　结论　VEGF在肝癌的血管生成、癌细胞转移、包膜形成中可能起到重要作用 ,KDR在肝癌细胞的表达可能是一种自分泌行为。     

Study of total quantity control of air pollutants in planning industrial district

The total quantity control of pollutant emissions for an industrial district is determined by coefficient(A) method(Qian,1990).It is suggested that average daily concentrations of air pollutants should be estimated in relation with metrological parameters,such as wind directions,wind speed and atmospheric stability in the period of moniforing by Gaussian model(SEPB,1991),and that the sources of Pollution should be redistributed on the basis of the resulf of monitoring with a view improving local atmosphere environment.     

浅探溃疡病胃镜征象与中医辨证关系

通过观察１１６例溃疡病人内镜下病变部位的粘膜相，根据四诊资料进行辨证分型，试图从微观角度探讨中医病因、病机、诊断；分析了内镜诊断，胃粘膜相与中医舌象、传统辨证的关系，认为胃粘膜相与舌象改变基本一致。对有血瘀症状而无舌脉改变者，胃镜亦能提示瘀阻胃络的粘膜改变，故可作为中医望诊的延伸运用于临床。将宏观辨证与微观辨证有机结合，可补充传统辨证的不足，有利于对中医证型本质的探讨，为中医辨证论治开辟新的前景。