降纤酶治疗急性脑梗死临床疗效观察

目的　为评价国产降纤酶对急性脑梗死的治疗效果及安全性。　方法　以低分子右旋糖酐、钙离子拮抗剂、银杏制剂为对照药 ,从 1 998年 1月至 1 999年 1月共观察脑梗死急性期脑梗死 (发病 7天内 )病人 30例 ,对照组 1 4例。　结果　用降纤酶治疗脑梗死第 1天 ,临床症状即出现明显改善 ,其疗效在治疗后第 1天、第 7天、第 1 4天均明显优于对照组。　结论　认为降纤酶治疗急性脑梗死疗效是肯定的。从实验室检查发现 ,降纤酶可明显降低纤维蛋白原 ,并使凝血酶原时间延长 ,这与以往研究结果完全一致 ,表明降纤酶是通过降低纤维蛋白原而改善临床症状的。本组研究资料提示 ,降纤酶可降低血浆中纤维蛋白原 ,对急性脑梗死有明显疗效 ,未发现有明显副作用。因此 ,我们认为在有凝血指标监护下使用降纤酶治疗急性脑梗死是安全有效的 ,值得在临床上进一步推广。     

降纤酶治疗脑梗死的临床观察

目的　观察国产降纤酶治疗脑梗死的临床疗效、毒副作用以及对血浆纤维蛋白原、凝血酶原时间的影响。　方法　对 CT或 MRI确诊的脑梗死病人 33例 ,按随机方法分为治疗组与对照组 ,分别于治疗前后测定神经功能缺损评分、纤维蛋白原、凝血酶原时间及肝、肾功能并进行对比分析。　结果　降纤酶治疗后神经功能缺损明显改善 ( P <0 .0 0 1 )并且治疗后 1天即出现明显效果 ( P <0 .0 0 5 ) ,总有效率明显高于对照组 ( P <0 .0 5 ) ;血浆纤维蛋白原明显下降 ,与对照组相比 P <0 .0 5 ;治疗过程中未见不良反应。　结论　降纤酶治疗脑梗死疗效显著 ,起效快 ,较安全。     

降纤酶治疗急性脑梗死双盲对照研究

目的 观察降纤酶治疗急性脑梗死的临床疗效。方法 用国产双盲编号的降纤酶静滴治疗发病２４ｈ内的急性脑梗死患者６５例（治疗组３１例、对照组３４例）,并同时于治疗前、后进行神经功能缺损评分及检测血浆纤维蛋白原（ＦＧ）、凝血酶原时间（ＰＴ）、凝血酶原活动度（ＰＡ）。结果 神经功能缺损评分显著进步率,降纤酶治疗组７４．２％,明显优于对照组２９．２％,两组比较有显著性差异（Ｐ〈０．０１）;治疗组ＦＧ降低明显优     

降纤酶双盲对照治疗急性脑梗死109例

目的　评价降纤酶治疗急性脑梗死的临床疗效及与中药川芎嗪的比较。　方法　采用前瞻性、随机、双盲对照的方法。选择 2 4 h内的患者。降纤酶第 1天 1 0 u,第 3、 5天各 5 u静滴。　结果　降纤酶组急性期治愈率高于对照组 ,有显著差异 ;1 2周治愈率接近。神经功能缺损评分及 Barthel指数略好于对照组 ,但无显著差异。降纤酶组治疗后纤维蛋白原明显降低 ,与治疗前及对照组比较 ,有非常显著差异。结论　降纤酶有显著降低血纤维蛋白原作用 ,对 2 4 h内急性脑梗死疗效较川芎嗪略好。无明显毒副作用。     

降纤酶治疗急性脑梗死的临床观察

目的　探讨降纤酶治疗急性脑梗死的临床疗效。　方法　符合入选条件发病 6～ 2 4 h的急性脑梗死患者 1 2 0例 ,随机分为治疗组与对照组。治疗组 60例在应用同等药物治疗的同时 ,加用降纤酶首次 1 0 u静脉滴注 ,其后每日 5u维持治疗 5天。治疗前后测定纤维蛋白原、凝血酶原时间 ,评定神经功能恢复情况。　结果　治疗组有效率 87% ,对照组有效率 62 %。　结论　降纤酶治疗急性脑梗死安全有效     

降纤酶治疗急性脑梗死血浆D—二聚体的研究

目的 探讨降纤酶治疗急性脑梗死患者血浆－Ｄ二聚体水平的变化以证实其溶栓作用。方法 采用前瞻性、随机、双盲对照方法。将７０例急性脑梗死病人分为治疗组和对照组。分别治疗前和治疗后第６天测血浆纤维蛋白原的Ｄ－二聚体。结果 治疗组血浆纤维蛋白原治疗后比前有明显下降,两者比较有明显的差异（Ｐ〈０．０１）。血浆Ｄ－二聚体治疗后比治疗前有明显的增高,两者比较有明显的差异（Ｐ〈０．０１）。而对照组均无明显差异（Ｐ     

降纤酶治疗急性脑梗死的临床研究

目的　评估降纤酶对急性脑梗死的疗效及安全性。　方法　采用前瞻性、随机、对照试验 ,以东菱精纯克栓酶 ( DF-52 1 )和低分子右旋糖酐为对照组 ,从 1 996年 1月至 1 998年 1 0月共观察 4 81例 ,其中降纤酶组 2 89例 ,东菱组 92例 ,低右组 1 0 0例 ,共完成试验者 30 1例 ,各组份别为 1 4 9例、 70例和 82例 ,于治疗前及治疗后第 1天 ,第 3天 ,第 7天 ,第 1 4天查血浆纤维蛋白原、凝血酶原时间及血小板计数、肝肾功能等。并于治疗前及治疗后 1 ,7,1 4天评估神经功能恢复情况。　结果　降纤酶对急性脑梗死疗效显著 ,明显优于低分子右旋糖酐 ,在治疗后 1天已表现出明显效果 ,与日本生产的东菱精纯克栓酶比较疗效相似 ,发病 1 4天治疗总有效率分别为 84 .4 5%和 80 .0 0 %。同时降纤酶组与东菱组治疗后纤维蛋白原下降明显 ,于 7～ 1 4天有回升趋势 ;低右组则无明显变化。　结论　降纤酶具有与东菱精纯克栓酶相似的疗效、副作用小 ,价格明显低于东菱精纯克栓酶。认为国产降纤酶可以取代东菱精纯克栓酶 ,其在脑梗死急性期治疗上具有广泛的前景     

降纤酶治疗急性脑梗死Ⅱ期临床研究

目的探讨降纤酶治疗急性脑梗死的有效性和安全性,并进行客观评价.方法按照全国脑防办<降纤酶治疗急性脑梗死第二阶段临床再评价研究>实施方案,采用前瞻性、随机、双盲、安慰剂对照的临床研究方法,将49例符合标准的急性脑梗死患者随机分为降纤酶组和对照组.评定指标包括脑卒中的临床神经功能缺损程度评分、Barthel指数、血浆纤维蛋白原水平、副作用.结果治疗组23例,终止治疗5例,其中1例自动退出试验、2例消化道出血、1例出现皮肤大片淤斑、1例突然死亡;对照组26例,终止1例,为自动退出试验.(1)治疗组应用降纤酶后血浆纤维蛋白原水平降低与对照组比较,差异非常显著(P＜0.001).尤其用药第6天最显著;(2)治疗后14天临床神经功能缺损评分减少优于对照组,有显著性差异(P＜0.05),但第14天、3个月时Barthel指数评分并无显著差异;(3)治疗组应用降纤酶后有1例病情加重,而对照组中有4例病情加重;(4)治疗组中有2例出现上消化道出血,1例皮肤大片淤斑,而对照组无上述情况.结论降纤酶降低血浆纤维蛋白原的作用确切,对减少神经功能缺损评分疗效显著,具有抑制急性脑梗死病情进展的作用,本组无1例并发颅内出血,但有消化道出血及皮下出血,有增加出血危险性的可能.     

降纤酶治疗急性脑梗死疗效观察

目的　探讨降纤酶治疗急性脑梗死的疗效　方法　采用随机抽样分组方法 ,将 60例病人分为治疗组和对照组 ,治疗组在对照组的治疗基础上 ,加用降纤酶首量 1 0 u加入生理盐水 2 50 ml中静滴 ,以后 5u,隔天 1次 ,共 4次为 1疗程。疗程结束后进行疗效比较　结果　治疗组显效率 90 % ,对照组显效率 4 3.3% ;血浆纤维蛋白原治疗组显著下降 ,对照组无明显变化　结论　降纤酶降低纤维蛋白原显著 ,并具有抗凝、溶栓、降低血液粘滞度的作用 ,治疗急性脑梗死疗效确切 ,无毒副作用     

降纤酶治疗急性脑梗死临床疗效观察

目的 为了观察降纤酶治疗急性脑梗死临床疗效及其安全性。方法 采用随机双盲对照方法,对４０例（治疗组２１例,对照组１９例）发病２￣２４ｈ的急性发编号随机用药（降纤酶或安慰剂）,首次１０ｕ,第３、５天５ｕ分别加入生理盐水２５０ｍｌ缓慢静滴,同时应用钙拮抗剂 血化瘀等。用药前后分别检测纤维蛋白原（Ｆｇ）,凝血酶原时间（ＰＴ）,凝血的活动度（ＰＡ）,其中１８例（治疗组１０例,对照组８例）还检测了优球蛋白酶     

六种藓类植物茎的比较解剖学研究

通过对6种藓类植物,即褶叶青藓(Brachythecium salebrosum(Web.et Mohr.)B.S.G.)、湿地匐灯藓(Plagiomnium acutum(Lindb.)Kop.)、侧枝匐灯藓(Plagiomnium maximoviczii(Lindb.)Kop.)、大凤尾藓(Fissidensnobilis Griff.)、大羽藓(Thuidium cymbifolium(Doz.et Molk.)B.S.G.)和大灰藓(Hypnum plumaeforme Wils.)嫩茎和老茎的石蜡切片和显微观察发现,同一藓类植株的嫩茎和老茎,茎结构稳定,不同种藓类植物茎横切面具有不同特征.植物体茎横切面形状、表层细胞的层数、细胞大小和细胞壁厚薄、皮层细胞大小和形状、中轴的有无以及比例等特征可以作为藓类植物的分科分类依据之一.     

Cause of Senescence of Nine Sorts of Flowers

The levels of endogenous phytohormones and respiratory rate in nine sorts of flowers such as Cymbidium faberi Rolfe, Nopalxochia ackermannii Kunth and others were investigated both at full bloom and senescence and meanwhile the effect of exogenous phytohormones on prolonging the blossoms and promoting ethylene production were tested. There is a high content of endogenous ethylene in all the long-lived flowere, about 3–16 folds higer than the short-lived ones. There is a high level of ABA at full blooming flowers of short-lived flowers, in which there is no or only some cytokinins in it, but the ratio of CTK (6BA+zeatin)/ABA is smaller(l.7). The endogenous ABA reached a much higher level at senescence in all nine sorts of flowers, so it is reasonable to consider that it is ABA which plays an important role of regulation in controlling flower's senescence. There is a much higher level of GA3 and zeatin in the long-lived flowers which is not demonstrated in the shortlived ones. The respiratory rate is one of the factors controtling the longevity of flowers, but it does not play a decided role. Application of 6BA and zeatin prolongs distinctly orchid’s longevity, however exogenous IAA through the promotive action on ethylene production, evidently extends the longevity of the flowers of the Nopalxochia ackermannii Kunth.     

Photoregulation of seed germination of wild-type and of an aurea-mutant of tomato

Seed germination of an aurea mutant of tomato ( Lycopersicon esculentum Mill.) is promoted by continuous irradiation with red, far-red or long-wavelength far-red (758 nm) light as well as by cyclic irradiations (5 min red or 5 min far-red/25 min darkness). Far-red light applied immediately after each red does not change the germination behaviour. Seed germination of the isogenic wild-type, cv. UC-105, is promoted by continuous and cyclic red light while it is inhibited by continuous and cyclic far-red light and by continious 758 nm irradiation. Far-red irradiation reverses almost completely the promoting effect of red light. The promoting effect (in the aurea mutant) and the inhibitory effect (in the wild-type) of continuous far-red light do not show photon fluence rate dependency above 20 nmol m⁻² s⁻¹. It is concluded that phytochrome controls tomato seed germination throgh low energy responses in both the wild type and the au mutant. The promoting effect of continuous and cyclic far-red light in the au mutant can be attributed to a greater sensitivity to P_fr.     

真菌类遗传学分析的知识结构教学

本文以认知结构理论为指导,讨论了真菌类遗传分析与高等动植物遗传分析的内在联系,认为利用这种内在联系进行教学可收到好的效果并说明了作者的具体教学过程。 Abstract:In the paper, the relationship between genetic analysis of Fungi and genetic analysis of high animal and plant was discussed.A good results were obtained when we adopted this method in the teaching.     

龙胆科药用植物化学成分的研究现状

龙胆科植物在我国的分布范围很广,且多数为药用植物,其多数种属的药用植物,至今其化学成分尚未被系统研究。综述了目前龙胆科药用植物的化学成分的研究现状及一般提取方法,对近年来发现的环烯醚萜及裂环烯醚萜类化合物进行了总结,为本科药用植物的更深入研究提供了参考。     

The effects of glutamine of the maintenance of embryogenic cultures of Cryptomeria japonica

Summary Embryogenic tissues of sugi (Cryptomeria japonica) were induced on a modified Campbell and Durzan (CD) medium containing 1 μM 2,4-dichlorophenoxyacetic acid (2,4-D) and 600 mg l⁻¹ glutamine, and subcultured in the medium of the same composition for over 1 yr. This resulted in a mixed culture of embryogenic and non-embryogenic cells. When embryogenic cells were isolated and cultured independently, their capacity to form embryogenic aggregates was lost. Thus, the non-embryogenic cells present within a mixed culture system were essential to the formation of embryogenic aggregates. When embryogenic tissues were isolated and cultured independently on a high glutamine-containing (2400 mg l⁻¹) medium, dry weights and endogenous levels of glutamine increased, and the tissue could generate a large number of embryogenic aggregates. Amino acid analysis of embryogenic and non-embryogenic cells from the maintenance culture indicated a higher level of glutamine was present in the latter. The high endogenous level of glutamine in the non-embryogenic portion of mixed cell masses may be the supplier of glutamine for maintaining the embryogenic property of the tissues.     

Specificity of action of piperidylcholine derivatives as substrates of cholinesterases of various origin

The review deals with study of enzymologic properties of a novel highly specific acetylcholinesterase substrate, N-(β-acetoxyethyl) piperidinium iodomethylate (“piperidylcholine”), and its 30 derivatives that were tested as effectors of cholinesterases of mammals and various species of Pacific squids. It was proven for the first time that responsible for specificity of action was structure of cyclic ammonium grouping of the alcohol part of molecule of the ester substrate. Analysis of specificity is performed based on enzymatic hydrolysis parameters—activity of catalytic center of cholinesterases and bimolecular constant of the reaction rate that are determined at optimal and low substrate concentrations. Among the specially synthesized group of thioester compounds there is revealed one more highly specific acetylcholinesterase substrate—N-(β-acetoxyethyl) piperidinium.     

Interconnection of parameters of regulation system of lipid peroxidation and of morphophysiological parameters of mouse liver

A complex analysis of seasonal fluctuations of the mean group parameters of the system of regulation of lipid peroxidation has been performed in liver of Balb/c mice. Association of lipid characteristics and morphophysiological parameters is studied in the Balb/c mouse liver. An inter-connection is revealed between the liver index and the amount of lysoforms of phospholipids, the scale and character of the interconnection differing essentially depending on proportion of phos-phatidylcholine in mouse liver phospholipids.