影响阿替普酶治疗急性缺血性卒中早期疗效的临床研究

目的:探讨影响阿替普酶静脉溶栓治疗急性缺血性卒中早期疗效的因素。方法:回顾性分析2010年11月至2014年11月我院接受阿替普酶静脉(rt-PA)溶栓治疗的49例急性缺血性卒中患者的临床数据,根据美国国立卫生研究院神经功能缺损评分(NIHSS评分),溶栓后24h评分减少超过3分为溶栓早期有效组(24例),否则为溶栓早期无效组(25例),比较两组各临床数据的差异。结果:两组患者性别、年龄、吸烟史、酗酒史、高血压病史、糖尿病史、溶栓前血糖、血生化、血压等均无差异(P0.05);早期有效组患者房颤发生率、脑白质病变发生率和溶栓前NIHSS评分较早期无效组低,差异均有统计学意义(P0.05);早期有效组患者90天生活自理率较早期无效组高,差异有统计学意义(P0.05)。结论:阿替普酶静脉溶栓后早期疗效好者3个月预后好;溶栓前无房颤、无白质疏松患者溶栓后早期疗效好。     

影响尿激酶静脉溶栓治疗急性脑梗死预后因素的初步分析

目的:对影响急性缺血性脑卒中患者应用尿激酶溶栓治疗预后的相关危险因素进行初步分析及研究,为今后选择适宜应用尿激酶溶栓的患者打下基础。方法:以2015年1月1日至2015年10月31日入院且应用尿激酶静脉溶栓的38例急性缺血性脑卒中患者,根据治疗3个月后的预后情况将患者分为A组(24例,预后良好)和B组(14例,预后不良),对两组患者的预后影响因素进行分析。结果:预后良好组患者的溶栓前NIHSS评分低于预后不良组,差异具有统计学意义(P0.05)。多因素的Logistic回归分析显示,吸烟和HINSS评分与急性脑梗死尿激酶溶栓预后不良有关,差异具有统计学意义(P0.05),且NIHSS评分是预后的独立预测因素。结论:尿激酶静脉溶栓治疗脑梗死的患者,溶栓前较高的NIHSS评分可能与溶栓预后不良有关。吸烟的患者溶栓后出现预后不良的几率是不吸烟患者溶栓后预后不良的8.83倍,溶栓前NIHSS评分每增加1分,溶栓预后不良的几率增加1.76倍。     

超选择性动脉溶栓治疗急性大脑中动脉脑梗死的疗效和安全性评价

目的:探讨超选择性动脉溶栓治疗急性大脑中动脉脑梗死的疗效和安全性。方法:收集我院就诊或住院治疗的120例急性大脑中动脉脑梗死患者,随机分为实验组和对照组,每组60例。两组患者入院后均给予相应的治疗措施,对照组患者给予静脉溶栓;实验组患者给予超选择动脉溶栓,观察并比较两组患者治疗前后神经功能缺损评分(NIHSS)以及患者治疗后临床疗效和并发症发生率。结果:与治疗前相比,两组患者治疗后的NIHSS水平均下显著降差异具有统计学意义(P0.05);与对照组相比,实验组患者的NIHSS水平、并发症的发生率和病死率较低而治疗有效率较高差异均具有统计学意义(P0.05)。结论:超选择性动脉溶栓治疗急性大脑中动脉脑梗死的临床疗效以及安全性较静脉溶栓更好。     

动脉介入溶栓术治疗急性脑梗死的临床疗效

目的:探究动脉介入溶栓术对急性脑梗死患者的临床疗效。方法:选择我院收治的急性脑梗死患者43例并随机划分成实验组以及对照组。对照组19例予静脉内尿激酶溶栓,实验组24例予尿激酶动脉内溶栓。比较两组临床疗效、治疗前后血清脑钠肽及Hcy水平的变化。结果:实验组总有效率显著高于对照组,差异具有统计学意义(P0.05)。治疗后,两组患者血清脑钠肽、同型半胱氨酸(Hcy)水平及NIHSS评分均较治疗前降低,且与对照组比较,实验组血管总再通率较高、NIHSS评分、血清脑钠肽及Hcy水平较低,差异具备有统计学意义(P0.05)。结论:动脉介入溶栓术治疗急性脑梗死患者能够有效提高血管再通率、NIHSS评分及临床疗效,推测其与降低患者血清脑钠肽及Hcy水平相关联。     

丁苯酞氯化钠注射液治疗急性脑梗死临床疗效观察

目的观察丁苯酞氯化钠注射液治疗急性脑梗死的临床疗效。方法将124例急性脑梗死患者随机分为治疗组和对照组各62例,对照组给予常规治疗,治疗组在常规治疗基础上加用丁苯酞氯化钠注射液治疗,观察比较两组的临床疗效、神经功能缺损评分(NIHSS)和日常生活能力(ADL)。结果治疗组的总有效率为96.8%,明显高于对照组的80.6%,两组比较差异有统计学意义(P0.05)。治疗后,两组患者的NIHSS评分均低于治疗前,ADL评分高于治疗前,差异均有统计学意义(均P0.05);而且两组患者的NIHSS评分、ADL评分比较,治疗组改善明显优于对照组,差异均有统计学意义(均P0.05)。结论丁苯酞氯化钠注射液治疗急性脑梗死能明显提高临床疗效,改善患者的神经功能,提高日常生活能力。     

阿替普酶联合丁苯酞对脑梗死的疗效和炎性因子的影响

探讨阿替普酶联合丁苯酞治疗急性脑梗死的疗效和对患者血清MMP-9和VEGF水平的影响。2014年10月至2015年12月入院的急性脑梗死患者80例,随机分为联合组和阿替普酶组各40例,阿替普酶组给予阿替普酶治疗,联合组在阿替普酶组基础上联合丁苯酞治疗,两组疗程均为14 d,比较联合组和阿替普酶组患者治疗后神经功能改善情况、炎性因子水平的变化和患者临床治疗效果的情况。酶联吸附试验检测MMP-9、VEGF浓度。治疗前联合组和阿替普酶组NIHSS评分和Barthel指数评分差异无统计学意义(p0.05)。患者治疗后6 h、24 h、7 d和14 d,联合组NIHSS评分分别比治疗前明显降低(p0.05),联合组Barthel指数评分均高于治疗前(p0.05)。治疗后7 d和14 d,联合组和阿替普酶组比较,NIHSS评分和BI指数差异有统计学意义(p0.05),阿替普酶组的总有效率为80%,低于联合组95%(x2=4.11,p=0.043),治疗前两组患者血清MMP-9、VEGF含量差异无统计学意义(p0.05),治疗7 d和14 d后,联合组血清中的MMP-9含量明显减少且均低于阿替普酶组(p0.05)。VEGF含量明显增加且联合组明显高于阿替普酶组(p0.05)。阿替酶联合丁苯酞对急性脑梗死治疗后,能明显减少MMP-9炎性因子水平,使血管内皮细胞因子水平浓度增加,保护脑细胞功能,能改善神经功能。     

高压氧联合低剂量阿替普酶静脉溶栓治疗老年急性缺血性脑卒中的疗效及对患者神经认知功能、凝血指标的影响

摘要 目的：评价高压氧（HBO）联合低剂量阿替普酶（rtPA）静脉溶栓治疗老年急性缺血性脑卒中（AIS）的疗效及对患者神经认知功能、凝血指标的影响。方法：选入我院2020年1月~2022年12月收治的老年AIS患者60例,随机分为对照组和观察组,各30例。对照组予以HBO+标准剂量（0.9 mg/kg）rtPA静脉溶栓治疗,观察组采用HBO+低剂量（0.6 mg/kg）rtPA治疗。评价两组的治疗效果、神经认知功能及凝血指标等,并进行统计比较。结果：两组治疗总有效率无明显差异（P＞0.05）;与溶栓前比较,两组溶栓后24 h、7 d时的NIHSS显著下降、MMSE明显升高（P＜0.05）,但两组之间无明显差异（P＞0.05）;相较于溶栓前,两组溶栓后7 d时PT、APTT、TT、D-D不同程度增加,Fib明显下降（P＜0.05）,而观察组增加/下降幅度较小,与对照组差异显著（P＜0.05）;观察组出血率明显低于对照组（6.67% vs 26.67%,P＜0.05）;两组死亡率无明显差异（P＞0.05）。结论：HBO联合低剂量与标准剂量rtPA静脉溶栓在改善AIS患者神经认知功能、临床疗效及死亡率方面效果相当,但低剂量对血凝功能影响小,同时出血发生风险低。     

依达拉奉联合阿替普酶对急性脑梗死炎性因子的影响

目的:探讨依达拉奉联合阿替普酶治疗急性脑梗死的临床疗效以及对炎性因子水平的影响。方法:收取2012年5月至2015年5月间我院收治的急性脑梗死患者115例作为研究对象,随机分为观察组及对照组。对照组57例仅给予阿替普酶治疗,观察组58例在对照组的基础上加用依达拉奉。比较两组患者炎性因子水平、神经功能缺损评分、临床疗效以及不良反应发生情况。结果:治疗前,两组患者CRP、IL-6、IL-8及TNF-α等各项炎性因子水平以及NIHSS评分均无显著差异(P0.05)。两组患者炎性因子水平随治疗进行显著下降,观察组显著低于对照组(P0.05)。治疗后3个月,观察组患者总有效率(96.55%)显著高于对照组(85.96%),差异有统计学意义(P0.05)。观察组不良反应发生率(5.17%)与对照组(7.02%)相比无显著差异(P0.05)。结论:依达拉奉联合阿替普酶可有效降低血清炎症因子水平,治疗急性脑梗死具有良好的临床疗效及安全性,值得临床推广应用。     

护理干预对应用阿替普酶早期溶栓治疗急性脑梗塞患者的临床观察

目的:探讨采用阿替普酶(rt-PA)静脉溶栓治疗急性脑梗塞患者的护理措施,以期改善患者的预后并提高患者的生存质量.方法:对2011年1月-2012年5月我院收治的20例使用阿替普酶早期溶栓治疗的急性脑梗塞患者进行护理干预,使用NIHSS进行效果评价.将20例患者随机分为两组,普通组实施常规护理,对照组实施护理干预,比较两组的临床治疗效果.结果:使用阿替普酶溶栓的急性脑梗塞患者经护理干预后溶栓结束无明显不良反应,NIHSS评分自溶栓前逐渐降低,效果较好.两组患者临床治疗效果存在显著差异(P＜0.05).结论:使用阿替普酶对急性脑梗塞患者进行溶栓治疗效果较好,溶栓前后进行科学的护理干预,可以促进患者康复,保证患者的康复.     

尤瑞克林联合静脉溶栓治疗急性脑梗塞的临床疗效及对血浆血小板、D-D、Fg水平的影响

目的:探讨尤瑞克林联合静脉溶栓治疗急性脑梗塞的临床疗效及对血浆血小板、D-二聚体(D-D)、纤维蛋白原(Fg)水平的影响。方法:选择2015年5月至2018年5月我院接诊的急性脑梗塞患者65例作为研究对象,根据随机数表法分为观察组(n=35)和对照组(n=30)。对照组采用静脉溶栓治疗,观察组采用尤瑞克林联合静脉溶栓治疗。比较两组治疗后的临床疗效,治疗前后血浆血小板、D-D、Fg、美国国立卫生研究院卒中量表(NIHSS)评分、改良Barthel指数评定量表(MBI)水平的变化及不良反应的发生情况。结果:治疗后,观察组临床疗效总有效率为94.29%,显著高于对照组(73.33%,P0.05)。两组患者治疗前血浆血小板、D-D、Fg水平、NIHSS、MBI评分比较差异均无统计学意义(P0.05);治疗后,两组患者血浆血小板、D-D、Fg水平及NIHSS评分均较治疗前明显降低,且观察组患者以上指标均显著低于对照组(P0.05);两组患者治疗治疗后MBI评分均较治疗前显著升高,且观察组MBI评分显著高于对照组(P0.05)。两组患者不良反应总发生率分别为2.86%、13.33%,组间比较差异无统计学意义(P0.05)。结论:尤瑞克林联合静脉溶栓治疗急性脑梗塞患者的临床效果显著优于单用静脉溶栓治疗,这可能与其更有效改善改善患者血浆血小板、D-D、Fg水平有关。     

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.