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1.
两种二萜类生物碱对乌头碱诱发大鼠心律失常的作用比较   总被引:5,自引:0,他引:5  
给麻醉大鼠分别ip等效剂量(小鼠iV LD50/14)的拉巴乌头碱和3,15-二乙酰苯甲酰乌头宁后,观察对乌头碱发大鼠心律失常的影响。结果表明:ip 0.5mg/kg拉巴乌头碱能显著对抗乌头碱诱发大鼠的心律失常,ip0.6mg/kg,3,15-二乙酰苯甲酰乌头宁则无对抗作用。提示:拉巴乌头碱的抗心律失常作用是其特有的药理作用,并不是二萜类生物碱共同具有的作用。  相似文献   

2.
应用Fura-2作为荧光试剂,测定大鼠血小板细胞内Ca~(2+)浓度变化。蜂毒素1.5mg/L使血小板细胞内Ca~(2+)浓度增加;悬液中加入CaCl_21mmol/L,血小板细胞内Ca~(2+)继续增加。维拉帕米3.125mg/L作用5min后,蜂毒素仍可使血小板内Ca~(2+)增加.但加入CaCl2血小板Ca~(2+)的浓度不再增加。提示蜂毒素促进大鼠血小板细胞内Ca~(2+)的释放和细胞外Ca~(2+)进入细胞内。  相似文献   

3.
红黄通脉冲剂(HHTM)的主要有效部位为黄酮类化合物,HHTM100mg.kg^-1(以所含总黄酮计)po给药,对乌头碱诱发大鼠室性心律失常,肾上腺素诱发家兔室性心律失常及引起小鼠室颤明显对抗作用,明显提高上腺素和乌头碱致室性心早搏的阈剂量,减少氯仿致小鼠室颤的发生率。对哇巴因诱发豚鼠的心律失常无明显一对抗作用。  相似文献   

4.
目的 探讨蝙蝠葛苏林碱DSL对局部脑缺血再灌注损伤的保护作用。方法 32只istar雄性大鼠随机分为4组,Ⅰ、Ⅱ、Ⅲ组分别为阻断大脑中动脉(MCA)后立即腹腔注射DSl.2mg.kg^-1.5mg.kg^-1和8mg.kg^-1的实验组,IV阴性对照组。建立大鼠复灌性局部脑缺血模型,观察阻断大脑中动脉3h,复通21h的双侧脑组织的病理变化。  相似文献   

5.
蛇床子总香豆素(TCCM)对氯仿诱发的小鼠室颤,氯化钙诱发的大鼠室颤均有明显的预防作用;对乌头碱诱发的大鼠心律失常有明显的治疗效果。这些均提示TCCM的抗心律失常机制可能与其抑制Na+、Ca2+内流有关。TCCM能对抗肾上腺素诱发的心律失常,提示其抗心律失常机制也可能与阻断β-肾上腺素受体有关。  相似文献   

6.
就普鲁卡因对犬全身PGI_2与TXA_2平衡的影响进行了实验研究。结果表明:当普鲁卡因分别以1mg·kg~(-1)·min~(-1)、1.5mg·kg~(-1)·min~(-1)和2mg·kg~(-1)·min~(-1)不同滴注速率恒速静脉滴注时,各组动物的TXB_2血浆含量,用药前与用药后相比无显著差异(P>0.05)。而6-Keto-PGF_(1α)的血浆含量,只是在滴注速度>1.5mg·kg~(1-)·min~(-1)时才所下降。提示普鲁卡因不增高血浆TXB_2含量甚或有抑制其生成的作用。因而,普鲁卡因用于休克病人和患有心肌缺心性心脏病病人手术的麻醉,可能有其独到的优点。  相似文献   

7.
眼镜蛇神经毒素中枢性镇痛作用脑内受体的研究   总被引:5,自引:0,他引:5  
目的:探讨纯化的眼镜蛇神经毒素(α-Cobrotoxin,α-CBT)中枢性镇痛作用的有关受体,为研究α-CBT的中枢镇痛作用机理提供依据。方法:给大鼠腹腔注射阿托品1mg.kg^-1或纳洛酮3mg.kg^-1后,再向大鼠中脑导水管周围灰质(Periaqueductal Gray,PAG)微量注射2g/L的α-CBT生理盐水溶液0.5μl(相当于0.5μg.kg^-1),用光辐射甩尾法观察大鼠的痛  相似文献   

8.
角叉菜胶(Carrageenin,Car)致大鼠胸膜炎后8h,胸膜腔渗出液中中性白细胞游离钙浓度(Neu[Ca^2^+]i)升高,中性白细胞钙调素活性(Neu-CaMA)增强,粉防己碱(Tetrandrine,Tet)(10-80mg.kg^-^1)于致炎前30min和致炎后4h给大鼠灌胃可明显减少炎症胸膜腔渗出液量,蛋白渗出量和白细胞游出数,同时能降低Neu[Ca^2^+]i和Neu-CaMA;  相似文献   

9.
研究补充钙对缺氧性肺血管收缩反应及脑血管舒张反应的影响。在全麻狗,静脉滴注CaCl2生理盐水(1mg·kg-1·min-1)。用原子吸收光谱法测定血清钙,输钙前后分别测常氧与缺氧时血流动力学指标,并测右颈总动脉血流量反映相对脑血流量(CBF)。以缺氧时肺血管阻力(PVR)和CBF变化率(dPVR%,dCBF%)反映血管反应强度。结果:常氧下血清钙从1.65~1.85mmol/L增加至3.10~3.20mmol/L时可降低平均肺动脉压(mPAP)(P<0.01),此时平均体动脉压、体血管阻力、心输出量(CO)和CBF均无明显变化。补钙前吸10%氧5min时mPAP、PVR、CBF、CO都增加(均为P<0.01)。补钙后缺氧5min,mPAP、PVR增高程度和dPVR%均较未用钙时小(P分别为<0.05、<0.01、<0.01),CBF的变化无显著性意义。提示补一定浓度钙可减轻缺氧性肺动脉高压而无增强缺氧性脑血管舒张反应的副作用。  相似文献   

10.
运用小鼠迟发型变态反应(DTH)模型和组织胺(H)、5-羟色胺(5-HT)诱发大鼠皮肤炎症性渗出的方法,观察了左旋门冬氨酸钙(L-Ca-Asp)对小鼠耳肿胀和大鼠皮肤炎症反应的影响,并与葡萄糖酸钙(Ca-Glu)作比较。结果表明,L-Ca-Aspip165mg·kg-1和330mg·kg-1对小鼠DTH有明显的抑制作用;L-Ca-Aspip250mg·kg-1和500mg·kg-1对H、5-HT分别诱导的大鼠皮肤炎症性渗出亦有较明显的抑制作用,其抑制效应不亚于Ca-Glu,提示L-Ca-Asp对动物过敏和(或)炎症反应具有一定的抑制作用。  相似文献   

11.
FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…  相似文献   

12.
Dr.Zhang Ren,the chief physician,is the chairman of Shanghai Acupuncture and Moxibustion Association.Having been engaged in medicine for about 40 years,he is experienced in treating various intractable diseases.In his long years of clinical practice,he advocates taking the TCM differentiation as the basis to seek for the acupuncture method for treatment of modern intractable diseases.The author of this essay had the fortune to follow Dr.Zhang in study.The following is a summary of Dr.Zhang's experience in the acupuncture treatment for different intractable diseases with the same therapeutic principle.  相似文献   

13.
In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.  相似文献   

14.
Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.  相似文献   

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16.
目的 探讨猪肺磷脂注射液联合经鼻持续气道正压通气(NCPAP)对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性(CK-MB)的影响.方法 选取呼吸衰竭早产儿80例,分为观察组和对照组各40例.对照组采用NCPAP给氧治疗,观察组给予NCPAP给氧联合猪肺磷脂气管内给药.观察两组患儿治疗前及治疗12h、24 h后PaO2、PaCO2、血氧饱和度(SaO2)、pH的变化情况,检测治疗前及治疗5d后血清CK-MB水平;评估两组患儿的临床治疗效果.结果 两组患儿PaO2、PaCO2、SaO2、pH比较,差异均有统计学意义(P<0.05),其中观察组治疗后的PaO2、SaO2、pH均高于对照组,PaCO2则低于对照组.两组的PaO2、SaO2、pH均随观察时间延长而升高(P<0.05),PaCO2均随观察时间的延长而降低(P<0.05).观察组治疗有效率为87.5%,显著高于对照组的70.0% (P <0.05).治疗5d后两组患儿血清CK-MB水平均较前降低(P<0.05),且观察组明显低于对照组(P<0.05).结论 猪肺磷脂注射液气管内给药联合NCPAP可以显著降低呼吸衰竭早产儿CK-MB的含量,提高治疗有效率,起到很好的呼吸循环支持作用.  相似文献   

17.
Evidence obtained from randomized controlled trials (RCTs) has been generally accepted as the gold standard in the evaluation of clinical effectiveness. Readers need to understand the trial design, implementation, results, analysis and interpretation, so as to fully Jnderstand the results of RCTs. Thus, the investigators of RCTs have to report these items in a complete, accurate and clear manner. Since 1998, we have conducted several evaluations on the reporting quality of RCTs published in Chinese journals on traditional Chinese medicine (TCM) and results have shown that there is an urgent need for higher quality RCTs on TCM.  相似文献   

18.
Ankylosing spondylitis is a chronic and progressive disorder with inflammation mainly involving the central axis joints. It mainly affects the cervical spine and the lumbosacral area, with the pathogenesis closely related to the kidney and the Governor Vessel (GV). TCM holds that the syndrome is deficiency in origin and excess in superficiality, which is due to insufficiency of the kidney, deficiency of GV, and blocking of the channels with the invasion of exogenous evil, leading to poor circulation of qi and blood and malnutrition of the bones, muscles and joints. The TCM method of tonifying the kidney and strengthening GV to regulate circulation of qi and blood and check the arthralgia pain should be adopted, with the Kidney-Tonifying and GV Strengthening Decoction (益肾强督汤) prescribed.  相似文献   

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20.
CHEMOTHERAPY playsa greatrolein the treat- ment of malignanttumors,especiallyingynecolo- gicalones.But inanticancerchemotherapy,leuko-cytopeniaisfrequentlytheprimarydose-limitingsideeffect factor.Moreover,cancersarefrequentlychemoresistantbe-causeof overexpressionof P-glycoprotein(P-gp), which isencodedby multidrugresistancegene (MDR1 ) and detectableinup to50% ofhuman cancersand renderscellsresistancetoanticancerdrugs.The safetyand potentialtherapeuticbenefitof mdr1 gene transferredto h…  相似文献   

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