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1.
HPLC法测定上海地区不同采摘期枳实中辛弗林含量   总被引:4,自引:0,他引:4  
辛弗林 (synephrine)是中药枳实中起重要作用的有效成分 ,具有强心、增加心血输出量、收缩血管、提高总外周血管阻力而使左心室压力和动脉血压上升的作用。不同产地、不同采摘时期枳实的粒径及其中辛弗林的生物量与含量相差较大。本文通过对上海市金山区和崇明县两地 5月中旬至  相似文献   

2.
救心复脉注射液对豚鼠心室肌细胞L型钙电流的影响   总被引:2,自引:0,他引:2  
目的:探讨救心复脉注射液(枳实提取液)有效成分辛弗林(311)、N-甲基酪胺(417)对豚鼠心室肌细胞膜L型钙通道电流(ICa-L)的影响。方法:用酶解法分离单个心室肌细胞,采用全细胞膜片钳技术,观察辛弗林、N-甲基酪胺对豚鼠心室肌细胞膜ICa-L的影响。结果:用辛弗林(10,25,50,100 mmol/L)时能增大 ICa-L ,增加率分别为 8.27%,27.29%,41.01% 和 48.74% (P<0.05)。 用N-甲基酪胺(10,25,50,100 mmol/L) 时能增大 ICa-L ,增加率分别为 10.05%, 30.12%,43.05% 和51.90%(P<0.05)。辛弗林和N-甲基酪胺只改变电流幅度,不改变I-V曲线形状。结论:辛弗林和N-甲基酪胺有浓度依赖性的增大豚鼠心室肌细胞ICa-L,促进钙通道开放的作用。  相似文献   

3.
目的:比较枳实、枳壳中辛弗林的含量差异,为枳实、枳壳类药材质量控制提供科学依据。方法:采用高效液相色谱法,测定14批枳实、枳壳药材(8批枳壳,6批枳实)中辛弗林的含量。结果:枳实、枳壳药材中辛弗林含量有明显差异,枳实辛弗林含量明显高于枳壳。同产地枳实、枳壳中辛弗林含量差异较大。结论:枳实、枳壳类药材中辛弗林含量差异较大,应建立含辛弗林类药材的质量标准,为临床用药安全有效提供科学依据。  相似文献   

4.
枳实的提取工艺研究及质量分析   总被引:1,自引:0,他引:1  
目的:研究枳实的最佳提取工艺及其质量分析的方法。方法:选用溶剂用量(A)、提取时间(B)与提取次数(C)3个因素,每个因素选取3个水平进行正交试验,采用薄层扫描法对枳实药材及其提取物中的有效成分辛弗林进行含量测定。结果与结论:最佳工艺为用6倍量95%乙醇回流提取3次,每次1.5h;枳实药材中辛弗林含量为0.438%,枳实提取物中辛弗林含量为4.060%。  相似文献   

5.
枳实为芸香科植物酸橙Citrus aurantium L.的幼果。其中主要含有生物碱、黄酮、挥发油。枳实及其提取物中的生物碱辛弗林、N-甲基酪胺等成分具有强心、升压及对外周血管等多种功能与作用。有机氯农药在我国已禁用多年,但由于它性质稳定,在环境中可以存在几年甚至几十年。因此,测定枳实及其提取物中的有机氯农药残留量具有十分重要的意义。  相似文献   

6.
目的 研究大孔吸附树脂对枳实中辛弗林的吸附性能,考察精制工艺。方法 以辛弗林质量分数和收率为考察指标,比较了HPD-300、NKA-9、AB-8、D001-cc等树脂对枳实中辛弗林的吸附和解吸特性,以及纯化能力。结果 D001-cc树脂具有最佳的吸附洗脱参数,上样液生药质量浓度为0.5 g生药/mL,4倍体积蒸馏水、2倍体积1.5 mol/L氨水依次洗脱,产物中辛弗林质量分数为46.3%。得率为1%。结论 D001-cc树脂对枳实中辛弗林综合性能较好,适合于辛弗林的分离精制。  相似文献   

7.
近十年来我国中草药的生物碱类化学成分及其类似物和衍生物进行化学合成的研究,取得了显著的成就,现就化学结构分类加以综述。有机胺类辛弗林(Synephrine)(1)和N-甲基酪胺(N-Methyltyramine)(2)是枳实升压、抗体克的有效成分。江纪武等用对羟基苯乙酮合成了(1)和(2) 益母草碱(Leonurine)(3)为丁香酸胍醇酯类化合物,是益母草的主要成分,邵国贤等应用益母草胺与甲基  相似文献   

8.
目的:探讨血红素-HO-CO-cGMP和L-精氨酸-NOS-NO-cGMP通路对内毒素休克(ES)大鼠主动脉血管张力的影响。方法:SD大鼠12只,分为LPS组和对照组,用离体血管环张力测定技术,观察胸主动脉环(TARs)对苯肾上腺素(PE)累积收缩反应,并分别用正铁血红素(He),L-精氨酸(L-Arg),锌原卟啉(ZnPP-IX),氨基胍(AG),N-硝基-L-精氨酸(L-NNA)或亚甲蓝(MB)与TARs共同孵育20min后,比较两组对PE的收缩反应,动脉组织中CO/NO的含量,HO-1和NOS活性。结果:LPS组主动脉对PE累积收缩反应明显降低,用ZnPP-IX或AG孵育后,可部分逆转低血管反应性,经L-NNA或MB孵育,可完全逆转低血管反应,而且He或L-Arg孵育可不同程度加重低血管反应状态,LPS组动脉组织中CO/NO的含量明显上升,HO-1/NOS活性显著增加,结论:LPS可激活HO-1和iNOS,大量增加CO/NO合成,cGMP水平上升,共同介导ES大鼠主动脉低收缩反应。  相似文献   

9.
目的 初步确认四逆散镇静催眠作用的活性物质,为揭示其镇静催眠作用的机制提供依据。方法 采用HPLC方法分析四逆散ig给药后大鼠血中及脑脊液中移行成分,色谱条件为Kromasil C18柱(250 mm×4.6 mm,5 μm),体积流量0.8 mL/min,柱温28 ℃,流动相A为乙腈,流动相B为磷酸水(pH值为3),梯度洗脱(10%~90% A),分析时间为140 min。结果 4种成分辛弗林、芍药苷、柴胡皂苷C、甘草次酸均可使脑脊液中内源性物质5-羟色胺(5-HT)峰面积大于空白脑脊液中峰面积,但作用不如四逆散冻干粉整方强,且混合物组(辛弗林-芍药苷-柴胡皂苷C-甘草次酸)脑脊液中5-HT峰面积是四逆散冻干粉组的3.2倍;在延长戊巴比妥钠所致小鼠睡眠时间方面,辛弗林、芍药苷、柴胡皂苷C、甘草次酸及其混合物和四逆散冻干粉组作用强于对照组,且混合物组优于四逆散冻干粉组。结论 通过四逆散冻干粉血和脑脊液中移行成分分析及四逆散冻干粉对戊巴比妥钠所致小鼠睡眠时间影响的药效研究,初步确认了四逆散冻干粉的活性物质是血清中四逆散冻干粉的移行成分辛弗林、芍药苷、柴胡皂苷C及甘草次酸的混合物。  相似文献   

10.
赵连友  李宏伟 《医学争鸣》1998,19(4):467-468
0引言Ikeda等[‘j报道,一氧化氮(Nt))分泌减少可致实验大鼠血压升高.精氨酸加压素(AVP)具有强烈的缩血管作用,在高血压病(EH)患者血浆中显著升高,并参与EH的发生和发展[‘j.新近研究表明,血管平滑肌细胞(VSMC)含有AVP的多肽及其mRNA「”.但是,对于EH患者动脉VSMC的一氧化氮合酶(N()S)-N()系统变化及其勺AVP关系的问题,目前尚不清楚.我们动态观察了EH患者和正常人的离体动脉VSMC的Nt)含量和N()S活性的变化及AVP的干预效应,旨在探讨EH患者N()S-N()系统的变化与AVP的关系及其在高血…  相似文献   

11.
Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P< 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P< 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.  相似文献   

12.
Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P < 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (>0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P <0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P < 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.  相似文献   

13.
Objective: To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods: SD rats served as both donors and recipients. 4℃ sodium lactate Ringer's was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava (IVC) inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results: Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion: This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.  相似文献   

14.
Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.  相似文献   

15.
Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.  相似文献   

16.
A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care(~'4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.  相似文献   

17.
Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.  相似文献   

18.
Journal of Nanjing Medical University (English Edition) JNMU, sponsored by Nanjing Medical University, was established in 1987. It is a bimonthly comprehensive English medical journal published locally and abroad.Since 2007, Journal of Nanjing Medical University (English Edition )was granted Elsevier the full publishing and distribution rights worldwide for the Electronic Edition, excluding the People's Republic of China.  相似文献   

19.
目的:评价使用安心颗粒对急诊经皮冠状动脉介入术(PPCI)术后生活质量的影响.方法:将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组(术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次)和对照组(仅接受基础药物治疗).所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表(MIDAS)、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果:入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异(P>0.05);出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低(P<0.05);组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低(P<0.05).两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血(P>0.05).两组发生轻度血小板减少症的患者数比较无差异(P>0.05).结论:PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.  相似文献   

20.
Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P<0.01);the MAP decreased(P<0.01)and the HR increased drastically(P<0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.  相似文献   

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