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1.
不同药物抗风疹病毒的实验研究   总被引:6,自引:1,他引:5  
目的:为筛选有效的RV药物。方法:选用9种新合成的腺嘌呤衍生物、6种尿嘧啶衍生物及大黄醇提液,分别在BHK21、RNC和HNC细胞上进行了体外抗病毒估BHK21上以CPE为观察指标,在RNC和HNC上因不出现明显的CPE,则将细胞培养物转种于BHK21细胞并用间接免疫荧光和免疫酶技术检测药物的抗病毒效应。结果:取代基为--CH2-C6H5、-(CH2)2OH、0C6H5-CH3的腺嘌呤衍生物及取代  相似文献   

2.
为筛选有效的抗疱疹病毒药物,将新合成的9种9-(N4′取代乙醛缩氨基硫脲)腺嘌呤(TSC-A)在体外做了抗单纯疱疹病毒(HSV)试验。结果表明,当取代基为苄基和羟乙基时,抗病毒作用明显,最小抑毒剂量分别为40μg/ml和20μg/ml。提示苄基和羟乙基为活性基团,可能是化学结构的关键部位。当与无环鸟苷联合应用时,呈现出协同效应,6μg/ml和2μg/ml即有抗病毒作用。对TSC-A抗HSV作用机理以及与无环鸟苷结合应用时产生的协同效应机理进行了探讨。  相似文献   

3.
用强化靶向材料修饰斑蟊素多相脂质体的实验研究   总被引:4,自引:0,他引:4  
本试验合成了一种含氧乙基的半乳糖衍生物Gal β1—(CH2—CH2—O)3—C14H29怍为强化靶向材料,使其与卵磷脂(EYL)制得的斑蟊素脂质体相融合,测定其一系列理化性质。结果表明,此种强化靶向材料的加入并不影响脂质体的常规理化性质,小鼠尾静脉注射35h后,强化斑蟊素脂质体是普通斑蟊素脂质体在肝内浓度的3.6倍(P<0.05),滞留时间亦显著延长,因为半乳糖可识别的动物凝聚素存在于肝内,所以此种半乳糖衍生物修饰的脂质体可充当治疗肝病药物的理想载体。  相似文献   

4.
本试验合成了一种含氧乙基的半乳糖衍生物Galβ1-(CH2-CH2-O)3-C14H29做为强化靶向材料,使其与卵磷脂(EYL)制得的斑蟊素脂质体相融合,测定其一系列理化性质。结果表明,此种强化靶向材料的加入并不影响脂质体的常规理化性质。小鼠尾静脉注射3.5h后,强化斑蟊素脂质体是普通斑蟊素脂质体在肝内浓度的3.6倍(P<0.05),滞留时间亦显著延长。因为半乳糖可识别的动物凝聚素存在于肝内,所以此种半乳糖衍生物修饰的脂质体可充当治疗肝病药物的理想载体。  相似文献   

5.
本试验合成了一种含氧乙基的半乳糖衍生物Galβ1-(CH2-CH2-O)3-C14H29做为强化靶向材料,使其与卵磷脂(EYL)制得的斑蟊素脂质体相融合,测定其一系列理化性质。结果表明,此种强化靶向材料的加入并不影响脂质体的常规理化性质。小鼠尾静脉注射3.5h后,强化斑蟊素脂质体是普通斑蟊素脂质体在肝内浓度的3.6倍(P<0.05),滞留时间亦显著延长。因为半乳糖可识别的动物凝聚素存在于肝内,所以此种半乳糖衍生物修饰的脂质体可充当治疗肝病药物的理想载体。  相似文献   

6.
目的设计合成EA衍生物,并对其抑制GST活性进行研究。方法以取代苯酚为原料,经成醚反应,Friedel—Crafts酰基化反应,羟醛缩合反应合成目标化合物;并用人急性早幼粒白血病HL-60细胞株裂解液测定目标化合物对GST抑制活性。结果合成了15个EA衍生物,其结构经IR、MS和IH-NMR谱确证;体外活性实验表明,化合物N-4、N-5、N-6、N-7有较高的抑酶活性。结论EA衍生物对GST具有良好的抑制活性,值得深入研究。  相似文献   

7.
目的:通过对阿昔洛韦分子中碱基的结构修饰,设计并合成6-O-取代阿昔洛韦衍生物,并初步测定它们的抗病毒活性.方法:以阿昔洛韦为先导化合物,合成一系列6-O-取代阿昔洛韦衍生物,并以阿昔洛韦为阳性对照对猴肾细胞Vero进行体外抗HSV-Ⅰ和HSV-Ⅱ病毒活性测定.结果:合成了6-O-取代阿昔洛韦衍生物10个,结构均经过元素分析或MS确认.部分目标化合物具有一定的体外抗HSV-Ⅰ和HSV-Ⅱ病毒活性(MIC分别为25、50 ng·L-1),但较阿昔洛韦(MIC为2 ng·L-1)作用弱.结论:所合成的目标化合物虽然可能在体内更易于吸收,但体外初步抗病毒活性实验结果表明作用较弱.  相似文献   

8.
目的合成邻苯甲酰四氯苯甲酸(C6H5COCl4C6H5CO2H1)及其三有机锡羧酸酯化合物C6H5COCl4C6H5CO2SnR(R=Ph,2a;R=Bz,2b;R=Cy,2c;R=C6H5C(CH3)2CH2,2d),研究它们的抑菌活性。方法化合物1以四氯邻苯二甲酸酐经傅─克酰基化反应合成,化合物2a~2d由1与氢氧化锡在苯中加热回流制得。通过元素分析I、R和1HNMR表征了其结构,并利用微量量热法测试了它们对大肠杆菌的抑菌活性。结果与市售抗菌药比较,不论羧酸还是有机锡羧酸酯都有较强的杀菌活性,多数和青霉素相当。结论实验数据为探索高效、低毒的杀菌药物提供了具有参考价值的信息。  相似文献   

9.
赖百当烷衍生物(I)和/或(I)的植物提取物制成水合脂层相或微脂体的药物。(I)中R_1和R_2为OH或OCOR_6,R_6为1~7个碳的烷基,烷氧基,最好是取代的一个或更多的OH或NR_7R_8,R_7和R_8为H,1~4个碳的烷基残杂环如六氢吡啶,吗啉或N-甲基吡嗪。R_3为H或OH,R_4为氧或基团(i),R_5为乙基或乙烯基。本品用于剌激头发重新生长和防止脱发,促进皮肤的色素沉着和预防/恢复头发变  相似文献   

10.
7-烷氧白杨素衍生物合成及其抗癌活性研究、   总被引:1,自引:0,他引:1  
目的研究7-烷氧白杨素衍生物的体外抗癌活性。方法合成7-烷氧取代的白杨素衍生物,并通过MTT法检测其对人急性粒细胞性白血病(HL-60)细胞、人结肠癌(HT-29)细胞和人胃癌(SGC-7901)细胞增殖抑制作用。结果合成了6个烷氧取代白杨素衍生物,其中化合物2b对HT-29细胞增殖的抑制作用强于5-Fu;化合物2a、2b、2e、2d对HL-60细胞增殖的抑制作用强于5-Fu。结论7-烷氧白杨素衍生物具有潜在的抗癌活性。  相似文献   

11.
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   

12.
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   

13.
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   

14.
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   

15.
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   

16.
Objective:To investigate the gene expression of osteoprotegerin(OPG) and osteoclast differentiation factor(ODF) in the bone tissue of patients with hip fracture due to osteoporosis. Methods:OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers(over 50 years old) with hip fracture(Observer Group) and 30 cases of hip facture sufferers with no osteoporosis(Control group) were analyzed with the Semi-Quantitative RT-PCR method. Results:The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion:Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.  相似文献   

17.
Objective:To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas(SPTP). Methods:Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin(HE) staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results:Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin(9/9 cases), AAT(9/9 cases), NSE(9/9 cases), ACT(7/9 cases), CK20(2/9 cases), CgA(1/9 cases), S-100(3/gcases), PR(4/gcases), Syn(3/9 cases) and CD56(5/9cases), negative in CEA and ER. Conclusion:SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.  相似文献   

18.
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   

19.
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   

20.
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   

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