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1.
目的:观察葡萄球菌肠毒素A的细胞增殖诱导能力及其抗肿瘤作用。方法:MTT微量酶反应比色法。结果:纯化SEA在10^-12 ̄10^-15g/ml浓度范围对体外培养的BALB/C鼠脾细胞表现了细胞增殖诱导能力,并呈剂量依赖关系,其中10^-7 ̄10^05g/mlSEA的作用强于最适量(25μg/ml)PHA。在E/T为5 ̄20:1条件下,10^-5g/mlSEA活化48小时的BALB/C鼠脾细胞对Yac-1细胞的杀伤活性高于NK细胞,但SEA未能增强BALB/C鼠脾细胞对B16细胞的杀伤活性。结论:葡萄球菌肠毒素A具有较强的细胞增殖诱导能力,据此超抗原特性可应用于肿瘤的生物治疗。  相似文献   

2.
764-3是从中药丹参中提取的有效成份,对AA和ADP诱导的家兔和人血小板聚集有明显抑制作用,在以AA为底物,猪肺微粒体供酶系统中,小剂量764-3(5-100μg/ml)明显促进6-keto-PGF1a的生成,剂量与效应相关,大剂量764-3(500μg/ml)对TXB2和6keto-PGF1a的生都有抑制作用,结果提示:小剂量764-3可能有利于TXB2和6keto-PGF1a平衡的调节。  相似文献   

3.
764-3是从中药丹参中提取的有效成份,对AA和ADP诱导的家兔和人血小板聚集有明显抑制作用。在以AA为底物,猪肺微粒体供酶系统中,小剂量764-3(5-100μg/ml)明显促进6-keto-PGF1α的生成,剂量与效应相关。大剂量764-3(500μg/ml)对TXB2和6-keto-PGF1α的生成都有抑制作用。结果提示:小剂量764-3可能有利于TXB2和6-keto-PGF1α平衡的调节。  相似文献   

4.
目的:探讨PDGF-AB促进伤口愈合的作用机理及其在瘢痕增生中的作用。方法:取体外培养的人正常皮肤及增生性瘢痕成纤维细胞(HTSFB)测定生长曲线,用MTT法观察PDGF-AB对其增殖影响的差异。结果:两种细胞生长曲线存在差异,PDGF-AB对两种成纤维细胞增殖均有明显刺激作用,且均呈剂量依赖性关系,但作用有差异。结论:PDGF-AB可能通过刺激成纤维细胞增殖促进伤口愈合,同时在瘢痕增生性疾病中起  相似文献   

5.
目的:以DEX诱导小鼠胸腺细胞凋亡为模型,研究中药枸杞多糖(LyciumBarbarumPolydsc-charide.LBP)及氧化苦参碱(OXY)对胸腺细胞凋亡的调节作用。方法:应用PI法检测亚2倍体细胞,二苯胺法测定胸腺细胞DNA片断化%及DNA凝胶电泳。结果:LBP可抑制DEX诱导的DNA片断化,其抑制作用具有剂量依赖性,以1g/L最明显;LBP(lg/L)尚可阻止DEX诱导的胸腺细胞内Ca ̄(2+)升高。结论:LBP可抑制DEX诱导的小鼠胸腺细胞凋亡,OXY对此无明显的调节作用。  相似文献   

6.
目的:研究白细胞介素-1α(IL-1α)诱导牛脑微血管内皮细胞(BCMEC)释放血小板衍生性生长因子(PDGF),以及药物对由之引起的牛脑微血管平滑肌细胞(BCMSMC)增殖的拮抗作用。方法:体外培养BCMEC和BCMSMC,结晶紫染色法测定细胞增殖。结果:IL-1α不能直接促进BCMSMC的增殖;但经IL-1α刺激的BCMEC培养上清能显著地促进BCMSMC的增殖。这种增殖作用与IL-1α剂量呈正相关,并且可被抗PDGF抗体中和。欧芹素乙(Imp),异欧芹素乙(iso-Imp),6-(α,α-pheny-lacetylpiperazinyl)phenyl-5-methyl-4,5-dihydro-3(2H)-pyridazinone(PMDP)不影响IL-1α诱导BCMEC释放PDGF,但对PDGF促BCMSMC增殖呈剂量依赖的拮抗。结论:IL-1α促进BCMEC释放PDGF。IL-1α对BCMSMC增殖的促进作用需经PDGF等生长因子的介导。Imp,iso-Imp,PMDP拮抗PDGF引起的BCMSMC增殖。  相似文献   

7.
粉防己碱抑制大鼠肺动脉高压过程中PDGF-A、B表达的研究   总被引:2,自引:0,他引:2  
目的:探讨血小板源生长因子(PDGF)在粉防己碱(Tet)抑制野百合碱(MCT)诱导的大鼠肺动脉高压肺血管构形重建中的作用。方法:建立(MCT)诱导的大鼠肺动脉高压模型,同进以两个实验组加不同剂量的Tet抑制肺动脉高压,用免疫组化方法检测Tet对MCT致肺动脉高压在 肺小动脉中膜平滑肌细胞PDGF-A、B表达的影响。结果:Tet能抑制肺小动脉中膜平滑肌细胞增殖时的PDGF-B的表达增强(P〈0.0  相似文献   

8.
黄颜木素对HSC—T6细胞增殖和胶原合成的影响   总被引:14,自引:1,他引:13  
目的:研究黄颜木素对激活的永生型大鼠肝腑 脂细胞--HSC-T6细胞增殖和胶原合成的影响。方法:细胞增殖采用结晶紫染色法检测,胶原合成采用^3H-酸掺入法分析。结果:黄颜木素(6.25-50.00μmol/L)以剂量依赖方式显著抑制血小板源生长因子(PDGF)刺激的HSC-T6细胞增殖,并抑制生长因子因子β1(TGFβ1)诱导的细胞内胶原合成,结论:黄颜木还给具有抑制激活的肝储脂细胞增殖和胶原合成  相似文献   

9.
目的:观察绞股蓝总皂甙(GP)及GP与化疗药合用对体外培养慢性粒细胞性白血病急性变病人癌细胞增殖的影响。方法:用MTT比色分析法测定GP及GP与阿糖胞苷(Ara-C)、高三尖杉酯碱HHRT分别合用对慢粒急变细胞的相对抑制率。结果:GP(12.5~50.0μg·ml-1)对体外培养慢性粒细胞性白血病急性变病人癌细胞具有明显抑制作用(P<0.05~0.01)。GP(3.125μg·ml-1)同Ara-C(5.0μg·ml-1)、HHRT(6.75μg·ml-1)分别合用相对抑制率(77.0%,86%)较单用Ara-C(15.0μg·ml-1)或HHRT(20.0μg·ml-1)的相对抑制率(47%、41%)高(P<0.05)。结论:1.GP对慢性粒细胞性白血病急性变病人癌细胞生长增殖具有抑制作用,呈剂量相关性。2.GP能增强阿糖胞苷、高三尖杉酯碱抑制增殖作用。  相似文献   

10.
用斑点杂交法分析了Ge-132体外对ConA诱导的小鼠脾细胞表达IL3mRNA的影响。结果Ge-132使鼠脾细胞表达IL3mRNA在20h左右达高峰,有效剂量范围较大(10-3μg/ml~100μg/ml),尤以10-1μg/ml和1μg/ml两个剂量效果为佳,提示Ge-132促进造血的作用与其提高T细胞表达IL3有关。  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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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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