In vitro study of the effects of khat (Catha edulis Forsk) extract on isolated mouse interstitial cells

Isolated mouse interstitial cells were incubated with different concentrations of khat (Catha edulis) extract (0.06 mg/ml, 0.6 mg/ml, 6 mg/ml, 30 mg/ml and 60 mg/ml) and cell viability as well as testosterone concentration measured at 30 min intervals over a 3 h incubation period. High concentrations of khat extract (30 mg/ml and 60 mg/ml) significantly inhibited testosterone production while low concentrations (0.06 mg/ml, 0.6 mg/ml and 6 mg/ml) significantly stimulated (P < 0.05) testosterone production by mouse interstitial cells. Similarly, at concentrations of 30 mg/ml and 60 mg/ml, there was a significant decrease in interstitial cell viability, whereas at 0.06 mg/ml, 0.6 mg/ml and 6 mg/ml there was no significant decrease. There was only a weak correlation (r = 0.39) between testosterone production and viable interstitial cells. We postulate that khat extract at high concentrations may cause reproductive function impairment in the user but at low concentrations, may enhance testosterone production with accompanying effects on reproductive functions in male mice.     

克瘤丸对结肠癌细胞HT-29细胞凋亡及细胞周期的影响

目的 观察克瘤丸对人结肠癌细胞生长的影响及其作用机制.方法 将4mg/ml、2mg/ml、1mg/ml、0.5mg/ml、0.25mg/ml浓度克瘤丸作用于HT-29细胞24～48h后,用四甲基偶氮唑蓝(MTT)法检测克瘤丸对HT-29细胞增殖的影响,AnnexinV单染法检测克瘤丸对HT-29细胞凋亡的影响,流式细胞仪检测细胞周期的分布情况. 结果 与对照组比较,浓度为4、2、1、0.5mg/ml克瘤丸作用HT-29细胞48h,OD值、48h抑制率差异均有统计学意义(P＜0.01);4、2、1mg/ml浓度克瘤丸作用HT-29细胞48h,OD值、48h抑制率均明显优于0.25mg/ml及0.5mg/ml浓度克瘤丸(P＜0.01).与1mg/ml浓度比较,2mg/ml、4mg/ml组凋亡率差异有统计学意义(P＜0.05).4mg/ml时G0/G1期前出现明显的亚二倍体区,与1mg/ml、2mg/ml组比较,差异有统计学意义(P＜0.05).结论 克瘤丸对人结肠癌细胞HT-29的增殖具有抑制作用并能够引起该细胞的凋亡.     

加减大黄廑虫丸抑制血管生成的实验研究

目的探讨加减大黄廑虫丸对血管生成的抑制作用。方法鸡胚绒毛尿囊膜（CAM）法检测加减大黄磨虫丸对血管生成的影响;采用MTS比色法观察不同浓度的加减大黄磨虫丸对血管内皮生长因子（VEGF）诱导的ECV-504细胞增殖的影响;Tran—swell小室检测不同浓度的加减大黄廑虫丸对ECV-304细胞移行的影响;Matrigel实验检测不同浓度的加减大黄磨虫丸对ECV-304细胞内皮管腔形成的影响。结果加减大黄磨虫丸中、低浓度组能够抑制鸡胚CAM血管生成;MTS比色法显示,0．05—0．20g/ml浓度的加减大黄鹰虫丸对VEGF诱导的ECV-304细胞增殖具有抑制作用,而更低和更高浓度的加减大黄廑虫丸则无抑制作用。Transwell小室实验显示,加减大黄廑虫丸浓度为0、12．5、25．0和50．0mg/ml时ECV-504细胞移行数分别为208．67±17．16、132．67±16．50、78．33±13．50和18．67±6．66;Matrigel实验显示,加减大黄磨虫丸浓度为0、12．5、25．0和50．0mg/ml时ECV-304细胞内皮管腔形成数分别为25．67±1．53、22．33±1．53、16．33±2．52和2．33±1．53,可见抑制细胞移行和管腔形成的作用随浓度增大而增强。结论加减大黄廑虫丸具有明显抑制血管生成的作用。     

Anti-tumor effects of water-soluble propolis on a mouse sarcoma cell line in vivo and in vitro

The honeybee product propolis and its extracts are known to have biological effects such as antibiotic, anti-viral, anti-inflammatory and anti-tumor activities. This study was designed to investigate whether water-soluble propolis (WSP) inhibits tumor growth. The tumor cell line used was mouse sarcoma 180 (S-180), and its growth was determined in vitro and in vivo with exposure to different concentrations of WSP. The effects of WSP on tumor cells in vitro were evaluated by measuring the intracellular uptake of 3H-thymidine. 3H-thymidine uptake was inhibited in accordance with the concentration of WSP. The minimum concentration of WSP necessary for 3H-thymidine uptake inhibition was 1.0 microg/ml and uptake was suppressed to 88% of the level in non-treated cells at this concentration. In an experiment using tumor-bearing mice, oral administration of WSP was begun 24 hours after transplantation of S-180 cells. WSP was administered to the mice 5 times, every other day for 10 days. The doses were 320 mg/kg (10 mg/mouse) or 960 mg/kg (30 mg/mouse) of body weight. All mice were sacrificed 10 days after transplantation, and tumor growth was evaluated. The orally administered WSP significantly inhibited the growth of transplanted tumors (p < 0.05). Furthermore, histological findings revealed a significant reduction in mitotic cells and tumor invasion of the muscular tissue at both dose-levels of WSP.     

The stem of sinomenium acutum inhibits mast cell-mediated anaphylactic reactions and tumor necrosis factor-alpha production from rat peritoneal mast cells

The aqueous extract of Sinomenium acutum stem (SSAE) (0.1-1000 mg/kg) dose-dependently inhibited systemic anaphylactic reaction induced by compound 48/80 in mice. In particular, SSAE reduced compound 48/80-induced anaphylactic reaction with 50% at the dose of 1000 mg/kg. SSAE (100-1000 mg/kg) also significantly inhibited local anaphylactic reaction activated by anti-dinitrophenyl (DNP) IgE. When mice were pretreated with SSAE at a concentration ranging from 0.1 to 1000 mg/kg, the plasma histamine levels were reduced in a dose-dependent manner. SSAE (1-1000 microg/ml) dose-dependently inhibited histamine release from the rat peritoneal mast cells (RPMCs) activated by compound 48/80 or anti-DNP IgE. In addition, SSAE (0.1 microg/ml) had a significant inhibitory effect on anti-DNP IgE-induced tumor necrosis factor-alpha (TNF-alpha) production. These results indicate that SSAE inhibits mast cell-mediated anaphylactic reactions and TNF-alpha production from mast cells.     

苦参碱和氧化苦参碱对人肝癌细胞株 SMMC-7721凋亡的影响

目的：探讨苦参碱与氧化苦参碱对人肝癌SMMC-7721细胞凋亡的影响。方法采用MTT法检测SMMC-7721细胞增殖,并采用膜联蛋白V-异硫氰酸荧光素/碘化丙啶双染法检测SMMC-7721细胞凋亡。结果苦参碱与氧化苦参碱浓度为0.50～2.00 mg/ml时,细胞增殖抑制率均逐渐上升,呈药物浓度和作用时间的依赖性;同样浓度下（1.00 mg/ml）,苦参碱增殖抑制作用强于氧化苦参碱[24 h、48 h和72 h时苦参碱组分别为（42.39±0.04）%、（51.69±0.03）%、（78.98±0.05）%,氧化苦参碱组分别为（21.36±0.02）%、（36.16±0.02）%、（61.24±0.13）%;P均＜0.05]。苦参碱与氧化苦参碱浓度为0.25、0.50、1.00 mg/ml时SMMC-7721细胞凋亡率显著增高;同样时间点（48 h）,苦参碱对细胞凋亡的诱导强于氧化苦参碱[0.25、0.50、1.00 mg/ml时,苦参碱组凋亡率分别为（4.08±0.20）%、（4.32±0.19）%、（9.93±0.18）%,氧化苦参碱组分别为（2.20±0.18）%、（3.08±0.26）%、（9.01±0.20）%;P均＜0.05]。结论苦参碱和氧化苦参碱可抑制人肝癌SMMC-7721细胞增殖,促进其凋亡。     

蛇葡萄素的血管生成抑制作用

目的:探讨蛇葡萄素对内皮细胞及肿瘤细胞的生长及其血管生成的影响。方法:体外用MTT法对牛主动脉内皮细胞进行增殖抑制实验;用ELISA法、免疫组化染色法以及流式细胞仪观察蛇葡萄素对人肝癌细胞Bel-7402分泌VEGF、bFGF的抑制作用;体内观察蛇葡萄素对人肝癌Bel-7402裸鼠移植瘤的抑制作用。结果:蛇葡萄素对牛主动脉内皮细胞的增殖在6.4~51.2μg/m l呈现浓度依赖性抑制作用,IC50=22.0±4.0μg/m l。ELISA法测定结果显示,12.8μg/m l、25.6μg/m l、38.4μg/m l蛇葡萄素对肝癌Bel-7402细胞分泌VEGF的抑制率分别为14.2%、40.0%及49.6%。免疫组化染色结果显示,12.8μg/m l以上的蛇葡萄素能使细胞体积缩小,分泌VEGF、bFGF明显减少。流式细胞仪检测VEGF、bFGF结果,25.6μg/m l及38.4μg/m l蛇葡萄素对VGEF的抑制率分别为32.2%及57.4%,对bFGF的抑制率分别为54.9%及62.6%。蛇葡萄素浓度为100、150、200 mg/kg时对人肝癌Bel-7402裸鼠移植瘤的抑制率分别可达24.3%、41.4%及45.7%。结论:蛇葡萄素在体外能有效抑制内皮细胞增殖及人肝癌Bel-7402细胞分泌VEGF和bFGF,具有抑制血管生成的作用;体内能有效抑制人肝癌Bel-7402裸鼠移植瘤的生长,提示蛇葡萄素也许可作为一个肿瘤血管生成抑制剂用于肿瘤防治。     

Changes in chromosome structure, mitotic activity and nuclear DNA content from cells of Allium Test induced by bark water extract of Uncaria tomentosa (Willd.) DC

The influence of water extract of Uncaria tomentosa (Willd.) DC bark on the meristematic cells of the root tips of Allium cepa L., e.g. cells of Allium Test, was investigated. The experiment was carried out in two variants: (1) continuous incubation at different concentrations (2, 4, 8 and 16 mg/ml) of the extract for 3, 6, 12, 24, 48 and 72h; and (2) 24-h incubation in three concentrations of the extract (4, 8 or 16 mg/ml), followed by post-incubation in distilled water for 3, 6, 12, 24 and 48h. During the continuous incubation, the mitotic activity was reduced (2 and 4 mg/ml) or totally inhibited (8 and 16 mg/ml), depending on the concentration of the extract. All the concentrations resulted in gradual reduction of the mitotic activity. In the concentration of 2 mg/ml, the mitotic activity reached its lowest value after 12h (2 mg/ml) and after 24h in 4 mg/ml, followed by spontaneous intensification of divisions during further incubation. Instead, in higher concentrations of the extracts (8 and 16 mg/ml), the mitotic activity was totally inhibited within 24h and did not resume even after 72h. Incubation caused changes in the phase index, mainly as an increase in the number of prophases. After 24h of incubation, in all phases, condensation and contraction of chromosomes were observed. During post-incubation, divisions resumed in all concentrations, reaching even higher values than the control. Cytometric analysis showed that the extract caused inhibition of the cell cycle at the border between gap(2) and beginning of mitosis (G(2)/M).     

和厚朴酚与青蒿素体外抗人胃癌MGC-803细胞的作用研究

目的考察和厚朴酚、青蒿素抗肿瘤及两者联合用药的效果。方法采用MTT测定和厚朴酚、青蒿素对人胃癌MGC-803细胞、正常肝细胞LO2抑制作用,用IC50评测体外直接抗肿瘤效果,用金氏公式进行联合用药分析。结果 20μg/ml的和厚朴酚对人胃癌MGC-803细胞具有快速而不可逆的杀伤作用;和厚朴酚能抑制人胃癌MGC-803细胞、正常肝细胞LO2的增殖,IC50分别为3.96,8.04μg/ml。青蒿素对其没有明显的抑制作用,IC50分别为64.85、93.92μg/ml。3.5μg/ml的和厚朴酚与12.5,10,7.5μg/ml的青蒿素联合应用对人胃癌MGC-803细胞体外抑制呈相加作用,Q值分别为1.05,1.04,1.12;与30,20,15μg/ml青蒿素联合应用对人胃癌MGC-803细胞体外抑制呈协同作用,Q值分别为1.21,1.31,1.24;2μg/ml和厚朴酚与30,20,15,12.5,10,7.5μg/ml青蒿素联合应用对人胃癌MGC-803细胞体外抑制呈协同作用Q值分别为1.27,1.28,1.32,1.39,1.16,1.25。结论和厚朴酚对MGC-803细胞较强的抑制肿瘤生长的作用;青蒿素对人胃癌MGC-803细胞、正常肝细胞LO2的毒性低,和厚朴酚与青蒿素联合应用对人胃癌MGC-803细胞可产生协同作用或相加作用。     

散结镇痛片对小鼠实验性痛经模型的影响

目的:观察散结镇痛片对小鼠实验性痛经模型的影响。方法:制备正常小鼠离体子宫和催产素所致小鼠离体子宫收缩模型,以及雌激素与缩宫素联用引起小鼠扭体反应模型,观察散结镇痛片对其影响。结果:散结镇痛片6.4 mg.mL-1以上对小鼠离体子宫自发收缩具有显著抑制作用;1.6 mg.mL-1以上对缩宫素引起的小鼠离体子宫收缩具有抑制作用,并具有量效关系;0.32～1.28 g.kg-1能够显著降低缩宫素引起的小鼠扭体反应次数,具有量效关系。结论:散结镇痛片对小鼠离体和在体痛经模型具有良好的治疗作用,对抗子宫平滑肌收缩而导致的组织缺血可能是其抗痛经作用的机制之一。     

苦参碱对人胃癌细胞NCI-N87体外的增殖抑制作用

目的探讨不同浓度苦参碱对体外培养的人胃癌细胞NCI-N87的增殖抑制作用。方法NCI-N87细胞经不同浓度苦参碱处理后,采用CCK-8法检测药物对肿瘤细胞的抑制作用,观察细胞形态学改变,检测细胞DNA分布。结果苦参碱浓度>3.0mg/ml,细胞毒作用较大;浓度在0.5～2.0mg/ml时,对肿瘤细胞的生长有抑制作用,且呈时间剂量依赖性;浓度在0.1mg/ml时,对肿瘤细胞生长几乎无抑制作用。苦参碱作用后可增加G1期细胞所占的百分比,阻止细胞进入S期。结论苦参碱对人胃癌细胞NCI-N87增殖有抑制作用,并能阻抑细胞周期的进程。     

Immunomodulatory and antitumor activity of Piper longum Linn. and piperine

Alcoholic extract of the fruits of the plant Piper longum and its component piperine was studied for their immunomodulatory and antitumor activity. Alcoholic extract of the fruits was 100% toxic at a concentration of 500 microg/ml to Dalton's lymphoma ascites (DLA) cells and 250 microg/ml to Ehrlich ascites carcinoma (EAC) cells. Piperine was found to be cytotoxic towards DLA and EAC cells at a concentration of 250 microg/ml. Alcoholic extract and piperine was also found to produce cytotoxicity towards L929 cells in culture at a concentration of 100 and 50 microg/ml, respectively. Administration of alcoholic extract of Piper longum (10 mg/dose/animal) as well as piperine (1.14 mg/dose/animal) could inhibit the solid tumor development in mice induced with DLA cells and increase the life span of mice bearing Ehrlich ascites carcinoma tumor to 37.3 and 58.8%, respectively. Administration of Piper longum extract and piperine increased the total WBC count to 142.8 and 138.9%, respectively, in Balb/c mice. The number of plaque forming cells also enhanced significantly by the administration of the extract (100.3%) and piperine (71.4%) on 5th day after immunization. Bone marrow cellularity and alpha-esterase positive cells were also increased by the administration of Piper longum extract and piperine.     

In vitro immunomodulatory effect of Pouteria cambodiana (Pierre ex Dubard) Baehni extract

The methanolic stem bark extract from Pouteria cambodiana (Pierre ex Dubard) Baehni was evaluated for immunomodulating activity on BALB/c mice. The antioxidant effect was also assessed. The extract presented a good dose-response effect in the peritoneal macrophage phagocytosis assay with higher activity at 1mg/ml and an EC50 of 0.02 mg/ml and also activated lysosomal enzyme activity with an EC50 of 0.16 mg/ml. In the splenocyte proliferation assay, the extract without mitogen was active (EC50, 0.01 mg/ml) while the EC50 of the extract with lipopolysaccharide (LPS) and pokeweed mitogen (PWM) were 0.02 and 0.41 mg/ml, respectively. The extract showed low free radical scavenging activity in the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical assay with an IC50 of 0.24 mg/ml, being less active than ascorbic acid, butylated hydroxytoluene (BHT) and alpha-tocopherol which showed IC50 of 0.08, 0.10 and 0.11 mg/ml, respectively. The extract at doses up to 0.073 mg/ml had no effect on lipid peroxidation. The potent immunological but no antioxidant activity of the extract presented in this study can explain, at least in part, the Thai folklore application of this plant in the treatment of fever and skin eruption.     

Inhibitory potential of neem (Azadirachta indica Juss) leaves on dengue virus type-2 replication.

In the present study we report in vitro and in vivo inhibitory potential of crude aqueous extract of neem leaves and pure neem compound (Azadirachtin) on the replication of Dengue virus type-2. In vitro antiviral activity of aqueous neem leaves extract assessed in C(6/36) (cloned cells of larvae of Aedes albopictus) cells employing virus inhibition assay showed inhibition in dose dependent manner. The aqueous extract of neem leaves at its maximum non-toxic concentration of 1.897 mg/ml completely inhibited 100-10,000 TCID(50) of virus as indicated by the absence of cytopathic effects. The in vivo protection studies with neem leaves extract at its maximum non-toxic concentrations 120-30 mg/ml resulted in inhibition of the virus replication as confirmed by the absence of Dengue related clinical symptoms in suckling mice and absence of virus specific 511 bp amplicon in RT-PCR. The pure neem i.e. Azadirachtin did not reveal any inhibition on Dengue virus type-2 replication in both in vitro and in vivo systems.     

益气补肾方对胃癌细胞侵袭转移能力的影响

目的 探讨益气补肾方对胃癌细胞SGC-7901侵袭转移能力的影响.方法 将胃癌SGC-7901细胞接种于RPMI-1640培养液中,益气补肾方水溶液配制成1、2、4、8、16、32、64mg/ml 7个终浓度,设肿瘤细胞为空白对照组,在96孔板内每个剂量6个平行孔,重复3次,37℃、5％CO2培养箱孵育48h.采用MTT法检测不同浓度益气补肾方对SGC-7901细胞增殖的抑制率;采用RT-PCR法检测其对SGC-7901细胞基质金属蛋白酶-2(MMP-2)和基质金属蛋白酶抑制酶-2(TIMP-2)的基因表达活性的影响. 结果 不同浓度的益气补肾方对SGC-7901细胞都有一定的抑制作用,以16mg/ml和32mg/ml浓度抑瘤作用较好,抑制率分别为53.17％和56.47％;MMP-2 mRNA在32mg/ml组同空白对照比较,差异有统计学意义(P＜0.05),并且16mg/ml组也能下调MMP-2 mRNA的表达,但差异无统计学意义(P＞0.05). 结论 益气补肾方能明显抑制胃癌细胞SGC-7901侵袭转移能力,且以32mg/ml浓度最好.     

黄连素合用环孢素A对小鼠皮肤移植排斥反应的影响

目的观察黄连素合用环孢素A抗同种异体小鼠皮肤移植排斥反应的影响,探讨其作用机制。方法以BALB/c小鼠为供体,以C57BL/6小鼠为受体,采用背-背皮肤移植手术法制备模型。将受体小鼠按随机数字表法分为模型组、黄连素组、环孢素A组、联合组,每组20只;另取20只健康C57BL/6小鼠作为假手术组。造模后黄连素组小鼠腹腔注射黄连素100 mg/kg,环孢素A组小鼠腹腔注射环孢素A注射液10 mg/kg,联合组腹腔注射黄连素100 mg/kg及环孢素A注射液5 mg/kg,假手术组和模型组小鼠腹腔注射等体积0.5%羧甲基纤维素钠。1次/d,连续10 d。记录受体小鼠移植皮片的存活时间;采用ELISA法检测血浆Th1类细胞因子[IL-2、γ-干扰素(interferon-γ,IFN-γ)]和Th2类细胞因子(IL-4、IL-10)水平;采用流式细胞术检测脾脏T淋巴细胞亚群CD4+CD25+比例。结果与模型组比较,各给药组受体小鼠移植皮片的存活时间延长(P<0.01);联合组移植皮片存活时间较黄连素组或环孢素A组延长(P<0.01)。与模型组比较,联合组血浆IL-2[(11.55±3.14)pg/ml比(19.85±2.42)pg/ml]、IFN-γ[(26.41±6.20)pg/ml比(57.23±10.15)pg/ml]水平降低,IL-4[(192.45±70.12)pg/ml比(61.09±21.61)pg/ml]、IL-10[(106.79±27.83)pg/ml比(40.08±11.23)pg/ml]水平升高(P<0.05),脾脏CD4+CD25+调节性T细胞比例[(7.65±2.42)%比(3.69±0.83)%]升高(P<0.01)。结论黄连素合用环孢素A通过促使Thl向Th2细胞的偏移、诱导免疫耐受、刺激CD4+CD25+调节性T细胞的表达等途径,抑制同种异体小鼠的皮肤移植排斥反应。     

大蒜油激活鼠肝枯否细胞抗癌作用的实验研究

目的体外实验明确大蒜油能否增强肝枯否细胞(kupffer cell,KC)的抗肿瘤活性。方法采用酶消化法提取小鼠肝脏枯否细胞,分别以含大蒜油浓度为1200、600、300、150、75、37．5μg/ml的培养液培养枯否细胞24h。换洗培养液后,按10∶1效靶比加入小鼠结肠癌细胞CT26,共同培养24h。用MTT法测定活细胞数量,以未加药的KC/CT26共同培养和KC、CT26单独培养为对照组。结果KC的杀癌率为10．49%,经一定浓度大蒜油激活后,KC的杀癌率明显增强,并且杀癌率随大蒜油浓度的升高而增强,大蒜油浓度分别为1200、600、300、150、75、37．5μg/ml的杀癌率分别为91．91%、75．92%、73．71%、42．38%、37．94%和18．07%；300μg/ml组与600μg/ml组比较、37．5μg/ml组与不用大蒜油激活组比较差异均无显著性。结论大蒜油能激活肝枯否细胞,从而增强其抗癌活性。300μg/ml的大蒜油浓度可能是一个恰当的选择。     

Evaluation of the toxicity of Solanum lycocarpum in the reproductive system of male mice and rats

Powdered Solanum lycocarpum fruit is commonly used to treat diabetes, but apparently no studies have been conducted to evaluate potential adverse side effects. In the present paper the toxic effect of S. lycocarpum was evaluated in adult male Wistar rats and Swiss mice. The administration of an aqueous extract prepared using a powder obtained from the S. lycocarpum fruit at two different dose levels (60 mg/15 ml and 120 mg/15 ml distilled water for rats and 30 mg/15 ml and 60 mg/15 ml distilled water for mice, twice daily for 5 days in each case) did not produce body weight variations in either species although a significant weight change was observed in some organs. Significant weight loss was observed only in the ventral prostate of mice receiving the high dose treatment. These results suggest a toxic effect of S. lycocarpum on the male reproductive system of the Swiss mouse, with possible antiandrogenic activity, but there was no apparent antifertility activity in rats at the doses given.     

蛇莓对人食管癌细胞作用的研究

本文以体外长期培养的 Eca-109细胞系为实验材料,以分裂指数、集落形成、生成曲线、~3H-胸腺嘧啶核苷标记为观察指标,研究了中药蛇莓在体外对人食管癌细胞的生长、分裂、增殖、再繁殖能力和 DNA 合成的影响。结果表明,蛇莓水提取物相当于5mg/ml、10mg/ml、15mg/ml 时,对细胞生长有较强的抑制效应;蛇莓15mg/ml 作用48小时可使细胞完全丧失再繁殖能力。蛇莓10mg/ml、15mg/ml 作用48小时对细胞有丝分裂的抑制率分别为46%和49%,但对细胞 DNA 合成仅呈轻度抑制效应。     

丹参酚酸B镁对自由基损伤人主动脉内皮细胞的影响

目的 研究丹参水溶性成分——丹参酚酸B镁对人主动脉内皮细胞生长增殖的影响和对自由基损伤内皮细胞的影响,以进一步了解丹参酚酸B镁的心血管药理作用机理。方法 实验中使用第3～6代的人主动脉内皮细胞(human aortic endothelial cell,HAEC),采用形态学和MTT法观察不同浓度药物对细胞增殖的影响;采用葡萄糖一葡萄糖氧化酶造成的氧自由基损伤细胞模型观察药物的作用;透射电镜观察细胞超微结构的变化。结果 丹参酚酸B镁1．0mg／ml和0．5mg／ml两个剂量对HACE有明显的细胞毒作用(P<0．01)。低于0．2mg／ml的浓度对细胞增殖无不良影响;丹参酚酸B镁对自由基损伤细胞有明显的保护作用。电镜结果显示其可以保护线粒体等细胞超微结构。结论 丹参酚酸B镁对HAEC细胞毒性较低;对自由基损伤细胞有明显的保护作用。