姜黄素联合顺铂对人卵巢癌SKOV-3细胞增殖的抑制作用

目的 探讨姜黄素及其联合顺铂对体外培养人卵巢癌SKOV-3细胞增殖的抑制作用.方法 将SKOV-3细胞培养并分别单独加入不同浓度姜黄素(5、10、20、40、80 μ mol/L)、顺铂(10 μmol/L)及联合作用后,用MTT法检测SKOV3细胞增殖情况.流式细胞术检测细胞凋亡率和细胞周期分布.结果 MTT法检测结果显示,不同浓度姜黄素组,随着药物浓度增加,作用时间延长,细胞的增殖抑制率上升(P＜0.05);联合用药组明显高于单一用药组(P＜0.05).流式细胞术结果显示,姜黄素能使卵巢癌SKOV-3细胞发生G2/M期阻滞,诱导细胞凋亡;随着姜黄素用药浓度增加,细胞凋亡率增高.结论 姜黄素对卵巢癌SKOV-3细胞增殖具有抑制作用,在一定范围内,这种抑制作用呈剂量-时间依赖性;姜黄素、顺铂联合应用具有协同作用.     

尾加压素Ⅱ促进乳鼠心肌成纤维细胞分泌胶原及增殖的细胞内信号转导机制

目的探讨尾加压素Ⅱ(UⅡ)促进乳鼠心肌成纤维细胞(CFs)分泌胶原及增殖的细胞内信号转导机制。方法体外培养CFs,采用免疫组织化学染色法及羟脯氨酸测定法分别观察不同浓度UⅡ作用下,CFs中磷酸化ERK1/2细胞灰度和CFs培养上清中胶原含量的变化;蛋白激酶C(PKC)抑制剂chelerythrine chloride(Che)、ERK1/2抑制剂PD98059和钙调神经磷酸酶(CaN)抑制剂cyclosporin A(CsA)各自对UⅡ诱导的细胞增殖的影响。结果在1×10-10、1×10-9、1×10-8mol/L UⅡ作用下,CFs培养上清中胶原含量均较对照组明显增加,而CFs中磷酸化ERK1/2细胞灰度均较对照组有显著降低(P<0.01);在1×10-7mol/L UⅡ作用下,上述各参数与对照组比较无统计学意义(P>0.05)。1×10-6mol/L Che+1×10-8mol/L UⅡ组、1×10-5mol/L PD98059+1×10-8mol/L UⅡ组和5μg/mLCsA+1×10-8mol/L UⅡ组的胶原含量均高于对照组而低于1×10-8mol/L UⅡ组(P<0.05)。1×10-6mol/L Che+1×10-8mol/L UⅡ组、1×10-5mol/L PD98059+1×10-8mol/L UⅡ组和5μg/mL CsA+1×10-8mol/L UⅡ组的p-ERK1/2的灰度低于对照组(P<0.01);1×10-6mol/L Che+1×10-8mol/L UⅡ组和5μg/mL CsA+1×10-8mol/LUⅡ组的p-ERK1/2的灰度高于1×10-8mol/L UⅡ组(P<0.01),而1×10-5mol/L PD98059+1×10-8mol/L UⅡ组与之比较则无统计学意义(P>0.05)。结论UⅡ具有促进CFs分泌胶原及增殖的作用,其作用可能是通过PKC/MAPK/CaN途径实现的。     

全反式维甲酸对NT2细胞系胶质瘤趋向性的影响

目的研究全反式维甲酸(ATRA)对NT2细胞系胶质瘤趋向性的影响。方法将NT2细胞分为4组:NT2组(未经ATRA干预)、NT2RA1周组(ATRA干预1周)、NT2RA2周组(ATRA干预2周)、NT2RA3周组(ATRA干预3周),采用细胞迁移分析的方法,分别检测其对U87胶质瘤细胞、无血清DMEM培养基以及含100mL/L胎牛血清DMEM培养基的趋向性。结果经ATRA干预的NT2细胞,其胶质瘤趋向性较未经干预组(NT2组)显著提高(P<0.05),对非特异性迁移趋化物如血清等的迁移则较未经干预组显著减少(P<0.05),其中NT2RA2周组胶质瘤趋向性最强,与其他各组比较差异有统计学意义(P<0.01)。结论经ATRA干预2周的NT2细胞其胶质瘤特异趋向性显著提高,有望成为临床治疗胶质瘤的新型靶向基因传递载体。     

IAA与HRP联合作用对人胰腺癌BXPC-3的细胞毒效应

目的　研究吲哚乙酸(IAA)与辣根过氧化物酶(HRP)在体外共同作用于人胰腺癌BXPC 3 细胞所产生的细胞毒效应。方法　MTT法测定IAA/HRP对BXPC 3细胞增殖的影响;流式细胞仪分析BXPC 3 细胞周期时相变化;胎盘兰(曲利本兰)排斥试验,研究IAA/HRP对BXPC 3 细胞死亡率的影响;原位细胞凋亡检测试剂盒检测IAA/HRP作用后BXPC 3细胞的凋亡。结果　IAA/HRP体外对BXPC 3 细胞有抑制生长的效应,且这种效应有浓度和时间依赖性;BXPC 3细胞在IAA/HRP作用48 h后细胞周期被阻滞在G1期和G2期;IAA/HRP作用72 h后对照组和药物组的凋亡细胞数存在着显著性差异,且凋亡细胞数有浓度依赖性。结论　IAA/HRP对胰腺癌BXPC 3 细胞有细胞毒作用,可体外抑制细胞的增殖,诱导凋亡。     

INHIBITION AND RADIATION SENSITIZING EFFECT OF INDOLEACETIC ACID COMBINED WITH HORSERADISH PEROXIDASE ON HELA CELLS

Indoleaceticacid (IAA )isagrowthhormoneforplants.ResearchinrecentyearshasshownthatIAApresentsacytotoxiceffectonhumancancersaf teritisoxidizedbyhorseradishperoxidase (HRP) .Becauseoflowtoxicityandstrongeffectonanaero biccells ,ithasattractedpeople sattentionasapro drugfortargettreatmentofcancers .ItsmechanismmightberelatedwiththefactthatIAAisoxidizedinthecellsofthelivingbodytoproducefreeradi cals.Theanaerobiccellgroupsincancersareoneofthemaincausesforradiationresistance .Therehavebeenfewr…     

雷公藤内酯醇抑制牛晶状体上皮细胞增殖

目的探讨雷公藤内酯醇(Triptolide,Tri)对体外培养的牛晶状体上皮细胞(bovine Lens epithelial cell,BLECs)增殖的抑制作用。方法取第4代对数生长期的牛LECs,培养24 h后,加入重组人表皮生长因子(recombi-nant human epithelial growth factor,rhEGF)(终浓度50μg/L)和不同浓度的Tri(40、20、10μg/L),再分别作用6、12、24、48、72 h后,采用MTT法及流式细胞仪检测增殖细胞核抗原(PCNA)在LECs的阳性表达率和增殖抑制率,观察Tri对LECs增殖的抑制作用。结果不同浓度Tri均可抑制处于增殖状态的LECs,并呈剂量和时间依赖性;72 h增殖抑制率分别达到80.09%、61.29%及39.93%。PCNA表达率在6-72 h内随浓度增高和作用时间延长有明显的下调,呈明显的时间-效应关系和剂量-效应关系,且各浓度Tri组与同一时点增殖对照组相比均有非常显著性差异(P<0.01)。结论Tri对牛晶状体上皮细胞增殖有明显的抑制作用。     

三氧化二砷诱导卵巢癌细胞株COC1发生G_1期阻滞

目的研究三氧化二砷(As2O3)诱导卵巢癌细胞株COC1凋亡的作用机理。方法用不同浓度的As2O3溶液作用人卵巢癌细胞株COC1,于不同时间点收集细胞,MTT法检测细胞生长抑制率,原位末端标记法(TUNEL)观察细胞凋亡形态学特征,流式细胞仪检测细胞凋亡率及分析细胞周期的变化。结果随着药物浓度的升高、作用时间的延长,As2O3对COC1细胞的生长抑制率逐渐升高,具有浓度和时间依赖性;COC1细胞在1.5μmol/LAs2O3作用48h就出现了凋亡形态学改变,且随着作用时间的延长凋亡细胞数量增多;在3.0μmol/L、1.5μmol/LAs2O3作用下COC1出现了明显的凋亡峰,细胞周期也出现了随着药物作用时间的延长G1期细胞比例逐渐上升,S期、G2/M期细胞的比例同时降低的现象,提示As2O3对人卵巢癌细胞株COC1有明显周期特异性生长抑制作用。结论As2O3可以诱导卵巢癌细胞株COC1发生凋亡,诱导细胞发生G1期阻滞是As2O3抑制卵巢癌细胞生长作用的可能机制之一。     

Study of the mechanism on the apoptosis induced in Human leukemia cell line K562 by the combination of indole-3-acetic acid and horseradish peroxidase

Objective To investigate the mechanisms of apoptosis induced in Human leukemia cell line K562 by the combination of indole-3-acetic acid and horseradish peroxidase. Methods Human leukemia cell line K562 were exposed to indole-3-acetic acid （IAA） at 20, 40, 60, 80 or 100 mol/L and horseradish peroxidase（HRP） at 1.2 g/mL for varying times. MTT assay was applied to detect the cell proliferation. Flow cytometry was performed to detect the arrest of cell cycle. Terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling （TUNEL） assay was used to measure apoptosis. 2, 7-dichlorofluorescin diacetate （DCFH-DA） uptake was measured to determine free radical by confocal microscope. Content of malondiadehyde （MDA） and activity of superoxide dismutase （SOD） were measured by biochemical methods. Results IAA/HRP initiated growth inhibition of K562 cells in a dose- and time-dependent manner. Flow cytometry revealed that cell cycle arrested at G1/G0 after 24 hours treatment. After 72 hours treatment, apoptotic rate of 100 mol/L IAA group increased to 43.9 %, which was 5 times that of control（P〈0.01）. Content of MDA and activity of SOD increased respectively in treatments compared with control. Meanwhile, IAA/HRP stimulated the formation of free radical, which was increased by IAA concentration-dependently. Conclusion The combination of IAAand HRP can inhibit the growth of Human leukemia cell line K562 in vitro by inducing apoptosis which is associated with the increase of free radical. The combination of IAA and HRP might be a promising chemopreventive and chemotherapeutic agent against human leukemia.     

Apoptosis of motor neurons in the spinal cord after ischemia reperfusion injury delayed paraplegia in rabbits

Objective To clarify the pathologic change of the motor neuron on spinal cord ischemia reperfusion injury delayed paraplegia. Methods The infrarenal aorta of White New Zealand rabbits （n=24） was occluded for 26 minutes using two bulldog clamps. Rabbits were killed after 8, 24, 72, or 168 hours （n=6 per group）, respectively. The clamps was placed but never clamped in sham-operated rabbits （n=24）. The lumbar segment of the spinal cord （L5 to L7） was used for morphological studies, including hematoxylin and eosin staining, the expression of bcl-2 and bax proteins in spinal cord was detected with immunohistochemistry. The apoptotic neurons in spinal cord were measured with terminal deoxynucleotidyl transferase mediated dUTP-biotin nick end-labeling of DNA fragments （TUNEL） staining. Results Delayed paraplegia occurred in all rabbits of ischemia reperfusion group at 16-24 hours, but not in sham groups. Motor neurons were selectively lost at 7 days after transient ischemia. After ischemia, the positive expression of bcl-2 protein were in the sham controls but decreased significantly as compared with that of the IR group （P〈0.01）, especially in 72 hours reperfusion. The positive expression of bax protein were also in the sham controls, but increased in the IR group, especially in 72 hours reperfusion; In addition, TUNEL study demonstrated that no cells were positively labeled until 24 hours after ischemia, but nuclei of some motor neurons were positively labeled at peak after ischemia reperfusion at 72 hours. Oenclusion Spinal cord ischemia in rabbits induces morphological and biochemical changes suggestive of apoptosis. These data raise the possibility that apoptosis contributes to neuronal cell death after spinal cord ischemia reperfnsion.     

高糖对MMP-2与TIMP-2的表达及血管平滑肌细胞增殖的影响

目的探讨高糖作用下大鼠胸主动脉平滑肌细胞基质金属蛋白酶-2(MMP-2)及其组织抑制剂-2(TIMP-2)的表达情况及高糖对血管平滑肌细胞(VSMCs)增殖的影响。方法大鼠胸主动脉平滑肌细胞培养及传代后,分为正常浓度葡萄糖组(NG组,5.5mmol/L葡萄糖)、甘露醇高渗对照组(5.5mmol/L葡萄糖+19.5mmol/L甘露醇)、高浓度葡萄糖组(HG组,25mmol/L葡萄糖)和GM6001组(25mmol/L葡萄糖+5μmol/L GM6001),在4组不同的培养环境下分别培养72h后,用RT-PCR技术检测MMP-2与TIMP-2的表达情况,同时用MTT比色法检测4种不同培养环境下VSMCs的增殖情况。结果 HG组与NG组相比,MMP-2与TIMP-2mRNA的表达增强,差异具有统计学意义(P<0.01),甘露醇高渗对照组、GM6001组与NG组相比,MMP-2与TIMP-2mRNA的表达差异无统计学意义(P>0.05);HG组与NG组相比,MMP-2与TIMP-2 mRNA的相对表达量的比值显著增加,差异具有统计学意义(P<0.01),甘露醇高渗对照组、GM6001组与NG组相比差异无统计学意义(P>0.05);HG组各时间点细胞增殖与NG组相比差异具有统计学意义(P<0.05),而GM6001组、甘露醇高渗对照组各时间点的细胞增殖与NG组相比差异无统计学意义(P>0.05)。结论高浓度葡萄糖促进血管平滑肌细胞增殖,这可能是通过MMP-2与TIMP-2表达失衡介导的。     

Effects of hormone replacement therapy on endothelial function in menopausal women

Objective To observe the effects of hormone replacement therapy (HRT) on endothelial function in menopausal women. Methods A total of 30 menopausal women were treated with 2.5 mg of Tibolone (Livial) daily. At the same time, 30 women with natural menopause without any treatment served as the control group. Endothelium-dependent (EDD), endothelium-independent (NID) vasodilatation function, and estradiol (E2) were examined by the non-invasive high-resolution ultrasonography before the treatment and at 12th, 24th, 36th and 48th week of treatment, respectively. Results After hormone treatment, E2 increased significantly and EDD was improved significantly (P<0.05), and E2 was positively related with EDD (r=0.8092, P<0.001). No change of EDD was observed in the control group whereas a significant increase was observed in the treatment group. Conclusion Endothelium-dependent vasodilatation dysfunction is prominent in menopausal women. Tibolone can help improve the condition.     

依曲替酸对角质形成细胞肝素结合表皮生长因子样生长因子mRNA的影响

目的研究依曲替酸对培养的正常人角质形成细胞(KC)增殖和肝素结合表皮生长因子样生长因子(HB-EGF)mRNA表达的影响。方法0.1和1μmol/L伊曲替酸处理正常人KC 12 h后,用噻唑蓝比色法(MTT法)和实时荧光定量逆转录聚合酶链反应(RT-PCR)法分别检测KC增殖和HB-EGF mRNA表达的改变。结果依曲替酸处理12 h后,可剂量依赖抑制KC的增殖和上调HB-EGF mRNA的表达。0.1和1μmol/L伊曲替酸分别使KC增殖抑制10.2%和14.4%,使HB-EGF mRNA增加到正常对照组的3.2和7.1倍。与对照组相比,差异均有统计学意义(P<0.05)。结论依曲替酸可剂量依赖上调HB-EGF mRNA的表达,其可能参与依曲替酸对KC增殖的抑制作用。     

重组毒素DT389-IL13的复性与纯化工艺

为了获得有较高生物活性的靶向重组毒素DT389-IL13,在大肠杆菌中高效表达DT389-IL13,并采用凝胶过滤的方法对DT389-IL13进行柱上复性及初步纯化,然后使用离子交换色谱方法进一步纯化,最后应用CCK-8细胞活力检测试剂盒检测DT389-IL13对肿瘤细胞的抑制作用.实验结果显示,经柱上复性和纯化后,DT389-IL13的纯度可达90%以上,且对脑胶质瘤细胞U251有明显的抑制作用,存在明确的剂量依赖关系,48h的半数抑制浓度为8.87×10-10mol/L.表明联合应用凝胶过滤和离子交换两种色谱方法可获得高纯度的复性蛋白,是可行的复性及纯化方案.     

丹红注射液对U937细胞SR-AⅠ及ABCA1 mRNA表达的影响

目的 以人单核细胞株U937细胞为研究对象,观察不同浓度丹红注射液对U937细胞清道夫受体AⅠ(SR-AⅠ)和ATP结合盒转运体A1( ABCA1)mRNA表达的影响,探讨其抗动脉粥样硬化的机制.方法 以100 nmol/L佛波酯诱导U937细胞48 h使其分化为巨噬细胞,再以50 mg/Lox-L DL(氧化低密度脂蛋白)孵育细胞的同时加入不同浓度丹红注射液或其他干预因素处理24 h,用实时荧光定量PCR方法检测其SR-A Ⅰ和ABCA1 mRNA的表达量.结果 与50 mg/L ox-LDL组比较,LXR-a(肝X受体激动剂)(T-090137)干预组U937细胞SR-A ⅠmRNA表达下降、ABCAl mRNA表达升高,但SR-A Ⅰ mRNA的表达无统计学意义(P＞0.05),而ABCAl mRNA的表达有统计学意义(P＜0.01);3.0 mL/L丹红注射液干预组U937细胞SR-A Ⅰ mRNA的表达升高,10.0、30.0、60.0 mL/L丹红注射液于预组U937细胞SR-A Ⅰ mRNA的表达逐渐下降,但各浓度组均无统计学意义(P＞0.05);丹红注射液干预组ABCAl mRNA的表达则呈浓度依赖性升高,但于60.0mL/L浓度时出现表达下降,3.0、10.0、30.0 mL/L干预组有统计学意义(P＜0.05).与LXR-a(肝X受体激动剂)(T-090137)干预组比较,丹红注射液各浓度干预组ABCAl mRNA表达降低,10.0、30.0 mL/L丹红注射液干预组ABCA1 mRNA的表达无统计学意义(P＞0.05).结论 丹红注射液各浓度组对50 mg/Lox-LDL干预的U937细胞SR-A Ⅰ mRNA的表达无影响,而明显增加U937细胞ABCA1 mRNA表达,尤其在浓度10.0、30.0 mL/L时增加ABCA1 mRNA表达明显.增加U937细胞ABCA1 mRNA表达可能是其抗动脉粥样硬化的重要机制.     

LEPTIN STIMULATING PROLIFERATION AND DIFFERENTIATION OF HUMAN OSTEOBLAST-LIKE CELL LINE MG63 IN DOSE-DEPENDENT AND TIME-DEPENDENT MANNERS

Objective To investigate the direct effect of leptin on osteoblast-like cell line MG63. Methods Human osteoblast-like cell line MG63 was incubated with leptin of different doses for 24, 48 and 72 h, respectively.The proliferation of MG63 was determined by methylene blue assay. Alpha1 (Ⅰ) collagen gene expression in MG63was determined by real time flourescence quantitive PCR (FQ-PCR), both with 17β-E2 as positive control.Results Leptin accelerated the proliferation and differentiation of MG63 in dose and time-dependent manners,with the best effect at 10-7 mol/L at 72 h. Compared with 17β-E2 , leptin showed a weaker promoting effect at all of the three time point: 24, 48 and 72 h. While the effects of the two hormones have an approaching trend the time prolonged. Conclusion Leptin has the effects of accelerating the proliferation and differentiation of MG63 cells in vitro, which is more enduring and later than that of 17β-E2.     

生长抑素受体家族介导的子宫内膜癌细胞系HEC-1A的生长抑制作用

目的研究生长抑素受体家族在子宫内膜癌细胞系HEC1A上的表达,并应用生长抑素类似物RC160活化生长抑素受体,观察子宫内膜癌细胞系HEC1A的生长及凋亡。方法利用RTPCR检测HEC1A细胞上的生长抑素受体。BrdU整合试验测定RC160对HEC1A细胞的抗增殖作用。TUNEL染色检测是否存在细胞凋亡。结果所有5种生长抑素受体亚型在HEC1A细胞中均有表达。RC160可抑制HEC1A细胞的生长,并具有剂量依赖性特点。在处理48h后,10-5mol/L浓度的RC160达到最大抑制效应。未检测到明显的细胞凋亡。结论生长抑素类似物RC160通过结合HEC1A生长抑素受体而抑制细胞增殖。细胞凋亡在此抑制过程中不起主要作用。     

葡萄糖、胰岛素和尿酸对猪近端肾小管上皮细胞株血红素氧合酶-1的影响

目的观察不同浓度葡萄糖、胰岛素和尿酸的培养条件下猪近端肾小管上皮细胞株(LLC-PK1)血红素氧合酶(HO-1)活性的改变,以探讨代谢相关因素在细胞水平对肾小管上皮细胞的影响。方法以LLC-PK1为研究对象,观察葡萄糖浓度为5、10、22、33 mmol/L,胰岛素浓度为0、10-9、10-8、10-7mol/L,尿酸浓度为0、0.1、0.2、0.4 mmol/L培养48 h条件下,LLC-PK1细胞HO-1活性的改变。结果0.1 mmol/L0、.2 mmol/L和0.4 mmol/L尿酸刺激48 h后,LLC-PK1的HO-1活性增加,并呈剂量依赖关系,而上述浓度的葡萄糖和胰岛素刺激48 h对LLC-PK1的HO-1活性无影响。结论一定浓度的尿酸可使LLC-PK1的HO-1活性升高,提示尿酸在细胞水平对肾小管上皮细胞的氧化应激过程产生影响。     

结缔组织生长因子对视网膜色素上皮细胞增生和黏附的调节作用

目的观察重组人结缔组织生长因子(rhCTGF)对视网膜色素上皮(RPE)细胞增生和黏附的影响。方法用CTGF蛋白、多聚赖氨酸(PLL)和胶原分别包被培养板,观察CTGF促进RPE细胞黏附的作用;用四唑盐(MTT)比色试验和流式细胞仪(FCM)测定RPE细胞增生反应。结果10-30 mg/L的CTGF蛋白提高RPE细胞的贴壁黏附能力,与未包被的对照组相比,差异有统计学意义(P<0.05);30 mg/L CTGF促进RPE细胞黏附的能力与0.1 g/L胶原的作用一致,但略低于0.1 g/L PLL的作用。MTT实验显示CTGF刺激RPE细胞生长,CTGF作用24 h刺激RPE细胞增生的能力最强。FCM测定细胞周期结果显示S期百分比随着CTGF浓度增加而逐渐增加,无血清培养的对照组S期百分比为(7.5±0.4)%,60μg/LCTGF刺激24 h后,S期百分比上升至(16.1±2.0)%。结论CTGF可以促进RPE细胞的黏附和增生,在增生性玻璃体视网膜病变等眼内增生性疾病中可能有重要意义。     

The effect of prostaglandin E1 on recovery of early renal graft functions after transplantation

Objective To investigate the effect of prostaglandin E: (PGE1) on recovery of early renal graft functions after transplantation. Methods One hundred and seven patients after renal transplantation were allocated in the treated group, and treated by conventional treatment with injection of 10 μg prostaglandin E1 additionally twice a day for 14 days. And eighty-eight patients who received conventional treatment alone after renal transplantation at the corresponding period were allocated in the control group. Indexes of the two groups, including incidence of delayed graft function and acute rejection reaction, volume of urine, serum certaintie (SCr), endogenous certainties clearance rate (CCr), the blood flow resistance in graft as well as blood viscosity (BV), and platelet aggregation rate (PAR), were determined. Results The urinary volume and endogenous certainties clearance rate of the treated group were significantly higher, but the level of SCr, incidence of renal function recovery retardation, BV, PAR and blood flow resistance in graft were significantly lower than these of the control group (P<0.05). The difference of incidence of acute rejection reaction between the two groups was insignificant (P>0.05). Conclusion Prostaglandin E1 can improve blood microcirculation and decrease the incidence of renal function recovery retardation. These effects are helpful for recovery of renal function after renal transplantation.     

川芎嗪对成体大鼠脑缺血再灌注损伤后海马齿状回细胞增殖的影响

目的研究川芎嗪(tetramethylpyrazine,TMP)对大鼠脑缺血再灌注损伤后海马齿状回(dentate gyrus,DG)细胞增殖的影响。方法成年雄性SD大鼠行2 h大脑中动脉阻塞手术,术后2 h开始腹腔注射TMP[40 mg/(kg.d)]。手术后腹腔注射5-溴脱氧尿核苷(5-bromodeoxyuridine,BrdU),末次注射24 h后处死动物,免疫组化染色观察TMP对脑缺血再灌注损伤后DG细胞增殖的作用。结果正常组和假手术组在DG有少量BrdU阳性细胞,对照组缺血后1 d阳性细胞开始增加,14 d达到高峰(P<0.05),TMP治疗组缺血后1 d损伤侧BrdU阳性细胞数开始增加,7 d达高峰(P<0.05)。结论TMP能促进缺血再灌注损伤大鼠海马齿状回内源性神经干细胞增殖。