甲醛对人外周血淋巴细胞遗传毒性的研究

目的:研究甲醛对人外周血淋巴细胞染色体的影响。方法:用不同浓度(5、25、125、500μmol/L)的甲醛溶液处理培养中的人外周血淋巴细胞,观察其微核率及SCE频率的变化。结果:低浓度(5、25μmol/L)甲醛处理后,人外周血淋巴细胞微核率和SCE频率与阴性对照组相比,无明显增加(P>0.05);而甲醛浓度(125、500μmol/L)较高时,细胞微核率和SCE频率均显著高于阴性对照组(P<0.05或P<0.01)。结论:较高浓度甲醛对人外周血淋巴细胞染色体有不同程度的损伤作用。     

褪黑素对人淋巴细胞姐妹染色单体交换和增殖指数的影响

目的观察褪黑素对体外培养人外周血淋巴细胞的姐妹染色单体交换(SCE)和细胞增殖动力学的影响。方法以33.4μg/L的丝裂霉素(MMC)为阳性对照，0.5％乙醇为阴性对照，用0.01，0.10，1.00mmol/L褪黑素分别预处理细胞后37℃±1℃体外培养72h，观察褪黑素处理组及丝裂霉素加褪黑素处理组细胞的SCE频率和淋巴细胞增殖指数。结果单独用0.01，0.10，1.00mmol/L褪黑素处理组的SCE频率与空白对照组比较，未见有统计学意义，而丝裂霉素加不同浓度褪黑素处理组的SCE频率与阳性对照丝裂霉素处理组比较差别有显著性，呈明显降低。淋巴细胞增殖指数只有1.00mmo1/L褪黑素处理组较空白对照组明显降低。结论褪黑素无遗传毒性，而且在超生理浓度时具有抗诱变作用，并对细胞增殖动力学有一定影响。     

二甲苯对正常人外周血淋巴细胞SCE频率的影响

目的探讨二甲苯对正常人外周血淋巴细胞DNA的损伤作用。方法采用染色体分析技术,对体外培养的外周血淋巴细胞姊妹染色单体交换(SCE)频率进行观察。结果3.0、6.0 mmol/L二甲苯组淋巴细胞中的SCE计数平均值分别为7.533±0.234、10.933±0.325,与对照组(2.800±0.242)比较,差异具有极显著性(t=14.084、20.085,P<0.001)。结论二甲苯对正常人外周血淋巴细胞DNA有显著损伤作用。     

铅的致突变作用及其对女性生殖机能的影响

对44名铅作业五年以上的女工及39名对照进行外周血淋巴细胞姐妹染色单体交换(SCE)及染色体畸变(CA)等检测,发现铅作业组SCE、CA、血铅、尿铅及尿粪卟啉均显著高于对照组,但畸变均甚微小且两组淋巴细胞经不同浓度丝裂霉素C诱发之SCE 率均呈显著相关,初步提示铅作业不致对正常机体造成明显的遗传毒作用。     

川芎嗪逆转肺癌细胞株多药耐药性的研究

目的探讨中药川芎嗪(TMP)逆转肺腺癌SPCA-1细胞株耐药性的作用.方法人肺腺癌SPCA-1细胞株,以阿霉素诱导耐药至终浓度为0.4μg/ml,MTT比色法测定TMP对耐药细胞的耐药性逆转作用.结果100mg/L和320mg/L TMP对细胞的抑制率均小于5%,两者无显著差异.100mg/LTMP加丝裂霉素(MMC)组与相应浓度MMC组比较,细胞抑制率有显著性差异(P＜0.05).加入320mg/L TMP的阿霉素(ADM)、长春地辛(VDS)、MMC组与相应浓度各药物组比较,其细胞抑制率均有显著性差异(P＜0.05),其中1PPC VDS+TMP、1PPC MMC+TMP组与相应药物组比较,差异非常显著(P＜0.01).顺铂(C-DDP)加TMP组与相应浓度C-DDP组比较,细胞抑制率均无显著性差异(P＞0.05).结论无明显细胞毒浓度的TMP可显著逆转SPCA-1人肺腺癌细胞株对ADM、VDS、MMC的耐药性,但对CDDP介导的耐药无影响.     

青藤碱对T淋巴细胞活化增殖的影响

[目的]观察青碱藤(SINO)对T淋巴细胞增殖和活化的影响及其细胞免疫调控机制.[方法]培养Jurkat细胞,分别加入不同浓度的SINO(终浓度分别为1、0.5、0.1 mmol/L),采用四甲基偶氮唑盐(MTT)法检测细胞增殖率;培养Jurkat细胞,分别设空白对照组,甲氨喋呤(MTX)阳性对照组(剂量为5 mg/L),不同浓度的SINO组(终浓度分别为1、0.5、0.1mmol/L).采用流式细胞术检测各组细胞周期.无茵分离Wistar大鼠肠系膜淋巴结淋巴细胞,以1、0.5、0.1 mmol/L SINO预培养60 min后,分别加入刀豆蛋白(ConA,终浓度为10 mg/L)或佛波醇酯(PDB,终浓度为0.20μmoL/L) 离子霉素(ionomycin,终浓度为1 mg/L)继续培养48 h,以抗大鼠CD3和CD71单抗标记后,采用流式细胞术检测各组CD3 CD71 表达情况.[结果]不同浓度SINO呈浓度依赖性抑制淋巴细胞增殖,且主要抑制Jurkats细胞G0/G1期.MTX作用于S期;ConA或PDB ionomycin刺激可显著升高CD3 CD71 表达(均P<0.01),1、0.5 mmol/LSINO可显著抑制ConA刺激下的CD3 CD71 表达(P<0.01),1 mmol/L SINO可显著抑制PDB ionomycin刺激下的CD3 CD71 表达(P<0.05).[结论]SINO可抑制T淋巴细胞活化和增殖,将细胞阻断于G0/G1期,其作用可能与下调T细胞转铁蛋白受体的表达,减少细胞对铁离子摄入有关.     

中药大黄、槐米、红花提取物的致突变作用

采用人血淋巴细胞姐妹染色单体互换(SCE)方法测试了三种中草药——大黄、槐米和红花水提取物的致突变性。结果表明:大黄、槐米和红花水提取物的浓度为2.5、5.0、7.5和10mg/ml时诱发的SCE频率为7.0±0.52～15.76±0.81,与空白对照组自发SCE频率(6.12±0.40)相比,除大黄水提取物2.5mg/ml剂量组以外.均具高度显著性差异(P<0.005或P<0.001)。三种中草药水提物的应用剂量和SCE频率之间存在明显的剂量效应关系。揭示此三种中草药水提物对人血淋巴细胞具有致突变作用。大黄,槐米水提物并能抑制人淋巴细胞的生长和分裂增殖。     

川芎嗪逆转肺癌细胞株多药耐药性的研究

目的探讨中药川芎嗪(TMP)逆转肺腺癌SPCA-1细胞株耐药性的作用.方法人肺腺癌SPCA-1细胞株,以阿霉素诱导耐药至终浓度为0.4μg/ml,MTT比色法测定TMP对耐药细胞的耐药性逆转作用.结果100mg/L和320mg/L TMP对细胞的抑制率均小于5%,两者无显著差异.100mg/LTMP加丝裂霉素(MMC)组与相应浓度MMC组比较,细胞抑制率有显著性差异(P＜0.05).加入320mg/L TMP的阿霉素(ADM)、长春地辛(VDS)、MMC组与相应浓度各药物组比较,其细胞抑制率均有显著性差异(P＜0.05),其中1PPC VDS+TMP、1PPC MMC+TMP组与相应药物组比较,差异非常显著(P＜0.01).顺铂(C-DDP)加TMP组与相应浓度C-DDP组比较,细胞抑制率均无显著性差异(P＞0.05).结论无明显细胞毒浓度的TMP可显著逆转SPCA-1人肺腺癌细胞株对ADM、VDS、MMC的耐药性,但对CDDP介导的耐药无影响.     

牛磺酸对氧化应激损伤的神经保护作用

目的:探讨牛磺酸对过氧化氢(H2O2)引起的神经元损伤的保护作用?方法:采用不同浓度的H2O2处理神经元,制备体外氧化应激模型,造模前24 h分别给予5?15?25 mmol/L牛磺酸预处理?采用特异性荧光探针DCFH－DA检测神经元活性氧自由基水平,检测乳酸脱氢酶(LDH)释放率反映神经元损伤程度,用免疫印迹法检测脑源性营养因子(brain－derived neurotrophic factor,BDNF)及突触相关蛋白的表达水平?结果:与Control组比较,不同浓度的H2O2(25?50?100 μmol/L)均能使LDH向胞外释放增多(P < 0.05),15?25 mmol/L的牛磺酸均能减少H2O2引起的LDH的释放(P < 0.05)?100 μmol/L H2O2使神经元胞内活性氧水平升高,仅25 mmol/L的牛磺酸能抑制H2O2诱导的胞内活性氧的增多(P < 0.05)?100 μmol/L H2O2处理神经元导致BDNF?突触相关蛋白Synapsin和Spinophilin表达水平下降,给予25 mmol/L的牛磺酸能部分逆转H2O2诱导的蛋白水平的下降(P < 0.05)?结论:牛磺酸能够减轻H2O2引起的神经元损伤,具有较好的神经保护作用?     

免疫抑制剂对人外周血活化T淋巴细胞凋亡的影响

目的研究免疫抑制剂霉酚酸(MPA)和环孢素A(CsA)对人外周血活化T淋巴细胞凋亡的影响,并探讨其作用的途径及机理.方法以植物血凝集素M活化人外周血T淋巴细胞,光学显微镜及透射电镜观察细胞凋亡的形态学特征,琼脂糖凝胶电泳检测DNA断裂,流式细胞仪分析细胞膜联蛋白V(Annexin V)表达.结果MPA作用后,外周血活化T淋巴细胞出现凋亡特征性形态改变和DNA梯形条带,CsA作用后则无此表现.0.1～10mmol/L的MPA作用外周血活化T淋巴细胞24、48h,Annexin V阳性细胞均明显增加(P＜0.05或0.01),并呈药物浓度依赖性(r=0.752,P＜0.01)和作用时间依赖性(r=0.583,P＜0.01);0.1～1mmo/L CsA作用外周血活化T淋巴细胞24、48h,Annexin V阳性细胞均明显减少(均P＜0.05).结论治疗浓度的MPA可诱导人外周血活化T淋巴细胞凋亡,CsA则抑制活化T淋巴细胞凋亡.     

Value of D-Dimers in patients with acute aortic dissection

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.     

Research of combined liver-kidney transplantation model in rats

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.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

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.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

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.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

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.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

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.     

Electro-Acupuncture Combined with the Trigger Point Needle-Embedding for Treatment of Primary Trigeminal Neuralgia in 31 Cases

In recent years, the author of this essay has applied electro-acupuncture combined with the trigger point needle-embedding for treatment of primary trigeminal neuralgia in 31 cases, yielding satis- factory results as reported in the following.     

Investigation of Matrix Metalloproteinase -1, 2 and tissue inhibitor of matrix metalloproteinases-1 in Endometriosis

Objective： To explore the role of matrix metalloproteinase-1,2 （MMP-1, MMP-2） and tissue inhibitor of matrix metalloproteinases-1 （TIMP-1） in endometriosis. Methods： The eutopic and ectopic endometria from 40 subjects suffering from endometriosis and regular.endometria from 40 subjects （excluding endometriosis） were collected and examined by in situ hybridization technology and western blot assay. Results： Both expressions of MMP-1 and -2 were stronger in ectopic endometrium and eutopic endometrium than in normal endometrium. On the contrary, the expression of TIMP-1 in ectopic endometrium and eutopic endometrium was lower. The differences were significant （P 〈 0.01 ）. Moreover, there was no relationship among the expressions of MMP-1, 2 and TIMP-1 in ectopic endometrium. Conclusion： The expressions of MMP-1, 2 and TIMP-1 lose balance and lack of periodic changes in ectopic endometrium , which explains the biological invasive behavior of endometriosis. It was suggested-that regulating the balance between the MMPs and TIMP-1 should be an ideal therapeutic target to endometriosis.     

Shi Da-zhuo (史大卓) —An outstanding cardiologist of integrative medicine

Prof. SHI Da-zhuo, Ph.D., male, was born on March 20, 1960. Prof. SHI entered the Ph.D. program in 1990 at the China Academy of Chinese Medical Sciences under the supervision of Prof. CHEN Ke-ji, majoring in the treatment of cardiovascular diseases. After receiving his Ph.D. degree in 1993, Prof. SHI started working at the Cardiovascular Center in Xiyuan Hospital affiliated to China Academy of Chinese Medical sciences.     

Persist in and Carry Forward the Integrative Medical Research——Speech at the 6th National General Congress of Chinese Association of Integrative Medicine by Academician CHEN Zhu,Minister of Ministry of Health

The 6th National General Congress of Chinese Association of Integrative Medicine （CALM） was convened at 19-20, April 2008 in Beijing. Academician CHEN Zhu, the minister of Ministry of Health indicated at the congress that the integration of Chinese and Western medicine is very well in keeping with the situation of our country and the general rule of development in medical science; and as a good integration of Chinese medicine and Western medicine, it is mutually beneficial and advantageous to both of them. Seeing the creativity shown in integrative medical investigation in theoretic and methodological sides, we should and must persist in and develop it.