新复苏MDCK细胞培养甲型H3N2流感病毒方法的优化

目的优化甲型H3N2流感病毒在新复苏的犬肾细胞(MDCK)上的培养条件,提高该病毒在新复苏细胞上培养的分离效果。方法选取6例复核鉴定过的甲型H3N2病毒株,以吸附法分别接种于新复苏的MDCK细胞上培养,检测收获病毒液HA滴度,通过比较不同的细胞胞龄、细胞代次、病毒接种吸附时间对甲型H3N2流感病毒易感性的影响,确定最佳培养条件。结果不同胞龄MDCK细胞接种H3N2病毒后,胞龄为3 d、4 d的细胞所收获的病毒液HA滴度均明显高于其他组,差异有统计学意义(F=1. 279,P=0. 027);对复苏后第2代、第3代、第4代细胞进行接种后,H3N2病毒HA均明显高于第一代细胞,差异有统计学意义(F=0. 765,P=0. 008);病毒接种吸附时间(1～2 h)对甲型H3N2病毒HA滴度没有明显影响,差异无统计学意义(F=2. 743,P=0. 178)。结论甲型H3N2病毒接种于新复苏MDCK细胞最佳培养条件为:选用复苏后传代培养至第二代及以后、胞龄3～4 d的MDCK细胞进行接种,接种吸附时间1～2 h之内,可获得HA滴度较高的甲型H3N2流感病毒液。     

犬肾细胞培养流感病毒条件的优化

目的 对影响流感病毒细胞分离培养的因素进行优化,得到细胞分离培养流感病毒的最佳方案。方法 将4种型别流感毒株接种至犬肾上皮细胞（MDCK）,以不同接种量、吸附时间、培养时间以及TPCK胰蛋白酶浓度进行病毒分离培养,以流感病毒红细胞凝集实验的血凝滴度作为指标对流感分离培养结果进行评价分析。结果甲型H1N1流感病毒、季节性流感病毒H3N2、乙型Victoria系流感病毒、乙型Yamagata系流感病毒在培养过程中的最适条件分别为：接种量为200、200、250、300μL/孔,吸附时间为1.5、1.5、2.0、2.0 h,TPCK胰酶浓度为1.0、2.0、2.0、1.5 mg/mL,培养时间为96、72、120、120 h。结论 成功对4种亚型流感病毒在MDCK细胞中的培养条件进行了优化,在培养流感病毒时应按照不同型别选取不同的培养条件。     

Real-Time PCR与流感病毒分离关系研究

目的研究提高流感病毒分离率的方法。方法 Real-Time PCR检测500份流感监测病例,选择甲型流感H1N1、H3N2和乙型流感阳性及阴性样品各10份共计40份,分别接种MDCK细胞和鸡胚,用红血球凝集试验测定病毒滴度,以血凝抑制试验鉴定毒株型别。结果阳性样品中,MDCK细胞分离出季节性甲型流感H1N1型8份、H3N2型7份、乙型流感8份;鸡胚分离出季节性甲型流感H1N1型3份、H3N2型0份、乙型流感5份。阴性样品中,MDCK细胞分离出季节性甲型流感H1N1型3份、H3N2型3份;鸡胚分离出季节性甲型流感H1N1型2份、H3N2型0份。结论 MDCK细胞分离流感病毒时,Ct值已经在阴性范围之内的样品也应进行病毒分离,以提高病毒分离率;鸡胚分离流感病毒时,应选择MDCK细胞接毒一代且滴度达到1∶128的强毒株进行分离。     

MDCK、Vero和Hep-2细胞共培养分离甲型H1N1型流感病毒

目的用MDCK、Vero和Hep-2细胞共培养体系,分离甲型H1N1流感病毒,提高流感监测效率及缩短临床诊断周期。方法选取4株经国家流感中心复核鉴定、本实验室保存的甲型H1N1流感病毒,用病毒培养液1:2稀释后分别接种MDCK、Vero和Hep-2共培养细胞瓶和MDCK细胞瓶,每组设空白对照,用生理盐水代替接种。经35℃、5%CO2培养后记录甲型H1N1型流感病毒毒株在共培养细胞瓶和MDCK细胞瓶中的细胞病变效应(CPE)、血凝滴度和荧光定量PCR反应的CT值。结果培养后,2组接种流感病毒的细胞瓶均出现典型细胞病变,MDCK细胞瓶CPE略强于共培养细胞瓶,分离物-70℃冻融2次后检测血凝滴度,2组接种流感病毒的细胞瓶内分离物,血凝滴度均(1∶32;提取分离物核酸,荧光定量PCR检测,CT值均(20。结论用MD-CK、Vero和Hep-2细胞共培养体系可以分离流感病毒,同时还可分离鉴定其它呼吸道病毒。     

H3N2流感病毒冷适应株的无血清培养

目的：探索无血清培养H3N2流感病毒冷适应株的适宜条件。方法以无血清适应的Vero细胞为介质,对流感病毒冷适应株（H3N2）的培养条件进行优化,以得到较优的基础培养基、pH值、TPCK胰酶添加量及其补加时间、病毒接种量和病毒收获时间。结果 H3N2流感病毒冷适应株能够感染无血清适应的Vero细胞;经过优化,病毒培养液适宜pH为7．15～7．64, BSA和TPCK胰酶添加量均为0．8～1．2μg／ml,细胞培养36h接种病毒,接种量MOI为0．05～0．10,于25℃培养168h收获时病毒效价达最高。结论优化了H3 N2流感病毒冷适应株无血清培养的适宜条件。     

2009年成都市流感活动情况及H3N2亚型流感病毒HA1基因特性分析

目的 分析2009年成都市流感流行情况,探讨甲3流感病毒(H3N2)亚型分离毒株的流行及HA1基因变异和进化.方法 MDCK细胞对咽拭子样品进行病毒分离鉴定,提取病毒核酸,用RT-PCR法扩增HA1基因,对H3N2分离株核酸及氨基酸序列进行亲缘关系分析.结果 甲型流感H1N1、H3N2、甲1、B型流感病毒分离率分别为2...     

甲型H1N1流感病毒致宿主细胞脱氧核糖核酸氧化损伤的研究

目的:通过检测DNA损伤标志物8-氧鸟嘌呤脱氧核苷(8-oxo-dG)在甲型H1N1型流感病毒感染MDCK细胞中的表达,初步探讨甲型H1N1型流感病毒诱导细胞凋亡的脱氧核糖核酸(DNA)损伤机制.方法:MDCK细胞培养后.甲型H1N1流感病毒感染继续培养0h、1h、3h、6h、12h、24h、48h,细胞爬片免疫组织化学方法检测各时间点DNA损伤标志物8-oxo-dG的表达.结果:甲型H1N1流感病毒感染后各时间点实验组MDCK细胞8-oxo-dC的表达均显著高于相应的正常对照组(P<0.05),病毒感染各组间两两比较发现各组间差异显著.结论:甲型H1N1流感病毒感染能造成宿主细胞DNA氧化损伤.     

纳米银对流感病毒H3N2灭活作用的探讨

[目的]探讨纳米银(Nanosilver,NaAg)对流感病毒H3N2的灭活作用。[方法]采用血球凝集试验、鸡胚培养法、MTT分析法、血球吸附试验探讨NaAg对流感病毒H3N2的灭活作用。利用透射电镜、流式细胞仪检测病毒诱导细胞的凋亡。[结果]NaAg/H3N2组血球凝集试验效价为1∶2,鸡胚尿囊液血凝效价低于1∶2,流感病毒H3N2对照组血球凝集试验效价、鸡胚尿囊液血凝效价均为1∶1024,二者比较差异具有显著性意义(P<0.001);NaAg溶液在狗肾MDCK细胞上最大无毒浓度为25μg/mL;流感病毒H3N2在MDCK细胞上半数感染浓度(TC ID50)为10-3.5/0.1 mL。等体积的50μg/mL NaAg与40 TC ID50流感病毒H3N2溶液室温充分混和作用2 h后感染MDCK细胞,细胞的存活率为(98.16±2.67)%,而20 TC ID50流感病毒H3N2感染MDCK细胞,细胞的存活率为(35.21±1.45)%,二者比较差异具有非常显著性意义(P<0.001)。25μg/mLNaAg溶液有效抑制了20 TC ID50流感病毒H3N2诱导MDCK的细胞凋亡。[结论]纳米银对流感病毒H...     

流感病毒对MDCK细胞核转录因子表达的影响

目的研究流感病毒刺激对体外培养的MDCK细胞核转录因子表达的影响，探讨流感病毒损伤细胞的分子学机制。方法体外培养获得MDCK细胞，分别用NF-κB免疫组化方法和TransAM P65试剂盒测定血凝滴度1：64的A型流感病毒H1N1和H3N2两种亚型、B型流感病毒、紫外线照射灭活的B型流感病毒NF-κB蛋白表达和活性的动态变化。以细胞激活剂佛波酯刺激后的MDCK细胞为阳性对照，以等量生理盐水为阴性对照。结果各组细胞加入不同的流感病毒后，与对照组相比，细胞免疫组化显示NF-κB随流感病毒作用相同时间后结果出现明显差异；各组相比，B型流感病毒作用72h对NF-κB的激活作用最明显，而A型两种亚型之间无显著差异。TransAM P65试剂盒测定也得出相同的结果。结论流感病毒可激活体外培养MDCK细胞的核转录因子，且这种作用随时间而增强。     

泰安市2007-2008年度流感检测分析

目的分析泰安市2007-2008年度流行性感冒的病原学检测结果,了解泰安市流感病毒亚型分布。方法采集流感样病例(ILI)的咽拭子样品,用狗肾细胞(MDCK)进行病毒分离,采用血凝抑制试验(HI)和RT-PCR进行流感病毒型别鉴定。结果检测国家级流感监测医院ILI咽拭子样品281份,分离出流感病毒94株,阳性分离率为33.45%,经分型鉴定H3N2亚型51株,H1N1亚型1株,B型Yamagata系39株,Victoria系3株。结论2007-2008年度泰安市流感流行的优势毒株为H3N2亚型和B型Yamagata系,同时有H1N1亚型和B型Victoria系毒株的存在。     

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.