地高辛配基标记DNA打点杂交和原位杂交检测钩端螺旋体

应用一种新的非放射标记物地高辛配基(DIG)制备黄疸出血群赖型017株钩端螺旋体DNA(017DNA)探针,与~(32)P和光敏生物素标记017DNA探针对照打点杂交检测钩端螺旋体DNA。结果,上述三种探针均能检测到不同群型的问号状钩体,DIG探针的敏感性为0.1pg,~(32)P和光敏生物素探针的敏感性分别为1 pg和10pg。以上探针均不能检测双曲钩体patoc型Patocl株、细螺旋体illini型3065株,与其它致病菌及人白细胞DNA也无明显杂交信号。DIG标记017DNA探针原位杂交检测感染017株钩体的豚鼠系列组织切片和血浆涂片,以对比度极大的着色反应,清晰地显示各组织和血浆中的钩体形态。细螺旋体illini型3055探针和HBV-DNA探针不能检测到上述标本中的钩体.     

生物素标记DNA探针的研制(简报)

目前国内外应用核酸分子杂交技术检测外源基因以诊断病毒等微生物的感染,探测内源基因的多态性和缺陷以诊断遗传病和研究肿瘤。其中基因探针(即DNA探针)是关键,常用~32P放射性同位素标记DNA作探针。由于~32P脱氧核苷三磷酸半衰期短、价钱昂贵、主要依靠进口、以及保存和防护运输等原因,使基因诊断技术不能广泛应用。本文参考国外经验,用生物素标记的DNA作探针巳获得成功. 生物素标记的DNA是已知片断,例如作者用生物素标记HBV-DNA及Y染色体特异的DNA等.标记方法既采用传统的缺口平移法,以Bio-ll-duTP(BRL公司产品)为标记底物,标记双链DNA还     

DNA的生物素标记

非放射性标记探针的应用,对于推广基因诊断技术有重要意义。本文研究酶促和光促两法进行生物素标记DNA。以碱性磷酸酶偶联体系检测两法得到的生物素探针及其分子杂交产物,显色灵敏度近1pg,杂交灵敏度达5pg,而5～10×10~5倍的无关DNA没有或痕量非特异性显色。表明此两种生物素标记探针以及所使用的分子杂交和显色体系皆可用于病毒或真核基因的分析和检测。     

生物素标记DNA探针测定人性别

白细胞或胎儿绒毛组织染色体DNA经限制酶Hae (?)消化后,用光生物素(photo-biotin)标记人Y染色体特异的3.4 kb DNA片段作探针,进行Southern印迹杂交,并以生物素结合蛋白-碱性磷酸酶体系显示生物素探针杂交信号。结果表明,0.1μg男性DNA可显示清晰的信号,而5μg女性DNA则无信号出现;平行试验证明生物素探针测定人性别的结果与32P标记探针完全一致。提示生物素探针可用于X连锁遗传病、性异常,运动员体检,法医学及异性别骨髓移植方面的性别分析。     

光敏生物素和~(32)P标记DNA打点杂交检测钩端螺旋体

应用光敏生物素和~(32)P标记黄疸出血群赖型017株钩端螺旋体DNA(简称017DNA)作为探针,打点杂交检测问号状钩体。结果表明:两种探针均能检测不同群、型的问号状钩体DNA,最小检测量分别为5pg和1pg;与双曲钩体patoc型PatocⅠ株、细螺旋体属illini型3055株及其他致病菌和正常人血清未发现明显杂交信号。提示光敏生物素制备的017DNA探针可以用于检测钩体,也可应用于钩体病的早期诊断和流行病学调查。     

生物素标记的 HPV11、16、18、51型 DNA 探针的制备

通过大量培养克隆有 HPV11、16、18、51型 DNA 序列的菌株,扩增其质粒,并采用碱变性法提取、纯化质粒 DNA,然后对质粒进行酶切、电泳回收 HPV DNA 片段并进行生物素标记,制备出生物素标记的 HPV11、16、18、51型 DNA 探针.用斑点杂交方法检测探针的灵敏度为 HPV11、16型0.05pg,HPV18 0.25 pg,HPV51 0.1 pg.     

DNA探针的生物素标记试剂研究——Ⅱ.生物素化补骨脂素的合成和应用

4,5’,8-三甲基补骨脂素经三步反应合成了光生物素试剂——N,N’-二甲基-N-生物素酰-N’-(4’-亚甲基-4,5’,8-三甲基补骨脂素)-3,6-二氧-辛二胺(V)。(V)在光照下可与DNA探针中嘧啶环结合成生物素标记的DNA探针。     

光生物素标记探针检测乙型肝炎病毒DNA

近年来,生物素的应用越来越广泛,它不但用于病理技术,而且在临床检验和生物学领域内的用途也日益广泛。目前,进行的斑点杂交法,大多用同位素标记探针,由于同位素对人体有损伤,故生物素的利用日趋兴旺,而光生物素标记探针,既简便、省时,又快速、安全,是检验系统检测液状物质内核酸的最佳选择。有关这方面的文献,国内报道甚少。本文应用光生物素标记探针检测血清中的乙型肝炎病毒(HBV)DNA,获得了满意的结果。现介绍如下:(一)材料1.HBV DNA:带有 HBV:DNA 全基     

生物素-链霉抗生物素蛋白硷性磷酸酶体系标记检测DNA探针

本室采用近年发展的生物素—链霉抗生物素蛋白体系检测特异互补的核酸序列,先经缺口翻译制备生物素DNA探针,分子杂交后,再与链霉抗生物素蛋白—生物素—硷性磷酸酶复合物反应和显色,检测限度约50pg靶DNA,并将其结果与~(35)S标记相同的探针进行了比较。     

地高辛素、生物素标记产毒性大肠杆菌 Ⅰ型不耐热肠毒素ADN探针的制备及应用

采用随机引物法制备地高辛素、生物素和~(32)P标记产毒性大肠杆菌Ⅰ型不耐热肠毒素(LT_1)DNA探针。地高辛素、生物素和~(32)P LT_1探针分别在DNA斑点杂交试验中检测到0.1pg、1pg和0.1pg的质粒DNA,在菌落原位杂交试验中检测到12、120和12个细菌/ml,在粪便斑点杂交试验中检测到24、240和24个细菌/ml。采用RNA酶A和蛋白酶K消化处理滤膜,消除了假阳性,使得地高辛素、生物素LT_1探针的特异性与~(32)PLT_1探针完全一致。检测143株自腹泻病人分离的大肠杆菌,14株(9.79％)阳性,3种探针结果相同。     

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.     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

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…     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

Acupuncture Combined with Spinal Tui Na for Treatment of Primary Dysmenorrhea in 30 Cases

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.     

Luo Lingjie's Experience in Treating Chronic Nephropathy

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.     

Dr.Zhang Ren's Experience in the Acupuncture Treatment of Different Diseases with the Same Therapeutic Principle

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.     

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.