人乳头瘤病毒DNA的限制性核酸内切酶分析

用差速离心和CsCl平衡密度梯度离心法，从收集的寻常疣中分离并纯化了人乳头瘤病毒（HPV），从中抽提病毒DNA,经四种限制性核酸内切酶消化后，其消化产物进行琼脂糖凝胶电泳。结果显示EcoRⅠ,BamHⅠ,HindⅡ,HindⅢ分别将环形的HPV DNA裂解成1、2、3、2个片段，同时以λDNA的HindⅢ片为标准核酸计算了各HPV DNA片段的分子量。     

人乳头瘤病毒、疱疹病毒Ⅱ型及人巨细胞病毒与宫颈癌关系的研究

用人乳头瘤病毒(HPV)16,18,11型、疱疹病毒Ⅱ型(HSV-2)N/BglⅡ,L/HindⅢ片段和人巨细胞病毒(HCMV)DNA等6个核酸探针,通过分子杂交技术对宫颈疾患活检标本进行了检测和分析,结果在同一标本中未发现3种病毒DNA均阳性者,但宫颈癌标本中46%HPV和HCMV DNA同时存在,2例HSV-2 DNA阳性的宫颈癌标本中有1例同时存在HCMV DNA。提示宫颈癌的病毒病因是多因素的,HPV,HSV-2和HCMV均可能有关,在宫颈癌发生过程中3者之间可能有某些内在联系。     

携带HPV16 E7病毒癌基因的重组腺病毒穿梭质粒的构建及鉴定

①目的构建携带人乳头瘤病毒16型（HPV16）E7病毒癌基因的复制缺陷型重组腺病毒穿梭质粒pAdTrack-CMV-E7。②方法应用PCR技术从宫颈癌组织中扩增E7病毒癌基因全长片段,并导入T载体进行测序,与Nucleotide中HPV16标准毒株序列比较鉴定。目的基因及穿梭质粒载体pAdTrack-CMV分别经Bgl Ⅱ和Hind　Ⅲ双酶切后连接,转化宿主菌E．coli DH5α,应用PCR法及限制性内切酶消化法双重鉴定重组质粒,并测序。③结果PCR扩增产物与Nucleotide中HPV16E7序列一致,重组穿梭质粒经Bgl　Ⅱ和Hind　Ⅲ双酶切后电泳,可观察到9220bp大小的载体条带和313bp大小的目的基因条带;将经PCR和双酶切鉴定的重组阳性克隆测序,结果证实克隆成功。④结论成功地构建了携带HPV16E7基因的重组腺病毒穿梭质粒。     

pET21b-HPV16E4重组质粒的构建及鉴定

目的 构建HPV16 E4重组表达质粒,以获得HPV16 E4活性蛋白,为进一步研究打基础.方法 从宫颈癌组织中提取DNA,用PCR方法扩增HPV16E4 DNA片段,定向克隆到原核表达载体pET21b质粒中,利用菌液PCR方法筛选重组阳性菌株.提取重组质粒,利用酶切图谱分析方法和核酸序列测定验证重组质粒pET21b-HPV16E4构建的正确性.结果 用PCR方法从宫颈癌组织中扩增出HPV16 E4片段,大小为0.3kb.从PCR筛选的重组菌株中提取重组质粒pET21b-HPV16E4,经单酶切得到5.7kb的片断,HindⅢ和BamHⅠ双酶切得到5.4kb和0.3kb两个片段,并且测序结果与已知序列相符,证实了重组质粒构建的正确性.结论 pET21b-HPV16E4重组质粒构建成功.     

人类乳头瘤病毒的实验诊断

人类乳头瘤病毒属乳多空病毒科乳头瘤病毒属，是小分子双链DNA病毒，据基因片段序列的多态性分型，目前已确定100余型。HPV亚临床感染和潜伏状态感染是尖锐湿疣感染状态的14倍，仅靠临床症状判断，则低估了HPV感染的严重性。随着核酸杂交技术和核酸扩增技术的发展，HPV的高感染率业已逐渐被人们认识。     

人基因组λcharon28小基因库的组建与β地中海贫血基因克隆的分离(简报)

为了深入研究我国β地中海贫血(简称β地贫)基因突变的分子机制,我们以一名β地贫纯合子患儿(伍××,女,3岁,汉族,广西全州人)的脾为材料,提取了其基因组DNA,经Hind Ⅲ酶彻底消化后,电泳分离其7.5±1kb的DNA片段;再经β珠蛋白特异探针探测证明其中含有β珠蛋白基因序列后,以此片段作为插入体。以非超离心法制备了λ charon 28 DNA,经Hind Ⅲ酶消化得24kb及16kb两左右臂作     

痘苗病毒天坛761株基因组无性繁殖系的建立

痘苗病毒天坛761株曾在我国用于大量人群的防防接种。其基因组用 Hind Ⅲ消化可分为16个片段。本文pPAT153为载体,建立了 HindⅢ-D、E、F,G、H、I、J、K、L、M、N、O、P 共13个片段的无性繁殖系,并就天坛761株基因组与文献中报道的其他痘苗毒株的差异进行了讨论。     

用核酸杂交技术检测抗病毒i-RNA制剂中病毒核酸的残留及其在免疫小鼠体内的动态变化

以生物素化dUTP标记CI(?)、株基因组Hind Ⅲ酶切Y片段为探针,用核酸杂交技术检测抗HCMV-iRNA制剂中巨细胞病毒核酸的残留,同时用HCMV免疫小鼠观察病毒核酸在小鼠体内的存留时间。结果,HCMV DNA在小鼠体内的存留时间有明显的个体差异,而与HCMV DNA有同源序列的RNA在免疫后7天被清除。在4批来自羊肝、脾组织的抗HCMV-iRNA 制剂中,有3批查出HCMV核酸。     

正常的与转化的羽扇豆细胞培养物中类异黄酮葡糖甙的形成

在利用基因转化改变羽扇豆属(Lupinus)植物细胞培养物次生代谢途径的过程中,作者比较了正常的(对植物激素有依赖的)细胞悬浮培养物,用根癌土壤杆菌 (Agrobacteum、tumefaciens)(DSM 30150)转化的培养物和用发根土壤杆菌(15834菌株)转化的根培养物。通过植物DNA被EcoRI消化的片段与pTiT37(根癌土壤杆菌的质粒DNA)的HindⅢ消化的片段或与pLJl(发根土壤杆菌的质粒DNA)的BamHI消化的片段进行杂交证     

原发性肝癌转化基因的RFLPs研究(Ⅱ)中国汉族人癌基因N—ras对限制酶Hind Ⅲ的RFLPs

用~(32)p 标记的人癌基因 N-ras 探针 p52C-分别与经限制性核酸内切酶 Hind Ⅲ消化的原发性肝癌患者手术切除的肝癌组织 DNA 以及作为对照的人工流产胎儿绒毛的DNA 进行分子杂交以观察其 RFLPs。结果发现有8.6kb、5.2kb 和6.5kb 三种首报的等位片段,它们在全部标本中出现的频率分别为100%、53.8%和23%。就基因型而言,8.6kb 纯合子占23%,8.6kb/5.2kb 杂合子占54%,8.6kb/6.5kb 杂合子占23%。在首报的三种等位片段中,6.5kb 的片段仅出现于肝癌组织 DNA。     

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.     

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.     

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.     

Scientific principles and rigorous processes should be followed in developing clinical guidelines for therapeutic interventions of integrative medicine

A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care（~＇4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.