喹诺酮类抗生素在蒸发光散射检测器中响应因子的一致性考察

目的考察不同的喹诺酮类抗生素在蒸发光散射检测器(ELSD)中的响应因子是否一致，进而评价利用ELSD迅速测定该类药物含量的可行性。方法用HPLC-ELSD法测定了几种喹诺酮类抗生素（依诺沙星、左氧氟沙星、环丙沙星、洛美沙星和加替沙星）的进样量与响应取双对数的线性方程。色谱条件：YMC-Pack ODS-AM 柱 (150 mm×4.6 mm ID，5 μm)；流动相 0.5%三乙胺水溶液(三氟醋酸调至pH 2.5)-乙腈(48∶12);流速0.6 mL·min^-1。检测器条件：漂移管温度117 ℃，气体流速3.0 L·min^-1。结果5种物质的线性方程间无显著性差异（P>0.05）。结论5种不同的喹诺酮类抗生素在ELSD中的响应因子一致，可尝试用HPLC-ELSD法建立该类药物的一类新药基准品。     

Anti-inflammatory effect of methoxyphenamine compound in rat model of chronic obstructive pulmonary disease

AIM: To evaluate the anti-inflammatory effect of methoxyphenamine compound (MC) on chronic obstructive pulmonary disease (COPD) in rats by measurement of proinflammatory cytokines, total and differential white cell counts (WCC) of bronchroalveolar lavage fluid (BALF). METHODS: Adult rat model of COPD (COPD group) was induced by intratracheal instillation of lipopolysaccharides and exposure to cigarette smoke. Treatment groups received different dosage of MC (3, 9, and 27 mg daily, MC group) or prednisone (0.25 mg daily, P group) respectively. Tumor necrosis factor alpha (TNF-α), interleukin 1beta (IL-113), interleukin-6 (IL-6), transforming growth factor β (TGF-β) of BALF were determined by ELISA. Total and differential WCC were performed after Giemsa staining. RESULTS: The levels of TNF-α, IL-1β, IL-6, TGF-β, total and differential WCC in BALF of MC groups were significantly decreased than that of COPD group (P<0.01), and there was no significant difference among MC groups. There was no significa     

mGM-CSF重组质粒的构建、表达及活性鉴定

目的 构建pc—mGM—CSF重组质粒载体，为mGM—CSF基因治疗肿瘤的研究奠定基础。方法 采用RT—PCR方法从小鼠脾脏中获得目的基因mGM—CSF，克隆于pcDNA3.1／Myc-His(-)(A)质粒上，成为pc-mGM-CSF，用PCR、酶切进行鉴定，然后用脂质体转染小鼠骨髓瘤细胞SP2／0，用G418筛选后通过RT—PCR和SDS—PAGE鉴定，将转染SP2／0上清加入NFS-60细胞，检测蛋白活性。结果 重组质粒中含有mGM—CSF基因，在SP2／0中有表达，且表达产物能分泌到肿瘤细胞外，分泌到细胞外的产物用mGM—CSF依赖株NFS-60细胞检测证明具有生物学活性。结论 成功构建含mGM—CSF真核表达重组质粒，有助于进一步研究其抗肿瘤作用。     

IgA肾病的中医治疗经验

IgA肾病是肾小球系膜区以IgA为主的免疫球蛋白沉积的一种原发性肾小球肾炎，临床以发作性肉眼血尿与持续性镜下血尿为主要表现。其病因多为热在下焦，但热有实热与虚热之分，实热者为热盛伤络，迫血妄行；虚热者为阴虚内热，虚火扰络，络伤血溢。其次为脾气亏虚，气不摄血以及久病入络，气滞血瘀，络脉受损。治疗方法主要有清热凉血、养阴清热、益气健脾、活血化瘀等，但宜辨证与辨病相结合，才能提高疗效。     

胸段食管癌三维适形放疗摆位误差研究

Objective To study the setup errors in three-dimensional conformal radiotherapy (3DCRT) for thoracic esophageal carcinoma using electronic portal imaging device(EPID) and calculate the margins from CTV to PTV. Methods Forty-one patients with thoracic esophageal carcinoma who received 3DCRT were continuously enrolled into this study. The anterior and lateral electronic portal images (EPI) were aquired by EPID once a week. The setup errors were obtained through comparing the difference between EPI and digitally reconstructed radiographs(DRR). Then the setup margins from CTV to PTV were calculat-ed. By using self paired design,22 patients received definitive radiotherapy with different margins. Group A: the margins were 10 mm in all the three axes;Group B: the margins were aquired in this study. The differ-ence were compared by Paired t-test or Wilcoxon signed-rank test. Results The margins from CTV to PTV in x,y and z axes were 8.72 mm, 10.50 mm and 5.62 mm, respectively. Between the group A and group B, the difference of the maximum dose of the spinal cord was significant(4638.7 cGy±1449.6 cGy vs. 4310.2 cGy±1528.7 cGy; t=5.48, P=0.000), and the difference of NTCP for the spinal cord was also significant (4.82%±5.99% vs. 3.64%±4.70%;Z=-2.70,P=0.007). Conclusions For patients with tho-racic esophageal carcinoma who receive 3DCRT in author's department,the margins from CTV to PTV in x, y and z axes were 8.72 mm, 10.50 mm and 5.62 mm, respectively. The spinal cord could be better protected by using these setup margins than using 10 mm in each axis.     

5-羟基-1H-吲哚-3-羧酸乙酯类化合物的合成及其抗流感病毒活性

目的设计合成5-羟基-1H-吲哚-3-羧酸乙酯类化合物,评价其抗流感病毒和抗呼吸道合胞病毒活性.方法经IR、1H-NMR和MS确证目标物结构,并经体外抗病毒试验进行活性筛选.结果与结论合成了9个5-羟基-1H-吲哚-3-羧酸乙酯类化合物,初步活性试验表明,具有一定的抑制流感病毒和呼吸道合胞病毒作用,其中,化合物Ⅷ1、Ⅷ2、Ⅷ5的抗病毒活性与利巴韦林和阿比朵尔相当.     

检测CYP2A6基因多态性的PCR技术的基因型方法

综述检测CYP2A6基因多态性的PCR技术的基因型方法。CYP2A6基因多态性存在于白种人、东方人及非洲裔美国人群中 ,包括CYP2A6 1至CYP2A6 12 ,总共 12个变异等位基因。本文列举了检测CYP2A6基因型的不同的DNA来源、引物和限制性内切酶。已开发PCR技术结合诊断性限制性内切酶分析 (RFLP)如两步PCR和一步PCR RFLP方法检测CYP2A6基因型。此外 ,尚有PCR SSCP +RFLP及直接DNA测序方法。     

新生儿窒息综合评分法的临床研究

探讨新生儿窒息的评分方法，为新生儿窒息的诊断提供可靠依据。方法随机选择100例正常儿和138例窒息儿作为研究对象。在Apgar评分基础上，经反复筛选提出9项参数作为新生儿窒息综合评分的指标。结果新生儿窒息综合评分的指标分别为呼吸（R）、心率（HR）、肤色（SC）、血氧饱和度（SAT）、血氧分压（PaCO2）．二氧化碳分压（PaO2）、脐血pH值（UB－pH）．无创血压（N－BP）及胎儿监护（CTG）等。初评方案Ⅰ由R、P、SC、SAT、CTG和UB－pH组成，初评方案Ⅱ由R、P、SC、CTG、PaO2和PaCO2组成．复评方案由pH、PaO2、PaCO2、SaO2、N－BP和Silverman呼吸评分组成。Apgar评分正常的新生儿采用初评方案Ⅰ、Ⅱ评价，分别有5％、8％的新生儿存在轻度窒息。Apgar评分属于窒息者，采用初评方案Ⅰ、Ⅱ评分均正常者4例，初评方案Ⅰ为正常者6例，初评方案Ⅱ为正常者8例。结论采用Apgar评分诊断新生儿窒息存在假阳性和假阴性。采用初评方案Ⅰ诊断新生儿窒息具有简便、快速、准确、重复性好等优点。     

眩晕康治疗椎-基底动脉缺血性眩晕90例临床研究

目的:观察眩晕康治疗椎-基底动脉缺血性眩晕的临床疗效。方法:选择椎-基底动脉缺血性眩晕患者120例,随机分为2组。治疗组90例,以眩晕康治疗;对照组30例,以尼莫通(现改名为尼膜同)治疗。观察临床疗效、治疗前后症状积分、椎-基底动脉血平均流速、血液流变学指标及血浆内皮素(ET)、一氧化氮(NO)、血浆脂质过氧化物(LPO)、超氧化物歧化酶(SOD)等指标变化情况。结果:总有效率治疗组为96.7％,对照组为83.3％,2组比较,差异有显著性意义(P<0.05),提示治疗组疗效优于对照组。2组治疗前后症状总积分比较,治疗组优于对照组(P<0.05)。而且治疗组椎-基底动脉血平均流速、血液流变学指标、ET、NO、LPO、SOD等指标的改善均优于对照组(P<0.05)。结论:眩晕康是治疗椎-基底动脉缺血性眩晕的有效中成药。     

早发性帕金森病Parkin基因突变研究

目的：研究早发性帕金森病患者Parkin基因的突变情况，并分析Parkin基因突变对其功能的影响。方法：以40例早发性帕金森病患者和100例正常人为研究对象，提取基因组DNA，扩增Parkin基因的7对外显子，并用单链构象多态性（SSCP）的方法分析Parkin基因的缺失突变和点突变情况。结果：2例患者外显子4缺失．1例患者外显子2缺失，1例患者外显子7发乍G951C突变。正常人中未发现外显子缺失和点突变。结论：Parkin基因突变是早发性帕金森病患者发病原因之一。