一株产类胡萝卜素海洋细菌的分离及系统分类学研究

目的 对一株分离自我国东海海域160 m深处产类胡萝卜素的海洋细菌进行形态学、生理生化特性及分子水平的系统分类学研究.方法 通过细菌形态学特征观察、生长条件、生理生化特征测定、全细胞脂肪酸成分分析、16S rRNA序列扩增、测序、比对及构建系统发育进化树,研究了该菌株的系统分类学特性;并通过高效液相色谱对该菌株的类胡萝卜素产出特性进行了分析.结果 该菌株与考克氏菌属(Kocuria sp.)相似度最高,顺-7-棕榈油酸/顺-6-棕榈油酸为该菌株的主要脂肪酸组分.结论 该菌株属于考克氏菌属,暂定名为考克氏菌CAR-red(Kocuria sp.CAR-red)株.     

一株产新型大环内酯抗生素海洋解淀粉芽孢杆菌的分离鉴定

Objective To perform taxonomic studies on a novel macrolactin-producing gram-positive bacterial strain MS1721 isolated from the mud at a depth of 30 m in the East China Sea. Methods Taxonomic studies were conducted based on the phenotypic and BIOLOG analysis, 16S rDNA gene sequencing and blast analysis, and fatty acid components analysis. The antibacterial activity of macrolactin S was determined by evaluation models established in our lab. Results MS1721 strain displayed high similarity with genus Bacillus in similarity values between 97%～99%, in which the nearest neighbor was Bacillus amyloliquefaciens with the similarity value of 99.6%. The predominant fatty acid component was 15:1 iso H/13:0 3OH. Conclusions MS1721 strain belongs to the genus Bacillus, and Bacillus amyloliquefaciens MS1721 was proposed as the name for this strain on the basis of the taxonomic data. The second metabolite-macrolactin s produced by this strain exhibited obvious antibacterial activity.     

一株产新型大环内酯抗生素海洋解淀粉芽孢杆菌的分离鉴定

Objective To perform taxonomic studies on a novel macrolactin-producing gram-positive bacterial strain MS1721 isolated from the mud at a depth of 30 m in the East China Sea. Methods Taxonomic studies were conducted based on the phenotypic and BIOLOG analysis, 16S rDNA gene sequencing and blast analysis, and fatty acid components analysis. The antibacterial activity of macrolactin S was determined by evaluation models established in our lab. Results MS1721 strain displayed high similarity with genus Bacillus in similarity values between 97%～99%, in which the nearest neighbor was Bacillus amyloliquefaciens with the similarity value of 99.6%. The predominant fatty acid component was 15:1 iso H/13:0 3OH. Conclusions MS1721 strain belongs to the genus Bacillus, and Bacillus amyloliquefaciens MS1721 was proposed as the name for this strain on the basis of the taxonomic data. The second metabolite-macrolactin s produced by this strain exhibited obvious antibacterial activity.     

一株产新型大环内酯抗生素海洋解淀粉芽孢杆菌的分离鉴定

Objective To perform taxonomic studies on a novel macrolactin-producing gram-positive bacterial strain MS1721 isolated from the mud at a depth of 30 m in the East China Sea. Methods Taxonomic studies were conducted based on the phenotypic and BIOLOG analysis, 16S rDNA gene sequencing and blast analysis, and fatty acid components analysis. The antibacterial activity of macrolactin S was determined by evaluation models established in our lab. Results MS1721 strain displayed high similarity with genus Bacillus in similarity values between 97%～99%, in which the nearest neighbor was Bacillus amyloliquefaciens with the similarity value of 99.6%. The predominant fatty acid component was 15:1 iso H/13:0 3OH. Conclusions MS1721 strain belongs to the genus Bacillus, and Bacillus amyloliquefaciens MS1721 was proposed as the name for this strain on the basis of the taxonomic data. The second metabolite-macrolactin s produced by this strain exhibited obvious antibacterial activity.     

肺康颗粒对肺脾两虚型慢阻肺大鼠气道的保护作用

目的观察肺康颗粒对肺脾两虚型慢性阻塞性肺病(COPD)大鼠气道重塑及D-木糖排泄率的影响。方法取SD大鼠40只,随机分为正常对照组、COPD模型组、肺康颗粒高、低剂量组(生药量13,3.25g·kg-1),每组10只。采用熏香烟、气道内多次滴入脂多糖及灌服番泻叶的方法,建立大鼠COPD肺脾两虚模型。观察大鼠一般情况;光镜下观察各组大鼠肺组织病理形态学变化;测量肺组织小气道管壁厚度;采用对溴苯胺法测定大鼠尿中D-木糖排泄率。结果与模型组相比,肺康颗粒高、低剂量组大鼠体重明显升高(P<0.05);肺泡和细支气管病理形态明显改善;大鼠肺组织小气道管壁厚度明显变薄(P<0.05);大鼠D-木糖排泄率明显增加(P<0.05)。结论肺康颗粒对肺脾两虚型慢阻肺大鼠气道重塑及D-木糖排泄率有一定的改善作用。     

颅内生殖细胞肿瘤的治疗进展

颅内生殖细胞肿瘤（intracranial germ cell tumors，ICGCTs）是一种少见的颅内胚胎性肿瘤，具有多种组织学类型。大多数类型的生殖细胞肿瘤对放化疗敏感，早期治疗可治愈，5年总生存率（overall survival rate，OSR）可达90%，其他恶性非生殖细胞瘤性生殖细胞肿瘤（non-germinomatous germ cell tumors，NGGCTs）的5年OSR低于70%。近年，随着外科学、影像学、核医学、药学等相关学科的发展，IGGCTs的总体治疗效果有了长足的进展，然而囿于病理基因等方面研究进展缓慢，治疗方案并不统一，缺乏规范化和明确的临床路径和诊治指南。本文就ICGCTs的治疗经验和进展进行综述，以期为临床治疗提供新的思路。      

肺康颗粒对慢阻肺模型大鼠气道重塑及转化生长因子β_1的影响

[目的]观察肺康颗粒对慢性阻塞性肺疾病(COPD)模型大鼠气道重塑及转化生长因子-β1(TGF-β1)的影响.[方法]将清洁级SD大鼠40只随机分为正常对照组、COPD模型组,肺康颗粒高、低剂量组(剂量分别为13、3.25g·kg-1·d-1),每组10只.采用熏香烟、气道内多次滴入脂多糖及灌服番泻叶法复制大鼠COPD肺脾两虚型模型.光镜下观察各组大鼠肺组织病理形态学变化并测量肺组织小气道管壁厚度;采用免疫组织化学法并结合图像分析技术测定大鼠肺组织、肺泡巨噬细胞、支气管黏膜上皮TGF-β1的表达.[结果]与正常对照组比较,模型组大鼠小气道管壁厚度及支气管肺组织TGF-β1的表达均有显著性升高(P<0.05);肺康颗粒高、低剂量组上述指标均显著低于模型组(P<0.05);但肺康颗粒高、低剂量组间支气管肺组织TGF-β1表达无显著性差异(P>0.05).模型组大鼠气道和肺组织出现慢性炎症改变和结构破坏,肺康颗粒高、低剂量组对上述病理变化有明显改善作用.[结论]肺康颗粒治疗COPD的作用与其能在一定程度上改善模型大鼠的气道重塑,降低TGF-β1的表达有关.     

两株产生大环内酯Macrolactin S的海洋细菌的筛选及鉴定

目的:从中国东海分离筛选抗菌活性微生物,确定活性菌株的分类地位。方法:随机挑选30株本室保存的分离自中国东海的细菌,利用抗大肠杆菌模型进行活性筛选。对活性菌株进行形态特征、生化特征、盐需求测试及16S rDNA序列分析,并将所测得的序列在NCBI数据库进行相似性搜索,选取其中具有代表性的序列以邻接法构建系统进化树,将菌株鉴定到属。结果:筛选出活性菌株F81612和F201721,它们的最适生长盐浓度分别为10%和7.5%,菌株形态特征、生化性质与Bacillus sp.相符,菌株F81612和F201721的16S rDNA序列分别与Bacillus subtilis和Bacillus amyloliquefaciens相似程度最大。结论:利用抗大肠杆菌模型筛选到两株产大环内酯Macrolactin S的细菌,均为中等嗜盐的海洋Bacillus sp.。     

一株产新型大环内酯抗生素海洋解淀粉芽孢杆菌的分离鉴定

Objective To perform taxonomic studies on a novel macrolactin-producing gram-positive bacterial strain MS1721 isolated from the mud at a depth of 30 m in the East China Sea. Methods Taxonomic studies were conducted based on the phenotypic and BIOLOG analysis, 16S rDNA gene sequencing and blast analysis, and fatty acid components analysis. The antibacterial activity of macrolactin S was determined by evaluation models established in our lab. Results MS1721 strain displayed high similarity with genus Bacillus in similarity values between 97%～99%, in which the nearest neighbor was Bacillus amyloliquefaciens with the similarity value of 99.6%. The predominant fatty acid component was 15:1 iso H/13:0 3OH. Conclusions MS1721 strain belongs to the genus Bacillus, and Bacillus amyloliquefaciens MS1721 was proposed as the name for this strain on the basis of the taxonomic data. The second metabolite-macrolactin s produced by this strain exhibited obvious antibacterial activity.     

一株产新型大环内酯抗生素海洋解淀粉芽孢杆菌的分离鉴定

Objective To perform taxonomic studies on a novel macrolactin-producing gram-positive bacterial strain MS1721 isolated from the mud at a depth of 30 m in the East China Sea. Methods Taxonomic studies were conducted based on the phenotypic and BIOLOG analysis, 16S rDNA gene sequencing and blast analysis, and fatty acid components analysis. The antibacterial activity of macrolactin S was determined by evaluation models established in our lab. Results MS1721 strain displayed high similarity with genus Bacillus in similarity values between 97%～99%, in which the nearest neighbor was Bacillus amyloliquefaciens with the similarity value of 99.6%. The predominant fatty acid component was 15:1 iso H/13:0 3OH. Conclusions MS1721 strain belongs to the genus Bacillus, and Bacillus amyloliquefaciens MS1721 was proposed as the name for this strain on the basis of the taxonomic data. The second metabolite-macrolactin s produced by this strain exhibited obvious antibacterial activity.