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.     

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.     

甲状腺功能正常的2型糖尿病甲状腺激素与嘌呤代谢和体重的相关性

目的 探讨甲状腺功能正常的2型糖尿病患者甲状腺激素与尿酸(UA)和体重指数(BMI)的关系.方法 选取确诊的甲功正常的2型糖尿病患者313例,入院后测BMI、空腹血糖(FBG)、血脂、甲状腺激素和UA等代谢指标,分析甲状腺激素和BMI及UA的相关性.结果 (1)根据性别分为2组,男性FT3、FT4、UA显著高于女性(P<0.01),女性TSH、SBP、HDL-C显著高于男性(P<0.01);(2)按BMI水平分为3组,超重及肥胖组促甲状腺激素(TSH)、三碘甲腺原氨酸(TT3)、游离三碘甲状腺原氨酸(FT3)、UA、FBG均高于体重正常组(P<0.05);(3)按TSH水平分为2组,TSH>2.5μIU/L组血清尿酸、TT3、FT3、空腹胰岛素高于TSH<2.5μIU/L组(P<0.05);(4)按UA水平分为2组,男性高尿酸组TSH及FT3高于正常尿酸组,P<0.05;女性高尿酸组TSH高于正常尿酸组(P<0.05).结论 甲状腺激素对评估2型糖尿病患者的体重和尿酸有重要的临床意义.     

宫术宁联合戊酸雌二醇在绝经妇女取器的应用

目的观察宫术宁胶棒联合戊酸雌二醇在绝经后取器术中的应用价值。方法选择来我院要求取器的绝经妇女188例,随机分成两组,观察两组患者的取环成功率、宫颈扩张情况及对受术者的镇痛效果。结果观察组取器成功率、宫颈软化、扩张、镇痛及手术时间与对照组差别有统计学意义(P<0.05)。结论宫术宁胶棒联合戊酸雌二醇用于绝经后妇女取器,操作简便、宫颈扩张好、痛苦轻、安全有效,值得临床广泛推广。     

芬吗通的不同用药方案在冻融胚胎移植中的应用

目的探讨在冻融胚胎移植周期中,四种不同的内膜准备方案的临床效果。方法回顾性分析2013年1~12月于大连市妇女儿童医疗中心生殖中心行冷冻胚胎移植的304个周期,根据内膜准备方案,分为自然周期组、补佳乐组、芬吗通口服组及芬吗通联合组(芬吗通口服联合阴道用药),比较四种方案雌激素水平、子宫内膜厚度及妊娠结局的差异。结果芬吗通联合组患者基础内膜为(6.18±2.23)mm,较其他3组薄,差异有统计学意义(P0.05),但用药后可达到与其他3组相当的内膜厚度(P0.05);联合组雌二醇值(确定开始使用孕激素日)(5 465.51±901.9)pmol/L、移植后第4天(5971.90±907.52)pmol/L)、临床妊娠率(47.37%),均高于其他各组,差异有统计学意义(P0.05);而自然周期组的周期取消率为10.53%,高于其他各组(P0.05)。结论在冷冻胚胎移植中,月经不规律、排卵障碍、内膜薄者,使用人工周期可获得较好的临床结局;对于一部分单纯口服补佳乐或芬吗通仍不能获得满意的内膜厚度的患者,使用芬吗通口服联合阴道用药可显著增加内膜厚度,获得有效的治疗。     

维生素D3在2型糖尿病人群中的性别差异

目的 了解2型糖尿病患者血清维生素D3水平在不同性别组中的差异.方法 按WHO1999年关于糖尿病的诊断标准诊断糖尿病.检查生化指标、甲功和人体参数等.按不同性别分组,比较不同性别组间维生素D3水平与各指标之间的相关性.结果 维生素D3与性别、糖尿病病程、T3、FT3、吸烟史呈正相关(P＜0.05),男性2型糖尿病组中维生素D3与FT3有相关性(P＜0.05),女性2型糖尿病组中维生素D3与T3有相关性(P＜0.01).结论 维生素D3水平2型糖尿病代谢指标中存在性别差异.