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streptococcus mutans and streptococcus sobrinus     
相关语句
  变形链球菌和远缘链球菌
     AIM:To observe the ultrastructure changes of Streptococcus mutans and Streptococcus sobrinus after their fluoride-resistant mutation and to find out the effect of fluoride on the structure of Streptococci.
     目的 :探讨变形链球菌和远缘链球菌耐氟突变后 ,其超微结构变化及氟化物对细菌结构的影响。
短句来源
     MGB Probes Detect Streptococcus Mutans and Streptococcus Sobrinus in Real Time
     小沟聚合物探针实时检测变形链球菌和远缘链球菌
短句来源
     Effect of streptococcus mutans and streptococcus sobrinus on the hardness of enamel surface
     变形链球菌和远缘链球菌对牙釉质表面显微硬度的影响
短句来源
     Base Composition of DNA from Fluoride Resistant Strains of Streptococcus Mutans and Streptococcus Sobrinus
     变形链球菌和远缘链球菌耐氟菌株DNAG+C含量测定
短句来源
     Simultanous Detection of Streptococcus Mutans and Streptococcus Sobrinus by Polymerase Chain Reaction
     PCR同时检测变形链球菌和远缘链球菌
短句来源
更多       
  变形链球菌和远缘链球菌的
     Compared with those of the streptococcus mutans group, dmft, dmfs and somooth-surface caries of the streptococcus mutans and streptococcus sobrinus group were statistically significant( P <0.01).
     患龋儿童组中能同时检出变形链球菌和远缘链球菌的群体,其龋失补牙数、龋失补牙面数及平滑面龋数均与只能检出变形链球菌的群体有显著差异( P< 0.01) 。
短句来源
     Objective: To establish a simple and rapid method to detect Streptococcus mutans and Streptococcus sobrinus simultaneously.
     目的:建立一种快速、简便地同时检测变形链球菌和远缘链球菌的方法。
短句来源
  变形链球菌和远缘
     AIM:To observe the ultrastructure changes of Streptococcus mutans and Streptococcus sobrinus after their fluoride-resistant mutation and to find out the effect of fluoride on the structure of Streptococci.
     目的 :探讨变形链球菌和远缘链球菌耐氟突变后 ,其超微结构变化及氟化物对细菌结构的影响。
短句来源
     Objective: To establish a simple and rapid method to detect Streptococcus mutans and Streptococcus sobrinus simultaneously.
     目的:建立一种快速、简便地同时检测变形链球菌和远缘链球菌的方法。
短句来源
     Compared with those of the streptococcus mutans group, dmft, dmfs and somooth-surface caries of the streptococcus mutans and streptococcus sobrinus group were statistically significant( P <0.01).
     患龋儿童组中能同时检出变形链球菌和远缘链球菌的群体,其龋失补牙数、龋失补牙面数及平滑面龋数均与只能检出变形链球菌的群体有显著差异( P< 0.01) 。
短句来源
     MGB Probes Detect Streptococcus Mutans and Streptococcus Sobrinus in Real Time
     小沟聚合物探针实时检测变形链球菌和远缘链球菌
短句来源
     Effect of streptococcus mutans and streptococcus sobrinus on the hardness of enamel surface
     变形链球菌和远缘链球菌对牙釉质表面显微硬度的影响
短句来源
更多       
  变链菌及远缘链球菌
     METHODS: Decoction, infusion of Chinese nutgall and standard sample of tannin were confected into 5 different concentrations to observe Chinese nutgall's effect on streptococcus mutans and streptococcus sobrinus by Barer-Kirby (B-K) drug susceptibility test method.
     方法 :本实验采用纸片扩散法研究五种浓度五倍子煎剂、五倍子浸剂、鞣酸标准品抑制变链菌及远缘链球菌生长的作用。
短句来源
     RESULTS: Decoction, infusion of Chinese nutgall and standard sample of tannin could inhibit the growth of streptococcus mutans and streptococcus sobrinus when the concentration above 62.5 mL/L,among which Chinese nutgall decoction had the optimal effect.
     结果 :6 2 .5mL/L以上浓度五倍子煎剂、浸剂、鞣酸对变链菌及远缘链球菌生长均有抑制作用 ,其中五倍子浸剂抑菌作用最强。
短句来源

 

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  streptococcus mutans and streptococcus sobrinus
Streptococcus mutans and Streptococcus sobrinus, members of the mutans group of streptococci, are the major etiologic agents of human dental caries.
      
The major cariogenic bacteria are Streptococcus mutans and Streptococcus sobrinus and several of the lactobacillus species.
      


Aim:To determine the relationship of streptococcus sobrinus with rampant caries and smooth-surface caries of primary teeth. Methods: Dental plaque samples of fourty carious children and thirty caries-free children were cultured and studied by using their DNA base composition as a golden standard. Results: The positive rate of streptococcus sobrinus of case group was 20%. The positive rate of streptococcus sobrinus of control group was 3.3% , there was significant difference between them ( P <0.05). Compared...

Aim:To determine the relationship of streptococcus sobrinus with rampant caries and smooth-surface caries of primary teeth. Methods: Dental plaque samples of fourty carious children and thirty caries-free children were cultured and studied by using their DNA base composition as a golden standard. Results: The positive rate of streptococcus sobrinus of case group was 20%. The positive rate of streptococcus sobrinus of control group was 3.3% , there was significant difference between them ( P <0.05). Compared with those of the streptococcus mutans group, dmft, dmfs and somooth-surface caries of the streptococcus mutans and streptococcus sobrinus group were statistically significant( P <0.01). Conclusions: Streptococcus sobrinus cooperated with streptococcus mutans in caries process and it has relation with the rampant caries and smooth-surface caries of primary teeth.

目的:探讨远缘链球菌与乳牙龋病的关系。方法:采有TYCSB培养基作细菌筛选,运用分子遗传学手段即DNA的G+ C mol% 测定作最终鉴定。结果:患龋儿童组与无龋儿童组变形链球菌检出率有显著差异(P<0 .01),远缘链球菌检出率有显著差异(P< 0.05) ;患龋儿童组中能同时检出变形链球菌和远缘链球菌的群体,其龋失补牙数、龋失补牙面数及平滑面龋数均与只能检出变形链球菌的群体有显著差异( P< 0.01) 。结论:变形链球菌是龋病的主要致病菌,远缘链球菌对龋病过程有协同作用,与乳牙平滑面龋的发生、发展有关。

砄bjective:To investigate the consistency of Streptococcus mutans and Streptococcus sobrinus isolates identified by colony morphology,biochemical tests and DNA base content analysis.Methods:46 clinical isolates (30 of S.mutans and 16 of S.sobrinus ) were identified by colony morphology,biochemical tests and determination of DNA base contents with reversed phase high performance liquid chromatography. S.mutans Ingbritt and S.sobrinus 6715...

砄bjective:To investigate the consistency of Streptococcus mutans and Streptococcus sobrinus isolates identified by colony morphology,biochemical tests and DNA base content analysis.Methods:46 clinical isolates (30 of S.mutans and 16 of S.sobrinus ) were identified by colony morphology,biochemical tests and determination of DNA base contents with reversed phase high performance liquid chromatography. S.mutans Ingbritt and S.sobrinus 6715 were used as the controls. Results:The DNA contents (G+C mol%) of S.mutans and S.sobrinus clinical isolates, identified by colony morphdogy and biochemical test, were 37.52 and 45.19 respectively,consistent with the expected 36~38 and 44~46 mol percent of G+C.Conclusion: S.mutans and S.sobrinus isolates,identified by colony morphology and biochemical tests ,were consistent with the DNA G+C content analysis. S.mutans and S.sobrinus can be easily and reliably identified by colony morphology and biochemical tests.

目的 :探讨形态学和生理生化反应与 DNA碱基含量测定鉴定变链菌和远缘链球菌临床分离株的一致性。方法 :采用形态学和生理生化试验鉴定变链菌和远缘链球菌临床分离株 ,采用高效反相液相色谱法测定细菌 DNA G+ C mol%以检验生化鉴定的准确性。结果 :形态及生化鉴定为变链菌和远缘链球菌的临床分离株 ,其 DNA碱基含量分别为 3 7.5 2和 4 5 .19,各自位于变链菌和远缘链球菌 3 6~ 3 8和 4 4~ 4 6的 G+ Cmol%参考范围。结论 :变链菌和远缘链球菌的生化鉴定结果与 DNA G+ C mol%测定结果一致。通过形态及生理生化鉴定基本可以鉴定变链菌和远缘链球菌。

Objective To screen some Chinese herbal medicines for their in hibitory activity on cariogenic bacteria, and investigate their active ingredien ts, and measure their minimum inhibitory concentration (MIC), minimum bactericid al concentration (MBC). Methods Active components were isolat ed from every test ed Chinese herbal medicine by means of aqueous extraction and ethanolic extracti on. Berberine was purified from Coptis chinensis Fra. Disk agar diffusion meth od was employed in screening herbs with inhibiting...

Objective To screen some Chinese herbal medicines for their in hibitory activity on cariogenic bacteria, and investigate their active ingredien ts, and measure their minimum inhibitory concentration (MIC), minimum bactericid al concentration (MBC). Methods Active components were isolat ed from every test ed Chinese herbal medicine by means of aqueous extraction and ethanolic extracti on. Berberine was purified from Coptis chinensis Fra. Disk agar diffusion meth od was employed in screening herbs with inhibiting effect on cariogenic bacteria. MIC and MBC were determined by broth dilution method. Results Against Streptoco ccus mutans Ingbritt, MBCs of Magnolia officinalis ethanolic extract, Berberin e, Coptis chinensis Fra aqueous extract and Coptis chinensis Fra ethanolic extract were 0.488, 0.625, 7.800 and 1.950 g/L respectively. Against Streptococcu s sobr inus 6715, MBCs of Magnolia extract, Coptis chinensis Fra ethanolic extract, R hu s chinensis Mill ethanolic extract and Phellodendron chinen ethanolic extract we re 0.488, 0.625, 1.950, 3.900, 3.900 and 3.900 g/L respectively. Against Actinom yces viscosus ATCC 19246, MBCs of Berberine, Coptis chinensis Fra aqueous extr ac t, Coptis chinensis Fra ethanolic extract, Rheum palmatum L aqueous extract and Rheum palmatum L ethanolic extract were 1.250, 3.900, 3.900, 15.600 and 31. 250 g/L respectively. Conclusions Magnolia officinalis, Coptis chi nensis Fran, Rheum palmatum L aqueous extracts exhibit strong inhibition on cari ogenic bacteria. Magnolia officinalis ethanolic extract has the strongest bacter icidal effects on Streptococcus mutans and Streptococcus sobrinus.

目的 筛选出具有抗致龋菌的中草药 ,并检测其最小抑菌、杀菌浓度。方法 对各种实验用中草药分别采用水、醇两种方法提取有效成分 ,从黄连中提纯盐酸小檗碱 ,通过纸片扩散法筛选出具有抗致龋菌的中草药 ,用液体稀释方法检测最小抑菌及最小杀菌浓度。结果 对变形链球菌Ingbritt株的最小杀菌浓度 ,厚朴、黄连、五倍子、大黄醇提取物、黄连水提取物和小檗碱分别是 0 4 88、1 95 0、7 80 0、3 1 2 5 0、7 80 0及 0 62 6g/L ;对茸毛链球菌 6715株的最小杀菌浓度 ,厚朴、黄连、大黄醇提取物、黄连水提取物和小檗碱分别是 0 4 88、3 90 0、3 1 2 5 0、1 95 0及 0 62 5g/L ;对粘性放线菌ATCC192 4 6株的最小杀菌浓度 ,黄连、大黄醇提取物、黄连水提取物和小檗碱分别是 3 90 0、3 1 2 5 0、3 90 0及 1 2 5 0g/L。结论 厚朴、黄连、大黄醇提取物、盐酸小檗碱、黄连及大黄水提取物对致龋菌有较强的抑菌或杀菌作用 ,厚朴醇提取物的杀菌效果最强。

 
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