| 尿素水解对内氏放线菌增殖及耐酸力的影响 |
| |
| 引用本文： | 刘娅玲,胡涛,周学东. 尿素水解对内氏放线菌增殖及耐酸力的影响[J]. 实用口腔医学杂志, 2006, 22(2): 145-147 |
| |
| 作者姓名： | 刘娅玲 胡涛 周学东 |
| |
| 作者单位： | 成都四川大学口腔生物医学工程教育部重点实验室,610041 |
| |
| 摘 要： | 目的通过研究尿素水解对内氏放线菌的生长和耐酸能力的影响,了解尿素水解对内氏放线菌的生理作用。方法比较内氏放线菌利用尿素或其它物质作为氮源的生长浊度;采用耐酸实验研究尿素水解与细菌耐酸能力的关系。结果与其他口腔中常见氮源物质相比,尿素可以促进内氏放线菌生长,获得更高的A值;在临床牙菌斑能够检测到的pH4.0~7.0范围内,尿素水解可以提高内氏放线菌的耐酸性,在pH3.0,尿素水解对细菌没有保护作用。结论尿素水解可以促进内氏放线菌生长,提高酸性环境中细菌的耐酸能力,增强细菌的生存竞争力。
|
| 关 键 词： | 尿素 尿素水解 内氏放线菌 A值 耐酸性 |
| 文章编号： | 1001-3733(2006)-02-0145-03 |
| 收稿时间： | 2005-06-11 |
| 修稿时间： | 2005-09-06 |
The effect of ureolysis on the proliferation and acid-resistance of Actinomyces naeslundii |
| |
| Liu Yaling,Hu Tao,Zhou Xuedong. The effect of ureolysis on the proliferation and acid-resistance of Actinomyces naeslundii[J]. Journal of Practical Stomatology, 2006, 22(2): 145-147 |
| |
| Authors: | Liu Yaling Hu Tao Zhou Xuedong |
| |
| Affiliation: | Key Laboratory of Oral Biochemical Engineering Ministry of Education, Sichuan University, Chengdu 610041, China |
| |
| Abstract: | Objective: To study the effects of ureolysis on the proliferation and acid-resistance of Actinomyces naeslundii.Methods:The growth of Actinomyces naeslundii cultured in different nitrogen sources were measured, and the acid-resistant ability of Actinomyces naeslundii cultured in acid condition with different urea concentration was compared.Results:In contrast with other nitrogen sources,Actinomyces naeslundii could be cultured by urea and higher final A value of the bacteria was obtained;at the range of pH=4.0-7.0, ureolysis could increase the survival of Actinomyces naeslundii from acid killing to some extend, but at pH=3.0, ureolysis could not protect Actinomyces naeslundii anymore.Conclusion:Ureolysis may stimulate the growth of A. naeslundii and increase the acid-resistant ability of Actinomyces naeslundii. |
| |
| Keywords: | Urea Ureolysis Actinomyces naeslundii A value Aciduricity |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
