The effect of ureolysis on the proliferation and acid-resistance of Actinomyces naeslundii
- VernacularTitle:尿素水解对内氏放线菌增殖及耐酸力的影响
- Author:
Yaling LIU
;
Tao HU
;
Xuedong ZHOU
- Publication Type:Journal Article
- Keywords:
Urea;
Ureolysis;
Actinomyces naeslundii;
A value;
Aciduricity
- From:
Journal of Practical Stomatology
1996;0(02):-
- CountryChina
- Language:Chinese
-
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.
