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Growth inhibition of oral streptococci in saliva by anionic proteins from two caries-free individuals.

机译:来自两个无龋个体的阴离子蛋白抑制唾液中口腔链球菌的生长。

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Mixed saliva from two caries-free individuals possessed antimicrobial activity toward Streptococcus mutans and S. sanguis. This inhibitory activity was attributed to the presence of a group of four anionic proteins each of which strongly inhibited the growth of the oral streptococci in a saliva protein-based medium but not in a medium containing amino acids as a nitrogen source. These proteins, with isoelectric points of 4.70, 4.90, 4.98, and 5.05, respectively, neither reacted with antisera to immunoglobulin A, G, or M nor appeared to be functionally related to a number of salivary peroxidases, lactoferrin, or lysozyme. On this basis, they may represent a previously unreported group of growth-inhibitory antimicrobial factors occurring in the saliva of some individuals.
机译:来自两个无龋个体的混合唾液对变形链球菌和血链球菌具有抗菌活性。该抑制活性归因于一组四个阴离子蛋白的存在,它们各自在基于唾液蛋白的培养基中而不在含有氨基酸作为氮源的培养基中强烈抑制口腔链球菌的生长。这些蛋白的等电点分别为4.70、4.90、4.98和5.05,它们既未与抗血清反应生成免疫球蛋白A,G或M,也未与多种唾液过氧化物酶,乳铁蛋白或溶菌酶功能相关。在此基础上,它们可能代表了以前未报道过的某些个体唾液中存在的抑制生长的抗菌因子。

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