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Selective Bacterial Adherence to Oral Epithelial Surfaces and Its Role as an Ecological Determinant

机译：细菌对口腔上皮表面的选择性粘附及其作为生态决定因素的作用

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The possible relationship between the ability of Streptococcus species to adhere to oral epithelial cells and their natural distribution on epithelial surfaces within the mouth was studied. Strains of S. salivarius and S. sanguis, which are present in significant proportions on oral epithelial surfaces, were found to possess a definite capacity to adhere to epithelial cells obtained from cheek scrapings of humans, hamsters, and germ-free rats. In contrast, strains of S. mutans, which are found in only minor proportions, if at all, on oral epithelial surfaces exhibited feeble or no adherence to oral epithelial cells. S. salivarius cells attached well to human cheek cells over the range of pH 5 to 8. Its adherence was not found to be markedly influenced by saliva or by growth in sucrose broth. Several other types of bacteria were examined which also exhibited widely different abilities to attach to human cheek cells. Mixtures of streptomycin-labeled strains were introduced into the mouths of volunteers for study of the adherence of Streptococcus species to oral epithelial surfaces in vivo. Labeled S. salivarius and S. sanguis were recovered in high proportions from cheek and tongue surfaces, whereas the proportions of labeled S. mutans recovered from these surfaces were low in comparison to the original mixture. These data indicate that a correlation exists between the relative adherence of various Streptococcus species and their proportional distribution found naturally on oral epithelial surfaces. The ability of bacteria to adhere to surfaces is proposed as a critical ecological determinant affecting their colonization in environments with open surfaces exposed to bathing fluids.
机译：研究了链球菌物种粘附口腔上皮细胞的能力与其在口腔内上皮表面上自然分布之间的可能关系。 S株。唾液和 S。大量存在于口腔上皮表面的sanguis 被发现具有一定的粘附从人，仓鼠和无菌大鼠脸颊刮取的上皮细胞的能力。相反， S菌株。在口腔上皮表面上发现的变形变异体（即使很小），对口腔上皮细胞的附着力微弱甚至没有。 S。唾液细胞在 p H 5至8的范围内与人颊细胞紧密结合。未发现唾液或蔗糖肉汤的生长对唾液粘附具有显着影响。检查了几种其他类型的细菌，它们也表现出与人脸细胞附着的能力差异很大。将链霉素标记菌株的混合物引入志愿者的嘴中，以研究链球菌物种在体内对口腔上皮表面的粘附性。标记为 S。唾液和 S。从脸颊和舌头表面高比例回收了血红蛋白，而标记为 S的血红蛋白的比例却很高。与原始混合物相比，从这些表面回收的变形菌含量较低。这些数据表明，各种链球菌种类的相对粘附性与它们在口腔上皮表面上自然发现的比例分布之间存在相关性。细菌粘附于表面的能力被认为是影响其在暴露于沐浴液的开放表面环境中定殖的重要生态决定因素。

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