作者用自动分析仪测定了进展性牙周炎患者及对照组的颌下腺液、腮腺液、全涎液及牙龈液中游离氨基酸的含量。成人上述各液中氨基酸浓度各不相同。吡喀氨酸δ-氨基戊酸两种氨基酸不出现于牙龈液、颌下腺液及腮腺液中,但全涎液中能测到。因此,全涎液中的此两种氨基酸是细菌的代谢产物或富含吡咯氨酸的唾液蛋白的降解产物。全涎液中氨基酸水平不能代表单项口腔液中氨基酸的水平;细菌代谢可能是唾液中氨基酸含量高的原因之一。 Authors analyzed the contents of free amino acids in the submandibular gland, parotid gland, salivary gland and gingival fluid in patients with progressive periodontitis and controls. The concentration of amino acids in each of the above adults varies. Pyridinecarbamase delta-aminopentanoate two amino acids do not appear in the gingival fluid, submandibular gland fluid and parotid gland fluid, but can be measured in salivary fluid. Thus, the two amino acids in the salivary fluid are bacterial metabolites or pyrionine-rich salivary protein degradation products. Amino acid levels in salivary fluid can not represent the level of amino acids in single oral fluid. Bacterial metabolism may be one of the reasons for the high amino acid content in saliva.