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Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Henan Agricultural Sciences is the property of Editorial Board of Journal of Henan Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

结核性胸膜炎是由结核分枝杆菌抗原引起的T淋巴细胞介导的胸膜炎症,其发病机制复杂,至今仍不明确。成熟的T淋巴细胞是一群高度异质性且存在若干亚群的免疫细胞,研究发现结核性胸膜炎患者体内存在Ⅰ型T辅助细胞/Ⅱ型T辅助细胞免疫应答功能紊乱,Th17/Treg失衡及Th9、Th22、黏膜相关恒定T细胞免疫增强现象,CD4+IL-27+T细胞也可通过干预T淋巴细胞亚型的转换来参与疾病的进程。 [ABSTRACT FROM AUTHOR]

目的探讨朽:檬精油对变异链球菌及白假丝酵母菌生长及牙菌斑生物膜形成的抑制作用。方法采用 MTT药敏试验检测不同浓度柠檬精油作用后变异链球菌和白假丝酵母菌的存活率，并记录最低抑菌浓度。将离体 牙片置入无菌唾液中，形成获得性膜后，放入变异链球菌或白假丝酵母菌悬液中培养。取出牙片，经不同浓度柠檬 精汕处理(变异链球菌作用后的牙片柠檬精油浓度分别为〇. 563、0. 281、0. 141、0. 071 mg/mL,白假丝酵母菌作用后 的牙片柠檬精油浓度分别为1 . 125、0. 563、0. 281、0. 141 mg/mL)，以不含柠檬精油的带菌培养基为阳性对照，记录 洗脱液中的菌落数。结果随着柠檬精油浓度的升高，变异链球菌、白假丝酵母菌的存活率均逐渐降低。柠檬精 油对变异链球菌的最低抑菌浓度为0.563 tng/mL，对白假丝酵母菌的最低抑菌浓度为1. 125 mg/rnL。经0.563、 0. 281、0. 141 mg/mL柠檬精油作用后变异链球菌洗脱液菌落数均低于阳性对照，经1 . 125、0. 563、0. 281 mg/mL柠 檬精油作用后白假丝酵母菌洗脱液菌落数均低于阳性对照均<0. 05)。结论柠檬精油可抑制变异链球菌及 白假丝酵菌的生长;柠檬精油亚抑菌浓度即可抑制变异链球菌及白假丝酵母菌在离体牙表面上形成生物膜。 [ABSTRACT FROM AUTHOR]