Denis M
Unité de Recherche, Hôpital Laval, Chemin Sainte-Foy, Québec, Canada.
Infect Immun. 1991 May;59(5):1857-9. doi: 10.1128/iai.59.5.1857-1859.1991.
Susceptible BALB/c mice were infected with Mycobacterium avium TMC 702. Groups of mice were then infused with 10(4) U (approximately 400 U/h) of murine beta interferon (IFN-beta) via a minipump system, and the progression of the infection was assessed. Mice infused with IFN-beta showed superior resistance to infection, as determined by reduced bacterial growth in the livers and spleens of infected animals, (1-log reduction in bacterial CFU at 2 months postinfection; P less than 0.001). This was corroborated by the fact that resident peritoneal macrophages treated with IFN-beta in vitro (10(2) U/ml) were more bacteriostatic for M. avium TMC 702 than their untreated counterparts. Overall, these findings suggest an important role for IFN-beta in mycobacterial infections.
将易感的BALB/c小鼠感染鸟分枝杆菌TMC 702。然后通过微型泵系统给小鼠组输注10⁴单位(约400单位/小时)的鼠β干扰素(IFN-β),并评估感染的进展。如通过感染动物肝脏和脾脏中细菌生长减少所确定的那样,输注IFN-β的小鼠对感染表现出更强的抵抗力(感染后2个月细菌CFU减少1个对数;P<0.001)。体外经IFN-β(10²单位/毫升)处理的腹腔巨噬细胞对鸟分枝杆菌TMC 702的抑菌作用强于未处理的巨噬细胞,这一事实证实了上述结果。总体而言,这些发现表明IFN-β在分枝杆菌感染中起重要作用。