Myerowitz R L, Norden C W
Infect Immun. 1977 Apr;16(1):218-25. doi: 10.1128/iai.16.1.218-225.1977.
The age-related acquisition of serum anticapsular and bactericidal antibodies to Haemophilus influenzae type b observed in rats was similar to that of humans. The antigenic source for this "natural" immunity was not identified since neither pharyngeal infection with H. influenzae b nor enteric colonization by cross-reacting bacteria was detected. Infant rats surviving H. influenzae b bacteremia failed to respond immunologically to the capsular polysaccharide. However, surviving rats demonstrated no impairment of immune responsiveness to this antigen after subsequent immunization with live bacteria in adulthood. In passive protection experiments, antibodies directed against the type b capsular polysaccharide represented the major protective specificity. However, a small protective effect of antibodies to noncapsular antigens also appeared to have been demonstrated.
在大鼠中观察到的与年龄相关的针对b型流感嗜血杆菌的血清抗荚膜和杀菌抗体的获得情况与人类相似。由于未检测到b型流感嗜血杆菌的咽部感染或交叉反应细菌的肠道定植,这种“天然”免疫的抗原来源尚未确定。在b型流感嗜血杆菌菌血症中存活的幼鼠对荚膜多糖没有免疫反应。然而,存活的大鼠在成年后用活细菌进行后续免疫后,对该抗原的免疫反应性没有受损。在被动保护实验中,针对b型荚膜多糖的抗体代表了主要的保护特异性。然而,针对非荚膜抗原的抗体似乎也显示出了较小的保护作用。