Askenase P W, Hayden B J, Gershon R K
J Exp Med. 1975 Mar 1;141(3):697-702. doi: 10.1084/jem.141.3.697.
Mice immunized with more SRBC than are required to produce optimal delayed-type hypersensitivity reactions, developed good antibody responses and poor delayed foot pad reactions. Cyclophosphamide treatment in low doses (20 mg/kg) before immunization, augmented the delayed-type hypersensitivity without affecting antibody responses. Cyclophosphamide did not augment delayed responses to optimal doses of SRBC (0.01%), but did augment the delayed hypersensitivity response of mice immunized with a suboptimal antigen dose (0.001%); which produced no detectable antibody response with or without cyclophosphamide pretreatment. These results suggest that antibody feedback is not the sole regulator of delayed reactions; the possibility that suppressor T cells may also be involved is discussed.
用比产生最佳迟发型超敏反应所需更多的绵羊红细胞(SRBC)免疫的小鼠,产生了良好的抗体反应,但迟发型足垫反应较差。免疫前用低剂量(20毫克/千克)的环磷酰胺处理,增强了迟发型超敏反应,而不影响抗体反应。环磷酰胺不会增强对最佳剂量SRBC(0.01%)的迟发型反应,但会增强用次优抗原剂量(0.001%)免疫的小鼠的迟发型超敏反应;无论有无环磷酰胺预处理,该剂量均未产生可检测到的抗体反应。这些结果表明,抗体反馈不是迟发型反应的唯一调节因子;文中还讨论了抑制性T细胞也可能参与其中的可能性。