Lima H C, Titus R G
Department of Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins 80523-1671, USA.
Infect Immun. 1996 Dec;64(12):5442-5. doi: 10.1128/iai.64.12.5442-5445.1996.
The saliva of the sand fly vector of leishmaniasis significantly enhanced infection with doses of >10(4) Leishmania braziliensis parasites in BALB/c mice. With a dose of 10(7) L. braziliensis parasites, 60 to 70% of the mice developed lifetime infections. Mice infected with L. braziliensis plus saliva produced two- to threefold more interleukin-4 than did mice infected with L. braziliensis alone. Treatment with a neutralizing anti-interleukin-4 antibody abrogated the effects of the saliva.
利什曼病沙蝇传播媒介的唾液显著增强了 BALB/c 小鼠感染剂量大于 10⁴巴西利什曼原虫寄生虫的能力。给予 10⁷巴西利什曼原虫寄生虫剂量时,60%至 70%的小鼠发生终身感染。感染巴西利什曼原虫加唾液的小鼠产生的白细胞介素-4 比仅感染巴西利什曼原虫的小鼠多两到三倍。用中和性抗白细胞介素-4 抗体治疗可消除唾液的作用。