Resistance to Naegleria fowleri infection passively acquired from immunized splenocyte, serum or milk

Kisaengch'unghak chapchi. The Korean journal of parasitology
M H Ahn, Duk Young Min

Abstract

A pathogenic free-living amoeba, Naegleria fowleri, causes primary amoebic meningoencephalitis to human and experimental animals. This infection is rare, but the mortality is very high. Nowadays, drug treatment or active immunization of human or mice are being tried with partial effectiveness. This study shows passive immunization effect by transfer of immunized spleen cells, serum, or milk from immunized mother in mouse experimental model. Young BALB/c mice were immunized intraperitoneally with 2-3 X 10(6) trophozoites of N. fowleri, and spleen cells and sera were collected for injection to recipient mice. There were seven transfer groups, i.e., immunized mouse serum, spleen cells, serum and spleen cells, normal mouse serum, spleen cells, serum and spleen cells, and control group. Three days later, BALB/c mice were inoculated with 1 x 10(4) trophozoites of N. fowleri intranasally. After infection, decreased mortality and prolonged survival time of mice were noted in immunized groups compared with non-immunized control group. The groups injected with immunized spleen cells or normal serum showed lower mortality than that of controls but showed no changes of serum IgG level. The groups injected with immunized serum or normal spl...Continue Reading

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Citations

Jan 24, 2013·Journal of Korean Medical Science·Won-Jeong KimMoon-Bum Kim

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