TY - JOUR
T1 - Comparative effects of levamisole, Staphylococcus, and Freund's adjuvant on rat immunization with excretory and secretory antigens of Trichinella spiralis muscle larvae
AU - De-La-Rosa-Arana, Jorge Luis
AU - Campos-Rodríguez, Rafael
AU - Rivera-Aguilar, Víctor
AU - Escobar-Gutiérrez, Alejandro
AU - Miliar-García, Ángel
AU - Herrera-González, Norma Elena
AU - Jarillo-Luna, Rosa Adriana
PY - 2012/10
Y1 - 2012/10
N2 - A comparison was made of the effects of levamisole, the bacterial fractions of Staphylococcus, and Freund's adjuvant on the immunization of rats with the excretory and secretory antigens of Trichinella spiralis muscle larvae. Wistar rats were immunized with the antigen and a saline solution, levamisole (LV), Staphylococcus (ST), or Freund's adjuvant (FA). After immunization, rats were infected, and the parasite burden at muscular phase was calculated for each group. Levels of IgG1 and IgG2 antibodies, as well as levels of two cytokines, IL-4 and IFN-γ, were evaluated during the immunization and postinfection periods. Differences were found in the kinetics of antibody production between groups (p<0.01). In all cases, there was reactivity with the main 45-, 50-, and 55-kDa antigens of Trichinella muscle larvae. Immunization with FA and ST enhanced the production of IgG1, but only FA showed a significant increase in the production of IFN-γ (p<0.01), resulting in 86 % protection against the infection. In contrast, only 60-70 % protection was attained in the ST and LV groups (p<0.01). These data support the idea that levamisole and Staphylococcus can be used as adjuvant to enhance the humoral response and, at the same time, demonstrate that IFN-γ could be involved in protection against Trichinella.
AB - A comparison was made of the effects of levamisole, the bacterial fractions of Staphylococcus, and Freund's adjuvant on the immunization of rats with the excretory and secretory antigens of Trichinella spiralis muscle larvae. Wistar rats were immunized with the antigen and a saline solution, levamisole (LV), Staphylococcus (ST), or Freund's adjuvant (FA). After immunization, rats were infected, and the parasite burden at muscular phase was calculated for each group. Levels of IgG1 and IgG2 antibodies, as well as levels of two cytokines, IL-4 and IFN-γ, were evaluated during the immunization and postinfection periods. Differences were found in the kinetics of antibody production between groups (p<0.01). In all cases, there was reactivity with the main 45-, 50-, and 55-kDa antigens of Trichinella muscle larvae. Immunization with FA and ST enhanced the production of IgG1, but only FA showed a significant increase in the production of IFN-γ (p<0.01), resulting in 86 % protection against the infection. In contrast, only 60-70 % protection was attained in the ST and LV groups (p<0.01). These data support the idea that levamisole and Staphylococcus can be used as adjuvant to enhance the humoral response and, at the same time, demonstrate that IFN-γ could be involved in protection against Trichinella.
UR - http://www.scopus.com/inward/record.url?scp=84868205016&partnerID=8YFLogxK
U2 - 10.1007/s00436-012-2998-3
DO - 10.1007/s00436-012-2998-3
M3 - Artículo
C2 - 22752699
SN - 0932-0113
VL - 111
SP - 1599
EP - 1605
JO - Parasitology Research
JF - Parasitology Research
IS - 4
ER -