OBJECTIVES: This study evaluated cytokines and chemokine in different regions of the rat brain at different time points following Japanese encephalitis virus (JEV) infection. DESIGN: Twelve-day-old Wistar rats were infected by intracerebral inoculation of 3 × 10(6) plaque-forming units of JEV 78668A strain. Expression of cytokines and chemokine was assayed using cytokine bead array in different regions of the brain at 3, 6, 10 and 20 days post-inoculation (dpi). Pathological changes including immunohistochemistry for JEV antigen were observed. RESULTS: The cytokine levels were increased in the acute stage and declined on follow-up. In the acute stage (6 dpi), the levels of TNF-α, IFN-γ, IL-6 and IL-10 were maximum in the cortex, whereas the level of IL-4 was maximum in the striatum. Lower levels of these cytokines were observed in mid-brain and thalamus compared to other regions studied. Maximum expression of JEV antigen and histopathological changes as well as cytokines and chemokine were observed at 6 dpi in all the brain regions studied, but declined thereafter. CONCLUSION: This experimental study revealed maximum expression of cytokines and chemokine at 6 dpi of JEV infection which corresponded with histopathological changes in different brain regions.
OBJECTIVES: This study evaluated cytokines and chemokine in different regions of the rat brain at different time points following Japanese encephalitis virus (JEV) infection. DESIGN: Twelve-day-old Wistar rats were infected by intracerebral inoculation of 3 × 10(6) plaque-forming units of JEV 78668A strain. Expression of cytokines and chemokine was assayed using cytokine bead array in different regions of the brain at 3, 6, 10 and 20 days post-inoculation (dpi). Pathological changes including immunohistochemistry for JEV antigen were observed. RESULTS: The cytokine levels were increased in the acute stage and declined on follow-up. In the acute stage (6 dpi), the levels of TNF-α, IFN-γ, IL-6 and IL-10 were maximum in the cortex, whereas the level of IL-4 was maximum in the striatum. Lower levels of these cytokines were observed in mid-brain and thalamus compared to other regions studied. Maximum expression of JEV antigen and histopathological changes as well as cytokines and chemokine were observed at 6 dpi in all the brain regions studied, but declined thereafter. CONCLUSION: This experimental study revealed maximum expression of cytokines and chemokine at 6 dpi of JEV infection which corresponded with histopathological changes in different brain regions.
Authors: Márcia Carvalho Vilela; Daniel Santos Mansur; Norinne Lacerda-Queiroz; David Henrique Rodrigues; Graciela Kunrath Lima; Rosa Maria Esteves Arantes; Erna Geessien Kroon; Marco Antônio da Silva Campos; Mauro Martins Teixeira; Antônio Lúcio Teixeira Journal: Ann N Y Acad Sci Date: 2009-02 Impact factor: 5.691
Authors: T W Wakefield; R M Strieter; C A Wilke; A M Kadell; S K Wrobleski; M D Burdick; R Schmidt; S L Kunkel; L J Greenfield Journal: Arterioscler Thromb Vasc Biol Date: 1995-02 Impact factor: 8.311
Authors: Raimunda S S Azevedo; Jorge R de Sousa; Marialva T F Araujo; Arnaldo J Martins Filho; Bianca N de Alcantara; Fernanda M C Araujo; Maria G L Queiroz; Ana C R Cruz; Beatriz H Baldez Vasconcelos; Jannifer O Chiang; Lívia C Martins; Livia M N Casseb; Eliana V da Silva; Valéria L Carvalho; Barbara C Baldez Vasconcelos; Sueli G Rodrigues; Consuelo S Oliveira; Juarez A S Quaresma; Pedro F C Vasconcelos Journal: Sci Rep Date: 2018-01-08 Impact factor: 4.379