title: A Taenia crassiceps factor induces apoptosis of spleen CD4+T cells and TFG-β and Foxp3 gene expression in mice.
abstract: This study was undertaken to determine whether a parasite substance produces structural pathology in the mouse spleen. A low-molecular-weight Taenia crassiceps metacestode factor (MF) isolated from the peritoneal fluid of female mice infected with T. crassiceps metacestodes induced pathological and immunological changes in mouse spleen cells in vivo. Electron microscopy and confocal microscopy revealed severe changes in the spleen histoarchitecture of T. crassiceps-infected and MF-treated mice. Apoptotic degenerated spleen cells were observed in the white and red pulps and were more conspicuous in the white pulp of the spleen from the T. crassiceps-infected mice than in that of the MF-treated mice. Flow cytometry analysis revealed that the numbers of spleen CD4+T cells were significantly lower in both experimental groups than in control mice. The ex vivo expression of transforming growth factor (TGF)-β and factor Foxp3 were significantly higher in splenocytes of the experimental mice than the basal expression observed in the control cells. These findings may have potential applications for a better understanding of the host-parasite relationship in human neurocysticercosis.
authors: Departamento de Bioquímica y Biología Estructural,Instituto de Fisiología Celular, Universidad Nacional Autónoma de México,México, D.F.
authors: N
authors: N
authors: Zepeda
authors: Departamento de Microbiología y Parasitología,Facultad de Medicina, Universidad Nacional Autónoma de México,México, D.F.
authors: R
authors: R
authors: Tirado
authors: Departamento de Bioquímica y Biología Estructural,Instituto de Fisiología Celular, Universidad Nacional Autónoma de México,México, D.F.
authors: N
authors: N
authors: Copitin
authors: Departamento de Microbiología y Parasitología,Facultad de Medicina, Universidad Nacional Autónoma de México,México, D.F.
authors: S
authors: S
authors: Solano
authors: Departamento de Microbiología y Parasitología,Facultad de Medicina, Universidad Nacional Autónoma de México,México, D.F.
authors: A M
authors: AM
authors: Fernández
authors: Departamento de Microbiología y Parasitología,Facultad de Medicina, Universidad Nacional Autónoma de México,México, D.F.
authors: P
authors: P
authors: Tato
authors: Departamento de Bioquímica y Biología Estructural,Instituto de Fisiología Celular, Universidad Nacional Autónoma de México,México, D.F.
authors: J L
authors: JL
authors: Molinari
mesh_terms: D000818:Animals; D017209:Apoptosis / Q000502:physiology*; D015496:CD4-Positive T-Lymphocytes / Q000502:physiology*; D002478:Cells, Cultured; D005260:Female; D051858:Forkhead Transcription Factors / Q000235:genetics / Q000378:metabolism*; D005786:Gene Expression Regulation; D051379:Mice; D008807:Mice, Inbred BALB C; D013154:Spleen / Q000166:cytology; D013621:Taenia / Q000378:metabolism*; D013622:Taeniasis / Q000378:metabolism / Q000469:parasitology* / Q000473:pathology; D016212:Transforming Growth Factor beta / Q000235:genetics / Q000378:metabolism*
chemical_list: D051858:Forkhead Transcription Factors; C498833:Foxp3 protein, mouse; D016212:Transforming Growth Factor beta