Apoptosis Regulatory Proteins/genetics; Astrocytes/parasitology; Protozoan Proteins/genetics; Toxoplasma/physiology; Animals; Animals, Newborn; Antineoplastic Agents/pharmacology; Apoptosis; Apoptosis Regulatory Proteins/metabolism; Astrocytes/cytology; Astrocytes/drug effects; Brain/cytology; Caspases/metabolism; Cisplatin/pharmacology; Female; Gene Expression Regulation; Genes, bcl-2/genetics; Glial Fibrillary Acidic Protein; Inhibitor of Apoptosis Proteins/genetics; Inhibitor of Apoptosis Proteins/metabolism; Male; Mice; Mice, Inbred BALB C; Nerve Tissue Proteins/genetics; Nerve Tissue Proteins/metabolism; Poly (ADP-Ribose) Polymerase-1; Poly(ADP-ribose) Polymerases/genetics; Poly(ADP-ribose) Polymerases/metabolism; Proto-Oncogene Proteins c-bcl-2/genetics; Proto-Oncogene Proteins c-bcl-2/metabolism; Protozoan Proteins/metabolism; Repressor Proteins/genetics; Repressor Proteins/metabolism; Specific Pathogen-Free Organisms; Survivin; Toxoplasma/growth & development; Tumor Suppressor Proteins/genetics; Tumor Suppressor Proteins/metabolism