kaolinite and Brain-Neoplasms

Walker tumor cells and carcinogens were implanted into the brains of rats and L1210, P388 and Ehrlich ascites tumors, in addition to inflammatory agents and hydrocarbons, injected cortically into mice. Behavioral changes were followed in such animals by several psychological criteria, a discriminated lever-press task in rats and an exploratory task, the poke test, in rats and mice. An activity wheel was also employed for further amplification of mouse behavior. No definite changes could be discerned by these tests between rats bearing tumor or carcinogen and the respective controls as was also the case with levels of activity in the mouse. In marked contrast, mice administered tumors or kaolin cortically demonstrated significant reductions in the mean number of pokes, especially with the higher numbers of cells injected and where neurological symptoms were evident. Behavioral changes, if any, were minimal in mice with cortically implanted carcinogens.

Topics: Animals; Behavior, Animal; Brain Diseases; Brain Neoplasms; Carcinogens; Carcinoma 256, Walker; Carcinoma, Ehrlich Tumor; Cerebral Cortex; Haplorhini; Hydrocarbons; Inflammation; Kaolin; Leukemia L1210; Male; Mice; Neoplasm Transplantation; Pectins; Rats; Talc

Topics: Acetone; Adult; Alcohols; Animals; Biological Assay; Brain Neoplasms; Chemical Precipitation; Child; Child, Preschool; Chorionic Gonadotropin; Endocrine System Diseases; Female; Gonadotropins; Humans; Hypogonadism; Hypothalamo-Hypophyseal System; Hypothalamus; Kaolin; Male; Methods; Mice; Middle Aged; Urine

Topics: Animals; Antigen-Antibody Reactions; Astrocytoma; Avian Sarcoma Viruses; Brain Neoplasms; Cell Transformation, Neoplastic; Cerebral Ventricles; Dogs; Ependymoma; Genetics, Microbial; Glioma; Histiocytes; Hydrocephalus; Kaolin; Microscopy, Electron; Neuroblastoma; Sarcoma, Avian; Sarcoma, Experimental; Staining and Labeling