title: Transmission and scanning electron microscopic observations of mouse adrenocortical adenoma cells (Y-1) in non-stimulated and stimulated states.
abstract: ACTH sensitive murine adrenocortical adenoma cells (Y-1) were examined by transmission and scanning electron microscopes under non-stimulated and stimulated conditions. They showed the ultrastructural characteristics which were fairly different from those of the original adrenocortical cells of LAF1 mice. The smooth-surfaced endoplasmic reticulum (sER) were poorly developed, and the mitochondrial cristae showed lamellar rather than tubular or tubulo-vesicular type. Administration of ACTH induced rounding-up of the Y-1 cells with slight increase in sER, BUt no mitochondria with vesicular inner structure appeared. The effects of dbcAMP on the morphology of the Y-1 cells were similar to those of ACTH except that the rounding-up occurred more rapidly and uniformly.
mesh_terms: D000236:Adenoma / Q000378:metabolism / Q000648:ultrastructure*; D000302:Adrenal Cortex / Q000648:ultrastructure; D000306:Adrenal Cortex Neoplasms / Q000378:metabolism / Q000648:ultrastructure*; D000310:Adrenal Gland Neoplasms / Q000648:ultrastructure*; D000324:Adrenocorticotropic Hormone / Q000494:pharmacology*; D003994:Bucladesine / Q000494:pharmacology; D002460:Cell Line; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D008855:Microscopy, Electron, Scanning
chemical_list: D003994:Bucladesine; D000324:Adrenocorticotropic Hormone