title: Methimazole increases thyroid-specific mRNA concentration in human thyroid cells and FRTL-5 cells.
abstract: Methimazole (1-methyl-2-mercaptoimidazole; MMI) increases thyroglobulin mRNA and thyroid peroxidase mRNA concentration in human thyroid cells and in FRTL-5 cells. MMI (1-10,000 microM) gives a dose-dependent increase of thyroglobulin concentration in the medium of human thyroid cells and FRTL-5 cells. The stimulation by MMI has no effect on the TSH-induced cAMP production and occurs in the presence or absence of thyrotropin (TSH). TSH increases the thyroglobulin and thyroid peroxidase mRNA synthesis in human thyroid cells and FRTL-5 cells. The accumulation of thyroglobulin in the medium has an optimum at 100 microU TSH/ml in FRTL-5 cells. This optimum can also be found in most human thyroid cell cultures.
authors.affiliation: Department of Experimental Pediatric Endocrinology, Academic Medical Centre, Amsterdam, The Netherlands.
authors.forename: L M
authors.initials: LM
authors.lastname: Leer
authors.forename: M
authors.initials: M
authors.lastname: Cammenga
authors.forename: E R
authors.initials: ER
authors.lastname: van der Vorm
authors.forename: J J
authors.initials: JJ
authors.lastname: de Vijlder
mesh_terms: D015152:Blotting, Northern; D002460:Cell Line; D002478:Cells, Cultured; D000242:Cyclic AMP / Q000378:metabolism; D006801:Humans; D007453:Iodide Peroxidase / Q000235:genetics* / Q000378:metabolism; D008713:Methimazole / Q000494:pharmacology*; D009693:Nucleic Acid Hybridization; D012333:RNA, Messenger / Q000096:biosynthesis / Q000378:metabolism*; D013954:Thyroglobulin / Q000235:genetics* / Q000378:metabolism; D013961:Thyroid Gland / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism; D013972:Thyrotropin / Q000378:metabolism / Q000494:pharmacology
chemical_list: D012333:RNA, Messenger; D008713:Methimazole; D013972:Thyrotropin; D013954:Thyroglobulin; D000242:Cyclic AMP; D007453:Iodide Peroxidase