thyroid hormones effectively inhibited partially purified cyclic amp phosphodiesterase from the anterior and posterior lobes of bovine pituitary gland competitively with the substrate , but thyronine , diiodotyrosine , monoiodotyrosine , thyrotropin , thyrotropin releasing hormone , dexamethasone , and luteinizing hormone releasing hormone did not inhibit this enzyme activity .
C0040135
thyroid hormones
C0021996
monoiodotyrosine