Antigens, Surface; Aorta/enzymology; RNA Processing, Post-Transcriptional; Receptors, Cytoplasmic and Nuclear/biosynthesis; 3' Untranslated Regions; Animals; Aorta/metabolism; Aorta/pathology; Base Sequence; Blotting, Northern; Blotting, Western; Cell Nucleus/metabolism; Cells, Cultured; Dactinomycin/pharmacology; Down-Regulation; ELAV Proteins; ELAV-Like Protein 1; Enzyme Activators/pharmacology; Guanylate Cyclase; Indazoles/pharmacology; Male; Molecular Sequence Data; Muscle, Smooth/cytology; Nucleic Acid Synthesis Inhibitors/pharmacology; Oxadiazoles/pharmacology; Oxazines/pharmacology; Poly A/metabolism; Protein Binding; Protein Structure, Tertiary; RNA/metabolism; RNA, Messenger/metabolism; RNA, Small Interfering; RNA-Binding Proteins/metabolism; Rats; Rats, Wistar; Reverse Transcriptase Polymerase Chain Reaction; Soluble Guanylyl Cyclase; Time Factors; Transcription, Genetic; Transfection