title: Pharmacological studies on frozen stored canine saphenous veins and basilar arteries.
abstract: Canine saphenous veins were either placed in Krebs-Henseleit solution and stored for 24 h at +4 degrees C, or immersed in FCS (fetal calf serum) containing 1.8 mol/l DMSO (dimethyl sulfoxide), slowly frozen to -70 degrees C and stored for 4 weeks at -70 degrees C or -190 degrees C. Canine basilar arteries were either stored in Krebs-Henseleit solution for 24 h at +4 degrees C or slowly frozen and stored for 3 months in FCS plus 1.8 mol/l DMSO at -70 degrees C. Subsequent pharmacological investigations revealed a considerable attenuation of the contractile force of frozen-stored vessels but the evidence suggests that there may be a very good preservation of the main biochemical properties, such as monoamine oxidase activity, endogenous prostaglandin synthesis and uptake1 mechanisms in veins stored at -190 degrees C and there is an excellent correlation of the pD2 values for various tryptamine derivatives on canine basilar arteries stored for 3 months at -70 degrees C with those calculated on fresh preparations. It is concluded that freezing isolated blood vessels may be considered an effective means of preserving and storing vascular tissues for pharmacological investigations.
mesh_terms: D000818:Animals; D001488:Basilar Artery / Q000187:drug effects; D004285:Dogs; D005260:Female; D005615:Freezing; D066298:In Vitro Techniques; D008297:Male; D008996:Monoamine Oxidase Inhibitors / Q000494:pharmacology; D009119:Muscle Contraction / Q000187:drug effects; D009131:Muscle, Smooth, Vascular / Q000187:drug effects*; D009638:Norepinephrine / Q000494:pharmacology; D011453:Prostaglandins / Q000096:biosynthesis; D012501:Saphenous Vein / Q000187:drug effects; D012701:Serotonin / Q000494:pharmacology; D014021:Tissue Preservation; D014363:Tryptamines / Q000494:pharmacology
chemical_list: D008996:Monoamine Oxidase Inhibitors; D011453:Prostaglandins; D014363:Tryptamines; D012701:Serotonin; D009638:Norepinephrine