Biomaterial Database

Influence of nonsteroidal anti-inflammatory agents on myocardial ischemia in the cat. 1976

M L Ogletree, and A M Lefer

Indomethacin, meclofenamic acid and acetylsalicylic acid are prostaglandin synthetase-inhibiting, nonsteroidal anti-inflammatory drugs. Their effects on hemodynamic and enzymatic responses to coronary artery occlusion were evaluated in the cat. The direct effects of these drugs on isolated tissue preparations (i.e., cat papillary muscle, aortic strip and liver lysosomes) were also studied. None of the drugs tested exhibited any significant hemodynamic or biochemical effects which would indicate protection against damage due to myocardial ischemia during the 5-hour experimental period. Furthermore, only indomethacin produced significant effects on the isolated tissues studied. Indomethacin increased the tension of aortic strips confirming a pressor effect seen in the intact animal and exerted a modest stabilization of isolated liver lysosomes. All three anti-inflammatory drugs inhibited prostaglandin F2alpha, release in heart homogenates by 82 to 87%. It is concluded that nonsteroidal anti-inflammatory drugs do not significantly influence the early course of myocardial ischemia in the cat, in contrast to the previously reported preservation of myocardial integrity afforded by dexamethasone and methylprednisolone.

UI	MeSH Term	Description	Entries
D007213	Indomethacin	A non-steroidal anti-inflammatory agent (NSAID) that inhibits CYCLOOXYGENASE, which is necessary for the formation of PROSTAGLANDINS and other AUTACOIDS. It also inhibits the motility of POLYMORPHONUCLEAR LEUKOCYTES.	Amuno,Indocid,Indocin,Indomet 140,Indometacin,Indomethacin Hydrochloride,Metindol,Osmosin
D008099	Liver	A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances.	Livers
D008247	Lysosomes	A class of morphologically heterogeneous cytoplasmic particles in animal and plant tissues characterized by their content of hydrolytic enzymes and the structure-linked latency of these enzymes. The intracellular functions of lysosomes depend on their lytic potential. The single unit membrane of the lysosome acts as a barrier between the enzymes enclosed in the lysosome and the external substrate. The activity of the enzymes contained in lysosomes is limited or nil unless the vesicle in which they are enclosed is ruptured or undergoes MEMBRANE FUSION. (From Rieger et al., Glossary of Genetics: Classical and Molecular, 5th ed).	Autolysosome,Autolysosomes,Lysosome
D008297	Male		Males
D008469	Meclofenamic Acid	A non-steroidal anti-inflammatory agent with antipyretic and antigranulation activities. It also inhibits prostaglandin biosynthesis.	Benzoic acid, 2-((2,6-dichloro-3-methylphenyl)amino)-, monosodium salt, monohydrate,Meclofenamate,Meclofenamate Sodium,Meclofenamate Sodium Anhydrous,Meclofenamate Sodium Monohydrate,Meclomen,Sodium Meclofenamate,Meclofenamate, Sodium
D009129	Muscle Tonus	The state of activity or tension of a muscle beyond that related to its physical properties, that is, its active resistance to stretch. In skeletal muscle, tonus is dependent upon efferent innervation. (Stedman, 25th ed)	Muscle Tension,Muscle Tightness,Muscular Tension,Tension, Muscle,Tension, Muscular,Tightness, Muscle,Tonus, Muscle
D009206	Myocardium	The muscle tissue of the HEART. It is composed of striated, involuntary muscle cells (MYOCYTES, CARDIAC) connected to form the contractile pump to generate blood flow.	Muscle, Cardiac,Muscle, Heart,Cardiac Muscle,Myocardia,Cardiac Muscles,Heart Muscle,Heart Muscles,Muscles, Cardiac,Muscles, Heart
D010210	Papillary Muscles	Conical muscular projections from the walls of the cardiac ventricles, attached to the cusps of the atrioventricular valves by the chordae tendineae.	Muscle, Papillary,Muscles, Papillary,Papillary Muscle
D011453	Prostaglandins	A group of compounds derived from unsaturated 20-carbon fatty acids, primarily arachidonic acid, via the cyclooxygenase pathway. They are extremely potent mediators of a diverse group of physiological processes.	Prostaglandin,Prostanoid,Prostanoids
D011506	Proteins	Linear POLYPEPTIDES that are synthesized on RIBOSOMES and may be further modified, crosslinked, cleaved, or assembled into complex proteins with several subunits. The specific sequence of AMINO ACIDS determines the shape the polypeptide will take, during PROTEIN FOLDING, and the function of the protein.	Gene Products, Protein,Gene Proteins,Protein,Protein Gene Products,Proteins, Gene