Biomaterial Database

5'-Nucleotidase and adenosine deaminase activities in hypertrophied rat heart. The effect of tachycardia. 1996

D Czarnowski, and B Wójcik, and J Langfort, and J Górski

Department of Physiology, Medical Academy of Białystok.

Activity of 5'-nucleotidase (5NT) and adenosine deaminase (ADA) in the left heart ventricle was examined at normal heart rate and after atrial pacing in six weeks after constriction of the aorta above or below the renal vessels and in sham operated rats. The aorta constriction above the vessels reduced activity of 5NT by 29% and increased activity of ADA by 33%, whereas the constriction below the vessels resulted in elevated activity of both enzymes: 5NT by 16% and ADA by 145% at normal heart rate. The atrial pacing reduced 5NT activity and did not affect ADA activity in control rats and in those with constriction of the aorta below the vessels. The activity of both enzymes increased after constriction of the aorta above the renal vessels. It is concluded that adenosine metabolism in the hypertrophied heart may be changed due to changes in its production and degradation. Renin-angiotensin-aldosterone system seems to be involved in regulation of the activities of adenosine metabolizing enzymes in the hypertrophied heart.

UI	MeSH Term	Description	Entries
D008297	Male		Males
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
D009929	Organ Size	The measurement of an organ in volume, mass, or heaviness.	Organ Volume,Organ Weight,Size, Organ,Weight, Organ
D002304	Cardiac Pacing, Artificial	Regulation of the rate of contraction of the heart muscles by an artificial pacemaker.	Pacing, Cardiac, Artificial,Artificial Cardiac Pacing,Artificial Cardiac Pacings,Cardiac Pacings, Artificial,Pacing, Artificial Cardiac,Pacings, Artificial Cardiac
D000243	Adenosine Deaminase	An enzyme that catalyzes the hydrolysis of ADENOSINE to INOSINE with the elimination of AMMONIA.	Adenosine Aminohydrolase,Aminohydrolase, Adenosine,Deaminase, Adenosine
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D013610	Tachycardia	Abnormally rapid heartbeat, usually with a HEART RATE above 100 beats per minute for adults. Tachycardia accompanied by disturbance in the cardiac depolarization (cardiac arrhythmia) is called tachyarrhythmia.	Tachyarrhythmia,Tachyarrhythmias,Tachycardias
D015720	5'-Nucleotidase	A glycoprotein enzyme present in various organs and in many cells. The enzyme catalyzes the hydrolysis of a 5'-ribonucleotide to a ribonucleoside and orthophosphate in the presence of water. It is cation-dependent and exists in a membrane-bound and soluble form. EC 3.1.3.5.	5'-AMP Nucleotidase,AMP Phosphatase,Adenylate Phosphatase,Antigens, CD73,CD73 Antigens,Cytidylate Phosphatase,Ecto-5'-Nucleotidase,IMP Nucleotidase,IMP Phosphatase,Inosinate Phosphatase,Pyrimidine 5'-Nucleotidase,Thymidine Phosphatase,Uridylate 5'-Nucleotidase,5'-Nucleotidase Phosphoribolase,Antigen, CD73,IMPase,5' AMP Nucleotidase,5' Nucleotidase,5' Nucleotidase Phosphoribolase,CD73 Antigen,Ecto 5' Nucleotidase,Pyrimidine 5' Nucleotidase,Uridylate 5' Nucleotidase
D017208	Rats, Wistar	A strain of albino rat developed at the Wistar Institute that has spread widely at other institutions. This has markedly diluted the original strain.	Wistar Rat,Rat, Wistar,Wistar Rats
D017379	Hypertrophy, Left Ventricular	Enlargement of the LEFT VENTRICLE of the heart. This increase in ventricular mass is attributed to sustained abnormal pressure or volume loads and is a contributor to cardiovascular morbidity and mortality.	Left Ventricular Hypertrophy,Ventricular Hypertrophy, Left,Hypertrophies, Left Ventricular,Left Ventricular Hypertrophies,Ventricular Hypertrophies, Left