[Changes in the energy state of tissues in spontaneously hypertensive rats].
The contents of adenine nucleotides (ATP, ADP, AMP), phosphocreatine (PCr) and creatine (Cr) in the heart, skeletal muscle, liver and spleen in spontaneously hypertensive (SHR) and normotensive (WKY) rats. The ATP/ADP ratio in cardiac tissue was lower in SHR compared with WKY, while myocardial contents of adenine nucleotides, PCr and Cr did not differ significantly between the groups. A lower ATP/ADP ratio in the skeletal muscle SHR of was accompanied by a reduction of PCr content comparing with these indices in WKY rats. The liver and spleen of SHR exhibited lower ATP contents and higher ADP and AMP levels compared with those ones in WKY rats, despite of the close values of adenine nucleotide pools (sigma AN = ATP + ADP + AMP). This redistribution of tissue adenine nucleotides was corresponded to lower energy charges (EC = (ATP + 0.5 ADP)/sigma AN) and ATP/ADP ratios in SHR group. The reduction of the energy state of tissues in SHR rats increased in the following rank: heart > skeletal muscle > liver > spleen, thus, reflecting progressive decrease of intensity of oxidative metabolism. The results suggest changes in the balance of rates of ATP formation and hydrolysis occur at the system level in primary hypertension. Probably, consequences of such rearrangement in energy metabolism are functional disturbances of plasma membrane and sacroplasmic reticulum well-documented in a number of experimental and clinical studies.
Studneva
I M
IM
Cardiological Research-Industrial Complex, Moscow, Russia.
Postnov
A Iu
AIu
Pisarenko
O I
OI
D000227:Adenine Nucleotides / Q000378:metabolism; D000818:Animals; D003401:Creatine / Q000378:metabolism; D004734:Energy Metabolism; D006973:Hypertension / Q000378:metabolism*; D008099:Liver / Q000378:metabolism; D008297:Male; D018482:Muscle, Skeletal / Q000378:metabolism; D009206:Myocardium / Q000378:metabolism; D010725:Phosphocreatine / Q000378:metabolism; D051381:Rats; D011918:Rats, Inbred SHR; D011921:Rats, Inbred WKY; D013154:Spleen / Q000378:metabolism
D000227:Adenine Nucleotides; D010725:Phosphocreatine; D003401:Creatine