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[The central mechanisms regulating the blood circulation in hyperuricemia]
E F Barynov1, O V Syniachenko, V K Hryn'
1Donetsk Medical University, Ministry of Public Health of Ukraine.
Fiziolohichnyi Zhurnal (Kiev, Ukraine : 1994)
|December 8, 1998
Summary
Altered adenosine metabolism in brain structures of rats with hyperuricemia impacts heart electric stability by affecting central blood flow regulation. This study highlights the link between brain adenosine levels and cardiac function.
Area of Science:
- Neuroscience
- Cardiology
- Biochemistry
Background:
- Central mechanisms play a role in heart electric stability.
- Hyperuricemia can lead to alterations in heart function.
Purpose of the Study:
- To elucidate the role of central mechanisms in heart electric stability alterations.
- To investigate the activity of 5(1)-nucleotidase and adenosine deaminase in specific brain regions.
Main Methods:
- Experiments were conducted on male Wistar rats.
- Enzyme activity (5(1)-nucleotidase, adenosine deaminase) was measured in the sensomotor cortex, hypothalamus, and hippocampus.
- Changes in cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP) content were analyzed.
Main Results:
- Increased adenosine content in neurons of the sensomotor cortex, hypothalamus, and hippocampus correlated with heart function changes.
- DOCA administration to hyperuricemic rats activated 5(1)-nucleotidase and adenosine deaminase, altering cAMP and cGMP levels.
- Alterations in heart electric stability were observed.
Conclusions:
- Brain adenosine metabolism injury is implicated in altered central regulatory mechanisms of systemic blood flow in hyperuricemia.
- Changes in adenosine metabolism within the brain contribute to cardiac electric instability.