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[The adrenergic and dopaminergic regulation of kidney acid-excreting function]

N V Krishtal'

    Fiziologicheskii Zhurnal
    |March 1, 1992
    PubMed

    Insights

    Activating alpha 1-adrenoreceptors and dopamine type I receptors stimulates kidney acid excretion. Blocking these receptors impairs this function, highlighting their role in regulating acid-base balance.

    Area of Science:

    • Nephrology
    • Endocrinology
    • Physiology

    Background:

    • The regulation of acid-excretory renal function is crucial for maintaining acid-base homeostasis.
    • Adrenergic and dopaminergic systems play complex roles in physiological processes, including renal function.

    Purpose of the Study:

    • To investigate the specific roles of alpha 1-adrenoreceptors and dopamine type I receptors in regulating acid-excretory renal function.
    • To determine the impact of beta-adrenoreceptors on hydrogen ion excretion.
    • To explore the involvement of these receptors in compensatory mechanisms during metabolic acidosis.

    Main Methods:

    • Experiments were conducted on white rats.
    • The study involved the activation and blockade of specific adreno- and dopamine receptors.
    • Renal function, specifically acid excretion and the angiotensin-aldosterone system, was monitored.

    Main Results:

    • Activation of peripheral alpha 1-adrenoreceptors and dopamine type I receptors stimulated acid-excretory renal function.
    • This activation was associated with the inhibition of the angiotensin-aldosterone system.
    • Blockade of alpha 1-adreno- and dopamine receptors led to a depression of acid-excretory renal activity.
    • Activation or inhibition of beta-adrenoreceptors did not affect hydrogen ion excretion.

    Conclusions:

    • Peripheral alpha 1-adreno- and dopamine type I receptors are key stimulators of acid-excretory renal function.
    • These receptors, along with the angiotensin-aldosterone system, are involved in the body's compensatory responses to metabolic acidosis.
    • Beta-adrenoreceptors do not appear to play a significant role in regulating hydrogen ion excretion.

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