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Related Experiment Videos

Renin inactivation during in vitro experiments.

K W Cho, R L Malvin

    The American Journal of Physiology
    |May 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    Renin released into incubation fluid rapidly disappears when bubbled with gas. This inactivation of renin occurs at the air-water interface, not due to kidney slices.

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    Area of Science:

    • Biochemistry
    • Physiology
    • Renal Science

    Background:

    • Renin is a crucial enzyme in the renin-angiotensin-aldosterone system.
    • Understanding factors affecting renin release and stability is vital for physiological studies.

    Purpose of the Study:

    • To investigate the factors influencing renin stability in vitro.
    • To determine the mechanism of renin disappearance from incubation media.

    Main Methods:

    • In vitro incubation of kidney slices from rats, dogs, and pigs.
    • Comparison of renin activity in media with gas bubbling versus layered gas phases.
    • Measurement of renin half-life under different gas conditions.

    Main Results:

    • Renin rapidly disappeared from incubation media when gas was bubbled through.

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  • Gas bubbling with oxygen-CO2 or nitrogen-CO2 similarly reduced renin half-life to approximately 15 minutes.
  • Renin remained stable in non-bubbled media after kidney slice removal.

    • Conclusions:

    • Renin is inactivated at the air-water interface.
    • The presence of kidney slices is not required for renin inactivation in bubbled media.