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Related Experiment Videos

Ureteral pacemaker potentials recorded with the sucrose gap technique.

V C Zawalinski, C E Constantinou, G Burnstock

    Experientia
    |August 15, 1975
    PubMed
    Summary

    Ureteral contractions are regulated by a gating mechanism in the renal pelvis. This mechanism controls the rate of pacemaker potentials, influencing ureteral function.

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    Area of Science:

    • Physiology
    • Urology

    Background:

    • Ureteral contractions are essential for urine transport.
    • The renal pelvis generates pacemaker potentials that initiate these contractions.

    Purpose of the Study:

    • To investigate the relationship between renal pelvis pacemaker potentials and ureteral contraction intervals.
    • To identify regulatory mechanisms controlling ureteral peristalsis.

    Main Methods:

    • In vitro recording of pacemaker potentials from the renal pelvis using a sucrose gap technique.
    • Analysis of ureteral contraction intervals in relation to pacemaker potential periods.

    Main Results:

    • Ureteral contraction intervals were found to be integral multiples of the pacemaker potential period.
    • This suggests a direct regulatory link between pacemaker activity and contraction frequency.

    Conclusions:

    • A gating mechanism within the pyeloureter likely regulates the initiation rate of ureteral contractions.
    • This finding offers insights into the physiological control of urine transport.

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