Bimodal oscillations in nephron autoregulation | Zendy

Olga Sosnovtseva | Zendy; А. Н. Павлов | Zendy; Erik Mosekilde | Zendy; NielsHenrik HolsteinRathlou | Zendy

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Bimodal oscillations in nephron autoregulation

Author(s) -

Olga Sosnovtseva,

А. Н. Павлов,

Erik Mosekilde,

NielsHenrik HolsteinRathlou

Publication year - 2002

Publication title -

physical review. e, statistical physics, plasmas, fluids, and related interdisciplinary topics

Language(s) - English

Resource type - Journals

eISSN - 1095-3787

pISSN - 1063-651X

DOI - 10.1103/physreve.66.061909

Subject(s) - tubuloglomerular feedback , nephron , autoregulation , afferent arterioles , entrainment (biomusicology) , synchronization (alternating current) , physics , mechanics , computer science , kidney , channel (broadcasting) , medicine , receptor , rhythm , blood pressure , computer network , acoustics , angiotensin ii

The individual functional unit of the kidney ~the nephron! displays oscillations in its pressure and flow regulation at two different time scales: fast oscillations associated with a myogenic dynamics of the afferent arteriole, and slower oscillations arising from a delay in the tubuloglomerular feedback. We investigate the intra- and internephron entrainment of the two time scales. In addition to full synchronization, both wavelet analyses of experimental data and numerical simulations reveal a partial entrainment in which neighboring nephrons attain a state of chaotic synchronization with respect to their slow dynamics, but the fast dynamics remain desynchronized.

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