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Marcus NJ, Del Rio R, Schultz HD. Central role of carotid body chemoreceptors in disordered breathing and cardiorenal dysfunction in chronic heart failure. Front Physiol. 2014;5:438doi: 10.3389/fphys.2014.00438.
Marcus, N. J., Del Rio, R., & Schultz, H. D. (2014). Central role of carotid body chemoreceptors in disordered breathing and cardiorenal dysfunction in chronic heart failure. Frontiers in physiology, 5438. https://doi.org/10.3389/fphys.2014.00438
Marcus, Noah J, et al. "Central role of carotid body chemoreceptors in disordered breathing and cardiorenal dysfunction in chronic heart failure." Frontiers in physiology vol. 5 (2014): 438. doi: https://doi.org/10.3389/fphys.2014.00438
Marcus NJ, Del Rio R, Schultz HD. Central role of carotid body chemoreceptors in disordered breathing and cardiorenal dysfunction in chronic heart failure. Front Physiol. 2014 Nov 24;5:438. doi: 10.3389/fphys.2014.00438. eCollection 2014. PMID: 25505417; PMCID: PMC4241833.
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Front Physiol. 2014 Nov 24;5:438. doi: 10.3389/fphys.2014.00438. eCollection 2014.

Central role of carotid body chemoreceptors in disordered breathing and cardiorenal dysfunction in chronic heart failure.

Frontiers in physiology

Noah J Marcus, Rodrigo Del Rio, Harold D Schultz

Affiliations

  1. Department of Cellular and Integrative Physiology, University of Nebraska Medical Center Omaha, NE, USA.
  2. Laboratory of Cardiorespiratory Control, Center of Biomedical Research, Universidad Autónoma de Chile Santiago, Chile.

PMID: 25505417 PMCID: PMC4241833 DOI: 10.3389/fphys.2014.00438

Abstract

Oscillatory breathing (OB) patterns are observed in pre-term infants, patients with cardio-renal impairment, and in otherwise healthy humans exposed to high altitude. Enhanced carotid body (CB) chemoreflex sensitivity is common to all of these populations and is thought to contribute to these abnormal patterns by destabilizing the respiratory control system. OB patterns in chronic heart failure (CHF) patients are associated with greater levels of tonic and chemoreflex-evoked sympathetic nerve activity (SNA), which is associated with greater morbidity and poor prognosis. Enhanced chemoreflex drive may contribute to tonic elevations in SNA by strengthening the relationship between respiratory and sympathetic neural outflow. Elimination of CB afferents in experimental models of CHF has been shown to reduce OB, respiratory-sympathetic coupling, and renal SNA, and to improve autonomic balance in the heart. The CB chemoreceptors may play an important role in progression of CHF by contributing to respiratory instability and OB, which in turn further exacerbates tonic and chemoreflex-evoked increases in SNA to the heart and kidney.

Keywords: Cheyne–Stokes respiration; cardiorenal syndrome; carotid body chemoreceptors; heart failure; sympathetic nervous system

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