A sympathetic view of blood pressure control at high altitude: new insights from microneurographic studies
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In: Experimental Physiology, Vol. 106, No. 2, 01.02.2021, p. 377-384.
Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - A sympathetic view of blood pressure control at high altitude: new insights from microneurographic studies
AU - Simpson, Lydia
AU - Steinback, Craig
AU - Stembridge, Mike
AU - Moore, Jonathan
N1 - © 2020 The Authors. Experimental Physiology published by John Wiley & Sons Ltd on behalf of The Physiological Society.
PY - 2021/2/1
Y1 - 2021/2/1
N2 - NEW FINDINGS: What is the topic of the review? Sympathoexcitation and sympathetic control of blood pressure at high altitude. What advances does it highlight? Sustained sympathoexcitation is fundamental to integrative control of blood pressure in humans exposed to chronic hypoxia. The largest gaps in current knowledge are in understanding the complex mechanisms by which central sympathetic outflow is regulated at high altitude.ABSTRACT: High altitude (HA) hypoxia is a potent activator of the sympathetic nervous system, eliciting increases in sympathetic vasomotor activity. Microneurographic evidence of HA sympathoexcitation dates back to the late 20th century, yet only recently have the characteristics and underpinning mechanisms been explored in detail. This review summarises recent findings and highlights the importance of HA sympathoexcitation for the regulation of blood pressure in lowlanders and indigenous highlanders. In addition, this review identifies gaps in our knowledge and corresponding avenues for future study.
AB - NEW FINDINGS: What is the topic of the review? Sympathoexcitation and sympathetic control of blood pressure at high altitude. What advances does it highlight? Sustained sympathoexcitation is fundamental to integrative control of blood pressure in humans exposed to chronic hypoxia. The largest gaps in current knowledge are in understanding the complex mechanisms by which central sympathetic outflow is regulated at high altitude.ABSTRACT: High altitude (HA) hypoxia is a potent activator of the sympathetic nervous system, eliciting increases in sympathetic vasomotor activity. Microneurographic evidence of HA sympathoexcitation dates back to the late 20th century, yet only recently have the characteristics and underpinning mechanisms been explored in detail. This review summarises recent findings and highlights the importance of HA sympathoexcitation for the regulation of blood pressure in lowlanders and indigenous highlanders. In addition, this review identifies gaps in our knowledge and corresponding avenues for future study.
KW - blood pressure control
KW - high altitude
KW - microneurography
KW - muscle sympathetic nerve activity
U2 - 10.1113/EP089194
DO - 10.1113/EP089194
M3 - Article
C2 - 33345334
VL - 106
SP - 377
EP - 384
JO - Experimental Physiology
JF - Experimental Physiology
SN - 0958-0670
IS - 2
ER -