Sex, age, and neurovascular control

Michael Joyner, Jacqueline Limberg, Sushant M. Ranadive, Sarah E. Baker

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

In this chapter we focus on how age and sex affect blood pressure in humans. Our key concept, based on work primarily from our lab, is that sex differences in blood pressure regulation are due to differences in the transduction of sympathetic activity into vascular resistance that differ in women and men. In men (at least from low activity, high calorie countries) blood pressure drifts upward with time. In women blood pressure is lower than men until middle age when at menopause it rises more sharply than men. By the 7th decade of life more women are hypertensive than men. The lower blood pressure in women earlier in life can be explained in part because the vasoconstricting actions of sympathetic activity and norepinephrine are offset by concurrent β-adrenergic vasodilation. This dilation is lost around menopause and together with age-related increases in sympathetic activity these phenomenon can explain much of the rise in blood pressure seen in women as they age. By contrast, while sympathetic activity also rises in men as they age, their blood vessels become less sensitive to the vasoconstricting actions of norepinephrine. We discuss these findings and also consider how changes in cardiac output and endothelial function influence them.

Original languageEnglish (US)
Title of host publicationSex Differences in Cardiovascular Physiology and Pathophysiology
PublisherElsevier
Pages355-365
Number of pages11
ISBN (Electronic)9780128131978
ISBN (Print)9780128131985
DOIs
StatePublished - Jan 1 2019

Keywords

  • Autonomic nervous system
  • Blood pressure
  • Cardiac output
  • Endothelial function
  • Vasoconstriction

ASJC Scopus subject areas

  • Medicine(all)

Fingerprint Dive into the research topics of 'Sex, age, and neurovascular control'. Together they form a unique fingerprint.

  • Cite this

    Joyner, M., Limberg, J., Ranadive, S. M., & Baker, S. E. (2019). Sex, age, and neurovascular control. In Sex Differences in Cardiovascular Physiology and Pathophysiology (pp. 355-365). Elsevier. https://doi.org/10.1016/B978-0-12-813197-8.00019-1