Hostility and adrenergic receptor responsiveness: evidence of reduced beta-receptor responsiveness in high hostile men.
Journal Article (Journal Article)
We examined the relation of Cook and Medley Hostility (Ho) scores to alpha- and beta-adrenergic receptor responsiveness to pharmacological agonists in 22 normotensive and 14 hypertensives (aged 18-34) white males, matched for age and body mass. alpha-Adrenergic receptor responsiveness was measured by the phenylephrine dose required to increase mean blood pressure by 25 mmHg (PD25). beta-Adrenergic responsiveness was measured by the isoproterenol dose needed to increase heart rate by 25 bpm (CD25), and to lower systemic vascular resistance by 40% (VD40). Relative to men with low Ho scores (< or = 21), men with high Ho scores (> or = 21) showed significantly reduced vascular beta 2-adrenergic receptor responsiveness (VD40). Moreover, the decreased vascular responsiveness was more pronounced in borderline hypertensive men with high Ho scores. Ho scores were also marginally significant in predicting cardiac beta 1- and beta 2-adrenergic receptor responsiveness, such that men with high Ho scores showed decreased responsiveness as indexed by a larger CD25. Vascular alpha 1-adrenergic responsiveness was not associated with hostility. These observations suggest that hostility, alone or in conjunction with BP status, is associated with reduced cardiovascular beta-adrenergic receptor responsiveness.
Full Text
Duke Authors
Cited Authors
- Suarez, EC; Sherwood, A; Hinderliter, AL
Published Date
- February 1998
Published In
Volume / Issue
- 44 / 2
Start / End Page
- 261 - 267
PubMed ID
- 9532555
International Standard Serial Number (ISSN)
- 0022-3999
Digital Object Identifier (DOI)
- 10.1016/s0022-3999(97)00201-8
Language
- eng
Conference Location
- England