Does the relationship between natriuretic hormones and diastolic function differ by race?

Kakota Gaston Kapuku, Harry C. Davis, Patrick Thomas, James Januzzi, Gregory A Harshfield

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Introduction: Heart failure develops earlier and is more prevalent in blacks than whites because of their higher incidence of hypertension and diabetes and likely subsequent diastolic dysfunction. Natriuretic peptides (NP) prevent cardiac malfunction through pressure, natriuresis action. However, whether race affects the relationships of NP action with cardiac function is unknown. Methods: To assess this, 55 (21 whites and 27 males) normotensive adults underwent a 2-hour protocol of 40 minutes rest, video game stressor and recovery. Mitral inflow and myocardial velocities (tissue Doppler) were recorded every 20 minutes. Blood pressure and heart rate were obtained at 10-minute intervals. Blood samples for pro-atrial NP and pro-brain NP (pro-BNP) were collected every 40 minutes. Results: There were differences in the association between (1) the changes from rest to stress for E/A ratio and double product (whites, r = -0.42; blacks, r = 0. 10; P = 0.034 for difference between correlations); (2) stress Em and pro-atrial NP (whites, r = 0.59; blacks, r = -0.25; P = 0.025); (3) rest Em and BNP (whites, r = 0.83; blacks r = -0.17; P = 000); (4) rest Em/Am and pro-BNP (whites, r = 0.70; blacks, r = -0.42;; P = 0.003); (5) rest E/Em and pro-BNP (whites, r = -0.61; blacks, r = 0.31; P = 0.015) and (6) stress E and pro-BNP (whites, r = 0.56; blacks, r = -0.18; P = 0.043). Conclusion: The higher correlations between levels of NP and diastolic function indices both at rest and stress suggest that NP protective action is more pronounced in whites than in blacks.

Original languageEnglish (US)
Pages (from-to)96-99
Number of pages4
JournalAmerican Journal of the Medical Sciences
Volume344
Issue number2
DOIs
StatePublished - Jan 1 2012

Fingerprint

Natriuretic Agents
Natriuretic Peptides
Atrial Natriuretic Factor
Brain
Video Games
Natriuresis
Brain Natriuretic Peptide
Heart Failure
Heart Rate
Blood Pressure
Hypertension
Pressure
Incidence

Keywords

  • Diastolic function
  • Mental stress
  • Natriuretic hormones
  • Race

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Does the relationship between natriuretic hormones and diastolic function differ by race? / Kapuku, Kakota Gaston; Davis, Harry C.; Thomas, Patrick; Januzzi, James; Harshfield, Gregory A.

In: American Journal of the Medical Sciences, Vol. 344, No. 2, 01.01.2012, p. 96-99.

Research output: Contribution to journalArticle

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