Skip to main content
Journal cover image

Hypertrophic remodeling: gender differences in the early response to left ventricular pressure overload.

Publication ,  Journal Article
Douglas, PS; Katz, SE; Weinberg, EO; Chen, MH; Bishop, SP; Lorell, BH
Published in: J Am Coll Cardiol
October 1998

OBJECTIVES: To identify gender differences in left ventricular remodeling, hypertrophy, and function in response to pressure overload due to ascending aortic banding in rats. BACKGROUND: Gender may influence the adaptation to pressure overload, as women with aortic stenosis have greater degrees of left ventricular hypertrophy and better left ventricular function than men. METHODS: Fifty-two weanling rats underwent ascending aortic banding (16 males, 18 females), or sham surgery (9 males, 9 females). At 6 and 20 weeks, rats underwent transthoracic echo Doppler studies, and closed-chest left ventricular pressures with direct left ventricular puncture. Perfusion-fixed tissues from eight rats were examined morphometrically for myocyte cross-sectional area and percent collagen volume. RESULTS: At 6 weeks after aortic banding, left ventricular remodeling, extent of hypertrophy, and function appeared similar in male and female rats. At 20 weeks, male but not female rats showed an early transition to heart failure, with onset of cavity dilatation (left ventricular diameter=155% vs. 121% of same-sex sham), loss of concentric remodeling (relative wall thickness=102% vs. 139% of sham), elevated wall stress (systolic stress=266% vs. 154% of sham), and diastolic dysfunction (deceleration of rapid filling=251% vs. 190% of sham). Left ventricular systolic pressures were higher in female compared with male rats (186+/-20 vs. 139+/-13 mm Hg), while diastolic pressures tended to be lower (14+/-4 vs. 17+/-4 mm Hg). CONCLUSIONS: Gender significantly influences the evolution of the early response to pressure overload, including the transition to heart failure in rats with aortic stenosis.

Duke Scholars

Published In

J Am Coll Cardiol

DOI

ISSN

0735-1097

Publication Date

October 1998

Volume

32

Issue

4

Start / End Page

1118 / 1125

Location

United States

Related Subject Headings

  • Ventricular Pressure
  • Ventricular Function, Left
  • Systole
  • Sex Characteristics
  • Rats, Wistar
  • Rats
  • Male
  • Hypertrophy, Left Ventricular
  • Female
  • Electrocardiography
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Douglas, P. S., Katz, S. E., Weinberg, E. O., Chen, M. H., Bishop, S. P., & Lorell, B. H. (1998). Hypertrophic remodeling: gender differences in the early response to left ventricular pressure overload. J Am Coll Cardiol, 32(4), 1118–1125. https://doi.org/10.1016/s0735-1097(98)00347-7
Douglas, P. S., S. E. Katz, E. O. Weinberg, M. H. Chen, S. P. Bishop, and B. H. Lorell. “Hypertrophic remodeling: gender differences in the early response to left ventricular pressure overload.J Am Coll Cardiol 32, no. 4 (October 1998): 1118–25. https://doi.org/10.1016/s0735-1097(98)00347-7.
Douglas PS, Katz SE, Weinberg EO, Chen MH, Bishop SP, Lorell BH. Hypertrophic remodeling: gender differences in the early response to left ventricular pressure overload. J Am Coll Cardiol. 1998 Oct;32(4):1118–25.
Douglas, P. S., et al. “Hypertrophic remodeling: gender differences in the early response to left ventricular pressure overload.J Am Coll Cardiol, vol. 32, no. 4, Oct. 1998, pp. 1118–25. Pubmed, doi:10.1016/s0735-1097(98)00347-7.
Douglas PS, Katz SE, Weinberg EO, Chen MH, Bishop SP, Lorell BH. Hypertrophic remodeling: gender differences in the early response to left ventricular pressure overload. J Am Coll Cardiol. 1998 Oct;32(4):1118–1125.
Journal cover image

Published In

J Am Coll Cardiol

DOI

ISSN

0735-1097

Publication Date

October 1998

Volume

32

Issue

4

Start / End Page

1118 / 1125

Location

United States

Related Subject Headings

  • Ventricular Pressure
  • Ventricular Function, Left
  • Systole
  • Sex Characteristics
  • Rats, Wistar
  • Rats
  • Male
  • Hypertrophy, Left Ventricular
  • Female
  • Electrocardiography