Early and late changes in markers of aortic stiffness with breast cancer therapy

S Grover1, P W Lou, C Bradbrook

  • 1Cardiology Department, Flinders Medical Centre, Adelaide, South Australia, Australia; Flinders Cardiac Cardiovascular Magnetic Resonance Department, Flinders Medical Centre, Adelaide, South Australia, Australia; Health Sciences, Flinders University, Adelaide, South Australia, Australia; Heart Health, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia.

Internal Medicine Journal
|November 19, 2014
PubMed
Abstract

Insights

Breast cancer chemotherapy, including anthracyclines, causes acute arterial stiffening that partially reverses after treatment. Anthracyclines lead to more severe arterial remodeling effects.

Area of Science:

  • Cardiovascular Medicine
  • Oncology
  • Medical Imaging

Background:

  • Anthracyclines and trastuzumab are known cardiotoxins, potentially causing negative arterial remodeling.
  • The reversibility of chemotherapy-induced arterial changes and trastuzumab's specific arterial effects remain unclear.

Purpose of the Study:

  • To investigate arterial remodeling changes following anthracycline and trastuzumab therapy in breast cancer patients.
  • To assess the reversibility of these arterial changes post-therapy.

Main Methods:

  • Prospective study using cardiovascular magnetic resonance (CMR) imaging in breast cancer patients and healthy volunteers.
  • Measurements included aortic pulse wave velocity (PWV) and distensibility at the ascending aorta (AA) and proximal descending aorta (PDA) at baseline and 1, 4, and 14 months post-therapy.

Main Results:

  • Chemotherapy induced acute increases in PWV and decreases in AA distensibility, with partial reversal by 14 months.
  • Anthracycline-exposed patients showed greater reductions in AA distensibility.
  • Significant reductions in PDA distensibility were observed at 14 months.

Conclusions:

  • Contemporary breast cancer chemotherapy causes acute arterial stiffening and reduced distensibility, particularly with anthracyclines.
  • These arterial changes partially reverse approximately one year after therapy cessation.