It is gratifying to learn that
the Survival And Ventricular Enlargement (SAVE) study continues as a
highly cited publication. A major part of the attractiveness and
impact of this clinical trial stems from its firm and, at the time,
novel conceptual foundation. The treatment of patients with heart
failure was directed at improving pump function or hemodynamics. SAVE
enrolled patients with recent myocardial infarction and asymptomatic
left ventricular dysfunction to test the concept that long-term
therapy with an angiotensin converting enzyme inhibitor (captopril)
would, by attenuating left ventricular
enlargement, result in improved clinical outcome. As such, it was the
first major test of the ventricular remodeling hypothesis. The late
Dr. Janice Pfeffer generated the underlying study hypothesis in her
animal studies and has been affectionately termed, "The Mother of
SAVE."
Retracing her career path serves to
underscore the importance of the integration of basic investigators in
Departments of Medicine. Janice Sikorski Pfeffer had a passion for the
educational process. As an undergraduate at Rockford College, she
thrived in chemistry and mathematics. However, a turning point
occurred during a turtle heart experiment as part of a physiology
course. She and her laboratory partner, Marc Pfeffer, became so caught
up in integrative physiologic mechanisms that they together went on to
obtain their Ph.D. degrees in Physiology and Biophysics from the
University of Oklahoma. There the lab partners married, and continued
their careers under the mentorship of Dr. Edward Frohlich. Janice
Pfeffer’s Ph.D. thesis "Longitudinal Changes in Cardiac
Function and Geometry During the Natural Development of Left
Ventricular Hypertrophy in the Spontaneously Hypertensive Rat"
became the underpinnings for the remodeling concept tested in SAVE.
She continued her studies as a
post-doctoral fellow in Dr. Eugene Braunwald’s laboratory at the
then Peter Bent Brigham Hospital, Harvard Medical School, as Marc
pursued internship and medical residency training. The Braunwald
laboratories were at the forefront of establishing the principle of
infarct size limitation. Dr. Janice Pfeffer utilized the infarct model
not for myocardial salvage, but rather to determine the relationship
between the extent of infarction and left ventricular size and
function. She demonstrated that progressive ventricular enlargement
occurs following an infarction, continuing long after the histologic
resolution of the infarcted region. Employing her prior experience in
hypertension, she then developed and tested the hypothesis that this
insidious process of ventricular enlargement was amenable to
pharmacologic therapy. Her pivotal study, "Influence of Chronic
Captopril Therapy on the Infarcted Left Ventricle of the Rat" (by
JM Pfeffer, MA Pfeffer, E Braunwald, Circ. Res. 57: 84-95,
1985), definitively demonstrated that the process of ventricular
enlargement, termed "ventricular remodeling," could be
attenuated. These favorable alterations in ventricular remodeling in
the animal model were associated with improved cardiac performance and
prolonged survival. These animal studies introduced the concept of
ventricular remodeling as a potential therapeutic target. Small
mechanistic clinical studies then confirmed that ventricular
remodeling occurs in selected patients following infarction and that
the use of an ACE inhibitor could similarly attenuate this process.
The SAVE study did indeed demonstrate
that a mortality benefit could be achieved in relatively asymptomatic
patients with myocardial infarctions with this new use of captopril
therapy, and a robust echocardiographic sub-study confirmed the
remodeling hypothesis.
Use of ACE inhibitors in MI has
become well studied with consistent favorable results.
Beyond the concrete benefits from the
utilization of an ACE inhibitor to prevent morbidity and mortality in
myocardial infarction survivors, Dr. Janice Pfeffer introduced
ventricular remodeling as a therapeutic target for new product
development as well as advancing our understanding of pathophysiology.
Her accomplishments also underscore the importance of a basic science
career fostered within a clinical department of medicine.
Dr. Marc A. Pfeffer
Brigham and Women’s Hospital, Harvard University
Department of Medicine
Boston, MA, USA