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C-reative protein and HRT
Title:The effects of hormone replacement therapy and raloxifene on
c-reactive protein and homocystcinc in healthy postmenopausal women: a
randomized, controlled trial
Author: B. Walsh, et al.
Address: Boston, MA
Source: The Journal of Clinical Endocrinology & Metabolism 85: 214-218
(January) 2000
Summary: Epidemiological observations suggest that estrogen treatment has
benefits such as a 50% decrease in the incidence of cardiovascular disease
compared to that in nonusers. Surprisingly, the Heart and Estrogen/Progestin
Replacement Study (HERS), to date the only randomized clinical trial of HRT for
the secondary prevention of cardiovascular disease, did not confirm this
long-held belief. Although treatment reduced the low-density lipoprotein levels,
there were significantly more cardiovascular events in the hormone group compared
with the placebo group during the first year. Elevated levels of C-reactive
protein, a circulating marker of inflammation, predict future myocardial
infarction, ischemic stroke, and peripheral arterial disease. Moderate elevations
in circulating homocysteine levels also predict a significantly greater risk of
coronary artery disease. Raloxifene seems to confer some of the positive benefits
of estrogen.
Comment: C-reactive protein is rapidly emerging as a marker of cardiovascular
disease risk. Unfortunately, the special sensitive assay for CRP is not widely
available. This is troubling news about estrogen replacement not providing the
protection we once thought. It is too soon to draw conclusions and should not
alter prescribing.