Differential effects of oral versus transdermal estrogen replacement therapy on C-reactive protein in postmenopausal women
Wanpen Vongpatanasin, MD, FACC*,*,
Meryem Tuncel, MD*,
Zhongyun Wang, MD*,
Debbie Arbique, RN*,
Borna Mehrad, MD* and
Ishwarlal Jialal, MD, PhD
* Donald W. Reynolds Cardiovascular Clinical Research Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
Laboratory for Atherosclerosis and Metabolic Research, Department of Pathology, University of California at Davis Medical Center, Sacramento, California, USA

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Figure 1 Individual and summary data of all subjects showing C-reactive protein (CRP) levels before and after oral estrogen (left panel), placebo (middle panel), and transdermal estrogen (right panel). Transdermal estrogen had no effect on CRP. Oral estrogen administration for eight weeks evoked a more than twofold increase in CRP (*p < 0.01 vs. baseline, placebo, and transdermal estrogen).
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Figure 2 Scatter plots showing the inverse correlation between changes in serum insulin-like growth factor-1 (IGF-1) from baseline and changes in C-reactive protein (CRP) from baseline, regardless of the treatment each woman received.
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