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Original Studies |
Brigham and Womens Hospital (B.W.W.), Boston, Massachusetts 02115; Lilly Research Laboratories (S.P., R.A.D., D.A.C., P.W.A.), Indianapolis, Indiana 46285; Oklahoma University Health Sciences Center (R.A.W.), Oklahoma City, Oklahoma 73190; and University of Vermont (R.P.T.), Burlington, Vermont 05405
Address all correspondence and requests for reprints to: Brian W. Walsh, M.D., Brigham and Womens Hospital, 75 Francis Street, Boston, Massachusetts 02115. E-mail: bwwalsh{at}bics.bwh.harvard.edu
C-Reactive protein and homocysteine are independent risk factors for the development of cardiovascular disease. This study compared the effects of hormone replacement therapy (HRT) and raloxifene on serum C-reactive protein and homocysteine levels as markers of cardiovascular risk in healthy postmenopausal women. Healthy postmenopausal women (n = 390) were enrolled in a double blind, randomized, placebo-controlled, 6-month trial at eight out-patient sites in the United States. Women were randomly assigned to receive continuous combined HRT (0.625 mg/day conjugated equine estrogen and 2.5 mg/day medroxyprogesterone acetate), raloxifene (60 or 120 mg/day), or placebo for 6 months. C-Reactive protein and homocysteine were measured in baseline and 6-month serum samples. HRT increased C-reactive protein levels by 84% (P < 0.001), whereas raloxifene (60 and 120 mg/day) had no significant effect (-6% and -4%, respectively; P > 0.2). Raloxifene (60 and 120 mg/day) significantly lowered serum levels of homocysteine by 8% (P = 0.014) and 6% (P = 0.024), respectively, similar to the 7% (P = 0.014) reduction obtained with HRT.
We conclude that HRT and raloxifene lower serum homocysteine levels to a comparable extent in postmenopausal women. Whereas cardiovascular risk predicted by C-reactive protein in healthy postmenopausal women is not influenced by raloxifene, the relationship between elevated C-reactive protein levels with HRT and cardiovascular disease events requires further study.
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E. Barrett-Connor, D. Grady, A. Sashegyi, P. W. Anderson, D. A. Cox, K. Hoszowski, P. Rautaharju, K. D. Harper, and for the MORE Investigators Raloxifene and Cardiovascular Events in Osteoporotic Postmenopausal Women: Four-Year Results From the MORE (Multiple Outcomes of Raloxifene Evaluation) Randomized Trial JAMA, February 20, 2002; 287(7): 847 - 857. [Abstract] [Full Text] [PDF] |
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R. Marcus, M. Wong, H. Heath III, and J. L. Stock Antiresorptive Treatment of Postmenopausal Osteoporosis: Comparison of Study Designs and Outcomes in Large Clinical Trials with Fracture as an Endpoint Endocr. Rev., February 1, 2002; 23(1): 16 - 37. [Abstract] [Full Text] [PDF] |
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B. Andersson, G. Johannsson, G. Holm, B.-A. Bengtsson, A. Sashegyi, I. Pavo, T. Mason, and P. W. Anderson Raloxifene Does Not Affect Insulin Sensitivity or Glycemic Control in Postmenopausal Women with Type 2 Diabetes Mellitus: A Randomized Clinical Trial J. Clin. Endocrinol. Metab., January 1, 2002; 87(1): 122 - 128. [Abstract] [Full Text] [PDF] |
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V. C. Jordan, S. Gapstur, and M. Morrow Selective Estrogen Receptor Modulation and Reduction in Risk of Breast Cancer, Osteoporosis, and Coronary Heart Disease J Natl Cancer Inst, October 3, 2001; 93(19): 1449 - 1457. [Abstract] [Full Text] [PDF] |
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S. H.-J. Hsu, W.-C. Cheng, M.-W. Jang, and K.-S. Tsai Effects of Long-Term Use of Raloxifene, a Selective Estrogen Receptor Modulator, on Thyroid Function Test Profiles Clin. Chem., October 1, 2001; 47(10): 1865 - 1867. [Full Text] [PDF] |
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D. M. Herrington, K. B. Brosnihan, B. E. Pusser, E. W. Seely, P. M. Ridker, N. Rifai, and D. B. MacLean Differential Effects of E and Droloxifene on C-Reactive Protein and Other Markers of Inflammation in Healthy Postmenopausal Women J. Clin. Endocrinol. Metab., September 1, 2001; 86(9): 4216 - 4222. [Abstract] [Full Text] [PDF] |
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A. Saitta, D. Altavilla, D. Cucinotta, N. Morabito, N. Frisina, F. Corrado, R. D'Anna, A. Lasco, G. Squadrito, A. Gaudio, et al. Randomized, Double-Blind, Placebo-Controlled Study on Effects of Raloxifene and Hormone Replacement Therapy on Plasma NO Concentrations, Endothelin-1 Levels, and Endothelium-Dependent Vasodilation in Postmenopausal Women Arterioscler Thromb Vasc Biol, September 1, 2001; 21(9): 1512 - 1519. [Abstract] [Full Text] [PDF] |
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M. D. P. Luyer, S. Khosla, W. G. Owen, and V. M. Miller Prospective Randomized Study of Effects of Unopposed Estrogen Replacement Therapy on Markers of Coagulation and Inflammation in Postmenopausal Women J. Clin. Endocrinol. Metab., August 1, 2001; 86(8): 3629 - 3634. [Abstract] [Full Text] [PDF] |
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S. Yamada, T. Gotoh, Y. Nakashima, K. Kayaba, S. Ishikawa, N. Nago, Y. Nakamura, Y. Itoh, and E. Kajii Distribution of Serum C-Reactive Protein and Its Association with Atherosclerotic Risk Factors in a Japanese Population : Jichi Medical School Cohort Study Am. J. Epidemiol., June 15, 2001; 153(12): 1183 - 1190. [Abstract] [Full Text] [PDF] |
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R. P. Tracy Is Visceral Adiposity the "Enemy Within"? Arterioscler Thromb Vasc Biol, June 1, 2001; 21(6): 881 - 883. [Full Text] [PDF] |
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N. N. Chan, T. M.M. Tan, and S. J. Hurel Hyperhomocysteinemia and Macroangiopathy in Type 2 Diabetes Diabetes Care, June 1, 2001; 24(6): 1123 - 1124. [Full Text] |
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M. Buysschaert and M.P. Hermans Response to Chan et al.: Hyperhomocysteinemia and Macroangiopathy in Type 2 Diabetes Diabetes Care, June 1, 2001; 24(6): 1124 - 1125. [Full Text] |
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G. Sesmilo, B. M. K. Biller, J. Llevadot, D. Hayden, G. Hanson, N. Rifai, and A. Klibanski Effects of Growth Hormone (GH) Administration on Homocyst(e)ine Levels in Men with GH Deficiency: A Randomized Controlled Trial J. Clin. Endocrinol. Metab., April 1, 2001; 86(4): 1518 - 1524. [Abstract] [Full Text] |
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M. Cushman, J. P. Costantino, R. P. Tracy, K. Song, L. Buckley, J. D. Roberts, and D. N. Krag Tamoxifen and Cardiac Risk Factors in Healthy Women : Suggestion of an Anti-inflammatory Effect Arterioscler Thromb Vasc Biol, February 1, 2001; 21(2): 255 - 261. [Abstract] [Full Text] [PDF] |
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