TY - JOUR
T1 - Risk factors associated with cardiovascular events during testosterone administration in older men with mobility limitation
AU - Basaria, Shehzad
AU - Davda, Maithili N.
AU - Travison, Thomas G.
AU - Ulloor, Jagadish
AU - Singh, Ravinder
AU - Bhasin, Shalender
N1 - Funding Information:
This study was supported primarily by a grant from the National Institutes on Aging administered under a cooperative agreement ( 1UO1AG14369 Additional support was provided by Boston Claude D. Pepper Older Americans Independence Center grant ( 5P30AG031679 ) and a BU Clinical and Translational Science Institute grant ( ). Testosterone and placebo gel for the study were provided by Auxilium Pharmaceuticals, Inc., Norristown, PA.
PY - 2013/2
Y1 - 2013/2
N2 - Background.Testosterone in Older Men with Mobility Limitations Trial found an increased incidence of cardiovascular events in men randomized to testosterone, resulting in enrollment cessation by trial's Data and Safety Monitoring Board. We evaluated changes in gonadal hormones and markers of inflammation and coagulation to elucidate risk factors associated with cardiovascular events.Methods.Men aged 65 years or more, with mobility limitation, total testosterone 100-350 ng/dL, or free testosterone less than 50 pg/mL, were randomized to placebo or 10 g testosterone gel daily for 6 months. Changes in total and free testosterone, estradiol and estrone, C-reactive protein, interleukin 6, fibrinogen, plasminogen activator inhibitor-1, and pro-brain naturetic peptide were compared between groups and within the testosterone group between subjects who experienced cardiovascular events and those who did not.Results.Of 209 men randomized (mean age 74 years), gonadal hormones and biomarkers were available in 179 men. Baseline body mass index, gonadal hormones, lipids, Framingham risk scores, and other biomarkers were similar in the two treatment groups. Within the testosterone group, the 6-month increase in free testosterone was significantly greater in men who experienced cardiovascular events than in those who did not [mean (95% confidence interval), 10.6 (4.6-16.7) vs 5.2 (3.0-7.5) ng/dL, p =. 05]. In multivariable logistic regression analysis, the change in the serum levels of free testosterone was associated with cardiovascular events.Conclusion.Mobility-limited older men who experienced cardiovascular events had greater increases in serum free testosterone levels than those who did not.
AB - Background.Testosterone in Older Men with Mobility Limitations Trial found an increased incidence of cardiovascular events in men randomized to testosterone, resulting in enrollment cessation by trial's Data and Safety Monitoring Board. We evaluated changes in gonadal hormones and markers of inflammation and coagulation to elucidate risk factors associated with cardiovascular events.Methods.Men aged 65 years or more, with mobility limitation, total testosterone 100-350 ng/dL, or free testosterone less than 50 pg/mL, were randomized to placebo or 10 g testosterone gel daily for 6 months. Changes in total and free testosterone, estradiol and estrone, C-reactive protein, interleukin 6, fibrinogen, plasminogen activator inhibitor-1, and pro-brain naturetic peptide were compared between groups and within the testosterone group between subjects who experienced cardiovascular events and those who did not.Results.Of 209 men randomized (mean age 74 years), gonadal hormones and biomarkers were available in 179 men. Baseline body mass index, gonadal hormones, lipids, Framingham risk scores, and other biomarkers were similar in the two treatment groups. Within the testosterone group, the 6-month increase in free testosterone was significantly greater in men who experienced cardiovascular events than in those who did not [mean (95% confidence interval), 10.6 (4.6-16.7) vs 5.2 (3.0-7.5) ng/dL, p =. 05]. In multivariable logistic regression analysis, the change in the serum levels of free testosterone was associated with cardiovascular events.Conclusion.Mobility-limited older men who experienced cardiovascular events had greater increases in serum free testosterone levels than those who did not.
KW - Cardiovascular disease
KW - Mobility limitation
KW - Older men
KW - Testosterone
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U2 - 10.1093/gerona/gls138
DO - 10.1093/gerona/gls138
M3 - Article
C2 - 22562960
AN - SCOPUS:84871753207
SN - 1079-5006
VL - 68
SP - 153
EP - 160
JO - Journals of Gerontology - Series A Biological Sciences and Medical Sciences
JF - Journals of Gerontology - Series A Biological Sciences and Medical Sciences
IS - 2
ER -