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1.
J Clin Lipidol ; 10(5): 1091-7, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27678425

RESUMO

BACKGROUND: Cardiovascular disease (CVD) begins early in life and is associated with both the number of risk factors present and length of exposure to these risk factors including hyperlipidemia. OBJECTIVES: The clinical benefit of intensive lipid therapy over 25 years was investigated in the Familial Atherosclerosis Treatment Study-Observational Study. METHODS: Of 175 coronary artery disease subjects with mean low-density lipoprotein cholesterol (LDL-C) of 191 mg/dL and mean age of 50 years, who completed the randomized and placebo-controlled Familial Atherosclerosis Treatment Study, 100 chose receiving lipid management by their physicians (usual care [UC]) and 75 elected to receive an intensive treatment [IT] for lipid management with lovastatin (40 mg/d), niacin (2.5 g/d), and colestipol (20 g/d) from 1989 to 2004, followed by double therapy with simvastatin (40-80 mg/d) and niacin from 2005 to 2006 and by triple therapy of ezetimibe 10 mg and simvastatin 40 to 80 mg/d plus niacin during 2007 to 2012. Deaths from CVD, non-CVD, and any cause were compared between UC and IT using Cox proportional hazards model. RESULTS: UC and IT groups were similar in risk factors with the exception that IT had more severe coronary artery disease. Mean LDL-C levels were 167 mg/dL from 1988 to 2004, 97 from 2005 to 2006, and 96 from 2007 to 2012 in surviving subjects receiving UC. IT lowered LDL-C to 119, 97, and 83 mg/dL in the 3 periods, respectively. Compared with UC, IT significantly reduced total mortality (11.1 vs 26.3 per 1000 person years [PY], hazard ratio [HR] = 0.45, 95% confidence interval [CI]: 0.26-0.77, P = .003) and CVD mortality (10.6 vs 27.7 per 1000 PY, HR = 0.34, 95% CI: 0.15-0.80, P = .009). The non-CVD mortality was also reduced but was not of statistical significance (6.8 vs 12.7 per 1000 PY, HR = 0.55, 95% CI: 0.27-1.14, P = .11). CONCLUSIONS: Long-term intensive lipid therapy significantly reduced total and cardiovascular mortality in Familial Atherosclerosis Treatment Study-Observational Study. These results support the importance of lifetime risk management to improve long-term outcome.


Assuntos
Anticolesterolemiantes/uso terapêutico , Aterosclerose/tratamento farmacológico , Adulto , Aterosclerose/mortalidade , Azetidinas/uso terapêutico , LDL-Colesterol/sangue , Ensaios Clínicos como Assunto , Colestipol/uso terapêutico , Doença da Artéria Coronariana/tratamento farmacológico , Doença da Artéria Coronariana/mortalidade , Feminino , Seguimentos , Humanos , Estimativa de Kaplan-Meier , Lovastatina/uso terapêutico , Masculino , Pessoa de Meia-Idade , Niacina/uso terapêutico , Modelos de Riscos Proporcionais , Sinvastatina/uso terapêutico , Triglicerídeos/sangue
3.
J Clin Endocrinol Metab ; 91(11): 4374-80, 2006 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-16940442

RESUMO

INTRODUCTION: Exogenous androgens plus progestins can be used to suppress spermatogenesis, resulting in effective male hormonal contraception; however, induction of azoospermia can require 3-6 months, and these methods require injectable or implantable androgens. We hypothesized that testosterone (T) transdermal gel (T gel) could be combined with a depot formulation of the progestin, depomedroxyprogesterone acetate (DMPA), with or without the potent GnRH antagonist, acyline, to suppress spermatogenesis conveniently, rapidly, and reversibly. OBJECTIVES: The objectives of the study were: 1) to determine the rate of severe oligospermia (< or = 1 million sperm/ml) using T gel+DMPA; and 2) to determine whether the addition of acyline to T gel+DMPA during the first 12 wk of the regimen would accelerate and improve suppression of spermatogenesis. METHODS: Forty-four healthy men, ages 18-55 yr, were randomized to T gel (100 mg daily)+DMPA (300 mg/3 months) or acyline (300 microg/kg.2 wk x 12 wk)+T gel+DMPA. Thirty-eight men completed the 24-wk treatment protocol. RESULTS: All men had dramatic suppression of spermatogenesis; 90% of the subjects became severely oligospermic, a rate comparable to implantable and injectable T+progestin combinations. The addition of acyline did not significantly accelerate spermatogenic suppression or improve rates of severe oligospermia. There were no serious adverse events, and there were minimal changes in weight, serum lipids, and prostate-specific antigen. CONCLUSIONS: The combination of T gel+DMPA is a promising new regimen in male contraception. The addition of the GnRH antagonist acyline, as part of an induction phase in a male contraception regimen, has limited clinical utility. Additional studies using T gel for male contraception are warranted.


Assuntos
Anticoncepcionais Masculinos/farmacologia , Hormônio Liberador de Gonadotropina/antagonistas & inibidores , Acetato de Medroxiprogesterona/farmacologia , Testosterona/farmacologia , Administração Tópica , Adolescente , Adulto , Peso Corporal/efeitos dos fármacos , Anticoncepcionais Masculinos/administração & dosagem , Anticoncepcionais Masculinos/efeitos adversos , Vias de Administração de Medicamentos , Combinação de Medicamentos , Géis , Gonadotropinas/sangue , Humanos , Injeções Subcutâneas , Insulina/sangue , Lipídeos/sangue , Masculino , Acetato de Medroxiprogesterona/administração & dosagem , Acetato de Medroxiprogesterona/efeitos adversos , Pessoa de Meia-Idade , Proteínas , Globulina de Ligação a Hormônio Sexual/análise , Contagem de Espermatozoides , Espermatogênese/efeitos dos fármacos , Testosterona/administração & dosagem , Testosterona/efeitos adversos , Testosterona/sangue , Resultado do Tratamento
4.
Am J Kidney Dis ; 47(2): 251-62, 2006 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-16431254

RESUMO

BACKGROUND: Hypogonadism and anemia are common comorbid conditions in dialysis patients. Testosterone replacement may improve such clinical parameters as anemia, sarcopenia, and low libido. Additionally, by increasing hemoglobin levels, testosterone replacement may allow for a dose reduction in recombinant human erythropoietin (rHuEPO), thereby reducing cost. METHODS: This phase IV, single-center, placebo-controlled, double-blind study assessed the effect of transdermal testosterone on serum testosterone levels, rHuEPO dose required to maintain hemoglobin level, bone mineral content, lean body mass and fat content, cholesterol level, sexual function, and mood. Forty hypogonadal male hemodialysis patients who were administered rHuEPO were randomly assigned to 100 mg of topical 1% testosterone gel (Testim; Auxilium Pharmaceuticals, Norristown, PA) or placebo, applied daily for 6 months. RESULTS: Forty men with a mean age of 56 years and baseline serum testosterone level less than 300 ng/dL (< 10.4 nmol/L) participated in this trial. In men assigned to administration of transdermal testosterone, there was an increase beyond that in the placebo group in mean serum testosterone (77.1 ng/dL [2.7 nmol/L]), dihydrotestosterone (DHT; 0.8 nmol/L), and estradiol levels (6.3 pg/mL [23.0 pmol/L]) and a decrease in mean serum luteinizing hormone levels (-3.1 IU/L). Compared with subjects administered placebo, participants on testosterone replacement therapy did not show an appreciable change in rHuEPO dose (mean difference adjusted for baseline values, 12.6 U/kg/wk; P = 0.73), bone mineral density, lean body mass or fat content, cholesterol level, sexual function, or mood. CONCLUSION: Daily administration of 100 mg of topical 1% testosterone gel for 6 months failed to significantly increase serum testosterone or DHT levels in hypogonadal men with end-stage renal disease. Treatment with transdermal testosterone did not impact on rHuEPO requirement or clinical parameters in this small placebo-controlled study. Greater serum testosterone levels may be required to show clinical benefit in men with end-stage renal disease.


Assuntos
Androgênios/administração & dosagem , Anemia/tratamento farmacológico , Anemia/etiologia , Eritropoetina/administração & dosagem , Falência Renal Crônica/complicações , Testosterona/administração & dosagem , Administração Cutânea , Método Duplo-Cego , Humanos , Masculino , Pessoa de Meia-Idade , Proteínas Recombinantes
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