Nctid:
NCT00001752
Payload:
{"hasResults"=>false, "derivedSection"=>{"miscInfoModule"=>{"versionHolder"=>"2024-12-06"}, "conditionBrowseModule"=>{"meshes"=>[{"id"=>"D006937", "term"=>"Hypercholesterolemia"}], "ancestors"=>[{"id"=>"D006949", "term"=>"Hyperlipidemias"}, {"id"=>"D050171", "term"=>"Dyslipidemias"}, {"id"=>"D052439", "term"=>"Lipid Metabolism Disorders"}, {"id"=>"D008659", "term"=>"Metabolic Diseases"}], "browseLeaves"=>[{"id"=>"M9988", "name"=>"Hypercholesterolemia", "asFound"=>"Hypercholesterolemia", "relevance"=>"HIGH"}, {"id"=>"M10293", "name"=>"Inflammation", "relevance"=>"LOW"}, {"id"=>"M3620", "name"=>"Tissue Adhesions", "relevance"=>"LOW"}, {"id"=>"M10000", "name"=>"Hyperlipidemias", "relevance"=>"LOW"}, {"id"=>"M10002", "name"=>"Hyperlipoproteinemias", "relevance"=>"LOW"}, {"id"=>"M26181", "name"=>"Dyslipidemias", "relevance"=>"LOW"}, {"id"=>"M11639", "name"=>"Metabolic Diseases", "relevance"=>"LOW"}, {"id"=>"M27029", "name"=>"Lipid Metabolism Disorders", "relevance"=>"LOW"}], "browseBranches"=>[{"name"=>"Nutritional and Metabolic Diseases", "abbrev"=>"BC18"}, {"name"=>"All Conditions", "abbrev"=>"All"}, {"name"=>"Symptoms and General Pathology", "abbrev"=>"BC23"}]}, "interventionBrowseModule"=>{"meshes"=>[{"id"=>"D004967", "term"=>"Estrogens"}], "ancestors"=>[{"id"=>"D006728", "term"=>"Hormones"}, {"id"=>"D006730", "term"=>"Hormones, Hormone Substitutes, and Hormone Antagonists"}, {"id"=>"D045505", "term"=>"Physiological Effects of Drugs"}], "browseLeaves"=>[{"id"=>"M9789", "name"=>"Hormones", "relevance"=>"LOW"}, {"id"=>"M12507", "name"=>"Nitric Oxide", "relevance"=>"LOW"}, {"id"=>"M8116", "name"=>"Estrogens", "asFound"=>"Ligament", "relevance"=>"HIGH"}, {"id"=>"M9788", "name"=>"Hormone Antagonists", "relevance"=>"LOW"}, {"id"=>"T1", "name"=>"Arginine", "asFound"=>"Recurrence", "relevance"=>"HIGH"}], "browseBranches"=>[{"name"=>"All Drugs and Chemicals", "abbrev"=>"All"}, {"name"=>"Vasodilator Agents", "abbrev"=>"VaDiAg"}, {"name"=>"Respiratory System Agents", "abbrev"=>"Resp"}, {"name"=>"Amino Acids", "abbrev"=>"AA"}]}}, "protocolSection"=>{"designModule"=>{"phases"=>["PHASE2"], "studyType"=>"INTERVENTIONAL", "designInfo"=>{"primaryPurpose"=>"TREATMENT"}, "enrollmentInfo"=>{"count"=>30}}, "statusModule"=>{"overallStatus"=>"COMPLETED", "startDateStruct"=>{"date"=>"1998-09"}, "expandedAccessInfo"=>{"hasExpandedAccess"=>false}, "statusVerifiedDate"=>"1999-08", "completionDateStruct"=>{"date"=>"2000-07"}, "lastUpdateSubmitDate"=>"2008-03-03", "studyFirstSubmitDate"=>"1999-11-03", "studyFirstSubmitQcDate"=>"2002-12-09", "lastUpdatePostDateStruct"=>{"date"=>"2008-03-04", "type"=>"ESTIMATED"}, "studyFirstPostDateStruct"=>{"date"=>"2002-12-10", "type"=>"ESTIMATED"}}, "conditionsModule"=>{"keywords"=>["Adhesion Molecules", "Endothelial Function", "Inflammation", "Lipoproteins", "Nitric Oxide", "Hormone Therapy", "Postmenopausal Women"], "conditions"=>["Hypercholesterolemia", "Postmenopause"]}, "referencesModule"=>{"references"=>[{"pmid"=>"9386140", "type"=>"BACKGROUND", "citation"=>"Guetta V, Quyyumi AA, Prasad A, Panza JA, Waclawiw M, Cannon RO 3rd. The role of nitric oxide in coronary vascular effects of estrogen in postmenopausal women. Circulation. 1997 Nov 4;96(9):2795-801. doi: 10.1161/01.cir.96.9.2795."}, {"pmid"=>"1454805", "type"=>"BACKGROUND", "citation"=>"Hayashi T, Fukuto JM, Ignarro LJ, Chaudhuri G. Basal release of nitric oxide from aortic rings is greater in female rabbits than in male rabbits: implications for atherosclerosis. Proc Natl Acad Sci U S A. 1992 Dec 1;89(23):11259-63. doi: 10.1073/pnas.89.23.11259."}]}, "descriptionModule"=>{"briefSummary"=>"Estrogen therapy has been associated with reduced risk of coronary heart disease events in observational studies of postmenopausal women. Although favorable effects of estrogen on lipoprotein cholesterol levels probably account for much of this benefit, direct vascular effects (vasomotor, hemostatic, anti-inflammatory) regulated by nitric oxide (NO) may also be of importance. We have recently shown that vasodilator effects of estrogen in the coronary circulation are due to enhanced bioactivity of NO released from the endothelium. Estrogen has been shown to stimulate synthesis and activity of the enzyme NO synthase with enhanced NO synthesis in endothelial cells in culture. Because L-arginine is the natural substrate for the enzyme NO synthase, we propose that the combination of L-arginine and estrogen might have additive vasomotor, hemostatic and anti-inflammatory effects in hypercholesterolemic postmenopausal women.", "detailedDescription"=>"Estrogen therapy has been associated with reduced risk of coronary heart disease events in observational studies of postmenopausal women. Although favorable effects of estrogen on lipoprotein cholesterol levels probably account for much of this benefit, direct vascular effects (vasomotor, hemostatic, anti-inflammatory) regulated by nitric oxide (NO) may also be of importance. We have recently shown that vasodilator effects of estrogen in the coronary circulation are due to enhanced bioactivity of NO released from the endothelium. Estrogen has been shown to stimulate synthesis and activity of the enzyme NO synthase with enhanced NO synthesis in endothelial cells in culture. Because L-arginine is the natural substrate for the enzyme NO synthase, we propose that the combination of L-arginine and estrogen might have additive vasomotor, hemostatic and anti-inflammatory effects in hypercholesterolemic postmenopausal women."}, "eligibilityModule"=>{"sex"=>"FEMALE", "stdAges"=>["CHILD", "ADULT", "OLDER_ADULT"], "healthyVolunteers"=>true, "eligibilityCriteria"=>"All volunteer subjects will be assessed for study participation, including a cardiovascular physical examination and resting electrocardiogram. Fasting blood will be taken for SMAC, CBC, thyroid battery, lipid levels, estradiol and FSH levels under screening protocol 94-H-0045. A urine pregnancy test will be performed in women with a uterus and cessation of menses less than 6 months. Aspirin and non-steroidal anti-inflammatory drugs and steroidal drugs (oral, ointment, drops or inhalation) will be stopped 10 days prior to starting the study and discontinued throughout the study.\n\nThirty hypercholesterolemic (LDL greater than 130 mg/dL) postmenopausal women who have not taken estrogenic hormone, antioxidant vitamins (A, C, E), or lipid-lowering therapy in the preceding 2 months will be selected to take part in this double-blind, cross-over study.\n\nNo subjects with plasma estradiol level greater than 50 pg/ml and FSH less than 50 pg/ml.\n\nNo subjects with blood pressure greater than 160/100 mm/Hg (off medication).\n\nNo subjects smoking cigarettes within 6 months.\n\nNo pregnant subjects.\n\nNo subjects with a history of deep venous thrombosis/pulmonary embolus.\n\nNo subjects with important chronic medical conditions (cancer, coronary artery disease, diabetes mellitus, COPD, renal disease) other than hypothyroidism if the subject is euthyroid on thyroid replacement.\n\nNo subjects who refuse to follow nitrate-restricted diet for 3 days prior to each study."}, "identificationModule"=>{"nctId"=>"NCT00001752", "briefTitle"=>"Vascular and Metabolic Effects of Hormone Therapy Combined With L-Arginine in Postmenopausal Women", "organization"=>{"class"=>"NIH", "fullName"=>"National Institutes of Health Clinical Center (CC)"}, "officialTitle"=>"Vascular and Metabolic Effects of Hormone Therapy Combined With L-Arginine in Postmenopausal Women", "orgStudyIdInfo"=>{"id"=>"980158"}, "secondaryIdInfos"=>[{"id"=>"98-H-0158"}]}, "armsInterventionsModule"=>{"interventions"=>[{"name"=>"L-arginine", "type"=>"DRUG"}, {"name"=>"Estrogen", "type"=>"DRUG"}]}, "contactsLocationsModule"=>{"locations"=>[{"zip"=>"20892", "city"=>"Bethesda", "state"=>"Maryland", "country"=>"United States", "facility"=>"National Heart, Lung and Blood Institute (NHLBI)", "geoPoint"=>{"lat"=>38.98067, "lon"=>-77.10026}}]}, "sponsorCollaboratorsModule"=>{"leadSponsor"=>{"name"=>"National Heart, Lung, and Blood Institute (NHLBI)", "class"=>"NIH"}}}}
