- ICH GCP
- Registro de ensayos clínicos de EE. UU.
- Ensayo clínico NCT00256646
Markers and Mechanisms of Vascular Disease in Type II Diabetes
CSP #465D - Markers And Mechanisms of Vascular Disease in Type II Diabetes
OBJECTIVES: Vascular Disease is the leading cause of complications and death in patients with diabetes. Risk markers and underlying mechanisms have not been fully elucidated, and may differ from those in non-diabetic individuals. The unifying theme for the Program Project is that hyperglycemia and insulin resistance alter a number of biological processes which interact in vicious cycles to accelerate atherogenesis and are consequently major underlying risk factors for vascular disease. The overall objectives are to define these unique processes and to elucidate underlying biochemical, metabolic, and genetic determinants of vascular disease complications in diabetes.
RESEARCH PLAN: Over the past 4 years, we have collaborated with the DCCT/EDIC Study Group, and have made novel observations regarding vascular disease pathogenesis in Type 1 Diabetes. This work has focused our studies on specific pathogenic processes. We will now study a Type 2 Diabetes cohort from the VA Cooperative Study, "Glycemic Control and the Complications of Diabetes, Type 2", with high vascular disease event rates. These collaborations provide a unique opportunity to address the pathogenesis of accelerated atherogenesis in the two main types of diabetes, and will greatly augment the scientific knowledge that will be gained in the conduct of these world-class prospective trials.
METHODS: The Program Project has 4 projects and 3 cores. Project 1 will assess lipoproteins, glycoxidative stress, and inflammation as risk factors in studies involving Type 2 Diabetes patients and cultured cell systems. Based on preliminary data from our initial studies Type 1 patients, changes in the NMR lipoprotein subclass profile will be emphasized.
Project 2 will elucidate interactions between inflammation, modifications of lipoproteins, and autoimmunity in vascular disease risk. These novel concepts are also based upon exciting preliminary data pertaining to LDL-antibody complexes.
Project 3 will pursue interesting preliminary data and define the role of the kallikrein-kinin system in vascular disease complications, with effects on mitogenesis and matrix production.
Project 4 will assess the role of the Insulin Resistance Syndrome and novel factors secreted from adipocytes in the pathophysiology of biochemical risk factors and cardiovascular complications.
Cores include an Administrative Core, a Biostatistics and Epidemiology Core which will link with the trials data coordinating centers, and Molecular and Statistical Genetics Core. Investigators will work in close collaboration with the VA Executive Committee, Study Centers, the Hines Coordinating Center, and some of the other ancillary studies. All data analysis involving clinical outcomes will be performed at the Hines Coordinating Center.
There is true synergism among the projects at both scientific and logistical levels. The Program Project design allows for interactions among multidisciplinary investigators studying the same cohort, which will define how multiple pathological processes interact at the level of the arterial wall to promote atherosclerosis.
Descripción general del estudio
Estado
Condiciones
Intervención / Tratamiento
Descripción detallada
Primary Hypothesis:
Secondary Hypotheses:
Primary Outcomes:
Study Abstract:
OBJECTIVES: Vascular Disease is the leading cause of complications and death in patients with diabetes. Risk markers and underlying mechanisms have not been fully elucidated, and may differ from those in non-diabetic individuals. The unifying theme for the Program Project is that hyperglycemia and insulin resistance alter a number of biological processes which interact in vicious cycles to accelerate atherogenesis and are consequently major underlying risk factors for vascular disease. The overall objectives are to define these unique processes and to elucidate underlying biochemical, metabolic, and genetic determinants of vascular disease complications in diabetes.
RESEARCH PLAN: Over the past 4 years, we have collaborated with the DCCT/EDIC Study Group, and have made novel observations regarding vascular disease pathogenesis in Type 1 Diabetes. This work has focused our studies on specific pathogenic processes. We will now study a Type 2 Diabetes cohort from the VA Cooperative Study, "Glycemic Control and the Complications of Diabetes, Type 2", with high vascular disease event rates. These collaborations provide a unique opportunity to address the pathogenesis of accelerated atherogenesis in the two main types of diabetes, and will greatly augment the scientific knowledge that will be gained in the conduct of these world-class prospective trials.
METHODS: The Program Project has 4 projects and 3 cores. Project 1 will assess lipoproteins, glycoxidative stress, and inflammation as risk factors in studies involving Type 2 Diabetes patients and cultured cell systems. Based on preliminary data from our initial studies Type 1 patients, changes in the NMR lipoprotein subclass profile will be emphasized.
Project 2 will elucidate interactions between inflammation, modifications of lipoproteins, and autoimmunity in vascular disease risk. These novel concepts are also based upon exciting preliminary data pertaining to LDL-antibody complexes.
Project 3 will pursue interesting preliminary data and define the role of the kallikrein-kinin system in vascular disease complications, with effects on mitogenesis and matrix production.
Project 4 will assess the role of the Insulin Resistance Syndrome and novel factors secreted from adipocytes in the pathophysiology of biochemical risk factors and cardiovascular complications.
Cores include an Administrative Core, a Biostatistics and Epidemiology Core which will link with the trials data coordinating centers, and Molecular and Statistical Genetics Core. Investigators will work in close collaboration with the VA Executive Committee, Study Centers, the Hines Coordinating Center, and some of the other ancillary studies. All data analysis involving clinical outcomes will be performed at the Hines Coordinating Center.
There is true synergism among the projects at both scientific and logistical levels. The Program Project design allows for interactions among multidisciplinary investigators studying the same cohort, which will define how multiple pathological processes interact at the level of the arterial wall to promote atherosclerosis.
Main Manuscript:
There is no independent data for this study, it was part of a larger study. Therefore there will be no results for this record/study.
Tipo de estudio
Inscripción (Actual)
Contactos y Ubicaciones
Ubicaciones de estudio
-
-
Arizona
-
Phoenix, Arizona, Estados Unidos, 85012
- Carl T. Hayden VA Medical Center
-
Tucson, Arizona, Estados Unidos, 85723
- Southern Arizona VA Health Care System, Tucson
-
-
California
-
Fresno, California, Estados Unidos, 93703
- VA Central California Health Care System, Fresno
-
Long Beach, California, Estados Unidos, 90822
- VA Medical Center, Long Beach
-
San Diego, California, Estados Unidos, 92161
- VA San Diego Healthcare System, San Diego
-
-
Florida
-
Miami, Florida, Estados Unidos, 33125
- Miami VA Healthcare System, Miami, FL
-
-
Illinois
-
Hines, Illinois, Estados Unidos, 60141-5000
- Edward Hines, Jr. VA Hospital
-
-
Indiana
-
Indianapolis, Indiana, Estados Unidos, 46202-2884
- Richard Roudebush VA Medical Center, Indianapolis
-
-
Kentucky
-
Lexington, Kentucky, Estados Unidos, 40502
- VA Medical Center, Lexington
-
-
Minnesota
-
Minneapolis, Minnesota, Estados Unidos, 55417
- VA Medical Center, Minneapolis
-
-
Nebraska
-
Omaha, Nebraska, Estados Unidos, 68105-1873
- VA Medical Center, Omaha
-
-
New Jersey
-
East Orange, New Jersey, Estados Unidos, 07018
- VA New Jersey Health Care System, East Orange
-
-
Pennsylvania
-
Pittsburgh, Pennsylvania, Estados Unidos, 15240
- VA Pittsburgh Health Care System
-
-
Texas
-
Houston, Texas, Estados Unidos, 77030
- Michael E. DeBakey VA Medical Center (152)
-
San Antonio, Texas, Estados Unidos, 78229
- VA South Texas Health Care System, San Antonio
-
-
Virginia
-
Salem, Virginia, Estados Unidos, 24153
- VA Medical Center, Salem VA
-
-
-
-
-
San Juan, Puerto Rico, 00921
- VA Medical Center, San Juan
-
-
Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Método de muestreo
Población de estudio
Descripción
Inclusion Criteria:
Patients with type 2 DM who are no longer responsive to maximum dose of one or more oral agents
Exclusion Criteria:
Patients that did not participate in the VADT.
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
Cohortes e Intervenciones
Grupo / Cohorte |
Intervención / Tratamiento |
---|---|
Group 1
Patients who are enrolled in the ongoing randomized clinical trial AGlycemic Control and Complications in Diabetes Mellitus Type 2".
|
ROSIGLITAZONE (roe si GLI ta zone) helps to treat type 2 diabetes.
It helps to control blood sugar.
Treatment is combined with diet and exercise.
|
¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Periodo de tiempo |
---|---|
The primary outcome measure is to define these unique processes and to elucidate underlying biochemical, metabolic, and genetic determinants of vascular disease complications in diabetes.
Periodo de tiempo: 2, 4, and 6 years.
|
2, 4, and 6 years.
|
Colaboradores e Investigadores
Patrocinador
Colaboradores
Investigadores
- Silla de estudio: Carlos Abraira, MD, Miami VA Healthcare System, Miami, FL
Publicaciones y enlaces útiles
Publicaciones Generales
- Lopes-Virella MF, Hunt KJ, Baker NL, Virella G, Moritz T; VADT Investigators. The levels of MDA-LDL in circulating immune complexes predict myocardial infarction in the VADT study. Atherosclerosis. 2012 Oct;224(2):526-31. doi: 10.1016/j.atherosclerosis.2012.08.006. Epub 2012 Aug 21.
- Bhensdadia NM, Hunt KJ, Lopes-Virella MF, Michael Tucker J, Mataria MR, Alge JL, Neely BA, Janech MG, Arthur JM; Veterans Affairs Diabetes Trial (VADT) study group. Urine haptoglobin levels predict early renal functional decline in patients with type 2 diabetes. Kidney Int. 2013 Jun;83(6):1136-43. doi: 10.1038/ki.2013.57. Epub 2013 Mar 27.
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio
Finalización primaria (Actual)
Finalización del estudio (Actual)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Estimar)
Actualizaciones de registros de estudio
Última actualización publicada (Estimar)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- 465D
Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .
Ensayos clínicos sobre Diabetes mellitus tipo 2
-
AstraZenecaReclutamiento
-
Daewoong Pharmaceutical Co. LTD.Aún no reclutandoDM2 (Diabetes Mellitus Tipo 2)
-
University of ZambiaUniversity Teaching Hospital, Lusaka, ZambiaAún no reclutandoDiabetes Mellitus Tipo 2 Sin Complicaciones
-
Zhongda HospitalReclutamientoDiabetes mellitus tipo 2 (DM2)Porcelana
-
Newsoara Biopharma Co., Ltd.ReclutamientoDM2 (Diabetes Mellitus Tipo 2)Porcelana
-
Shanghai Golden Leaf MedTec Co. LtdActivo, no reclutandoDiabetes mellitus tipo 2 (DM2)Porcelana
-
Haisco Pharmaceutical Group Co., Ltd.TerminadoDM2 (Diabetes Mellitus Tipo 2)Porcelana
-
PegBio Co., Ltd.TerminadoDiabetes mellitus tipo 2 (DM2)Porcelana
-
Oramed, Ltd.IntegriumTerminadoDM2 (Diabetes Mellitus Tipo 2)Estados Unidos