- ICH GCP
- Registro de ensayos clínicos de EE. UU.
- Ensayo clínico NCT00036478
Use of Muscle Spectroscopy to Evaluate Mitochondrial Dysfunction in HIV-Infected Patients
Pilot Study to Evaluate the Use of Phosphorus P31 Nuclear Magnetic Resonance Spectroscopy as a Non-Invasive Means to Evaluate Mitochondrial Dysfunction in HIV-Infected Subjects
The purpose of this study is to see if magnetic resonance spectroscopy (MRS) can be used to detect damage to the mitochondria in HIV-infected patients taking nucleoside reverse transcriptase inhibitor (NRTI) drugs.
HIV-infected patients taking NRTI drugs may have an increase in a chemical in their blood called lactate. High lactate levels may damage the energy source of the cell (mitochondria). Damage to mitochondria may cause lactic acidosis, liver failure, and other problems. It is important to find effective ways to see if the mitochondria of HIV-infected patients have been damaged. This study will see if MRS can be used to determine mitochondrial damage.
Descripción general del estudio
Estado
Condiciones
Descripción detallada
NRTI-related mitochondrial toxicity has been implicated in some fatal cases of lactic acidosis and liver failure. In addition, some investigators believe NRTI-related mitochondrial toxicity to be the culprit in the development of peripheral neuropathy and lipodystrophy in HIV-infected patients. There is a need for a sensitive, reproducible, and noninvasive marker of mitochondrial dysfunction. To date, the only available noninvasive marker is lactate, but lactate testing is insensitive and the significance and reproducibility of lactate levels in the HIV-infected population are questionable. Spectroscopy promises to be a very useful alternative for the evaluation of the in vivo effect of NRTIs on mitochondrial function.
Prior to the screening visit, HIV-infected participants must fast for at least 12 hours and refrain from exercise for at least 24 hours. At the screening visit, all participants have blood drawn for lactate measurements and tests for hepatitis B and C. HIV-uninfected participants have an HIV test. Women who are able to become pregnant have a pregnancy test.
Prior to the entry visit, HIV-infected participants must fast for 12 hours and refrain from exercise for 3 days. At the entry visit, all participants have blood drawn for lactate measurements and women have repeat pregnancy tests. Participants have an MRS scan, which takes approximately 60-80 minutes.
Tipo de estudio
Contactos y Ubicaciones
Ubicaciones de estudio
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Alabama
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Birmingham, Alabama, Estados Unidos, 35294
- University of Alabama at Birmingham
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California
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La Jolla, California, Estados Unidos, 92093
- University of California, San Diego
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San Diego, California, Estados Unidos, 92103
- Univ of California, San Diego Antiviral Research Ctr
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Nebraska
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Omaha, Nebraska, Estados Unidos, 681985130
- Univ of Nebraska Med Ctr
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Omaha, Nebraska, Estados Unidos, 681985400
- Univ of Nebraska Medical CTR
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New York
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New York, New York, Estados Unidos, 10003
- Beth Israel Med Ctr
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North Carolina
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Durham, North Carolina, Estados Unidos, 27710
- Duke University Medical Center
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Tennessee
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Nashville, Tennessee, Estados Unidos, 37203
- Vanderbilt Univ Med Ctr
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Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Descripción
Inclusion Criteria
Participants in Groups 1 and 2 may be eligible for this study if they:
- Are at least 18 years old.
Participants in Group 1 (HIV-uninfected) may be eligible for this study if they:
- Are HIV-uninfected within 30 days prior to study entry.
Participants in Group 2 (HIV-infected) may be eligible for this study if they:
- Are HIV infected.
- Have been taking an NRTI-containing anti-HIV drug regimen for 8 weeks or more prior to study entry.
- Have a nonexercise venous lactate level greater than 2 times the upper limit of normal (ULN) on 2 repeated measurements.
Exclusion Criteria
Participants in Groups 1 and 2 may not be eligible for this study if they:
- Have severe claustrophobia.
- Have severe symptoms that, in the opinion of the investigator, would interfere with the ability of participants to perform the exercise required for spectroscopy testing.
- Have hepatitis C or B, within 90 days prior to study entry.
- Have taken certain drugs within 30 days prior to study entry.
- Have a medical condition associated with chronic liver disease other than hepatitis C and B.
- Have consumed excessive amounts of alcohol in the past 12 months.
- Are pregnant or breast-feeding.
- Have a foreign object or metal in their body that would impair MRS testing.
- Have or have had peripheral vascular disease.
- Weigh 250 lbs or more.
- Have a family history of mitochondrial disease or have skeletal muscle disease, heart muscle disease, or nervous system conditions without a clearly defined cause that is not related to mitochondria.
Participants in Group 1 (HIV-uninfected) may not be eligible for this study if they:
- Have any active medical condition.
- Use any prescription drugs, except for vitamins or oral contraceptives.
Plan de estudios
¿Cómo está diseñado el estudio?
Colaboradores e Investigadores
Investigadores
- Silla de estudio: Grace McComsey
Fechas de registro del estudio
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
Palabras clave
Términos MeSH relevantes adicionales
- Infecciones por virus de ARN
- Enfermedades virales
- Infecciones
- Infecciones transmitidas por la sangre
- Enfermedades contagiosas
- Enfermedades De Transmisión Sexual Virales
- Enfermedades de transmisión sexual
- Infecciones por lentivirus
- Infecciones por retroviridae
- Síndromes de deficiencia inmunológica
- Enfermedades del sistema inmunológico
- Infecciones por VIH
Otros números de identificación del estudio
- ACTG A5144
- AACTG A5144
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