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Intervención con tiamina e injerto de derivación de arteria coronaria (B1&CABG)

5 de noviembre de 2026 actualizado por: Rajesh Kumar, PhD, University of California, Los Angeles

Intervención con tiamina y cognición en adultos mayores sometidos a injerto de derivación de arteria coronaria: ensayo clínico aleatorizado.

The purpose of this study is to gain a better understanding of the association between brain changes and cognitive deficits in coronary heart disease (CHD) patients undergoing coronary artery bypass grafting (CABG) and whether a low-cost thiamine intervention can be used to reduce post-CABG cognitive issues in CHD subjects.

Descripción general del estudio

Estado

Reclutamiento

Intervención / Tratamiento

Descripción detallada

Using a two-group, double-blind randomized, longitudinal study design, 52 coronary heart disease (CHD) patients undergoing coronary artery bypass grafting (CABG) (ages 60-80 years; 26 thiamine treatment and 26 placebo) will participate in cognitive assessment and evaluation of blood thiamine, lactate, and inflammatory marker levels. The investigators propose that thiamine infusion will help in reducing lactate and inflammatory marker levels, as observed in other conditions. The findings from this study might serve as a novel and innovative treatment strategy for protection against declining cognition, and hence better outcomes, and improved quality of life and daily activities. This clinical trial study will provide required data regarding the benefits of a low-cost thiamine intervention that could be implemented on a large-scale clinical trial to reduce post-CABG cognitive deficits in older CHD, and thus, decrease early dementia, improve social function, increase quality of life and daily activities, and reduce healthcare costs in this serious older CHD patient population.

Tipo de estudio

Intervencionista

Inscripción (Estimado)

52

Fase

  • Fase temprana 1

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Estudio Contacto

Copia de seguridad de contactos de estudio

Ubicaciones de estudio

    • California
      • Los Angeles, California, Estados Unidos, 90095
        • Reclutamiento
        • UCLA
        • Contacto:
        • Investigador principal:
          • Rajesh Kumar, PHD
        • Contacto:

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

60 años a 80 años (Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Todos

Descripción

Inclusion Criteria:

  • Patients with Coronary Heart Disease (CHD) scheduled for Bypass Grafting (CABG)
  • Thiamine deficiency before CABG
  • European System for Cardiac Operative Risk Evaluation II (EuroSCORE II) >1.5%
  • Off-pump surgery

Exclusion Criteria:

  • Dementia at baseline [Montreal Cognitive Assessment (MoCA) <21 within 5 days before CABG]
  • Current in-take of thiamine
  • Known thiamine allergy
  • Uncontrolled blood glucose levels
  • Unable to give consent due to illness
  • History of hyperlactatemia
  • Recent (within several years and/or up to the judgment of the PI/co-PIs) cerebral incidents (seizure or head trauma resulting in loss of consciousness and/or concussion)
  • Stroke
  • Diagnosed psychiatric diseases (clinical depression, schizophrenia, manic-depression)
  • Patients with history of alcohol or substance abuse
  • Acute or chronic infections (tuberculosis, hepatitis, or encephalopathy)
  • Diagnosed neuro-degenerative diseases (Alzheimer's or Parkinson's disease)
  • Chronic immunodeficiency (including HIV)
  • Congenital brain deficits will also be excluded

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Tratamiento
  • Asignación: Aleatorizado
  • Modelo Intervencionista: Asignación paralela
  • Enmascaramiento: Único

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: Post-CABG patients with Thiamine Treatment Intervention.

Assess cognition and evaluate blood thiamine, lactate, and inflammatory marker levels in patients receiving thiamine intervention treatment within 5 days (baseline) and one month after CABG.

Participants will be given an infusion of thiamine.

Otros nombres:
  • Vitamina B1
Comparador de placebos: Post-CABG patients without Thiamine Treatment Intervention.

Assess cognition and evaluate blood thiamine, lactate, and inflammatory marker levels in patients receiving placebo treatment within 5 days (baseline) and one month after CABG.

Participants will be given an infusion of the placebo treatment.

Otros nombres:
  • inactivo

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Effects of thiamine treatment intervention on blood lactate levels.
Periodo de tiempo: Baseline and after 1 month after CABG.

Assess thiamine treatment effect on blood lactate levels in CABG patients with and without intervention measured via blood gas analyzer (ABL90 flex plus, Radiometer).

Baseline and after 1 month after CABG.
Effects of thiamine treatment intervention on blood thiamine levels.
Periodo de tiempo: Baseline and after 1 month after CABG.

Assess thiamine treatment effect on blood thiamine levels in CABG patients with and without intervention measured via blood gas analyzer (ABL90 flex plus, Radiometer).

Baseline and after 1 month after CABG.
Effects of thiamine treatment intervention on blood inflammatory levels.
Periodo de tiempo: Baseline and after 1 month after CABG.

Assess thiamine treatment effect on blood inflammatory levels in CABG patients with and without intervention measured via a custom kit, including cytokines from the human 38-plex magnetic cytokine/chemokine kit, will be used per manufacturer's instructions.

Baseline and after 1 month after CABG.
Evaluate cognitive function in CABG patients with thiamine treatment.
Periodo de tiempo: Baseline and after 1 month after CABG.

The investigators will evaluate cognitive function using the NIH Toolbox Cognition Battery (executive function, attention, and speed). CABG patients with thiamine treatment will show a change in cognition over CABG patients without thiamine treatment.

Baseline and after 1 month after CABG.
Evaluate long term effects of thiamine treatment intervention on cognitive function in CABG patients with thiamine treatment.
Periodo de tiempo: 6 months after CABG.

The investigators will evaluate cognitive function using the NIH Toolbox Cognition Battery (executive function, attention, and speed). CABG patients with thiamine treatment will show a change in cognition over CABG patients without thiamine treatment.

6 months after CABG.
Examine cognition in CABG patients with thiamine treatment.
Periodo de tiempo: Baseline and 1 month after CABG.

The investigators will examine cognition using the Wide Range Assessment of Memory and Learning 2 (WRAML2). CABG patients with thiamine treatment will show a change in cognition over CABG patients without thiamine treatment.

Baseline and 1 month after CABG.
Examine long term effects of thiamine treatment intervention on cognition in CABG patients with thiamine treatment.
Periodo de tiempo: 6 months after CABG.

The investigators will examine cognition using the Wide Range Assessment of Memory and Learning 2 (WRAML2). CABG patients with thiamine treatment will show a change in cognition over CABG patients without thiamine treatment.

6 months after CABG.
Cognition assessment in CABG patients after thiamine treatment.
Periodo de tiempo: Baseline and 1 month after CABG.

The investigators will assess cognition using the Montreal Cognitive Assessment (MoCA). CABG patients with thiamine treatment will show a change in cognition over CABG patients without thiamine treatment. The MoCA is a brief cognitive assessment administered to the participant by the investigator. The score ranges from 0 to 30, with higher scores indicating better cognitive function.

Baseline and 1 month after CABG.
Assessment of long term effects of thiamine treatment intervention on cognition in CABG patients after thiamine treatment.
Periodo de tiempo: 6 months after CABG.

The investigators will assess cognition using the Montreal Cognitive Assessment (MoCA). CABG patients with thiamine treatment will show a change in cognition over CABG patients without thiamine treatment. The MoCA is a brief cognitive assessment administered to the participant by the investigator. The score ranges from 0 to 30, with higher scores indicating better cognitive function.

6 months after CABG.
Long term effect of thiamine treatment intervention on quality of life.
Periodo de tiempo: 6 months after CABG.

Examine the long-term quality of life in older CHD subjects with and without thiamine intervention treatment as measured by NIH validated Short-Form 36 (SF-36) survey. The SF-36 is a 36 question form filled out by the participant and scored by the investigator. The score ranges from 0 to 100, with higher scores indicating better health status.

6 months after CABG.
Long term effect of thiamine treatment intervention on daily activities using PASE.
Periodo de tiempo: 6 months after CABG.

Examine the long-term daily activities status in older CHD subjects with and without thiamine intervention treatment as measured by NIH validated Physical Activity Scale for the Elderly (PASE). PASE is a brief self-administered questionnaire measuring physical activity which generates a score, ranging from 0 to 793, with higher scores indicating greater physical activity.

6 months after CABG.
Long term effect of thiamine treatment intervention on daily activities using PPA.
Periodo de tiempo: 6 months after CABG.

Examine the long-term daily activities status in older CHD subjects with and without thiamine intervention treatment as measured by Paffenbarger Physical Activity (PPA).

6 months after CABG.

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Investigadores

  • Investigador principal: Rajesh Kumar, PhD, University of California, Los Angeles

Publicaciones y enlaces útiles

La persona responsable de ingresar información sobre el estudio proporciona voluntariamente estas publicaciones. Estos pueden ser sobre cualquier cosa relacionada con el estudio.

Publicaciones Generales

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Actual)

10 de octubre de 2024

Finalización primaria (Estimado)

30 de septiembre de 2027

Finalización del estudio (Estimado)

30 de septiembre de 2027

Fechas de registro del estudio

Enviado por primera vez

7 de marzo de 2024

Primero enviado que cumplió con los criterios de control de calidad

20 de marzo de 2024

Publicado por primera vez (Actual)

25 de marzo de 2024

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

6 de noviembre de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

5 de noviembre de 2026

Última verificación

1 de julio de 2026

Más información

Términos relacionados con este estudio

Palabras clave

Otros números de identificación del estudio

  • 23-001185
  • R21AG081720-01A1 (Subvención/contrato del NIH de EE. UU.)

Plan de datos de participantes individuales (IPD)

¿Planea compartir datos de participantes individuales (IPD)?

SÍ

Descripción del plan IPD

The investigators will make every effort to publish data in a timely manner. Once the findings related to changes in blood lactate, thiamine, and inflammatory levels based on blood pathology and cognition assessment data before and after thiamine intervention on CHD subjects before and after CABG have been published or by the end of award performance period, whichever is sooner, the blood levels, cognitive data, demographics, mood, and clinical data (devoid of individual identifiers) will be deposited in NIH supported domain-specific data sharing repository (NIMH Data Archive). All data will be labeled with consistent unique identifiers that will make it easily findable in data repository to interested research investigators. Data will be available forever after sharing with data repository to other investigators for secondary analyses.

Marco de tiempo para compartir IPD

Once the findings have been published or by the end of award performance period, whichever is sooner.

Criterios de acceso compartido de IPD

Any research investigator

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

Sí

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

No

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. .

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