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- Essai clinique NCT02018913
Blood-brain Barrier Leakage in Dementia. A Dynamic Contrast-enhanced MRI Study
Alzheimer's disease (AD) and vascular dementia (VaD) are the most common forms of dementia. Yet, the cause of these diseases is still unknown. A potentially important initiating factor is a disrupted blood-brain barrier. This can initiate cerebral microangiopathy, which has frequently been associated with VaD. Nevertheless, also in most AD patients a substantial increase of vascular damage has been observed. The present study investigates the correlation between blood-brain-barrier breakdown and cognitive decline in AD and VaD. An innovative dynamic contrast-enhanced MRI scan that has recently been developed and tested at our institute, will be used to measure blood-brain barrier permeability.
Objective: We will investigate the relationship between this permeability measure and (i) cognitive performance and (ii) the status of MRI visible cerebrovascular pathology (i.e. white matter hyperintensities, lacunar infarctions, microbleeds) in the most common forms of dementia.
Aperçu de l'étude
Statut
Les conditions
Type d'étude
Inscription (Anticipé)
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria:
Patients:
- Informed consent before participation in the study
- Age of 55 and older
- Diagnosed with AD, VaD, mixed AD and VaD, mild cognitive impairment, vascular cognitive impairment and subjective cognitive impairment
- MMSE ≥ 20 and patients are mentally competent (in general, individuals with an MMSE ≥18 are considered mentally competent)
Healthy participants:
- Informed consent before participation in the study
- Age of 55 and older
- No Diagnosis of dementia, prodromal dementia, or mild cognitive impairment.
- MMSE ≥ 26
- No substantial memory complaints (according to participant)
- Average age, gender and education is similar to the patient groups.
Exclusion Criteria:
- Contraindications for scanning (e.g. brain surgery, cardiac pacemaker, metal implants, claustrophobia, large body tattoos)
- Contraindications for contrast agent Gadovist (renal failure) as determined by the estimated Glomular Filtration Rate eGFR < 30 mL/min; or known allergy to Gadovist. If participants have a low renal function as determined by <30 GFR <60, the PI will contact a radiologist (Paul Hofman). The radiologist will decide if this patient should be excluded.
- Major vascular disorders (e.g. stroke, heart disease)
- Psychiatric or neurological disorders: Major depression (< 12 months); history of schizophrenia; bipolar disorder; psychotic disorder NOS or treatment for a psychotic disorder (< 12 mnd); cognitive impairment due to alcohol abuse; epilepsy; Parkinson's disease; MS; brain surgery; brain trauma; electroshock therapy; kidney dialysis; Meniere's disease; and brain infections.
- Structural abnormalities of the brain
- Cognitive impairment due to alcohol/drug abuse or abuse of other substances.
- Absence of reliable informant (for patient groups)
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Délai |
---|---|
Blood brain barrier permeability as measured by T1-weighted dynamic contrast MRI
Délai: Up to 4 years: April 2014-April 2018
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Up to 4 years: April 2014-April 2018
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Collaborateurs et enquêteurs
Parrainer
Collaborateurs
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Achèvement primaire (Anticipé)
Achèvement de l'étude (Anticipé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Estimation)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Estimation)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
- Les troubles mentaux
- Maladies cardiovasculaires
- Maladies vasculaires
- Troubles cérébrovasculaires
- Maladies du cerveau
- Maladies du système nerveux central
- Maladies du système nerveux
- Artériosclérose
- Maladies artérielles occlusives
- Troubles neurocognitifs
- Maladies neurodégénératives
- Tauopathies
- Maladies artérielles intracrâniennes
- Artériosclérose intracrânienne
- Leucoencéphalopathies
- Démence
- Maladie d'Alzheimer
- Démence vasculaire
Autres numéros d'identification d'étude
- NL46089.068.13
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