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Blood-brain Barrier Permeability in Alzheimer's Disease

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT01574456
First Posted: April 10, 2012
Last Update Posted: December 10, 2013
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
Maastricht University Medical Center
  Purpose
The main aim of the present study is to improve our understanding of the role of blood-brain barrier function in dementia of the Alzheimer's type. The investigators hypothesize that microvascular dysfunction - more specifically "cerebral perfusion and blood-brain barrier leakage" - is a determinant of cognitive decline and cortical atrophy in Alzheimer's disease.

Condition
Alzheimer's Disease

Study Type: Observational
Study Design: Observational Model: Case Control
Time Perspective: Prospective

Resource links provided by NLM:


Further study details as provided by Maastricht University Medical Center:

Primary Outcome Measures:
  • The main study measures are blood brain barrier permeability as measured by T1-weighted dynamic contrast MRI [ Time Frame: 22 months ]

Enrollment: 39
Study Start Date: March 2012
Study Completion Date: December 2013
Primary Completion Date: December 2013 (Final data collection date for primary outcome measure)
Groups/Cohorts
7 patients diagnosed with dementia of the Alzheimer's type
13 patients with mild cognitive impairment
19 healthy controls

  Eligibility

Information from the National Library of Medicine

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Ages Eligible for Study:   Child, Adult, Senior
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Three groups of participants have been included: 7 patients diagnosed with dementia of the Alzheimer's type; 13 patients with mild cognitive impairment due to AD, which represents a preclinical stage of AD in which patients already have memory impairment and at least one AD biomarker (i.e. hippocampal atrophy or abnormal amyloid and tau protein content in the cerebrospinal fluid); and 19 healthy controls. Patients have been recruited from the memory clinics of the Maastricht University Medical Center and the Leiden University Medical Center.
Criteria

Inclusion Criteria:

Patients with AD:

  • Informed consent before participation in the study
  • Received standard diagnostic procedure according to the Parelsnoer Initiative procedure
  • Diagnosed with dementia of the Alzheimer's type
  • Clinical dementia rating (CDR) of 1, which means a mild to moderate stage of dementia
  • MMSE ≥ 20 and patients are mentally competent (in general, individuals with an MMSE ≥ 18 are considered mentally competent)

Patients with prodromal AD:

  • Informed consent before participation in the study
  • Received standard diagnostic procedure according to the Parelsnoer Initiative procedure
  • Diagnosis of prodromal dementia according to the Dubois criteria (16)
  • CDR of 0.5, which suggests a very mild stage of dementia
  • Memory impairment defined as Delayed Recall on Verbal Learning Test (15 WLT) < 1.5 SD
  • MMSE ≥ 20 and patients are mentally competent.
  • Medial temporal lobe atrophy scale MTA ≥ 1 (17) OR abnormal levels of Aß42, t-tau or p-tau

Healthy participants:

  • Informed consent before participation in the study
  • No Diagnosis of dementia, prodromal dementia, or mild cognitive impairment.
  • MMSE ≥ 26
  • No substantial memory complaints (according to participant)
  • Age, gender and education is matched 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.
  • 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
  • Absence of reliable informant (for patient groups)
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01574456


Locations
Netherlands
Leids University Medical Center
Leiden, Netherlands, 2333 ZA
Maastricht University Hospital
Maastricht, Netherlands, 6229 ET
Sponsors and Collaborators
Maastricht University Medical Center
  More Information

Responsible Party: Maastricht University Medical Center
ClinicalTrials.gov Identifier: NCT01574456     History of Changes
Other Study ID Numbers: NL36156.068.11
First Submitted: April 5, 2012
First Posted: April 10, 2012
Last Update Posted: December 10, 2013
Last Verified: December 2013

Additional relevant MeSH terms:
Alzheimer Disease
Dementia
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Tauopathies
Neurodegenerative Diseases
Neurocognitive Disorders
Mental Disorders