Clinical trial NCT02303158: Relationship Between Protein Biomarkers in Cerebrospinal Fluid and Alzheimer&Apos;s Disease in Patients With Depression
Official title: Study of the Relationship Between Protein Biomarkers in Cerebrospinal Fluid and the Risk of Progression to Alzheimer&Apos;s Disease in a Cohort of Patients With Depression
Study type: OBSERVATIONAL
Overall status: TERMINATED
Conditions: Alzheimer's Disease
Keywords: Alzheimer's Disease
Biomarkers
Depression
dementia
cerebrospinal fluid
neuropsychological
Lead sponsor: Institut Investigacio Sanitaria Pere Virgili
Sponsor class: OTHER
First posted: 2014-11-27
Enrollment: 50
Sex: ALL
Minimum age (years): 18
Maximum age (years): 60
Standard ages: ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: PROSPECTIVE
Sampling method: PROBABILITY_SAMPLE
Study population: Consecutive patients referred from Primary Care and Psychiatry, Neurology with consultations for specialist for cognitive impairment and / or depression who met the inclusion criteria of the study assessment.

Brief summary: It is currently accepted that depression during midlife is a risk factor for Alzheimer's disease (AD). Furthermore, several prospective population studies have demonstrated that depression is an independent risk factor for incident dementia of different types (e.g. vascular, mixed, Alzheimer's disease). However, it is not clear, what are the mechanisms that link depression and dementia, and if depression can be a prodromal manifestation of AD. There are also studies that suggest that depression could be an initial sign of AD.

Objective:

1. Demonstrate that late life depression (over 60 years of age) constitutes the first manifestation of AD.
2. Define by rating scales and life stressors have differential risk profiles evolutionary AD.
3. To study the relationship between the subtypes of depression and CSF biomarkers, neurophycological test and evolution to AD.

Detailed description: Groups of subjects: patients with recent apparition of late life depression without fulfilling the dementia criteria (Global Deterioration Scale, GDS, stages 1, 2 and 3). A longitudinal, prospective population study with two years follow-up. A cohort of will be included in the study. The patient's depression will be defined and categorized according to its severity (Yesavage Scale), whether it's endogenous or reactive (Holmes and Rahe scale) and taking into account the patient's medical history of depression.

There will be a prospective follow-up of conversion to dementia (starting from GDS Stage 4). It will be considered that dementia corresponds to AD if the biological markers of LCR present typical changes of AD at the moment of inclusion (Beta amyloid low and P-tau high).

It will be studied if there's any correlation between the clinically defined depression types and a high risk of progression to dementia and especially to AD.

Eligibility criteria: Inclusion Criteria:

* \>= 60 years.
* GDS (Reisberg Gobal Dementia Scale) of 2 to 3.
* Geriatric Depression Scale of Yesavage \>=12.
* History of previous depressive episodes resolved, but the emotional situation 15 months before inclusion, necessarily have to be normal.

Exclusion Criteria:

* Established dementia of any cause, or secondary degenerative dementia of any origin
* Primary diagnosis of cognitive impairment with psychiatric illness (schizophrenia , bipolar disorder, personality disorders ... )
* Dual diagnosis of chronic depression, dysthymia more than 15 months duration, or major depression with psychotic or atypical symptoms
* Neuroimaging with significant chronic vascular involvement
* To take drugs with known side effects on cognition and it is suspected that the neuropsychological deficits.
* Moderate or severe sensory deprivation or functional illiteracy in the neuropsychological study can not be performed
* Neoplastic diseasesContraindication to performing a lumbar puncture

Primary outcomes:
measure: Analysis of cerebrospinal fluid
timeFrame: between the second and the fifth day after inclusion visit
Secondary outcomes:
measure: Conversion to dementia
timeFrame: first measure at inclusion visit and second measure at final visit (after 24 months +- 5 days).
measure: Depression subtypes
timeFrame: at basal visit
Other outcomes:
Locations:
city: Tortosa
country: Spain
facility: Hospital de Tortosa, Verge de la Cinta
state: Tarragona
Study officials:
References:
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