The Prevalence of Vitamin D Deficiency in Patients With Alzheimer's Disease (DEVIT-ALZ)

February 15, 2013 updated by: Mehmet Ilkin Naharci, Saglik Bilimleri Universitesi Gulhane Tip Fakultesi

The Prevalence of Vitamin D Deficiency in Patients With Alzheimer's Disease: a Crosssectional Multicenter Study in Turkey

Recent studies indicate that there is a relationship between cognitive decline and vitamin D deficiency. Up to now, no study has investigated the prevalence of vitamin d deficiency in patient with Alzheimer's disease. Our aim is to investigate the prevalence of vitamin D deficiency and analysis the associated characteristics in patients with Alzheimer's disease.

Study Overview

Status

Completed

Conditions

Detailed Description

Vitamin D has many physiological functions via skeletal and extra-skeletal effects. Nowadays, it is well known that vitamin d deficiency causes to an increase in disease burden. As the role of vitamin D, the maintenance of balance, the improvement of muscle power, and the augmentation of innate immunity were proven. Some recent studies showed that vitamin D deficiency associates with cardiovascular diseases, autoimmune diseases, and the risk of cancer.

Vitamin D carries out your functions by vitamin d receptors (VDR) located in many cells. Brain neurons and glial cells are including VDR's. It is presumed that the functions of vitamin d in neurons are the regulation of neurotransmission, neuron protection, and immunomodulation. Also,vitamin D has a role in brain development and maturation. Except the functions in central nerve system, vitamin D has effects on peripheral nerve system. It was reported that nerve transduction velocity decreased in vitamin d deficiency.

Vitamin D deficiency and Alzheimer's disease are major public health problems that their incidences increase in advanced ages.Recent studies indicate that there is a relationship between cognitive decline and vitamin D deficiency. VDR receptors in brain specially in hippocampus, hypothalamus, limbic system, subcortical and spinal motor areas were determined.

Up to now, no study has investigated the prevalence of vitamin d deficiency in patient with Alzheimer's disease. Our aim is to investigate the prevalence of vitamin D deficiency and analysis the associated characteristics in patients with Alzheimer's disease.

Study Type

Observational

Enrollment (Actual)

502

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Turkey
      • Ankara, Turkey, 06018
        • Gulhane Medical School Training Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

50 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

The patients with Alzheimer's dementia will be included in the study.

Description

Inclusion Criteria:

  • The patient must have Alzheimer's dementia and their diagnosis must be made according to National Institute of Neurological and Communicative Disorders and Stroke and the Alzheimer Disease and Related Disorders Association (NINCDS/ADRDA) and DSM-IV criteria
  • The informed consent form must be given by patients and/or their representatives

Exclusion Criteria:

  • if the causes of dementia (lewy body dementia, vascular dementia, pick disease, frontotemporal dementia...) is out of Alzheimer's dementia,
  • having chronic liver disease and/or end-stage renal disease
  • if the informed consent form is being withdrawn

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
serum 25(OH)D levels
Time Frame: January, 1, 2013
January, 1, 2013

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Saglik Bilimleri Universitesi Gulhane Tip Fakultesi

Investigators

  • Study Director: Ilkin M Naharci, specialist, Gulhane Medical Faculty Training Hospital, Department of Internal Medicine, Division of Geriatrics

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

August 1, 2011

Primary Completion (Actual)

August 1, 2012

Study Completion (Actual)

August 1, 2012

Study Registration Dates

First Submitted

August 18, 2011

First Submitted That Met QC Criteria

August 18, 2011

First Posted (Estimate)

August 19, 2011

Study Record Updates

Last Update Posted (Estimate)

February 18, 2013

Last Update Submitted That Met QC Criteria

February 15, 2013

Last Verified

February 1, 2013

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • VDGT-01
  • G-123456789 (Other Identifier: Gulhane Medical Training School)

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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