The Prevalence of Vitamin D Deficiency in Patients With Alzheimer's Disease

NCT ID: NCT01420315

Last Updated: 2013-02-18

Basic Information

• Recruitment Status: COMPLETED
• Total Enrollment: 502 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2011-08-31
• Study Completion Date: 2012-08-31

Brief Summary

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.

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.

Conditions

Alzheimer's Disease

Study Design

• Observational Model Type: COHORT
• Study Time Perspective: CROSS_SECTIONAL

Eligibility Criteria

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

• Minimum Eligible Age: 50 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Saglik Bilimleri Universitesi Gulhane Tip Fakultesi

OTHER

Sponsor Role: lead

Responsible Party

Mehmet Ilkin Naharci

Assistant professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Ilkin M Naharci, specialist

Role: STUDY_DIRECTOR

Gulhane Medical Faculty Training Hospital, Department of Internal Medicine, Division of Geriatrics

Locations

Gulhane Medical School Training Hospital

Ankara, , Turkey (Türkiye)

Countries

Turkey (Türkiye)

Other Identifiers

G-123456789

Identifier Type: OTHER

Identifier Source: secondary_id

VDGT-01

Identifier Type: -

Identifier Source: org_study_id