Linked Life Data

9855465

Source:http://linkedlifedata.com/resource/pubmed/id/9855465

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1999-2-12
pubmed:abstractText
Patients with Alzheimer's disease (AD) are at increased risk for falls and hip fractures. To better understand causes and prevention, we measured bone mineral density (BMD) in the second metacarpals of 46 ambulatory elderly women with AD and analyzed its relation to serum biochemical indices, sunlight exposure, and vitamin D intake. BMD was significantly less than in age-matched controls. In 26% of AD patients, the serum 25-hydroxyvitamin D (25-OHD) concentration was at a deficient level (5-10 ng/mL), and in 54% it was at an osteomalacic level (<5 ng/mL). Concentrations of ionized calcium were significantly lower in patients. Conversely, concentrations of serum bone Gla-protein and urinary hydroxyproline in patients were significantly higher than in controls. BMD correlated positively with 25-OHD concentration (p = 0.0041) and negatively with parathyroid hormone (PTH) concentration (p = 0.0022). PTH was higher in patients than in controls, and correlated negatively with 25-OHD (p < 0.0001). Many AD patients were sunlight-deprived and consumed less than 100 IU of vitamin D per day. We concluded that vitamin D deficiency due to sunlight deprivation and malnutrition, together with compensatory hyperparathyroidism, contributes significantly to reduced BMD in AD patients. Low BMD increases risk of hip fractures in patients with AD, but may be improved by vitamin D supplementation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
8756-3282
pubmed:author
pubmed:issnType
Print
pubmed:volume
23
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
555-7
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
High prevalence of vitamin D deficiency and reduced bone mass in elderly women with Alzheimer's disease.
pubmed:affiliation
Department of Neurology, Futase Social Insurance Hospital, Iizuka, Japan. y-sato@ktarn.or.jp
pubmed:publicationType
Journal Article