Low serum vitamin D is associated with higher cortical porosity in elderly men

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Low serum vitamin D is associated with higher cortical porosity in elderly men

Sundh, Daniel, 1985 (author): University of Gothenburg,Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för invärtesmedicin och klinisk nutrition,Centre for Bone and Arthritis Research,Institute of Medicine, Department of Internal Medicine and Clinical Nutrition,Univ Gothenburg, Sahlgrenska Acad, Dept Internal Med & Clin Nutr, Geriatr Med, Gothenburg, Sweden.;Univ Gothenburg, Sahlgrenska Acad, Ctr Bone & Arthrit Res, Inst Med, Gothenburg, Sweden.

Mellström, Dan, 1945 (author): University of Gothenburg,Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för invärtesmedicin och klinisk nutrition,Centre for Bone and Arthritis Research,Institute of Medicine, Department of Internal Medicine and Clinical Nutrition,Univ Gothenburg, Sahlgrenska Acad, Dept Internal Med & Clin Nutr, Geriatr Med, Gothenburg, Sweden.;Univ Gothenburg, Sahlgrenska Acad, Ctr Bone & Arthrit Res, Inst Med, Gothenburg, Sweden.

Ljunggren, Östen (author): Uppsala University,Uppsala universitet,Endokrinologi och mineralmetabolism

Karlsson, M. K. (author): Lund University,Lunds universitet,Ortopedi - klinisk och molekylär osteoporosforskning,Forskargrupper vid Lunds universitet,Orthopedics - Clinical and Molecular Osteoporosis Research,Lund University Research Groups,Skåne University Hospital

Ohlsson, Claes, 1965 (author): University of Gothenburg,Gothenburg University,Göteborgs universitet,Institutionen för medicin,Centre for Bone and Arthritis Research,Institute of Medicine,Univ Gothenburg, Sahlgrenska Acad, Ctr Bone & Arthrit Res, Inst Med, Gothenburg, Sweden.

Nilsson, Martin, 1966 (author): University of Gothenburg,Gothenburg University,Göteborgs universitet,Centre for Bone and Arthritis Research,Institutionen för medicin, avdelningen för invärtesmedicin och klinisk nutrition,Institute of Medicine, Department of Internal Medicine and Clinical Nutrition,Univ Gothenburg, Sahlgrenska Acad, Dept Internal Med & Clin Nutr, Geriatr Med, Gothenburg, Sweden.;Univ Gothenburg, Sahlgrenska Acad, Ctr Bone & Arthrit Res, Inst Med, Gothenburg, Sweden.

Nilsson, Anna G, 1968 (author): University of Gothenburg,Gothenburg University,Göteborgs universitet,Centre for Bone and Arthritis Research,Institutionen för medicin, avdelningen för invärtesmedicin och klinisk nutrition,Institute of Medicine, Department of Internal Medicine and Clinical Nutrition,Univ Gothenburg, Sahlgrenska Acad, Dept Internal Med & Clin Nutr, Geriatr Med, Gothenburg, Sweden.;Univ Gothenburg, Sahlgrenska Acad, Ctr Bone & Arthrit Res, Inst Med, Gothenburg, Sweden.

Lorentzon, Mattias, 1970 (author): University of Gothenburg,Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för invärtesmedicin och klinisk nutrition,Centre for Bone and Arthritis Research,Institute of Medicine, Department of Internal Medicine and Clinical Nutrition,Univ Gothenburg, Sahlgrenska Acad, Dept Internal Med & Clin Nutr, Geriatr Med, Gothenburg, Sweden.;Univ Gothenburg, Sahlgrenska Acad, Ctr Bone & Arthrit Res, Inst Med, Gothenburg, Sweden.

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2016-05-15
2016
English.
In: Journal of Internal Medicine. - : Wiley. - 0954-6820 .- 1365-2796. ; 280:5, s. 496-508

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Journal article (peer-reviewed)

Abstract Subject headings

BACKGROUND: Bone loss at peripheral sites in the elderly is mainly cortical and involves increased cortical porosity. However, an association between bone loss at these sites and 25-hydroxyvitamin D has not been reported. OBJECTIVE: To investigate the association between serum levels of 25-hydroxyvitamin D, bone microstructure and areal bone mineral density (BMD) in elderly men. METHODS: A population-based cohort of 444 elderly men (mean +/- SD age 80.2 +/- 3.5 years) was investigated. Bone microstructure was measured by high-resolution peripheral quantitative computed tomography, areal BMD by dual-energy X-ray absorptiometry and serum 25-hydroxyvitamin D and parathyroid hormone levels by immunoassay. RESULTS: Mean cortical porosity at the distal tibia was 14.7% higher (12.5 +/- 4.3% vs. 10.9 +/- 4.1%, P < 0.05) whilst cortical volumetric BMD, area, trabecular bone volume fraction and femoral neck areal BMD were lower in men in the lowest quartile of vitamin D levels compared to the highest. In men with vitamin D deficiency (<25 nmol L-1 ) or insufficiency [25-49 nmol L-1 , in combination with an elevated serum level of parathyroid hormone (>6.8 pmol L-1 )], cortical porosity was 17.2% higher than in vitamin D-sufficient men (P < 0.01). A linear regression model including age, weight, height, daily calcium intake, physical activity, smoking vitamin D supplementation and parathyroid hormone showed that 25-hydroxyvitamin D independently predicted cortical porosity (standardized beta = -0.110, R2 = 1.1%, P = 0.024), area (beta = 0.123, R2 = 1.4%, P = 0.007) and cortical volumetric BMD (beta = 0.125, R2 = 1.4%, P = 0.007) of the tibia as well as areal BMD of the femoral neck (beta = 0.102, R2 = 0.9%, P = 0.04). CONCLUSION: Serum vitamin D is associated with cortical porosity, area and density, indicating that bone fragility as a result of low vitamin D could be due to changes in cortical bone microstructure and geometry.

Subject headings

MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Endokrinologi och diabetes (hsv//swe)
MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Endocrinology and Diabetes (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin (hsv//swe)
MEDICAL AND HEALTH SCIENCES -- Clinical Medicine (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Ortopedi (hsv//swe)
MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Orthopaedics (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Näringslära (hsv//swe)
MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Nutrition and Dietetics (hsv//eng)

Keyword

cortical porosity
high-resolution peripheral computed tomography
vitamin D
cortical porosity

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