25-hydroxyvitamin d deficiency in kidney transplant recipients.

03:46 EDT 24th October 2014 | BioPortfolio

Summary of "25-hydroxyvitamin d deficiency in kidney transplant recipients."

Introduction. After kidney transplantation, patients appear to have vitamin D deficiency due to the use of immunosuppressive treatment and prevention of sunlight. This study was designed to determine vitamin D serum levels in kidney transplant patients in comparison with healthy individuals. Materials and Methods. Forty-six kidney transplant patients with a creatinine clearance greater than 60 mL/min and 46 healthy individuals with normal kidney function were tested for serum levels of calcium, phosphorus, 25-hydroxyvitamin D, and parathyroid hormone at the end of the summer. Results. Thirty-one participants were men and 15 were women in each group. The mean age was 41.0 ± 14.2 years in kidney transplant recipients and 41.4 ±13.7 years in the control group. Inadequate serum 25-hydroxyvitamin D was seen in 93.5% of the transplant patients and in 89.1% of the controls. There was a 58.7% vitamin D insufficiency (20 ng/mL to 30 ng/mL) and a 34.8% deficiency (lower than 20 ng/mL) in the patients, and these rates were 58.7% and 26.0% in the control group, respectively. There was no significant difference between the two groups. Conclusions. Vitamin D deficiency is prevalent in kidney transplant patients. Lack of a significant difference between our two groups may be attributable to the high prevalence of vitamin D deficiency in general population and the use of vitamin D supplementation in transplant patients. Indeed, adequate doses of vitamin D in these patients are undetermined. They may need higher doses for normalization of serum vitamin D and metabolic requirements.

Affiliation

Department of Endocrinology, Imam Khomeini Hospital, Mazandaran University of Medical Sciences, Sari, Iran. zkashi@mazums.ac.ir.

Journal Details

This article was published in the following journal.

Name: Iranian journal of kidney diseases
ISSN: 1735-8582
Pages: 57-62

Links

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Medical and Biotech [MESH] Definitions

A mitochondrial cytochrome P450 enzyme that catalyzes the 1-alpha-hydroxylation of 25-hydroxyvitamin D3 (also known as 25-hydroxycholecalciferol) in the presence of molecular oxygen and NADPH-FERRIHEMOPROTEIN REDUCTASE. This enzyme, encoded by CYP27B1 gene, converts 25-hydroxyvitamin D3 to 1-alpha,25-dihydroxyvitamin D3 which is the active form of VITAMIN D in regulating bone growth and calcium metabolism. This enzyme is also active on plant 25-hydroxyvitamin D2 (ergocalciferol).

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Nephrology is a specialty of medicine and pediatrics that concerns itself with the study of normal kidney function, kidney problems, the treatment of kidney problems and renal replacement therapy (dialysis and kidney transplantation). Systemic conditions...

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