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, Sandro Giannini, M.D. National Research Council, Center for Aging Studies of Padova, Padova, Italy Department of Medical and Surgical Sciences, University of Padova, Padova, Italy Search for other works by this author on: Oxford Academic Angela D'Angelo Division of Nephrology, University of Padova, Padova, Italy Department of Medical and Surgical Sciences, University of Padova, Padova, Italy Search for other works by this author on: Oxford Academic Martino Nobile Department of Medical and Surgical Sciences, University of Padova, Padova, Italy Search for other works by this author on: Oxford Academic Gianni Carraro Division of Nephrology, University of Padova, Padova, Italy Search for other works by this author on: Oxford Academic Paolo Rigotti Department of Medical and Surgical Sciences, University of Padova, Padova, Italy Search for other works by this author on: Oxford Academic Fatima Silva‐Netto Department of Medical and Surgical Sciences, University of Padova, Padova, Italy Search for other works by this author on: Oxford Academic Silvia Pavan Department of Medical and Surgical Sciences, University of Padova, Padova, Italy Search for other works by this author on: Oxford Academic Francesco Marchini Division of Nephrology, University of Padova, Padova, Italy Search for other works by this author on: Oxford Academic Martina Zaninotto Department of Laboratory Medicine, University of Padova, Padova, Italy Search for other works by this author on: Oxford Academic Luca Dalle Carbonare National Research Council, Center for Aging Studies of Padova, Padova, Italy Department of Medical and Surgical Sciences, University of Padova, Padova, Italy Search for other works by this author on: Oxford Academic
, Leonardo Sartori National Research Council, Center for Aging Studies of Padova, Padova, Italy Department of Medical and Surgical Sciences, University of Padova, Padova, Italy Search for other works by this author on: Oxford Academic Gaetano Crepaldi National Research Council, Center for Aging Studies of Padova, Padova, Italy Department of Medical and Surgical Sciences, University of Padova, Padova, Italy Search for other works by this author on: Oxford Academic
Journal of Bone and Mineral Research, Volume 17, Issue 10, 1 October 2002, Pages 1768–1773, https://doi.org/10.1359/jbmr.2002.17.10.1768
Published:
02 December 2009
Article history
Received:
21 December 2001
Revision received:
02 April 2002
Accepted:
26 April 2002
Published:
02 December 2009
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Sandro Giannini, Angela D'Angelo, Martino Nobile, Gianni Carraro, Paolo Rigotti, Fatima Silva‐Netto, Silvia Pavan, Francesco Marchini, Martina Zaninotto, Luca Dalle Carbonare, Leonardo Sartori, Gaetano Crepaldi, The Effects of Vitamin D Receptor Polymorphism on Secondary Hyperparathyroidism and Bone Density After Renal Transplantation, Journal of Bone and Mineral Research, Volume 17, Issue 10, 1 October 2002, Pages 1768–1773, https://doi.org/10.1359/jbmr.2002.17.10.1768
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Abstract
Immunosuppresive treatment and secondary hyperparathyroidism (SHPT) are considered among the most important pathogenetic factors for postrenal transplant bone disease. The aim of this study was to investigate the relationships among vitamin D receptor (VDR) gene polymorphism, parathyroid hormone (PTH) levels, and bone density in renal transplant recipients. We enrolled 69 patients (47 men and 22 women; mean age, 47 ± 11 years) who had undergone kidney transplantation 51 ± 5 months before. All patients underwent an evaluation of the main biochemical parameters of bone metabolism as well as bone densitometry. VDR alleles were typed by a polymerase chain reaction (PCR) assay based on a polymorphic BsmI restriction site. When the patients were categorized according to the VDR genotype (BB, Bb, and bb), serum creatinine, and the cumulative doses of immunosuppressive drugs were similar across the groups. PTH levels higher than 80 pg/ml were found in 53.6% of the patients, with the highest values being detected in the bb VDR genotype (p < 0.05). PTH was significantly correlated to urinary type I collagen cross‐linked N‐telopeptide (NTx) values. Bone density was low in the whole population; however, spinal bone density was lower in the bb subgroup (p < 0.02). In the whole population, only PTH (p < 0.05) and body mass index (BMI; p < 0.01) were independent predictors of spinal bone density. When grouping the patients by the VDR gene polymorphism, only PTH continued to be an independent predictor of spinal bone density in the bb allele subgroup (R2 adj. = 0.17). We can conclude that the VDR genotype polymorphism affects bone density of renal transplant recipients via its effects on the severity of SHPT.
bone density, bone turnover, renal transplantation, secondary hyperparathyroidism, vitamin D receptor
Copyright © 2002 ASBMR
This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model)
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