The impact of pretransplant 25-hydroxy vitamin D deficiency on subsequent graft function: An observational study

Hyunwook Kim, Shin Wook Kang, Tae Hyun Yoo, Myoung Soo Kim, Soon Il Kim, Yu Seun Kim, Kyu Hun Choi

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13 Citations (Scopus)

Abstract

In addition to its canonical role in musculoskeletal health, several reports have demonstrated that serum vitamin D level may influence kidney function. However, the effect of pretransplant serum vitamin D level on subsequent graft function has not been explored. Therefore, this study was undertaken to examine the effect of serum vitamin D level at the time of kidney transplantation (KT) on subsequent graft function. Methods: We analyzed 106 patients who underwent KT and for whom 25-hydroxy vitamin D (25-OHD) levels were measured during hospitalization prior to transplantation. We measured estimated glomerular filtration rates (eGFR) using the Modification of Diet in Renal Disease (MDRD) formula at baseline and at six-month intervals up to 36 months after KT. Results: 38.7% of the patients were diagnosed with 25-OHD deficiency defined as less than 10 ng/mL. Recipient gender (female vs. male, odds ratio [OR] 3.30, 95% CI 1.33-8.21, P = 0.010), serum albumin level (per 1 mg/dl increase, OR 0.35, 95% CI 0.13-0.98, P = 0.047), and predominant renal replacement therapy modality before KT (P<0.001) were found to be independent pretransplant risk factors for 25-OHD deficiency by multivariate logistic regression analysis. Subsequent repeated measures analysis of covariance revealed that 25-OHD level had the only significant main effect on eGFR during the 36-month follow-up period [F (1, 88) = 12.07, P = 0.001]. Conclusions: Pretransplant 25-OHD deficiency was significantly associated with a lower post-transplant eGFR, suggesting that 25-OHD may play an important role in maintaining graft function after KT.

Original languageEnglish
Article number22
JournalBMC Nephrology
Volume13
Issue number1
DOIs
Publication statusPublished - 2012 Jun 19

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Vitamin D Deficiency
Kidney Transplantation
Observational Studies
Vitamin D
Transplants
Glomerular Filtration Rate
Serum
Odds Ratio
Diet Therapy
Kidney
Renal Replacement Therapy
Serum Albumin
Hospitalization
Transplantation
Logistic Models
Regression Analysis
Health

All Science Journal Classification (ASJC) codes

  • Nephrology

Cite this

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title = "The impact of pretransplant 25-hydroxy vitamin D deficiency on subsequent graft function: An observational study",
abstract = "In addition to its canonical role in musculoskeletal health, several reports have demonstrated that serum vitamin D level may influence kidney function. However, the effect of pretransplant serum vitamin D level on subsequent graft function has not been explored. Therefore, this study was undertaken to examine the effect of serum vitamin D level at the time of kidney transplantation (KT) on subsequent graft function. Methods: We analyzed 106 patients who underwent KT and for whom 25-hydroxy vitamin D (25-OHD) levels were measured during hospitalization prior to transplantation. We measured estimated glomerular filtration rates (eGFR) using the Modification of Diet in Renal Disease (MDRD) formula at baseline and at six-month intervals up to 36 months after KT. Results: 38.7{\%} of the patients were diagnosed with 25-OHD deficiency defined as less than 10 ng/mL. Recipient gender (female vs. male, odds ratio [OR] 3.30, 95{\%} CI 1.33-8.21, P = 0.010), serum albumin level (per 1 mg/dl increase, OR 0.35, 95{\%} CI 0.13-0.98, P = 0.047), and predominant renal replacement therapy modality before KT (P<0.001) were found to be independent pretransplant risk factors for 25-OHD deficiency by multivariate logistic regression analysis. Subsequent repeated measures analysis of covariance revealed that 25-OHD level had the only significant main effect on eGFR during the 36-month follow-up period [F (1, 88) = 12.07, P = 0.001]. Conclusions: Pretransplant 25-OHD deficiency was significantly associated with a lower post-transplant eGFR, suggesting that 25-OHD may play an important role in maintaining graft function after KT.",
author = "Hyunwook Kim and Kang, {Shin Wook} and Yoo, {Tae Hyun} and Kim, {Myoung Soo} and Kim, {Soon Il} and Kim, {Yu Seun} and Choi, {Kyu Hun}",
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The impact of pretransplant 25-hydroxy vitamin D deficiency on subsequent graft function : An observational study. / Kim, Hyunwook; Kang, Shin Wook; Yoo, Tae Hyun; Kim, Myoung Soo; Kim, Soon Il; Kim, Yu Seun; Choi, Kyu Hun.

In: BMC Nephrology, Vol. 13, No. 1, 22, 19.06.2012.

Research output: Contribution to journalArticle

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T1 - The impact of pretransplant 25-hydroxy vitamin D deficiency on subsequent graft function

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AU - Kim, Hyunwook

AU - Kang, Shin Wook

AU - Yoo, Tae Hyun

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AB - In addition to its canonical role in musculoskeletal health, several reports have demonstrated that serum vitamin D level may influence kidney function. However, the effect of pretransplant serum vitamin D level on subsequent graft function has not been explored. Therefore, this study was undertaken to examine the effect of serum vitamin D level at the time of kidney transplantation (KT) on subsequent graft function. Methods: We analyzed 106 patients who underwent KT and for whom 25-hydroxy vitamin D (25-OHD) levels were measured during hospitalization prior to transplantation. We measured estimated glomerular filtration rates (eGFR) using the Modification of Diet in Renal Disease (MDRD) formula at baseline and at six-month intervals up to 36 months after KT. Results: 38.7% of the patients were diagnosed with 25-OHD deficiency defined as less than 10 ng/mL. Recipient gender (female vs. male, odds ratio [OR] 3.30, 95% CI 1.33-8.21, P = 0.010), serum albumin level (per 1 mg/dl increase, OR 0.35, 95% CI 0.13-0.98, P = 0.047), and predominant renal replacement therapy modality before KT (P<0.001) were found to be independent pretransplant risk factors for 25-OHD deficiency by multivariate logistic regression analysis. Subsequent repeated measures analysis of covariance revealed that 25-OHD level had the only significant main effect on eGFR during the 36-month follow-up period [F (1, 88) = 12.07, P = 0.001]. Conclusions: Pretransplant 25-OHD deficiency was significantly associated with a lower post-transplant eGFR, suggesting that 25-OHD may play an important role in maintaining graft function after KT.

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