title: Low bone mineral density and nutritional vitamin D deficiency in pediatric renal transplant recipients: Assessment of risk factors and response to oral vitamin D therapy.
abstract: VitD deficiency and bone disease are common after Tx. Prevalence and risk factors for low VitD and BMD and response to VitD therapy were investigated in pediatric renal Tx recipients. 25-hydroxy VitD levels of 71 Tx were compared to 54 healthy AA children. DXA of 44 Tx were compared to 47 AA controls. Of Tx, 59% were AA. Majority (59.1%) of Tx were VitD deficient (23.9%) or insufficient (35.2%). Prevalence of low VitD levels was double in AA (73.9%) vs. non-AA Tx (37.7%), (p = 0.003). Low VitD among Tx was associated with AA ethnicity (p < 0.01), winter (p < 0.05), older age (p < 0.05), males (p < 0.05) and time <6 months post Tx (p < 0.05). Tx with low VitD were treated with oral ergocalciferol or cholecalciferol (23 each); 13% treated with ergocalciferol vs. 82.6% treated with cholecalciferol achieved repletion (p < 0.0001). Of 36 Tx with whole body DXA, 19.5% had BMD (z < -1) after height adjustment. AA Tx had 3.4-fold higher risk of low BMD vs. controls (p < 0.05). Low VitD and BMD are prevalent in children after renal Tx. Better repletion of VitD is achieved with cholecalciferol.
authors: Department of Nephrology, Children's National Medical Center Emergency Medicine, Children's National Medical Center, Washington, DC 20010, USA.
authors: Kristen
authors: K
authors: Sgambat
authors: Shamir
authors: S
authors: Tuchman
authors: Leticia
authors: L
authors: Ryan
authors: Rachel
authors: R
authors: Wood
authors: Asha
authors: A
authors: Moudgil
mesh_terms: D015502:Absorptiometry, Photon; D000284:Administration, Oral; D000293:Adolescent; D001741:Black or African American; D015519:Bone Density; D050071:Bone Density Conservation Agents / Q000008:administration & dosage*; D002648:Child; D002675:Child, Preschool; D002762:Cholecalciferol / Q000008:administration & dosage; D004872:Ergocalciferols / Q000008:administration & dosage; D005260:Female; D006801:Humans; D007223:Infant; D007676:Kidney Failure, Chronic / Q000150:complications / Q000601:surgery; D016030:Kidney Transplantation / Q000009:adverse effects* / Q000208:ethnology; D008297:Male; D012307:Risk Factors; D014807:Vitamin D / Q000008:administration & dosage*; D014808:Vitamin D Deficiency / Q000209:etiology* / Q000628:therapy; D055815:Young Adult
chemical_list: D050071:Bone Density Conservation Agents; D004872:Ergocalciferols; D014807:Vitamin D; D002762:Cholecalciferol