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  • Title: Bone mineral density changes within 11 months of renal transplantation in Iranian patients.
    Author: Bayat N, Einollahi B, Pourfarzian V, Alishiri G, Nemati E, Bagheri N, Miri SM, Elizeii PK.
    Journal: Transplant Proc; 2007 May; 39(4):1039-43. PubMed ID: 17524886.
    Abstract:
    BACKGROUND AND AIM: We studied bone mineral density (BMD) changes in Iranian patients with end-stage renal disease (ESRD) within 11 months after renal transplantation. METHODS: Among 68 ESRD candidates for renal transplantation, the BMD at the femur and the spine were assessed using a DEXA Norland scanner. Linear regression analysis was used to identify risk factors associated with low bone density. RESULTS: Mean BMD, T-score and Z-score of femur and spine were significantly reduced (at femur, 0.78 +/- 0.14, -2.4 +/- 1.1, -1.6 +/- 1.0; at spine, 142.25 +/- 105, -1.09 +/- 1.1, -1.07 +/- 0.9). Osteoporosis and osteopenia were found 55.2% and 36.2% at the femur and 8.6% and 58.6% at the spine, respectively. The BMD showed a significant negative association with age (r=0.615), female gender (r=0.394), and corticosteroid intake (r=0.286), and a positive association with weight (r=0.394) and body mass index (r=0.626). There was no significant association between BMD measurements and calcium, phosphorous, or parathyroid hormone levels. At 11 months follow-up, in 20 patients, the subject had lost a mean of 2.4% T-score and 2.8% Z-score at spine (P=.027 and .13, respectively), but did not experience significant declines at the femur. BMD showed a decrease in 80% of recipients in the spine area; there was a 15% BMD increase at the hip. CONCLUSION: Low bone density is common among ESRD Iranian patients. Early screening and treatment of this group is recommended. Significant loss in lumbar density occurred within 11 months of transplantation in more than one third of a prospective cohort of renal transplant recipients.
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