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  • Title: Evidence of continuing bone recovery at a mean of 7 years after liver transplantation.
    Author: Feller RB, McDonald JA, Sherbon KJ, McCaughan GW.
    Journal: Liver Transpl Surg; 1999 Sep; 5(5):407-13. PubMed ID: 10477842.
    Abstract:
    Patients with end-stage liver disease have low bone-turnover osteoporosis, and there is often further bone loss of 20% to 30% after orthotopic liver transplantation (OLT). Bone recovery after OLT has been reported, but data are limited. We undertook studies to determine whether bone recovery continues in the long term. Twenty-eight adult patients alive at least 5 years after OLT were studied (14 men, 14 women). Bone mineral density (BMD), serum parathyroid hormone (PTH), osteocalcin, and vitamin D levels were measured pretransplantation, at 3 months, 12 months, a mean of 46 months, and a mean of 85 months (range, 63 to 117 months) after transplantation. When BMD is expressed as a z score, the results were as follows: x0.82 +/- 0.22 pre-OLT; -2.04 +/- 0.27 at 3 months; -1.68 +/- 0.24 at 12 months; -1.23 +/- 0.24 at a mean of 46 months; and -1.0 +/- 0.26 at a mean of 85 months after OLT. The results at 46 and 85 months were significantly greater than the measurement at 3 months after OLT (P <.05). Furthermore, mean BMD (expressed as a z score) returns to the pre-OLT level at a mean of 85 months. At final follow-up, 9 of 28 patients had elevated PTH levels, and 14 of 27 patients had elevated osteocalcin levels. Five patients had spontaneous fractures in the first 12 months after transplantation, and 5 more patients had fractures by final follow-up. Even at 7 years after OLT, there was a significant increase in BMD (expressed as a z score) compared with 3 months after transplantation. Elevation of serum PTH and osteocalcin levels in some patients suggests continuing bone remodeling.
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