Bone quality in beta-thalassemia intermedia: relationships with bone quantity and endocrine and hematologic variables

Marina Baldini, A. Marcon, F. M. Ulivieri, S. Seghezzi, R. Cassin, C. Messina, M. D. Cappellini, G. Graziadei

Research output: Contribution to journalArticle

Abstract

We report the first evaluation of bone quality in 70 thalassemia intermedia (TI) patients (37 males, 33 females, age 41 ± 12 years). Thirty-three patients (47%) had been transfused, 34 (49%) had been splenectomized, 39 (56%) were on iron chelation therapy, and 11 (16%) were on hydroxyurea. Mean hemoglobin was 9.2 ± 1.5 g/dl, median ferritin 537 ng/dl (range 14–4893), and mean liver iron concentration 7.6 ± 6.4 mg Fe/g dw. Fifteen patients (21%) had endocrinopathies, and 29 (41%) had vitamin D deficiency. Bone quantity (bone mineral density, BMD) and bone quality (trabecular bone score, TBS) were evaluated by densitometry. In 53/70 patients (76%), osteopathy was found (osteoporosis in 26/53, osteopenia in 27/53). BMD values were higher in the never-transfused patients and in the not-chelated group. A highly significant correlation was found between splenectomy and BMD at all the sites, with lower values in the splenectomized patients. TBS values were significantly lower in TI patients than in 65 non-thalassemic controls (1.22 vs 1.36, p < 0.01), mainly in those splenectomized and in the transfused and chelated groups (p < 0.01). TBS did not correlate with liver iron concentration values. Our data disclose the major role of non-invasive bone quality evaluation in TI patients, especially those with the worst health state, to obtain a comprehensive assessment of fracture risk. Splenectomy seems to play a major part in bone complications.

Original languageEnglish
Pages (from-to)995-1003
Number of pages9
JournalAnnals of Hematology
Volume96
Issue number6
DOIs
Publication statusPublished - Jun 1 2017

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Keywords

  • Osteoporosis
  • Thalassemia
  • Trabecular bone score

ASJC Scopus subject areas

  • Hematology

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