Objective: The aim of the study was to evaluate the effect of allogeneic hematopoietic stem cell transplantation (HSCT) on bone mineral density (BMD), serum vitamin D levels, and nutritional status of 50 patients between ages 4 and 20 y.
Methods: We conducted pre-HSCT and 6-mo post-HSCT evaluations. We measured BMD at the lumbar spine (LS) and total body (TB) by dual energy x-ray absorptiometry (DXA); body composition by bioimpedance analysis, and dietary intakes of calcium and vitamin D using the 24-h recall and semiquantitative food frequency questionnaire methods.
Results: We observed a significant reduction in BMD 6 mo post-HSCT. Nearly half (48%) of patients had reductions at the LS (average -9.6% ± 6.0%), and patients who developed graft-versus-host disease (GVHD) had the greatest reductions (-5.6% versus 1.2%, P < 0.01). We also found reductions in serum levels of 25-hydroxyvitamin D (25-OHD), from 25.6 ± 10.9 ng/dL to 20.4 ± 11.4 ng/dL (P < 0.05), and in body weight. Corticosteroid treatment duration, severity of chronic GVHD, serum 25-OHD levels, and family history of osteoporosis were all risk factors associated with variations in BMD at the LS.
Conclusion: HSCT in children and adolescents negatively effects their BMD, nutritional status, and vitamin D levels. We suggest that early routine assessment be done to permit prevention and treatment.
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http://dx.doi.org/10.1016/j.nut.2013.10.014 | DOI Listing |
Sao Paulo Med J
January 2025
Associate Professor, Department of Nephrology, Ankara Bilkent City Hospital, Ankara, Turkey.
Background: Insulin resistance often occurs in patients with chronic kidney disease (CKD) owing to mineral and bone metabolism disorders. Fibroblast growth factor (FGF)-23 and soluble klotho (s-KL) play crucial roles in linking CKD with mineral and bone metabolism.
Objective: This study aimed to examine the relationship between insulin resistance and FGF-23 and s-KL in patients with non-diabetic pre-dialysis patients with CKD.
JBMR Plus
February 2025
Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto 14040-901, Brazil.
Mineralizing cells release a special class of extracellular vesicles known as matrix vesicles (MV), crucial for bone mineralization. Following their release, MV anchor to the extracellular matrix (ECM), where their highly specialized enzymatic machinery facilitates the formation of seed mineral within the MV's lumen, subsequently releasing it onto the ECM. However, how MV propagate mineral onto the collagenous ECM remains unclear.
View Article and Find Full Text PDFJ Orthop Translat
January 2025
Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, People's Republic of China.
Background: RANKL and SCLEROSTIN antibodies have provided a strong effective choice for treating osteoporosis in the past years, which suggested novel molecular target identification and therapeutic strategies development are important for the treatment of osteoporosis. The therapeutic effect of verapamil, a drug previously used for cardiovascular diseases, on diabetes was due to the inhibition of TXNIP expression, which has also been reported as a target in mice osteoporosis. Whether verapamil-inhibited TXNIP expression is related to osteoporosis and how it works on the molecular level is worthy to be explored.
View Article and Find Full Text PDFJ Med Biochem
November 2024
Maternal and Child Health Hospital of Hubei Province, Department of Child Health, Wuhan, Hubei Province, China.
Background: Aim was to demonstrate the influencing factors of infant bone mineral density (BMD) and its correlation with serum 25-hydroxyvitamin D (25-(OH)D) in nursing mothers.
Methods: 200 children aged 0 č 1 years were rolled into normal group (n=120) and abnormal group (n=80) regarding the results of ultrasound BMD examination. The sunshine duration of infants with different BMD and 25(OH)D, calcium and phosphorus levels of nursing mothers were analyzed, and univariate and multivariate analyses of BMD were implemented.
Arch Osteoporos
January 2025
Department of Dietetics and Nutrition, Robert Stempel College of Public Health & Social Work, Florida International University, 11200 SW 8th Street AHC5, Miami, FL, 33199, USA.
Unlabelled: Dietary acid load could be associated with bone mass, but there are limited and conflicting results. This secondary cross-sectional analysis evaluated these associations among 123 children/adolescents, mostly Hispanics. Dietary acid load seems to be associated with bone mass in boys, but these results should be confirmed through long-term studies.
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