Genetic hemochromatosis (GH) is an iron overload disorder mainly due to the C282Y mutation of the HFE gene. The possibility of bone involvement was only recently recognized. The aims of this study were to assess bone mineral density (BMD) and bone remodeling in men with GH, and to examine the influence of iron overload. Thirty-eight men (mean age 47.2+/-9.4 years) with well-defined HFE-related GH were studied. They had an important iron overload with liver iron concentration to age ratio >2.5, no previous venesection therapy and were C282Y homozygotes (n=37) or compound C282Y/H63D heterozygote (n=1). BMD measured by DXA was 0.925+/-0.15 g/cm2 at the lumbar spine (LS) and 0.778+/-0.13 g/cm2 at the femoral neck (FN). Osteopenia (T-score<-1 SD) was observed in 78.9% of patients and osteoporosis (T-score<-2.5 SD) in 34.2%. Vitamin D levels were normal, and no 1-84 parathyroid hormone dysfunction was found. Hypogonadism was found in only 13.2% of patients. Patients with hypogonadism had lower LS BMD than eugonadal patients (0.788+/-0.16 and 0.954+/-0.14 g/cm2). Bone remodeling and parathyroid hormone levels were lower in patients with cirrhosis, but BMD values were similar to those in patients without cirrhosis. FN BMD appeared to fall with rising hepatic iron concentrations (r=-0.399). We conclude that there is significant bone loss in HFE-related hemochromatosis that cannot solely be explained by hypogonadism or cirrhosis. Further investigations are needed to determine the role of iron overload itself.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1007/s00198-005-1934-0 | DOI Listing |
Mol Med
January 2025
Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain.
Background: Lysinuric protein intolerance is a rare autosomal disorder caused by mutations in the Slc7a7 gene that lead to impaired transport of neutral and basic amino acids. The gold standard treatment for lysinuric protein intolerance involves a low-protein diet and citrulline supplementation. While this approach partially improves cationic amino acid plasma levels and alleviates some symptoms, long-term treatment is suggested to be detrimental and may lead to life-threatening complications characterized by a wide range of hematological and immunological abnormalities.
View Article and Find Full Text PDFGene
January 2025
Department of Pathology and Key Laboratory for Xinjiang Endemic and Ethnic Diseases, Shihezi University School of Medicine/The First Affiliated Hospital, Shihezi University, Shihezi 832002 China; Department of Pathology, Central People's Hospital of Zhanjiang and Zhanjiang Central Hospital, Guangdong Medical University, Zhanjiang 524000 Guangdong, China. Electronic address:
Background: In-stent restenosis (ISR) is one of the most significant complications following percutaneous coronary intervention (PCI) in patients with coronary artery disease (CAD). Ferroptosis is a novel cell death mode characterized by iron overload and lipid peroxidation. However, the role of ferroptosis in vascular smooth muscle cells (VSMCs) regulating neointimal formation during restenosis remains unclear.
View Article and Find Full Text PDFAlzheimers Dement
January 2025
Department of Radiology, China-Japan Friendship Hospital, Beijing, China.
Introduction: The link between overload brain iron and transcriptional/cellular signatures in Alzheimer's disease (AD) remains inconclusive.
Methods: Iron deposition in 41 cortical and subcortical regions of 30 AD patients and 26 healthy controls (HCs) was measured using quantitative susceptibility mapping (QSM). The expression of 15,633 genes was estimated in the same regions using transcriptomic data from the Allen Human Brain Atlas (AHBA).
Eur J Haematol
January 2025
Hematology, St. Paul's Hospital and The University of British Columbia, Vancouver, British Columbia, Canada.
Introduction: Iron overload (IOL) accumulates in myelodysplastic syndromes (MDS) from expanded erythropoiesis and transfusions. Somatic mutations (SM) are frequent in MDS and stratify patient risk. MDS treatments reversing or limiting transfusion dependence are limited.
View Article and Find Full Text PDFCureus
December 2024
Internal Medicine, National Hospital of Sri Lanka, Colombo, LKA.
Hereditary hemochromatosis occurs due to genetic mutations, namely, cysteine-to-tyrosine substitution at amino acid 282 (C282Y) and histidine-to-aspartic acid substitution at 63 (H63D) mutations. The role of H63D mutation in hemochromatosis is less clear, and its penetrance is low even in homozygotes. Therefore, iron overload in H63D heterozygotes is extremely rare and scarcely reported.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!