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Arginine metabolism in myeloid cells in health and disease.
Semin Immunopathol
January 2025
Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse 74, 01307, Dresden, Germany.
Metabolic flexibility is key for the function of myeloid cells. Arginine metabolism is integral to the regulation of myeloid cell responses. Nitric oxide (NO) production from arginine is vital for the antimicrobial and pro-inflammatory responses.
View Article and Find Full Text PDFMAPK4 inhibits the early aberrant activation of B cells in rheumatoid arthritis by promoting the IRF4-SHIP1 signaling pathway.
Cell Death Dis
January 2025
Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi, China.
The involvement of B lymphocytes in the pathogenesis of rheumatoid arthritis (RA) is well-established, with their early and aberrant activation being a crucial factor. However, the mechanisms underlying this abnormal activation in RA remain incompletely understood. In this study, we identified a significant reduction in MAPK4 expression in both RA patients and collagen-induced arthritis (CIA) mouse models, which correlates with disrupted B cell activation.
View Article and Find Full Text PDFAlginate-polylysine-alginate (APA) microencapsulated transgenic human amniotic epithelial cells ameliorate fibrosis in hypertrophic scars.
Inflamm Res
January 2025
Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No.127 Changle West Road, Xincheng District, Xi'an, 710032, Shaanxi, China.
Background: Hypertrophic scar (HS) is a severe skin fibrosis. Transplanting stem cells carrying anti-fibrotic cytokine genes, like interferon-gamma (IFN-γ), is a novel therapeutic strategy. Human amniotic epithelial cells (hAECs) are ideal seed cells and gene vectors.
View Article and Find Full Text PDFCalcium-binding protein CALU-1 is essential for proper collagen formation in Caenorhabditis elegans.
Cell Mol Life Sci
January 2025
Department of Infection Biology, Wonkwang University School of Medicine, Iksan, 54538, Republic of Korea.
Collagen, a major component of the extracellular matrix, is crucial for the structural integrity of the Caenorhabditis elegans cuticle. While several proteins involved in collagen biosynthesis have been identified, the complete regulatory network remains unclear. This study investigates the role of CALU-1, an ER-resident calcium-binding protein, in cuticle collagen formation and maintenance.
View Article and Find Full Text PDFImpact of Vitamin D on Skin Aging, and Age-Related Dermatological Conditions.
Front Biosci (Landmark Ed)
January 2025
Cardiometabolic and Endocrine Institute, North Brunswick, NJ 08902, USA.
Human skin is a physical and biochemical barrier that protects the internal body from the external environment. Throughout a person's life, the skin undergoes both intrinsic and extrinsic aging, leading to microscopic and macroscopic changes in its morphology. In addition, the repair processes slow with aging, making the older population more susceptible to skin diseases.
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