Background: The aim of this study was to investigate the in vitro effect of the antirheumatic drug methotrexate (MTX) on biomechanically compressed human periodontal ligament fibroblasts (hPDLFs), focusing on the expression of interleukin 6 (IL-6), as its upregulation is relevant to orthodontic tooth movement.
Methods: Human PDLFs were subjected to pressure and simultaneously treated with MTX. Cell proliferation, viability and morphology were studied, as was the gene and protein expression of IL-6.
Results: Compared with that in untreated fibroblasts, IL-6 mRNA expression in mechanically compressed ligament fibroblasts was increased (two to sixfold; ****p < 0.0001). Under compression, hPDLFs exhibited a significantly more expanded shape with an increase of cell extensions. MTX with and without pressure did not affect IL-6 mRNA expression or the morphology of hPDLFs.
Conclusion: MTX has no effect on IL-6 expression in compressed ligament fibroblasts.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10936030 | PMC |
http://dx.doi.org/10.1186/s12903-024-04092-1 | DOI Listing |
Arch Oral Biol
January 2025
Department of Dentistry-Orthodontics and Craniofacial Biology, Research Institute for Medical Innovation, Radboud university medical center, Philips van Leydenlaan 25, Nijmegen 6525 EX, the Netherlands. Electronic address:
Objectives: To investigate in vivo whether myofibroblasts formed in the PDL after exposure to short-term high experimental orthodontic forces in rats survive. To study in vitro whether human PDL fibroblasts can differentiate into myofibroblasts and survive when chemical or mechanical stimuli are removed.
Design: Nine 6-week-old male Wistar rats were used in this experiment.
Int Immunopharmacol
January 2025
Department of Orthopaedics and Traumatology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, China; Jiangsu Province Hospital of Chinese Medicine, Nanjing 210029, China. Electronic address:
Background: Knee osteoarthritis (KOA) is a degenerative joint disease characterized by synovial inflammation and fibrosis. Gentiopicroside (GPS), one of the main active ingredients of Gentiana macrophylla, is widely used in anti-inflammatory and anti-fibrotic therapies. However, the exact mechanism by which GPS treats synovial inflammation and fibrosis in KOA remains unclear.
View Article and Find Full Text PDFMatrix Biol
January 2025
Department of Anatomy and Cell Biology, Dentistry, Schulich School of Medicine and Dentistry, Western University, London, Ontario, N6A 3K7, Canada; Dentistry, Schulich School of Medicine and Dentistry, Western University, London, Ontario, N6A 3K7, Canada. Electronic address:
Release of growth factors in the tissue microenvironment is a critical process in the repair and regeneration of periodontal tissues, regulating fibroblast behavior and phenotype. As a result of the complex architecture of the periodontium, distinct fibroblast populations in the periodontal ligament and gingival connective tissue exist in close proximity. Growth factor therapies for periodontal regeneration have gained traction, but quantification of their effects on multiple different fibroblast populations that are required for repair has been poorly investigated.
View Article and Find Full Text PDFBiomater Adv
December 2024
College of Biological Science and Engineering, Fuzhou University, No. 2 Xueyuan Road, Fuzhou 350108, China; Fujian Key Laboratory of Medical Instrument and Pharmaceutical Technology, Fuzhou University, No. 2 Xueyuan Road, Fuzhou 350108, China. Electronic address:
In anterior cruciate ligament (ACL) repair methods, the continuous enzymatic erosion of synovial fluid can impede healing and potentially lead to repair failure, as well as exacerbate articular cartilage wear, resulting in joint degeneration. Inspired by the blood clot during medial collateral ligament healing, we developed a composite scaffold comprising collagen (1 %, w/v) and polyvinyl alcohol (5 %, w/v) combined with platelet-rich plasma (PRP). The composite scaffold provides a protective barrier against synovial erosion for the ruptured ACL, while simultaneously facilitating tissue repair, thereby enhancing the efficacy of ACL repair techniques.
View Article and Find Full Text PDFInt Dent J
January 2025
Affiliated Stomatology Hospital of Kunming Medical University, Kunming, China; Yunnan Key Laboratory of Stomatology, Kunming, China. Electronic address:
Background: Periodontitis (PD) is a common chronic inflammatory oral disease that severely affects patients' quality of life. Fisetin has been shown to possess antioxidant and anti-inflammatory properties in various biological systems.
Methods: This study first identified the molecular targets of fisetin for PD through network pharmacology analysis.
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