The fibroblast is a prominent cellular component of the periodontal ligament. It is believed to play an important role in collagen metabolism in health and disease. The turnover of collagen in the periodontal ligament is believed to be controlled by the balance between collagen synthesis and degradation. The family of matrix metalloproteinases and their inhibitors is one of the mechanisms which regulates this balance. The factors that regulate the synthesis of collagenase and its inhibitor, TIMP-1, by the periodontal ligament cell are poorly understood. The present study was undertaken to assess the effect of interleukin-1 beta (IL-1 beta), platelet-derived growth factor (PDGF), and transforming growth factor-beta 1 (TGF-beta) on the expression of collagenase (MMP-1) and TIMP-1 mRNA in periodontal derived fibroblasts using reverse transcription polymerase chain reaction (RT-PCR). Early passage periodontal ligament derived fibroblasts were treated with IL-1 beta (10 and 100 pg/ml), two isoforms of PDGF, -AA and -BB (4 and 20 ng/ml) and TGF-beta (1 and 10 ng/ml). Treatment with growth factors from 2 to 24 hours revealed that the largest effects on MMP-1 mRNA occurred after 24 hours. IL-1 beta induced a 5 to 9 fold increase in MMP-1 mRNA. The two isoforms of PDGF had less of an effect (3 to 5 fold) on MMP-1 mRNA whereas TGF-beta induced a 25 to 50% decrease in the expression of this message. None of the growth factors had an effect on TIMP-1 mRNA expression.(ABSTRACT TRUNCATED AT 250 WORDS)
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1902/jop.1995.66.7.552 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Chewing-Activated TRPV4/PIEZO1--Zn Axes in a Rat Periodontal Complex.
J Dent Res
January 2025
Department of Preventive and Restorative Dental Sciences, School of Dentistry, University of California, San Francisco, CA, USA.
The upstream mechanobiological pathways that regulate the downstream mineralization rates in periodontal tissues are limitedly understood. Herein, we spatially colocalized and correlated compression and tension strain profiles with the expressions of mechanosensory ion channels (MS-ion) TRPV4 and PIEZO1, biometal zinc, mitochondrial function marker (), cell senescence indicator (), and oxygen status marker hypoxia-inducible factor-1α () in rats fed hard and soft foods. The observed zinc and related cellular homeostasis in vivo were ascertained by TRPV4 and PIEZO1 agonists and antagonists on human periodontal ligament fibroblasts ex vivo.
View Article and Find Full Text PDFThe effect of low energy LED red light on osteogenetic differentiation of periodontal ligament stem cell via the ERK5 signal pathway.
Lasers Med Sci
January 2025
The Department of Preventive Dentistry, The Affiliated Stomatological Hospital, Southwest Medical University, Luzhou, 646000, China.
The purpose of this study was to examine how low-energy LED red light influences the early to middle stage of osteogenic differentiation of periodontal ligament stem cells (PDLSCs) via the ERK5 signaling pathway. METHODS: PDLSCs were extracted from periodontal membrane tissue using enzymatic digestion. At three time points of 7, 10, and 14 days after irradiation with 5J/cm LED red light, the expression levels of early to middle-stage osteogenic-related genes ALP, Col-1, BSP, and OPN were detected by real-time fluorescence quantitative PCR(qRT-PCR) in both control and osteogenesis experimental groups.
View Article and Find Full Text PDFInvestigation of the cushioning mechanism of a novel dental implant system with composite hydrogel.
J Dent Sci
January 2025
Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University and National University Hospital, Taipei, Taiwan.
Background/purpose: Dental implants can restore both function and aesthetics in edentulous areas. However, the absence of cushioning mechanical behavior in implants may limit their clinical performance and reduce the long-term survival rates. This study aimed to establish an implant cushion mechanism that mimicked the natural periodontal ligament, utilizing the properties of composite hydrogels.
View Article and Find Full Text PDFNucleotide-binding oligomerization domain-like receptor family caspase recruitment domain containing protein 5 affects the progression of periodontitis by regulating the function of periodontal membrane cells.
J Dent Sci
January 2025
Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China.
Background/purpose: Nucleotide-binding oligomerization domain-like receptor family caspase recruitment domain containing protein 5 (NLRC5) plays a regulatory role in innate and adaptive immunity. However, its role in periodontitis remains unclear. This study investigated the effects of NLRC5 on periodontitis and the underlying mechanism.
View Article and Find Full Text PDFmiR-508-5p suppresses osteogenic differentiation of human periodontal ligament stem cells via targeting sex-determining region Y-related HMG-box 11.
J Dent Sci
January 2025
Department of Periodontology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentisitry Minisrty of Health, Beijing, China.
Background/purpose: The local inflammatory microenvironment created by periodontitis negatively impacts periodontal tissue regeneration, necessitating the development of methods to enhance the regenerative capacity of stem cells. This study explored the regulatory role and underlying mechanism of miR-508-5p in the osteogenic differentiation of human periodontal ligament stem cells (hPDLSCs).
Materials And Methods: The regulatory roles of miR-508-5p in osteogenic differentiation of hPDLSCs were investigated through its inhibition or overexpression.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!