Objectives: To investigate the effects of IL-17 on IL-6, IL-1β, and matrix metalloproteinase (MMP-1) production, and to compare the MMP-1 production between the individual and combined effects of IL-1β and IL-6 in human periodontal ligament fibroblasts (HPDLF).
Materials And Methods: Human periodontal ligament fibroblasts were cultured with IL-17 for 0.5, 1, 4, 24, 48, and 72 h, and were cultured with IL-1β, IL-6/sIL-6R, or a combination of IL-1β and IL-6/sIL-6R for 24 h. To measure the mRNA levels of IL-6, IL-1β, and MMP-1, total RNA was extracted from the cultured HPDLF, and a real-time PCR analysis was performed. The protein levels of IL-6, IL-1β, and MMP-1 in supernatants were measured using enzyme-linked immunosorbent assays (ELISAs).
Results: IL-17 significantly increased the expression of IL-6 and MMP-1 mRNA and protein, while IL-17 transiently increased the expression of IL-1β mRNA. The combination of IL-1β and IL-6/sIL-6R induced significantly higher levels of MMP-1 protein than IL-1β alone.
Conclusions: IL-17 upregulated the production of IL-6 and MMP-1 sequentially in HPDLF. IL-6/sIL-6R may enhance the effects of IL-1β on MMP-1 production. The present results suggest that IL-17 induces MMP-1 production not only directly, but also indirectly by promoting IL-6 production, thus resulting in the degradation of collagens in the PDL.
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http://dx.doi.org/10.1111/ocr.12033 | DOI Listing |
Biomech Model Mechanobiol
January 2025
Department of Mechanical Engineering, University of Louisiana at Lafayette, Lafayette, LA, 70503, USA.
This research demonstrates a systematic curve fitting approach for acquiring parametric values of hyperelastic constitutive models for both healthy and enzymatically mediated degenerated cartilage to facilitate finite element modeling of cartilage. Several widely used phenomenological hyperelastic constitutive models were tested to adequately capture the changes in cartilage mechanics that vary with the differential/unequal abundance of matrix metalloproteinases (MMPs). Trauma and physiological conditions result in an increased production of collagenases (MMP-1) and gelatinases (MMP-9), which impacts the load-bearing ability of cartilage by significantly deteriorating its extracellular matrix (ECM).
View Article and Find Full Text PDFBiomater Res
January 2025
Center for Plastic & Reconstructive Surgery, Department of Dermatology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou 310014, Zhejiang, China.
Cutaneous photoaging, induced by chronic exposure to ultraviolet (UV) radiation, typically manifests as alterations in both the physical appearance and functional properties of the skin and may predispose individuals to cancer development. Recent studies have demonstrated the reparative potential of exosomes derived from mesenchymal stem cells in addressing skin damage, while specific reports highlight their efficacy in ameliorating skin photoaging. However, the precise role of exosomes derived from human hair follicle mesenchymal stem cells (HFMSC-Exos) in the context of cutaneous photoaging remains largely unexplored.
View Article and Find Full Text PDFAntioxidants (Basel)
November 2024
Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano, 49, 80131 Naples, Italy.
Although edible flowers have been historically principally used due to their visual appeal and smell, the world is discovering their value as innovative and natural sources of bioactive compounds. L. (CpL), a plant from the Cucurbitaceae family, is widely cultivated for its edible fruits and flowers, which are rich in polyphenols and carotenoids-compounds known for their potent antioxidant and anti-inflammatory properties.
View Article and Find Full Text PDFSci Rep
January 2025
School of Pharmacy, School of Modern Chinese Medicine Industry, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
Plant extracts, especially herbal extracts, are in line with the cosmetics development trend of natural and safe in today's world. Dried ginger essential oil (DGEO) is a fragrant oily liquid extracted from the dried roots of Zingiber officinale Rosc. This research investigated DGEO could effectively inhibit Staphylococcus aureus and Propionibacterium acnes.
View Article and Find Full Text PDFJ Nutr
December 2024
USDA Western Human Nutrition Research Center, University of California, Davis, Davis, CA, United States; Department of Nutrition, University of California, Davis, Davis, CA, United States. Electronic address:
Background: Immune function is affected by vitamin D status, but the optimal serum 25-hydroxy vitamin D [25(OH)D] concentration for immune function is not known.
Objectives: We hypothesized that 25(OH)D would be associated with markers of inflammation and immune activation.
Methods: We identified associations between 25(OH)D and immune markers from 361 healthy adults using polynomial regression.
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