scholarly journals The Effect of 630 nm Photobiomodulation on the Anti-Inflammatory Effect of Human Gingival Fibroblasts

Photonics ◽  
2021 ◽  
Vol 8 (9) ◽  
pp. 360
Author(s):  
Zeqing Chen ◽  
Xuwen Liu ◽  
Haokuan Qin ◽  
Zhicheng Lu ◽  
Shijie Huang ◽  
...  
Keyword(s):  
Red Light ◽  
Chronic Inflammatory Disease ◽  
Human Gingival Fibroblasts ◽  
High Dose ◽  
Oxygen Species ◽  
Gingival Fibroblasts ◽  
Anti Inflammatory ◽  
Different Doses ◽  
Selection Of ◽  
Inflammatory Effect

Periodontal disease is the most common oral chronic inflammatory disease in humans. Recent studies have indicated that red light Photobiomodulation (PBM) could inhibit cell inflammation effectively, but the effect of different doses of PBM on the treatment of inflammation has to be improved. Thus, this study was aimed to investigate the effects of various doses of PBM (630 ± 30 nm, (1) 5 mW/cm2, 1 J/cm2, 200 s; (2) 5 mW/cm2, 3 J/cm2, 600 s; (3) 5 mW/cm2, 9 J/cm2, 1800 s; (4) 5 mW/cm2, 18 J/cm2, 3600 s; (5) 5 mW/cm2,36 J/cm2, 7200 s) on the anti-inflammatory response of human gingival fibroblasts. Our results suggested that PBM (630 ± 30 nm) with doses of 18 J/cm2 and 36 J/cm2 could significantly inhibit the production of inflammatory cytokines such as Prostaglandin E2 (PGE2) and IL-8, presumably due to the fact that a high dose of PBM treatment could reduce intracellular Reactive oxygen species (ROS) in human gingival fibroblasts, thus reducing the expression of COX-2 enzyme. In addition, it was found that treatment with different doses of PBM (630 ± 30 nm) did not result in reduced mitochondrial membrane potential and mitochondrial dysfunction in human gingival fibroblasts. Our study provides a theoretical reference for the selection of PBM parameters and the application of PBM in the clinical treatment of periodontitis.

scholarly journals Anti-inflammatory effect of hydroalcoholic extract of hibiscus rosa on acute and chronic inflammation

2016 ◽  
Vol 4 (2) ◽  
pp. 123
Author(s):  
Pankaj Verma ◽  
Swati Sharma ◽  
Vikas Kumar ◽  
Hema Chaudhary
Keyword(s):  
Chronic Inflammation ◽  
Soxhlet Extraction ◽  
Treated Group ◽  
Chronic Inflammatory Disease ◽  
Control Group ◽  
Hydroalcoholic Extract ◽  
Anti Inflammatory ◽  
Acute And Chronic Inflammation ◽  
Different Doses ◽  
Inflammatory Effect

Background: The present study was carried out to explore the efficiency of Indian herbal source from Hibiscus rosa against a chronic inflammatory disease. Hibiscus rosa belongs to Malvaceae, acts by suppression of inflammation mediators.Methods: Hydroalcoholic extract form Hibiscus rosa is prepared through soxhlet extraction and Diclofenac is used as the standard. Carrageenan and formaldehyde are administered to induce acute and chronic inflammation. Animals are divided into 6 groups with 6 animals each including Normal group, inflammatory control group, Diclofenac treated group and Hibiscus rosa treated group at different doses of 250 mg/kg, 500 mg/kg and 1000 mg/kg.Results: Different concentrations of Hibiscus rosa treated groups i.e. 250 mg/kg (p<0.05), 500 mg/kg (p<0.05) and 1000 mg/kg (p<0.01) showed significant reduction in Paw edema as compared to controls. Significant reduction in Body weight was also observed in Hibiscus rosa treated groups. Hematological profiles of Hibiscus rosa treated group are satisfying and significant.Conclusion: Results showed significant anti-inflammatory effect of Hydroalcoholic extract of Hibiscus rosa and justifying its therapeutic role in inflammatory condition..

scholarly journals Cytotoxic and anti-inflammatory effects of chitosan and hemostatic gelatin in oral cell culture

2021 ◽  
Vol 34 (2) ◽  
pp. 98-103
Author(s):  
Jessica Narvaez-Flores ◽  
Gabriela Vilar-Pineda ◽  
Laura Acosta-Torres ◽  
Rene Garcia-Contreras
Keyword(s):  
Cell Viability ◽  
Protein Detection ◽  
Human Gingival Fibroblasts ◽  
Dependent Manner ◽  
Gingival Fibroblasts ◽  
Bioactive Materials ◽  
Regenerative Dentistry ◽  
Anti Inflammatory ◽  
Inflammatory Effect

Chitosan is a biopolymer with bactericidal/bacteriostatic effect, biocompatible and biodegradable. It has been used in tissue engineering to replace tissues partially or completely by releasing bioactive materials or influencing cell growth, usually in regenerative medicine and dentistry. The aim of this study was to evaluate the cytotoxic and anti-inflammatory effect of chitosan alone or with hemostatic gelatin (Spongostand®) in cultures of human pulp cells (HPC), human gingival fibroblasts (HGF) and mouse pre-osteoblasts (MC3T3-E1, ATCC). HPC and HGF were isolated from patients. Cells were subcultured in DMEM. Chitosan was inoculated at different concentrations (0-0.5%) and hemostatic gelatins impregnated with chitosan (0.19%) were placed directly in the presence of cells and incubated for 24 hours. Cell viability was determined by MTT method and mean cytotoxic concentration (CC50) was calculated from the dose-response curve. Anti-inflammatory effect was calculated from the in vitro gingivitis model induced with interleukin 1beta (IL-1β) in HGF and protein detection. The data were subjected to Shapiro-Wilk, Kruskal-Wallis and Mann-Whitney tests. Experiments were performed in triplicate of three independent assays. Cell viability of HPC, HGF and MC3T3-E1 in contact with chitosan decreased significantly (p<0.05). The HPC were the most sensitive (CC50= 0.18%), followed by HGF (CC50=0.18%) and MC3T3-E1 (CC50= 0.19%). The cytotoxicity of gelatins impregnated with chitosan decreased cell viability of HGF and HPC by 11% and 5%, respectively. The proinflammatory effect was reduced significantly in the gingivitis model. To conclude, chitosan induces moderate cytotoxic effects alone or with hemostatic gelatin at 0.19%, in dose-dependent manner, with anti-inflammatory effects on human gingival fibroblasts. The use of chitosan as a biomaterial can be an excellent choice for use in regenerative dentistry.

scholarly journals Evaluation of Collagen Type-1 Production and Anti-Inflammatory Activities of Human Placental Extracts in Human Gingival Fibroblasts

2016 ◽  
Vol 25 (3) ◽  
pp. 277-281 ◽  
Author(s):  
Homare Akagi ◽  
Yasuhiro Imamura ◽  
Yoshimasa Makita ◽  
Hiroe Nakamura ◽  
Naomi Hasegawa ◽  
...  
Keyword(s):  
Collagen Type ◽  
Human Gingival Fibroblasts ◽  
Gingival Fibroblasts ◽  
Anti Inflammatory ◽  
Collagen Type 1

Reactive Oxygen Species (ROS)-Responsive Nanoprobe For Bioimaging And Targeted Therapy of Osteoarthritis

2021 ◽  
Author(s):  
Chong Shen ◽  
Ming Gao ◽  
Haimin Chen ◽  
Yanting Zhan ◽  
Qiumei Lan ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Cartilage Damage ◽  
Reactive Oxygen ◽  
Disease Classification ◽  
Oxygen Species ◽  
Stimulus Responsive ◽  
Targeting Peptide ◽  
Physiological Markers ◽  
Different Doses ◽  
Selection Of

Abstract Stimulus-responsive therapy that allows precise imaging-guided therapy is limited for osteoarthritis (OA) therapy due to the selection of proper physiological markers as stimulus. Based on that the over-production of Reactive Oxygen Species (ROS) is one of the leading causes of OA, we selected ROS as markers and designed a cartilage-targeting and ROS-responsive theranostic nanoprobe that is highly specific for effective bioimaging and therapy of OA. This nanoprobe was fabricated by using PEG micelles modified with ROS-sensitive thioketal linkers (TK) and cartilage-targeting peptide, termed TKC, which was then encapsulated with Dexamethasone (DEX) to form TKC@DEX nanoparticles. Results showed that the nanoprobe can smartly “turn on” in response to excessive ROS and “turn off” in the normal joint. By applying different doses of ROS inducer and ROS inhibitor, this nanoprobe can emit ROS-dependent fluorescence according to the degree of OA severity, helpful to precise disease classification in clinic. Specifically targeting cartilage, TKC@DEX could effectively respond to ROS and sustained release DEX to remarkably reduce cartilage damage in the OA joints. This smart, sensitive and endogenously activated ROS-responsive nanoprobe is promising for OA theranostics.

PRDX6 Alleviates Lipopolysaccharide-induced Inflammation in Human Gingival Fibroblasts by Regulation of NRF2

2021 ◽  
Author(s):  
Wen-ying Yang ◽  
Xiang Meng ◽  
Yue-rong Wang ◽  
Qing-qing Wang ◽  
Xin He ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Phospholipase A2 ◽  
Inflammatory Cytokines ◽  
Redox Balance ◽  
Human Gingival Fibroblasts ◽  
Oral Disease ◽  
Oxygen Species ◽  
Gingival Fibroblasts ◽  
Peroxiredoxin 6 ◽  
Mechanistic Insight

Abstract Purpose: Periodontitis is a progressive and inflammatory oral disease and results in the damage of the supporting tissues of teeth. Peroxiredoxin 6 (PRDX6) is an antioxidant enzyme identified as a redox balance regulator. This study aimed to investigate whether PRDX6 could protect human gingival fibroblasts (HGFs) from lipopolysaccharide (LPS) induced inflammation and its mechanisms.Methods: Both inflamed and non-inflamed human gingival tissues were collected to assess the expression of PRDX6 and NRF2 by Immunohistochemistry and Western blotting. Furthermore, HGFs were stimulated with LPS, MJ33 (PRDX6 phospholipase A2 inhibitor), or ML385 (NRF2 inhibitor). The expression levels of inflammatory cytokines were measured by RT-qPCR and ELISA, and reactive oxygen species (ROS) were detected using DCFH-DA.Results: PRDX6 was downregulated in inflamed gingival tissues. In HGFs, LPS induced inflammatory cytokines and ROS was upregulated in PRDX6 knockdown cells. Furthermore, co-treatment with MJ33 alleviated LPS-induced inflammatory cytokines and ROS while inhibiting NRF2 upregulated those in HGFs.Conclusion: Therefore, this study provided a new mechanistic insight that PRDX6, regulated by the NRF2 signaling, alleviates LPS-induced periodontitis in human gingival fibroblasts.

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