Advanced glycation end-products increase IL-6 and ICAM-1 expression via RAGE, MAPK and NF-κB pathways in human gingival fibroblasts

2017 ◽  
Vol 53 (3) ◽  
pp. 334-344 ◽  
Author(s):  
K. Nonaka ◽  
Y. Kajiura ◽  
M. Bando ◽  
E. Sakamoto ◽  
Y. Inagaki ◽  
...  
Keyword(s):  
Advanced Glycation End Products ◽  
Human Gingival Fibroblasts ◽  
Gingival Fibroblasts ◽  
Advanced Glycation ◽  
Glycation End Products ◽  
End Products

scholarly journals 6-Shogaol Inhibits Advanced Glycation End-Products-Induced IL-6 and ICAM-1 Expression by Regulating Oxidative Responses in Human Gingival Fibroblasts

Molecules ◽  
2019 ◽  
Vol 24 (20) ◽  
pp. 3705 ◽  
Author(s):  
Nonaka ◽  
Bando ◽  
Sakamoto ◽  
Inagaki ◽  
Naruishi ◽  
...  
Keyword(s):  
Advanced Glycation End Products ◽  
Inflammatory Responses ◽  
Human Gingival Fibroblasts ◽  
Heme Oxygenase 1 ◽  
Gingival Fibroblasts ◽  
Advanced Glycation ◽  
Periodontal Tissues ◽  
Glycation End Products ◽  
End Products ◽  
Oxidative Responses

Advanced glycation end-products (AGEs) cause diabetes mellitus (DM) complications and accumulate more highly in periodontal tissues of patients with periodontitis and DM. AGEs aggravate periodontitis with DM by increasing the expression of inflammation-related factors in periodontal tissues. 6-Shogaol, a major compound in ginger, has anti-inflammatory and anti-oxidative activities. However, the influence of shogaol on DM-associated periodontitis is not well known. In this study, the effects of 6-shogaol on AGEs-induced oxidative and anti-oxidative responses, and IL-6 and ICAM-1 expression in human gingival fibroblasts (HGFs) were investigated. When HGFs were cultured with 6-shogaol and AGEs, the activities of reactive oxygen species (ROS) and antioxidant enzymes (heme oxygenase-1 [HO-1] and NAD(P)H quinone dehydrogenase 1 [NQO1]), and IL-6 and ICAM-1 expressions were investigated. RAGE expression and phosphorylation of MAPKs and NF-κB were examined by western blotting. 6-Shogaol significantly inhibited AGEs-induced ROS activity, and increased HO-1 and NQO1 levels compared with the AGEs-treated cells. The AGEs-stimulated expression levels of receptor of AGE (RAGE), IL-6 and ICAM-1 and the phosphorylation of p38, ERK and p65 were attenuated by 6-shogaol. These results suggested that 6-shogaol inhibits AGEs-induced inflammatory responses by regulating oxidative and anti-oxidative activities and may have protective effects on periodontitis with DM.

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