Icariin protects murine chondrocytes from lipopolysaccharide-induced inflammatory responses and extracellular matrix degradation

Man Hai Liu, Jui Sheng Sun, Shaio Wen Tsai, Shiow Yunn Sheu, Ming Hong Chen

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

Septic arthritis is an inflammatory arthropathy characterized by degeneration of articular cartilage. Icariin, the main active flavonoid glucoside isolated from Epimedium pubescens, is used as antirheumatics (or antiinflammatory), tonics, and aphrodisiacs in traditional Chinese medicine. In this study, we used lipopolysaccharide (LPS) to simulate the in vitro inflammatory response of chondrocytes during septic arthritis. Our hypothesis is that the icariin can protect chondrocytes from LPS-induced inflammation and extracellular matrix degradation. The inflammation of neonatal mice chondrocytes was induced by LPS and the antiinflammatory effects were examined. The synthesis of nitric oxide was analyzed, whereas the titer of glycosaminoglycan and total collagen were measured and the gene expressions (including inducible nitric oxide synthase [iNOS], matrix metalloproteinase [MMP]-1, MMP-3, and MMP-13) were evaluated. The results showed that the viability of chondrocytes, extracellular matrix synthesis, was significantly decreased, whereas nitric oxide synthesis was significantly increased in the presence of 10-5 g/mL LPS. Icariin pretreatment can partially reverse these effects. The up-regulated expressions of MMP-1, 3, 13, cyclooxygenase-2 (COX-2), and iNOS genes by LPS treatment were also significantly down-regulated by the pretreatment of icariin to 1.8%, 0.056%, 7.7%, 3.1%, and 5.3% of the LPS-positive control sample, respectively. Our results demonstrate that icariin is a safe anabolic agent of chondrocytes. Icariin may exert its protective effects through inhibition of nitric oxide and MMP synthesis, and may then reduce the extracellular matrix destruction.

Original languageEnglish
Pages (from-to)57-65
Number of pages9
JournalNutrition Research
Volume30
Issue number1
DOIs
Publication statusPublished - Jan 2010

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Chondrocytes
Extracellular Matrix
Lipopolysaccharides
Matrix Metalloproteinase 3
Nitric Oxide
Matrix Metalloproteinase 1
Infectious Arthritis
Nitric Oxide Synthase Type II
Anti-Inflammatory Agents
Epimedium
Aphrodisiacs
Matrix Metalloproteinase 13
Inflammation
Anabolic Agents
Joint Diseases
Chinese Traditional Medicine
Glucosides
Articular Cartilage
Cyclooxygenase 2
Glycosaminoglycans

Keywords

  • Chondrocytes
  • COX-2
  • Gene expression
  • Icariin
  • Inflammation
  • iNOS
  • Mice
  • MMPs

ASJC Scopus subject areas

  • Endocrinology
  • Endocrinology, Diabetes and Metabolism
  • Nutrition and Dietetics

Cite this

Icariin protects murine chondrocytes from lipopolysaccharide-induced inflammatory responses and extracellular matrix degradation. / Liu, Man Hai; Sun, Jui Sheng; Tsai, Shaio Wen; Sheu, Shiow Yunn; Chen, Ming Hong.

In: Nutrition Research, Vol. 30, No. 1, 01.2010, p. 57-65.

Research output: Contribution to journalArticle

Liu, Man Hai ; Sun, Jui Sheng ; Tsai, Shaio Wen ; Sheu, Shiow Yunn ; Chen, Ming Hong. / Icariin protects murine chondrocytes from lipopolysaccharide-induced inflammatory responses and extracellular matrix degradation. In: Nutrition Research. 2010 ; Vol. 30, No. 1. pp. 57-65.
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