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Archives of Pharmacal Research

, Volume 20, Issue 6, pp 533–538 | Cite as

Inhibition of arachidonate release from rat peritoneal macrophage by biflavonoids

  • Song Jin Lee
  • Kun Ho Son
  • Hyeun Wook Chang
  • Sam Sik Kang
  • Hyun Pyo Kim
Research Articles

Abstract

Biflavonoid is one of unique classes of naturally-occurring bioflavonoid. Previously, certain biflavonoids were found to possess the inhibitory effects on phospholipase A2 activity and lymphocytes proliferation1 suggesting their anti-inflammatory/immunoregulatory potential. In this study, effects of several biflavonoids on arachidonic acid release from rat peritoneal macrophages were investigated, because arachidonic acid released from the activated macrophages is one of the indices of inflammatory conditions. When resident peritoneal macrophages labeled with [3H]arachidonic acid were activated by phorbol 12-myristate 13-acetate (PMA) or calcium ionophore, A23187, radioactivity released in the medium was increased approximately 4.1∼7.3 fold after 120 min incubation compared to the spontaneous release in the control incubation. In this condition, biflavonoids (10 uM) such as ochnaflavone, ginkgetin and isoginkgetin, showed inhibition of arachidonate release from macrophages activated by PMA (32.5∼40.0% inhibition) or A23187 (21.7∼41.7% inhibition). Amentoflavone showed protection only against PMA-induced arachidonate release, while apigenin, a monomer of these biflavonoids, did not show the significant inhibition up to 10 uM. Staurosporin (1 uM), a protein kinase C inhibitor, showed an inhibitory effect only against PMA-induced arachidonate release (96.8% inhibition). Inhibition of arachidonate release from the activated macrophages may contribute to an anti-inflammatory potential of biflavonoidsin vivo.

Key words

Macrophage Arachidonic acid Phospholipase A2 Flavonoid Biflavonoid Ochnaflavone Amentoflavone Ginkgetin Isoginkgetin Anti-inflammation 

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Copyright information

© The Pharmaceutical Society of Korea 1997

Authors and Affiliations

  • Song Jin Lee
    • 1
  • Kun Ho Son
    • 2
  • Hyeun Wook Chang
    • 3
  • Sam Sik Kang
    • 4
  • Hyun Pyo Kim
    • 1
  1. 1.College of PharmacyKangwon National UniversityChunchonKorea
  2. 2.Department Food NutritionAndong National UniversityAndongKorea
  3. 3.College of PharmacyYeungnam UniversityGyongsanKorea
  4. 4.Natural Products Research InstituteSeoul National UniversitySeoulKorea

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