Extracellular products from virulent strain of Edwardsiella tarda stimulate mouse macrophages (RAW264.7) to produce nitric oxide (NO) and tumor necrosis factor (TNF)-

نویسندگان

  • Yajun Wang
  • Kiyoshi Osatomi
  • Asami Yoshida
  • Xiao Liang
  • Kinya Kanai
  • Tatsuya Oda
  • Kenji Hara
چکیده

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Extracellular products from virulent strain of Edwardsiella tarda stimulate mouse macrophages (RAW264.7) to produce nitric oxide (NO) and tumor necrosis factor (TNF)-alpha.

We have previously found that high virulent strain (NUF251) of Edwardsiella tarda, but not low virulent strain (NUF194), was able to survive and multiply within Japanese flounder (Paralichthys olivaceus) peritoneal macrophages. Further studies demonstrated that NUF251 induced much higher levels of NO and TNF-alpha productions than NUF194 in both Japanese flounder peritoneal macrophages and mous...

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Comparative analysis of the production of nitric oxide (NO) and tumor necrosis factor-alpha (TNF-alpha) from macrophages exposed to high virulent and low virulent strains of Edwardsiella tarda.

We previously reported that high virulent strain (NUF251) of Edwardsiella tarda has an ability to prevent the production of reactive oxygen species by macrophages, and is even capable of surviving and multiplying within Japanese flounder (Paralichthys olivaceus) peritoneal macrophages, whereas the low virulent strain (NUF194) has no such ability. In this study, we found that NUF251 and NUF194 i...

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FIVE ALPHA DIHYDROTESTOSTERONE (5α-DHT) MAY MODULATE NITRIC OXIDE RELEASE VIA ENDOGENOU S CYTOKINES IN PERITONEAL MA CROPHA GES OF NZB/BALBc MICE

Recent studies have established that sex hormones directly or indirectly affect T and B cells and macrophages by manipulating the production of cytokines. In this study the possibility of the effect of 5a-DHT on macrophage (MΦ) nitric oxide (NO) release via interleukin-l, 6 (lL-1β, IL-6) or tumor necrosis factor-a (TNFα) was investigated. The endogenous cytokines IL-1β, IL-6 and TNF-α were ...

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Anti-inflammatory Effects of PMX205 in Mouse Macrophage Periodontitis Model

Background: C5areceptor antagonistPMX205 is a synthetic hexapeptidecapable of blocking C5a-C5a receptor (C5aR) axis by simulating C5a active C-terminal amino acid residues. This hexapeptide presents good anti-inflammatory effects in a myriad inflammation models. The anti-inflammatory effect of PMX205 on periodontitis is yet to be fully fathomed. Objective: To examine the anti-inflammatory effec...

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Inhibitory effect of sulphated polysaccharide porphyran on nitric oxide production in lipopolysaccharide-stimulated RAW264.7 macrophages.

Porphyran, extracted from an edible red alga (Porphyra yezoensis), is a sulphated polysaccharide with a wide variety of biological activities including anti-tumour, antioxidant and immuno-modulating activities. In this study, we examined the effect of porphyran on nitric oxide (NO) production in mouse macrophage cell line RAW264.7 cells. Although no significant activity of porphyran to induce N...

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تاریخ انتشار 2017