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  • Platelet-derived endothelial cell growth factor  (2)
  • Collagen  (1)
  • Diptera  (1)
  • 1
    ISSN: 0009-8981
    Keywords: Angiogenesis ; Enzyme immunoassay ; Gliostatin ; Platelet-derived endothelial cell growth factor ; Rheumatoid arthritis ; Synovial fluids
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1420-908X
    Keywords: IL-10 ; Collagen ; Arthritis ; Macrophage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In the present study we investigated the effect of a potent anti-inflammatory cytokine, interleukin (IL)-10, on the development of collagen-induced arthritis (CIA) in mice. Each DBA1/J mouse was immunized with 200 μg of native collagen and followed by booster injections at 3 weeks. rmIL-10 was injected i.p. daily at a dose of 100 ng/mouse. Mice were divided into four groups according to the administration period of rmIL-10. As a result, a 48-day course of IL-10 treatment significantly suppressed the severity of arthritis. Among the 4 groups, the most pronounced suppression was observed in the group in which IL-10 was given from day 0 to 21. On the other hand, there were no significant differences in the serum IgG anti-type II collagen (CII) titers between the four groups. Moreover, the production of cytokines (IL-6 and tumor necrosis factor-α (TNF-α)) and other mediators (prostaglandin E2 (PGE2) and nitric oxide (NO)) by peritoneal macrophages seemed to show no clear correlation with the severity of arthritis in mice. These results raise the possibility that IL-10 might be a useful agent for suppressing the progression and the development of CIA in mice.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1437-160X
    Keywords: Key words Gliostatin ; Thymidine phosphorylase ; Platelet-derived endothelial cell growth factor ; Rheumatoid arthritis ; Rabbit
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Neovascularization, proliferation of synovial cells, and mononuclear cell influx and activation are characteristic events observed in synovial joints in the pathohistology of rheumatoid arthritis (RA). The objective of this study was to examine synovial inflammation in rabbit knees induced by intra-articular administration of human gliostatin/platelet-derived endothelial cell growth factor (GLS/PD-ECGF), which shares a high degree of chemical homology with thymidine phosphorylase (dThdPase) and is known to have angiogenic activity. Purified recombinant human gliostatin (rHuGLS) and its mutant protein, which was prepared by site-directed mutagenesis and which lacks dThdPase activity, were administered at various doses to rabbit knee joints. The effects of rHuGLS and the mutant were examined histologically. Intra-articular injection of rHuGLS resulted in the development of diffuse synovitis resembling RA. The mutant protein also brought about the same effect. These findings suggest that human GLS can cause RA-like synovitis in rabbit knee joints via a mechanism other than its dThdPase activity.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1573-1561
    Keywords: Mosquito ; Culex pipiens fatigans ; Diptera ; Culicidae ; oviposition ; attractant ; pheromone ; chiral chromatography ; acetoxyhexadecanolide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract 6-Acetoxy-5-hexadecanolide (Ia) in the oviposition attractant pheromone released from egg apical droplets of the mosquitoCulex pipiens fatigans Wied. is shown to be the (−)-(5R,6S)- enantiomer. Identification was by chromatography of the 6-trifluoroacetoxy derivatives of the natural pheromone and of the synthetic (−)-(5R,6S)- (Ib) and (+)-(5S,6R)- (IIb) enantiomers on a capillary column having a chiral stationary phase comprising a derivative of (1S,3S)-chrysanthemic acid. The synthetic (−)-(5R,6S)- enantiomer (Ia) attracted oviposition of four fold more mosquito egg rafts than the control (P 〈 0.01) whereas for the (5S,6R)- enantiomer (IIa) there was no statistically significant oviposition attraction.
    Type of Medium: Electronic Resource
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