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Complement-mediated antiinflammatory effect of bisbenzylisoquinoline alkaloid fangchinoline

Identifieur interne : 001800 ( Istex/Corpus ); précédent : 001799; suivant : 001801

Complement-mediated antiinflammatory effect of bisbenzylisoquinoline alkaloid fangchinoline

Auteurs : M. Hristova ; R. Istatkova

Source :

RBID : ISTEX:CE03CA7EE43EB01C57799245A19E3486A35CD441

English descriptors

Abstract

Summary: Complement-mediated mode of action of bisbenzylisoquinoline alkaloid fangchinoline was investigated in vivo and in vitro. The application of fangchinoline intraperitoneally (i.p.) to complement normal mice, strain ICR, inhibited the complement activity in serum and peritoneal exudate. The substance activated serum complement of C5-deficient DBA/2 mice. Fangchinoline was able to provoke local inflammatory reaction in both strains after subcutaneous (s.c.) injection. The alkaloid suppressed paw swelling induced by live Candida albicans in ICR and DBA/2 mice. Its effect depended on the dose and time of injection prior to inflammatory reaction. The in vitro experiments proved the interference of fangchinoline action with post-C5 reactions. The substance augmented C5-convertase formation and functional activity. These results are in correspondence with our previous investigations, proving the complement-mediated action of fangchinoline. The antiinflammatory effect could be a consequence of the caused complement exhaustion.

Url:
DOI: 10.1016/S0944-7113(99)80059-2

Links to Exploration step

ISTEX:CE03CA7EE43EB01C57799245A19E3486A35CD441

Le document en format XML

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<div type="abstract">Summary: Complement-mediated mode of action of bisbenzylisoquinoline alkaloid fangchinoline was investigated in vivo and in vitro. The application of fangchinoline intraperitoneally (i.p.) to complement normal mice, strain ICR, inhibited the complement activity in serum and peritoneal exudate. The substance activated serum complement of C5-deficient DBA/2 mice. Fangchinoline was able to provoke local inflammatory reaction in both strains after subcutaneous (s.c.) injection. The alkaloid suppressed paw swelling induced by live Candida albicans in ICR and DBA/2 mice. Its effect depended on the dose and time of injection prior to inflammatory reaction. The in vitro experiments proved the interference of fangchinoline action with post-C5 reactions. The substance augmented C5-convertase formation and functional activity. These results are in correspondence with our previous investigations, proving the complement-mediated action of fangchinoline. The antiinflammatory effect could be a consequence of the caused complement exhaustion.</div>
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and
<ce:italic>in vitro</ce:italic>
. The application of fangchinoline intraperitoneally (i.p.) to complement normal mice, strain ICR, inhibited the complement activity in serum and peritoneal exudate. The substance activated serum complement of C5-deficient DBA/2 mice. Fangchinoline was able to provoke local inflammatory reaction in both strains after subcutaneous (s.c.) injection. The alkaloid suppressed paw swelling induced by live
<ce:italic>Candida albicans</ce:italic>
in ICR and DBA/2 mice. Its effect depended on the dose and time of injection prior to inflammatory reaction. The
<ce:italic>in vitro</ce:italic>
experiments proved the interference of fangchinoline action with post-C5 reactions. The substance augmented C5-convertase formation and functional activity. These results are in correspondence with our previous investigations, proving the complement-mediated action of fangchinoline. The antiinflammatory effect could be a consequence of the caused complement exhaustion.</ce:simple-para>
</ce:abstract-sec>
</ce:abstract>
<ce:keywords class="keyword">
<ce:section-title>Key words</ce:section-title>
<ce:keyword>
<ce:text>Fangchinoline</ce:text>
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<ce:keyword>
<ce:text>C5-convertase</ce:text>
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<ce:keyword>
<ce:text>
<ce:italic>Candida albicans</ce:italic>
paw inflammation</ce:text>
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</ce:keywords>
</head>
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<title>Complement-mediated antiinflammatory effect of bisbenzylisoquinoline alkaloid fangchinoline</title>
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<title>Complement-mediated antiinflammatory effect of bisbenzylisoquinoline alkaloid fangchinoline</title>
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<name type="personal">
<namePart type="given">M.</namePart>
<namePart type="family">Hristova</namePart>
<affiliation>Institute of Microbiology, Bulgarian Academy of Sciences, Sofia, Bulgaria</affiliation>
<affiliation>aAddress Maria Hristova, Institute of Microbiology, Bulgarian Academy of Sciences, 26 G. Bonchev Str., 1113 Sofia, Bulgaria</affiliation>
<affiliation>E-mail: maria@microbio.bas.bg</affiliation>
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<abstract>Summary: Complement-mediated mode of action of bisbenzylisoquinoline alkaloid fangchinoline was investigated in vivo and in vitro. The application of fangchinoline intraperitoneally (i.p.) to complement normal mice, strain ICR, inhibited the complement activity in serum and peritoneal exudate. The substance activated serum complement of C5-deficient DBA/2 mice. Fangchinoline was able to provoke local inflammatory reaction in both strains after subcutaneous (s.c.) injection. The alkaloid suppressed paw swelling induced by live Candida albicans in ICR and DBA/2 mice. Its effect depended on the dose and time of injection prior to inflammatory reaction. The in vitro experiments proved the interference of fangchinoline action with post-C5 reactions. The substance augmented C5-convertase formation and functional activity. These results are in correspondence with our previous investigations, proving the complement-mediated action of fangchinoline. The antiinflammatory effect could be a consequence of the caused complement exhaustion.</abstract>
<subject lang="en">
<genre>Key words</genre>
<topic>Fangchinoline</topic>
<topic>C5-convertase</topic>
<topic>Candida albicans paw inflammation</topic>
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