In vitro and in vivo inhibition of lectin mediated adhesion of pseudomonas aeruginosa by receptor blocking carbohydrates
- 1 July 1987
- journal article
- Published by Springer Nature in Infection
- Vol. 15 (4) , 237-240
- https://doi.org/10.1007/bf01644121
Abstract
In vitro andin vivo experiments with Balb/c mice andPseudomonas aeruginosa ATCC 27853 supported our hypothesis that bacterial lectins play an important role in the organotropy of infectious diseases.In vitro andin vivo adhesion ofP. aeruginosa was mediated by N-acetylneuraminic acid (NANA) receptors. Blocking of the binding sites (lectins) on the bacterial surfaces with competitive specific carbohydrates (NANA) completely prevented the bacterial adhesion processin vitro.In vivo the number of adherent organisms in various organs decreased dramatically in the presence of NANA, whereas non-related carbohydrates (e.g. D-galactose) just showed negligible effects. Additionally, the application of NANA-treated organisms protected the animals from septicemia and death. Therefore, blocking of bacterial lectin receptors with specific carbohydrates might be of clinical relevance to prevent bacterial attachment to organ cells. ExperimentelleIn vitro- undIn vivo-Studien mit Balb/c-Mäusen und demPseudomonas aeruginosa-Stamm ATCC 27853 bestätigten unsere Hypothese, daß bakterielle Lektine für die Organotropie von bakteriellen Infektionskrankheiten von besonderer Bedeutung sind. Die Adhäsion vonP. aeruginosa an Parenchymzellen verschiedener Organe (Lunge, Leber, Niere) wurdein vitro undin vivo durch N-Acetylneuraminsäure-(NANA-)spezifische bakterielle Rezeptoren (Lektine) vermittelt. Blockade der Bakterienlektine mit Rezeptor-komplementären Kohlenhydraten (NANA) verhinderte die Adhäsion vonP. aeruginosa in vitro.In vivo bewirkten NANA-Injektionen eine drastische Reduktion der adhärierenden Keime in Lunge, Leber und Niere, während andere Kohlenhydrate (z. B. D-Galaktose) keine Auswirkungen auf den Organbefall zeigten. Folgerichtig könnten sich aus diesen Befunden therapeutische Aspekte ergeben, da eine Lektinblockade mit spezifischen Glykokonjugaten bakterielle Organbesiedlungen verhindern könnte.Keywords
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