Ivana Valachova1, Emanuel Prochazka1, Jana Bohova1, Petr Novak2, Peter Takac3, Juraj Majtan1. 1. Institute of Zoology, Slovak Academy of Sciences, Dubravska cesta 9, 845 06 Bratislava, Slovakia. 2. Institute of Microbiology, Academy of Sciences of the Czech Republic, Videnska 1083, 14220 Prague, Czech Republic. 3. Institute of Zoology, Slovak Academy of Sciences, Dubravska cesta 9, 845 06 Bratislava, Slovakia ; Scientica s.r.o., Hybesova 33, 831 06, Bratislava, Slovakia.
Abstract
OBJECTIVE: To investigate the antibacterial properties of lucifensin in maggots of Lucilia sericata after septic injury. METHODS: In our preliminary study we have shown that injuring the maggots with a needle soaked in lipopolysaccharide solution induced within 24 h lucifensin expression in the fat body and in the grease coupler of the salivary glands. It is assumed that lucifensin is secreted solely from this tissue into the haemolymph (similar to other insect defensins) and not into secreted/excreted products. We used high-performance liquid chromatography fractionation and radial diffusion assay to investigate the antibacterial properties of haemolymph extracted from larvae after septic injury. RESULTS: After septic injury, production of lucifensin in the haemolymph is increased. This led to higher antibacterial activity of such haemolymph in comparison to non-stimulated larvae. COCLUSIONS: These results suggest that beside the previously demonstrated role of lucifensin in the debridement therapy, lucifensin is simultaneously important as a part of the systematic immune response.
OBJECTIVE: To investigate the antibacterial properties of lucifensin in maggots of Lucilia sericata after septic injury. METHODS: In our preliminary study we have shown that injuring the maggots with a needle soaked in lipopolysaccharide solution induced within 24 h lucifensin expression in the fat body and in the grease coupler of the salivary glands. It is assumed that lucifensin is secreted solely from this tissue into the haemolymph (similar to other insect defensins) and not into secreted/excreted products. We used high-performance liquid chromatography fractionation and radial diffusion assay to investigate the antibacterial properties of haemolymph extracted from larvae after septic injury. RESULTS: After septic injury, production of lucifensin in the haemolymph is increased. This led to higher antibacterial activity of such haemolymph in comparison to non-stimulated larvae. COCLUSIONS: These results suggest that beside the previously demonstrated role of lucifensin in the debridement therapy, lucifensin is simultaneously important as a part of the systematic immune response.
Authors: Ivana Valachová; Jana Bohová; Zuzana Pálošová; Peter Takáč; Milan Kozánek; Juraj Majtán Journal: Cell Tissue Res Date: 2013-04-28 Impact factor: 5.249
Authors: Václav Cerovský; Jan Zdárek; Vladimír Fucík; Lenka Monincová; Zdenek Voburka; Robert Bém Journal: Cell Mol Life Sci Date: 2009-11-18 Impact factor: 9.261