Results 241 to 250 of about 886,102 (271)
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Organisational immunity in social insects
Current Opinion in Insect Science, 2014Selection for disease control is believed to have contributed to shape the organisation of insect societies-leading to interaction patterns that mitigate disease transmission risk within colonies, conferring them 'organisational immunity'. Recent studies combining epidemiological models with social network analysis have identified general properties of
Stroeymeyt, Nathalie +2 more
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Insect immunity against microsporidia
Journal of Invertebrate PathologyMicrosporidia are a group of fungi-related, unicellular eukaryotic parasites that, over the course of their long evolutionary history, have colonized a wide range of hosts from other unicellular organisms to mammals. A significant portion of the described microsporidian species infect insects, including economically important ones such as honeybees and
Sergey A. Timofeev +2 more
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1995
The injection of Escherichia coli and Micrococcus luteus into the hemocoel of Aedes aegypti induces a potent antibacterial activity in the hemolymph. We have purified and fully characterized three 40-residue antibacterial peptides from the hemolymph of bacteria-challenged mosquitoes that are absent in naive mosquitoes.
Lowenberger, C +6 more
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The injection of Escherichia coli and Micrococcus luteus into the hemocoel of Aedes aegypti induces a potent antibacterial activity in the hemolymph. We have purified and fully characterized three 40-residue antibacterial peptides from the hemolymph of bacteria-challenged mosquitoes that are absent in naive mosquitoes.
Lowenberger, C +6 more
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Gut immunity in Lepidopteran insects
Developmental & Comparative Immunology, 2016Lepidopteran insects constitute one of the largest fractions of animals on earth, but are considered pests in their relationship with man. Key to the success of this order of insects is its ability to digest food and absorb nutrition, which takes place in the midgut. Because environmental microorganisms can easily enter Lepidopteran guts during feeding,
Kai, Wu +5 more
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Thioester-containing proteins and insect immunity
Molecular Immunology, 2004Here, we discuss the role of thioester-containing proteins in innate immune responses of insects. TEPs are represented by multi-member families both in the fruitfly, Drosophila melanogaster, and in the mosquito, Anopheles gambiae. Phylogenetic analysis of the family suggests that in these two dipteran species evolution of TEPs followed independent ...
Blandin, Stephanie, Levashina, Elena
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Bacteria and antiviral immunity in insects
Current Opinion in Insect Science, 2015Tripartite interactions between viruses, bacteria and hosts can have significant implications for the outcome of infections. In insects recent studies have shown that these interactions can greatly influence the transmission of vector borne disease, including transmission of dengue virus.
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1992
Diptericins are 9 kDa inducible antibacterial peptides initially isolated from immune haemolymph of Phormia (Diptera). Following the isolation of a Drosophila cDNA encoding a diptericin homologue, we have now cloned a genomic fragment containing the Drosophila diptericin gene.
Reichhart, Jean-Marc +7 more
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Diptericins are 9 kDa inducible antibacterial peptides initially isolated from immune haemolymph of Phormia (Diptera). Following the isolation of a Drosophila cDNA encoding a diptericin homologue, we have now cloned a genomic fragment containing the Drosophila diptericin gene.
Reichhart, Jean-Marc +7 more
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Insect Lectins and Innate Immunity
2001Proteins capable of recognizing carbohydrates are called lectins. Lectins are widely distributed in the animal as well as the plant kingdom and function in various ways. Lectins are assumed to play roles in mediating cellular and cell-substate interactions during development and immune reactions.
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1990
Injections of low doses of bacteria into larvae of Phormia terranovae induce the appearance of potent bactericidal peptides in the blood, among which predominate the anti-Gram positive insect defensins and the anti-Gram negative diptericins. Insect defensins show significant homologies to mammalian (including human) microbicidal peptides present in ...
Dimarcq, Jean-Luc +4 more
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Injections of low doses of bacteria into larvae of Phormia terranovae induce the appearance of potent bactericidal peptides in the blood, among which predominate the anti-Gram positive insect defensins and the anti-Gram negative diptericins. Insect defensins show significant homologies to mammalian (including human) microbicidal peptides present in ...
Dimarcq, Jean-Luc +4 more
openaire +1 more source