Results 21 to 30 of about 9,285 (211)

Immune defense of Pieris brassicae larvae in challenged with Heterorhabditis bacteriophora, its symbiotic bacteria and metabolites [PDF]

open access: yesInvertebrate Survival Journal, 2017
In this study, virulence of the culture broth of Photorhabdus temperata subsp. temperata and its aqueous and organic extracts were investigated for 3rd and 4th instars of Pieris brassicae (Lepidoptera: Pieridae) larvae. Virulent efficacy was found in all
A Abdolmaleki   +4 more
doaj   +1 more source

Myriapod haemocyanin: the first three-dimensional reconstruction of Scolopendra subspinipes and preliminary structural analysis of S. viridicornis [PDF]

open access: yesOpen Biology, 2020
Haemocyanins (Hcs) are copper-containing, respiratory proteins that occur in the haemolymph of many arthropod species. Here, we report the presence of Hcs in the chilopode Myriapoda, demonstrating that these proteins are more widespread among the ...
K. C. T. Riciluca   +12 more
doaj   +1 more source

Relative phenoloxidase activity in the hemolymph of bacteria-infected insects.

open access: yes, 2023
Mean relative phenoloxidase activity per ml of hemolymph of G. mellonella larvae injected with different bacteria or with buffer controls at 4h, 24h, and 48h post-treatment. Absorbance measurements were taken 30 min after hemolymph incubation.
Ameni Loulou (12822365)   +6 more
core   +1 more source

A Polydnavirus Protein Tyrosine Phosphatase Negatively Regulates the Host Phenoloxidase Pathway

open access: yesViruses, 2022
Polydnavirus (PDV) is a parasitic factor of endoparasitic wasps and contributes greatly to overcoming the immune response of parasitized hosts.
Hong-Shuai Gao   +7 more
doaj   +1 more source

Role and Importance of Phenoloxidase in Insect Hemostasis [PDF]

open access: yesJournal of Innate Immunity, 2010
In response to microbial infection, insects mount several defense reactions including the induction of proteolytic cascades that lead to localized melanization and coagulation. Melanization requires the activation of prophenoloxidase (proPO) to its active form phenoloxidase (PO), a key enzyme that leads to the formation of melanin at wound sites and ...
Ioannis, Eleftherianos   +1 more
openaire   +2 more sources

Nutrient Pollution and Predation Differentially Affect Innate Immune Pathways in the Coral Porites porites

open access: yesFrontiers in Marine Science, 2020
Reef-building corals face a multitude of threats not only from global climate change but also local stressors such as nutrient pollution. Nutrient enrichment can amplify the negative effects of predation on corals by facilitating dysbiosis in the coral ...
Katherine E. Dougan   +5 more
doaj   +1 more source

Biochemical Studies of Chlorfluazuron and Diflubenzuron Effect on Chitinase and Phenol Oxidase and Biological Studies on the Black Cutworm Agrotis ipsilon (HUFN.) (Lepidoptera:Noctuidae). [PDF]

open access: yesJournal of Agricultural Chemistry and Biotechnology, 2017
Chlorfluazuron and diflubenzuron effect were biologicaly and biochemicaly were studied by treated Agrotis ipsilon at early stage 2nd instar larvae with two concentrations to show the stages diformities and changes in chitinase and phenoloxidase ...
Mona Al-Hadek, Hanan Taha
doaj   +1 more source

Tarantula Hemocyanin Shows Phenoloxidase Activity [PDF]

open access: yesJournal of Biological Chemistry, 1998
An enzyme generally catalyzes one well defined reaction with high specificity and efficiency. We report here in contrast that the copper protein hemocyanin of the tarantula Eurypelma californicum exhibits two different functions. These occur at the same active site.
H, Decker, T, Rimke
openaire   +2 more sources

Hemocyanin-derived phenoloxidase reaction products display anti-infective properties [PDF]

open access: yes, 2018
Hemocyanin is a multi-functional protein located in the hemolymph (blood) of certain arthropods and molluscs. In addition to its well-defined role in oxygen transport, hemocyanin can be converted into a phenoloxidase-like enzyme.
James Talbot   +2 more
core   +1 more source

Signature miRNAs involved in the innate immunity of invertebrates. [PDF]

open access: yesPLoS ONE, 2012
The innate immune system, including the cell-based immunity (mainly apoptosis and phagocytosis) and the humoral immunity (such as pro-phenoloxidase system), is the first defense line of animals against the infection of pathogens in a non-specific manner,
Geng Yang   +4 more
doaj   +1 more source

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