Results 41 to 50 of about 9,285 (211)

Phenoloxidases and cytotoxicity in ascidians: an overview [PDF]

open access: yesFrontiers in Immunology, 2013
Phenoloxidases (POs) belong to a family of copper-containing proteins (including also hemocyanins) widely distributed among invertebrates. They are able to convert polyphenols to quinones and induce cytotoxicity through the production of reactive oxygen species, a fundamental event in many immune responses.
BALLARIN, LORIANO   +3 more
openaire   +1 more source

Symbiont‐Induced HSP83 Establishes Two‐Tiered Control of Antifungal Immunity in an Invasive Beetle–Fungus Complex

open access: yesAdvanced Science, EarlyView.
In an invasive beetle–fungus complex, the mutualist Leptographium procerum induces host HSP83 and modulates Toll‐dependent antifungal immunity. HSP83 mediates two‐tiered control by associating with selected fungal recognition receptors and restraining Dorsal‐driven antimicrobial peptide transcription.
Qingtai Yang   +8 more
wiley   +1 more source

In vitro effects on bacterial growth of phenoloxidase reaction products

open access: yes, 2010
An active phenoloxidase preparation from the freshwater crayfish Pacifastacus leniusculus exhibited a strong antibacterial effect in vitro on the bacteria Aeromonas hydrophila, Escherichia coli, Streptococcus pneumoniae whereas a weaker but still ...
Jiravanichpaisal, Pikul,   +3 more
core   +1 more source

THE EFFECTS OF PYRETHRUM EXTRACT ON Galleria mellonella HEMOLYMPH PHENOLOXIDASE ENZYME [PDF]

open access: yes, 2020
Pyrethrum is a natural neurotoxic insecticide which is obtained from the flowers of Chrysanthemum cinerariaefolium plant. Pyrethrum extract causes DNA damage, genotoxic effect, induction of autophagy and apoptosis, mitochondrial dysfunction, oxidative ...
KAYA, Serhat
core   +1 more source

Oxalic Acid Treatment: Short-Term Effects on Enzyme Activities, Vitellogenin Content, and Residual Oxalic Acid Content in House Bees, Apis mellifera L.

open access: yesInsects
Honeybees (Apis mellifera L.) have to face many challenges, including Varroa destructor infestation, associated with viral transmission. Oxalic acid is one of the most common treatments against Varroa.
Simona Sagona   +9 more
doaj   +1 more source

Guidelines for Immunomodulatory Assays of Food Bioactives on Drosophila melanogaster Model

open access: yesFuture Postharvest and Food, EarlyView.
Guidelines are proposed for evaluating the immunomodulatory effects of food bioactives in Drosophila melanogaster, involving treatment with bioactives, pathogen preparation, infection routes, and immune response assessment. This model highlights the conserved mechanisms of cellular and humoral immunity for studying host‐microbe interactions.
Wenqi Huang, Shiye Lin
wiley   +1 more source

Males are worse mothers: Comparing care patterns in a facultatively caring beetle

open access: yesInsect Science, EarlyView.
Why should biparental care exist if offspring fare just as well when only one parent is present? In the facultatively dependent burying beetle, Nicrophorus vespilloides, manipulating environmental quality reveals that biparental care benefits offspring in form of lower personal immune requirement and parents in term of weight gain.
Leon Müller   +2 more
wiley   +1 more source

The Effects of Noise on the Juvenile Life Stage of Crustaceans: Behavioral, Cellular, and Molecular Responses in Procambarus clarkii

open access: yesIntegrative Zoology, EarlyView.
Juvenile Procambarus clarkii exposed to noise exhibited behavioral changes, shifts in enzymatic activity, and altered expression of stress and immune genes. The findings highlight the sensitivity of invertebrate juveniles to anthropogenic acoustic pollution.
Maria Ceraulo   +8 more
wiley   +1 more source

Phenoloxidase activation in the embryo of the common cuttlefish Sepia officinalis and responses to the Ag and Cu exposure

open access: yes, 2009
International audienceThe prophenoloxidase (proPO) system catalysing the melanin production is considered as implicated in the innate immune system in invertebrates.
Bustamante, Paco   +17 more
core   +1 more source

Microbiome‐mediated immunity: Limited support from the gazelle dung beetle

open access: yesEcological Entomology, EarlyView.
Digitonthophagus gazella rely on a maternally inherited microbiome passed across generations via a maternal faecal pellet called the pedestal. We experimentally manipulated the presence of the pedestal, providing it to some individuals while withholding it from others to determine how pedestal microbiota may affect beetle immune potential.
Joshua A. Jones   +2 more
wiley   +1 more source

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