Results 61 to 70 of about 14,957 (210)

Peptidoglycan-dependent NF-κB activation in a small subset of brain octopaminergic neurons controls female oviposition

open access: yeseLife, 2019
When facing microbes, animals engage in behaviors that lower the impact of the infection. We previously demonstrated that internal sensing of bacterial peptidoglycan reduces Drosophila female oviposition via NF-κB pathway activation in some neurons (Kurz
Ambra Masuzzo   +7 more
doaj   +1 more source

A Tale of Two States: Similarities and Differences in Neuropeptide Signaling in Larval and Adult Drosophila

open access: yesJournal of Comparative Neurology, Volume 534, Issue 10, October 2026.
Neurosecretory cells of the brain are mostly the same in larvae and adults of Drosophila melanogaster and they produce the same neuropeptides and peptide hormones (NPHs), yet their functional roles differ to a large extent between the two stages. Many other peptidergic neurons change both in numbers and function.
Dick R. Nässel
wiley   +1 more source

Nanomaterials' Multigenerational Effects by Single and Joint Exposure in Non‐mammalian Models

open access: yesEnvironmental Toxicology, Volume 41, Issue 10, Page 957-974, October 2026.
ABSTRACT Nanotoxicology has mainly focused on single‐generation studies, leaving multigenerational toxicity underexplored. Having animal welfare recently gained importance, we aimed to provide the state‐of‐the‐art of knowledge about multigenerational effects in non‐mammalian models in the case of nanomaterials (NM) single and joint exposure to other ...
Andy Joel Taipe Huisa   +9 more
wiley   +1 more source

Octopamine Neurons in Lobsters: Location, Morphology, Release of Octopamine and Possible Physiological Role

open access: yesCold Spring Harbor Symposia on Quantitative Biology, 1976
Octopamine cells are found along second thoracic roots, where they serve as neurosecretory neurons capable of releasing octopamine at two distinct points: one into the hemolymph immediately before it enters the gills; one into the hemolymph immediately after it leaves the gills. The octopamine cells receive a cholinergic synaptic input. We presume that
E A, Kravitz   +4 more
openaire   +2 more sources

Octopamine mobilizes lipids from honey bee (Apis mellifera) hypopharyngeal glands

open access: yes, 2020
Recent widespread honey bee (Apis mellifera) colony loss is attributed to a variety of stressors, including parasites, pathogens, pesticides and poor nutrition.
Welchert, Ashley C   +6 more
core   +1 more source

Octopamine neuromodulation regulates Gr32a-linked aggression and courtship pathways in Drosophila males. [PDF]

open access: yesPLoS Genetics, 2014
Chemosensory pheromonal information regulates aggression and reproduction in many species, but how pheromonal signals are transduced to reliably produce behavior is not well understood.
Jonathan C Andrews   +7 more
doaj   +1 more source

Unspecific Peroxygenase‐Based Chemo‐Enzymatic Synthesis of Amino Alcohols for Pharmaceutical Preparation

open access: yesChemBioChem, Volume 27, Issue 18, 28 September 2026.
The conversion of amines using nonspecific peroxygenases has always presented a challenge. The use of specific protecting groups, combined with the integration of enzymatic catalysis into conventional chemical methods, opens up new possibilities for the direct and enantioselective synthesis of valuable pharmaceuticals in an innovative, cost‐effective ...
Simon Last   +5 more
wiley   +1 more source

General Stress Responses in the Honey Bee

open access: yesInsects, 2012
The biological concept of stress originated in mammals, where a “General Adaptation Syndrome” describes a set of common integrated physiological responses to diverse noxious agents.
Naïla Even   +2 more
doaj   +1 more source

Octopaminergic agonists for the cockroach neuronal octopamine receptor

open access: yesJournal of Insect Science, 2003
The compounds 1-(2,6-diethylphenyl)imidazolidine-2-thione and 2-(2,6-diethylphenyl)imidazolidine showed the almost same activity as octopamine in stimulating adenylate cyclase of cockroach thoracic nervous system among 70 octopamine agonists, suggesting ...
Akinori Hirashima   +3 more
doaj  

The effect of octopaminergic compounds on the behaviour and transmission of Gyrodactylus

open access: yesParasites & Vectors, 2011
Background The high transmission potential of species belonging to the monogenean parasite genus Gyrodactylus, coupled with their high fecundity, allows them to rapidly colonise new hosts and to increase in number.
Bron James E   +5 more
doaj   +1 more source

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