Molecular characterization, tissue distribution, and ultrastructural localization of adipokinetic hormones in the CNS of the firebug Pyrrhocoris apterus (Heteroptera, Insecta)
Jazyk angličtina Země Spojené státy americké Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
25449136
DOI
10.1016/j.ygcen.2014.10.014
PII: S0016-6480(14)00415-8
Knihovny.cz E-zdroje
- Klíčová slova
- AKH, Electron microscopy, Immunoreaction, Insect brain, Pre-pro-hormone, Secretory granule,
- MeSH
- centrální nervový systém metabolismus ultrastruktura MeSH
- exprese genu MeSH
- fyziologický stres genetika MeSH
- Heteroptera * genetika metabolismus ultrastruktura MeSH
- hmyzí hormony genetika metabolismus MeSH
- klonování DNA MeSH
- kyselina pyrrolidonkarboxylová analogy a deriváty metabolismus MeSH
- molekulární sekvence - údaje MeSH
- oligopeptidy genetika metabolismus MeSH
- sekvence aminokyselin MeSH
- sekvence nukleotidů MeSH
- sekvenční homologie aminokyselin MeSH
- tkáňová distribuce MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- adipokinetic hormone MeSH Prohlížeč
- hmyzí hormony MeSH
- kyselina pyrrolidonkarboxylová MeSH
- oligopeptidy MeSH
Adipokinetic hormones (AKHs) are a group of insect metabolic neurohormones, synthesized and released from an endocrine retrocerebral gland, the corpus cardiacum (CC). Small amounts of AKH have also been identified in the brain, although their role in this organ is not clear. To address this gap in the knowledge about insect brain biology, we studied the nucleotide sequence, tissue distribution, and subcellular localization of AKHs in the brain and CC of the firebug Pyrrhocoris apterus. This insect expresses two AKHs; the octapeptides Pyrap-AKH and Peram-CAH-II, the presence of which was documented in the both studied organs. In situ hybridization and quantitative reverse-transcription (q-RT)-PCR revealed the expression of the genes encoding for both AKHs not only in the CC, but also in brain. Electron microscopy analysis of the brain revealed the presence of these hormones in specialized secretory granules localized predominantly in the cellular bodies of neurons. The hormones might be transported from the granules into the axons, where they could play a role in neuronal signaling. Under acute stress induced by the injection of 3μmol KCl, the level of AKHs in the brain increased to a greater extent than that in the CC. These results might indicate an enhanced role of brain-derived AKHs in defence reaction under acute stress situations.
Faculty of Science University of South Bohemia Branišovská 31 370 05 České Budějovice Czech Republic
Citace poskytuje Crossref.org
Hormonal Regulation of Response to Oxidative Stress in Insects-An Update
