16 research outputs found
Morphology of immature stages of Helophorus (Gephelophorus) auriculatus (Coleoptera, Helophoridae)
No full textFig. 3. First instar larva of Helophorus auriculatus Sharp, 1884. Anterior margin of head capsule, dorsal view.Published as part of Minoshima, Yûsuke N. & Watanabe, Reiya, 2020, Morphology of immature stages of Helophorus (Gephelophorus) auriculatus (Coleoptera, Helophoridae), pp. 319-332 in Acta Entomologica Musei Nationalis Pragae 60 (1) on page 323, DOI: 10.37520/aemnp.2020.018, http://zenodo.org/record/387991
First record of the hygropetric genus Oocyclus Sharp (Coleoptera: Hydrophilidae) from Laos, with description of a new species
No full textThe genus Oocyclus Sharp, 1882 is recorded from Laos for the first time. Two species are recognized, including a new species: O. rupicola sp. n. and O. thailensis Short et Swanson, 2005. Male genital segments and female spermathecal organs are illustrated, and the latter is also described for each species. SEM photographs of several useful taxonomic features are provided. Digital photographs of the holotype of O. rupicola are provided (online version in color). A key to the species of the genus from the Indochina peninsula is given
Going underwater: multiple origins and functional morphology of piercing-sucking feeding and tracheal system adaptations in water scavenger beetle larvae (Coleoptera: Hydrophiloidea)
No full textLarvae of water scavenger beetles (Coleoptera: Hydrophiloidea) are adapted to a wide variety of aquatic habitats, butlittle is known about functional and evolutionary aspects of these adaptations. We review the functional morphologyand evolution of feeding strategies of larvae of the families Hydrophilidae and Epimetopidae based on a detailedscanning electron microscope (SEM) analysis, analysis of video records of feeding behaviour and observations ofliving larvae. There are two main types of feeding mechanisms: chewing and piercing-sucking. The character mappingusing the latest phylogenetic hypothesis for Hydrophiloidea infers the chewing system as the ancestral condition. Thepiercing-sucking mechanism evolved at least four times independently: once in Epimetopidae (Epimetopus) and threetimes in Hydrophilidae (Berosini: Berosus + Hemiosus; Laccobiini: Laccobius group; Hydrobiusini: Hybogralius). Thepiercing-sucking apparatus allows underwater extra-oral digestion and decreases the dependence of larvae on an aerialenvironment. A detailed study of the tracheal morphology of the piercing-sucking lineages reveals four independentorigins of the apneustic respiratory system, all of them nested within lineages with piercing-sucking mouthparts. Weconclude that piercing-sucking mouthparts represent a key innovation, which allows for the subsequent adaptation ofthe tracheal system, influences the diversification dynamics of the lineages and allows the shift to new adaptive zones.Fil: Rodriguez, Valeria Georgina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; ArgentinaFil: Fikácek, Martin. Karlova Univerzita (cuni); República ChecaFil: Minoshima, Yusuke N. Kitakyushu Museum of Natural History and Human History; JapónFil: Archangelsky, Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagónica. Universidad Nacional de la Patagonia "San Juan Bosco". Centro de Investigación Esquel de Montaña y Estepa Patagónica; ArgentinaFil: Torres, Patricia Laura Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentin
Fig. 8 in Comparative morphology of immature stages and adults of Hydroscapha from Taiwan, with description of a new species from Hong Kong (Coleoptera: Myxophaga: Hydroscaphidae)
No full textFig. 8. Habitats of Hydroscapha in Taiwan and Hong Kong. A–C, mass occurrence of H. takahashii in Taiwan, Heshe: A, detail of living beetles in algal mat at wet concrete wall; B, wet concrete wall with algae at sides of Zhenyoulanxi river; C, view of algal mat showing numerous adults and larvae. D, E, type locality of H. shuihau, new species, in Hong Kong: D, general view of marsh below Shui Hui village, with small seeps at concrete trail; E, microhabitat at sides of concrete trail from where beetles were collected; F, algal mats at side of a small river in Taiwan: Wufeng, with mass occurrence of H. takahashii.Published as part of Fikáček, Martin, Hu, Fang-Shuo, Aston, Paul, Jia, Feng-Long, Liang, Wei-Ren, Liu, Hsing-Che & Minoshima, Yûsuke N., 2020, Comparative morphology of immature stages and adults of Hydroscapha from Taiwan, with description of a new species from Hong Kong (Coleoptera: Myxophaga: Hydroscaphidae), pp. 334-349 in Raffles Bulletin of Zoology 68 on page 345, DOI: 10.26107/RBZ-2020-0051, http://zenodo.org/record/457684
Phylogeny, systematics and rarity assessment of New Zealand endemic Saphydrus beetles and related enigmatic larvae (Coleoptera : Hydrophilidae : Cylominae)
No full textData files for the paper
Der Einfluss Parkinson-assoziierter Gene auf mitochondriale Morphologie, Dynamik und Funktion
No full textSynthetic Small Molecules for Epigenetic Activation of Pluripotency Genes in Mouse Embryonic Fibroblasts
No full textRepetitive transcranial magnetic stimulation attenuates the perception of force output production in non-exercised hand muscles after unilateral exercise
No full textWe examined whether unilateral exercise creates perception bias in the non-exercised limb and ascertained whether rTMS applied to the primary motor cortex (M1) interferes with this perception. All participants completed 4 interventions: 1) 15-min learning period of intermittent isometric contractions at 35% MVC with the trained hand (EX), 2) 15-min learning period of intermittent isometric contractions at 35% MVC with the trained hand whilst receiving rTMS over the contralateral M1 (rTMS+EX); 3) 15-min of rTMS over the ‘trained’ M1 (rTMS) and 4) 15-min rest (Rest). Pre and post-interventions, the error of force output production, the perception of effort (RPE), motor evoked potentials (MEPs) and compound muscle action potentials (CMAPs) were measured in both hands. EX did not alter the error of force output production in the trained hand (Δ3%; P>0.05); however, the error of force output production was reduced in the untrained hand (Δ12%; P0.05). RPE was significantly higher after rTMS+EX in the trained hand (9.2±0.5 vs. 10.7±0.7; P0.05). The novel finding was that exercise alone reduced the error in force output production by over a third in the untrained hand. Further, when exercise was combined with rTMS the transfer of force perception was attenuated. These data suggest that the contralateral M1 of the trained hand might, in part, play an essential role for the transfer of force perception to the untrained hand
Personality and attention bias in adults with a history of childhood trauma, and attenuating effects of mu-opioid agonist buprenorphine on attention bias
No full textThe current study compared personality characteristics and cognitive functioning (specifically, attentional bias) in a sample of adults who had experienced childhood trauma (the Trauma group) and a matched healthy control group. The study also examined the possible effects of the mu-opioid agonist buprenorphine on attentional bias in the Trauma group
Characterisation of DJ1 (PARK7) in human brain: possible involvement in idiopathic Parkinson's disease and other neurodegenerative disorders
No full textMutations in the DJ‐1 gene can induce the development of early‐onset Parkinson's disease
(PD) through a loss of protein function. Currently any possible role for DJ‐1 in sporadic PD
remains undetermined. To address this, we have studied the characteristics and activities of
DJ‐1 in post‐mortem human brain tissue in order to gain insights into its contribution to the
development of PD and other neurodegenerative disorders.
Western blotting revealed DJ‐1 protein expression to be reduced in several brain regions
associated with PD pathology including nigra, striatum and frontal cortex. Similarly levels of
DJ‐1 mRNA were also shown to also be lower in PD striatum and frontal cortex suggesting a
transcriptional regulation of protein expression in human brain. Further analysis of DJ‐1
gene expression showed PD related changes to be variable throughout the brain, with
regions like the amygdala and entorhinal cortex displaying an up‐regulation. DJ‐1 protein
was also shown to undergo increased oxidation in PD cases, highlighting the elevated
oxidative stress conditions in PD. By using immunoprecipitation to investigate a possible role for DJ‐1 as an in vivo regulator
of translation, we found DJ‐1 protein associates with RNA transcripts for selenoproteins,
PTEN/Akt pathway components and mitochondrial subunits of complex 1. Protein levels for
a number of these transcripts were altered in PD tissue without any parallel change in
mRNA levels. DJ‐1 is reportedly involved in a diverse range of cellular activities and its
proclivity to associate with multiple RNA species provides a simple biochemical mechanism
for this. Moreover it demonstrates that under conditions of elevated oxidative stress, DJ‐1
can instigate a rapid and compartmentalised up‐regulation of pro‐survival proteins in a
transcriptionally independent manner.
Analysis of DJ‐1 in tauopathies showed co‐localisation with 3R and 4R tau, implicating a
possible chaperone function for DJ‐1. Unlike in PD, no altered expression of DJ‐1 mRNA and
protein was observed
