Search results for "BOS"
showing 10 items of 3713 documents
Activation of astroglial phospholipase D activity by phorbol ester involves ARF and Rho proteins.
2000
Primary cultures of rat cortical astrocytes express phospholipase D (PLD) isoforms 1 and 2 as determined by RT-PCR and Western blot. Basal PLD activity was strongly (10-fold) increased by 4beta-phorbol-12beta,13alpha-dibutyrate (PDB) (EC(50): 56 nM), an effect which was inhibited by Ro 31-8220 (0.1-1 microM), an inhibitor of protein kinase C (PKC), and by brefeldin A (10-100 microg/ml), an inhibitor of ADP-ribosylating factor (ARF) activation. Pretreatment of the cultures with Clostridium difficile toxin B-10463 (0.1-1 ng/ml), which inactivates small G proteins of the Rho family, led to a breakdown of the astroglial cytoskeleton; concomitantly, PLD activation by PDB was reduced by up to 50%…
Metabotropic glutamate receptors activate phospholipase D in astrocytes through a protein kinase C-dependent and Rho-independent pathway.
2003
Metabotropic glutamate receptors (mGluRs) are G protein-coupled receptors that mediate phospholipase D (PLD) activation in brain, but the mechanism underlying this response remains unclear. Here we used primary cultures of astrocytes as a cell model to explore the mechanism that links mGluRs to PLD. Glutamate activated both phospholipase C (PLC) and PLD with equal potency and this effect was mimicked by L-cysteinesulfinic acid, a putative neurotransmitter previously shown to activate mGluRs coupled to PLD, but not PLC, in adult brain. PLD activation by glutamate was dependent on Ca(2+) mobilization and fully blocked by both protein kinase C (PKC) inhibitors and PKC down-regulation, suggesti…
Effetti della terapia con Laser Nd- Yag nel trattamento riabilitativo della lombosciatalgia acuta: nostra esperienza
2015
Non-monophyly of the “cydnoid” complex within Pentatomoidea (Hemiptera: Heteroptera) revealed by Bayesian phylogenetic analysis of nuclear rDNA seque…
2017
The “cydnoid” complex of pentatomoid families, including Cydnidae, Parastrachiidae, Thaumastellidae, and Thyreocoridae, is morphologically defined by the presence of an array of more or less flattened stout setae (called coxal combs), situated on the distal margin of coxae. These structures, suggested to prevent the coxal-trochanteral articulation from injuries caused by particles of soil, sand or dust, by their nature and function are unknown elsewhere in the Heteroptera. As such, coxal combs were regarded as a synapomorphy of this group of families, and enabled the definition of it as a monophylum. In this study, the monophyly of the “cydnoid” complex of families is tested for the first t…
Does Intraspecific Variation in rDNA Copy Number Affect Analysis of Microbial Communities?
2021
Amplicon sequencing of partial regions of the ribosomal RNA loci (rDNA) is widely used to profile microbial communities. However, the rDNA is dynamic and can exhibit substantial interspecific and intraspecific variation in copy number in prokaryotes and, especially, in microbial eukaryotes. As change in rDNA copy number is a common response to environmental change, rDNA copy number is not necessarily a property of a species. Variation in rDNA copy number, especially the capacity for large intraspecific changes driven by external cues, complicates analyses of rDNA amplicon sequence data. We highlight the need to (i) interpret amplicon sequence data in light of possible interspecific and intr…
Muscle and serum metabolomes are dysregulated in colon-26 tumor-bearing mice despite amelioration of cachexia with activin receptor type 2B ligand bl…
2019
Cancer-associated cachexia reduces survival, which has been attenuated by blocking the activin receptor type 2B (ACVR2B) ligands in mice. The purpose of this study was to unravel the underlying physiology and novel cachexia biomarkers by use of the colon-26 (C26) carcinoma model of cancer cachexia. Male BALB/c mice were subcutaneously inoculated with C26 cancer cells or vehicle control. Tumor-bearing mice were treated with vehicle (C26+PBS) or soluble ACVR2B either before (C26+sACVR/b) or before and after (C26+sACVR/c) tumor formation. Skeletal muscle and serum metabolomics analysis was conducted by gas chromatography-mass spectrometry. Cancer altered various biologically functional groups …
Ecologia e selvicoltura dei boschi artificiali di conifere dei Monti Sicani (Sicilia)
2009
I rimboschimenti realizzati in Sicilia dopo il 1950 hanno contribuito notevolmente all’aumento della superficie forestale nell’Isola. In questo lavoro sono descritte e analizzate le caratteristiche ecologiche e selvicolturali dei rimboschimenti localizzati all’interno dei principali siti della Rete Natura 2000 dei Monti Sicani, con l’obiettivo di formulare idonee linee guida di gestione forestale sostenibile finalizzata ad aumentare la loro stabilità ecologico-strutturale e a favorire così i processi di rinaturalizzazione, diffusi spontaneamente in molte aree. L’indagine conoscitiva è stata condotta in ambiente GIS attraverso l’overlay tra la distribuzione dei rimboschimenti, classificati a…
Vecākā pirmsskolas vecuma bērna iztēles sekmēšana rokdarbos
2018
Bakalaura darba tēma ir Vecākā pirmsskolas vecuma bērnu iztēles sekmēšana rokdarbos. Darba autore: Vita Kismane Mērķis ir teorētiski un praktiski izzināt iztēles sekmēšanas iespējas rokdarbos. Bakalaura darba struktūra sastāv no teorētiskās un empīriskās- praktiskās daļas. Teorētiskajā daļā aplūkotas un aprakstītas dažādu autoru- A. Vorobjova, V. Hibneres, V. Meikšānes, O. Ņikiforova u. c., atziņas par iztēli kā izziņas procesu un iztēles attīstības likumsakarībām pirmsskolas vecuma bērniem, kā arī pedagoga un vides nozīme radošās darbības sekmēšanai rokdarbos. Pētījumā tika atspoguļots pētāmo grupu bērnu raksturojums un praktiskais darbs. Praktiskajā darbā tika plānotas un novadītas trīs n…
Gribas īpašību sekmēšana rokdarbos vecākā pirmsskolas vecuma bērniem
2017
Darba nosaukums: Gribas īpašību sekmēšana rokdarbos vecākā pirmsskolas vecuma bērniem. Darba saturs: 47.lpp.,15.tabulas.,3.attēli.,44. literatūras atsauces. Pētījuma mērķis: pētīt pirmsskolas vecuma bērnu gribas īpašību sekmēšanu ar rokdarbu palīdzību. Šo tēmu bakalaura darba autore izvēlējās saistībā ar mūsdienu tehnoloģiju straujo attīstību, kuras rezultātā ļoti aktuāla paliek tēma par bērnu gribas īpašību attīstību. Pedagogam jābūt ļoti radošam un gudram, lai spētu motivēt bērnu darboties ar rokām, veidojot rokdarbus. Bakalaura darba autore pētījuma teorētiskajā daļā balstās uz dažādu pedagoģijas un psiholoģijas zinātnieku atziņām. Teorētiskajā daļā tika apskatīti un analizēti tādi jautā…
La biodiversità dei boschi siciliani. Parte I: l’avifauna
2014
È stata censita la diversità delle specie ornitiche presente in alcune tipologie forestali della Regione Siciliana e la relazione tra le ornitocenosi, le scelte gestionali ed i diversi fattori abiotici e biotici. L’analisi della species richness (= numero delle specie) dimostra che essa è correlata con il bioclima, il diametro massimo degli individui arborei, il valore trofico di tutti gli strati di vegetazione ed il valore trofico dello strato arboreo. I boschi meso-supramediterranei sono più ricchi di specie rispetto ai boschi termomesomediterranei. L’importanza del diametro massimo degli individui arborei, che esprime indirettamente anche il tipo di gestione di un bosco, viene spiegata d…