Otolith crystals (in Carapidae): Growth and habit
Parmentier, Eric ; Cloots, Rudi ; et al
in Journal of Structural Biology (2007), 159(3), 462-473
The biomineralization of otoliths results mainly from the release of soluble Ca(2+), which is in turn precipitated as CaCO(3) crystals. In some Carapidae, sagittae sections have been shown to reveal a ... [more ▼]
The biomineralization of otoliths results mainly from the release of soluble Ca(2+), which is in turn precipitated as CaCO(3) crystals. In some Carapidae, sagittae sections have been shown to reveal a three-dimensional asymmetry with a nucleus close to the sulcal side, an unusual position. This study seeks to understand otolith formation in Carapus boraborensis. The unusual shape of the otolith is partly explained by the distribution of the epithelium cells, and particularly the sensory epithelium. Experimental evidence shows for the first time that aragonite growth takes place along the c-axis. These aragonite needles present two different habits. On the sulcal side is found the acicular form resulting from rapid growth during a short period of time. On the anti-sulcal side, the prismatic form seen there is due to a slower growth speed over longer periods. The otolith surface was observed each hour during a period of 24h in fishes reared in similar conditions. This allowed for the first time the direct observation on the otolith surface of the deposition of the two layers (L-zone and D-zone). In C. boraborensis, the organic-rich layer (D-zone) develops during the day, whereas the CaCO(3) layer (L-zone) seems to be deposited during the night. [less ▲]Detailed reference viewed: 49 (7 ULg)
Ototoxic drugs: difference in sensitivity between mice and guinea pigs.
Poirrier, Anne-Lise ; ; et al
in Toxicology Letters (2010), 193(1), 41-9
The development of experimental animal models has played an invaluable role in understanding the mechanisms of neurosensory deafness and in devising effective treatments. The purpose of this study was to ... [more ▼]
The development of experimental animal models has played an invaluable role in understanding the mechanisms of neurosensory deafness and in devising effective treatments. The purpose of this study was to develop an adult mouse model of ototoxic drug-induced hearing loss and to compare the ototoxicity in the adult mouse to that in the well-described guinea pig model. Mice are a powerful model organism, especially due to the large availability of antibodies, probes and genetic mutants. In this study, mice (n=114) and guinea pigs (n=35) underwent systemic treatment with either kanamycin or cisplatin. Auditory brainstem responses showed a significant threshold shift in guinea pigs 2 weeks after the beginning of the ototoxic treatment, while there was no significant hearing impairment recorded in mice. Hair cells and neuronal loss were correlated with hearing function in both guinea pigs and mice. These results indicate that the mouse is not a good model for ototoxicity, which should be taken into consideration in all further investigations concerning ototoxicity-induced hearing loss. [less ▲]Detailed reference viewed: 66 (14 ULg)
La otra cara de la ciudad : los pobres en el contexto psicosocial del bienestar
Born, Michel ;
in Gomez, D. E. (Ed.) Ciudades saludables (1992)Detailed reference viewed: 41 (0 ULg)
Otto Neurath, planification urbaine et projet encyclopédique. Une voie de l’austromarxisme.
Conference (2015, January)Detailed reference viewed: 12 (0 ULg)
Où ai-je posé mes clefs ? Les erreurs de glissement de mémoire dans le vieillissement normal et pathologique
; ; et al
Poster (2010, September 24)Detailed reference viewed: 83 (2 ULg)
Où en est la formation continue des enseignants des cours techniques et de pratique professionnelle dans l'enseignement secondaire en communauté française de Belgique ? : 'état des lieux' et propositions d'amélioration
; Georges, François ; Denis, Brigitte
in Point sur la Recherche en Education (Le) (1999), 13Detailed reference viewed: 24 (9 ULg)
Où en sont le droit et la justice en Belgique face au phénomène migratoire ?
Martiniello, Marco ;
Scientific conference (2004, May 25)
Où et comment publier ? Présentation de la revue Territoire(s)
Conference (2013, July 10)Detailed reference viewed: 15 (3 ULg)
Où il est question de se faire une idée juste de la réalité... (partie 1)
in Medi-Sphere (2014), 454Detailed reference viewed: 7 (1 ULg)
Où il est question des origines littéraires de Cosi fan tutte ossia la scuola degli amanti
in Art&Fact (1991), 10Detailed reference viewed: 48 (32 ULg)
"Où l'on voit que la notion de legs universel prend, sans raison valable, un sens très particulier"
in Revue du Notariat Belge (2010)Detailed reference viewed: 35 (11 ULg)
Où nichait le martinet noir avant que l'homme construise des habitations ? Réflexions sur la conservation de la nature en milieu forestier
in Région Wallonne, Division Nature & Forêts, Travaux (1998), 20Detailed reference viewed: 92 (2 ULg)
Où peut-on planter l’aulne glutineux avec succès ?
in Silva Belgica (1994), 101Detailed reference viewed: 18 (2 ULg)
Où sont les métaux pour les technologies du futur?
Conference given outside the academic context (2013)Detailed reference viewed: 120 (33 ULg)
Où va l’eau wallonne ? Débats et polémiques à Liège autour du traité Escaut-Rhin (1963-1965)
in Raxhon, Philippe (Ed.) Liège à la conquête de l'eau. Des origines au centenaire de la CILE (2012)Detailed reference viewed: 31 (9 ULg)