References of "MOONEN, Gustave"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailPlasticity of Developing and Adult Dorsal Root Ganglion Neurons as Revealed in Vitro
Delree, P.; Ribbens, Clio ULg; Martin, Didier ULg et al

in Brain Research Bulletin (1993), 30(3-4), 231-7

We review recent data on the plasticity of dorsal root ganglion (DRG) neurons as revealed during cultivation in vitro. Some experiments on cultured developing DRG neurons and on adult DRG neurons in vivo ... [more ▼]

We review recent data on the plasticity of dorsal root ganglion (DRG) neurons as revealed during cultivation in vitro. Some experiments on cultured developing DRG neurons and on adult DRG neurons in vivo are also mentioned. Cultured developing and adult DRG neurons can be switched from an apolar to a multipolar phenotype by fetal calf serum or fibronectin. The effect is concentration dependent and occurs through an early modification of cell-substratum interaction. Adult DRG neurons synthesize and release within hours after injury TGF beta-1, which is a mitogen and a differentiation factor for Schwann cells. Finally, adult DRG neurons express in vitro neurotransmitters that are not expressed in vivo. This neurotransmitter plasticity can be modulated in vitro by some growth factors and in vivo by distal or proximal axotomy. [less ▲]

Detailed reference viewed: 39 (4 ULg)
Peer Reviewed
See detailNaftidrofuryl affects neurite regeneration by injured adult auditory neurons.
Lefèbvre, Philippe ULg; Staecker, H.; Moonen, Gustave ULg et al

in Acta Oto-Laryngologica (1993), 113(4), 498-501

Afferent auditory neurons are essential for the transmission of auditory information from Corti's organ to the central auditory pathway. Auditory neurons are very sensitive to acute insult and have a ... [more ▼]

Afferent auditory neurons are essential for the transmission of auditory information from Corti's organ to the central auditory pathway. Auditory neurons are very sensitive to acute insult and have a limited ability to regenerate injured neuronal processes. Therefore, these neurons appear to be a limiting factor in restoration of hearing function following an injury to the peripheral auditory receptor. In a previous study nerve growth factor (NGF) was shown to stimulate neurite repair but not survival of injured auditory neurons. In this study, we have demonstrated a neuritogenesis promoting effect of naftidrofuryl in an vitro model for injury to adult auditory neurons, i.e. dissociated cell cultures of adult rat spiral ganglia. Conversely, naftidrofuryl did not have any demonstrable survival promoting effect on these in vitro preparations of injured auditory neurons. The potential uses of this drug as a therapeutic agent in acute diseases of the inner ear are discussed in the light of these observations. [less ▲]

Detailed reference viewed: 8 (1 ULg)
See detailNeuronal Control of Astrocytes Proliferation
Rogister, Bernard ULg; Leprince, Pierre ULg; Martin, Didier ULg et al

in Fedoroff, S.; Juurlink, B. H. J.; Doucette, R. (Eds.) Biology and pathology of astrocyte-neuron interactions (1993)

Detailed reference viewed: 10 (5 ULg)
Full Text
Peer Reviewed
See detailSyngeneic Grafting of Adult Rat Drg-Derived Schwann Cells to the Injured Spinal Cord
Martin, Didier ULg; Schoenen, Jean ULg; Delree, P. et al

in Brain Research Bulletin (1993), 30(3-4), 507-14

A subdural inflatable micro-balloon was used to induce closed traumatic contusion to adult rat spinal cord. This spinal cord injury model was associated with reproducible and graded neurological deficits ... [more ▼]

A subdural inflatable micro-balloon was used to induce closed traumatic contusion to adult rat spinal cord. This spinal cord injury model was associated with reproducible and graded neurological deficits and histopathological alterations. At various delays after injury, transplantations of syngeneic adult cultured dorsal root ganglion-derived Schwann cells were performed into the spinal cord lesion. The transplants were well integrated and reduced the microcystic posttraumatic cavitation as well as the gliosis. Schwann cells transplants were invaded by numerous regenerating neurites most of which, based upon their neurotransmitter contents, seem to originate from the dorsal root ganglion. [less ▲]

Detailed reference viewed: 26 (2 ULg)
Peer Reviewed
See detailNeurotransmitter phenotype plasticity in adult dorsal root ganglia neurons
Moonen, Gustave ULg; Delrée, P.; Martin, Didier ULg et al

in Restorative Neurology & Neuroscience (1993), 5

Detailed reference viewed: 23 (6 ULg)
Peer Reviewed
See detailTransplants of syngenic cultured, DRG-derived Schwann cells into the lesioned adult rat spinal cord.
Schoenen, Jean ULg; Martin, Didier ULg; Delrée, D. et al

Conference (1992, September 08)

Detailed reference viewed: 5 (0 ULg)
Full Text
Peer Reviewed
See detailExperimental Acute Traumatic Injury of the Adult Rat Spinal Cord by a Subdural Inflatable Balloon: Methodology, Behavioral Analysis, and Histopathology
Martin, Didier ULg; Schoenen, Jean ULg; Delree, P. et al

in Journal of Neuroscience Research (1992), 32(4), 539-50

We describe an experimental model to produce closed traumatic injuries to the spinal cord of adult rats. This model uses an inflatable balloon that is introduced in the dorsal subdural space and moved to ... [more ▼]

We describe an experimental model to produce closed traumatic injuries to the spinal cord of adult rats. This model uses an inflatable balloon that is introduced in the dorsal subdural space and moved to a location rostral to the laminectomy site. The spinal cord trauma can be graded by varying either the duration of compression or the volume of saline used to inflate the balloon. The locomotor deficit of animals with various degrees of injury has been assessed at increasing delays after trauma. The parameters generating transient or definitive deficits of varying intensity were defined. Some injured animals underwent nuclear magnetic resonance imaging. Detailed histopathological studies demonstrated that the extent of the spinal lesion was significantly correlated with the physical parameters of compression and with the severity of the behavioral deficit. [less ▲]

Detailed reference viewed: 19 (3 ULg)
Peer Reviewed
See detailTransplantation of syngenic adult rat DRG-derived Schwann cells to the injured spinal cord.
Martin, Didier ULg; Schoenen, Jean ULg; Delrée, P. et al

Conference (1992, June 14)

Detailed reference viewed: 6 (0 ULg)
Full Text
Peer Reviewed
See detailTgf Beta 1 Expression Is Initiated in Adult Auditory Neurons by Sectioning of the Auditory Nerve
LEFEBVRE, Philippe ULg; Martin, Didier ULg; Staecker, H. et al

in Neuroreport (1992), 3(4), 295-8

Neuronotrophic factors (e.g. basic fibroblast growth factor, bFGF and nerve growth factor, NGF) have been demonstrated to respectively promote survival and neuritogenesis in cultures of dissociated adult ... [more ▼]

Neuronotrophic factors (e.g. basic fibroblast growth factor, bFGF and nerve growth factor, NGF) have been demonstrated to respectively promote survival and neuritogenesis in cultures of dissociated adult rat spiral ganglia. Transforming growth factor beta (TGF beta 1) has been shown to modulate the response of cultured auditory neurons to bFGF through the induction of high affinity receptors for bFGF in the neurons. In this study, we show that TGF beta is expressed in situ by adult auditory neurons in response to traumatic injury (i.e. transection of the eighth cranial nerve). Based on these in vivo results and on the results from our previous in vitro studies, we propose that TFG beta 1 acts as an early autocrine signal involved in the response to injury by neurons of the peripheral auditor system. [less ▲]

Detailed reference viewed: 20 (1 ULg)
Peer Reviewed
See detailMécanismes de communication cellulaire dans le système nerveux périphérique en régénération
Leprince, Pierre ULg; Delree, P.; Rogister, Bernard ULg et al

in Revue Médicale de Liège (1992), 47(3), 115-8

Detailed reference viewed: 45 (3 ULg)
Peer Reviewed
See detailPeripheral and central target-derived trophic factor(s) effects on auditory neurons.
Lefèbvre, Philippe ULg; Weber, T.; Rigo, J. et al

in Hearing Research (1992), 58(2), 185-92

In the developing inner ear, a naturally occurring programmed cell death of cochleovestibular ganglion (CVG) neurons as well as peripheral and central target-derived trophic effects on survival of ... [more ▼]

In the developing inner ear, a naturally occurring programmed cell death of cochleovestibular ganglion (CVG) neurons as well as peripheral and central target-derived trophic effects on survival of embryonic CVG neurons are known. To further analyze these target derived trophic interactions, spiral ganglion explants obtained from 5 day postpartum (P5) rat pups were cultured with an intact organ of Corti and in the absence of Corti's organ. Both neuronal survival and neurite extension were influenced by the presence of this peripheral target tissue. Local destruction of Corti's organ caused both neuritic retraction and neuronal cell death to occur in a corresponding portion of the spiral ganglion. This peripheral target-derived neurotrophic effect may be mediated by a diffusible factor(s) since organ of Corti conditioned medium also had a neurotrophic effect on the survival of auditory neurons in cell cultures of dissociated spiral ganglia from P5 rat pups. A component of central target tissue, i.e. astrocytes, was also shown to release a diffusible factor(s) that supported the survival of dissociated P5 rat spiral ganglion neurons. The neurotrophic effects on the in vitro survival of spiral ganglion neurons by both of these conditioned medium factors were concentration dependent. [less ▲]

Detailed reference viewed: 11 (1 ULg)
Peer Reviewed
See detailNerve growth factor stimulates neurite regeneration but not survival of adult auditory neurons in vitro.
Lefèbvre, Philippe ULg; Van de Water, T. R.; Staecker, H. et al

in Acta Oto-Laryngologica (1992), 112(2), 288-93

Injury to either the peripheral or central nervous system results in the accumulation of growth factors at the wound site. Some of these growth factors have been shown to participate in the neural repair ... [more ▼]

Injury to either the peripheral or central nervous system results in the accumulation of growth factors at the wound site. Some of these growth factors have been shown to participate in the neural repair process. Adult auditory neurons grown in dissociated spiral ganglion cell cultures are injured (i.e. bilateral axotomy) as a result of the initial preparation of these cultures. Therefore, cell cultures of dissociated spiral ganglia provide a model for the study of repair processes of adult auditory neurons (e.g. effects of exogenous growth factors on the process of neuritogenesis by injured neurons). Auditory neurons do not survive in these dissociated ganglion cell cultures when only exogenous NGF is added to the defined culture medium. Previous work has identified substrate bound basic fibroblast growth factor (bFGF) as a survival factor for adult auditory neurons in vitro. Auditory neurons cultured on substrate bound bFGF also do not show increased survival in response to the addition of increasing concentrations of nerve growth factor (NGF) to the defined medium. This is in sharp contrast to the pronounced neurite outgrowth-promoting effects (concentration dependent) observed when exogenous NGF is added to adult auditory neurons cultured on substrate bound bFGF. We propose that several neuronotrophic factors (e.g. TGFB1, bFGF, NGF and other neurotrophins) are active in the spiral ganglions' response to injury. Several of these growth factors (i.e. bFGF, NGF) act in cooperation to promote the regeneration or repair of severed or traumatized neuritic processes. [less ▲]

Detailed reference viewed: 13 (1 ULg)
See detailThree-dimensional organ culture systems
Rogister, Bernard ULg; Rigo, Jean-Michel; Lefebvre, Philippe ULg et al

in Boulton, Alan; Baker, Glen; Walz, Wolfgang (Eds.) Practical Cell Culture Techniques (1992)

Detailed reference viewed: 23 (13 ULg)
Full Text
Peer Reviewed
See detailMri-Pathological Correlations in Acute Traumatic Central Cord Syndrome: Case Report
Martin, Didier ULg; Schoenen, Jean ULg; Lenelle, Jacques ULg et al

in Neuroradiology (1992), 34(4), 262-6

Ante- and post-mortem MRI and detailed pathological examination were performed in a patient with a typical acute traumatic central cord syndrome (ATCCS) after a minor hyperextension injury to the neck who ... [more ▼]

Ante- and post-mortem MRI and detailed pathological examination were performed in a patient with a typical acute traumatic central cord syndrome (ATCCS) after a minor hyperextension injury to the neck who died 60 h later from heart failure. T2-weighted MRI showed a central hyperintense area at C3-4. There were disc protrusions, but no vertebral fracture or displacement. Histopathology disclosed severe axonal swelling and oedema in the dorsolateral fasciculi and, to a lesser degree, in the dorsal columns. In addition, an area of recent necrosis was found in the right anterior horn at C4-5. These findings suggest that the pathological hallmark of typical ATCCS is mechanical axonal disruption at a segmental level, but that more severe trauma may be accompanied by tissue destruction. [less ▲]

Detailed reference viewed: 24 (2 ULg)
See detailMicroexplants cultures of the cerebellum
Rogister, Bernard ULg; Moonen, Gustave ULg

in Fedoroff, Serguei; Richardson, Anne (Eds.) Protocols for Neural cells Cultures (1992)

Detailed reference viewed: 10 (0 ULg)