References of "Schoenen, Jean"
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See detailMultiple Clinical and Paraclinical Analyses of Chronic Tension-Type Headache Associated or Unassociated with Disorder of Pericranial Muscles
Schoenen, Jean ULg; Gérard, P.; De Pasqua, Victor ULg et al

in Cephalalgia : An International Journal of Headache (1991), 11(3), 135-9

Thirty-two female patients fulfilling the diagnostic criteria of chronic tension-type headache underwent multiple clinical (severity index before and after biofeedback therapy; anxiety score) and ... [more ▼]

Thirty-two female patients fulfilling the diagnostic criteria of chronic tension-type headache underwent multiple clinical (severity index before and after biofeedback therapy; anxiety score) and paraclinical (pericranial EMG levels and pressure-pain thresholds, temporalis exteroceptive silent period) assessments. Twenty-three patients (72%) had at least one increased EMG level and/or at least one decreased pain threshold and qualified for the subgroup" associated with disorder of pericranial muscles" (code 2.2.1). Nine patients (28%) were within the normal range for both investigations and would have been classified in the subgroup "unassociated with such disorder" (code 2.2.2). No significant differences were found between these two groups of patients for headache severity, anxiety, response to biofeedback therapy or duration of temporalis second exteroceptive silent period. The various clinical and paraclinical parameters were not significantly correlated to each other. It is therefore suggested that the subdivision of chronic tension-type headache in two subgroups based on pericranial EMG levels and/or pain sensitivity might be artificial. Since both of the latter and temporalis silent periods vary independently, they appear complementary in the study of tension-type headache patients and probably represent peripheral abnormalities, which are induced to varying intensities by a common central nervous system dysfunction. [less ▲]

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See detailBlood Magnesium Levels in Migraine
Schoenen, Jean ULg; Sianard-Gainko, J.; Lenaerts, M.

in Cephalalgia : An International Journal of Headache (1991), 11(2), 97-9

Serum and erythrocyte magnesium levels were screened between attacks in patients with migraine without aura (n = 38) and with aura (n = 6), and for comparison in a group of patients suffering from chronic ... [more ▼]

Serum and erythrocyte magnesium levels were screened between attacks in patients with migraine without aura (n = 38) and with aura (n = 6), and for comparison in a group of patients suffering from chronic tension-type headache (n = 25) as well as a group of neurological, non-headache patients (n = 19). Serum magnesium levels were not significantly different between the four groups of patients. In contrast, magnesium in erythrocytes was on average significantly reduced in patients with migraine without aura compared to the other groups. It is hypothesized that this reduction might be due to an abnormal regulation of intracellular magnesium possibly reflecting at the periphery changes observed in the brain of migraineurs. [less ▲]

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See detailEmg Activity in Pericranial Muscles During Postural Variation and Mental Activity in Healthy Volunteers and Patients with Chronic Tension Type Headache
Schoenen, Jean ULg; Gérard, P.; De Pasqua, Victor ULg et al

in Headache (1991), 31(5), 321-4

EMG activity was recorded over frontalis, temporalis and trapezius muscles in a supine position, a standing position and during a mental task in 32 female patients suffering from chronic tension-type ... [more ▼]

EMG activity was recorded over frontalis, temporalis and trapezius muscles in a supine position, a standing position and during a mental task in 32 female patients suffering from chronic tension-type headache and in 20 healthy volunteers. Measurements in patients were made before and after biofeedback therapy. All EMG levels were on average significantly higher in patients than in controls. 62.5% of patients had at least one abnormal EMG level, but only 34% were beyond the normal range, if 1 muscle and 1 recording condition was considered. EMG levels were not correlated with headache severity, anxiety or response to biofeedback treatment. It is therefore suggested that pericranial EMG activity is not pathogenetic in chronic tension type headache, but merely one of several pathophysiologic changes, that are produced by a central dysfunction. [less ▲]

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See detailExteroceptive Silent Period of Temporalis Muscle in Menstrual Headaches
Schoenen, Jean ULg; Bottin, D.; Sulon, J. et al

in Cephalalgia : An International Journal of Headache (1991), 11(2), 87-91

The second exteroceptive silent period (ES2) of temporalis muscle was recorded on days 1 and 15 of the menstrual cycle in 17 women, 9 of whom suffered regularly from tension-type headaches during ... [more ▼]

The second exteroceptive silent period (ES2) of temporalis muscle was recorded on days 1 and 15 of the menstrual cycle in 17 women, 9 of whom suffered regularly from tension-type headaches during menstruation. Mean duration of temporalis ES2 was significantly shorter on day 1 of the cycle than on day 15. This difference was due to a marked menstrual reduction of ES2 in the headache subgroup. A positive correlation was found between ES2 durations and oestradiol/progesterone ratios. We hypothesize that the variations of ES2 during the ovarian cycle result from the modulatory effects of oestrogens on descending aminergic pathways that control excitability of inhibitory brainstem interneurons mediating exteroceptive suppression of jaw-closing motoneurons. [less ▲]

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See detailGrafts of Syngenic Cultured, Adult Dorsal Root Ganglion-Derived Schwann Cells to the Injured Spinal Cord of Adult Rats: Preliminary Morphological Studies
Martin, Didier ULg; Schoenen, Jean ULg; Delree, P. et al

in Neuroscience Letters (1991), 124(1), 44-8

Highly enriched cultures of Schwann cells were obtained from adult rat dorsal root ganglia and implanted (5 x 10(5) -9 x 10(5) cells) in the spinal cord of syngenic adult rats at the site of an acute ... [more ▼]

Highly enriched cultures of Schwann cells were obtained from adult rat dorsal root ganglia and implanted (5 x 10(5) -9 x 10(5) cells) in the spinal cord of syngenic adult rats at the site of an acute compression lesion produced by a subdural inflatable microballoon. These autografts survived and invaded the host tissue, reducing central cavitation and astrocytic gliosis. They dramatically promoted ingrowth of axons, the majority of which appeared to come from the dorsal roots as judged by their neuropeptide content. Invasion of the transplants by descending, e.g. aminergic fibers, was negligible at survival times of up to 4 months. Nonetheless, autologous Schwann cells, which are readily available in the host, represent a promising material for grafts into the injured spinal cord. [less ▲]

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See detailColocalization of immunoreactive oxytocin, vasopressin and interleukin-1 in human thymic epithelial neuroendocrine cells
Robert, Françoise; Geenen, Vincent ULg; Schoenen, Jean ULg et al

in Brain, Behavior & Immunity (1991), 5

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See detailMonoclonal antibodies to oxytocin: production and characterization
Burgeon, Emmanuel; Chapleur, Michèle; Schoenen, Jean ULg et al

in Journal of Neuroimmunology (1991), 31

To induce a good immune response to oxytocin (OT) we developed a two-step technique to conjugate OT to thyroglobulin (TG) using glutaraldehyde. We obtained 30 hybridomas recognizing OT-ovalbumin ... [more ▼]

To induce a good immune response to oxytocin (OT) we developed a two-step technique to conjugate OT to thyroglobulin (TG) using glutaraldehyde. We obtained 30 hybridomas recognizing OT-ovalbumin conjugates and 16 stable lines. Three monoclonal antibodies were selected for further characterization. One of them (O13) was found to be very specific for OT using three different techniques (EIA, RIA and ICC); it si directed to the C-terminal tripeptide. The other two probably recongize tyrosine-containing epitope(s) also shared by vasopressin and other related nonapeptides. [less ▲]

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See detailCephalic and extracephalic pressure pain thresholds in chronic tension-type headache.
Schoenen, Jean ULg; Bottin, D.; Hardy, F. et al

in Pain (1991), 47(2), 145-9

Pressure pain thresholds were assessed with an algometer (Somedic Inc.), over the forehead, temple and suboccipital region as well as over the Achilles tendon. A group of 32 patients suffering from ... [more ▼]

Pressure pain thresholds were assessed with an algometer (Somedic Inc.), over the forehead, temple and suboccipital region as well as over the Achilles tendon. A group of 32 patients suffering from chronic tension-type headache was compared to 20 healthy controls and to 10 migraineurs without aura. Although individual values were widely scattered, pressure pain thresholds were on average significantly lower in chronic tension-type headache, not only at pericranial sites but also over the Achilles tendon. Only 50% of these patients had one or more pericranial thresholds 1.5 S.D. below the mean of controls. After muscular biofeedback therapy, all pain thresholds were on average increased. Along with results obtained previously, the present data support the hypothesis that diffuse disruption of central pain-modulating systems, possibly due to a modified limbic input to the brain-stem, is pivotal in the pathophysiology of chronic tension-type headache. [less ▲]

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See detailChemical anatomy of the spinal cord
Schoenen, Jean ULg

in Neurologic Clinics (1991), 9

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See detailSpinal Cord
Schoenen, Jean ULg

in Dulbecco, R. (Ed.) Encyclopedia of Human Biology (1991)

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See detailChronic tension-type headache: a multifactorial analysis suggesting disturbance of "limbic pathways" to the brain stem
Schoenen, Jean ULg; Bottin, D.; Juprelle, M. et al

in Clifford Rose, F. (Ed.) New Advances in Headache Research (1991)

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See detailNeuronotrophic factors involvement in the regeneration of adult afferent auditory neurons.
Lefebvre, P.; Weber, T.; Delrée, P. et al

Conference (1990, November 10)

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See detailEffets de facteurs neuronotrophiques sur la régénération des neurones auditifs adultes in vitro
Lefebvre, Philippe ULg; Weber, T.; Delrée, P. et al

Conference (1990, November)

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See detailContingent Negative Variation in Migraine
Bocker, K. B.; Timsit-Berthier, M.; Schoenen, Jean ULg et al

in Headache (1990), 30(9), 604-9

The Contingent Negative Variation (CNV) is an event-related slow potential. It was recorded in healthy volunteers (n = 8) and in patients suffering from migraine without (n = 12) or with (n = 5) aura ... [more ▼]

The Contingent Negative Variation (CNV) is an event-related slow potential. It was recorded in healthy volunteers (n = 8) and in patients suffering from migraine without (n = 12) or with (n = 5) aura, during one (CNV1) and three second (CNV3) foreperiods in a forewarned reaction time task. CNV1 was recorded at the vertex while CNV3 was recorded at multiple electrode sites to assess topographical differences. Seven out of twelve migraine patients without aura had increased CNV1 amplitudes. CNV3 amplitudes were increased as well, but only at electrode positions C3 and C4 and not at Fz. CNV3, which allows for analysis of both an early and a late CNV component, could improve the discrimination of migraine without aura beyond that of CNV1. In migraine with aura all CNV parameters were at control levels, confirming previous results. The data obtained are discussed in terms of arousal, activation and stress and the "biobehavioral model of migraine" (Welch, 1986). [less ▲]

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See detailExperimental modulation of neurotransmitter phenotype in adult dorsal root ganglion neurons.
Schoenen, Jean ULg; Delrée, P.; Jammaer, R. et al

Conference (1990, June 30)

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See detailIn vitro and in vivo modulation of neurotransmitter phenotype in adult dorsal root ganglion neurons.
Schoenen, Jean ULg; Delrée, P.; Jammaer, R. et al

Conference (1990, June 16)

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