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See detailHypopituitarism in pituitary gigantism (results of an international study)
Rostomyan, Liliya ULg; Daly, Adrian ULg; Shah, NS et al

in The 3rd ENEA Workshop : Hypopituitarism - Abstract book (2013, December)

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See detailHypopituitarisme consécutif aux atteintes cérébrales: le traumatisme cranien et l'hémorragie sous-arachnoidienne mis en cause.
Valdes Socin, Hernan Gonzalo ULg; Vroonen, Laurent ULg; Robe, Pierre ULg et al

in Revue Médicale de Liège (2009), 64(9), 457-463

Brain injuries namely traumatic brain injuries (TBI) and subarachnoid haemorrhage (SAH) are relevant causes of acquired adult hypopituitarism, perhaps more prevalent than ever believed. TBI represent a ... [more ▼]

Brain injuries namely traumatic brain injuries (TBI) and subarachnoid haemorrhage (SAH) are relevant causes of acquired adult hypopituitarism, perhaps more prevalent than ever believed. TBI represent a major health problem with an annual incidence of 300 cases per 100.000. SAH affects six new cases per 1.000.000 habitants in USA. In Belgium we estimate nearly 30.000 new TBI cases and 600 SAH cases per year. In the English literature, TBI secondary hypopituitarism has been well documented in 14 retrospective and prospective series accounting for 1.077 cases. In all these series the main pituitary deficits were: GH (14%), ACTH (14%), gonadotrope (18%), TSH (7%) and diabetes insipidus (4%). SAH was documented as a cause of hypopituitarism in three retrospective series accounting for 110 cases and in one prospective series. In all these series main pituitary deficits were GH (25%), ACTH (15%), gonadotrope (8.5%), TSH (6%) and diabetes insipidus (4%). In this review, we analyze recent data and discuss diagnostic and treatment features of secondary hypopituitarism due TBI and SAH. [less ▲]

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See detailHyporeactivity of Alveolar Macrophages and Higher Respiratory Cell Permissivity Characterize DBA/2J Mice Infected by Influenza A Virus Hyporeactivity of Alveolar Macrophages and Higher Respiratory Cell Permissivity Characterize DBA/2J Mice Infected by Influenza A Virus.
Casanova Bustos, Tomas Ronaldo ULg; Van de Paar, Els; Desmecht, Daniel ULg et al

in JOURNAL OF INTERFERON & CYTOKINE RESEARCH (2015), 35(10), 808-820

Influenza A virus remains a major public health problem. Mouse models have been widely used to study influenza infection in mammals. DBA/2J and C57BL/6J represent extremes in terms of susceptibility to ... [more ▼]

Influenza A virus remains a major public health problem. Mouse models have been widely used to study influenza infection in mammals. DBA/2J and C57BL/6J represent extremes in terms of susceptibility to influenza A infection among inbred laboratory mouse strains. Several studies focused specifically on the factors responsible for the susceptibility of DBA/2J or the resistance of C57BL/6J and resulted in impressive lists of candidate genes or factors over- or underexpressed in one of the strains. We adopted a different phenotypical approach to identify the critical steps of the infection process accounting for the differences between DBA/2J and C57BL/6J strains. We concluded that both a dysfunction of alveolar macrophages and an increased permissivity of respiratory cells rendered DBA/2J more susceptible to influenza infection. [less ▲]

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See detailHypotension du grand prematuré
Rigo, Vincent ULg; Beauduin, Philippe; Rigo, Jacques ULg

in Revue Médicale de Liège (2007), 62(2), 86-93

One out of four very preterm infants will present with circulatory maladaptation during the first two days of life, with an increased risk of early complications and long term sequelae. Appreciation of ... [more ▼]

One out of four very preterm infants will present with circulatory maladaptation during the first two days of life, with an increased risk of early complications and long term sequelae. Appreciation of those transitional difficulties cannot be limited to blood pressure. Assesment of blood pressure itself must be done in relation with gestational age and birth weight adapted norms. The effects of therapies for low systemic blood flow on blood pressure, organs and cerebral circulations are better understood, but none of them has assessed for mortality or neurodevelopmental outcomes. [less ▲]

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See detailL'Hypotension orthostatique: 1ere partie: definition, symptomatologie, evaluation et physiopathologie.
Tyberghein, Maelle; PHILIPS, Jean-Christophe ULg; Krzesinski, Jean-Marie ULg et al

in Revue Médicale de Liège (2013), 68(2), 65-73

Orthostatic hypotension (OH) is defined by a drop in arterial blood pressure (BP) of at least 20 mmHg for systolic BP and 10 mmHg for diastolic BP after standing. Symptoms are generally quite typical, but ... [more ▼]

Orthostatic hypotension (OH) is defined by a drop in arterial blood pressure (BP) of at least 20 mmHg for systolic BP and 10 mmHg for diastolic BP after standing. Symptoms are generally quite typical, but may also be rather vague. Diagnosis may be easily made by the physician in his/ her office, and confirmed, if necessary, by more sophisticated measurements. Pathophysiology is generally rather complex, but mostly involves a defect in the autonomic nervous system, in its sympathetic component. Failure of peripheral vasoconstriction seems to play a more important role than the defect in reflex tachycardia. Causes of OH are multiples. OH may occur in healthy subjects, when exposed to exceptional circumstances, but is more generally associated with various diseases, either neurological disorders or pathologies characterized by hypovolemia. Medications can also aggravate the risk of OH, among which some antihypertensive or psychotropic agents. Elderly people, especially frailty subjects, are exposed to a high risk of OH, whose origin is often multifactorial, and this complication may have serious medical consequences. [less ▲]

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See detailL'hypotension orthostatique: 2eme partie. Epidemiologie, complications et traitements.
Tyberghein, M.; Philips, J.-C.; Krzesinski, Jean-Marie ULg et al

in Revue Médicale de Liège (2013), 68(4), 163-70

Orthostatic hypotension (OH) is a rather common phenomenon in clinical practice. It may occur in 5-10 % of normal individuals, but its prevalence increases with age and various pathologies, so that it may ... [more ▼]

Orthostatic hypotension (OH) is a rather common phenomenon in clinical practice. It may occur in 5-10 % of normal individuals, but its prevalence increases with age and various pathologies, so that it may rise above 35 % in certain subgroups of patients. OH is associated with various comorbidities, in particular cardio-cerebro-vascular accidents and falls (especially in the elderly), and may even increase mortality. It is, however, difficult to determine whether OH is simply a marker of frailty or whether it is really a risk factor. OH treatment involves physical manoeuvres or medications, which aim at inducing a peripheral vasoconstriction (midodrine, etilefrine) or an increase of circulating blood volume (9-alpha-fluohydrocortisone). However, their use should be cautious, because of a risk of arterial hypertension in supine position. [less ▲]

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See detailHypothalamic AMPKalpha1 and neuropeptides are involved in neonatal performance of broiler chicks hatched at different times
Wang, Y.; Koppenol, A.; Lesuisse, J. et al

Conference (2014)

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See detailHypothalamic and Thyroidal Regulation of Growth Hormone in Tilapia
Melamed, P. M.; Eliahu, N. A.; Levavi-Sivan, Berta et al

in General and Comparative Endocrinology (1995), 97

A radioimmunoassay (RIA) for recombinant tilapia growth hormone (GH) was established and validated. The ability of various hypothalamic factors to regulate GH secretion in the tilapia hybrid (Oreochromis ... [more ▼]

A radioimmunoassay (RIA) for recombinant tilapia growth hormone (GH) was established and validated. The ability of various hypothalamic factors to regulate GH secretion in the tilapia hybrid (Oreochromis niloticus x Oreochromis aureus) was studied. Somatostatin1-14 (SRIF1-14; 10-100 micrograms/kg) was found to reduce circulating GH levels in a dose-dependent manner. SRIF1-14 (0.1-1000 nM) inhibited GH release from perifused pituitary fragments (ED50 0.83 nM). Human growth hormone-releasing hormone fragment 1-29 (hGHRH1-29; 100 micrograms/kg) doubled circulating GH levels and modestly stimulated GH secretion in vitro. Carp growth hormone-releasing hormone (cGHRH) stimulated GH secretion in vitro to a similar degree at the same dose (1 microM). Injection of salmon gonadotropin-releasing hormone (sGnRH) superactive analog (10-100 micrograms/kg) increased plasma GH levels sixfold. sGnRH also stimulated GH release in vitro (ED50 142.56 nM). Dopamine (0.1-10 microM) and the D1 DA receptor agonist SKF 38393 increased GH secretion from perifused pituitary fragments dose-relatedly. Thyrotropin-releasing hormone (TRH) had no effect on GH secretion from perifused pituitary fragments, but increased plasma GH levels, as did bovine thyroid stimulating hormone (bTSH). The increased plasma GH in the bTSH-treated fish coincided with a dramatic increase in T4; however, TRH increased GH without changing T4 levels. T3 increased the synthesis of GH by isolated pituitaries (incorporation of [3H]leucine). SRIF1-14 seems to be a most potent hypothalamic regulator of GH secretion in tilapia; sGnRH and DA both increased GH secretion, although sGnRH elicited considerably greater responses at lower doses. Two forms of GHRH increased GH levels, although the unavailability of the homologous peptide prevented an accurate evaluation of its importance in regulating GH secretion. The thyroid axis (TRH, TSH, and T3) stimulates both synthesis and release of GH, although TRH did not appear to have a direct effect on the level of the pituitary. [less ▲]

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See detailHypothalamic cushing's disease.
Beckers, Albert ULg; Stevenaert, Achille ULg; Hennen, Georges ULg

Conference (1987)

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See detailHypothalamic Expression Of Oestrogen Receptor Alpha And Androgen Receptor Is Sex, Age And Region Dependent In Mice.
Brock, Olivier; Mees, Christelle De; Bakker, Julie ULg

in Journal of neuroendocrinology (2015)

Sex steroid hormones act on developing neural circuits regulating the hypothalamic-pituitary-gonadal axis and are involved in hormone-sensitive behaviours. These hormones act mainly via nuclear receptors ... [more ▼]

Sex steroid hormones act on developing neural circuits regulating the hypothalamic-pituitary-gonadal axis and are involved in hormone-sensitive behaviours. These hormones act mainly via nuclear receptors, i.e. oestrogen receptor-alpha (ERalpha) and androgen receptor (AR). By using immunohistochemistry, we analysed the expression level of ERalpha and AR throughout perinatal life [at embryonic (E) day 19 and postnatal (P) days 5-15-25] and in adulthood in several hypothalamic nuclei controlling reproduction in both wild-type (WT) and aromatase knockout (ArKO) (which cannot convert testosterone into oestradiol) mice to determine whether there are sex differences in hypothalamic ERalpha and AR expression and if so, whether these are established by oestradiol action. As early as E19, ERalpha immunoreactivity (-ir) was observed at same expression levels in both sexes in the anteroventral periventricular nucleus (AVPv), the medial preoptic area (MPOA), the bed nucleus of the stria terminalis (BnST), the ventrolateral part of the ventromedial hypothalamic nucleus (VMHvl) and the arcuate nucleus (ARC). Sex differences (female > male) in ERalpha-ir were only observed during the prepubertal period in the BnST (P5 to P25) and the MPOA (P15), but also in adulthood in these two brain regions. Sex differences in AR-ir (male > female) were observed at P5 in the AVPv and ARC, and at P25 in the MPOA and ARC as well as in adulthood in all hypothalamic regions analysed. In adulthood, gonadectomy and hormonal treatment (oestradiol or dihydrotestosterone) also strongly modulated ERalpha-ir and AR, respectively. Taken together, sex differences in ERalpha-ir and AR-ir were observed in all hypothalamic regions analysed, but most likely do not reflect oestradiol actions since ArKO mice of both sexes showed very similar expression levels as WT mice throughout perinatal development. This article is protected by copyright. All rights reserved. [less ▲]

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See detailHypothalamic response to the chemo-signal androstadienone in gender dysphoric children and adolescents.
Burke, Sarah M.; Cohen-Kettenis, Peggy T.; Veltman, Dick J. et al

in Frontiers in endocrinology (2014), 5

The odorous steroid androstadienone, a putative male chemo-signal, was previously reported to evoke sex differences in hypothalamic activation in adult heterosexual men and women. In order to investigate ... [more ▼]

The odorous steroid androstadienone, a putative male chemo-signal, was previously reported to evoke sex differences in hypothalamic activation in adult heterosexual men and women. In order to investigate whether puberty modulated this sex difference in response to androstadienone, we measured the hypothalamic responsiveness to this chemo-signal in 39 pre-pubertal and 41 adolescent boys and girls by means of functional magnetic resonance imaging. We then investigated whether 36 pre-pubertal children and 38 adolescents diagnosed with gender dysphoria (GD; DSM-5) exhibited sex-atypical (in accordance with their experienced gender), rather than sex-typical (in accordance with their natal sex) hypothalamic activations during olfactory stimulation with androstadienone. We found that the sex difference in responsiveness to androstadienone was already present in pre-pubertal control children and thus likely developed during early perinatal development instead of during sexual maturation. Adolescent girls and boys with GD both responded remarkably like their experienced gender, thus sex-atypical. In contrast, pre-pubertal girls with GD showed neither a typically male nor female hypothalamic activation pattern and pre-pubertal boys with GD had hypothalamic activations in response to androstadienone that were similar to control boys, thus sex-typical. We present here a unique data set of boys and girls diagnosed with GD at two different developmental stages, showing that these children possess certain sex-atypical functional brain characteristics and may have undergone atypical sexual differentiation of the brain. [less ▲]

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See detailHypothalamic stimulation in chronic cluster headache: a pilot study of efficacy and mode of action
SCHOENEN, Jean ULg; Di Clemente, L.; Vandenheede, Michel et al

in Brain (2005), 128(Pt 4), 940-947

We enrolled six patients suffering from refractory chronic cluster headache in a pilot trial of neurostimulation of the ipsilateral ventroposterior hypothalamus using the stereotactic coordinates ... [more ▼]

We enrolled six patients suffering from refractory chronic cluster headache in a pilot trial of neurostimulation of the ipsilateral ventroposterior hypothalamus using the stereotactic coordinates published previously. After the varying durations needed to determine optimal stimulation parameters and a mean follow-up of 14.5 months, the clinical outcome is excellent in three patients (two are pain-free; one has fewer than three attacks per month), but unsatisfactory in one patient, who only has had transient remissions. Mean voltage is 3.28 V, diplopia being the major factor limiting its increase. When the stimulator was switched off in one pain-free patient, attacks resumed after 3 months until it was turned on again. In one patient the implantation procedure had to be interrupted because of a panic attack with autonomic disturbances. Another patient died from an intracerebral haemorrhage that developed along the lead tract several hours after surgery; there were no other vascular changes on post-mortem examination. After 1 month, the hypothalamic stimulation induced resistance against the attack-triggering agent nitroglycerin and tended to increase pain thresholds at extracephalic, but not at cephalic, sites. It had no detectable effect on neurohypophyseal hormones or melatonin excretion. We conclude that hypothalamic stimulation has remarkable efficacy in most, but not all, patients with treatment-resistant chronic cluster headache. Its efficacy is not due to a simple analgesic effect or to hormonal changes. Intracerebral haemorrhage cannot be neglected in the risk evaluation of the procedure. Whether it might be more prevalent than in deep-brain stimulation for movement disorders remains to be determined. [less ▲]

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See detailHypothalamic stimulation in chronic cluster headache: a pilot study of efficacy and mode of action
Schoenen, Jean ULg; Di Clemente, L.; Vandenheede, Michel et al

in Cephalalgia : An International Journal of Headache (2006, November), 26(11), 1352

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See detailHypothalamus, brain & GPR-101
JEDIDI, Haroun ULg

Conference (2015, July)

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See detailHypothecair krediet - Crédit hypothécaire
Biquet, Christine ULg; Terryn, Evelyne

Book published by Die Keure (2010)

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See detailLes hypothèques - droits et obligations du Receveur
Bruyère, Eric ULg

Scientific conference (2004, June 17)

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See detailL’hypothermie induite dans l'encéphalopathie anoxo-ischémique du nouveau-né
BARREA, Christophe ULg; Seghaye, Marie-Christine ULg; Battisti, Oreste ULg

in Percentile (2014)

physiopathologie de l'asphyxie à terme et logique des traitements par hypothermie.

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See detailL'hypothèse d'équivalence entre impôt et emprunt: un test sur les pays de l'O.C.D.E.
Kessler, Denis; Pestieau, Pierre ULg; Perelman, Sergio ULg

in Annales d'Economie et de Statistique (1986), (2), 141-149

Dans cet article, nous présentons d'abord une brève synthèse du débat théorique sur une éventuelle équivalence entre impôt et emprunt. Il apparaît que l'issue du débat dépend surtout de la manière dont ... [more ▼]

Dans cet article, nous présentons d'abord une brève synthèse du débat théorique sur une éventuelle équivalence entre impôt et emprunt. Il apparaît que l'issue du débat dépend surtout de la manière dont est envisagé le comportement des individus à l'égard de leur environnment économique et de la politique fiscale adoptée par les Pouvoirs Publics. Dans une seconde section, nous présentons un nouveau test empirirque qui porte sur une vingtaine de pays de l'OCDE pendant les années 1961-1983. Il ressort des diverses estimations que l'hypothèse d'équivalence n'est pas vérifiée. [less ▲]

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See detailHypothèse d'un élément de force majeure invoqué après la rupture du contrat de travail
Mortier, Aurélie ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2010), (31),

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See detailL’hypothèse d’une Pax Persiana. L’Iran et ses rapports avec l’Occident des années 1850 à 2016
Genin, Vincent ULg

Conference given outside the academic context (2016)

Detailed reference viewed: 28 (2 ULg)