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Peer Reviewed
See detailDoppler echocardiographic features in an acute crisis of chronic obstructive pulmonary (COPD) in horses
Amory, Hélène ULg; Brihoum, M; Christmann, U et al

in Proceedings of the 39th Annual Congress of the British Equine Veterinary Association (BEVA) (2000)

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See detailDoppler Echocardiographic follow up of three horses with congestive heart failure and treated with quinapril, digoxin, and diuretics
Leroux, Aurélia ULg; Sandersen, Charlotte ULg; Borde, Laura ULg et al

Poster (2011, February)

Angiotensin converting enzyme inhibitors are recommended therapy in human and canine patients with congestive heart failure (CHF), but little is known concerning their efficiency to treat horses with CHF ... [more ▼]

Angiotensin converting enzyme inhibitors are recommended therapy in human and canine patients with congestive heart failure (CHF), but little is known concerning their efficiency to treat horses with CHF. Enalapril has been shown to be poorly absorbed in horses and quinapril has been shown to decrease the severity of the insufficiency and to increase the stroke volume (SV) and the cardiac output (CO) in horses with mitral regurgitation (MR) without signs of CHF. The objective of this cases report was to evaluate the effect of quinapril associated with routine treatment in horses with CHF. Three horses with clinical, echocardiographic and electrocardiographic signs of severe MR, CHF and secondary atrial fibrillation were studied (Fig 1 to 3). None of them had been previously treated for those problems. According to the ACVIM classification system for management of canine CHF, they were therefore classified in class C. They were treated with quinapril 0.2mg/kg SID PO, digoxin 0.011mg/kg BID PO, and furosemide 1mg/kg BID IM. Standard echocardiographic and Doppler measurements were performed before treatment (T0), and 1 and 4 weeks after starting treatment (W1 and W4, respectively). All horses showed a transient clinical improvement (decrease of edemas and disappearance of the dyspnea) after 1 week of treatment, but clinical signs deteriorated within the following weeks in 2 horses that were euthanized for ethical reasons. The third horse kept a steady clinical status and was discharged with the treatment pursued at home. Evolution (in %) of main echocardiographic parameters at W1 and W4 compared to T0 values are showed in Table1. Large individual variations in response to the treatment were seen. Nevertheless, in all horses, a decrease of the Heart Rate (HR) was observed after 1 week of treatment, but the HR increased again after 1 month of treatment (Fig 4). On the contrary, no increase in SV or CO, and no decrease in LVIDd were seen in response to treatment (Fig 5). In the 2 horses that were euthanized, the fractional shortening (FS) and the pre-ejection to ejection time ratio (PEP/ET) decreased and the mitral E peak velocity increased with treatment, whereas they followed the opposite evolution in the surviving horse. No conclusion can be drawn from this study because of the limited number of studied cases. However, it would be interesting to extend it to additional cases and to less severely affected cases (i.e. horses classified in class C after initial treatment or class B horses). Negative chronotropic effect of digoxin was suggested after 1 week of treatment since a decrease of the HR was observed in all horses. However, this effect seemed to decrease after 1 month of treatment. Those preliminary results of echocardiography suggest that quinapril in association with digoxin and furosemide at the used dosage could be inefficient to reduce the left ventricular filling pressure and to improve the myocardial contractility in horses with severe CHF. This could however be due to the fact that the 3 studied horses were cases refractory to classic treatment (thus to be classified in class D). [less ▲]

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See detailDoppler echocardiographic measurement of cardiac output in the calf: a preliminary study
Amory, Hélène ULg; Sandersen, Charlotte ULg; Brihoum, M et al

in Proceedings of the World Assoc. Buiatrics Congress (2000)

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See detailDoppler Echocardiographic Reference Values in Healthy Donkeys
Amory, Hélène ULg; Bertrand, P.; Delvaux, Véronique ULg et al

in Matthews, N. S.; Taylor, T. S. (Eds.) Veterinary Care of Donkeys (2004)

Detailed reference viewed: 48 (2 ULg)
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See detailDoppler echocardiographic repercussions of a 12 week treadmill training period in Standardbreds
Amory, Hélène ULg; De Moffarts, Brieuc; Art, Tatiana ULg et al

in 43rd Congress of the British Equine Veterinary Association (2004)

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See detailDoppler Echocardiographic Study of Left and Right Ventricular Function During Dobutamine Stress Testing in Conscious Healthy Dogs
Mc Entee, Kathleen ULg; Clercx, Cécile ULg; Amory, Hélène ULg et al

in American Journal of Veterinary Research (1999), 60(7), 865-71

OBJECTIVE: To evaluate left and right ventricular filling and ejection performances by use of Doppler echocardiography in healthy, conscious dogs submitted to dobutamine stress testing. ANIMALS: 10 ... [more ▼]

OBJECTIVE: To evaluate left and right ventricular filling and ejection performances by use of Doppler echocardiography in healthy, conscious dogs submitted to dobutamine stress testing. ANIMALS: 10 unsedated, healthy adult Beagles. PROCEDURE: Doppler echocardiography was performed during cardiac stress testing on each dog twice at 24-hour intervals. Dobutamine was infused in 10 micrograms/kg of body weight/min incremental dosages, from 12.5 to 42.5 micrograms/kg/min. Duration of each step was 15 minutes. Doppler measurements were recorded at baseline and at each stage of dobutamine infusion, whereas aortic diameter was measured at baseline and at peak dosage by use of two-dimensional echocardiography. RESULTS: Dobutamine infusion induced a significant increase in velocity time integrals and in peak flow velocities at the aortic, pulmonic, mitral, and tricuspid valves. Acceleration time-to-deceleration time ratio at the aortic wave also was increased significantly. On the other hand, ejection time, acceleration time, and deceleration time at the aortic and pulmonic valves and peak flow velocity of the E wave-to-peak flow velocity of the A wave ratio at the mitral and tricuspid valves decreased significantly during the test. The acceleration time-to-deceleration time ratio at the pulmonic wave was unchanged. A significant, progressive increase in cardiac index also was observed during dobutamine infusion, with a maximal increase of 104% from baseline. This was mediated initially by an increase in stroke index and, at higher dosages, by an increase in heart rate. CONCLUSIONS AND CLINICAL RELEVANCE: Doppler echocardiography performed during dobutamine stress testing may be a reliable method of assessing myocardial function in dogs with cardiovascular disease. [less ▲]

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See detailDoppler Profiles of Proton Auroral Emissions Derived From High Resolution FUV Spectra
Chua, D. H.; Dymond, K. F.; Budzien, S. A. et al

Conference (2002, December 01)

In this paper we present new FUV observations of Doppler-shifted Lyman-ë± emissions from proton aurorae obtained from the High-resolution Ionospheric and Thermospheric Spectrograph (HITS) aboard the ... [more ▼]

In this paper we present new FUV observations of Doppler-shifted Lyman-ë± emissions from proton aurorae obtained from the High-resolution Ionospheric and Thermospheric Spectrograph (HITS) aboard the Advanced Research and Global Observation Satellite (ARGOS). The Doppler profiles of the Lyman-ë± auroral emissions serve as proxies for the energy spectra of precipitating protons in the ionosphere. These observations remedy two previous shortcomings in proton aurora studies. There have been few spectral measurements of Doppler-shifted H/H[SUP]+[/SUP] emission profiles with which to validate existing models of proton flux transport in the ionosphere. Even fewer are spectral measurements of this kind over large spatial scales that would extend our understanding of proton aurora to a global level. The HITS instrument observes the Doppler shifted H Lyman-ë± emissions from proton precipitation at 0.5 Ì· resolution over the width of the auroral oval traversed by the ARGOS spacecraft. The measured Doppler spectra of proton emissions are then modeled using a Monte Carlo simulation of proton flux transport. The model parameters which include the incoming proton energy, pitch angle, and energy flux distributions are adjusted until the predicted Lyman-ë± Doppler profiles match the observations. This technique allows us to quantify the evolution of proton precipitation during varying levels of auroral activity with both spectral information and large-scale spatial coverage. We present our analysis of proton auroral observations for an isolated substorm event as an example. [less ▲]

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See detailDoppler ultrasonography and single-fiber laser Doppler flowmetry for measurement of hind limb blood flow in anesthetized horses
Raisis, Anthea L; Young, Lesley E; Taylor, Polly M et al

in American Journal of Veterinary Research (2000), 61(3), 286-290

OBJECTIVE: To use Doppler ultrasonography and single-fiber laser Doppler flowmetry (LDF) to evaluate blood flow in the dependent and nondependent hind limbs of anesthetized horses and to evaluate changes ... [more ▼]

OBJECTIVE: To use Doppler ultrasonography and single-fiber laser Doppler flowmetry (LDF) to evaluate blood flow in the dependent and nondependent hind limbs of anesthetized horses and to evaluate changes in femoral arterial blood flow and microvascular skeletal muscle perfusion in response to administration of phenylephrine hydrochloride or dobutamine hydrochloride. ANIMALS: 6 healthy adult horses. PROCEDURE: Horses were anesthetized and positioned in left lateral recumbency. Doppler ultrasonography was used to measure velocity and volumetric flow in the femoral vessels. Single-fiber LDF was used to measure relative microvascular perfusion at a single site in the semimembranosus muscles. Phenylephrine or dobutamine was then administered to decrease or increase femoral arterial blood flow, and changes in blood flow and microvascular perfusion were recorded. RESULTS: Administration of phenylephrine resulted in significant decreases in femoral arterial and venous blood flows and cardiac output and significant increases in mean aortic blood pressure, systemic vascular resistance, and PCV. Administration of dobutamine resulted in significant increases in femoral arterial blood flow, mean aortic blood pressure, and PCV. Significant changes in microvascular perfusion were not detected. CONCLUSION AND CLINICAL RELEVANCE: Results suggest that Doppler ultrasonography and single-fiber LDF can be used to study blood flows in the hind limbs of anesthetized horses. However, further studies are required to determine why changes in femoral arterial blood flows were not associated with changes in microvascular perfusion [less ▲]

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See detailDorian Cumps (red.), Enjeux et tendances de la littérature flamande. Speciaal nummer van Etudes Germaniques 61
Spinoy, Erik ULg

in Internationale Neerlandistiek (2009), 2(3), 87

This is a review of a conference book on recent Flemish literature.

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See detailDorothée Goffin à la recherche du bien-être intestinal
Dubuisson, Elise

in EOS le magazine des sciences (2010), 30(janvier/février 2011), 70-71

Article présentant les recherches effectuées par le Dr Dorothée Goffin dans le domaine des prébiotiques et en particulier des isomaltooligosaccharides

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See detailDorsal horn dendroarchitectonics in the human spinal cord
Schoenen, Jean ULg

in Brown, A. G.; Rethelyi (Eds.) Spinal Cord Sensation (1981)

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See detailThe dorsal root ganglia (DRG) cell population neurotransmitter phenotype and its modulation in vivo and in vitro
Schoenen, Jean ULg; Moonen, G.; Vanderhaeghen, J. J.

in Bignami, A.; Thomas, P. K. (Eds.) New Issues in Neurosciences Basic and Clinical Approches (1990)

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See detailUne dorsalgie malheureusement tenace
Malaise, Michel ULg; Kaye, Olivier; Radermecker, Maurice ULg et al

in Revue Médicale de Liège (2002), 57(5), 270-273

The etiological diagnosis of chronic thoracic pain is wide, from benign mechanical disorders to tumors. Reaching the exact diagnosis in often time consuming. Despite the availability of new techniques of ... [more ▼]

The etiological diagnosis of chronic thoracic pain is wide, from benign mechanical disorders to tumors. Reaching the exact diagnosis in often time consuming. Despite the availability of new techniques of imagery, a meticulous clinical history and physical examination remain mandatory. They will lead the exploration. Idiopathic intercostal neuralgia does not exist. [less ▲]

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See detailDorsomedial prefrontal metabolism and unawareness of current characteristics of personality traits in Alzheimer’s disease
Jedidi, Haroun ULg; Feyers, Dorothée ULg; Collette, Fabienne ULg et al

in Social Cognitive and Affective Neuroscience (2014)

Anosognosia is a complex symptom corresponding to a lack of awareness of one’s current clinical status. Anosognosia for cognitive deficits has frequently been described in Alzheimer’s disease (AD), while ... [more ▼]

Anosognosia is a complex symptom corresponding to a lack of awareness of one’s current clinical status. Anosognosia for cognitive deficits has frequently been described in Alzheimer’s disease (AD), while unawareness of current characteristics of personality traits has rarely been considered. We used a well-established questionnaire-based method in a group of 37 AD patients and in healthy controls to probe self- and hetero-evaluation of patients’ personality and we calculated differential scores between each participant’s and his/her relative’s judgments. A brain-behavior correlation was performed using FDG-PET images. The behavioral data showed that AD patients presented with anosognosia for current characteristics of their personality and their anosognosia was primarily explained by impaired third perspective taking. The brain-behavior correlation analysis revealed a negative relationship between anosognosia for current characteristics of personality and dorsomedial prefrontal cortex (dMPFC) activity. Behavioral and neuroimaging data are consistent with the view that impairment of different functions subserved by the dMPFC (self-evaluation, inferences regarding complex enduring dispositions of self and others, confrontation of perspectives in interpersonal scripts) plays a role in anosognosia for current characteristics of personality in AD patients. [less ▲]

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See detailA Dorsomedial Subdivision within the Nucleus Intercollicularis Identified in the Japanese Quail (Coturnix Coturnix Japonica) by Means of Alpha 2-Adrenergic Receptor Autoradiography and Estrogen Receptor Immunohistochemistry
Ball, G. F.; Foidart, Agnès ULg; Balthazart, Jacques ULg

in Cell & Tissue Research (1989), 257(1), 123-8

The nucleus intercollicularis is an important site in the control of vocalization in birds. In oscines, a subregion of the nucleus intercollicularis called the dorso-medial intercollicular nucleus appears ... [more ▼]

The nucleus intercollicularis is an important site in the control of vocalization in birds. In oscines, a subregion of the nucleus intercollicularis called the dorso-medial intercollicular nucleus appears to play a key role in this process because it receives the majority of the projections from the nucleus robustus archistriatalis and sends most of the projections to the motor nucleus of the hypoglossal nerve. In this paper, we present neurochemical studies of the nucleus intercollicularis in the Japanese quail which suggest the presence of heterogeneity within this structure. One rostral band contains high densities of cholinergic muscarinic receptors identified by quantitative autoradiography using tritiated N-methylscopolamine as the ligand. A caudal dorso-medial region is specifically labeled by estrogen receptors identified using immunocytochemistry and by alpha 2-adrenergic receptors which were quantified by autoradiography using tritiated para-amino-clonidine. This latter subregion is possibly equivalent to the dorso-medial intercollicular nucleus of oscines. Additional track-tracing studies should be performed to confirm this homology. The coexistence of estrogen and alpha 2-adrenergic receptors within the same structure suggests important functional connections between steroid action and catecholaminergic systems in the brain. [less ▲]

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See detailDortoirs urbains et dispersion diurne des étourneaux Sturnus vulgaris au pays de Liège en 1978-79.
Metzmacher, Maxime ULg; Ghiot, Alain; Jacob, Jean-Paul et al

in Cahiers d’Ethologie Appliquée (1981), 1

During the last decade, strarlings have built up considerable urban populations in the city of Liège,causing much trouble to inhabitants in the vicinity of the roosting sites. This success migh be ... [more ▼]

During the last decade, strarlings have built up considerable urban populations in the city of Liège,causing much trouble to inhabitants in the vicinity of the roosting sites. This success migh be attribuable to the sheltered situation of the city in a deep valley, abundance of large trees in green spaces along bank of the river Meuse and in public parks, good situation amid pastures in the countryside, and on important migration routes. Before any attempt to reduce this underisable population, the city's authorithies have promoted a research on the localisation, evaluation, evolution of roosting groups, as well as on pre-roosting routes and diurnal dispersion, It is clear that fluctuations in the attendance at one peculiar roosting site is understandable only in beeing replaced in the context of breeding cycle, migration influx, weather conditions, food disponibilities, and man-made disturbance. Understanding starling's population success and evolution needs long-term and large-scale coordinated research at regional and continental level. [less ▲]

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See detailDos au mur. De la gymnastique pour dissiper les maux de dos
Henrotin, Yves ULg

Article for general public (2008)

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