References of "Bureau, Fabrice"
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See detailMechanics of the Respiratory System in Healthy Newborn Calves Using Impulse Oscillometry
Uystepruyst, Christophe; Reinhold, Petra; Coghe, Joost et al

in Research in Veterinary Science (2000), 68(1), 47-55

Arterial blood gases, acid-base balance and respiratory function tests using impulse oscillometry (IOS) were performed on 40 clinically healthy newborn calves during the first 24 hours of life to evaluate ... [more ▼]

Arterial blood gases, acid-base balance and respiratory function tests using impulse oscillometry (IOS) were performed on 40 clinically healthy newborn calves during the first 24 hours of life to evaluate their respiratory adaptation to extrauterine life. Gas exchange efficiency of the lung was significantly improved with time and was accompanied by the correction of the mixed acidosis observed at birth and by significant changes in respiratory mechanics. Major changes were detected within the first 6 hours. The significant decrease in resistance (R) and the increase in reactance (X) with time, demonstrate the improvement in respiratory mechanics of both upper and lower airways, and reflect the increase in lung volume, the improved lung tissue elasticity and/or distribution of the ventilation. Respiratory mechanical, arterial blood gases and acid-base balance data provided in this study describe a successful respiratory adaptation to extrauterine life in healthy newborn calves. [less ▲]

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See detailBronchial hyperrespponsiveness to isoprostanes in an animal model of asthma
Kirschvink, Nathalie; Bureau, Fabrice ULg; Art, Tatiana ULg et al

in Pflügers Archiv : European Journal of Physiology (2000), 439(R242),

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See detailGranulocyte macrophage-colony stimulating factor delay granulocytic apoptosis in heaves-affected horses
Turlej, R. K.; Sandersen, Charlotte ULg; Fievez, Laurence ULg et al

in Pflügers Archiv : European Journal of Physiology (2000)

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See detailNuclear factor kappaB activity and characterization in lung cells from heaves affected horses
Sandersen, Charlotte ULg; Turlej, R. K.; Fievez, Laurence ULg et al

in Pflügers Archiv : European Journal of Physiology (2000), 440(R217),

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See detailPreliminary classification of the bovine respiratory complex into different levels of severity
Coghe, Joost; Uystepruyst, Christophe; Bureau, Fabrice ULg et al

in Bovine Practitioner (1999), 33(1), 85-87

Despite prophylactic measures, mainly including vaccination programs and management measures, respiratory disease remains the major cause of economic losses in the bovine species. Choice of treatment is ... [more ▼]

Despite prophylactic measures, mainly including vaccination programs and management measures, respiratory disease remains the major cause of economic losses in the bovine species. Choice of treatment is currently mainly based on the clinicians' personal experience. A theoretical method has been proposed earlier to classify this syndrome into four grades of severity : Grade 1, subclinical disease (no treatment); Grade 2, compensated clinical disease (antibiotics only); Grade 3, noncompensated clinical disease (antibiotics + anti inflammatory drugs); and Grade 4, irreversible clinical disease (no treatment). In order to realize this theoretical classification under field conditions, three techniques, each one evaluating the oxygen transport chain at a différent level, have been studied and validated, i.e. pulse oximetry, lactate dosage and the lobeline test. Afterwards, measurements were performed on calves suffering from acute respiratory disease and a preliminary classification was established. This novel approach could orientate and economize therapeutic strategies in bovine respiratory disease. [less ▲]

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See detailSpirometric Variables Recorded after Lobeline Administration in Healthy Friesian and Belgian White and Blue Calves: Normal Values and Effects of Somatic Growth
Bureau, Fabrice ULg; Uystepruyst, C. H.; Coghe, J. et al

in Veterinary Journal (1999), 157(3), 302-308

The purposes of the present study were: (1) to develop original equations to predict spirometric variables (SV) in healthy Friesian and Belgian White and Blue (BWB) calves < 1 year of age; and (2) to ... [more ▼]

The purposes of the present study were: (1) to develop original equations to predict spirometric variables (SV) in healthy Friesian and Belgian White and Blue (BWB) calves < 1 year of age; and (2) to determine the effects of somatic growth on SV. Sixty-seven Friesian and 500 BWB calves were investigated. For each calf, the following SV were calculated: (1) the average minute volume derived using all the ventilatory cycles recorded during the 15 s of maximal ventilatory changes induced by lobeline administration (0.25 mg/kg, i.v.) (15-s LMV); (2) the maximal tidal volume, the maximal peak expiratory flow and the maximal peak inspiratory flow recorded from single breaths after lobeline administration (MVTL, MPEFLand MPIFL, respectively); (3) the ventilatory reserve (VRL= 15-s LMV - VEr; VEr= minute volume at rest). Mass specific (s) values were also calculated. All SV changed linearly with somatic growth in both Friesian and BWB calves. Since the rise in SV was more related to body weight than the age of calves, equations for reference values of SV always had body weight as the only independent variable. In the youngest calves, s SV were lower in the BWB breed. In the oldest calves (i.e. 1 year of age), s MPEFLand s MPIFLremained small in BWB calves whereas s MVTL, s 15-s LMV and s VRLwere almost equal in both breeds. These results could be related to the lower resistance to respiratory disorders in BWB calves < 1 year of age than in Friesian calves < 1 year of age. [less ▲]

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See detailNon-invasive assessment of arterial haemoglobin oxygen saturation in cattle by pulse oximetry
Coghe, Joost; Uystepruyst, Christophe; Bureau, Fabrice ULg et al

in Veterinary Record : Journal of the British Veterinary Association (1999), 145

The aim of this study was to evaluate the practicality and accuracy of different attachment sites for the optodes of a pulse oximeter (measuring arterial haemoglobin oxygen saturation) in healthy cattle ... [more ▼]

The aim of this study was to evaluate the practicality and accuracy of different attachment sites for the optodes of a pulse oximeter (measuring arterial haemoglobin oxygen saturation) in healthy cattle, and to assess the accuracy of pulse oximetry in diseased cattle with low haemoglobin oxygen saturation values caused by respiratory disease. The tait the nasal septum and the genital mucosa of females provided a continuous, stable and intense signal. The smallest bias, and no significant difference between measurements of arterial haemoglobin (mSp02) with the pulse oximeter and measurements of arterial haemoglobin oxygen saturation (SaOZ) with a blood gas analyser was obtained when the probe was attached to the tail. This site was used to evaluate the accuracy of pulse oximetry in animais with respiratory disease. There was a small bias between the measurements of Sa02 and mSp02, with a tendency for pulse oximetry to underestimate higher values and to overestimate lower values. The precision of pulse oximetry decreased substantially with the values for Sa02 <80 per cent, which lies outside the clinically relevant range [less ▲]

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See detailMaximal Ventilation Assessment in Healthy Calves
Bureau, Fabrice ULg; Coghe, J.; Uystepruyst, C. H. et al

in Veterinary Journal (1999), 157(3), 309-314

In order to define a reliable method for estimating maximal ventilation in cattle, 12 healthy calves underwent a rebreathing trial and injections of increasing doses of lobeline, a respiratory analeptic ... [more ▼]

In order to define a reliable method for estimating maximal ventilation in cattle, 12 healthy calves underwent a rebreathing trial and injections of increasing doses of lobeline, a respiratory analeptic. The effects of these tests on the main ventilatory parameters (tidal volume, VT; respiratory frequency, fR and minute volume,.VE) recorded during the 15 s of maximal response were studied and compared. The sharp rise in.VE(4.8 times higher than the resting value) observed during the rebreathing trial was mainly due to an increase in VT. This rise in ventilation was the highest ever reported in calves. Lobeline dose-dependently enhanced ventilation up to a threshold dose of 0.25 mg/kg, which always produced a maximal response. This maximal response (3.7 times higher than the resting value), reflecting both an increase in fR and VT, was reproducible at an interval of 12 h and was highly correlated with that observed during the rebreathing trial (R = 0.98, P< 0.001). These results suggest that: (1) rebreathing trial is a reliable method to induce and measure maximal ventilation in calves; and (2) lobeline administration (0.25 mg/kg) is a reliable means of accurately estimating this variable. Lobeline administration, unlike the rebreathing trial, is safe and easy to standardize, and the test therefore seems to be the preferred way of studying maximal ventilation in calves. [less ▲]

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See detailFuture trends in the management of airway inflammatory disorders
Lekeux, Pierre ULg; Bureau, Fabrice ULg

in Proceedings: 6th Congress of the World Equine Veterinary Association (1999)

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See detailGenetic parameters estimation for spirometric performances in Belgian Blue calves
Bureau, Fabrice ULg; Fievez, Laurence ULg; Michaux, C. et al

in Proceedings: 17th Symposium of the Comparative Respiratory Society (1999)

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See detailChanges in respiratory mechanics measured by IOS during the first day of life in calves
Uystepruyst, Ch; Reinhold, P.; Coghe, J. et al

in Proceedings: 17th Symposium of the Comparative Respiratory Society (1999)

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See detailSpirometric performances in Belgian Blue calves, environmental factors analysis and genetic parameters estimation
Bureau, Fabrice ULg; Michaux, C.; Uystepruyst, Ch et al

in Proceedings: 50th Annual Meeting of the European Association for Animal Production (1999)

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See detailRelationships between spirometric performances and occurrence and severity of respiratory disease in Belgian Blue calves
Bureau, Fabrice ULg; Fievez, Laurence ULg; Detilleux, J. et al

in Proceedings: 17th Symposium of the Comparative Respiratory Society (1999)

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See detailCorrelation between the neutralizing response to BRSV vaccinal strains and the prevention of pulmonary dysfunction induced by a challenge strain
Bureau, Fabrice ULg; Genicot, B.; Coghe, J. et al

in Proceedings: Réunion de la Société Belge de Physiologie et de Pharmacologie Fondamentales et Cliniques (1999)

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See detailSustained NF-kB activity after removal of the etiologic agent in an animal model of asthma
Bureau, Fabrice ULg; Bonizzi, G.; Kirschvink, Nathalie et al

in Proceedings: 1999 International Conference of the American Thoracic Society (1999)

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See detailTranscription factor, nuclear factor-kB, activity in bronchial epithelial cells of RAO horses
Bureau, Fabrice ULg; Fievez, Laurence ULg; Kirschvink, Nathalie et al

in Proceedings: 17th Symposium of the Comparative Respiratory Society (1999)

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See detailBronchial hyperresponsiveness to isoprostanes in COPD horses ?
Kirschvink, Nathalie; Bureau, Fabrice ULg; Art, Tatiana ULg et al

in Proceedings: Réunion de la Société Belge de Physiologie et de Pharmacologie Fondamentales et Cliniques (1999)

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See detailA new strategy to improve the bovine resistance to respiratory disease or when respiratory physiology meets beef selection
Bureau, Fabrice ULg; Lekeux, Pierre ULg

in Wensing, Th (Ed.) Production Diseases in Farm Animals (1999)

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See detailEstimation of the heritability of spirometric variables in calves
Bureau, Fabrice ULg; Coghe, J.; Uystepruyst, Christophe et al

in Pflügers Archiv : European Journal of Physiology (1998), 435

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