References of "Richard, Eric"
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See detailSubclinical diseases affecting performance in Standardbred trotters: Diagnostic methods and predictive parameters
Richard, Eric ULg; Fortier, Guillaume; Pitel, Pierre-Hugues et al

in Veterinary Journal (2010), 184(3), 282-289

The objectives of this study were to determine the prevalence of sub-clinical diseases in poorly-performing Standardbred horses, compare their physiological response to exercise with control horses, and ... [more ▼]

The objectives of this study were to determine the prevalence of sub-clinical diseases in poorly-performing Standardbred horses, compare their physiological response to exercise with control horses, and identify predictive parameters of poor-performance. Fifty horses underwent thorough clinical and ancillary examinations, including haematological and biochemical evaluation, Doppler echocardiography, standardised exercise tests (SETs) on both treadmill and racetrack, treadmill video-endoscopy and collection of respiratory fluids. Most of the poorly-performing horses exhibited many concomitant diseases. The most frequently diagnosed problems involved the lower and upper respiratory tract and the musculoskeletal system. Poor-performers had lower speeds at a blood lactate (LA) concentration of 4 mmol/L (VLA4) and a heart rate (HR) of 200 bpm (V200) on treadmill and racetrack, as well as lower values for haematological parameters, plasma angiotensin-converting enzyme and antioxidants, compared to control horses. Problems of the respiratory system were the most frequently diagnosed sub-clinical diseases affecting performance. SETs, together with some blood markers, may be useful as a non-specific diagnostic tool for early detection of diseases that may affect performance. [less ▲]

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See detailMolecular detection of Theileria equi and Babesia caballi in the bone marrow of asymptomatic horses
Pitel, Pierre-Hugues; Pronost, Stéphane; Scrive, Thibaut et al

in Veterinary Parasitology (2010)

Equine piroplasmosis is a tick-borne disease, the aetiological agents of which are either Theileria equi or Babesia caballi parasites. Piroplasmosis is commonly encountered in acute or sub-acute clinical ... [more ▼]

Equine piroplasmosis is a tick-borne disease, the aetiological agents of which are either Theileria equi or Babesia caballi parasites. Piroplasmosis is commonly encountered in acute or sub-acute clinical forms although clinically recovered horses may remain asymptomatic but infected for several years. The clinical detection of such apparently healthy carrier horses (that serve as a host for subsequent infecting ticks), remains a worldwide challenge for controlling the spread of the disease. The aim of the present paper is to report on the detection of both T. equi and B. caballi by PCR in the bone marrow of naturally infected asymptomatic horses. Among 35 bone marrow samples evaluated for orthopaedic clinical research purposes, three samples from clinically healthy horses were found to be positive for T. equi, one of which was also positive for B. caballi. Even if the precise localisation of these parasites as well as the underlying mechanisms for persistence still remains unknown, one should not exclude bone marrow as a potential reservoir site for T. equi and B. caballi in infected asymptomatic horses. We suggest that, this possible localisation site (the bone marrow) should be considered as a therapeutic target when treating parasitic infection in apparently healthy horses. [less ▲]

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See detailEndoscopie à l'effort : les examens sur piste et sur tapis roulant sont-ils équivalents ?
Van Erck, Emmanuelle ULg; Frippiat, Thibault ULg; Dupuis, Marie-Capucine ULg et al

in Proceedings des Journées annuelles de l’Association vétérinaire équine française (2009) (2009, October)

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See detailSyndrome d'inflammation trachéale : évaluation clinique et bactériologique
Richard, Eric ULg; Maillard, K.; Dupuis, Marie-Capucine ULg et al

in Pratique Vétérinaire Equine (2009), 41(162), 45-49

Lower airway inflammation is a frequent cause of poor-performance in hors e s .An association between inflammation and bacterial isolation in tracheal wash fluid has previously been found ; bacterial ... [more ▼]

Lower airway inflammation is a frequent cause of poor-performance in hors e s .An association between inflammation and bacterial isolation in tracheal wash fluid has previously been found ; bacterial counts were neve rtheless not defined.The aims of this study were to qualitatively and quantitatively compare tracheal bacterial flora of French Trotters with tracheal inflammation (SIT) and control horses (CTL), and evaluate association between endoscopic, cytological and microbiological evaluation of the trachea. Neutrophil percentage in tracheal wash was significantly different between groups whereas tracheal mucus accumulation was not. No significant difference was found between groups for neither percentage of respectively sterile samples or percentage pathogenic bacteria being isolated. Bacterial counts in SIT group were however 10 to 200 times higher than in the CTL group.This study suggests that isolation of pathogenic bacteria alone do not allow estimation of the level of airway inflammation; whereas severe tracheal inflammation may be present in absence of any bacteriological infection [less ▲]

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See detailInfluence of subclinical inflammatory airway disease on equine respiratory function evalueated by impulse oscillometry
Richard, Eric ULg; Fortier, Guillaume; Denoix, Jean-Marie et al

in Equine Veterinary Journal (2009), 41(4), 384-389

Reasons for performing study: Inflammatory airway disease (IAD) is a nonseptic condition of the lower respiratory tract. Its negative impact on respiratory function has previously <br /><br />been ... [more ▼]

Reasons for performing study: Inflammatory airway disease (IAD) is a nonseptic condition of the lower respiratory tract. Its negative impact on respiratory function has previously <br /><br />been described using either forced expiration or forced oscillations techniques. However, sedation or drug-induced bronchoconstriction were usually required. The impulse <br /><br />oscillometry system (IOS) is a noninvasive and sensitive respiratory function test validated in horses, which could be useful to evaluate IAD-affected horses without further <br /><br />procedures. <br /><br />Objectives: To determine the sensitivity of IOS in detecting alterations of the respiratory function in subclinically IAD-affected horses without inducing bronchoprovocation and to characterise their respiratory impedance according to frequency for each respiratory phase. <br /><br />Methods: Pulmonary function was evaluated at rest by IOS in 34 Standardbred trotters. According to the cytology of bronchoalveolar lavage fluid (BALF), 19 horses were defined <br /><br />as IAD-affected and 15 horses were used as control (CTL). Total respiratory resistance (Rrs) and reactance (Xrs) from 1–20 Hz as well as their inspiratory and expiratory <br /><br />components were compared between groups. <br /><br />Results: A significant increase of Rrs at the lower frequencies (R1–10 Hz) as well as a significant decrease of Xrs beyond 5 Hz (X5–20 Hz) was observed in IAD compared to CTL horses. IOS-data was also significantly different between inspiration and expiration in IAD-affected horses. In the whole population, both BALF eosinophil and mast cell counts were <br /><br />significantly correlated with IOS measurements. <br /><br />Conclusions: Functional respiratory impairment may be measured, even in the absence of clinical signs of disease. In IAD-affected horses, the different parameters of respiratory <br /><br />function (Rrs or Xrs) may vary depending on the inflammatory cell profiles represented in BALF. <br /><br />Potential relevance: Impulse oscillometry could be used in a routine clinical setting as a noninvasive method for early detection of subclinical respiratory disease and of the results <br /><br />of treatment in horses. [less ▲]

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See detailUpper airway dynamic endoscopy: are track and treadmill observations comparable ?
Van Erck, Emmanuelle ULg; Frippiat, Thibault ULg; Dupuis, Marie-Capucine ULg et al

in Tessier, Caroline; Gerber, Vincent (Eds.) Abstract book: 4th World Equine Airways Symposium (WEAS) (2009)

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See detailLaboratory findings in respiratory fluids of the poorly-performing horse
Richard, Eric ULg; Fortier, Guillaume; Lekeux, Pierre ULg et al

in Veterinary Journal (2009)

Any disorder impairing a performance horse’s ability to ventilate its lungs and exchange oxygen compromises exercise performance in any discipline. Since bronchoalveolar lavage was described in horses in ... [more ▼]

Any disorder impairing a performance horse’s ability to ventilate its lungs and exchange oxygen compromises exercise performance in any discipline. Since bronchoalveolar lavage was described in horses in the early 1980s, laboratory evaluation of respiratory fluids, along with clinical and functional assessment of the respiratory system, has become a relevant step in the diagnosis of respiratory disease affecting performance. The aim of this review is to provide objective information to assist clinicians in interpreting laboratory findings by (1) summarising published cytological references values in both clinically healthy horses and those with various airway diseases, (2) assessing the influence of physiological circumstances, such as exercise, on the cytological evaluation, (3) discussing the relationship between cytological and microbiological analyses, clinical signs and respiratory function, and (4) suggesting how this latter relationship may affect performance. [less ▲]

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See detailAssociation between lower airway inflammation and EIPH in 196 standarbred racehorses
Simon, Valérie ULg; Art, Tatiana ULg; Ramery, Eve ULg et al

in Tessier, Caroline; Gerber, Vincent (Eds.) Abstract book: 4th World Equine Airways Symposium (WEAS) (2009)

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See detailPutative implication of equine herpesvirus in lower airway inflammation: systematic PCR assays of 708 respiratory fluids
Fortier, Guillaume ULg; Richard, Eric ULg; Pronost, S. et al

in Tessier, Caroline; Gerber, Vincent (Eds.) Abstract book: 4th World Equine Airways Symposium (WEAS) (2009)

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See detailAssociation between inflammatory airway disease, tracheal inflammation and respiratory function evaluated by impulse oscillometry
Richard, Eric ULg; Fortier, G.; Dupuis, Marie-Capucine ULg et al

in Tessier, Caroline; Gerber, Vincent (Eds.) Abstract book: 4th World Equine Airways Symposium (WEAS) (2009)

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See detailNonconventional radiographic projections in the equine orthopaedic examination
Richard, Eric ULg; Alexander, Kate

in Equine Veterinary Education (2007), 19(10), 551-559

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