Prehospital Emergencies in Illegal Gold Mining Sites in French Guiana     

Gérald Egmann  Pierre Tattevin  Renaud Palancade  Matthieu Nacher 《The Forestry Chronicle》2018,29(1):72-77

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Topography of the respiratory,oral, and guttural pouch bacterial and fungal microbiotas in horses     

Stephanie Bond  Christopher McMullen  Edouard Timsit  Renaud Léguillette 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2023,37(1):349-360

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Evaluation of coagulation via thromboelastography in healthy horses administered dexamethasone     

Jenna Woodman  Catherine R. Wagg  S?ren R. Boysen  Renaud Leguillette  Kyle Mizen  Marie-France Roy 《The Canadian veterinary journal. La revue veterinaire canadienne》2015,56(12):1271-1274

Dexamethasone was administered to healthy horses daily for 7 days. Blood samples were collected at 3 time points from both treatment and non-treatment groups, and analyzed via thromboelastography (TEG). There were no significant differences in TEG parameters between treated and untreated horses, or within treatment groups over time.  相似文献   

Effects of nebulized dexamethasone on the respiratory microbiota and mycobiota and relative equine herpesvirus-1, 2, 4, 5 in an equine model of asthma     

Stephanie L. Bond  Matthew Workentine  Jana Hundt  UCVM Class of  James R. Gilkerson  Renaud Léguillette 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2020,34(1):307-321

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Acid-base disorders in sick goats and their association with mortality: A simplified strong ion difference approach     

Diego E. Gomez  Sofia Bedford  Shannon Darby  Megan Palmisano  Robert J. MacKay  David L. Renaud 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2020,34(6):2776-2786

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Recurrent airway obstruction--heaves.     

Renaud Léguillette 《Veterinary Clinics of North America: Equine Practice》2003,19(1):63-86, vi

Heaves, or recurrent airway obstruction (RAO), is a chronic respiratory disease featuring lower airway inflammation, bronchoconstriction, and mucus accumulation. Inhaled organic dusts and T helper 2 type immunologic reactions are involved in the complex pathophysiology of RAO. Clinical signs vary and alternate with remission periods. The diagnosis is often based on history and clinical examination in severe cases, but bronchoalveolar lavage may be useful for the detection of early cases. The most important aspect of treatment is to avoid exposure to allergens. Corticosteroids may be administered systemically or by inhalation in combination with bronchodilators and environmental control.  相似文献   

Does the source of nitrogen affect the response of subterranean clover to prolonged root hypoxia?     

Faouzi Horchani  Rim Hajri  Holmi Khayati  Renaud Brouquisse  Samira Aschi‐Smiti 《植物养料与土壤学杂志》2010,173(2):275-283

Nitrogen (N) is taken up by most plant species in the form of nitrate (NO ) or ammonium (NH ). The plant response to continuous ammonium nutrition is species‐dependent. In this study, the effects of the source of N nutrition (NO , NH , or the mixture of NO and NH ) on the response of clover (Trifolium subterraneum L. cv. 45C) plants to prolonged root hypoxia was studied. Under aerobic conditions, plant growth was strongly depressed by NH , compared to NO or mixed N nutrition, as indicated by the significant decrease in root and shoot‐dry‐matter production (DW), root and shoot water contents (WC), leaf chlorophyll concentration, and chlorophyll fluorescence parameters (F₀, F_v/F_m). However, the N source had no effect on chlorophyll a–to–chlorophyll b ratio. Under hypoxic conditions, the negative effects of root hypoxia on plant‐growth parameters (DW and WC), leaf chlorophyll concentration, and chlorophyll fluorescence parameters were alleviated by NH rather than NO supply. Concomitantly, shoot DW–to–root DW ratio, and root and leaf NH concentrations were significantly decreased, whereas root and leaf carbohydrate concentrations, glutamine synthetase activities, and protein concentrations were remarkably increased. The present data reveal that the N source (NO or NH ) is a major factor affecting clover responses to hypoxic stress, with plants being more tolerant when NH is the N form used. The different sensitivity is discussed in terms of a competition for energy between nitrogen assimilation and plant growth.  相似文献   

Vitamin C and elemental composition of some bushfruits     

N. Peerzada  S. Renaud  P. Ryan 《Journal of plant nutrition》2013,36(7):787-793

Vitamin C and elemental analysis of a range of indigenous bushfruit from the Northern Territory, Darwin, Australia, was carried out. The results suggest that bushfruit may be a valuable food resource. In the majority of cases, vitamin C and elemental composition of bushfruits were comparable to those of western fruits in the same fruit category. Billy goat plums (Terminalia fertinandiana) have the highest vitamin C content, while K concentration is generally high as compared to other elements. Morinda citrifolia gave strong test for the presence of terpenes.  相似文献   

Agricultural intensification exacerbates female-biased primary brood sex-ratio in tree swallows     

Renaud Baeta  Marc Bélisle  Dany Garant 《Landscape Ecology》2012,27(10):1395-1405

Impacts of agriculture practices are documented at every ecosystem level from landscape structure to biodiversity. Birds are especially affected by agricultural modifications as shown by the decline of farmland species in Europe and North America. Few studies have assessed the effects of such modifications on individual characteristics directly influencing population dynamics. Several bird studies showed that sex-ratio may be adaptive and that mother condition affects the production of sons and daughters. However, little is known about the connections between environmental and individual characteristics on sex allocation. Here we quantified the variation in primary sex-ratio in tree swallows (Tachycineta bicolor) nesting in contrasted environments associated with agricultural intensification in southern Québec, Canada. We found that intensive agricultural practices affected female sex-ratio allocation in this area, resulting in more biased sex-ratio towards daughters throughout most of the hatching period. Yet, this bias towards daughters was reduced as the season progressed in the most intensively cultivated areas, suggesting that tree swallows have problems foreseeing the difficult growth and postfledging conditions that their nestlings will experience in such environments. Our results thereby support the hypothesis that intensive agricultural areas act as an ecological trap in our study system. We also found that effects of agricultural intensification on sex allocation differed among years and affected the relationships between sex-ratio allocation and hatching date. Our results suggest that agricultural intensification modifies female sex allocation in tree swallows, but the importance of the effects might vary among years and depend on timing of breeding.  相似文献   

An optimized duplex real-time PCR tool for sensitive detection of the quarantine oomycete Plasmopara halstedii in sunflower seeds     

Ioos R  Fourrier C  Wilson V  Webb K  Schereffer JL  de Labrouhe DT 《Phytopathology》2012,102(9):908-917

Plasmopara halstedii, the causal agent of downy mildew of sunflower, is an oomycete listed as a quarantine pathogen. This obligate parasite resides in a quiescent state in seeds of sunflower and can be spread from seed production areas to areas of crop production by international seed trade. To prevent the spread or the introduction of potentially new genotypes or fungicide-tolerant strains, an efficient method to detect P. halstedii in sunflower seed is required. This work reports the optimization of a real-time detection tool that targets the pathogen within sunflower seeds, and provides statistically validated data for that tool. The tool proved to be specific and inclusive, based on computer simulation and in vitro assessments, and could detect as few as 45 copies of target DNA. A fully optimized DNA extraction protocol was also developed starting from a sample of 1,000 sunflower seeds, and enabled the detection of <1 infected seed/1,000 seeds. To ensure reliability of the results, a set of controls was used systematically during the assays, including a plant-specific probe used in a duplex quantitative polymerase chain reaction that enabled the assessment of the quality of each DNA extract.  相似文献