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Molecular investigation of Coxiella burnetii infections in aborted sheep in eastern Turkey
2016
Kılıç, A. | Kalender, H. | Koç, O. | Irehan, B. | Berri, Mustapha
Q fever is a zoonotic disease that occurs worldwide and is caused by the obligate intracellular bacterium Coxiella burnetii. The aim of this study was to investigate the presence of C. burnetii infection in aborted sheep in eastern Turkey using PCR. A total of 200 fetuses were collected from aborted sheep belonging to 200 herds in different locations in the eastern part of Turkey. Foetal organ samples such as liver, spleen, lung and stomach were taken and the DNA was purified from two hundred pooled samples. PCR analysis of C. burnetii presence in infected organs was performed, and 4 samples (2%) were found positive. In addition, the pooled organ suspensions were inoculated to embryonated chicken eggs, and PCR analysis of yolk sacs showed C. burnetii DNA in 5 samples (2.5%). This study shows that C. burnetii infection has an important role in sheep abortions in eastern Anatolia region.
اظهر المزيد [+] اقل [-]Florfenicol concentrations in ovine tear fluid following intramuscular and subcutaneous administration and comparison with the minimum inhibitory concentrations against mycoplasmal strains potentially involved in infectious keratoconjunctivitis.
2013
Regnier , Alain(auteur de correspondance) (Ecole Nationale Vétérinaire, 31076 Toulouse Cedex 3(France).) | Laroute , Valérie (Institut National de la Recherche Agronomique, 31077 Toulouse (France).) | Gautier-Bouchardon , Anne (Agence Nationale de Sécurité Sanitaire de l'Alimentation, de l'Environnement et du Travail, 22440 Ploufragan(France). Unité de Mycoplasmologie-Bactériologie,) | Gayrard-Troy , Véronique (INRA , St-Martin-Du-Touch (France). UMR 1331 Toxicologie Alimentaire) | Hagen-Picard , Nicole (INRA , St-Martin-Du-Touch (France). UMR 1331 Toxicologie Alimentaire) | Toutain , Pierre-Louis (INRA , St-Martin-Du-Touch (France). UMR 1331 Toxicologie Alimentaire)
To measure florfenicol concentrations in ovine tear fluid after IM and SC administration and determine minimum inhibitory concentrations (MICs) of florfenicol against field isolates of Mycoplasma organisms potentially involved in infectious keratoconjunctivitis. ANIMALS: 9 healthy adult Lacaune ewes. PROCEDURES: Animals received an IM and SC administration of florfenicol (20 mg/kg) in a 2-way crossover design. Samples of blood and tear fluid were collected before and for 24 hours after administration. Concentrations of florfenicol in plasma and tear fluid were measured via high-performance liquid chromatography. The MIC of florfenicol for various Mycoplasma strains cultured from sheep and goats was determined via an agar dilution method. RESULTS: Mean florfenicol concentration in tear fluid for the 24-hour period was significantly higher after IM administration (0.70 μg/mL) than after SC administration (0.22 μg/mL) and was maintained for a longer duration. The lacrimal fluid-to-plasma concentration ratio was not different between the 2 routes of administration, with mean values of 40.2% and 32.5% after IM and SC administration, respectively. The MIC for Mycoplasma agalactiae, Mycoplasma conjunctivae, and Mycoplasma mycoides isolates ranged from 0.5 to 8 μg of florfenicol/mL. Two strains of M agalactiae could be considered resistant to florfenicol. CONCLUSIONS AND CLINICAL RELEVANCE: Florfenicol readily penetrated the preocular tear fluid of sheep after IM and SC administration. For both routes of administration, doses > 20 mg/kg would be necessary to achieve tear fluid concentrations of florfenicol greater than the MICs for most strains of Mycoplasma organisms.
اظهر المزيد [+] اقل [-]Molecular investigation of Coxiella burnetii infections in aborted sheep in eastern Turkey
2016
Kiliç, A. | Kalender, H. | Koç, O. | Irehan, B. | Berri, Mustapha | Department of Microbiology, Sivrice Vocational High School ; Firat University | Department of Bioengineering, Faculty of Engineering ; Firat University | Department of Microbiology ; Central Veterinary Control and Research Institute | Infectiologie et Santé Publique (UMR ISP) ; Institut National de la Recherche Agronomique (INRA)-Université de Tours (UT) | Directorate General for Agricultural Research of the Turkish Ministry of Agriculture and Village Affairs : TAGEM/HS/YGAD/12/A07/P02/08
Q fever is a zoonotic disease that occurs worldwide and is caused by the obligate intracellular bacterium Coxiella burnetii. The aim of this study was to investigate the presence of C. burnetii infection in aborted sheep in eastern Turkey using PCR. A total of 200 fetuses were collected from aborted sheep belonging to 200 herds in different locations in the eastern part of Turkey. Foetal organ samples such as liver, spleen, lung and stomach were taken and the DNA was purified from two hundred pooled samples. PCR analysis of C. burnetii presence in infected organs was performed, and 4 samples (2%) were found positive. In addition, the pooled organ suspensions were inoculated to embryonated chicken eggs, and PCR analysis of yolk sacs showed C. burnetii DNA in 5 samples (2.5%). This study shows that C. burnetii infection has an important role in sheep abortions in eastern Anatolia region.
اظهر المزيد [+] اقل [-]Sheep enteric cestodes and their influence on clinical indicators used in targeted selective treatments against gastrointestinal nematodes
2019
Meradi, Salah | Cabaret, Jacques | Bentounsi, Bourhane | Université Hadj Lakhdar Batna 1 | Infectiologie et Santé Publique (UMR ISP) ; Institut National de la Recherche Agronomique (INRA)-Université de Tours (UT) | Institute of Veterinary Sciences ; Université Frères Mentouri – Constantine 1 = Constantine 1 – Frères Mentouri University (UMC)
International audience | Clinical indicators such as diarrhoea (DISCO) or anaemia (FAMACHA©) are used as a measure for targeted selective treatments against gastrointestinal nematodes (GIN). Enteric cestodes such as Moniezia may interfere directly with DISCO or indirectly with the FAMACHA© score. We investigated 821 Ouled Djellal rams naturally infected in a steppe environment (GIN alone, cestodes alone, GIN and cestodes) or not. The rams were treated with ivermectin 2 months before being slaughtered to reduce the impact of nematodes on the clinical scores; however, persistent or newly acquired GINs were not related to both scores. Of the non-infected rams (n = 296), 26% identified as needing treatment against GIN using the FAMACHA score, and 34.5% using DISCO would have been thus selected. This implies that the clinical indicators used for the targeted selective treatment of gastrointestinal nematodes are not fully reliable when a low infection is recorded and may well be influenced by confounding factors. As expected, only DISCO was affected by cestode infection, and we suggest that the presence of Moniezia should also be taken into consideration. | Des indicateurs cliniques tels que la diarrhée (DISCO) ou l'anémie (FAMACHA © ) sont utilisés comme mesure pour des traitements sélectifs ciblés contre les nématodes gastro-intestinaux (GIN). Les cestodes entériques tels que Moniezia peuvent interférer directement avec DISCO ou indirectement avec le score FAMACHA © . Nous avons enquêté sur 821 béliers Ouled Djellal naturellement infectés en milieu steppique (GIN seul, cestodes seuls, GIN et cestodes) ou non. Les béliers ont été traités à l'ivermectine 2 mois avant d'être abattus pour réduire l'impact des nématodes sur les scores cliniques ; cependant, les GIN persistants ou nouvellement acquis n'étaient pas liés aux deux scores. Parmi les béliers non infectés ( n = 296), 26% identifiés comme ayant besoin d'un traitement contre le GIN selon le score FAMACHA, et 34,5% selon DISCO auraient ainsi été sélectionnés. Cela implique que les indicateurs cliniques utilisés pour le traitement sélectif ciblé des nématodes gastro-intestinaux ne sont pas entièrement fiables lorsqu'une faible infection est enregistrée et peuvent bien être influencés par des facteurs de confusion. Comme prévu, seul DISCO a été affecté par l'infection par cestode, et nous suggérons que la présence de Moniezia soit également prise en considération.
اظهر المزيد [+] اقل [-]Sheep enteric cestodes and their influence on clinical indicators used in targeted selective treatments against gastrointestinal nematodes
2019
Meradi, Salah | Cabaret, Jacques | Bentounsi, Bourhane | Université Hadj Lakhdar Batna 1 | Infectiologie et Santé Publique (UMR ISP) ; Institut National de la Recherche Agronomique (INRA)-Université de Tours (UT) | Institute of Veterinary Sciences ; Constantine University 1
International audience | Clinical indicators such as diarrhoea (DISCO) or anaemia (FAMACHA©) are used as a measure for targeted selective treatments against gastrointestinal nematodes (GIN). Enteric cestodes such as Moniezia may interfere directly with DISCO or indirectly with the FAMACHA© score. We investigated 821 Ouled Djellal rams naturally infected in a steppe environment (GIN alone, cestodes alone, GIN and cestodes) or not. The rams were treated with ivermectin 2 months before being slaughtered to reduce the impact of nematodes on the clinical scores; however, persistent or newly acquired GINs were not related to both scores. Of the non-infected rams (n = 296), 26% identified as needing treatment against GIN using the FAMACHA score, and 34.5% using DISCO would have been thus selected. This implies that the clinical indicators used for the targeted selective treatment of gastrointestinal nematodes are not fully reliable when a low infection is recorded and may well be influenced by confounding factors. As expected, only DISCO was affected by cestode infection, and we suggest that the presence of Moniezia should also be taken into consideration.
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