Résumé
Campylobacteriosis is an extremely important zoonosis, circulating freely in the environment. In nonhuman primates kept in open facilities and bred for experimental purposes, the presence of Campylobacter spp. could cause severe damage to the production and interfere with the results of scientific research. In this paper, we assessed the circulation of Campylobacter spp. in a colony of clinically healthy rhesus monkeys (Macaca mulatta) destined to research. The analysis was carried out during seven non-consecutive years. Data showed that despite several changes made in animal management along the studied years in order to control this zoonosis, reduction of bacterial charge did not occur. Significant differences among the age groups and sex were observed. Infants showed higher susceptibility than adult animals. In general males were more infected than females. Modifications adopted in the handling techniques need to be reviewed with the intent of improving the production, reducing bacterial infection of the stock and avoiding undesirable cross reactions in the research carried out with these animals. Therefore, this paper alerts professionals that work directly with captive rhesus monkeys about the risks of Campylobacter spp. infection and possible interference on the experimental procedures.
Sujets)
Animaux , Mâle , Femelle , Animaux de laboratoire/microbiologie , Infections à Campylobacter/médecine vétérinaire , Campylobacter/isolement et purification , Macaca mulatta/microbiologie , Maladies des singes/microbiologie , Infections à Campylobacter/diagnostic , Campylobacter/classification , Campylobacter/effets des médicaments et des substances chimiques , Études longitudinales , Tests de sensibilité microbienne , Maladies des singes/diagnosticRésumé
El propósito de este estudio fue el de evaluar la capacidad de los virus del SIDA (VIH-1 y VIH-2) para multiplicarse en las células mononuclearres de la sangre periférica (CMSP) de cuatro especies de primates. CMSP de Cebus apella, patas (Erythrocebus patas), monos verdes (cercopithecus aethiops sabeus) y rhesus (Macaca mulatta) fueron infectados "in vitro" con VIH-1 y con VIH-2. La multiplicación de estos virus se determinó midiendo la actividad de la enzima retrotranscriptasa en los cultivos infectados. Ambos virus produjeron efectos citipáticos en dichos cultivos. Se observó un bajo nivel de multiplicación de los virus VIH-1 y VIH-2 en las células provenientes de monos Cebus. Sin embargo, el virus VIH-2 se multiplicó eficientemente en CMSP de monos rhesus. La capacidad que posee el virus de la inmunodeficiencia humana tipo 2, (VIH-2) de multiplicarse en estas células, podría ser utilizada para en la evaluación "in vivo" de productos antivirales y de vacunas