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Longevity of Toxocara cati Larvae and Pathology in Tissues of Experimentally Infected Chickens

  • Oryan, Ahmad (Department of Veterinary Pathology, School of Veterinary Medicine, Shiraz University) ;
  • Sadjjadi, Seyyed-Mahmoud (Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences) ;
  • Azizi, Shahrzad (Department of Veterinary Pathology, School of Veterinary Medicine, Shiraz University)
  • 투고 : 2009.07.10
  • 심사 : 2009.11.15
  • 발행 : 2010.03.15

초록

This study was conducted to determine the distribution patterns and duration of stay of Toxocara cati larvae in organs of chickens and to investigate chronic phase and potential zoonotic risk of toxocariasis in chickens. Chickens were orally infected with 1,000 embryonated T. cati eggs and necropsied 240 days post-infection. Organs of the chickens were examined at gross and microscopic levels; tissues were digested to recover larvae. Peribronchiolitis with infiltration of lymphocytes, and hyperplasia of bronchiolar associated lymphatic tissues (BALT) and goblet cells, were evident in the lungs of infected chickens. There were mild hemorrhages and infiltration of lymphocytes and a few eosinophils in the meninges. Larvae were recovered from 30% of the exposed chickens. Larvae recovery indicated that T. cati larvae stay alive for at least 240 days in the chicken brain. Therefore, chickens may potentially act as a paratenic host in nature and transfer T. cati larvae to other hosts.

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참고문헌

  1. Azizi S, Oryan A, Sadjjadi SM, Zibaei M. Histopathological changes and larval recovery of Toxocara cati in experimentally infected chickens. Parasitol Res 2007; 102: 47-52. https://doi.org/10.1007/s00436-007-0722-5

피인용 문헌

  1. Neurotoxocarosis: marked preference of Toxocara canis for the cerebrum and T. cati for the cerebellum in the paratenic model host mouse vol.7, pp.1, 2014, https://doi.org/10.1186/1756-3305-7-194
  2. Natural infection of free-range chickens with the ascarid nematode Toxocara sp. vol.114, pp.11, 2010, https://doi.org/10.1007/s00436-015-4669-7
  3. Toxocariasis of the Nervous System vol.65, pp.2, 2010, https://doi.org/10.2478/s11686-019-00166-1
  4. Mesenchymal stem cells combined with albendazole as a novel therapeutic approach for experimental neurotoxocariasis vol.147, pp.7, 2020, https://doi.org/10.1017/s003118202000044x