PHYSIOLOGICAL, IMMUNOLOGICAL AND HISTOPATHOLOGICAL COMPARISON OF ECHINOCOCCUS GRANULOSUS (G6) CAMEL STRAIN BY DIFFERENT VIABILITY STATUS USING SECONDARY CYST DEVELOPMENT IN RAT

  • Department of Zoology, Faculty of Science, Al-Azhar University (Girls), Cairo, Egypt.
  • Parasitology Unit, Animal Health Department, Desert Research Center, Cairo, Egypt.
  • Abstract
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  • How to Cite This Article
  • Corresponding Author

The current study aimed to demonstrate the differences in hydatid cysts of Echinococcusgranulosus(G6) camel strain by different viability status using secondary cyst development in the rat and to study physiological, immunological and histopathological changes associated with.A comparative study was conducted along time of exposure in different groups of rats which intraperitoneally injected with three different status of the viability of hydatid cyst fluid of camel origin (G6).The groups were:low viability protoscolices (1), high viability protoscolices fluid (2), not viable and not completely transformed to the calcareous status of protoscolices fluid(3), and one negative control group. The immunobiology of host–E. granulosus interactions were evaluated by measuring IL-10 a cytokine associated with immunoregulation of effector responses. Histopathological changes were conducted in liver, lung,and kidney because these organs are the target of infection and play an important role in the immune status of the host. Results showed thatthesecondary infection by hydatid cyst fluid in the experimental model causedsevere pathological changes which increased in rats of groups 2 and 3 along with the time of infection, in addition to considerable changes that revealed by hematological and biochemical tests.The median IL-10 level in rats of group 1 was 6.77 pg/ml compared to 5.74 pg/ml in control group, while the third group recorded the highest level equal 10.45 (above 10.0 pg/ml). The rats of the second group reached to 9.11 pg/ml, but no more survival of rats above 10.0 pg/ml. Elevated IL-10 levels were correlated with poor survival. We concluded that the most effective stage of hydatid cyst development was the stage before transformation to calcareous phase and the most effective changes in serological, biochemical, immunological and pathological changes occur during this stage.


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Rasha A. El Sayed, Safaa M. Barghash, Nadia M. El-Alfy, Basma M. Abou-Elnour and Al- Shaimaa M. Sadek. (2017); PHYSIOLOGICAL, IMMUNOLOGICAL AND HISTOPATHOLOGICAL COMPARISON OF ECHINOCOCCUS GRANULOSUS (G6) CAMEL STRAIN BY DIFFERENT VIABILITY STATUS USING SECONDARY CYST DEVELOPMENT IN RAT, Int. J. of Adv. Res., 5 (02), 2119-2131, ISSN 2320-5407. DOI URL: https://dx.doi.org/10.21474/IJAR01/3385


Safaa Mohamed Barghash
Post Doctor of Parasitology, Parasitology Unit, Animal Health Department, Desert Research Center (DRC). Phone: +202- 26332846, Fax: +202-26357858, B.O.P. 11753 Address: 1- Mathaf El-Mataria St, El-Naam, Cairo, Egypt. Mobile: +20 1067859132 E- mail: Barghash_7@yahoo.com

DOI:


Article DOI: 10.21474/IJAR01/3385      
DOI URL: https://dx.doi.org/10.21474/IJAR01/3385