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Morphomolecular characterization of Strongylus vulgaris isolated from donkeys with special references to histopathological study on the affected organs.

Abstract: Equine gastrointestinal tract is infected with () which is highly pathogenic parasite for its harmful effect on cranial mesenteric artery during its migration. So, this study was applied for identification of in donkeys ultramorphologically and molecularly. In addition to, detection of the pathological effect of larval stage of on the mesenteric arterial system using histopathology and immunohistochemistry. During the period from September to December; 2019, 60 male and 20 female donkeys at the Giza Zoo was postmortem examined. adults and larvae were collected from the large intestine and cranial mesenteric arteries (CMAs), respectively. Ultramorphological examination of the collected adults was done using scanning electron microscope (SEM). DNA was extracted from 5 larvae and 6 adults for further conventional PCR studies and sequencing of the internal transcriped spacer 2 (ITS2) gene. The ITS2 gene were amplified and showed bands at 148 base pair (bp). The ITS2 gene nucleotide sequences of all isolates were aligned using Basic Local Alignment Search Tool (BLAST). Histological sections of affected mesenteric arteries exhibited the presence of the parasite larvae either in the lumen with thrombus formation or attached to the intima. Most of the detected inflammatory cell populations were CD68-positive cells. From these results, it can be concluded that the ribosomal spacers genes could be used as markers for species identification in eggs collected from equine feces as a beneficial method of diagnosis. Also, it could be important in disease surveillance, improving preventive measures and developing an effective control strategy.
Publication Date: 2022-06-06 PubMed ID: 36091280PubMed Central: PMC9458839DOI: 10.1007/s12639-022-01498-yGoogle Scholar: Lookup
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  • Journal Article

Summary

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This research focused on the identification and effects of a strongylus vulgaris parasite, highly prevalent in donkeys’ gastrointestinal tract, using ultramorphological and molecular techniques. It also delved into the lesions caused by this parasite on the mesenteric arterial system through histopathological and immunohistochemical methods.

Morphological and Molecular Identification

  • The research was carried out on 60 male and 20 female donkeys at the Giza Zoo, examined post-mortem between September and December 2019.
  • Adults and larvae of the strongylus vulgaris were collected from the large intestine and cranial mesenteric arteries respectively.
  • A scanning electron microscope (SEM) was used to study the ultramorphology of the collected adults, while their DNA was extracted for conventional PCR studies and the sequencing of the internal transcribed spacer 2 (ITS2) gene.

Alignment and Amplification of the ITS2 Gene

  • The ITS2 gene was amplified and showed bands at 148 base pair (bp).
  • All the isolates’ ITS2 gene nucleotide sequences were aligned using the Basic Local Alignment Search Tool (BLAST).

Pathological Impact of Strongylus Vulgaris on Donkeys

  • In affected mesenteric arteries subjected to histological examination, the larvae of the strongylus vulgaris parasite were observed either inside the lumen with thrombus (blood clot) formation or attached to the intima (innermost layer of a blood vessel).
  • The majority of the detected inflammatory cells in these regions were CD68-positive cells, indicative of inflammation.

Research Conclusion

  • The research concluded that the ribosomal spacers genes, such as the ITS2, could potentially be used as markers to identify the strongylus vulgaris species in eggs collected from equine feces, making it a beneficial diagnostic method.
  • Moreover, gaining a better understanding of the parasite and its effects could play a significant role in disease surveillance, improving preventive measures, and developing an effective control strategy against the parasite.

Cite This Article

APA
El-Gameel SM, Al-Mokaddem AK, Salaeh NMK, Attia MM. (2022). Morphomolecular characterization of Strongylus vulgaris isolated from donkeys with special references to histopathological study on the affected organs. J Parasit Dis, 46(3), 795-803. https://doi.org/10.1007/s12639-022-01498-y

Publication

ISSN: 0971-7196
NlmUniqueID: 9713059
Country: India
Language: English
Volume: 46
Issue: 3
Pages: 795-803

Researcher Affiliations

El-Gameel, Sohila M
  • Department of Parasitology, Faculty of Veterinary Medicine, Cairo University, P.O. Box 12211, Giza, Egypt.
Al-Mokaddem, Asmaa K
  • Department of Pathology, Faculty of Veterinary Medicine, Cairo University, 12211, Giza, Egypt.
Salaeh, Nagla M K
  • Department of Zoology Faculty of Science, Aswan University, Aswan, Egypt.
Attia, Marwa M
  • Department of Parasitology, Faculty of Veterinary Medicine, Cairo University, P.O. Box 12211, Giza, Egypt.

Conflict of Interest Statement

Conflict of interestAll authors declare that they have no conflict of interest.

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