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Online Journal of Veterinary Research©
(Including Medical and Laboratory Research)
Volume 26 (11): 825-835, 2022.
Coccidial infections and phylogenetics of Isospora suis
Styliani Loukatou1, Ioannis Alatsathianos1, 2, Sophia Kossida1, Dimitrios Vlachakis1
1Computational Biology & Medicine Group, Biomedical Research Foundation, Academy of Athens, Soranou Efessiou, 2Department of Clinical Pathology, National and Kapodistrian University of Athens, University Campus, Athens, Greece.
Loukatou S, Alatsathianos I, Kossida S, Vlachakis D., Coccidial infections and phylogenetics of Isospora suis, Onl J Vet Res., 26 (11): 825-835, 2022. Protozoa are ancient, unicellular, heterotrophic, eukaryotic microorganisms that commonly parasitize animals or plants. These reside in hosts and not on surfaces and measure 10-52 micrometers. Coccidia api-complex protozoans, are a large group of parasitic protists that host in enteric mammalian cells causing infections in young animals especially if housed in close contact. Most infections are subclinical thus diagnosis and treatment are difficult. However in outbreaks, primary symptoms are diarrhea, pain, loss of appetite and weight. Its spread is rapid and it can be transmitted by contact infecting poultry, piglets, rabbits and other mammals. Phylogenetic analyses with 18S subunit ribosomal mRNA sequences show that genus Cystoisospora consist of Sarcocystidae clade of mammals and Eimeriidae in birds. ~450bp of IST-1 gene of Cystoisospora spp. had 98% homology with Cystoisospora suis. Phylogenetic tree of dog isolates were closely associated with Cystoisospora Suis but sequences of all Cystoisospora spp. formed a monophyletic group of C. ohioensis, belli, rivolta and C. suis.
Key-Words: Protozoa, coccidia, phylogenetics, Isospora suis.