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  • Title: Isolation and molecular characterization of Toxoplasma gondii from captive slender-tailed meerkats (Suricata suricatta) with fatal toxoplasmosis in Argentina.
    Author: Basso W, Moré G, Quiroga MA, Pardini L, Bacigalupe D, Venturini L, Valenzuela MC, Balducchi D, Maksimov P, Schares G, Venturini MC.
    Journal: Vet Parasitol; 2009 May 12; 161(3-4):201-6. PubMed ID: 19201541.
    Abstract:
    In this study, the diagnosis of fatal disseminated toxoplasmosis in three captive slender-tailed meerkats (Suricata suricatta) in the zoo of La Plata, Argentina and the invitro isolation and molecular characterization of Toxoplasma gondii are reported. The animals showed depression, dyspnea and hypothermia, and also ataxia in one case, and died within 1-5 days. The main histopathological lesions included interstitial pneumonia, non-suppurative inflammatory changes and focal necrosis in liver, spleen, kidney and brain. Tachyzoites or tissue cysts were present in lung, liver, spleen, brain, striated muscle, kidney, intestine and mesenteric lymph node sections, and stained strongly with T. gondii antiserum in immunohistochemical analysis. T. gondii was isolated in Swiss mice and in bovine monocytes cultures from tissues of one of the meerkats. The isolate was cryopreserved and it was named TG-Suricata-1. T. gondii DNA was demonstrated in tissues of all three animals and in tachyzoites isolated in cell cultures. The PCR-RFLP analysis of markers based in the loci 3'-SAG2, 5'-SAG2, BTUB, GRA6, SAG3, c22-8, L358, PK1, c29-2 and Apico of T. gondii produced patterns corresponding to the clonal type III. Type III strains of T. gondii possess no or only little virulence in the mouse model, however their association with virulence in other animal species is uncertain. In the present case, T. gondii of the clonal lineage III was responsible for fatal cases in S. suricatta. To our knowledge, this is the first report of isolation and genotyping of T. gondii from S. suricatta.
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