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    Aeromonas hydrophila-associated skin lesions and septicaemia in a Nile crocodile (Crocodylus niloticus)
    (SOUTH AFRICAN VET ASSN, 2005) Turutoglu, H; Ercelik, S; Corlu, M
    Aeromonas hydrophila is one of the most common bacteria associated with the aquatic environment. There are, however, limited data on A. hydrophila infection in crocodilians. The aim of this report is to describe a case of skin lesions and septicaemia associated with A. hydrophila in a Nile crocodile (Crocodylus niloticus). A captive male crocodile in the Zoological Park of Antalya (Turkey) was found dead without showing signs of any disease. Gross examination showed brown or red-spotted skin lesions of varying size. These lesions were mostly scattered over the abdomen and occasionally on the tail and feet. At necropsy, numerous white, multifocal and randomly distributed areas were seen on the liver. Gram-stained smears from skin and liver lesions showed Gram-negative bacilli arranged in clusters. Pure cultures of A. hydrophila were recovered from skin, internal organs and blood. Isolates were found to be susceptible to ceftiofur, amoxicillin + clavulanic acid, oxytetracycline, enrofloxacin, danofloxacin, neomycin, gentamicin, and lincomycin + neomycin. A pathogenicity test was performed using this isolate on 4 male 2-year-old New Zealand white rabbits. Local abscesses formed in 2 rabbits injected subcutaneously and the 2 that were injected intraperitoneally died as a result of septicaemia. In conclusion, this report has shown that A. hydrophila may cause skin lesions and even death due to septicaemia in crocodiles.
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    Clinical and immunological effects of Newcastle disease virus vaccine on bovine papillomatosis
    (ELSEVIER SCIENCE BV, 2004) Avki, S; Turutoglu, H; Simsek, A; Unsal, A
    Newcastle disease virus (NDV) has antineoplastic and immunostimulatory properties, and it is currently being clinically tested in anticancer therapy. In order to analyze the immunostimulatory effects of NDV on bovine papillomatosis, we inoculated 14 cows subcutaneously with an attenuated vaccine containing the LaSota strain of NDV (LS-NDV). Four cows with papillomatosis served as controls. Serum samples were collected from each animal 1 h before and, 7 and 21 days after inoculation. In inoculated cows, on days 7 and 21 the mean antibody titers were log(2) 2.43 +/- 0.92 and log(2) 5.57 +/- 0.72 by haemagglutination inhibition (HI), and the mean levels of tumor necrosis factor-alpha (TNF-alpha) were 5.80 +/- 4.19 and 5.39 +/- 12.66 ng/ml by WEHI-164 cytotoxicity assay. Significant differences between inoculated and control animals were evident for antibody titers on day 21 and clinical scores on day 60. A correlation was evident between the TNF-alpha activities and clinical scores on day 21. The clinical observations at day 60 showed that the papillomas in five cows were completely resolved (36%), one animal had no alterations on clinical appearance of the tumor (7%), and papillomas in eight cows were regressed (57%). In conclusion, these results demonstrated that inoculation of LS-NDV vaccine stimulates an antibody response and limited increase in TNF-alpha activity and may enhance clinical recovery in bovine papillomatosis. (C) 2003 Elsevier B.V. All rights reserved.