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    Evaluation of Paraoxonase Activity, Total Sialic Acid and Oxidative Stress in Sheep with Ecthyma Contagiosa
    (Kafkas Univ, Veteriner Fakultesi Dergisi, 2017) Deveci, Hacı Ahmet; Kükürt, Abdulsamed; Uzlu, Erdoğan; Sözdutmaz, İbrahim; Merhan, Oğuz; Aktaş, Sinan; Karapehlivan, Mahmut
    Zoonoses are defined by the world health organization as diseases and infections which are transmitted naturally between vertebrate animals and human. Undestanding the zoonotic risk posed by pox viruses in companion animals is important for both human and animal health. contagious ecthyma is highly contagious, zoonotic, viral skin disease that affects sheep, goats and some other domesticated and wild animals. In this present study was detected and evaluated levels of plasma paraoxonase activity (PON1), high-density lipoprotein (HDL), total sialic acid (TSA), malondialdehyde (MDA), nitric oxide (NO) and total blood glutathione (GSH) concentrations in healthy sheep and natural infected sheeps with ecthyma. In healthy sheep, laboratory results were determined as PON1 218.54 +/- 17.93 U/L, TSA 59.89 +/- 5.59 mg/dL, HDL 48.4 +/- 4.88 mg/dL, MDA 8.58 +/- 0.80 mu mol/L, NO 7.78 +/- 1.02 mu mol/L and GSH 21.11 +/- 3.70 mg/dL. These values were found 174.92 +/- 18.68 U/L, 70.1 +/- 6.56 mg/dL, 37.9 +/- 6.47 mg/dL, 11.26 +/- 1.06 mu mol/L, 12.44 +/- 1.90 mu mol/L, 7.79 +/- 0.90 mg/dL respectively in sheeps wich are infected by ecthyma. As a result, it was concluded that there is oxidative stress due to imbalance between pro-oxidant and antioxidant molecules in sheep which are infected by ecthyma, and this imbalance is shaped by increasing oxidant levels.
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    Serum paraoxonase activity and total sialic acid in sheep with foot and mouth disease
    (Polish Soc Veterinary Sciences Editorial Office, 2018) Deveci, Hacı Ahmet; Kükürt, Abdulsamed; Nur, Gökhan; Alpay, Merve; Merhan, Oğuz; Bozukluhan, Kadir; Karapehlivan, Mahmut
    The aim of this study was to investigate paraoxonase (PON1) activity and total sialic acid to be measured for the first time in sheep infected naturally with foot and mouth disease, and their relationships with oxidative stress. A total of 30 Awassi sheep (aged between 2-4), which were healthy and infected with the foot and mouth disease virus (FMDV) were used in the study. Concentrations of paraoxonase activity (PON1), which is an important antioxidant against oxidative stress, high density lipoprotein (HDL) and total sialic acid (TSA), which has a critical role for immune system and is one of the significant indicators of cellular degeneration, were measured in serum samples drawn from animals. The total oxidant capacity (TOC) and total antioxidant capacity (TAC) were evaluated to determine the oxidative balance. It was observed that serum PON1 (P < 0.001) and HDL (P < 0.01) concentrations were significantly lower compared to the control group. TSA concentration was higher in the infected group (P < 0.001) compared to the healthy group. TOC was higher (P < 0.001) and TAC was lower (P < 0.01) in the infected group compared to the control group. Consequently, harmful effects of the infection of foot and mouth disease were shown as cause of oxidative cell damage and the high rate of sialic acid was produced depending on the degeneration during the infection.