Yazar "Tanyel, B." seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • Küçük Resim
    Öğe
    Cryptosporidiosis in newborn calves in Ankara region: clinical, haematological findings and treatment with Lasalocid-Na
    (M H Schaper Gmbh Co Kg, 2005) Şahal, Mehmet; Karaer, Zafer; Duru, Sibel Yasa; Çizmeci, Şirin; Tanyel, B.
    In the first part of the present study, a total of 109 faeces samples collected from calves suffering from diarrhoea were examined for Cryptosporidium parvum oocytes and 39 (35,8 %) of them were found to be positive. On the basis of oocyte counts, 14 (36 %) samples were assessed as mildly infected and 25 (64 %) samples as heavily infected. The occurrence of the disease was more common in winter (56,4 %) than during other seasons (autumn 0 %, summer 15,4 %, spring 28,2 %). In the second part of the present study, the ionophore polyetherantibiotic Lasalocid-Na, that is licensed as a feed additive (Bovatec (R), 15 % Lasalocid-Na, Roche AG) in Turkey, was administered to 11 calves naturally infected with Cryptosporidium and its therapeutic effect was evaluated. Lasalocid-Na (8 mg/ kg BW) was given once daily for 3 days added to the milk. The clinical parameters of infected calves were evaluated before and 3 days after the treatment in 24 hour intervals. The oocyst counts of faeces of calves with cryptosporidiosis were between 15 x 10(6) and 96 x 10(6)/mL before treatment. No oocystes were found in faecal samples of 3 calves (27,3 %) after 48 hours and 4 (40 %) calves after 72 hours of treatment, respectively. The number of oocytes in the faeces of the remaining calves varied between 90 and 1,2 x 106/mL during the respective period. The number of oocystes before treatment was significantly higher than the number of oocytes after treatment. One of the calves died 56 h after the first treatment despite the treatment. The pH of venous blood was decreased prior to treatment as expected. The lowest pH was 6,83, the lowest bicarbonate concentration was 3,80 mmol/l and the lowest base excess was -31,2 mmol/l. After the treatment, pH, pCO(2), HCO3- and BE values of the venous blood increased significantly and reached physiological values before discharge. The differences between the values assessed before the treatment and at the 2(nd), 3(rd), and 4(th) sampling time were statistically significant. Number of leucocyte and haemoglobin concentration before the treatment were significantly higher than the values after treatment (p < 0,01). These values returned back to physiological ranges 72 hours after first treatment. Lasalocid-Na was rather well tolerated. Side effects such as the decline of the suckling reflex and intoxication symptoms in respect to present administration form and dosage were found only in one calf (9 %). Treatment procedure in the present study with Lasalocid-Na was found to be suitable in combination with an adequate infusion therapy for the treatment of calves on farms with problems related to cryptosporidiosis. Although the use of Lasolacid-Na for the treatment of Cryptosporidium infection in the EU is banned, it might be used as an alternative drug outside of the EU since it has a successful effect for preventing reinfections.
  • Küçük Resim
    Öğe
    The evaluation of renal allo and autotransplantation results in cats
    (Scientific Technical Research Council Turkey, 2002) Özgencil, F.E.; Beşaltı, Ö.; Özak, A.; Karademir, N.; Erdeger, J.; Tanyel, B.
    For the first time in Turkey, renal autotransplantation in 7 cats and renal allotransplantation in 7 cats having blood-crossmatch-compatible donors were performed. Immunosuppression was maintained by a prednisolone-cyclosporin combination in the renal allotransplantation group. All cats in the renal allotransplantation group died during the operation or between 3 and 72 h postoperatively. Two cats in the renal autotransplantation group survived approximately 2 years. Hyperacute or acute rejection findings were not encountered according to perioperative observations, laboratory findings or histopathological evaluations of renal allografts. The results of histopathological evaluations of renal allografts indicated acute tubular necrosis (ATN) findings caused by renal hypoperfusion due to hypotension. The reason for ATN was considered to be a result of hypotension that invasive methods could not control.