A five-year-old female dog was presented with a four-week history of inappetence, weight loss, and skin and gait abnormalities. Physical examination revealed weakness, depression, incoordination of the posterior limbs, emaciation, skin and hair coat alterations, peripheral lymphadenopathy, pale mucous membranes and fever. Laboratory analysis of samples revealed abnormalities which included anaemia, neutrophilic leucocytosis, thrombocytopenia, low serum glucose and albumin concentrations, and increased serum alkaline phosphatase activity. The diagnosis was confirmed microscopically, by demonstrating the presence of Hepatozoon canis gametocytes within neutrophils in Giemsa-stained peripheral blood smears. Treatment consisting of toltrazuril and a trimethoprim-sulfamethoxazole combination was effective in relieving the clinical signs and clearing the blood of H. canis gametocytes. To the authors' knowledge, this is the first detailed clinical description of H. canis infection in a dog in Turkey.
The aim of this study was to determine the zinc, iron, copper, calcium, phosphorus, and magnesium levels in blood serum and zinc and copper levels in hair of dogs with canine visceral leishmaniasis. The serum zinc and iron levels were found to be significantly lower in diseased dogs than those of healthy controls. Serum copper levels were significantly higher, whereas no significant differences were observed for calcium, phosphorus, and magnesium. There were no significant differences in the zinc and copper levels in hair. Our results show that the serum zinc, iron, and copper levels are altered in canine leishmaniasis.
Current treatments with imidocarb dipropionate for infected dogs with Hepatozoon canis do not always provide parasitological cure. The objective of this study is to determine whether concomitant use of toltrazuril may potentiate the effect of imidocarb dipropionate in the management of H. canis infection (HCI). Twelve dogs were determined to have naturally HCI based on clinical signs, identification of the parasite in blood smears, and serologic assay. The animals were allocated randomly to one of two groups (n = 6 in each group). Dogs in Imi group were given imidocarb dipropionate at a dose of 6 mg/kg body weight subcutaneously in two injections 14 days apart. Imi plus Toltra group was given imidocarb dipropionate as dose mentioned above and toltrazuril at 10 mg/kg/day orally for the first five treatment days. Clinical findings, blood counts and parasitaemia levels in blood before and 14, 28 and 56 days after the initial treatment were performed to evaluate treatment response. The overall clinical efficacy of imidocarb dipropionate with and without toltrazuril was 83.3% and 66.7%, respectively; with a mean recovery time of 21.0 and 25.6 days, respectively. A substantial main effect of time on mean PCV, Hb, WBC, neutrophil and PLT and gradual reduction of parasitaemia were significantly observed in both groups (P < 0.05), whereas no significant difference was noticed between the studied protocols. The parasitologic cure rate at the end of eight weekly observation period was 16.6% and 33.3% in Imi and Imi plus Toltra groups, respectively. Similar clinicopathologic and parasitologic responses were observed in both treated groups; thus, it was concluded that toltrazuril does not reveal additional benefit to imidocarb therapy in dogs with HCI.
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