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The aim of this study was to determine the influence of anticoagulants on dog platelet activation. The investigation was carried out by evaluating the expression CD61 and fosfatydyloserin as a marker of activation. In vitro data platelet activation was obtained by PMA and for the stabilization of the cell membrane procaine was used. Thrombopoesis was evaluated by reticulated platelets. It was shown that the platelets number was dependant on anticoagulants, and was greater in EDTA-3K blood, and the expression of CD61 was the largest on normal platelets in EDTA-3K platelet-rich plasma (PRP). The number of activated platelets was the highest among aggregates and the highest percentage of CD61+AnV+ did not depend on the use of anticoagulants. The percentage of platelets and microparticles with the expression of those antigens influenced by procaine, microparticles and aggregates influenced by PMA was higher in citrate PRP than EDTA-3K PRP. It was observed that anticoagulants did not have any influence on the percentage of reticulated platelets and the highest number of them can be found in among aggregates.
The subject of this study was to determine urine specific gravity (USg) and urinary creatinine (UCrn) in dogs with different diseases but with normal renal function. Sick dogs with different diseases were divided into nine groups. Dogs suffering from polyuria/polydipsia, vomits, diarrhoea and females in oestrus or pregnant were excluded from the studies. The healthy dogs served as a control group. Over a three-year period, a total of 267 dogs were examined clinically as well as using imaging and laboratory diagnostics methods. In sick dogs, USg and UCrn were found to be essentially decreased (except animals with neurological and uterine diseases, and neurological diseases, respectively), as compared with normal dogs. In clinically healthy animals of the control group, UCrn and USg did not significantly differ between the females and males. As for the control group, no correlation between UCrn/USg and the body weight/age was found, either.
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