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Effect of eugenol on hematological parameters in rats

Author(s): Jezdimirović Milanka | Aleksić Nevenka | Milovanović Mirjana | Stojanović Dragica | Jezdimirović Nemanja | Đurđević Dragan | Kureljušić Jasna

Journal: Veterinarski Glasnik
ISSN 0350-2457

Volume: 67;
Issue: 1-2;
Start page: 29;
Date: 2013;
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Keywords: eugenol | haematotoxicity | erythrocytes | leukocytes | rat

Investigations covered the possible hematotoxic effect of eugenol in rats following two-week and four-week continuous p.o. application. An experiment was conducted on 72 maleWistar rats divided into six groups. Four groups were treated with different doses of eugenol (10 mg/kg bm/day, 50 mg/kg/day, 200 mg/kg/day and 400 mg/kg bm/day), the control group was administered a vehiculum (0,5 % methylcellulose, 20 % propylene glycol and water), and the sixth group was the absolute untreated control. Eugenol and the vehiculum were administered using a gastric probe in a volume of 1 ml/100 g body mass of rat. Blood was sampled using cardiac puncture on days 14 and 28 of the experiment in order to determine hematological parameters (hematocrit, number of erythrocytes, MCV, haemoglobin concentration, MCH, number of leukocytes, leukocyte formula, and number of thrombocytes). The results have shown that eugenol administered over 14 and 28 days in doses of 10, 50, 200 i 400 mg/kg bm/day has no hemolytic activity. Furthermore, administered over four weeks, it does not significantly affect the number of erythrocytes, haemoglobin concentration, hematocrit, erythrocyte volume, number of leukocytes, and the leukocyte formula. Applied over two weeks, eugenol causes a significant increase in the mass of haemoglobin per erythrocyte, in comparison with controls. This effect is non-specific and does not depend on the dose or on the duration of treatment. The eugenol doses of 10 and 200 mg/kg/day administered over a period of four weeks result in a statistically significant reduction in the number of thrombocytes in comparison with the absolute control, while the highest investigated dose (400 mg/kg) causes a significant increase in comparison with the numbers for rats treated with a dose of 10 and 200 mg/kg/day. The changes in thrombocyte number caused by eugenol are qualitatively different and depend neither on the dose nor on the duration of treatment. Eugenol applied over two or four weeks does not exhibit a significant influence on the number of lymphocytes, monocytes or granulocytes. [Projekat Ministarstva nauke Republike Srbije, br. 46009 i br. 46002]
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