In vivo effects of diminazene aceturate (berenil) ontrypanosoma evansiinfectionin mice: ascanningelectron microscopy study. | ||||
| Delta Journal of Science | ||||
| Article 7, Volume 36, Issue 2, June 2013, Page 42-48 PDF (1.5 MB) | ||||
| Document Type: Research and Reference | ||||
| DOI: 10.21608/djs.2013.139634 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Nabila M. Mira; Said E. Amer; Magdy E. Mahfouz | ||||
| Department of Zoology, Faculty of Science, Kafrelsheikh University | ||||
| Abstract | ||||
| Chemotherapy is the main approach of trypanosomal control. This study aims to examine the efficiency of the commonly used antitrypanosomal drug Diminazene aceturate (DIMA) or Berenil against Trypanosoma evansi, in vivo. The criteria used for assessment of the antitrypanosomal effect included the examination of the host blood as well as monitoring the morphological changes inT. evansi as seen by SEM. Sixty Swiss albino mice, groups of fifteen, were employed. These animals were divided into four groups; non-infected and non-treated control, infected with locally isolated T. evansi strains receiving no treatment, infected-treated with DIMA (20mg/kg)sacrificed after 4 hand 8 h post treatment, respectively.SEM demonstrated that infection with T. evansi produced several alterations in RBCs structure including the appearance of microspherocytes, schistocytosis, aggregation, doughnut-cell formation, keratocytosis and increment of the biconcave appearance of cell diskocytes. In addition, RBCs were constantly observed to adhere firmly to trypanosomes. After 4 and 8h of DIMA treatment, the cells aggregated were dispersed and the biconcave disk shapes of RBCs create large and stable contact area between adjacent cells.These results also indicated that, in comparison to the untreated group that display normal T. evansimorphology and surface topology, parasite exposed to DIMA for 4h revealed a number of morphological alterations in the body shape including rounding of the parasite’s body and in several instances, shortening of the flagellum. Following 8h of treatment, drastic morphological changes were observed with torsion and shortening of the body, sometimes with the aspect of a tadpole-shape and a pronounced reduction in the size of the parasite, while the region of the free flagellum was preserved.This study demonstrates the potential of DIMA in vivo in the treatment of trypanosomiasis. | ||||
| Keywords | ||||
| Diminazene; Trypanosoma evansi; Miceinfection; Scanning electron microscopy | ||||
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