Journal
PARASITOLOGY RESEARCH
Volume 88, Issue 4, Pages 315-325Publisher
SPRINGER-VERLAG
DOI: 10.1007/s00436-001-0523-1
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The effect of the active sulphoxide metabolite of the fasciolicide triclabendazole on the surface morphology of the tropical liver fluke, Fasciola gigantica, was determined in vitro by scanning electron microscopy. At a concentration of 10 mug/ml, swelling and blebbing of the tegument was evident after only 6 h incubation. The blebbing was focussed on the spines. With progressively longer incubation periods, blebbing on the spines became more severe, leading to tegumental sloughing and spine loss. Tegumental loss became more widespread and, after incubation periods of 18 h and 24 h in vitro, perforations of the basal lamina were evident and, in some cases, holes penetrated through the entire fluke in the tail region. The ventral surface was consistently more severely affected than the dorsal and similarly the posterior region of the fluke was more disrupted than the anterior region. The results confirm the potent activity of triclabendazole against F. gigantica.
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