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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/8112

Title: Morphometric Study of Schistosoma mansoni Adult Worms Recovered from Undernourished Infected Mice
Authors: Oliveira, Sheilla A.
Barbosa Jr., Aryon A.
Gomes, Delir C.
Machado-Silva, José Roberto
Barros, Andréia F.
Neves, Renata Heisler
Coutinho, Eridan M.
Keywords: Schistosoma mansoni - nutritional status - adult worms - morphometric study
Issue Date: 31-Dec-2003
Publisher: Fundação Oswaldo Cruz, Fiocruz
Citation: Memórias do Instituto Oswaldo Cruz (ISSN: 1678-8060) Vol 98 Num 5
Abstract: Some unfavourable effects of malnutrition of the host on Schistosoma mansoni worm biology and structure have been reported based upon brigthfield microscopy. This paper aims to study by morphometric techniques, some morphological parameters in male and female adult worms recovered from undernourished albino mice in comparison with parasites recovered from well-fed infected mice. Undernourished animals were fed a multideficient and essentially low protein diet (RBD diet) and compared to well-fed control mice fed with the commercial diet NUVILAB. Seventy-five days post-infection with 80 cercarie (BL strain) animals were sacrificed. All adult worms were fixed in 10% formalin and stained with carmine chloride. One hundred male and 60 female specimens from each group (undernourished and control) were examined using an image system analysis Leica Quantimet 500C and the Sigma Scan Measurement System. The following morphometrical parameters were studied: body length and width, oral and ventral suckers, number and area of testicular lobes, length and width of ovary and uterine egg. For statistical analysis, the Student's t test for unpaired samples was applied. Significant differences (p < 0.05) were detected in body length and width, in parameters of suckers, uterine egg width, ovary length and area of testicular lobes, with lower values for specimens from undernourished mice. The nutritional status of the host has negative influence on S. mansoni adult worms, probably through unavailability of essential nutrients to the parasites.
URI: http://hdl.handle.net/1807/8112
Other Identifiers: http://www.bioline.org.br/abstract?id=oc03131
Rights: Copyright 2003 - Instituto Oswaldo Cruz - Fiocruz
Appears in Collections:Bioline International Legacy Collection

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