PMID: 2107501Feb 1, 1990Paper

The effect of Blastocrithidia triatomae (Trypanosomatidae) on the midgut of the reduviid bug Triatoma infestans

Parasitology
C JensenD H Molyneux

Abstract

The pathogenic flagellate Blastocrithidia triatomae disrupts the digestion of Triatoma infestans; the midgut ultrastructure of bugs infected with the flagellate and of uninfected bugs is compared. Third or fourth instar larvae were dissected either unfed or 1 week after feeding. In all uninfected bugs extracellular membrane layers (e.m.l.) covered the apical microvillar border of the epithelial cells. Some midgut regions of bugs infected with B. triatomae appeared normal but often adjacent cells showed pathological effects. In affected cells the e.m.l. and the microvilli and finally the cells themselves were reduced or destroyed. Correlated with these observations of pathogenicity the method of attachment of parasites changed. When the e.m.l. were present only rarely were flagella found, but on extracellular membrane-free cells B. triatomae attached by flagellar enlargement to the microvillar border or, if this was reduced, to the apical host cell membrane. No hemidesmosome-like plaques were found at the attachment site. Although some flagella were inserted into the apical region of the cells no intracellular flagellates were observed.

References

Jan 1, 1977·Advances in Parasitology·D H Molyneux
Jan 1, 1977·Transactions of the Royal Society of Tropical Medicine and Hygiene·L J Bruce-ChwattR Killick-Kendrick
Jan 1, 1989·Parasitology Research·L M MungombaK R Wallbanks
Nov 19, 1974·Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character·R Killick-KendrickR W Ashford
Jan 1, 1971·Journal of Invertebrate Pathology·R Watkins
Jan 1, 1983·Advances in Parasitology·D A Evans, D S Ellis
Jun 1, 1983·Annals of Tropical Medicine and Parasitology·J B Kaddu, M J Mutinga
Jun 1, 1986·Parasitology Today·Y Schlein

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Citations

Jan 1, 1990·Parasitology Today·G A SchaubM Pudney
Mar 15, 2021·Trends in Parasitology·Alexander O FrolovVyacheslav Yurchenko
Aug 21, 2021·International Journal for Parasitology·María Buendía-AbadMariano Higes

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