Parasitology Commons^™

Characterization Of Tblpn In Trypanosoma Brucei, Alyssa S. Frainier

Biology Master’s Theses

Trypanosoma brucei, is a flagellated, unicellular, parasitic protozoan transmitted by the tsetse fly. It is the source of African sleeping sickness in humans. African sleeping sickness has two different stages, the bloodstream and central nervous system stages, each characterized by different symptoms. Problems with treatment result from severe side effects of the drugs used to treat African sleeping sickness. No vaccine is available due to high antigenic variation. T. brucei exists as two forms. The procyclic fly form relies on oxidative phosphorylation, expresses procyclin as its surface protein, and is morphologically long and slender. In contrast, the mammalian bloodstream form ...

A New Species Of Metathelazia (Nematoda: Pneumospiruridae) From The Lungs Of A Nine-Banded Armadillo In Central Mexico = Especie Nueva De Metathelazia (Nematoda: Pneumospiruridae) De Los Pulmones De Un Armadillo Del Centro De México, F. Agustín Jiménez-Ruiz, Rogelio Rosas-Valdez, Scott Lyell Gardner

Faculty Publications from the Harold W. Manter Laboratory of Parasitology

Twenty-four worms were collected from the bronchioles in both lungs of a male nine-banded armadillo Dasypus novemcinctus Linnaeus, 1758 captured in Teacalco, Morelos, Mexico. The worms, herein named Metathelazia mexicana n. sp., show a constriction in the esophagus at the level of the nerve ring; males of the species have 7 pairs of papillae, fewer than the other species in the genus. Metathelazia capsulata is the most similar species to Metathelazia mexicana; however, the latter has much shorter spicules. This is the fourth species in the genus known to occur in the New World.

Se recolectó un total de 24 ...

Bistability In The Protozoan Parasite Giardia Lamblia, Alimatu Sulemana

Biology Dissertations

Giardia lamblia is an important protozoan parasite, the transmission of which from one host to the other, and survival outside the host are dependent on differentiation of vegetative trophozoites into infectious cysts (encystment). Like many protozoa, Giardia trophozoites differentiate into cysts in response to nutrient deprivation or other unfavorable environmental changes. Giardia, a lipid auxotroph, encysts when bile sequesters lipids that they require (Jarroll et al., 1981, Luján et al., 1996b). During encystment, Giardia trophozoites elicit a unique pattern of gene expression resulting in the synthesis and transport of cyst wall components ultimately resulting in the formation of a protective ...