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Biomarkers

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Synthesis Of Neoglycoproteins As Potential Biomarkers For Chagas Disease And Cutaneous Leishmaniasis Caused By Leishmania (Viannia) Braziliensis, Eileni Rodriguez Gil May 2024

Synthesis Of Neoglycoproteins As Potential Biomarkers For Chagas Disease And Cutaneous Leishmaniasis Caused By Leishmania (Viannia) Braziliensis, Eileni Rodriguez Gil

Open Access Theses & Dissertations

Protozoan parasites are responsible for causing numerous diseases in humans and mammals worldwide. Among them are Chagas disease (CD), caused by the parasite Trypanosoma cruzi (T. cruzi), and tegumentary leishmaniasis (TL), caused by the parasite Leishmania (Viannia). Both diseases coexist in many regions of Latin America, and current hurdles to differentially diagnose them and determine chemotherapy success need to be overcome. CD can be diagnosed by traditional serological tests and polymerase chain reaction (PCR), but disadvantages of these methods are that they may produce false negatives because the antigens used in commercial CD kits are not conserved across all T.cruzi …


Isolation And Characterization Of Α-Gal-Containing Extracellular Vesicles (Evs) From Three Major Genotypes Of Trypanosoma Cruzi: Potential Biomarkers Of Chagas Disease, Nasim Karimi Hosseini Jan 2020

Isolation And Characterization Of Α-Gal-Containing Extracellular Vesicles (Evs) From Three Major Genotypes Of Trypanosoma Cruzi: Potential Biomarkers Of Chagas Disease, Nasim Karimi Hosseini

Open Access Theses & Dissertations

Chagas disease (ChD) is a neglected tropical disease (NTD) caused by the protozoan parasite, Trypanosoma cruzi. It is transmitted by the insect-vector triatomine (popular known as kissing bug), blood transfusion, organ transplantation, congenitally, and contaminated foods and juices. T. cruzi has evolved several strategies to invade the host cells, including the release extracellular vesicles (EVs), which assist pathogen survival and its replication within the host. T. cruzi is covered with highly glycosylated surface molecules such as glycoproteins and glycolipids, which are shown to be involved in the interaction with host immune cells. These molecules are highly immunogenic and reactive with …


Trypanosoma Cruzi Trypomastigote Glycosylphosphatidylinositol-Anchored Mucins And A Synthetic Alpha-Gal-Containing Neoglycoprotein As Potential Biomarkers And Vaccines For Chagas Disease, Igor Leandro Estevao Jan 2019

Trypanosoma Cruzi Trypomastigote Glycosylphosphatidylinositol-Anchored Mucins And A Synthetic Alpha-Gal-Containing Neoglycoprotein As Potential Biomarkers And Vaccines For Chagas Disease, Igor Leandro Estevao

Open Access Theses & Dissertations

Chagas disease (CD), caused by the protozoan Trypanosoma cruzi, is a neglected tropical disease that kills or permanently disable thousands of people annually. About 6-8 million people are estimated to be infected worldwide. Although many efforts have been made for the development of an effective immunotherapy, currently there is no vaccine to prevent or treat CD in humans. Despite their toxicity, the two current drugs for CD, benznidazole (BZN) and nifurtimox (NFX), have medium-to-high efficacy in the chronic stage of the disease and could save or improve the lives of thousands of patients. However, negative seroconversion in treated patients, as …