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Author: Donna Huber

UGA geneticist gets to take risks with new seed grant

By Donna Huber Tania Rozario, assistant professor in the Department of Genetics and member of the Center for Tropical and Emerging Global Diseases, recently received a seed grant from the Hypothesis Fund to develop a new approach toward advancing tapeworm research. Her natural inquisitiveness and willingness to tackle tough questions has led to this moment. …

Extended blood stage sensitivity profiles of Plasmodium cynomolgi to doxycycline and tafenoquine, as a model for Plasmodium vivax

Testing Plasmodium vivax antimicrobial sensitivity is limited to ex vivo schizont maturation assays, which preclude determining the IC50s of delayed action antimalarials such as doxycycline. Using Plasmodium cynomolgi as a model for P. vivax, we determined the physiologically significant delayed death effect induced by doxycycline [IC50(96 h), 1,401 ± 607 nM]. As expected, IC50(96 h) to chloroquine (20.4 nM), piperaquine (12.6 µM), and …

Two CTEGD faculty members receive Creative Research Awards

Jessica Kissinger and Dennis Kyle received the Lamar Dodd Creative Research Award during UGA’s Honors Week. The award recognizes established investigators whose overall scholarly body of work has had a major impact on the field of study and has established the investigator’s international reputation as a leader in the field. Jessica Kissinger, Distinguished Research Professor …

The Unfortunate Abundance of Trypanosoma cruzi in Naturally Infected Dogs and Monkeys Provides Unique Opportunities to Advance Solutions for Chagas Disease

Trypanosoma cruzi, the protozoan parasite and cause of Chagas disease, is widely distributed in many vertebrate and triatomine species throughout North, Central, and South America. Variations in housing quality largely determines human infection risk in the Americas. However, the southern U.S. contains widespread, infected triatomine vectors and captive species and domesticated animals with active T. cruzi infection …

What is new in FungiDB: a web-based bioinformatics platform for omics-scale data analysis for fungal and oomycete species

  FungiDB (https://fungidb.org) serves as a valuable online resource that seamlessly integrates genomic and related large-scale data for a wide range of fungal and oomycete species. As an integral part of the VEuPathDB Bioinformatics Resource Center (https://veupathdb.org), FungiDB continually integrates both published and unpublished data addressing various aspects of fungal biology. Established in early 2011, …

Positive clinical outcome using a modified dosing regimen of benznidazole in dogs at high risk for infection or acutely infected with Trypanosoma cruzi

  Trypanosoma cruzi infection in dogs can cause heart failure and sudden death with few treatment options available. A litter of 4 dogs living in a T cruzi endemic area were randomized to prophylaxis and nonprophylaxis groups as part of a study evaluating a modified benznidazole dosing regimen administered twice weekly to prevent T cruzi …

Two CTEGD trainees receive AHA fellowships

by Donna Huber   Baihetiya “Barna” Baierna, a cellular biology graduate student in Silvia Moreno’s laboratory, received an American Heart Association Pre-doctoral Fellowship. It will fund her training for the next two years as she studies the mitochondrion of Toxoplasma gondii. Baierna grew up wanting to follow in her mother’s footsteps as a scientist. “My …

Genomic and virulence analysis of in vitro cultured Cryptosporidium parvum

  Recent advances in the in vitro cultivation of Cryptosporidium parvum using hollow fiber bioreactor technology (HFB) have permitted continuous growth of parasites that complete all life cycle stages. The method provides access to all stages of the parasite and provides a method for non-animal production of oocysts for use in clinical trials. Here we …

Regulation of Calcium entry by cyclic GMP signaling in Toxoplasma gondii

  Ca2+ signaling impacts almost every aspect of cellular life. Ca2+ signals are generated through the opening of ion channels that permit the flow of Ca2+ down an electrochemical gradient. Cytosolic Ca2+ fluctuations can be generated through Ca2+ entry from the extracellular milieu or release from intracellular stores. In Toxoplasma gondii, Ca2+ ions play critical …