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Alexa Sauvagere

Hello, my name is Alexa.

Targeting deubiquitinating enzymes and ubiquitin pathway modulators to enhance host defense against bacterial infections

The rise of antibiotic-resistant bacterial pathogens poses a critical global health challenge, necessitating innovative therapeutic strategies. This study explores host-targeted therapies by focusing on deubiquitinating enzymes (DUBs), key regulators of the ubiquitin-proteasome system (UPS) that mediate host-pathogen interactions. Using Salmonella-infected macrophages, we screened a UPS-targeted compound library and identified several compounds that enhanced bacterial clearance without affecting host cell viability.

Biofilm development in three-dimensional models infected with Trichophyton rubrum

Dermatophytes are keratinophilic filamentous fungi that cause dermatophytosis, and the main etiological agents can be anthropophilic and zoophilic. Several virulence factors are involved in the pathogenesis of dermatophytosis, including the formation of fungal biofilms. In this context, three-dimensional (3D) models, such as spheroids and reconstructed human skin (RHS), have gained prominence, as they more accurately emulate fungus-host interactions, closely resembling physiological conditions.

Solvent-, enzyme-, and structural-dependence of phenyl-substituted methyl carbamate inhibition of acetylcholinesterase

This study explored how dilution protocols, enzymes, and solvents affected the performance of 2- and 3-phenyl substituted methylcarbamates with varying selectivity for Anopheles gambiae acetylcholinesterase (AgAChE). Protocol A was 100-fold suspension in buffer of a 0.1 M DMSO stock solution, followed by serial buffer dilutions to give declining DMSO in parallel with the inhibitor. Protocol B was identical to A except that the initial stock concentration was 0.01 M.

Bovine Viral Diarrhea Virus-1 (Pestivirus bovis) Associated with Stillborn and Mummified Fetuses in Farmed White-Tailed Deer (Odocoileus virginianus) in Florida

Bovine viral diarrhea virus (BVDV) is a globally significant pathogen affecting both domestic livestock and wildlife, including white-tailed deer (WTD; Odocoileus virginianus). While experimental infections have demonstrated WTD susceptibility to BVDV, natural infections and associated reproductive outcomes remain scarcely documented. Here, we report the first confirmed case of naturally occurring BVDV-1 infection associated with fetal mummification in farmed WTD in Florida.

Evaluation of Mosquito Blood Meals as a Tool for Wildlife Pathogen Surveillance

Mosquito blood meals provide a biological sample of host blood which can then be used in downstream applications including host–pathogen detection. We conducted DNA barcoding to identify the host species of blood meals from 4557 blood engorged mosquitoes collected in south central Florida, USA. We identified 314 blood meals from invasive wild pigs, 219 wild turkey blood meals, and 1046 white-tailed deer blood meals.

Development of an electronic health record-based Human Immunodeficiency Virus (HIV) risk prediction model for women, incorporating social determinants of health

Human Immunodeficiency Virus (HIV) pre-exposure prophylaxis (PrEP) prevents HIV transmission but has low uptake among women. Identifying women who could benefit from PrEP remains a challenge. This study developed a women-specific model to predict HIV risk within a year using electronic health record (EHR) data and social determinants of health (SDoH).

Oyster cooking practices in the United States-based restaurants—A survey

Despite longstanding oyster cooking recommendations, outbreaks associated with cooked oysters still occur. A survey of U.S.-based restaurants was conducted to investigate common cooking practices, including steaming, baking, and roasting. Target restaurants were identified using Standard Industrial Classification (SIC) codes and surveyed through live phone interviews and online.