Associate Professor, Immunobiology

Kristian Doyle earned his PhD from Oregon Health & Science University in 2007, developing novel therapeutics for stroke in the laboratory of Mary Stenzel-Poore. He then trained as a Postdoctoral Scholar at Stanford University under the mentorship of Marion Buckwalter, researching the role of TGFbeta signaling after stroke and developing a model of post-stroke dementia. Kristian Doyle started as an Assistant Professor at the University of Arizona in 2013.

Graduate Student

Danielle Becktel received her Bachelor of Science degree in Biology from Butler University in 2016. She is currently pursuing a PhD in Molecular Medicine – Immunobiology, with a minor in Cancer Biology, at the University of Arizona. In 2018, she joined the Doyle lab to investigate the chronic production of degradative enzymes in the area of liquefaction following stroke. In her spare time, Danielle enjoys hiking, camping, and playing board games with friends.

Research Technician

Kylie started in the lab in May 2018 and is working to uncover causes of post-stroke dementia. Kylie is pursuing a degree in Neuroscience and Molecular and Cellular Biology at the University of Arizona. When Kylie graduates she plans on going to medical school.

Research Technician

Jen Frye received her Bachelor’s Degree in Ecology and Evolutionary Biology from The University of Arizona. In the Doyle lab, Jen employs her extensive research background to investigate the inflammatory response to stroke in humans as well as different rodent models. In her spare time, Jen enjoys football, wakeboarding, and spending time with her family.


Frankie Garcia is currently working toward his Bachelor’s Degree in Neuroscience and Mathematics at the University of Arizona. In the Summer of 2019, Frankie joined the Doyle lab as an Undergraduate Research Assistant to help with projects that focus on post-stroke mixed dementia and Alzheimer’s pathology. When he has the chance, Frankie enjoys playing his instrument with the band, volunteering with his Fraternity, and playing tennis with his friends.

Research Technician

Rachael Hearne graduated from The University of Arizona with a Bachelor of Science degree in Nutritional Sciences in 2018. She is continuing to pursue her second Bachelor’s degree in Microbiology while assisting with research in the Doyle Lab. In her free time, Rachael enjoys gardening, cooking and hiking.

Postdoctoral Research Associate I

Sanna received her Bachelor of Science degree in Pharmacy from the University of Kuopio in Finland, she then went on to complete a Master of Science degree in Pharmacy at the University of Eastern Finland. She completed her Ph.D. at the University of Eastern Finland researching the regulation of neuroinflammation in neurodegenerative diseases. She joined the lab in October 2019 and is investigating whether enhancing mitochondrial biogenesis can improve recovery after stroke, and if the presentation of lipid antigens plays a role in driving the chronic inflammatory response to stroke. In her downtime she loves exploring the great outdoors, cooking, and is an incurable dog lover.

Research Specialist, Senior

Marco A. Tavera Garcia got his bachelor's degree in Biology in the National Autonomous University of Mexico (UNAM). He has extensive experience in conducting in vivo studies. Marco enjoys outdoor activities, basketball, football, and having time with his family.

Assistant Professor, Neurology

Vivian Nguyen earned her PhD from the University of Southern California, in which she investigated neuroprotective mechanisms of sex steroid hormones against Alzheimer’s disease (AD). She then trained as a Postdoctoral Fellow at the Buck Institute for Age Research and as a Senior Research Scientist at Stanford University, investigating signaling pathways of neurodegeneration. Vivian Nguyen moved to the University of Arizona in 2013. In her spare time, she loves to read and explore nature and historical sites in Arizona with her husband and little girl.


Omar Hussein

Undergraduate Research Assistant

Maj Krumberger

Undergraduate Research Assistant

Justine Mona

Undergraduate Research Assistant

Kristina Stepanovic

Undergraduate Research Assistant

Alex Urzua

Undergraduate Research Assistant

Amanda Chung

Master's Student

Megan Irish Hayes

Research/Laboratory Assistant

Anna Jaison
Program Aide
Jacob Zbesko
Postdoctoral Research Associate