PhD Student Profiles

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Physiological Sciences PhD Students

Please click on the name of each student to learn more about them.

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Rachel Battershell, PS PhD Student

Email: rbattershell@arizona.edu

Advisor: Sean Limesand, Ph.D.

Research Interests: Developmental origins of health and disease, metabolism, cardiovascular health, and endocrinology

Personal Interests: Running, reading, and playing guitar 

Publications: 

Hamilton S, Terentyeva R, Veress R, Perger F, Nichtova Z, Bannister M, Wang J, Quiggle S, Battershell R, Gorr MW, Györke S, Choi BR, George CH, Belevych AE, Csordás G, Terentyev D. Increased Intermembrane Space [Ca2+] Drives Mitochondrial Structural Damage in CPVT. Circ Res. 2025 Oct 23. doi: 10.1161/CIRCRESAHA.125.326841. Epub ahead of print. PMID: 41127903.

Daniel Chrisenberry, PS MS Student

Email: dchrisenberry@arizona.edu 

Advisors: Mingyu Liang, Ph.D.

Research Interests: Vascular physiology, genetics, stem cell culturing, polymorphisms involved in development of hypertension

Personal Interests: I love exercising, nearly all sports, board games, trivia nights, and teaching physiology!

 

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Catherine Ellis, PS PhD Student

Email: ceellis@arizona.edu

Advisor: Pawel Kiela, DVM, PhD

Research Interests: Relationships between diet, gastrointestinal function, inflammation and metabolism.

Personal Interests: Playing piano and classical guitar, painting, drawing, walking, cooking, being surrounded by nature.

Publications: 

Murillo F, Arrieta M, Ellis C, Dobles E. (2018). Homeostasis del magnesio: Implicaciones fisiológicas y patológicas. Revista médica de la Universidad de Costa Rica 11(2). 

Francisco Espinoza

Email: espinoazf@arizona.edu

Advisor: Christopher Arellano, Ph.D.

Research Interests:  Intersection of gait rehabilitation, neuromechanics, and sports performance.

Personal Interests:  A dedicated sports fanatic. Whether it’s soccer, football, or just about anything competitive, always ready to join in or cheer from the sidelines.

Awards: University Fellow, 2025-26

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Keila Espinoza

Email: espinoza5@arizona.edu

Advisor: Ashley Snider, PhD 

Research Interests: Immune cell mediated inflammation, gastrointestinal distress, inflammatory bowel disease, sphingolipid metabolism, sphingolipids in immune cells, neutrophil and macrophage dys/function, sex differences in disease 

Personal Interests: Collecting pins, spending time with friends and family, board/card/video games, drawing and writing, dancing, karaoke 

Awards:  

2025 - Poster Award, ALVSE Research Showcase, ARCS Foundation Scholar Award, Phoenix Chapter,  Certificate of Recognition, FEBS/13th International Ceramide Conference;  FEBS Youth Travel Fund Award, FEBS/13th International Ceramide Conference;              Herbert E. Carter Travel Award, University of Arizona GIDPAC

2024 - Travel Award, Cancer Research Training & Education Coordination, University of Arizona Cancer Center; Steven M. Horvath Research Recognition Award, American Physiological Summit; Poster Award, University of Arizona Translational Medicine Symposium

2023 - Poster Award, University of Arizona GIDP Research Showcase, Travel Award, 12th International Ceramide Conference, 

2022 - Training Grant, NIH T32 Initiative for Maximizing Student Development,  Fellowship Award, University of Arizona Graduate Access

Publications: 

Espinoza KS, Snider AJ. Therapeutic Potential for Sphingolipids in Inflammatory Bowel Disease and Colorectal Cancer. Cancers (Basel). 2024 Feb 15;16(4):789. doi: 10.3390/cancers16040789. PMID: 38398179; PMCID: PMC10887199.

Espinoza KS, Hermanson KN, Beard CA, Schwartz NU, Snider JM, Low BE, Wiles MV, Hannun YA, Obeid LM, Snider AJ. A novel HSPB1S139F mouse model of Charcot-Marie-Tooth Disease. Prostaglandins Other Lipid Mediat. 2023 Dec;169:106769. doi: 10.1016/j.prostaglandins.2023.106769. Epub 2023 Aug 23. PMID: 37625781; PMCID: PMC10843462.

 

Email: nferguson@arizona.edu

Advisor: Maya Kaelberer, PhD

Research Interests:  Gut-brain signaling, metabolic disorders, sensory neuroscience.

Personal Interests:  Hiking, cooking, traveling.

Awards: Graduate Awards: T32 Cardiovascular Training Grant (2026); Scholarship to attend the Marine Biological Laboratory Neurobiology Course (2025)

Undergraduate Awards: Silver Award, W.A. Franke Honors College, The University of Arizona (2023); Galileo Circle Scholarship, College of Science, The University of Arizona (2022); John G. Hildebrand Scholarship, Neuroscience and Cognitive Science Department, The University of Arizona (2022); Academic Year Highest Academic Distinction, The University of Arizona (2020, 2021, 2022, 2023); Dean’s List with Distinction, College of Science, The University of Arizona (2019, 2020, 2021, 2022, 2023); AZ Wildcat Tuition Award, $120,000 Scholarship, The University of Arizona  (2019 -  2023)

Publications: 

Hasnah R, Makhlouf M, Zambon M, Arietti M, Ferguson NC, Moussa EA, Kiesling Altún YG, Scialdone A, Saraiva LR, Kaelberer MM. A sensory map of the gastrointestinal tract. In review. 2025

Physiological Impacts of a High-Fat Diet on the Retina in Male and Female Mice, Abstract published in the Undergraduate Research Opportunities Consortium’s 2022 Abstract Review. The University of Arizona, Tucson, AZ, August 2022.

 

Email: temarafletcher@arizona.edu

Advisor: Rotations

Research interests:  Metabolism, treatment interventions, translational medicine 

Personal interests: Gardening, Reading, Biking, Baking & Cooking

Awards: Initiative for Maximizing Student Development (IMSD) / NIH T32

Publications:

Bruner, K.R., Byington, I.R., Marx, T.J. et al. Glucagon receptor signaling is indispensable for the healthspan effects of caloric restriction in aging male mice. GeroScience (2025). https://doi.org/10.1007/s11357-025-01899-w

Marx, T. J., Bruner, K., Ghimire, S., Fletcher, T., & Stern, J. H. (2025). 12 weeks of voluntary wheel running restores glucagon sensitivity in middle-aged mice [Preprint]. bioRxiv. https://doi.org/10.1101/2025.05.23.655872

 

 

Email:  williamkwon@arizona.edu

Advisor:  Jared Churko, PhD

Research Interests:   Cardiology, Physiology

Awards: T32 Ruth L. Kirschstein Institutional National Research Service Award 

Publications

Iwanski JB, Lawal OS, Kwon WT, Vazquez I, Churko JM. Minimal Component, Protein-Free, and Cost-effective Human Pluripotent Stem Cell Cardiomyocyte Differentiation. Curr Protoc. 2025 Feb;5(2):e70099. doi: 10.1002/cpz1.70099. PMID: 39932462; PMCID: PMC11834755.

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Jozie Mazzone, PS PhD Student

Email: jmazzone@arizona.edu

Advisor: Fiona Bailey, PhD

Research Interests: Blood pressure regulation, sex-differences in cardiovascular disease, exercise.

Personal Interests: My animals, puzzles, soccer, writing, & chocolate.

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Masa Miscevic, PS PhD Student

Email: mmiscevic@arizona.edu

Advisor: Haijiang Cai, Ph.D.

Research Interests: Neural circuits in gut-brain communication, neural circuits of eating behaviors

Personal Interests: Social Latin dances, hiking (nature and urban), visiting local coffees shops and bookstores, learning about art and art history, community service.

Publications: 

Chvilicek MM, Seguin A, Lathen DR, [], Maša Miščević, []. Large analysis of genetic manipulations reveals an inverse correlation between initial alcohol resistance and rapid tolerance phenotypes. Genes, Brain and Behavior. 2024;23(1):e12884. doi:10.1111/gbb.12884

 

Email: dayannaramunoz@arizona.edu

Advisor: Richard Simpson, Ph.D.

Research Interests: Exercise Physiology, Performance, & Exercise Immunology

Personal Interests: Running, lifting, and coaching.

Publications: 

Muzaffar-Khan, A., Munoz, D. et al. Design and Testing of PEM hydrolysis system for producing Hydrogen and Oxygen propellants for CubeSat Applications. Aerospace Research Central (2021). https://arc.aiaa.org/doi/10.2514/6.2021-4185.

Geng, J., Kim, K., Zhang, J. et al. Stochastic transport through carbon nanotubes in lipid bilayers and live cell membranes. Nature 514, 612–615 (2014). https://doi.org/10.1038/nature13817.

Awards: NIH T32 Initiative for Maximizing Student Development (IMSD)

 

Email: rplett@arizona.edu

Advisor: Scott Boitano, Ph.D.

Research Interests:  Respiratory physiology, cellular physiology, asthma, protease-activated receptor-2 (PAR2)

Personal Interests: Playing hockey, sports

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Felipe Polk, PS PhD Student

 Email: fpolk@arizona.edu

Advisor: Paulo Pires, PhD

Research Interests: Vascular Physiology, Alzheimer's Disease

Personal Interests: Fishing, hiking, snowboarding, and any sport that involves a ball and a racquet.

Publications: 

Polk, F. D., Hakim, M. A., Silva, J. F., Behringer, E. J., & Pires, P. W. (2023). Endothelial KIR2 channel dysfunction in aged cerebral parenchymal arterioles. American journal of physiology. Heart and circulatory physiology, 10.1152/ajpheart.00279.2023. Advance online publication. https://doi.org/10.1152/ajpheart.00279.2023

Peters, E. C., Gee, M. T., Pawlowski, L. N., Kath, A. M., Polk, F. D., Vance, C. J., Sacoman, J. L., & Pires, P. W. (2022). Amyloid-β disrupts unitary calcium entry through endothelial NMDA receptors in mouse cerebral arteries. Journal of cerebral blood flow and metabolismofficial journal of the International Society of Cerebral Blood Flow and Metabolism, 42(1), 145–161. https://doi.org/10.1177/0271678X211039592

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