Investigating Peripheral Cutaneous Innervation of Healing Thermal Burn Wounds
Investigating Peripheral Cutaneous Innervation of Healing Thermal Burn Wounds
About Me
Hi! I’m Casey, I am a biology and neuroscience major from Potomac, MD. I have been conducting research for 3 years at the Firefighters’ Burn and Surgical Research Laboratory in Washington, DC, studying chronic pain and itch, wound healing, and post-burn scar. My favorite class at Macalester was Developmental Biology, where I was first introduced to the world of biological research and experimental design, and where I got my first experiences designing my own studies. I am a pre-medical student who is excited by the opportunity to work in patient care, but also drawn to basic science research and the curiosity of understanding the mechanisms that shape disease, healing, and patient experience. Outside of the lab I am a co-captain of the varsity swim and dive team, teach as a Supplemental Instructor for Cell Biology and Cellular and Molecular Neuroscience, and enjoy club volleyball and water polo.
Abstract
Burn injuries are among the most physiologically and psychologically disruptive forms of trauma, and their sensory consequences are a major contributor to long-term morbidity. Burn patients often describe sensations that do not match what the skin looks like, including burning, prickling, hypersensitivity, numb patches, or relentless itch that is hard to relieve, despite their wounds appearing “healed”. One potential reason for this is that burns disrupt the skin’s smallest sensory nerve endings, the fine fibers that normally reach into the epidermis to detect temperature, irritation, and pain. When these fibers are damaged, they may not regrow properly, which can leave the healed skin sending mixed or exaggerated signals that contribute to chronic discomfort. This work focuses on building a reliable way to measure those changes. A standardized protocol was developed to punch biopsy skin, immunostain tissue to label nerve fibers and key molecular signals, and image the sections with confocal laser microscopy so nerve structure and neuropeptide expression can be quantified. The initial data presented come from a validation study confirming two core features of damaged skin, altered small-fiber innervation and shifted neuropeptide signaling. This study lays the groundwork that could eventually help flag patients at risk for chronic symptoms and point toward new targets for therapies aimed at post-burn pain and itch.