Brain Development in Hydrocephalus

One focus of our research is to characterize the development of the stem cell niche, the ventricular-subventricular zone (V-SVZ), that lines the lateral wall of the lateral ventricles of the brain. During development, the stem cell niche generates new neurons and supporting glial cells to neighboring brain regions, and ependymal cells to line the ventricle walls. The ependymal lining consists of a single layer of ciliated epithelial cells, which play a role in regulating cerebrospinal fluid (CSF) and interstitial fluid (ISF) homeostasis within the ventricles and the brain, which facilitates CSF circulation and metabolic waste clearance essential to a healthy ventricular system. Fetal hydrocephalus is a condition characterized by accumulation of CSF, expansion of the lateral ventricles, and associated cognitive defects. Alterations in ventricle volume in the developing brain pose a significant problem, as they occur during the period of active stem cell proliferation, neurogenesis, neuroblast migration and ependymal cell formation, ependymogenesis. We are investigating how these developmental processes are affected in the hydrocephalic brain. To characterize brain development in hydrocephalus, we use a combination of immunohistochemistry and ventricle volume analyses to generate 4D spatiotemporal maps of ventricle development and associated stem cell niche dynamics. These spatiotemporal maps will provide valuable information to improve diagnostic tools and develop appropriate therapies for hydrocephalic patients. 

3D images of the mouse brains that were scaled to each other.
Cellular Development of the Ependymal Cells on the Lateral Wall of the Lateral Ventricles
image that shows the cellular arrangement of the lateral walls in the lateral ventricles
depiction of the how the lateral wall whole mounts are made

Acabchuk, R.L., Sun, Y., Wolferz,, R., Eastman, M.B., Lennington, J.B., Shook, B.A., Wu, Q., Conover, J.C. 3D Modeling of the Lateral Ventricles and Histological Characterization of Periventricular Tissue in Humans and Mouse. J. Vis. Exp. (99), e52328, doi:10.3791/52328 (2015). (see video above)

 

CT2

A Concussion Tracking ‘App’ developed in the Conover lab in collaboration with Dr. Steve Demurjian, CSE

CT2 is an application (app) developed in the Conover/Demurjian labs which is intended to monitor and provide data relating to concussions of high school student athletes with the goal of developing an outcomes-based probabilistic model for mild traumatic brain injury recovery and treatment. Use of the app allows for the direct transfer of information from a coach, athletic trainer, or nurse to a physician. This diagnostic aid provides a wealth of information that facilitates rapid care and diagnosis, contributing to well-informed return-to-learn and return-to-play decisions. Additionally, the anonymized data from this application is analyzed by machine learning algorithms for patterns in symptomology that translate to outcome patterns and recovery trajectories of student athletes. This will facilitate preemptive care for concussed athletes, and improve the quality and coordination of care across all healthcare providers involved in treating a concussed athlete.