Cerebral Aneurysm Research Lab

Cerebral Aneurysm Research Lab

Cerebral aneurysms are common vascular lesions seen in up to 5 percent of the population, that, when ruptured, can lead to catastrophic consequences with up to 50 percent mortality and morbidity. The cerebral aneurysm research lab aims to further the understanding of molecular pathways underlying cerebral aneurysm formation in order to induce repair and prevent rupture. Current research efforts are directed by resident Kamil W. Nowicki, MD, PhD, under the joint mentorship of Robert M. Friedlander, MD, and Bradley Gross, MD. Techniques and models used in the lab depend heavily on molecular cell biology, animal surgeries and biomedical engineering to study immune cell behavior in response to chemokines and their interactions with hemodynamic shear stress.

Current projects include:

Role of Platelets in Cerebral Aneurysm Formation and Healing
This project is actively exploring the role of platelets and inflammatory cytokines released by platelets in cerebral aneurysm formation. Preliminary data suggests that platelets have opposing effects in cerebral aneurysm formation and healing. Current efforts are directed on using small molecule inhibitors in preventing aneurysm formation. This work is being supported by two grants from the Brain Aneurysm Foundation.

Role of Hemodynamic Shear Stress in Cerebral Aneurysm Formation
This study utilizes a novel in vitro model that simulates flow conditions within human aneurysms to induce inflammation and secretory chemokine response. In previous work, the authors showed that hemodynamic shear stress induces aneurysm formation via interleukin-8 and CXCL-1 mediated neutrophil inflammatory response (PMID: 25225207). In a follow-up paper, they were able to show that this inflammatory response results in M1/M2 macrophage imbalance, driving aneurysm formation (PMID: 28196918).

Biomarker Discovery and Platform Development
Future study that will focus on biomarker discovery to arrive at a blood test for cerebral aneurysm formation.

Support

We would like to thank the Brain Aneurysm Foundation, the National Institutes of Health, and the University of Pittsburgh for their generous support of research being conducted in the lab.