Estradiol Regulation of Brain-Microvascular Inflammatory Responses in Sepsis

Wake Forest University Health Sciences, Winston-Salem NC

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Abstract

DESCRIPTION (provided by applicant): The objective of this K01 proposal is to establish an innovative research strategy and sound career development plan for Dr. Candice Brown to successfully transition to an independent investigator in neuroscience. The research plan implements a novel, multidisciplinary approach to test the hypothesis that the ovarian estrogen, 17¿-estradiol (E2), modifies sepsis-induced brain dysfunction by altering the inflammatory mechanisms at the brain-micro vascular interface. The experimental approach uses a cecal ligation and puncture model of sepsis-induced brain dysfunction, commonly referred to sepsis-associated encephalopathy (SAE). SAE results in neurological impairment in ~70% of sepsis patients, and therapeutic options for treatment are limited. Aim 1 will employ intravital microscopy combined with molecular biology to determine whether E2 attenuates vascular inflammation at the brain-micro vascular interface. Aim 2 will use magnetic resonance imaging combined with immunocytochemistry to determine whether E2 attenuates cerebral edema and metabolic dysfunction in the early and late stages of sepsis. The career development plan has four specific aims designed to achieve short and long term career goals. These include: 1) Mastering surgical techniques and microscopy imaging tools; 2) Acquiring competency in MRI and its capabilities to use as tool to study acute brain dysfunction; 3) Improving presentation, publication, and craftsmanship skills, and 4) Gaining faculty development skills to become a productive science-citizen in academia. Completion of Research and Career Aims will provide broad competencies and a valuable set of tools to establish a productive independent research program and enhance the diversity of the neuroscience community at Wake Forest School of Medicine.