This proposal is a natural extension of the candidate's background in Emergency Medicine and Biomedical Engineering. His unique background and passion for translational science has already contributed to animal resuscitation research. This innovative work models early post-cardiac arrest reperfusion injury in our patients, i.e. cardiovascular collapse despite initial return of spontaneous circulation (ROSC). The training program will enhance the mouse modeling already done by formally training the applicant in the best molecular biology approaches for study of nitric oxide signaling and uncoupling. The applicant will benefit from multi-disciplinary mentorship within the Emergency Resuscitation Center, building upon expertise in heart oxidant injury and adaptation, and free radical biology. The sponsors Drs. Vanden Hoek and McNally are experienced physician-scientists. They are also collaborators interested in oxidantmediated heart contractile dysfunction and death in cardiomyocyte and mouse models. This Career Development Project builds upon the strengths of the applicant, the training program and institutional support and mentorship. We hypothesize that protective hypothermia following cardiac arrest increases Akt-related constitutive nitric oxide synthase (cNOS) NO-signaling, while attenuating cNOS uncoupling and generation of damaging reactive oxygen species (ROS). Specifically, in a mouse model of cardiac arrest we will:
(Aim 1) Optimize the target temperature of protective hypothermia based on heart Akt and cNOS activity;
(Aim 2) Test the relative importance of NOS1/NOS3 in post-cardiac arrest injury, NO and ROS generation, and hypothermia protection using selective-inhibitor and knockout strategies;
and (Aim 3). Test whether hypothermia protection can be reproduced by NOS substrate/cofactor repletion strategies. The University of Chicago Department of Medicine and Section of Emergency Medicine have a track-record of successful mentoring using the K08 physician-scientist training program. The proposed training will provide Dr. Beiser with additional skills to become a leading independent physician-scientist in his field. From a layperson perspective, cardiac arrest (when the heart stops) is different than depicted on TV or the movies-most people initially resuscitated do not survive. This work will help understand how cooling the body a few degrees can actually increase a type of oxidant stress that helps the body heal itself.

Agency
National Institute of Health (NIH)
Institute
National Heart, Lung, and Blood Institute (NHLBI)
Type
Clinical Investigator Award (CIA) (K08)
Project #
5K08HL091184-05
Application #
8294612
Study Section
Special Emphasis Panel (ZHL1-CSR-O (M1))
Program Officer
Carlson, Drew E
Project Start
2008-08-20
Project End
2013-06-30
Budget Start
2012-07-01
Budget End
2013-06-30
Support Year
5
Fiscal Year
2012
Total Cost
$124,200
Indirect Cost
$9,200
Name
University of Chicago
Department
Internal Medicine/Medicine
Type
Schools of Medicine
DUNS #
005421136
City
Chicago
State
IL
Country
United States
Zip Code
60637
Li, Jing; Wang, Huashan; Zhong, Qiang et al. (2015) A novel pharmacological strategy by PTEN inhibition for improving metabolic resuscitation and survival after mouse cardiac arrest. Am J Physiol Heart Circ Physiol 308:H1414-22
Sharp, Willard W; Beiser, David G; Fang, Yong Hu et al. (2015) Inhibition of the mitochondrial fission protein dynamin-related protein 1 improves survival in a murine cardiac arrest model. Crit Care Med 43:e38-47
Deal, Nathan S; Sharp, Willard W; Orbelyan, Gerasim A et al. (2014) The emergency cardiac arrest response team (eCART): a novel strategy for improving therapeutic hypothermia utilization following out-of-hospital cardiac arrest. Resuscitation 85:1775-8
Li, Jing; Beiser, David G; Wang, Huashan et al. (2011) Therapeutic hypothermia cardioprotection in murine hemorrhagic shock/resuscitation differentially affects p38ýý/p38ýý, Akt, and HspB1. J Trauma 71:1262-70
Beiser, David G; Orbelyan, Gerasim A; Inouye, Brendan T et al. (2011) Genetic deletion of NOS3 increases lethal cardiac dysfunction following mouse cardiac arrest. Resuscitation 82:115-21
Beiser, David G; Wojcik, Kimberly R; Zhao, Danhong et al. (2010) Akt1 genetic deficiency limits hypothermia cardioprotection following murine cardiac arrest. Am J Physiol Heart Circ Physiol 298:H1761-8
Beiser, David G; Wang, Huashan; Li, Jing et al. (2010) Plasma and myocardial visfatin expression changes are associated with therapeutic hypothermia protection during murine hemorrhagic shock/resuscitation. Resuscitation 81:742-8
Beiser, David G; Carr, Gordon E; Edelson, Dana P et al. (2009) Derangements in blood glucose following initial resuscitation from in-hospital cardiac arrest: a report from the national registry of cardiopulmonary resuscitation. Resuscitation 80:624-30