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Research Lab Results for energy metabolism

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  • Guang William Wong Lab

    Principal Investigator:
    Guang Wong, Ph.D.
    Physiology

    The Wong Lab seeks to understand mechanisms employed by cells and tissues to maintain metabolic homeostasis. We are currently addressing how adipose- and skeletal muscle-derived hormones (adipokines and myokines), discovered in our lab, regulate tissue crosstalk and signaling pathways to control energy metabolism. We use transgenic and knockout mouse models, as well as cell culture systems, to address the role of the CTRP family of hormones in physiological and disease states. We also aim to identify the receptors that mediate the biological functions of CTRPs.

    Research Areas: energy metabolism, insulin resistance, hormones, diabetes, metabolic homeostasis
  • MR Research Laboratory

    Lab Website

    The MR Research Laboratory focuses on developing and applying nuclear magnetic resonance (NMR) techniques and on measuring energy metabolites and metabolic fluxes with phosphorous (31P) and proton (1H) MRS in patients with ischemia, infarction and heart failure.

    Specific studies include: Phosphorus MR studies of myocardial energy metabolism in human heart: We have used spatially localized phosphorus MR spectroscopy (MRS) to noninvasively measure high-energy phosphate metabolites such as ATP (adenosine triphosphate) and phosphocreatine (PCr) in the heart. The PCr/ATP ratio can change during stress-induced ischemia, and a protocol for stress-testing in the MR system has been developed which can detect the changes noninvasively in the anterior wall. Additionally, we've developed methods for noninvasively measuring the creatine kinase (CK) ATP energy supply and used it to measure the CK ATP energy supply in the healthy heart at rest and exercise, in human myocardial infarction, and in ...human heart failure.

    Interventional MRI technology: We are developing an RF dosimeter that measures incident-specific absorption rates applied during MRI independent of the scanner and developing MRI-safe internal detectors for higher field use. Outcomes of this research include the "MRI endoscope" that provides real-time, high-resolution views of vessel anatomy and a radiometric approach to detect any local heating associated with the device.
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    Research Areas: infarction, magnetic resonance, creatine kinase metabolism, heart failure, MRI, ischemic disease, nuclear magnetic resonance
  • Weiss Lab

    Lab Website
    Principal Investigator:
    Robert Weiss, M.D.
    Medicine

    The Weiss Lab, which features a multi-disciplinary team at Johns Hopkins as well as at Cedars Sinai Medical Center in Los Angeles, is dedicated to identifying the most important clinical, genetic, structural, contractile and metabolic causes of sudden cardiac death as well as the means to reverse the underlying pathology and lower risk.

    Current projects include research into energy metabolism in human heart failure and creatine kinase metabolism in animal models of heart failure.

    Robert G. Weiss, MD, is professor of medicine, Radiology and Radiological Science, at the Johns Hopkins University.

    Research Areas: energy metabolism, creatine kinase metabolism, imaging, heart failure, aging, cardiology, sudden cardiac death
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