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James G Dobson PhD

TitleProfessor Emeritus
InstitutionUMass Chan Medical School
DepartmentMicrobiology
AddressUMass Chan Medical School
55 Lake Avenue North
Worcester MA 01655
Phone508-856-3775
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    Other Positions
    InstitutionT.H. Chan School of Medicine
    DepartmentMedicine
    DivisionCardiovascular Medicine

    InstitutionT.H. Chan School of Medicine
    DepartmentMicrobiology


    Collapse Biography 
    Collapse education and training
    Central Connecticut State University, New Britain, CT, United StatesBSScience
    Wesleyan University, Middleton, CT, United StatesMABiology
    University of Virginia, Charlottesville, VA, United StatesPHDPhysiology

    Collapse Overview 
    Collapse overview

    Academic Background

    1965, B.S., Central Connecticut State University
    1967, M.A., Wesleyan University
    1971, Ph.D., University of Virginia

    2008 - 2010, Professor & Interim Chairman of Physiology

    2011 - Professor Emeritus

    Regulation of neurotransmitter signal transduction in the heart

    The research in this laboratory is concerned with investigating transmembrane signaling and the mechanisms which regulate cardiac muscle force development and myocardial energy utilization. Emphasis isJim Dobson Photo given to the importance of adenosinergic modulation of the regulatory mechanisms particularly upon beta-adrenoceptor stimulation. The importance of the phosphorylation-dephosphorylation of proteins involved in the regulatory processes is a keen area of interest. Of additional interest is the role of adenosine in endothelial cell proliferation, aging of the cardiovascular system and heart failure. Mainly, isolated perfused hearts, dispersed ventricular myocytes and cultured endothelial cells are used in these studies.

    The main emphasis is that by using current biochemical and molecular approaches and techniques the physiological mechanisms regulating cardiac mechanical performance and metabolism can be elucidated in the normal heart. This will foster a better understanding of how these neuro-regulatory mechanisms are altered in the diseased and aging cells that comprise the cardiovasculary system.

    Research Figure

    Adenosine and the Catecholamine Responses in Heart

      A scheme illustrating that any one of the following: catacholamine stimulation of the heart, myocardial ischemia and adult heart aging, increases the concentration of myocardial adenosine. The increased adenosine in turn reduces the Beta-adrenergic induced increases in the myocardial chronotropic, inotropic and glycogenolytic responses of the heart and enhances coronary blood flow.

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