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The Brody School of Medicine at East Carolina University
The Department of Internal Medicine

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Timothy A. Johnson, PhD

Division of Cardiology, Department of Internal Medicine
The Brody School of Medicine
East Carolina University, Greenville, NC 27834
252.744.3527 (Office, Brody 3E-116D)
johnsonti@mail.ecu.edu


Publications and Presentations

 

1.        Kim  C.S., S. Ufer, C.M. Seagle , C.L. Engle, H.T. Nagle, T.A. Johnson , W.E. Cascio. Characterization of micromachined iridium oxide probes and application to the recording of cardiac electrograms in heart tissue. Biosensors and Bioelectronics 19:1109-1116, 2004.

 

2.        Marzouk, S.A.M., R.P. Buck, L.A. Dunlap, T.A. Johnson, W.E Cascio. Measurement of extracellular pH, K+ and lactate in ischemic heart. Anal Biochem 308:52-60, 2002.

 

3.        Johnson, T.A., R. Devlin, A. Ghio, Y.T. Huang, D.L. Costa, C.L. Engle, P. Bromberg, W.E. Cascio. Cardiopulmonary effects of nebulized residual oil fly ash in anesthetized pigs. In: INIS Monograph Series "Crucial Issues in Inhalation Research"  Mechanistic, Clinical and Epidemiologic. U. Heinrich and U. Mohr, eds, Fraunhofer IRB Verlag, Stuttgart, Germany, 2002, pg 199-212.

 

4.        Cascio, W.E., H. Yang, T.A. Johnson, B.J. Muller-Borer, J.J. Lemasters. Electrical properties and conduction in reperfused papillary muscle.  Circ Res 89:807-814, 2001.

 

5.        # Barton, C. W., W. E. Cascio, N. D. Batson, C. L. Engle, T.A. Johnson.  The effects of rates of perfusion on dominant frequency and defibrillation energy in the isolated heart. PACE 23(1):504-511, 2000.

 

6.        # Marzouk, S. A. M., S. Ufer, R. P. Buck, T.A. Johnson, L.A. Dunlap, W. E. Cascio.  Electrodeposited iridium oxide pH electrode for measurement of extracellular myocardial acidosis during acute ischemia. Anal Chem 70:5054-5061, 1998

 

7.        # Punske, B. B., W. E. Cascio, C. Engle, H.T. Nagle, L. S. Gettes, T.A. Johnson.  Quantitative characterization of epicardial wavefronts during regional ischemia and elevated extracellular potassium ion concentration.  Annals of Biomedical Engineering 26:1010-1021, 1998

 

8.        # Hyatt, C.J., J.J. Lemasters, B.J. Muller-Borer, T.A. Johnson, W.E. Cascio.  A superfusion system to study border zones in confluent cultures of neonatal rat heart cells.  Am J Physiol 274 (Heart Circ Physiol) 43:H2001-2008, 1998

 

9.        # Yim, P.J., B. Ha, C. Branch, G.W. Henry, T.A. Johnson, C.L. Lucas.  The diastolic shape of the right ventricle of the heart. Anatomical Record 250:316-324, 1998.

 

10.     Nichols, T.C., D.A. Bellinger, R.L. Reddick, G.G. Koch, J.L. Sigman, G. Erickson, T. du Laney, T. Johnson, M.S. Read, T.R. Griggs.  von Willebrand factor does not influence atherogenesis in arteries subjected to altered shear stress.  Arteriosclerosis, Thrombosis and Vasc Biol 18:323-330, 1998.

 

11.     Cosofret, V.V., W. W. Olson, # S.A.M. Marzouk, M. Erdosy, T.A. Johnson, R.P. Buck.  Calcium selective polymetric membranes for microfabricated sensor arrays.   Anal Letters 29:725-743, 1996.

 

12.     Cosofret, V.V., M. Erdosy, J.S. Raleigh, T.A. Johnson, R.P. Buck, M.R. Neuman. Aliphatic polyurethane as a matrix for pH sensors: Effects of native sites and added proton carrier on electrical and potentiometric properties.  Talanta 43:143-151, 1996.

 

13.     Cascio, W.E., T.A. Johnson, L.S. Gettes.  Electrophysiologic changes in ventricular myocardium: I. Influence of ionic, metabolic and energetic changes. J Cardiovasc Electrophysiol 6:1039-1062, 1995.

 

14.     Muller-Borer, B.J., T.A. Johnson, L.S. Gettes, W.E. Cascio.  Failure of impulse propagation in a mathematically simulated ischemic border zone: Influence of direction of propagation and cell-to-cell electrical uncoupling.  J Cardiovasc Electrophysiol 6:1101-1112, 1995.

 

15.     Buck, R.P., V.V. Cosofret, E. Lindner, S. Ufer, M.B. Madaras, T.A. Johnson, R.B. Ash, M.R. Neuman.  Microfabrication technology of flexible membrane-based sensors for in vivo applications.  Electroanalysis 7:846-851, 1995.

 

16.     Lindner, E., V.V. Cosofret, R.P. Buck, T.A. Johnson, R.B. Ash, M.R. Neuman, W.J. Kao, J.M. Anderson.  Electroanalytical and biocompatibility studies on microfabricated array sensors. Electroanalysis 7:864-870, 1995.

 

17.     Cosofret, V.V., M. Erdosy, T.A. Johnson, D.W. Bellinger, R.P. Buck, R.B. Ash, M.R. Neuman.  Electroanalytical and surface characterization of encapsulated implantable membrane planar microsensors.  Anal Chemica Acta 314:1-11, 1995.

 

18.     Smith, W.T., W.F. Fleet, T.A. Johnson, W.E. Cascio.  The I-B phase of ventricular arrhythmias in ischemic in situ porcine heart is related to changes in cell-to-cell electrical coupling.   Circulation 92:3051-3060, 1995.

 

19.     Smith W.T., W.F. Fleet, L.S. Gettes, T.A. Johnson, J.J. Lemasters, W.E. Cascio.  Sodium/hydrogen exchange inhibition by 5-(N,N-dimethyl)-amiloride does not attenuate reperfusion injury in a regionally ischemic in-situ porcine heart. fax UNC Student Medical Journal 10:5-11,1995.

 

20.     Cosofret, V.V., M. Erdosy, T.A. Johnson, R.P. Buck, R.B. Ash, M.R. Neuman. Microfabricated sensor arrays sensitive to pH and K+ for ionic distribution measurements in the beating heart. Anal Chem 67:1647-1653, 1995.  (Featured Article and Cover)

 

 


 


 
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