Faculty: Paul Dorian, MD, MSc, FRCP(C)

Paul Dorian, MD, MSc, FRCP(C)Paul Dorian, MD, MSc, FRCP(C)
Professor, Pharmacology
Director, Division of Cardiology
University of Toronto

General Research Area: Clinical Pharmacology of Antiarrhythmic Drugs
Effect of Antiarrhythmic Drugs on Cardiac Refractoriness, Atrial and Ventricular Fibrillation and Defibrillation


Dr Dorian's laboratory is investigating the mechanisms of the effect of polyunsaturated fatty acids ( PUFAs) on atrial fibrillation and cardiac remodeling in response to stress. We are also studying the cellular, biochemical, histologic, electrophysiologic, and gene transcription and translation effects of PUFAs in cardiac tissues.

Separate experiments in the laboratory study the effects of antiarrhythmic drugs on ventricular fibrillation and cardiac arrest resuscitation.

Selected Recent Publications:

Ramadeen A, G Laurent, CC dos Santos, X Hu, KA Connelly, BJ Holub, I Mangat, P Dorian. n-3 Polyunsaturated Fatty Acids Alter Expression of Fibrotic and Hypertrophic Genes in a Dog Model of Atrial Cardiomyopathy. Heart Rhythm. 2010. [in press].

Laurent G, H Leong-Poi, E Tarulli, G Moe, X Hu, PP So, A Ramadeen, L Doumanovskaia, A Konig, J Hennan and P Dorian. 2009. Effects of Chronic Gap Junction Conduction-Enhancing Antiarrhythmic Peptide GAP-134 Administration on Experimental Atrial Fibrillation in Dogs. Circulation:Arrhythmia and Electrophysiology. Published Online: February 13 2009. DOI: 10.1161/CIRCEP.108.790212.

Jenkins DJ, Josse AR, Beyene J, Dorian P, Burr ML, LaBelle R, Kendall CW, Cunnane SC. Fish-oil supplementation in patients with implantable cardioverter defibrillators: a meta-analysis. CMAJ. 2008 Jan 15; 178(2):157-64. Review. 

Laurent G, H Leong-Poi, I Mangat, V Korley, A Pinter, X Hu, PP So, A Ramadeen, P Dorian. Influence of ventriculo-atrial timing on hemodynamics and symptoms during supra-ventricular tachycardia. J Cardiovasc Electrophys. 2008; 20:176-181.

Laurent G, Moe GW, Hu X, Leong-Poi H, Connelly KA, So PP, Ramadeen A, Doumanovskaia L, Konig A, Trogadis J, Courtman DW, Strauss B, Dorian P. Experimental studies of atrial fibrillation: Comparison of two pacing models. Am J Physiol Heart Circ Physiol. 2008 Jan 4. [Epub ahead of print] 

Laurent G, Moe G, Hu X, Holub B, Leong-Poi H, Trogadis J, Connelly K, Courtman D, Strauss BH, Dorian P. Long chain n-3 polyunsaturated fatty acids reduce atrial vulnerability in a novel canine pacing model. Cardiovasc Res. 2008 Jan 1; 77(1):89-97. Epub 2007 Sep 20. 

Morrison LJ, Long J, Vermeulen M, Schwartz B, Sawadsky B, Frank J, Cameron B, Burgess R, Shield J, Bagley P, Mausz V, Brewer JE, Dorian P. A randomized controlled feasibility trial comparing safety and effectiveness of prehospital pacing versus conventional treatment: 'PrePACE' Resuscitation. 2008 Mar; 76(3):341-349. Epub 2007 Oct 22.

Contact Address:

St. Michael's Hospital 
Divison of Cardiology 
Rm 6-050 Queen Wing 
30 Bond Street 
Toronto, Ontario 
M5B 1W8 
Phone: [416]864-5104 
Email: dorianp@smh.ca