Jean-Louis Chiasson, MD
Professor of Medicine
Dr Jean-Louis Chiasson is currently Full Professor of Medicine at the Universit� de
Montr�al. He is Head of the Research Group on Diabetes and Metabolic Regulation at the Research Center of the
Centre hospitalier de l'Universit� de Montr�al (CRCHUM).
Dr Chiasson obtained his MD at Universit� Laval in Quebec City in 1967. He did his
specialty training in Internal Medicine at Univesit� Laval and in Endocrinology at McGill University. He then
did a research Fellowship in Diabetes at Vanderbilt University in Nashville Tennessee. In 1978, he was
appointed Assistant Professor in the Department of Medicine at Vanderbilt University. In 1980, he moved to
Montreal as a Professor in the Department of Medicine at the Universit� de Montr�al and as an Endocrinologist
at H�pital H�tel-Dieu, now part of the Centre hospitalier de l'Universit� de Montr�al.
Dr Chiasson's research interest includes the regulation of carbohydrate metabolism in
health and diabetes as well as the development and evaluation of new strategies for the treatment and
prevention of diabetes and its vascular complications. He has contributed over 200 scientific publications
and lectures nationally and internationally on various topics on diabetes mellitus, its pathogenesis, its
treatment and its prevention.
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Selected Scientific Contributions
Dr Chiasson has contributed significantly in characterizing the role of insulin
and glucagon in the regulation of basal glycogenolysis and gluconeogenesis using arterio-venous
catherization and isotopic techniques in healthy dogs and humans. He developed a double-isotope technique
to measure gluconeogenesis in humans. Most of this work was done between 1972 and 1980. It still remains a
major contribution to our understanding of the regulation of those 2 metabolic processes.
He has contributed significantly in characterizing the hormonal regulation of
glycogen metabolism in rat skeletal muscle using hindlimb perfusion technique. Most of these studies
were done between 1980-1990. These contributions resulted in a better understanding of the hormonal regulation
of skeletal muscle glycogen metabolism.
Over the last 20 years, he contributed in the development and validation of algorithms for
the adjustment of insulin doses for intensive insulin therapy in IDDM patients using CSII or multiple insulin
injections. He developed and validated a computer-program to assist the patients in the adjustment of their
insulin doses. These studies have helped the diabetic patients to improve their glycemic control and,
therefore, their quality of life.
In the 1990s, he contributed in characterizing glucose turnover in healthy or diabetic
human subjects. He characterized glucose turnover during pregnancy as well as during labor. He also
characterized the role of insulin and glucagon during moderate intensity exercises in healthy subjects.
Furthermore, he developed and validated algorithms for the adjustment of premeal insulin doses for subjects
with type 1 diabetes who do postprandial exercise. All these studies have contributed to a better
understanding of the homeostasis of glucose metabolism in health and diabetes.
Over the last 20 years, he contributed to the concept of post-prandial hyperglycemia
as a risk factor for diabetes and its vascular complication. As principal investigation of a Canadian
randomized trial, he has shown that decreasing post-prandial hyperglycemia using an α-glucosidase
inhibitor, acarbose, could improve glycemic control in diabetic subjects and improve insulin sensitivity
in diabetic subjects as well as in subjects with impaired glucose tolerance (IGT). Based on these
observations, he coordinated an international study, the STOP-NIDDM Trial, on the prevention of type 2
diabetes in IGT subjects. It was shown that acarbose could decrease the risk of diabetes by 36%.
Furthermore, decreasing post-prandial hyperglycemia in IGT subjects was also associated with a reduction in
the risk of CVD by 49%. He is currently involved in a larger study specifically looking at the effect of
acarbose on cardiovascular events in subjects with IGT and coronary disease, the ACE trial.
Most significant Publications
1) Chiasson J-L, Atkinson R, Cherrington AD, Sinclair-Smith BC, Lacy WW and Liljenquist JE. Effect of
fasting on gluconeogenesis from alanine in non diabetic man. Diabetes 28:56-60, 1979.
2) Chiasson J-L, Germain L, Srivastava AK and Dupuis P. Hormonal regulation of glucose transport in
skeletal muscle during exercise in normal and diabetic rats. Metabolism 33:617-621, 1984.
3) Lecavalier L, Havrankova J, Hamet P and Chiasson J-L. Effects of continuous subcutaneous insulin
infusion versus multiple injections on insulin receptors in insulin-dependent diabetics. Diabetes Care
4) Chiasson J-L, Josse RG, Gomis R, Hanefeld M, Karasik A and Laakso M for The STOP-NIDDM Trial Research Group.
Acarbose can prevent the progression of impaired glucose tolerance to type 2 diabetes mellitus: Results
of a randomised clinical trial, The STOP-NIDDM Trial. The Lancet 359:2072-2077, 2002.
5) Boukhors Y, Langelier H, Soultan M, Lacroix A and Chiasson J-L. The use of information technology for
the management of intensive insulin therapy in type 1 diabetes mellitus. Diabetes & Metabolism
6) Chiasson J-L, Josse RJ, Gomis R, Hanefeld M, Karasik A and Laakso M for The STOP-NIDDM Research Group.
Acarbose treatment reduces the risk of cardiovascular disease and hypertension in subjects with
impaired glucose tolerance: The STOP-NIDDM Trial. JAMA 290:486-494, 2003.
7) Holman R, Bethel MA, Chan J, Chiasson J-L, Doran Z, Ge J, Gerstein H, Huo Y, Lipyanage W, McMurray JJ,
Ryden L, Schröder S, Tuomilehto J, Yang W, Hu D, Pan C. Rationale, design, and organization of
the Acarbose Cardiovascular Evaluation (ACE) trial. Amer Heart J 168:23-29, 2014.
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