Banting and Best

Banting and Best were the pair of Canadian researchers whose 1921 collaboration led to the isolation and clinical use of insulin for the treatment of diabetes mellitus. Their work at the University of Toronto between patients, laboratory experiments, and consultations with figures from institutions such as the Rockefeller Institute for Medical Research and the Sir William Osler circle rapidly transformed approaches to endocrinology and metabolic disease. The discovery precipitated international responses from medical centers like Massachusetts General Hospital, St Thomas' Hospital, and industrial partners including Eli Lilly and Company.

Background and Early Lives

Frederick Grant Banting trained at the University of Toronto and served in the Canadian Army Medical Corps during the First World War, where he worked alongside surgeons from Royal Victoria Hospital and encountered cases that informed his interest in pancreas pathology. Charles Herbert Best graduated from the University of Toronto and had affiliations with the Toronto General Hospital and the Connaught Laboratories; he was a research assistant whose prior mentors included figures connected to the Johns Hopkins Hospital and the Harvard Medical School network. Their personal trajectories intersected with contemporary investigators such as Sir Edward Mellanby, Oskar Minkowski, Nobel Prize winners in physiology and medicine, and laboratory traditions from the Cambridge University and University of Edinburgh biomedical communities.

Discovery of Insulin

The 1921 experiments that produced an active pancreatic extract were influenced by earlier work by Paul Langerhans on pancreatic islets and by surgical observations of Minkowski linking pancreatectomy to glycosuria. Banting proposed tying off pancreatic ducts, building on techniques used at the Laboratory of Physiology, University of Toronto, and with Best performed ligation and extract preparations that produced hypoglycemic effects in pancreatectomized dogs monitored with assays used by JJR Macleod's group. The first successful extract administration and subsequent clinical trials at Toronto General Hospital involved consultations with clinicians from Addisonian and juvenile diabetes care settings, prompting rapid interest from international centers including Guy's Hospital and the Pasteur Institute.

Experimental Methods and Collaboration

The methodological platform combined surgical models from University College Hospital, biochemical fractionation techniques akin to those at the Rockefeller Institute, and emerging blood glucose assays influenced by laboratories at St Bartholomew's Hospital and industrial laboratories such as Eli Lilly and Company and Connaught Laboratories. Banting's duct-ligation surgery, Best's in vivo dog protocols, and analysis overseen by Macleod formed a cross-disciplinary team with contributions from technicians and pathologists aligned with the Ontario Provincial Laboratory and the Toronto Hospital for Sick Children. Collaborative exchanges occurred with contemporaries such as Bernhard Naunyn, Eli Metchnikoff-linked immunologists, and enzymologists at the Karolinska Institute who later adjudicated aspects of biochemical characterization.

Recognition, Controversies, and Credit Disputes

After the 1923 Nobel Prize in Physiology or Medicine was awarded to Frederick Banting and John James Rickard Macleod—a decision that provoked protest by Best, who was later recognized by institutions such as the University of Toronto and given invitations from bodies like the Royal Society—the allocation of credit triggered debates involving the Eli Lilly and Company agreements, patent arrangements managed by the Connaught Laboratories, and public narratives in outlets including the New York Times and Canadian press tied to the Toronto Star. Contemporary disputes invoked earlier contributions by Oskar Minkowski, histological work by Paul Langerhans, and biochemical purification advances by industrial researchers in Germany and France. Mediation among university administrators, representatives from the Swedish Academy, and medical societies at Royal College of Physicians meetings attempted to reconcile academic, clinical, and commercial claims.

Impact on Diabetes Treatment and Legacy

The introduction of insulin transformed clinical practice across institutions such as Johns Hopkins Hospital, Mount Sinai Hospital (Toronto), and pediatric centers at Great Ormond Street Hospital, shifting juvenile diabetes from a fatal diagnosis to a manageable chronic condition through subcutaneous injections, dosing regimens developed with help from clinicians at Massachusetts General Hospital and St Vincent's Hospital, and mass production scaled by partners like Eli Lilly and Company and Connaught Laboratories. Their work catalyzed growth in endocrinology departments at universities including Harvard Medical School, University of Chicago, and McGill University, stimulated research prizes such as the Banting Medal and institutional honors including fellowships from the Royal Society of Canada, and contributed to public health programs in provinces and nations collaborating with agencies like the League of Nations' health committees. Monuments, dedications at the University of Toronto, and continuing debates in historiography—addressed in archives at the National Archives of Canada and analyses by scholars associated with the Wellcome Trust—underscore a legacy that reshaped biomedical research, pharmaceutical industry practices, and patient care worldwide.

Category:History of medicine Category:Canadian medical researchers Category:Diabetes mellitus