A forgotten chapter in the history of the renal circulation: the Josep Trueta and Homer Smith intellectual conflict - PubMed

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A forgotten chapter in the history of the renal circulation: the Josep Trueta and Homer Smith intellectual conflict

Murray Epstein et al. Am J Physiol Renal Physiol. 2015.

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Abstract

This article reviews the pioneering and visionary contributions of the Catalan surgeon Josep Trueta (1897–1977) to the changes in renal circulation that contribute to the pathogenesis of acute renal failure (ARF). An erudite scientist with eclectic interests in physiology, orthopedics, politics, and medical history, Trueta's initial involvement in wound healing as a trauma surgeon during the Spanish Civil War and the London Blitz is what prompted him to postulate that a trauma-induced “neural effect” on the renal vasculature, with resultant renal arterial constriction could cause ARF. To test his hypothesis, Trueta assembled an experienced radiologist, a renowned physiologist, and a renal pathologist to study ARF in Oxford. They investigated the renal circulation of rabbits in response to diverse traumatic conditions by injecting a radio-opaque substance, using cine-radiography to visualize the flow of blood through the renal vasculature. Trueta's suggestion of renal cortical ischemia and diversion of blood to the less resistant medullary circulation (Trueta shunt) was criticized by Homer Smith and coworkers. In contrast to Homer Smith's data, which were derived from clearance studies and renal arteriovenous oxygen, Trueta used the diametrical opposite method of “direct” observation of the renal circulation. Their differing methodologies, direct visualization of the renal circulation as opposed to inferred computations from clearance studies, accounts for some of their conflicting theories. Nevertheless, the proposal of disparate renal flow compartments focused attention on intrarenal hemodynamics. Trueta's focus on renal cortical ischemia was ultimately validated by the studies of Barger in the dog and Hollenberg and Epstein in human subjects.

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