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Published ahead of print on January 30, 2008
J Am Soc Nephrol 19: 871-875, 2008
© 2008 American Society of Nephrology
doi: 10.1681/ASN.2007080913
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Pathophysiology of the Renal Biopsy

Acute Tubular Necrosis Is a Syndrome of Physiologic and Pathologic Dissociation

Seymour Rosen* and Isaac E. Stillman{dagger}

* Department of Pathology, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, Massachusetts; and {dagger} Department of Pathology and Renal Division, Department of Medicine, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, Massachusetts

Correspondence: Dr. Isaac E. Stillman, Department of Pathology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA 02215. Phone: 617-667-4344; Fax: 617-667-7120; E-mail: istillma{at}bidmc.harvard.edu

Acute tubular necrosis (ATN) is a syndrome of intrinsic renal failure secondary to ischemic or toxic insults. The histopathologic findings of ATN are inconstant. When present, they are limited to the tubulo-interstitium and often subtle despite profound dysfunction. Experimental models of ATN in healthy animals commonly use single insults that result in extensive injury, circumstances that do not parallel the human situation. Recently, there has been a shift to more clinically relevant models using an acute insult superimposed on predisposing factors. This review discusses the complex hemodynamic interrelationships of hypoxia, tubular injury, and altered glomerular filtration, suggesting new ways to understand the pathophysiology of ATN.






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Copyright © 2008 by the American Society of Nephrology. Online ISSN: 1533-3450 Print ISSN: 1046-6673