Abstract
The mechanisms that underlie tolerance to injury in immature animals and tissues have been a subject of interest since 1670. Observations in neonatal units that premature infants are less prone to develop acute renal failure than adults in critical care units have prompted a series of investigations. Although initially attributed to metabolic adaptation such as increased glycolytic capacity and preservation of high energy phosphate, more recent studies have indicated a prominent role for the heat shock response. Observed modulations of injury by heat shock proteins in the immature kidney have significant implications for advancement of our understanding of renal cell injury in both adults and children.
Key Points
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The incidence of injury to the neonatal kidney, relative to the mature kidney, is lower than projected
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In animal models, the heat shock response has a role in tolerance of the immature kidney to injury
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Experimental inhibition of the heat shock response in immature renal tubules increases susceptibility to injury
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'Priming' the heat shock response of the mature kidney, either pharmacologically or via a preconditioning insult, confers protection against a subsequent injurious challenge
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Profiling patient expression of genes involved in the heat shock response might identify those at greatest risk of acute kidney injury
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Acknowledgements
We would like to thank the large number of colleagues and collaborators who have contributed to the studies from our laboratory that are reviewed here. We appreciate funding from the NIH (PO1-HD-32573 and PO1-DK-17433), National Kidney Foundation, American Heart Association and the Eden Fellowship (Royal College of Physicians, London).
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Riordan, M., Sreedharan, R., Kashgarian, M. et al. Modulation of renal cell injury by heat shock proteins: lessons learned from the immature kidney. Nat Rev Nephrol 2, 149–156 (2006). https://doi.org/10.1038/ncpneph0117
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DOI: https://doi.org/10.1038/ncpneph0117