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Abstract Title:

Short-term dietary restriction and fasting precondition against ischemia reperfusion injury in mice.

Abstract Source:

Aging Cell. 2010 Feb;9(1):40-53. Epub 2009 Oct 30. PMID: 19878145

Abstract Author(s):

James R Mitchell, Mariëlle Verweij, Karl Brand, Marieke van de Ven, Natascha Goemaere, Sandra van den Engel, Timothy Chu, Flavio Forrer, Cristina Müller, Marion de Jong, Wilfred van IJcken, Jan N M IJzermans, Jan H J Hoeijmakers, Ron W F de Bruin

Article Affiliation:

Department of Genetics, Erasmus Medical Center, Cancer Genomics Center, Dr. Molewaterplein 50, 3015 GE, Rotterdam, The Netherlands. jmitchel@hsph.harvard.edu

Abstract:

Dietary restriction (DR) extends lifespan and increases resistance to multiple forms of stress, including ischemia reperfusion injury to the brain and heart in rodents. While maximal effects on lifespan require long-term restriction, the kinetics of onset of benefits against acute stress is not known. Here, we show that 2-4 weeks of 30% DR improved survival and kidney function following renal ischemia reperfusion injury in mice. Brief periods of water-only fasting were similarly effective at protecting against ischemic damage. Significant protection occurred within 1 day, persisted for several days beyond the fasting period and extended to another organ, the liver. Protection by both short-term DR and fasting correlated with improved insulin sensitivity, increased expression of markers of antioxidant defense and reduced expression of markers of inflammation and insulin/insulin-like growth factor-1 signaling. Unbiased transcriptional profiling of kidneys from mice subject to short-term DR or fasting revealed a significant enrichment of signature genes of long-term DR. These data demonstrate that brief periods of reduced food intake, including short-term daily restriction and fasting, can increase resistance to ischemia reperfusion injury in rodents and suggest a rapid onset of benefits of DR in mammals.

Study Type : Animal Study

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Sayer Ji
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