Use of ORO resulted in a more consistent estimation of liver steatosis compared with H&E, but human interpretations failed to correlate with computer measurements. Such differences in fat content estimations might result in the rejection of a potentially transplantable organ or the acceptance of a marginal one. Ideally, our protocol can rapidly be applied to clinical practice for accurate and consistent measurement of fat in liver sections for the ultimate purpose of increasing the number of successful transplantable organs.
Cerulenin has been shown to reduce body weight and hepatic steatosis in murine models of obesity by inhibiting fatty acid synthase (FAS). We have shown that attenuating intrahepatocyte lipid content diminished the sensitivity of ob/ob mice to ischemia/reperfusion injury and improved survival after liver transplantation. The mechanism of action is by inhibition of fatty acid metabolism by downregulating PPARa , as well as mitochondrial uncoupling protein 2 (UCP2), with a concomitant increase in ATP. A short treatment course of cerulenin prior to I/R injury is ideal for protection of steatotic livers. Cerulenin opens the potential for expanding the use of steatotic livers in transplantation.
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