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Understanding cellular response to environmental stress has broad implications for human disease. AMP-activated protein kinase (AMPK) orchestrates the regulation of energy-generating and -consuming pathways, and protects the heart against ischaemic injury and apoptosis. A role for circulating hormones such as adiponectin and leptin in the activation of AMPK has received recent attention. Whether local autocrine and paracrine factors within target organs such as the heart modulate AMPK is unknown. Here we show that macrophage migration inhibitory factor (MIF), an upstream regulator of inflammation, is released in the ischaemic heart, where it stimulates AMPK activation through CD74, promotes glucose uptake and protects the heart during ischaemia-reperfusion injury. Germline deletion of the Mif gene impairs ischaemic AMPK signalling in the mouse heart. Human fibroblasts with a low-activity MIF promoter polymorphism have diminished MIF release and AMPK activation during hypoxia. Thus, MIF modulates the activation of the cardioprotective AMPK pathway during ischaemia, functionally linking inflammation and metabolism in the heart. We anticipate that genetic variation in MIF expression may impact on the response of the human heart to ischaemia by the AMPK pathway, and that diagnostic MIF genotyping might predict risk in patients with coronary artery disease. 相似文献
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Basak I. Wicky H. E. McDonald K. O. Xu J. B. Palmer J. E. Best H. L. Lefrancois S. Lee S. Y. Schoderboeck L. Hughes S. M. 《Cellular and molecular life sciences : CMLS》2021,78(10):4735-4763
Cellular and Molecular Life Sciences - Neuronal Ceroid Lipofuscinosis (NCL), also known as Batten disease, is an incurable childhood brain disease. The thirteen forms of NCL are caused by mutations... 相似文献
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Varon R Gooding R Steglich C Marns L Tang H Angelicheva D Yong KK Ambrugger P Reinhold A Morar B Baas F Kwa M Tournev I Guerguelcheva V Kremensky I Lochmüller H Müllner-Eidenböck A Merlini L Neumann L Bürger J Walter M Swoboda K Thomas PK von Moers A Risch N Kalaydjieva L 《Nature genetics》2003,35(2):185-189
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Reich D Patterson N De Jager PL McDonald GJ Waliszewska A Tandon A Lincoln RR DeLoa C Fruhan SA Cabre P Bera O Semana G Kelly MA Francis DA Ardlie K Khan O Cree BA Hauser SL Oksenberg JR Hafler DA 《Nature genetics》2005,37(10):1113-1118
Multiple sclerosis is a common disease with proven heritability, but, despite large-scale attempts, no underlying risk genes have been identified. Traditional linkage scans have so far identified only one risk haplotype for multiple sclerosis (at HLA on chromosome 6), which explains only a fraction of the increased risk to siblings. Association scans such as admixture mapping have much more power, in principle, to find the weak factors that must explain most of the disease risk. We describe here the first high-powered admixture scan, focusing on 605 African American cases and 1,043 African American controls, and report a locus on chromosome 1 that is significantly associated with multiple sclerosis. 相似文献
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