@article{88f23866c82b4c0fb64a6c6bafa2586e,
title = "Methylglyoxal modification of Na v 1.8 facilitates nociceptive neuron firing and causes hyperalgesia in diabetic neuropathy",
abstract = "This study establishes a mechanism for metabolic hyperalgesia based on the glycolytic metabolite methylglyoxal. We found that concentrations of plasma methylglyoxal above 600 nM discriminate between diabetes-affected individuals with pain and those without pain. Methylglyoxal depolarizes sensory neurons and induces post-translational modifications of the voltage-gated sodium channel Na v 1.8, which are associated with increased electrical excitability and facilitated firing of nociceptive neurons, whereas it promotes the slow inactivation of Na v 1.7. In mice, treatment with methylglyoxal reduces nerve conduction velocity, facilitates neurosecretion of calcitonin gene-related peptide, increases cyclooxygenase-2 (COX-2) expression and evokes thermal and mechanical hyperalgesia. This hyperalgesia is reflected by increased blood flow in brain regions that are involved in pain processing. We also found similar changes in streptozotocin-induced and genetic mouse models of diabetes but not in Na v 1.8 knockout (Scn10 -/-) mice. Several strategies that include a methylglyoxal scavenger are effective in reducing methylglyoxal-and diabetes-induced hyperalgesia. This previously undescribed concept of metabolically driven hyperalgesia provides a new basis for the design of therapeutic interventions for painful diabetic neuropathy.",
author = "Angelika Bierhaus and Thomas Fleming and Stoyan Stoyanov and Andreas Leffler and Alexandru Babes and Cristian Neacsu and Sauer, {Susanne K.} and Mirjam Eberhardt and Martina Schn{\"o}lzer and Felix Lasischka and Neuhuber, {Winfried L.} and Kichko, {Tatjana I.} and Ilze Konrade and Ralf Elvert and Walter Mier and Valdis Pirags and Lukic, {Ivan K.} and Michael Morcos and Thomas Dehmer and Naila Rabbani and Thornalley, {Paul J.} and Diane Edelstein and Carla Nau and Josephine Forbes and Humpert, {Per M.} and Markus Schwaninger and Dan Ziegler and Stern, {David M.} and Cooper, {Mark E.} and Uwe Haberkorn and Michael Brownlee and Reeh, {Peter W.} and Nawroth, {Peter P.}",
note = "Funding Information: The authors thank S. Kaymak for immunohistochemistry, A. Buhl and K. Leotta for assistance in the cerebral blood flow experiments, L. Werner for support with bregma gradings and X. Du and A. Erhardt for the daily care of the mice. A. Bierhaus, J.F., M.E.C., M.B. and P.P.N. were supported by a Centre grant from the Juvenile Diabetes Research Foundation (JDRF). This work was also supported in part by grants from the Deutsche Forschungsgemeinschaft (BI-1281/3-1 to A. Bierhaus; LU728/3-1 and NA-350/3-2 in KFO 130 to P.W.R., C. Nau and A.L.), the US National Institutes of Health (2R56DK33861-21 to M.B.), the European Foundation for the Study of Diabetes (EFSD/Lilly-Programme, to A. Bierhaus), the German Diabetes Association (DDG, Christian-Hagedorn-Award to A. Bierhaus), the Manfred-Lautenschl{\"a}ger-Stiftung for Diabetes (LSD, to P.P.N.), the Dietmar-Hopp-Stiftung (to A. Bierhaus, P.M.H. and P.P.N.) and the Network Aging Research (NAR, to A. Bierhaus). A. Babes and C.N. were supported by grant PN2 164/2007 from the Romanian Research Council (CNCSIS). A. Babes also received support from the Alexander von Humboldt Foundation.",
year = "2012",
month = jun,
doi = "10.1038/nm.2750",
language = "English",
volume = "18",
pages = "926--933",
journal = "Nature Medicine",
issn = "1078-8956",
publisher = "Nature Research",
number = "6",
}
