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1دورية أكاديمية
المؤلفون: Marta Pace, Antoine Adamantidis, Laura Facchin, Claudio Bassetti
المصدر: PLoS ONE, Vol 12, Iss 1, p e0168430 (2017)
الوصف: Sleep reduction after stroke is linked to poor recovery in patients. Conversely, a neuroprotective effect is observed in animals subjected to acute sleep deprivation (SD) before ischemia. This neuroprotection is associated with an increase of the sleep, melanin concentrating hormone (MCH) and orexin/hypocretin (OX) systems. This study aims to 1) assess the relationship between sleep and recovery; 2) test the association between MCH and OX systems with the pathological mechanisms of stroke.Sprague-Dawley rats were assigned to four experimental groups: (i) SD_IS: SD performed before ischemia; (ii) IS: ischemia; (iii) SD_Sham: SD performed before sham surgery; (iv) Sham: sham surgery. EEG and EMG were recorded. The time-course of the MCH and OX gene expression was measured at 4, 12, 24 hours and 3, 4, 7 days following ischemic surgery by qRT-PCR.A reduction of infarct volume was observed in the SD_IS group, which correlated with an increase of REM sleep observed during the acute phase of stroke. Conversely, the IS group showed a reduction of REM sleep. Furthermore, ischemia induces an increase of MCH and OX systems during the acute phase of stroke, although, both systems were still increased for a long period of time only in the SD_IS group.Our data indicates that REM sleep may be involved in the neuroprotective effect of SD pre-ischemia, and that both MCH and OX systems were increased during the acute phase of stroke. Future studies should assess the role of REM sleep as a prognostic marker, and test MCH and OXA agonists as new treatment options in the acute phase of stroke.
وصف الملف: electronic resource
العلاقة: http://europepmc.org/articles/PMC5218733?pdf=renderTest; https://doaj.org/toc/1932-6203Test
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2دورية أكاديمية
المؤلفون: Juliette Faraco, Ling Lin, Birgitte Rahbek Kornum, Eimear E Kenny, Gosia Trynka, Mali Einen, Tom J Rico, Peter Lichtner, Yves Dauvilliers, Isabelle Arnulf, Michel Lecendreux, Sirous Javidi, Peter Geisler, Geert Mayer, Fabio Pizza, Francesca Poli, Giuseppe Plazzi, Sebastiaan Overeem, Gert Jan Lammers, David Kemlink, Karel Sonka, Sona Nevsimalova, Guy Rouleau, Alex Desautels, Jacques Montplaisir, Birgit Frauscher, Laura Ehrmann, Birgit Högl, Poul Jennum, Patrice Bourgin, Rosa Peraita-Adrados, Alex Iranzo, Claudio Bassetti, Wei-Min Chen, Patrick Concannon, Susan D Thompson, Vincent Damotte, Bertrand Fontaine, Maxime Breban, Christian Gieger, Norman Klopp, Panos Deloukas, Cisca Wijmenga, Joachim Hallmayer, Suna Onengut-Gumuscu, Stephen S Rich, Juliane Winkelmann, Emmanuel Mignot
المصدر: PLoS Genetics, Vol 9, Iss 2, p e1003270 (2013)
الوصف: Recent advances in the identification of susceptibility genes and environmental exposures provide broad support for a post-infectious autoimmune basis for narcolepsy/hypocretin (orexin) deficiency. We genotyped loci associated with other autoimmune and inflammatory diseases in 1,886 individuals with hypocretin-deficient narcolepsy and 10,421 controls, all of European ancestry, using a custom genotyping array (ImmunoChip). Three loci located outside the Human Leukocyte Antigen (HLA) region on chromosome 6 were significantly associated with disease risk. In addition to a strong signal in the T cell receptor alpha (TRA@), variants in two additional narcolepsy loci, Cathepsin H (CTSH) and Tumor necrosis factor (ligand) superfamily member 4 (TNFSF4, also called OX40L), attained genome-wide significance. These findings underline the importance of antigen presentation by HLA Class II to T cells in the pathophysiology of this autoimmune disease.
وصف الملف: electronic resource
العلاقة: http://europepmc.org/articles/PMC3573113?pdf=renderTest; https://doaj.org/toc/1553-7390Test; https://doaj.org/toc/1553-7404Test
النص الكامل