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Khajavi L, Nguyen XH, Queriault C, Chabod M, Barateau L, Dauvilliers Y, Zytnicki M, Liblau R. The transcriptomics profiling of blood CD4 and CD8 T-cells in narcolepsy type I. Front Immunol 2023; 14:1249405. [PMID: 38077397 PMCID: PMC10702585 DOI: 10.3389/fimmu.2023.1249405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 10/24/2023] [Indexed: 12/18/2023] Open
Abstract
Background Narcolepsy Type I (NT1) is a rare, life-long sleep disorder arising as a consequence of the extensive destruction of orexin-producing hypothalamic neurons. The mechanisms involved in the destruction of orexin neurons are not yet elucidated but the association of narcolepsy with environmental triggers and genetic susceptibility (strong association with the HLA, TCRs and other immunologically-relevant loci) implicates an immuno-pathological process. Several studies in animal models and on human samples have suggested that T-cells are the main pathogenic culprits. Methods RNA sequencing was performed on four CD4 and CD8 T-cell subsets (naive, effector, effector memory and central memory) sorted by flow cytometry from peripheral blood mononuclear cells (PBMCs) of NT1 patients and HLA-matched healthy donors as well as (age- and sex-) matched individuals suffering from other sleep disorders (OSD). The RNAseq analysis was conducted by comparing the transcriptome of NT1 patients to that of healthy donors and other sleep disorder patients (collectively referred to as the non-narcolepsy controls) in order to identify NT1-specific genes and pathways. Results We determined NT1-specific differentially expressed genes, several of which are involved in tubulin arrangement found in CD4 (TBCB, CCT5, EML4, TPGS1, TPGS2) and CD8 (TTLL7) T cell subsets, which play a role in the immune synapse formation and TCR signaling. Furthermore, we identified genes (GZMB, LTB in CD4 T-cells and NLRP3, TRADD, IL6, CXCR1, FOXO3, FOXP3 in CD8 T-cells) and pathways involved in various aspects of inflammation and inflammatory response. More specifically, the inflammatory profile was identified in the "naive" subset of CD4 and CD8 T-cell. Conclusion We identified NT1-specific differentially expressed genes, providing a cell-type and subset specific catalog describing their functions in T-cells as well as their potential involvement in NT1. Several genes and pathways identified are involved in the formation of the immune synapse and TCR activation as well as inflammation and the inflammatory response. An inflammatory transcriptomic profile was detected in both "naive" CD4 and CD8 T-cell subsets suggesting their possible involvement in the development or progression of the narcoleptic process.
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Affiliation(s)
- Leila Khajavi
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), University of Toulouse, Centre National de la Recherche Scientifique (CNRS), L'Institut National de la Sante et de la Recherche Medicale (INSERM), Universite Paul-Sabatier de Toulouse (UPS), Toulouse, France
- Applied Mathematics and Informatics Unit of Toulouse (MIAT), Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement (INRAE), Toulouse, France
| | - Xuan-Hung Nguyen
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), University of Toulouse, Centre National de la Recherche Scientifique (CNRS), L'Institut National de la Sante et de la Recherche Medicale (INSERM), Universite Paul-Sabatier de Toulouse (UPS), Toulouse, France
- Vinmec Institute of Applied Science and Regenerative Medicine, Vinmec Healthcare System and College of Health Sciences, VinUniveristy, Hanoi, Vietnam
| | - Clémence Queriault
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), University of Toulouse, Centre National de la Recherche Scientifique (CNRS), L'Institut National de la Sante et de la Recherche Medicale (INSERM), Universite Paul-Sabatier de Toulouse (UPS), Toulouse, France
| | - Marianne Chabod
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), University of Toulouse, Centre National de la Recherche Scientifique (CNRS), L'Institut National de la Sante et de la Recherche Medicale (INSERM), Universite Paul-Sabatier de Toulouse (UPS), Toulouse, France
| | - Lucie Barateau
- National Reference Center for Orphan Diseases, Narcolepsy, Idiopathic Hypersomnia and Kleine-Levin Syndrome, Department of Neurology, Gui-de-Chauliac Hospital, Centre Hospitalier Universitaire (CHU) de Montpellier, Montpellier, France
- Institute for Neurosciences of Montpellier (INM), University Montpellier, Montpellier, France
| | - Yves Dauvilliers
- National Reference Center for Orphan Diseases, Narcolepsy, Idiopathic Hypersomnia and Kleine-Levin Syndrome, Department of Neurology, Gui-de-Chauliac Hospital, Centre Hospitalier Universitaire (CHU) de Montpellier, Montpellier, France
- Institute for Neurosciences of Montpellier (INM), University Montpellier, Montpellier, France
| | - Matthias Zytnicki
- Applied Mathematics and Informatics Unit of Toulouse (MIAT), Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement (INRAE), Toulouse, France
| | - Roland Liblau
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), University of Toulouse, Centre National de la Recherche Scientifique (CNRS), L'Institut National de la Sante et de la Recherche Medicale (INSERM), Universite Paul-Sabatier de Toulouse (UPS), Toulouse, France
- Department of Immunology, Toulouse University Hospital, Toulouse, France
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Pattinson CL, Guedes VA, Edwards K, Mithani S, Yun S, Taylor P, Dunbar K, Kim HS, Lai C, Roy MJ, Gill JM. Excessive daytime sleepiness is associated with altered gene expression in military personnel and veterans with posttraumatic stress disorder: an RNA sequencing study. Sleep 2021; 43:5802516. [PMID: 32191323 DOI: 10.1093/sleep/zsaa036] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 02/11/2020] [Indexed: 11/13/2022] Open
Abstract
STUDY OBJECTIVES Posttraumatic stress disorder (PTSD) is a common condition for military personnel and veterans. PTSD has been shown to impact gene expression, however, to date no study has examined comorbid conditions which may also impact gene expression, for example, excessive daytime sleepiness (EDS). As such, this study sought to examine gene expression using RNA sequencing across three group comparisons of military personnel and veterans: (1) PTSD with EDS (PTSDwEDS) versus PTSD without EDS (PTSDw/outEDS), (2) Controls (no PTSD or EDS) versus PTSDwEDS, and (3) Controls versus PTSDw/outEDS. METHODS We performed experimental RNA-seq using Illumina's HiSeq 2500 Sequencing System. We also used Ingenuity Pathway Analysis (IPA), a bioinformatics application, to identify gene pathways and networks which may be disrupted. RESULTS There were only two genes that were significantly dysregulated between the Controls and PTSDw/outEDS, therefore IPA analysis was not conducted. However, comparisons revealed that there was significant gene dysregulation between Controls and the PTSDwEDS (251 genes), and the PTSDwEDS versus the PTSDw/outEDS (1,873 genes) groups. Four candidate networks were identified via the IPA software for analysis. Significantly dysregulated genes across the four candidate networks were associated with sleep and circadian function, metabolism, mitochondrial production and function, ubiquitination, and the glutamate system. CONCLUSIONS These results suggest that PTSD with concurrent EDS is associated with gene dysregulation. This dysregulation may present additional biological and health consequences for these military personnel and veterans. Further research, to track these gene changes over time and to determine the cause of the EDS reported, is vital.
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Affiliation(s)
- Cassandra L Pattinson
- National Institutes of Nursing Research, National Institutes of Health, Bethesda, MD.,Institute for Social Science Research, University of Queensland, Indooroopilly, Queensland, Australia
| | - Vivian A Guedes
- National Institutes of Nursing Research, National Institutes of Health, Bethesda, MD
| | - Katie Edwards
- National Institutes of Nursing Research, National Institutes of Health, Bethesda, MD.,Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD
| | - Sara Mithani
- National Institutes of Nursing Research, National Institutes of Health, Bethesda, MD
| | - Sijung Yun
- National Institutes of Nursing Research, National Institutes of Health, Bethesda, MD.,Yotta Biomed, LLC, Bethesda, MD
| | - Patricia Taylor
- Institute for Social Science Research, University of Queensland, Indooroopilly, Queensland, Australia.,Center for Neuroscience and Regenerative Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD
| | - Kerri Dunbar
- Institute for Social Science Research, University of Queensland, Indooroopilly, Queensland, Australia.,Center for Neuroscience and Regenerative Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD
| | - Hyung-Suk Kim
- National Institutes of Nursing Research, National Institutes of Health, Bethesda, MD
| | - Chen Lai
- National Institutes of Nursing Research, National Institutes of Health, Bethesda, MD
| | - Michael J Roy
- Center for Neuroscience and Regenerative Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD.,Department of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD
| | - Jessica M Gill
- National Institutes of Nursing Research, National Institutes of Health, Bethesda, MD
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Ouyang H, Wang S, Zheng Q, Zhang J. Constructing gene network for type 1 narcolepsy based on genome-wide association study and differential gene expression analysis (STROBE). Medicine (Baltimore) 2020; 99:e19985. [PMID: 32358372 PMCID: PMC7440059 DOI: 10.1097/md.0000000000019985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Although many genes that affect narcolepsy risk have been identified, the interactions among these genes are still unclear. Moreover, there is a lack of research on the construction of the genetic network of narcolepsy. To screen candidate genes related to the onset of narcolepsy type 1, the function and distribution of important genes related to narcolepsy type 1 were studied and a gene network was constructed to study the pathogenesis of narcolepsy type 1.A case-control study (observational study) of 1075 Chinese narcoleptic patients and 1997 controls was conducted. The gene-sequencing data was analyzed using genome-wide association analysis. The candidate genes related to narcolepsy were identified by differential gene expression analysis and literature research. Then, the 28 candidate genes were input into the KEGG database and 32 pathway data related to candidate genes were obtained. A gene network, with the pathways as links and the genes as nodes, was constructed. According to our results, TNF, MHC II, NFATC2, and CXCL8 were the top genes in the gene network.TNF, MHC II, NFATC2, and CXCL8 are closely related to narcolepsy type I and require further study. By analyzing the pathways of disease-related genes and the network of gene interaction, we can provide an outlinefor the study of specific mechanisms of and treatments for narcolepsy.
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Affiliation(s)
- Hui Ouyang
- Department of Clinical Neurology, Peking University, People's Hospital
| | - Shiying Wang
- Department of Epidemiology and Biostatistics, Peking University Health Science Center, Beijing, China
| | - Qiwen Zheng
- Department of Epidemiology and Biostatistics, Peking University Health Science Center, Beijing, China
| | - Jun Zhang
- Department of Clinical Neurology, Peking University, People's Hospital
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Aydinoz S, Huang YS, Gozal D, Inocente CO, Franco P, Kheirandish-Gozal L. Allergies and Disease Severity in Childhood Narcolepsy: Preliminary Findings. Sleep 2015; 38:1981-4. [PMID: 25902808 DOI: 10.5665/sleep.5254] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 04/06/2015] [Indexed: 11/03/2022] Open
Abstract
INTRODUCTION Narcolepsy frequently begins in childhood, and is characterized by excessive daytime sleepiness, with the presence of cataplexy reflecting a more severe phenotype. Narcolepsy may result from genetic predisposition involving deregulation of immune pathways, particularly involving T helper 2 cells (Th2). Increased activation of Th2 cells is usually manifested as allergic conditions such as rhinitis, atopic dermatitis, and asthma. We hypothesized that the presence of allergic conditions indicative of increased Th2 balance may dampen the severity of the phenotype in children with narcolepsy. METHODS A retrospective chart review of childhood narcolepsy patients was conducted at three major pediatric sleep centers. Patients were divided into those with narcolepsy without cataplexy (NC-) and narcolepsy with cataplexy (NC+). Demographics, polysomnographic and multiple sleep latency test data, and extraction of information on the presence of allergic diseases such allergic rhinitis, atopic dermatitis, and asthma was performed. RESULTS There were 468 children identified, with 193 children in NC- group and 275 patients in the NC+ group. Overall, NC+ children were significantly younger, had higher body mass index, and had shorter mean sleep latencies and increased sleep onset rapid eye movement events. The frequency of allergic conditions, particularly asthma and allergic rhinitis, was markedly lower in NC+ (58/275) compared to NC- patients (94/193; P < 0.0001). CONCLUSION Involvement of the immune system plays an important role in the pathophysiology of narcolepsy. Current findings further suggest that an increased shift toward T helper 2 cells, as indicated by the presence of allergic conditions, may modulate the severity of the phenotype in childhood narcolepsy, and reduce the prevalence of cataplexy in these patients.
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Affiliation(s)
- Secil Aydinoz
- Section of Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL
| | - Yu-Shu Huang
- Department of Child Psychiatry and Sleep Center, Chang Gung Memorial Hospital, Gueishan Township, Taoyuan Country, Taiwan
| | - David Gozal
- Section of Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL
| | - Clara O Inocente
- Unité de Sommeil Pédiatrique & INSERM U1028 Service Epilepsie-Sommeil-Explorations Fonctionnelles Neurologiques Pédiatriques, Hôpital Femme-Mère-Enfant 59, Bron, Lyon, France
| | - Patricia Franco
- Unité de Sommeil Pédiatrique & INSERM U1028 Service Epilepsie-Sommeil-Explorations Fonctionnelles Neurologiques Pédiatriques, Hôpital Femme-Mère-Enfant 59, Bron, Lyon, France
| | - Leila Kheirandish-Gozal
- Section of Sleep Medicine, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL
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Bartoletti-Stella A, Gasparini L, Giacomini C, Corrado P, Terlizzi R, Giorgio E, Magini P, Seri M, Baruzzi A, Parchi P, Brusco A, Cortelli P, Capellari S. Messenger RNA processing is altered in autosomal dominant leukodystrophy. Hum Mol Genet 2015; 24:2746-56. [PMID: 25637521 PMCID: PMC4406291 DOI: 10.1093/hmg/ddv034] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Accepted: 01/27/2015] [Indexed: 02/06/2023] Open
Abstract
Adult-onset autosomal dominant leukodystrophy (ADLD) is a slowly progressive neurological disorder characterized by autonomic dysfunction, followed by cerebellar and pyramidal features. ADLD is caused by duplication of the lamin B1 gene (LMNB1), which leads to its increased expression. The molecular pathways involved in the disease are still poorly understood. Hence, we analyzed global gene expression in fibroblasts and whole blood of LMNB1 duplication carriers and used Gene Set Enrichment Analysis to explore their gene signatures. We found that LMNB1 duplication is associated with dysregulation of genes involved in the immune system, neuronal and skeletal development. Genes with an altered transcriptional profile clustered in specific genomic regions. Among the dysregulated genes, we further studied the role of RAVER2, which we found to be overexpressed at mRNA and protein level. RAVER2 encodes a putative trans regulator of the splicing repressor polypyrimidine tract binding protein (PTB) and is likely implicated in alternative splicing regulation. Functional studies demonstrated an abnormal splicing pattern of several PTB-target genes and of the myelin protein gene PLP1, previously demonstrated to be involved in ADLD. Mutant mice with different lamin B1 expression levels confirmed that Raver2 expression is dependent on lamin B1 in neural tissue and determines an altered splicing pattern of PTB-target genes and Plp1. Overall our results demonstrate that deregulation of lamin B1 expression induces modified splicing of several genes, likely driven by raver-2 overexpression, and suggest that an alteration of mRNA processing could be a pathogenic mechanism in ADLD.
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Affiliation(s)
- Anna Bartoletti-Stella
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna 40123, Italy
| | - Laura Gasparini
- Department of Neuroscience and Brain Techonologies, Istituto Italiano di Tecnologia, Genova 16163, Italy
| | - Caterina Giacomini
- Department of Neuroscience and Brain Techonologies, Istituto Italiano di Tecnologia, Genova 16163, Italy
| | - Patrizia Corrado
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna 40123, Italy
| | - Rossana Terlizzi
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna 40123, Italy, IRCCS Istituto delle Scienze Neurologiche di Bologna, UOC Clinica Neurologica, Ospedale Bellaria, Bologna 40139, Italy
| | - Elisa Giorgio
- Department of Medical Sciences, University of Torino, Torino 10126, Italy
| | - Pamela Magini
- Medical Genetics Unit, Department of Medical and Surgical Sciences, University of Bologna 40138, Italy and
| | - Marco Seri
- Medical Genetics Unit, Department of Medical and Surgical Sciences, University of Bologna 40138, Italy and
| | - Agostino Baruzzi
- IRCCS Istituto delle Scienze Neurologiche di Bologna, UOC Clinica Neurologica, Ospedale Bellaria, Bologna 40139, Italy
| | - Piero Parchi
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna 40123, Italy, IRCCS Istituto delle Scienze Neurologiche di Bologna, UOC Clinica Neurologica, Ospedale Bellaria, Bologna 40139, Italy
| | - Alfredo Brusco
- Department of Medical Sciences, University of Torino, Torino 10126, Italy, Città della Salute e della Scienza, University Hospital, Medical Genetics Unit, Torino 10126, Italy
| | - Pietro Cortelli
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna 40123, Italy, IRCCS Istituto delle Scienze Neurologiche di Bologna, UOC Clinica Neurologica, Ospedale Bellaria, Bologna 40139, Italy
| | - Sabina Capellari
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna 40123, Italy, IRCCS Istituto delle Scienze Neurologiche di Bologna, UOC Clinica Neurologica, Ospedale Bellaria, Bologna 40139, Italy,
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Genetische Aspekte der REM-Schlaf-Verhaltensstörung. SOMNOLOGIE 2014. [DOI: 10.1007/s11818-014-0679-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Gene expression profiling as a tool to investigate the molecular machinery activated during hippocampal neurodegeneration induced by trimethyltin (TMT) administration. Int J Mol Sci 2013; 14:16817-35. [PMID: 23955266 PMCID: PMC3759937 DOI: 10.3390/ijms140816817] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 08/06/2013] [Accepted: 08/08/2013] [Indexed: 12/31/2022] Open
Abstract
Trimethyltin (TMT) is an organotin compound exhibiting neurotoxicant effects selectively localized in the limbic system and especially marked in the hippocampus, in both experimental animal models and accidentally exposed humans. TMT administration causes selective neuronal death involving either the granular neurons of the dentate gyrus or the pyramidal cells of the Cornu Ammonis, with a different pattern of localization depending on the different species studied or the dosage schedule. TMT is broadly used to realize experimental models of hippocampal neurodegeneration associated with cognitive impairment and temporal lobe epilepsy, though the molecular mechanisms underlying the associated selective neuronal death are still not conclusively clarified. Experimental evidence indicates that TMT-induced neurodegeneration is a complex event involving different pathogenetic mechanisms, probably acting differently in animal and cell models, which include neuroinflammation, intracellular calcium overload, and oxidative stress. Microarray-based, genome-wide expression analysis has been used to investigate the molecular scenario occurring in the TMT-injured brain in different in vivo and in vitro models, producing an overwhelming amount of data. The aim of this review is to discuss and rationalize the state-of-the-art on TMT-associated genome wide expression profiles in order to identify comparable and reproducible data that may allow focusing on significantly involved pathways.
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Mahlios J, De la Herrán-Arita AK, Mignot E. The autoimmune basis of narcolepsy. Curr Opin Neurobiol 2013; 23:767-73. [PMID: 23725858 DOI: 10.1016/j.conb.2013.04.013] [Citation(s) in RCA: 112] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2013] [Revised: 04/19/2013] [Accepted: 04/19/2013] [Indexed: 01/04/2023]
Abstract
Narcolepsy is a neurological disorder characterized by excessive daytime sleepiness, cataplexy, hypnagonic hallucinations, sleep paralysis, and disturbed nocturnal sleep patterns. Narcolepsy is caused by the loss of hypocretin (orexin)-producing neurons in the lateral hypothalamus. Evidence, such as a strong association with HLA DQB1*06:02, strongly suggests an autoimmune basis targeting hypocretin neurons. Genome-wide association studies have strengthened the association between narcolepsy and immune system gene polymorphisms, including the identification of polymorphisms in the T cell receptor alpha locus, TNFSF4 (also called OX40L), Cathepsin H (CTSH) the purinergic receptor P2RY11, and the DNA methyltransferase DNMT1. Recently, attention has been raised regarding a spike in cases of childhood narcolepsy in 2010 following the 2009 H1N1 pandemic (pH1N1) in China and vaccination with Pandemrix, an adjuvanted H1N1 vaccine that was used in Europe. How the immune system may be involved in disease initiation and/or progression remains a challenge to researchers. Potential immunological pathways that could lead to the specific elimination of hypocretin producing neurons include molecular mimicry or bystander activation, and are likely a combination of genetic and environmental factors, such as upper airway infections.
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Affiliation(s)
- Josh Mahlios
- Stanford Center for Sleep Sciences and Medicine, Stanford University School of Medicine, 1050 A, Arastradero Road, Palo Alto, CA 94034, USA
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