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Pandemrix narcolepsy

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https://www.readbyqxmd.com/read/28428181/irish-mp-calls-for-key-documents-on-pandemrix-to-be-handed-to-lawyers-representing-children-with-narcolepsy
#1
Clare Dyer
No abstract text is available yet for this article.
April 20, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28364500/antibodies-against-hypocretin-receptor-2-are-rare-in-narcolepsy
#2
Maria Pia Giannoccaro, Patrick Waters, Fabio Pizza, Rocco Liguori, Giuseppe Plazzi, Angela Vincent
Study Objectives: Recently, antibodies to the hypocretin receptor 2 (HCRTR2-Abs) were reported in a high proportion of narcolepsy patients who developed the disease following Pandemrix® vaccination. We tested a group of narcolepsy patients for the HCRTR2-Abs using a newly established cell-based assay. Methods: Sera from 50 narcolepsy type 1 (NT1) and 11 narcolepsy type 2 (NT2) patients, 22 patients with other sleep disorders, 15 healthy controls, and 93 disease controls were studied...
February 1, 2017: Sleep
https://www.readbyqxmd.com/read/28332559/the-immunogenetics-of-narcolepsy-associated-with-a-h1n1-pdm09-vaccination-pandemrix-supports-a-potent-gene-environment-interaction
#3
I L Bomfim, F Lamb, K Fink, A Szakács, A Silveira, L Franzén, V Azhary, M Maeurer, N Feltelius, N Darin, T Hallböök, L Arnheim-Dahlström, I Kockum, T Olsson
The influenza A(H1N1)pdm09 vaccination campaign from 2009 to 2010 was associated with a sudden increase in the incidence of narcolepsy in several countries. Narcolepsy with cataplexy is strongly associated with the human leukocyte antigen (HLA) class II DQB1*06:02 allele, and protective associations with the DQB1*06:03 allele have been reported. Several non-HLA gene loci are also associated, such as common variants of the T-cell receptor-α (TRA), the purinergic receptor P2RY11, cathepsin H (CTSH) and TNFSF4/OX40L/CD252...
March 23, 2017: Genes and Immunity
https://www.readbyqxmd.com/read/28302408/narcolepsy-and-hypersomnia-in-norwegian-children-and-young-adults-following-the-influenza-a-h1n1-2009-pandemic
#4
Lill Trogstad, Inger Johanne Bakken, Nina Gunnes, Sara Ghaderi, Camilla Stoltenberg, Per Magnus, Siri E Håberg
BACKGROUND: Associations between influenza infection and sleep disorders are poorly studied. We investigated if pandemic influenza infection or vaccination with Pandemrix in 2009/2010 was associated with narcolepsy or hypersomnia in children and young adults. METHODS: We followed the Norwegian population under age 30 from January 2008 through December 2012 by linking national health registry data. Narcolepsy diagnoses were validated using hospital records. Risks of narcolepsy or hypersomnia were estimated as adjusted hazard ratios (HRs) in Cox regression models with influenza infection and vaccination as time-dependent exposures...
March 13, 2017: Vaccine
https://www.readbyqxmd.com/read/28251619/narcolepsy-patients-blood-based-mirna-expression-profiling-mirna-expression-differences%C3%A2-with-pandemrix-vaccination
#5
N Mosakhani, V Sarhadi, P Panula, M Partinen, S Knuutila
OBJECTIVES: Narcolepsy is a neurological sleep disorder characterized by excessive daytime sleepiness and nighttime sleep disturbance. Among children and adolescents vaccinated with Pandemrix vaccine in Finland and Sweden, the number of narcolepsy cases increased. Our aim was to identify miRNAs involved in narcolepsy and their association with Pandemrix vaccination. MATERIALS AND METHODS: We performed global miRNA proofing by miRNA microarrays followed by RT-PCR verification on 20 narcolepsy patients (Pandemrix-associated and Pandemrix-non-associated) and 17 controls (vaccinated and non-vaccinated)...
March 1, 2017: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/28153207/vitamin-d-deficiency-in-type-1-narcolepsy-a-reappraisal
#6
Yves Dauvilliers, Elisa Evangelista, Regis Lopez, Lucie Barateau, Sabine Scholz, Barbara Crastes de Paulet, Bertrand Carlander, Isabelle Jaussent
OBJECTIVES: Narcolepsy type 1 (NT1) is considered to be an immune-mediated disease in which environmental factors, such as vitamin D, might play a major role. The association between NT1 and vitamin D deficiency has previously been reported. The aim of this case-control study was to reassess vitamin D levels in a large clinic-based adult and paediatric population of patients with NT1 by considering several potential confounding factors. METHODS: The serum level of 25-hydroxyvitamin D (25OHD) was measured in 174 Caucasian patients with NT1 and 174 controls...
January 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28108192/epidemiology-and-pathophysiology-of-childhood-narcolepsy
#7
REVIEW
Thomas J Dye, Neepa Gurbani, Narong Simakajornboon
It is now recognized that there are two types of narcolepsy. Narcolepsy type I or Narcolepsy with cataplexy is caused by the loss of hypocretin or orexin neurons. Narcolepsy type II or narcolepsy without cataplexy has normal hypocretin and the etiology is unknown. Hypocretin is a neuropeptide produced by neurons in the lateral hypothalamus. Both genetic and environmental factors play a crucial role in the pathogenesis of narcolepsy. Most patients with narcolepsy type I and half of patients with narcolepsy type II carry HLA-DQB1*0602...
December 21, 2016: Paediatric Respiratory Reviews
https://www.readbyqxmd.com/read/27995693/risks-of-neurological-and-immune-related-diseases-including-narcolepsy-after-vaccination-with-pandemrix-a-population-and-registry-based-cohort-study-with-over-2%C3%A2-years-of-follow-up
#8
I Persson, F Granath, J Askling, J F Ludvigsson, T Olsson, N Feltelius
No abstract text is available yet for this article.
January 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/27855758/antibodies-against-hypocretin-receptor-2-are-rare-in-narcolepsy
#9
Maria Pia Giannoccaro, Patrick Waters, Fabio Pizza, Rocco Liguori, Giuseppe Plazzi, Angela Vincent
STUDY OBJECTIVES: Recently, antibodies to the hypocretin receptor 2 (HCRTR2-Abs) were reported in a high proportion of narcolepsy patients who developed the disease following Pandemrix® vaccination. We tested a group of narcolepsy patients for the HCRTR2-Abs using a newly established cell-based assay. METHODS: Sera from 50 narcolepsy type 1 (NT1) and 11 with type 2 (NT2), 22 patients with other sleep disorders, 15 healthy controls and 93 disease controls were studied...
November 14, 2016: Sleep
https://www.readbyqxmd.com/read/27629482/evaluation-of-the-potential-effects-of-as03-adjuvanted-a-h1n1-pdm09-vaccine-administration-on-the-central-nervous-system-of-non-primed-and-a-h1n1-pdm09-primed-cotton-rats
#10
Camille Planty, Corey P Mallett, Kevin Yim, Jorge C G Blanco, Marina Boukhvalova, Thomas March, Robbert van der Most, Eric Destexhe
An increased risk of narcolepsy following administration of an AS03-adjuvanted A(H1N1)pdm09 pandemic influenza vaccine (Pandemrix™) was described in children and adolescents in certain European countries. We investigated the potential effects of administration of the AS03-adjuvanted vaccine, non-adjuvanted vaccine antigen and AS03 Adjuvant System alone, on the central nervous system (CNS) in one-month-old cotton rats. Naïve or A(H1N1)pdm09 virus-primed animals received 2 or 3 intramuscular injections, respectively, of test article or saline at 2-week intervals...
January 2, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/27577558/patterns-of-spontaneous-reports-on-narcolepsy-following-administration-of-pandemic-influenza-vaccine-a-case-series-of-individual-case-safety-reports-in-eudravigilance
#11
Kartini Gadroen, Sabine M J M Straus, Alexandra Pacurariu, Daniel Weibel, Xavier Kurz, Miriam C J M Sturkenboom
OBJECTIVE: This study aims to describe the frequency and quality of spontaneous narcolepsy case reports following administration of pandemic influenza vaccine as captured in the Eudravigilance database. METHODS: We conducted a retrospective descriptive study of spontaneous Individual Case Safety Reports (ICSRs), reporting narcolepsy following administration of pandemic influenza vaccine as received by Eudravigilance until July 2014. De-duplication was carried out by Eudravigilance...
September 22, 2016: Vaccine
https://www.readbyqxmd.com/read/27564078/transient-impact-of-rituximab-in-h1n1-vaccination-associated-narcolepsy-with-severe-psychiatric-symptoms
#12
Tomi Sarkanen, Reija Alén, Markku Partinen
INTRODUCTION: Narcolepsy type 1 is an organic sleep disorder caused by the destruction of hypocretin producing neurons in hypothalamus. In addition to daytime sleepiness, the spectrum and severity of symptoms are very variable. Psychiatric comorbidity and phenomena resembling psychotic symptoms are also common. Current treatment options for narcolepsy are symptomatic but there are few case reports of positive effect of immunotherapy. We report a very severely affected young boy treated with rituximab (RXB)...
September 2016: Neurologist
https://www.readbyqxmd.com/read/27559330/narcolepsy-following-yellow-fever-vaccination-a-case-report
#13
Richard E Rosch, Michael Farquhar, Paul Gringras, Deb K Pal
Narcolepsy with cataplexy is a rare, but important differential diagnosis for daytime sleepiness and atonic paroxysms in an adolescent. A recent increase in incidence in the pediatric age group probably linked to the use of the Pandemrix influenza vaccine in 2009, has increased awareness that different environmental factors can "trigger" narcolepsy with cataplexy in a genetically susceptible population. Here, we describe the case of a 13-year-old boy with narcolepsy following yellow fever vaccination. He carries the HLA DQB1*0602 haplotype strongly associated with narcolepsy and cataplexy...
2016: Frontiers in Neurology
https://www.readbyqxmd.com/read/27538328/-narcolepsy-with-cataplexy-type-1-narcolepsy
#14
Yves Dauvilliers, Régis Lopez
Narcolepsy with cataplexy or narcolepsy type 1 in a rare, disabling sleep disorder, with a prevalence of 20 to 30 per 100,000. Its onset peaks in the second decade. The main features are excessive daytime sleepiness and cataplexy or sudden less of muscle tone triggered by emotional situations. Other less consistent symptoms include hypnagogic hallucinations, sleep paralysis, disturbed nighttime sleep, and weight gain. Narcolepsy with cataplexy remains a clinical diagnosis but nighttime and daytime polysomnography (multiple sleep latency tests) are useful to document mean sleep latency below 8 min and at least two sleep-onset REM periods...
June 2016: La Revue du Praticien
https://www.readbyqxmd.com/read/27411439/environmental-factors-in-the-etiology-of-type-1-diabetes-celiac-disease-and-narcolepsy
#15
REVIEW
Åke Lernmark
The etiology of human leukocyte antigen (HLA)-associated organ-specific autoimmune diseases is incomplete. In type 1 diabetes and celiac disease, the strongest associations are with the HLA-DR3-DQ2 and DR4-DQ8 haplotypes, whereas the DQB1*06:02 allele has a strong negative association. In contrast, narcolepsy, especially as recently triggered by the Pandemrix(®) H1N1 vaccine (GlaxoKlineSmith (GSK), Brentford, Middlesex, UK), did not seem to develop without at least one copy of the latter allele. The overall hypothesis is that the role of these different HLA haplotypes, especially in Finland and Sweden, is related to the immune response to infectious agents that are common in these two populations...
July 2016: Pediatric Diabetes
https://www.readbyqxmd.com/read/27228647/the-safety-of-adjuvanted-vaccines-revisited-vaccine-induced-narcolepsy
#16
REVIEW
S Sohail Ahmed, Emanuele Montomoli, Franco Laghi Pasini, Lawrence Steinman
Despite the very high benefit-to-risk ratio of vaccines, the fear of negative side effects has discouraged many people from getting vaccinated, resulting in the reemergence of previously controlled diseases such as measles, pertussis and diphtheria. This fear has been amplified more recently by multiple epidemiologic studies that confirmed the link of an AS03-adjuvanted pandemic influenza vaccine (Pandemrix, GlaxoSmithKline Biologicals, Germany) used in Europe during the 2009 H1N1 influenza pandemic [A(H1N1) pdm09] with the development of narcolepsy, a chronic sleep disorder, in children and adolescents...
March 2016: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/27198942/clinical-course-of-h1n1-vaccine-related-narcolepsy
#17
Tomi Sarkanen, Anniina Alakuijala, Markku Partinen
OBJECTIVE: To follow and analyze the clinical course and quality of life of Pandemrix H1N1-vaccine-related narcolepsy (pNT1). METHODS: Twenty-six drug-naïve confirmed pNT1 subjects completed Epworth Sleepiness Scale (ESS), Ullanlinna Narcolepsy Scale (UNS), Swiss Narcolepsy Scale (SNS), Rimon's Brief Depression scale (RDS), and WHO-5 Well-being index questionnaires near the disease onset and in a follow-up a minimum of two years later. The number of cataplexies and body mass index (BMI) were recorded...
March 2016: Sleep Medicine
https://www.readbyqxmd.com/read/27105343/evaluation-of-potential-immunogenicity-differences-between-pandemrix%C3%A2-and-arepanrix%C3%A2
#18
Quentin Canelle, Walthère Dewé, Bruce L Innis, Robbert van der Most
In retrospective observational studies, an increased relative risk of incident narcolepsy was observed in some European countries among recipients of the AS03-adjuvanted, A(H1N1)pdm09, inactivated, detergent-split virion vaccine Pandemrix™ manufactured in Dresden, Germany (D-Pan H1N1). A similar increased risk was not observed in a retrospective population-based study in individuals in Quebec province, Canada, who received Aprepanrix™, a Quebec-manufactured AS03-adjuvanted A(H1N1)pdm09 inactivated, detergent-split virion vaccine (Q-Pan H1N1)...
September 2016: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/27031682/mechanistic-insights-into-influenza-vaccine-associated-narcolepsy
#19
S Sohail Ahmed, Lawrence Steinman
We previously reported an increased frequency of antibodies to hypocretin (HCRT) receptor 2 in sera obtained from narcoleptic patients who received the European AS03-adjuvanted vaccine Pandemrix (GlaxoSmithKline Biologicals, s.a.) for the global influenza A H1N1 pandemic in 2009 [A(H1N1)pdm09]. These antibodies cross-reacted with a particular fragment of influenza nucleoprotein (NP) - one of the proteins naturally contained in the virus used to make seasonal influenza vaccine and pandemic influenza vaccines...
December 2016: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/26967200/pandemic-influenza-vaccine-narcolepsy-simulations-on-the-potential-impact-of-bias
#20
Leonoor Wijnans, Caitlin Dodd, Maria de Ridder, Silvana Romio, Daniel Weibel, Sebastiaan Overeem, Gert Jan Lammers, Jan Bonhoeffer, Steve Black, Miriam Sturkenboom
Several studies have identified an association between Pandemrix(TM), an AS03 adjuvanted pandemic influenza A(H1N1) vaccine, and narcolepsy, a rare and under-diagnosed sleep disorder with a median onset-to-diagnosis interval of ten years. This paper reviews potential sources of bias in published studies and aims to provide, through simulation, methodological recommendations for assessment of vaccine safety signals. Our simulation study showed that in the absence of an association between the vaccine and the outcome, presence of detection bias and differential exposure misclassification could account for elevated risk estimates...
May 2016: Expert Review of Vaccines
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