Lou Grangeon

ORCID: 0000-0002-8458-7683
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About
Contact & Profiles
Research Areas
  • Migraine and Headache Studies
  • Intracerebral and Subarachnoid Hemorrhage Research
  • Cerebrovascular and genetic disorders
  • Acute Ischemic Stroke Management
  • Neurosurgical Procedures and Complications
  • Alzheimer's disease research and treatments
  • Trigeminal Neuralgia and Treatments
  • Neurological Complications and Syndromes
  • Ophthalmology and Eye Disorders
  • Moyamoya disease diagnosis and treatment
  • Connective tissue disorders research
  • Neurological diseases and metabolism
  • Cerebrospinal fluid and hydrocephalus
  • Thyroid and Parathyroid Surgery
  • Cerebral Venous Sinus Thrombosis
  • Intracranial Aneurysms: Treatment and Complications
  • Amyloidosis: Diagnosis, Treatment, Outcomes
  • Medical Imaging and Pathology Studies
  • Spinal Dysraphism and Malformations
  • Cerebrovascular and Carotid Artery Diseases
  • Pancreatitis Pathology and Treatment
  • Botulinum Toxin and Related Neurological Disorders
  • Prion Diseases and Protein Misfolding
  • Sympathectomy and Hyperhidrosis Treatments
  • Meningioma and schwannoma management

Université de Rouen Normandie
2016-2025

Centre Hospitalier Universitaire de Rouen
2016-2024

Sorbonne Université
2024

Centre Hospitalier Universitaire de Tours
2024

Assistance Publique – Hôpitaux de Paris
2021-2024

Inserm
2017-2023

Normandie Université
2017-2022

National Hospital for Neurology and Neurosurgery
2020-2022

University College London
2020-2022

Hudson Institute
2021

Cerebral amyloid angiopathy-related inflammation (CAA-RI) and biopsy-positive primary angiitis of the CNS (BP-PACNS) have overlapping clinicoradiologic presentations. It is unknown whether clinical radiologic features can differentiate CAA-RI from BP-PACNS both diseases different relapse rates. The objectives this study were to compare presentations rates in patients with vs BP-PACNS.

10.1212/wnl.0000000000209548 article EN Neurology 2024-06-20
Lou Grangeon David Wallon Camille Charbonnier Olivier Quenez Anne‐Claire Richard and 95 more Stéphane Rousseau Clara Budowski Thibaud Lebouvier Anne-Gaëlle Corbillé Marie Vidailhet Aurélie Méneret Emmanuel Roze Mathieu Anheim Christine Tranchant Pascal Favrole Jean‐Christophe Antoine Luc Defebvre Xavier Ayrignac Pierre Labauge Jérémie Pariente Michel Clanet David Maltête Anne Rovelet‐Lecrux Anne Boland Jean‐François Deleuze Pascal Favrole Christophe Verny Pierre Krystkowiak Ludivine Chamard Sébastien Moutton Cyril Goizet Claude Férec Serge Timsit S. Schaeffer Nathalie Derache Gilles Defer Franck Durif François Sellal Olivier Rouaud Christel Thauvin‐Robinet Stéphanie Cubizolle Mathilde Sauvée Amélie Leblanc Alexis Demas Alice Poisson Elisabeth Tournier‐Lasserve Dominique Hervé Hugues Chabriat Guillaume Grolez Nicolas Carrière Luc Defebvre Thibaud Lebouvier Tatiana Witjas Jean‐Philippe Azulay Frédérique Fluchère Mira Didic Karine Nguyen Mahmoud Charif Xavier Ayrignac Pierre Labauge C. Lionnet Cécilia Marelli Simon Gaud Tiphaine Rouaud Brice Laurens Emmanuelle Folgoas Bertrand Isidor Jean Chiésa Maud Pallix-Guyot Nicolas Gaillard Nadège Olivier Snejana Jurici Isabelle Marey Perrine Charles Claire Ewenczyck Alexandra Dürr Cécile Hubsch Aurélie Méneret Marie Vidailhet Yann Nadjar Isabelle Le Ber David Grabli Emmanuel Roze Vincent Navarro Sylvie Mecharles-Darrigol Julien Lagarde Marie Sarazin Marc Vérin Romain Lefaucheur David Maltête David Wallon Didier Hannequin Olivier Martinaud Lucie Guyant‐Maréchal Gaël Nicolas Thierry Frébourg Anne‐Claire Richard Dominique Campion Olivier Guillin Marion Yger

Primary familial brain calcification (PFBC) is a rare neurogenetic disorder with diverse neuropsychiatric expression. Mutations in four genes cause autosomal dominant PFBC: SLC20A2, XPR1, PDGFB and PDGFRB. Recently, biallelic mutations the MYORG gene have been reported to PFBC an recessive pattern of inheritance. We screened 29 unrelated probands negatively for identified 11 families or novel predicted damaging variant. studied clinical radiological features 16 patients these compared them...

10.1093/brain/awz095 article EN Brain 2019-03-20

This study was undertaken to identify susceptibility loci for cluster headache and obtain insights into relevant disease pathways.We carried out a genome-wide association study, where 852 UK 591 Swedish cases were compared with 5,614 1,134 controls, respectively. Following quality control imputation, single variant testing conducted using logistic mixed model each cohort. The 2 cohorts subsequently combined in merged analysis. Downstream analyses, such as gene-set enrichment, functional...

10.1002/ana.26150 article EN cc-by-nc-nd Annals of Neurology 2021-06-29

<h3>Background</h3> Moyamoya angiopathy (MMA) is characterised by a progressive stenosis of the terminal part internal carotid arteries and development abnormal collateral deep vessels. Its pathophysiology unknown. MMA can be sole manifestation disease (moyamoya disease) or associated with various conditions syndrome) including some Mendelian diseases. We aimed to investigate genetic basis moyamoya using whole exome sequencing (WES) approach conducted in sporadic cases without any overt...

10.1136/jmedgenet-2016-104432 article EN Journal of Medical Genetics 2017-03-25

Background and Purpose Moyamoya angiopathy (MMA) is a rare cerebral vasculopathy outside of Asia. In Japanese patients, vast majority patients carry the founder p.R4810K variant in RNF213 gene, familial cases are around 10%. European data about occurrence limited. The aim this study was to characterize clinical molecular features several families with parent-to-child transmission MMA. Methods Out 126 MMA probands referred, we identified 113 sporadic 13 probands. Segregation analysis showed...

10.1161/strokeaha.118.023972 article EN Stroke 2019-03-14

To report a triplication of the amyloid-β precursor protein (APP) locus along with relative messenger RNA (mRNA) expression in family autosomal dominant early-onset cerebral amyloid angiopathy (CAA) and Alzheimer disease (AD).Four copies APP gene were identified by quantitative multiplex PCR short fluorescent fragments, situ hybridization (FISH), array comparative genomic hybridization. mRNA levels assessed using reverse-transcription-digital droplet proband's whole blood compared 10...

10.1212/nxg.0000000000000609 article EN cc-by-nc-nd Neurology Genetics 2021-09-08

There is no consensus regarding the diagnostic value of cerebrospinal fluid (CSF) Alzheimer's disease (AD) biomarkers in cerebral amyloid angiopathy (CAA).To describe CSF levels Aβ 42, 40, total protein Tau, and phosphorylated-Tau (p-Tau) a large series probable CAA patients to compare with AD order identify specific pattern but also look for correlations neuroimaging profile.We retrospectively included from 2 French centers according modified Boston criteria who underwent lumbar puncture...

10.3233/jad-215208 article EN Journal of Alzheimer s Disease 2022-04-01

APP duplication is a rare genetic cause of Alzheimer disease and cerebral amyloid angiopathy (CAA). We aimed to evaluate the phenotypes duplications carriers.Clinical, radiological, neuropathological features 43 carriers from 24 French families were retrospectively analyzed, MRI cerebrospinal fluid (CSF) biomarkers compared 40 APP-negative CAA controls.Major neurocognitive disorders found in 90.2% symptomatic carriers, with prominent behavioral impairment 9.7%. Symptomatic intracerebral...

10.1186/s13195-023-01172-2 article EN cc-by Alzheimer s Research & Therapy 2023-05-11

Total Tau concentration in cerebrospinal fluid (CSF) is widely used as a biomarker the diagnosis of neurodegenerative process primarily Alzheimer's disease (AD). A particularly high level may indicate AD but also be associated with Creutzfeldt-Jakob (CJD). In such situations little known about distribution differential diagnoses.Our study aimed to describe different diagnoses encountered clinical practice for patients dementia and CSF levels over 1000 pg/ml. We studied p-Tau/Tau ratio...

10.3233/jad-151111 article EN Journal of Alzheimer s Disease 2016-03-30

Cluster headache is characterized by recurrent, unilateral attacks of excruciating pain associated with ipsilateral cranial autonomic symptoms. Although a wide array clinical, anatomical, physiological, and genetic data have informed multiple theories about the underlying pathophysiology, lack comprehensive mechanistic understanding has inhibited, on one hand, development new treatments and, other, identification features predictive response to established ones. The first-line drug,...

10.1093/brain/awaa388 article EN cc-by Brain 2020-10-17

To define the characteristics of post-traumatic headache with cluster phenotype (PTH-CH) and to compare these primary CH.A retrospective study was conducted patients seen between 2007 2017 in a centre diagnosed PTH-CH that developed within 7 days head trauma. A control cohort included 553 CH without any history trauma who attended clinic during same period. Data including demographics, attack response treatments were recorded.Twenty-six identified. Multivariate analysis revealed significant...

10.1136/jnnp-2019-322725 article EN cc-by-nc Journal of Neurology Neurosurgery & Psychiatry 2020-05-07

To determine the prevalence and clinical predictors of pituitary adenomas in cluster headache patients, order to necessity performing dedicated magnetic resonance imaging patients with headache.A retrospective study was conducted all consecutive diagnosed available brain between 2007 2017 a tertiary center. Data including demographics, attack characteristics, response treatments, results neuroimaging, routine function tests were recorded.Seven hundred eighteen attended clinic; 643 underwent...

10.1177/0333102420983303 article EN Cephalalgia 2021-01-06
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