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Zhao X, Ma X, Zhao H, Li T, Qiu Y, Shen Y, Feng J, Xu W. Unveiling the role of dorsal root ganglia in spasticity reduction: Insights from contralateral seventh cervical nerve cross transfer surgery. Brain Behav 2024; 14:e3613. [PMID: 38970224 PMCID: PMC11226549 DOI: 10.1002/brb3.3613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 06/12/2024] [Accepted: 06/15/2024] [Indexed: 07/08/2024] Open
Abstract
BACKGROUND Central nervous system (CNS) disorders, such as stroke, often lead to spasticity, which result in limb deformities and significant reduction in quality of life. Spasticity arises from disruptions in the normal functioning of cortical and descending inhibitory pathways in the brainstem, leading to abnormal muscle contractions. Contralateral seventh cervical nerve cross transfer (CC7) surgery has been proven to effectively reduce spasticity, but the specific mechanism for its effectiveness is unclear. METHODS This study aimed to investigate the changes in the dorsal root ganglia (DRG) following CC7 surgery. A comprehensive anatomical analysis was conducted through cadaveric study and magnetic resonance imaging (MRI) study, to accurately measure the regional anatomy of the C7 DRG. DRG perfusion changes were quantitatively assessed by comparing pre- and postoperative dynamic contrast-enhanced (DCE) MRI. RESULTS In CC7 surgery, the C7 nerve root on the affected side is cut close to the DRG (3.6 ± 1.0 mm), while the C7 nerve root on the healthy side is cut further away from the DRG (65.0 ± 10.0 mm). MRI studies revealed that after C7 proximal neurotomy on the affected side, there was an increase in DRG volume, vascular permeability, and perfusion; after C7 distal neurotomy on the healthy side, there was a decrease in DRG volume, with no significant changes in vascular permeability and perfusion. CONCLUSION This study provides preliminary insights into the mechanisms of spasticity reduction following CC7 surgery, indicating that changes in the DRG, such as increased vascular permeability and perfusion, could disrupt abnormal spinal γ-circuits. The resulting high-perfusion state of DRG, possibly due to heightened neuronal activity and metabolic demands, necessitating further research to verify this hypothesis.
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Affiliation(s)
- Xuanyu Zhao
- Department of Hand and Upper Extremity Surgery, Jing'an District Central Hospital, Branch of Huashan Hospital, the National Clinical Research Center for Aging and MedicineFudan UniversityShanghaiChina
| | - Xingyi Ma
- Department of Hand and Upper Extremity Surgery, Jing'an District Central Hospital, Branch of Huashan Hospital, the National Clinical Research Center for Aging and MedicineFudan UniversityShanghaiChina
| | - Huali Zhao
- Department of Radiology, Jing'an District Central Hospital, Branch of Huashan Hospital, the National Clinical Research Center for Aging and MedicineFudan UniversityShanghaiChina
| | - Tie Li
- Department of Hand and Upper Extremity Surgery, Jing'an District Central Hospital, Branch of Huashan Hospital, the National Clinical Research Center for Aging and MedicineFudan UniversityShanghaiChina
| | - Yanqun Qiu
- Department of Hand and Upper Extremity Surgery, Jing'an District Central Hospital, Branch of Huashan Hospital, the National Clinical Research Center for Aging and MedicineFudan UniversityShanghaiChina
| | - Yundong Shen
- Department of Hand and Upper Extremity Surgery, Jing'an District Central Hospital, Branch of Huashan Hospital, the National Clinical Research Center for Aging and MedicineFudan UniversityShanghaiChina
| | - Juntao Feng
- Department of Hand and Upper Extremity Surgery, Jing'an District Central Hospital, Branch of Huashan Hospital, the National Clinical Research Center for Aging and MedicineFudan UniversityShanghaiChina
| | - Wendong Xu
- Department of Hand and Upper Extremity Surgery, Jing'an District Central Hospital, Branch of Huashan Hospital, the National Clinical Research Center for Aging and MedicineFudan UniversityShanghaiChina
- Institute of Brain Science, State Key Laboratory of Medical Neurobiology and Collaborative Innovation Center for Brain ScienceFudan UniversityShanghaiChina
- Research Unit of Synergistic Reconstruction of Upper and Lower Limbs after Brain InjuryChinese Academy of Medical SciencesShanghaiChina
- Co‐innovation Center of NeuroregenerationNantong UniversityNantongChina
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Zedde M, Romani I, Scaravilli A, Cocozza S, Trojano L, Ragno M, Rifino N, Bersano A, Gerevini S, Pantoni L, Valzania F, Pascarella R. Expanding the Neurological Phenotype of Anderson-Fabry Disease: Proof of Concept for an Extrapyramidal Neurodegenerative Pattern and Comparison with Monogenic Vascular Parkinsonism. Cells 2024; 13:1131. [PMID: 38994983 DOI: 10.3390/cells13131131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2024] [Revised: 06/18/2024] [Accepted: 06/25/2024] [Indexed: 07/13/2024] Open
Abstract
Anderson-Fabry disease (AFD) is a genetic sphingolipidosis involving virtually the entire body. Among its manifestation, the involvement of the central and peripheral nervous system is frequent. In recent decades, it has become evident that, besides cerebrovascular damage, a pure neuronal phenotype of AFD exists in the central nervous system, which is supported by clinical, pathological, and neuroimaging data. This neurodegenerative phenotype is often clinically characterized by an extrapyramidal component similar to the one seen in prodromal Parkinson's disease (PD). We analyzed the biological, clinical pathological, and neuroimaging data supporting this phenotype recently proposed in the literature. Moreover, we compared the neurodegenerative PD phenotype of AFD with a classical monogenic vascular disease responsible for vascular parkinsonism and cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). A substantial difference in the clinical and neuroimaging features of neurodegenerative and vascular parkinsonism phenotypes emerged, with AFD being potentially responsible for both forms of the extrapyramidal involvement, and CADASIL mainly associated with the vascular subtype. The available studies share some limitations regarding both patients' information and neurological and genetic investigations. Further studies are needed to clarify the potential association between AFD and extrapyramidal manifestations.
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Affiliation(s)
- Marialuisa Zedde
- Neurology Unit, Stroke Unit, Azienda Unità Sanitaria Locale-IRCCS di Reggio Emilia, Viale Risorgimento 80, 42123 Reggio Emilia, Italy
| | - Ilaria Romani
- Department of Neurosciences, Psychology, Pharmacology and Child Health, University of Florence, 50139 Firenze, Italy
| | - Alessandra Scaravilli
- Department of Advanced Biomedical Sciences, University of Naples "Federico II", 80133 Napoli, Italy
| | - Sirio Cocozza
- Department of Advanced Biomedical Sciences, University of Naples "Federico II", 80133 Napoli, Italy
| | - Luigi Trojano
- Dipartimento di Psicologia, Università della Campania 'Luigi Vanvitelli', viale Ellittico 31, 81100 Caserta, Italy
| | - Michele Ragno
- Centro Medico Salute 23, Via O. Licini 5, 63066 Grottammare (AP), Italy
| | - Nicola Rifino
- Cerebrovascular Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milano, Italy
| | - Anna Bersano
- Cerebrovascular Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milano, Italy
| | - Simonetta Gerevini
- Head Diagnostic Dept and Neuroradiology Unit, ASST Papa Giovanni XXIII, 24127 Bergamo, Italy
| | - Leonardo Pantoni
- Neuroscience Research Center, Department of Biomedical and Clinical Science, University of Milan, 20122 Milano, Italy
| | - Franco Valzania
- Neurology Unit, Stroke Unit, Azienda Unità Sanitaria Locale-IRCCS di Reggio Emilia, Viale Risorgimento 80, 42123 Reggio Emilia, Italy
| | - Rosario Pascarella
- Neuroradiology Unit, Azienda Unità Sanitaria Locale-IRCCS di Reggio Emilia, Viale Risorgimento 80, 42123 Reggio Emilia, Italy
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Schindehütte M, Weiner S, Klug K, Hölzli L, Nauroth-Kreß C, Hessenauer F, Kampf T, Homola GA, Nordbeck P, Wanner C, Sommer C, Üçeyler N, Pham M. Dorsal root ganglion magnetic resonance imaging biomarker correlations with pain in Fabry disease. Brain Commun 2024; 6:fcae155. [PMID: 38751382 PMCID: PMC11095551 DOI: 10.1093/braincomms/fcae155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 01/20/2024] [Accepted: 04/29/2024] [Indexed: 05/18/2024] Open
Abstract
Fabry disease is a rare monogenetic, X-linked lysosomal storage disorder with neuropathic pain as one characteristic symptom. Impairment of the enzyme alpha-galactosidase A leads to an accumulation of globotriaosylceramide in the dorsal root ganglia. Here, we investigate novel dorsal root ganglia MR imaging biomarkers and their association with Fabry genotype and pain phenotype. In this prospective study, 89 Fabry patients were examined using a standardized 3 T MRI protocol of the dorsal root ganglia. Fabry pain was assessed through a validated Fabry pain questionnaire. The genotype was determined by diagnostic sequencing of the alpha-galactosidase A gene. MR imaging end-points were dorsal root ganglia volume by voxel-wise morphometric analysis and dorsal root ganglia T2 signal. Reference groups included 55 healthy subjects and Fabry patients of different genotype categories without Fabry pain. In patients with Fabry pain, T2 signal of the dorsal root ganglia was increased by +39.2% compared to healthy controls (P = 0.001) and by +29.4% compared to painless Fabry disease (P = 0.017). This effect was pronounced in hemizygous males (+40.7% compared to healthy; P = 0.008 and +29.1% compared to painless; P = 0.032) and was consistently observed across the genotype spectrum of nonsense (+38.1% compared to healthy, P < 0.001) and missense mutations (+39.2% compared to healthy; P = 0.009). T2 signal of dorsal root ganglia and globotriaosylsphingosine levels were the only independent predictors of Fabry pain (P = 0.047; P = 0.002). Volume of dorsal root ganglia was enlarged by +46.0% in Fabry males in the nonsense compared to missense genotype category (P = 0.005) and by +34.5% compared to healthy controls (P = 0.034). In painful Fabry disease, MRI T2 signal of dorsal root ganglia is increased across different genotypes. Dorsal root ganglion MRI T2 signal as a novel in vivo imaging biomarker may help to better understand whether Fabry pain is modulated or even caused by dorsal root ganglion pathology.
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Affiliation(s)
- Magnus Schindehütte
- Department of Neuroradiology, University Hospital Würzburg, Würzburg 97080, Germany
| | - Simon Weiner
- Department of Neuroradiology, University Hospital Würzburg, Würzburg 97080, Germany
| | - Katharina Klug
- Department of Neurology, University Hospital Würzburg, Würzburg 97080, Germany
| | - Lea Hölzli
- Department of Neuroradiology, University Hospital Würzburg, Würzburg 97080, Germany
| | | | - Florian Hessenauer
- Department of Neuroradiology, University Hospital Würzburg, Würzburg 97080, Germany
| | - Thomas Kampf
- Department of Neuroradiology, University Hospital Würzburg, Würzburg 97080, Germany
| | - György A Homola
- Department of Neuroradiology, University Hospital Würzburg, Würzburg 97080, Germany
| | - Peter Nordbeck
- Department of Internal Medicine, University Hospital Würzburg, Würzburg 97080, Germany
| | - Christoph Wanner
- Department of Internal Medicine, University Hospital Würzburg, Würzburg 97080, Germany
| | - Claudia Sommer
- Department of Neurology, University Hospital Würzburg, Würzburg 97080, Germany
| | - Nurcan Üçeyler
- Department of Neurology, University Hospital Würzburg, Würzburg 97080, Germany
| | - Mirko Pham
- Department of Neuroradiology, University Hospital Würzburg, Würzburg 97080, Germany
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Waltz TB, Chao D, Prodoehl EK, Enders JD, Ehlers VL, Dharanikota BS, Dahms NM, Isaeva E, Hogan QH, Pan B, Stucky CL. Fabry disease Schwann cells release p11 to induce sensory neuron hyperactivity. JCI Insight 2024; 9:e172869. [PMID: 38646936 PMCID: PMC11141882 DOI: 10.1172/jci.insight.172869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 03/05/2024] [Indexed: 04/25/2024] Open
Abstract
Patients with Fabry disease suffer from chronic debilitating pain and peripheral sensory neuropathy with minimal treatment options, but the cellular drivers of this pain are unknown. Here, we propose a mechanism we believe to be novel in which altered signaling between Schwann cells and sensory neurons underlies the peripheral sensory nerve dysfunction we observed in a genetic rat model of Fabry disease. Using in vivo and in vitro electrophysiological recordings, we demonstrated that Fabry rat sensory neurons exhibited pronounced hyperexcitability. Schwann cells probably contributed to this finding because application of mediators released from cultured Fabry Schwann cells induced spontaneous activity and hyperexcitability in naive sensory neurons. We examined putative algogenic mediators using proteomic analysis and found that Fabry Schwann cells released elevated levels of the protein p11 (S100A10), which induced sensory neuron hyperexcitability. Removal of p11 from Fabry Schwann cell media caused hyperpolarization of neuronal resting membrane potentials, indicating that p11 may contribute to the excessive neuronal excitability caused by Fabry Schwann cells. These findings demonstrate that sensory neurons from rats with Fabry disease exhibit hyperactivity caused in part by Schwann cell release of the protein p11.
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Affiliation(s)
| | | | | | | | | | | | - Nancy M. Dahms
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Elena Isaeva
- Department of Cell Biology, Neurobiology & Anatomy
| | | | - Bin Pan
- Department of Anesthesiology; and
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Preisner F, Pitarokoili K, Lueling B, Motte J, Fisse AL, Grüter T, Godel T, Schwarz D, Heiland S, Gold R, Bendszus M, Kronlage M. Quantitative magnetic resonance neurography in chronic inflammatory demyelinating polyradiculoneuropathy: A longitudinal study over 6 years. Ann Clin Transl Neurol 2024; 11:593-606. [PMID: 38111964 DOI: 10.1002/acn3.51978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 12/03/2023] [Accepted: 12/05/2023] [Indexed: 12/20/2023] Open
Abstract
OBJECTIVE To evaluate magnetic resonance neurography (MRN) for the longitudinal assessment of patients with chronic inflammatory demyelinating polyradiculoneuropathy (CIDP). METHODS Prospective examination of twelve CIDP patients by neurological assessment, MRN, and nerve conduction studies in 2016 and 6 years later in 2022. Imaging parameters were compared with matched healthy controls and correlated with clinical and electrophysiological markers. The MRN protocol included T2-weighted imaging, diffusion tensor imaging (DTI), T2 relaxometry, and magnetization transfer imaging (MTI). RESULTS Nerve cross-sectional area (CSA) was increased in CIDP patients compared to controls (plexus: p = 0.003; sciatic nerve: p < 0.001). Over 6 years, nerve CSA decreased in CIDP patients, most pronounced at the lumbosacral plexus (p = 0.015). Longitudinally, changes in CSA correlated with changes in the inflammatory neuropathy cause and treatment validated overall disability sum score (INCAT/ODSS) (p = 0.006). High initial nerve CSA was inversely correlated with changes in the INCAT/ODSS over 6 years (p < 0.05). The DTI parameter fractional anisotropy (FA) showed robust correlations with electrodiagnostic testing both cross-sectionally and longitudinally (p < 0.05). MTI as a newly added imaging technique revealed a significantly reduced magnetization transfer ratio (MTR) in CIDP patients (p < 0.01), suggesting underlying changes in macromolecular tissue composition, and correlated significantly with electrophysiological parameters of demyelination (p < 0.05). INTERPRETATION This study provides evidence that changes in nerve CSA and FA reflect the clinical and electrophysiological course of CIDP patients. Initial nerve hypertrophy might predict a rather benign course or better therapy response.
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Affiliation(s)
- Fabian Preisner
- Department of Neuroradiology, Neurological Clinic, Heidelberg University Hospital, 69120, Heidelberg, Germany
| | - Kalliopi Pitarokoili
- Department of Neurology, St. Josef Hospital, Ruhr University of Bochum, 44791, Bochum, Germany
| | - Benjamin Lueling
- Department of Neurology, St. Josef Hospital, Ruhr University of Bochum, 44791, Bochum, Germany
| | - Jeremias Motte
- Department of Neurology, St. Josef Hospital, Ruhr University of Bochum, 44791, Bochum, Germany
| | - Anna Lena Fisse
- Department of Neurology, St. Josef Hospital, Ruhr University of Bochum, 44791, Bochum, Germany
| | - Thomas Grüter
- Department of Neurology, St. Josef Hospital, Ruhr University of Bochum, 44791, Bochum, Germany
| | - Tim Godel
- Department of Neuroradiology, Neurological Clinic, Heidelberg University Hospital, 69120, Heidelberg, Germany
| | - Daniel Schwarz
- Department of Neuroradiology, Neurological Clinic, Heidelberg University Hospital, 69120, Heidelberg, Germany
| | - Sabine Heiland
- Department of Neuroradiology, Neurological Clinic, Heidelberg University Hospital, 69120, Heidelberg, Germany
| | - Ralf Gold
- Department of Neurology, St. Josef Hospital, Ruhr University of Bochum, 44791, Bochum, Germany
| | - Martin Bendszus
- Department of Neuroradiology, Neurological Clinic, Heidelberg University Hospital, 69120, Heidelberg, Germany
| | - Moritz Kronlage
- Department of Neuroradiology, Neurological Clinic, Heidelberg University Hospital, 69120, Heidelberg, Germany
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Mackels L, Servais L. The Importance of Early Treatment of Inherited Neuromuscular Conditions. J Neuromuscul Dis 2024; 11:253-274. [PMID: 38306060 DOI: 10.3233/jnd-230189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
There has been tremendous progress in treatment of neuromuscular diseases over the last 20 years, which has transformed the natural history of these severely debilitating conditions. Although the factors that determine the response to therapy are many and in some instance remain to be fully elucidated, early treatment clearly has a major impact on patient outcomes across a number of inherited neuromuscular conditions. To improve patient care and outcomes, clinicians should be aware of neuromuscular conditions that require prompt treatment initiation. This review describes data that underscore the importance of early treatment of children with inherited neuromuscular conditions with an emphasis on data resulting from newborn screening efforts.
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Affiliation(s)
- Laurane Mackels
- MDUK Oxford Neuromuscular Centre, Department of Paediatrics, University of Oxford, Oxford, United Kingdom
- Adult Neurology Department, Citadelle Hospital, Liège, Belgium
| | - Laurent Servais
- Neuromuscular Centre, Division of Paediatrics, University and University Hospital of Liège, Liège, Belgium
- MDUK Oxford Neuromuscular Centre, Department of Paediatrics, University of Oxford & NIHR Oxford Biomedical Research Centre, Oxford, United Kingdom
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Londregan A, Alexander TD, Covarrubias M, Waldman SA. Fundamental Neurochemistry Review: The role of enteroendocrine cells in visceral pain. J Neurochem 2023; 167:719-732. [PMID: 38037432 PMCID: PMC10917140 DOI: 10.1111/jnc.16022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 11/03/2023] [Accepted: 11/15/2023] [Indexed: 12/02/2023]
Abstract
While visceral pain is commonly associated with disorders of the gut-brain axis, underlying mechanisms are not fully understood. Dorsal root ganglion (DRG) neurons innervate visceral structures and undergo hypersensitization in inflammatory models. The characterization of peripheral DRG neuron terminals is an active area of research, but recent work suggests that they communicate with enteroendocrine cells (EECs) in the gut. EECs sense stimuli in the intestinal lumen and communicate information to the brain through hormonal and electrical signaling. In that context, EECs are a target for developing therapeutics to treat visceral pain. Linaclotide is an FDA-approved treatment for chronic constipation that activates the intestinal membrane receptor guanylyl cyclase C (GUCY2C). Clinical trials revealed that linaclotide relieves both constipation and visceral pain. We recently demonstrated that the analgesic effect of linaclotide reflects the overexpression of GUCY2C on neuropod cells, a specialized subtype of EECs. While this brings some clarity to the relationship between linaclotide and visceral analgesia, questions remain about the intracellular signaling mechanisms and neurotransmitters mediating this communication. In this Fundamental Neurochemistry Review, we discuss what is currently known about visceral nociceptors, enteroendocrine cells, and the gut-brain axis, and ongoing areas of research regarding that axis and visceral pain.
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Affiliation(s)
- Annie Londregan
- Department of Pharmacology, Physiology, and Cancer Biology, Thomas Jefferson University, Philadelphia, Pennsylvania 19107
| | - Tyler D. Alexander
- Department of Neuroscience, Thomas Jefferson University, Philadelphia, Pennsylvania 19107
- Vicki & Jack Farber Institute of Neuroscience at Jefferson Health, Philadelphia, Pennsylvania 19107
- Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania 19107
| | - Manuel Covarrubias
- Department of Neuroscience, Thomas Jefferson University, Philadelphia, Pennsylvania 19107
- Vicki & Jack Farber Institute of Neuroscience at Jefferson Health, Philadelphia, Pennsylvania 19107
- Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania 19107
| | - Scott A. Waldman
- Department of Pharmacology, Physiology, and Cancer Biology, Thomas Jefferson University, Philadelphia, Pennsylvania 19107
- Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania 19107
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Klug K, Spitzel M, Hans C, Klein A, Schottmann NM, Erbacher C, Üçeyler N. Endothelial Cell Dysfunction and Hypoxia as Potential Mediators of Pain in Fabry Disease: A Human-Murine Translational Approach. Int J Mol Sci 2023; 24:15422. [PMID: 37895103 PMCID: PMC10607880 DOI: 10.3390/ijms242015422] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 10/13/2023] [Accepted: 10/15/2023] [Indexed: 10/29/2023] Open
Abstract
Fabry disease (FD) is caused by α-galactosidase A (AGAL) enzyme deficiency, leading to globotriaosylceramide accumulation (Gb3) in several cell types. Pain is one of the pathophysiologically incompletely understood symptoms in FD patients. Previous data suggest an involvement of hypoxia and mitochondriopathy in FD pain development at dorsal root ganglion (DRG) level. Using immunofluorescence and quantitative real-time polymerase chain reaction (qRT PCR), we investigated patient-derived endothelial cells (EC) and DRG tissue of the GLA knockout (KO) mouse model of FD. We address the question of whether hypoxia and mitochondriopathy contribute to FD pain pathophysiology. In EC of FD patients (P1 with pain and, P2 without pain), we found dysregulated protein expression of hypoxia-inducible factors (HIF) 1a and HIF2 compared to the control EC (p < 0.01). The protein expression of the HIF downstream target vascular endothelial growth factor A (VEGFA, p < 0.01) was reduced and tube formation was hampered in the P1 EC compared to the healthy EC (p < 0.05). Tube formation ability was rescued by applying transforming growth factor beta (TGFβ) inhibitor SB-431542. Additionally, we found dysregulated mitochondrial fusion/fission characteristics in the P1 and P2 EC (p < 0.01) and depolarized mitochondrial membrane potential in P2 compared to control EC (p < 0.05). Complementary to human data, we found upregulated hypoxia-associated genes in the DRG of old GLA KO mice compared to WT DRG (p < 0.01). At protein level, nuclear HIF1a was higher in the DRG neurons of old GLA KO mice compared to WT mice (p < 0.01). Further, the HIF1a downstream target CA9 was upregulated in the DRG of old GLA KO mice compared to WT DRG (p < 0.01). Similar to human EC, we found a reduction in the vascular characteristics in GLA KO DRG compared to WT (p < 0.05). We demonstrate increased hypoxia, impaired vascular properties, and mitochondrial dysfunction in human FD EC and complementarily at the GLA KO mouse DRG level. Our data support the hypothesis that hypoxia and mitochondriopathy in FD EC and GLA KO DRG may contribute to FD pain development.
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Affiliation(s)
- Katharina Klug
- Department of Neurology, University Hospital of Würzburg, Josef-Schneider-Str. 11, 97080 Würzburg, Germany; (K.K.); (M.S.); (C.H.); (N.M.S.); (C.E.)
| | - Marlene Spitzel
- Department of Neurology, University Hospital of Würzburg, Josef-Schneider-Str. 11, 97080 Würzburg, Germany; (K.K.); (M.S.); (C.H.); (N.M.S.); (C.E.)
| | - Clara Hans
- Department of Neurology, University Hospital of Würzburg, Josef-Schneider-Str. 11, 97080 Würzburg, Germany; (K.K.); (M.S.); (C.H.); (N.M.S.); (C.E.)
| | - Alexandra Klein
- Department of Neurology, University Hospital of Würzburg, Josef-Schneider-Str. 11, 97080 Würzburg, Germany; (K.K.); (M.S.); (C.H.); (N.M.S.); (C.E.)
| | - Nicole Michelle Schottmann
- Department of Neurology, University Hospital of Würzburg, Josef-Schneider-Str. 11, 97080 Würzburg, Germany; (K.K.); (M.S.); (C.H.); (N.M.S.); (C.E.)
| | - Christoph Erbacher
- Department of Neurology, University Hospital of Würzburg, Josef-Schneider-Str. 11, 97080 Würzburg, Germany; (K.K.); (M.S.); (C.H.); (N.M.S.); (C.E.)
| | - Nurcan Üçeyler
- Department of Neurology, University Hospital of Würzburg, Josef-Schneider-Str. 11, 97080 Würzburg, Germany; (K.K.); (M.S.); (C.H.); (N.M.S.); (C.E.)
- Würzburg Fabry Center for Interdisciplinary Therapy (FAZIT), University Hospital of Würzburg, 97080 Würzburg, Germany
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Hustinx M, Shorrocks AM, Servais L. Novel Therapeutic Approaches in Inherited Neuropathies: A Systematic Review. Pharmaceutics 2023; 15:1626. [PMID: 37376074 DOI: 10.3390/pharmaceutics15061626] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/17/2023] [Accepted: 05/27/2023] [Indexed: 06/29/2023] Open
Abstract
The management of inherited neuropathies relies mostly on the treatment of symptoms. In recent years, a better understanding of the pathogenic mechanisms that underlie neuropathies has allowed for the development of disease-modifying therapies. Here, we systematically review the therapies that have emerged in this field over the last five years. An updated list of diseases with peripheral neuropathy as a clinical feature was created based on panels of genes used clinically to diagnose inherited neuropathy. This list was extended by an analysis of published data by the authors and verified by two experts. A comprehensive search for studies of human patients suffering from one of the diseases in our list yielded 28 studies that assessed neuropathy as a primary or secondary outcome. Although the use of various scales and scoring systems made comparisons difficult, this analysis identified diseases associated with neuropathy for which approved therapies exist. An important finding is that the symptoms and/or biomarkers of neuropathies were assessed only in a minority of cases. Therefore, further investigation of treatment efficacy on neuropathies in future trials must employ objective, consistent methods such as wearable technologies, motor unit indexes, MRI or sonography imaging, or the use of blood biomarkers associated with consistent nerve conduction studies.
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Affiliation(s)
- Manon Hustinx
- Department of Paediatrics, MDUK Oxford Neuromuscular Centre and, NIHR Oxford Biomedical Research Centre, University of Oxford, Oxford OX1 3DW, UK
- Centre de Référence des Maladies Neuromusculaires, Department of Neurology, University Hospital Liège, and University of Liège, 4000 Liège, Belgium
| | - Ann-Marie Shorrocks
- Department of Paediatrics, MDUK Oxford Neuromuscular Centre and, NIHR Oxford Biomedical Research Centre, University of Oxford, Oxford OX1 3DW, UK
| | - Laurent Servais
- Department of Paediatrics, MDUK Oxford Neuromuscular Centre and, NIHR Oxford Biomedical Research Centre, University of Oxford, Oxford OX1 3DW, UK
- Centre de Référence des Maladies Neuromusculaires, Department of Paediatrics, University Hospital Liège, and University of Liège, 4000 Liège, Belgium
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Waltz TB, Chao D, Prodoehl EK, Ehlers VL, Dharanikota BS, Dahms NM, Isaeva E, Hogan QH, Pan B, Stucky CL. Schwann cell release of p11 induces sensory neuron hyperactivity in Fabry disease. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.26.542493. [PMID: 37292928 PMCID: PMC10245981 DOI: 10.1101/2023.05.26.542493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Patients with Fabry disease suffer from chronic debilitating pain and peripheral sensory neuropathy with minimal treatment options, but the cellular drivers of this pain are unknown. Here, we propose a novel mechanism by which altered signaling between Schwann cells and sensory neurons underlies the peripheral sensory nerve dysfunction we observe in a genetic rat model of Fabry disease. Using in vivo and in vitro electrophysiological recordings, we demonstrate that Fabry rat sensory neurons exhibit pronounced hyperexcitability. Schwann cells likely contribute to this finding as application of mediators released from cultured Fabry Schwann cells induces spontaneous activity and hyperexcitability in naïve sensory neurons. We examined putative algogenic mediators using proteomic analysis and found that Fabry Schwann cells release elevated levels of the protein p11 (S100-A10) which induces sensory neuron hyperexcitability. Removal of p11 from Fabry Schwann cell media causes hyperpolarization of neuronal resting membrane potential, indicating that p11 contributes to the excessive neuronal excitability caused by Fabry Schwann cells. These findings demonstrate that rats with Fabry disease exhibit sensory neuron hyperexcitability caused in part by Schwann cell release of the protein p11.
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Choconta JL, Labi V, Dumbraveanu C, Kalpachidou T, Kummer KK, Kress M. Age-related neuroimmune signatures in dorsal root ganglia of a Fabry disease mouse model. Immun Ageing 2023; 20:22. [PMID: 37173694 PMCID: PMC10176851 DOI: 10.1186/s12979-023-00346-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/03/2023] [Indexed: 05/15/2023]
Abstract
Pain in Fabry disease (FD) is generally accepted to result from neuronal damage in the peripheral nervous system as a consequence of excess lipid storage caused by alpha-galactosidase A (α-Gal A) deficiency. Signatures of pain arising from nerve injuries are generally associated with changes of number, location and phenotypes of immune cells within dorsal root ganglia (DRG). However, the neuroimmune processes in the DRG linked to accumulating glycosphingolipids in Fabry disease are insufficiently understood.Therefore, using indirect immune fluorescence microscopy, transmigration assays and FACS together with transcriptomic signatures associated with immune processes, we assessed age-dependent neuroimmune alterations in DRG obtained from mice with a global depletion of α-Gal A as a valid mouse model for FD. Macrophage numbers in the DRG of FD mice were unaltered, and BV-2 cells as a model for monocytic cells did not show augmented migratory reactions to glycosphingolipids exposure suggesting that these do not act as chemoattractants in FD. However, we found pronounced alterations of lysosomal signatures in sensory neurons and of macrophage morphology and phenotypes in FD DRG. Macrophages exhibited reduced morphological complexity indicated by a smaller number of ramifications and more rounded shape, which were age dependent and indicative of premature monocytic aging together with upregulated expression of markers CD68 and CD163.In our FD mouse model, the observed phenotypic changes in myeloid cell populations of the DRG suggest enhanced phagocytic and unaltered proliferative capacity of macrophages as compared to wildtype control mice. We suggest that macrophages may participate in FD pathogenesis and targeting macrophages at an early stage of FD may offer new treatment options other than enzyme replacement therapy.
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Affiliation(s)
- Jeiny Luna Choconta
- Institute of Physiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Verena Labi
- Institute of Developmental Immunology, Medical University of Innsbruck, Innsbruck, Austria
| | | | | | - Kai K Kummer
- Institute of Physiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Michaela Kress
- Institute of Physiology, Medical University of Innsbruck, Innsbruck, Austria.
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Murakami T, Watanabe H, Yamamoto A, Sunada Y. Magnetic resonance imaging of dorsal root ganglion in a pre-symptomatic subject with familial amyloid polyneuropathy transthyretin E61K. J Neurol Sci 2022; 440:120329. [DOI: 10.1016/j.jns.2022.120329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 06/08/2022] [Accepted: 06/21/2022] [Indexed: 11/30/2022]
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Grigolashvili M, Kim E, Muratbekova S, Omarova S, Smagulov A, Bektas G, Tuleuov R, Madibraimova S, Pakhomov A, Parkhanovich O, Pogorelova E, Kiyakpaeva G. Neurological Manifestations of Fabry Disease: Literature Review. Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.9681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND: Fabry disease (FD) or Anderson FD is a hereditary disease belonging to the group of lysosomal storage diseases caused by decreased or absent activity of the enzyme α-galactosidase A. Enzyme deficiency leads to accumulation of glycospholipids in the lysosomes of cells of various organs, including the heart, kidneys, nervous system, and vascular endothelium. The complexity of the diagnosis of FD is due to the variety of its symptoms, the simultaneous involvement of many organs and systems. At present, possible pathogenetic treatment of the disease is enzyme replacement therapy, but its effectiveness is reduced in the later stages of the disease, when there are irreversible abnormal changes in vital organs and systems. In this regard, an urgent task is the early diagnosis of FD.
AIM: Determination of neurological manifestations of FD as well as clinical criteria for screening for FD.
MATERIALS AND METHODS: We analyzed cohort studies, randomized controlled trials, systematic reviews and meta-analyses, case-control studies, and case series from scientific medical databases: PubMed, Web of Science, Google Scholar in Russian, and English languages.
CONCLUSION: The authors found that lesions of the nervous system in FD are detected in more than 80% of patients and can manifest as isolated or combined lesions of both the central and peripheral and autonomic nervous systems.
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Dorsal Root Ganglia Volume—Normative Values, Correlation with Demographic Determinants and Reliability of Three Different Methods of Volumetry. Diagnostics (Basel) 2022; 12:diagnostics12071570. [PMID: 35885475 PMCID: PMC9323629 DOI: 10.3390/diagnostics12071570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/22/2022] [Accepted: 06/27/2022] [Indexed: 11/17/2022] Open
Abstract
Background: Dorsal root ganglia (DRG) volume assessment by MR-Neurography (MRN) has evolved to an important imaging marker in the diagnostic workup of various peripheral neuropathies and pain syndromes. The aim of this study was (1) to assess normal values of DRG volume and correlations with demographic determinants and (2) to quantify the inter-reader and inter-method reliability of three different methods of DRG volumetry. Methods: Sixty healthy subjects (mean age: 59.1, range 23–79) were examined using a 3D T2-weighted MRN of the lumbosacral plexus at 3 Tesla. Normal values of DRG L3 to S2 were obtained after exact volumetry based on manual 3D segmentation and correlations with demographic variables were assessed. For the assessment of inter-reader and inter-method reliability, DRG volumes in a subset of 25 participants were measured by two independent readers, each applying (1) exact volumetry based on 3D segmentation, (2) axis-corrected, and (3) non-axis-corrected volume estimation. Intraclass correlation coefficients were reported and the Bland–Altman analysis was conducted. Results: Mean DRG volumes ranged from 124.8 mm3 for L3 to 323.3 mm3 for S1 and did not differ between right and left DRG. DRG volume (mean of L3 to S1) correlated with body height (r = 0.42; p = 0.0008) and weight (r = 0.34; p = 0.0087). DRG of men were larger than of women (p = 0.0002); however, no difference remained after correction for body height. Inter-reader reliability was high for all three methods but best for exact volumetry (ICC = 0.99). While axis-corrected estimation was not associated with a relevant bias, non-axis-corrected estimation systematically overestimated DRG volume by on average of 15.55 mm3 (reader 1) or 18.00 mm3 (reader 2) when compared with exact volumetry. Conclusion: The here presented normal values of lumbosacral DRG volume and the correlations with height and weight may be considered in future disease specific studies and possible clinical applications. Exact volumetry was most reliable and should be considered the gold standard. However, the reliability of axis-corrected and non-axis-corrected volume estimation was also high and might still be sufficient, depending on the degree of the required measurement accuracy.
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Dysregulation of Immune Response Mediators and Pain-Related Ion Channels Is Associated with Pain-like Behavior in the GLA KO Mouse Model of Fabry Disease. Cells 2022; 11:cells11111730. [PMID: 35681422 PMCID: PMC9179379 DOI: 10.3390/cells11111730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/19/2022] [Accepted: 05/21/2022] [Indexed: 12/28/2022] Open
Abstract
Fabry disease (FD) is a rare life-threatening disorder caused by deficiency of the alpha-galactosidase A (GLA) enzyme with a characteristic pain phenotype. Impaired GLA production or function leads to the accumulation of the cell membrane compound globotriaosylceramide (Gb3) in the neurons of the dorsal root ganglia (DRG) of FD patients. Applying immunohistochemistry (IHC) and quantitative real-time polymerase chain reaction (qRT PCR) analysis on DRG tissue of the GLA knockout (KO) mouse model of FD, we address the question of how Gb3 accumulation may contribute to FD pain and focus on the immune system and pain-associated ion channel gene expression. We show a higher Gb3 load in the DRG of young (<6 months) (p < 0.01) and old (≥12 months) (p < 0.001) GLA KO mice compared to old wildtype (WT) littermates, and an overall suppressed immune response in the DRG of old GLA KO mice, represented by a reduced number of CD206+ macrophages (p < 0.01) and lower gene expression levels of the inflammation-associated targets interleukin(IL)1b (p < 0.05), IL10 (p < 0.001), glial fibrillary acidic protein (GFAP) (p < 0.05), and leucine rich alpha-2-glycoprotein 1 (LRG1) (p < 0.01) in the DRG of old GLA KO mice compared to old WT. Dysregulation of immune-related genes may be linked to lower gene expression levels of the pain-associated ion channels calcium-activated potassium channel 3.1 (KCa3.1) and transient receptor potential ankyrin 1 channel (TRPA1). Ion channel expression might further be disturbed by impaired sphingolipid recruitment mediated via the lipid raft marker flotillin-1 (FLOT1). This impairment is represented by an increased number of FLOT1+ DRG neurons with a membranous expression pattern in old GLA KO mice compared to young GLA KO, young WT, and old WT mice (p < 0.001 each). Further, we provide evidence for aberrant behavior of GLA KO mice, which might be linked to dysregulated ion channel gene expression levels and disturbed FLOT1 distribution patterns. Behavioral testing revealed mechanical hypersensitivity in young (p < 0.01) and old (p < 0.001) GLA KO mice compared to WT, heat hypersensitivity in young GLA KO mice (p < 0.001) compared to WT, age-dependent heat hyposensitivity in old GLA KO mice (p < 0.001) compared to young GLA KO mice, and cold hyposensitivity in young (p < 0.001) and old (p < 0.001) GLA KO mice compared to WT, which well reflects the clinical phenotype observed in FD patients.
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Weiner S, Strinitz M, Herfurth J, Hessenauer F, Nauroth-Kreß C, Kampf T, Homola GA, Üçeyler N, Sommer C, Pham M, Schindehütte M. Dorsal Root Ganglion Volumetry by MR Gangliography. AJNR Am J Neuroradiol 2022; 43:769-775. [PMID: 35450855 PMCID: PMC9089252 DOI: 10.3174/ajnr.a7487] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 02/12/2022] [Indexed: 12/29/2022]
Abstract
BACKGROUND AND PURPOSE Dorsal root ganglion MR imaging (MR gangliography) is increasingly gaining clinical-scientific relevance. However, dorsal root ganglion morphometry by MR imaging is typically performed under the assumption of ellipsoid geometry, which remains to be validated. MATERIALS AND METHODS Sixty-four healthy volunteers (37 [57.8%] men; mean age, 31.5 [SD, 8.3] years) underwent MR gangliography of the bilateral L4-S2 levels (3D-T2WI TSE spectral attenuated inversion recovery-sampling perfection with application-optimized contrasts by using different flip angle evolution, isotropic voxels = 1.1 mm³, TE = 301 ms). Ground truth dorsal root ganglion volumes were bilaterally determined for 96 dorsal root ganglia (derivation cohort) by expert manual 3D segmentation by 3 independent raters. These ground truth dorsal root ganglion volumes were then compared with geometric ellipsoid dorsal root ganglion approximations as commonly practiced for dorsal root ganglion morphometry. On the basis of the deviations from ellipsoid geometry, improved volume estimation could be derived and was finally applied to a large human validation cohort (510 dorsal root ganglia). RESULTS Commonly used equations of ellipsoid geometry underestimate true dorsal root ganglion volume by large degrees (factor = 0.42-0.63). Ground truth segmentation enabled substantially optimizing dorsal root ganglion geometric approximation using its principal axes lengths by deriving the dorsal root ganglion volume term of [Formula: see text]. Using this optimization, the mean volumes of 510 lumbosacral healthy dorsal root ganglia were as follows: L4: 211.3 (SD, 52.5) mm³, L5: 290.7 (SD, 90.9) mm³, S1: 384.2 (SD, 145.0) mm³, and S2: 192.4 (SD, 52.6) mm³. Dorsal root ganglion volume increased from L4 to S1 and decreased from S1 to S2 (P < .001). Dorsal root ganglion volume correlated with subject height (r = . 22, P < .001) and was higher in men (P < .001). CONCLUSIONS Dorsal root ganglion volumetry by measuring its principal geometric axes on MR gangliography can be substantially optimized. By means of this optimization, dorsal root ganglion volume distribution was estimated in a large healthy cohort for the clinically most relevant lumbosacral levels, L4-S2.
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Affiliation(s)
- S Weiner
- From the Department of Neuroradiology (S.W., M.S., J.H., F.H., C.N.-K., T.K., G.A.H., M.P., M.S.)
| | - M Strinitz
- From the Department of Neuroradiology (S.W., M.S., J.H., F.H., C.N.-K., T.K., G.A.H., M.P., M.S.)
| | - J Herfurth
- From the Department of Neuroradiology (S.W., M.S., J.H., F.H., C.N.-K., T.K., G.A.H., M.P., M.S.)
| | - F Hessenauer
- From the Department of Neuroradiology (S.W., M.S., J.H., F.H., C.N.-K., T.K., G.A.H., M.P., M.S.)
| | - C Nauroth-Kreß
- From the Department of Neuroradiology (S.W., M.S., J.H., F.H., C.N.-K., T.K., G.A.H., M.P., M.S.)
| | - T Kampf
- From the Department of Neuroradiology (S.W., M.S., J.H., F.H., C.N.-K., T.K., G.A.H., M.P., M.S.)
| | - G A Homola
- From the Department of Neuroradiology (S.W., M.S., J.H., F.H., C.N.-K., T.K., G.A.H., M.P., M.S.)
| | - N Üçeyler
- Neurology (N.U., C.S.), University Hospital Würzburg, Würzburg, Germany
| | - C Sommer
- Neurology (N.U., C.S.), University Hospital Würzburg, Würzburg, Germany
| | - M Pham
- From the Department of Neuroradiology (S.W., M.S., J.H., F.H., C.N.-K., T.K., G.A.H., M.P., M.S.)
| | - M Schindehütte
- From the Department of Neuroradiology (S.W., M.S., J.H., F.H., C.N.-K., T.K., G.A.H., M.P., M.S.)
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Dorsal Root Ganglion Morphometric Changes Under Oxaliplatin Treatment : Longitudinal Assessment by Computed Tomography. Clin Neuroradiol 2021; 32:547-556. [PMID: 34499182 PMCID: PMC9187544 DOI: 10.1007/s00062-021-01083-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 08/02/2021] [Indexed: 11/25/2022]
Abstract
Purpose Magnetic resonance neurography (MRN) can detect dorsal root ganglia (DRG) hypertrophy in patients with oxaliplatin-induced peripheral neuropathy (OXIPN) but is difficult to apply in clinical daily practice. Aims of this study were (i) to assess whether DRG volume is reliably measurable by routine computed tomography (CT) scans, (ii) to measure longitudinal changes in DRG during and after oxaliplatin administration and (iii) to assess correlation between DRG morphometry and individual oxaliplatin dose. Methods For comparison of MRN and CT measurements, CT scans of 18 patients from a previous MRN study were analyzed. For longitudinal assessment of DRG size under treatment, 96 patients treated with oxaliplatin between January and December 2014 were enrolled retrospectively. DRG volumetry was performed by analyzing routine CT scans, starting with the last scan before oxaliplatin exposure (t0) and up to four consecutive timepoints after initiation of oxaliplatin therapy (t1–t4) with the following median and ranges in months: 3.1 (0.4–4.9), 6.2 (5.3–7.8), 10.4 (8.2–11.9), and 18.4 (12.8–49.8). Results DRG volume measured in CT showed a moderately strong correlation with MRN (r = 0.51, p < 0.001) and a strong correlation between two consecutive CTs (r = 0.77, p < 0.001). DRG volume increased after oxaliplatin administration with a maximum at timepoint t2. Higher cumulative oxaliplatin exposure was associated with significantly higher absolute DRG volumes (p = 0.005). Treatment discontinuation was associated with a nonsignificant trend towards lower relative DRG volume changes (p = 0.08). Conclusion CT is a reliable method for continuous DRG morphometry; however, since no standardized assessment of OXIPN was performed in this retrospective study, correlations between DRG size, cumulative oxaliplatin dose and clinical symptoms in future prospective studies are needed to establish DRG size as a potential OXIPN biomarker. Supplementary Information The online version of this article (10.1007/s00062-021-01083-5) contains supplementary material, which is available to authorized users.
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18
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Gemignani F, Bellanova MF, Saccani E, Pavesi G. Non-length-dependent small fiber neuropathy: Not a matter of stockings and gloves. Muscle Nerve 2021; 65:10-28. [PMID: 34374103 DOI: 10.1002/mus.27379] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 07/11/2021] [Accepted: 07/18/2021] [Indexed: 12/17/2022]
Abstract
The clinical spectrum of small fiber neuropathy (SFN) encompasses manifestations related to the involvement of thinly myelinated A-delta and unmyelinated C fibers, including not only the classical distal phenotype, but also a non-length-dependent (NLD) presentation that can be patchy, asymmetrical, upper limb-predominant, or diffuse. This narrative review is focused on NLD-SFN. The diagnosis of NLD-SFN can be problematic, due to its varied and often atypical presentation, and diagnostic criteria developed for distal SFN are not suitable for NLD-SFN. The topographic pattern of NLD-SFN is likely related to ganglionopathy restricted to the small neurons of dorsal root ganglia. It is often associated with systemic diseases, but about half the time is idiopathic. In comparison with distal SFN, immune-mediated diseases are more common than dysmetabolic conditions. Treatment is usually based on the management of neuropathic pain. Disease-modifying therapy, including immunotherapy, may be effective in patients with identified causes. Future research on NLD-SFN is expected to further clarify the interconnected aspects of phenotypic characterization, diagnostic criteria, and pathophysiology.
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Affiliation(s)
- Franco Gemignani
- Neurology Unit, Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Maria F Bellanova
- Laboratory of Neuromuscular Histopathology, Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Elena Saccani
- Neurology Unit, Department of Specialized Medicine, University Hospital of Parma, Parma, Italy
| | - Giovanni Pavesi
- Neurology Unit, Department of Medicine and Surgery, University of Parma, Parma, Italy
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Waltz TB, Burand AJ, Sadler KE, Stucky CL. Sensory-specific peripheral nerve pathology in a rat model of Fabry disease. NEUROBIOLOGY OF PAIN (CAMBRIDGE, MASS.) 2021; 10:100074. [PMID: 34541380 PMCID: PMC8437817 DOI: 10.1016/j.ynpai.2021.100074] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 08/26/2021] [Accepted: 08/29/2021] [Indexed: 05/27/2023]
Abstract
Fabry disease (FD) causes life-long pain, the mechanisms of which are unclear. Patients with FD have chronic pain that mirrors symptoms of other painful peripheral neuropathies. However, it is unclear what underlying damage occurs in FD peripheral nerves that may contribute to chronic pain. Here, we characterized myelinated and unmyelinated fiber pathology in peripheral nerves of a rat model of FD. Decreased nerve fiber density and increased nerve fiber pathology were noted in unmyelinated and myelinated fibers from FD rats; both observations were dependent on sampled nerve fiber modality and anatomical location. FD myelinated axons exhibited lipid accumulations that were determined to be the FD-associated lipid globotriaosylceramide (Gb3), and to a lesser extent lysosomes. These findings suggest that axonal Gb3 accumulation may drive peripheral neuron dysfunction and subsequent pain in FD.
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20
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Wang H, Li K, Wang Q, Liu X, Zhao X, Zhong Z, Gu C, Li R. Magnetic Resonance Neurography for Evaluation of Dorsal Root Ganglion Morphology. World Neurosurg 2021; 154:e54-e60. [PMID: 34224889 DOI: 10.1016/j.wneu.2021.06.123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 06/23/2021] [Accepted: 06/24/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND In this study, the morphologic characteristics and anatomic position of the dorsal root ganglion (DRG) were measured and analyzed in healthy people using magnetic resonance neurography (MRN), which provided an anatomical reference for minimally invasive spinal surgery. METHODS From January 2018 to December 2019, 20 healthy adult volunteers (10 male and 10 female volunteers between 20 and 65 years old) were scanned and imaged by 3.0 T magnetic resonance imaging combined with neuroimaging technology. Here, the position of the DRG was located, and the shape and size of the DRG, as well as its distance to the upper pedicle, were measured. RESULTS All volunteers provided satisfactory MRN scans of the L1-S1 lumbar DRG. According to the spatial position of the DRG, the morphology of the DRG can be divided into the intervertebral foramen type (81.01%), intraspinal type (16.01%), extraforaminal type (0.8%), and mixed type (2.0%). CONCLUSIONS The intervertebral foramen type and Intraspinal type were observed to be the main distribution forms of lumbar DRG. Due to the downward movement of lumbar segments, the position of the DRG was noted to gradually move to the spinal canal while its volume gradually increased. In addition, the distance from the upper pedicle was found to decrease gradually. MRN imaging can clearly show the shape, location, and adjacent relationship of the DRG, providing effective imaging guidance for the minimally invasive lumbar techniques.
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Affiliation(s)
- Hongwei Wang
- Department of Spine Surgery, Dongguan Tungwah Hospital, Dongguan, China.
| | - Kaixiang Li
- Department of Spine Surgery, Dongguan Tungwah Hospital, Dongguan, China
| | - Qingyun Wang
- Department of Radiology, Dongguan Tungwah Hospital, Dongguan, China
| | - Xiaoqiang Liu
- Department of Spine Surgery, Dongguan Tungwah Hospital, Dongguan, China
| | - Xiangjun Zhao
- Department of Spine Surgery, Dongguan Tungwah Hospital, Dongguan, China
| | - Zhanghua Zhong
- Department of Spine Surgery, Dongguan Tungwah Hospital, Dongguan, China
| | - Changwei Gu
- Department of Spine Surgery, Dongguan Tungwah Hospital, Dongguan, China
| | - Ruibing Li
- Department of Spine Surgery, Dongguan Tungwah Hospital, Dongguan, China
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21
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Burand AJ, Stucky CL. Fabry disease pain: patient and preclinical parallels. Pain 2021; 162:1305-1321. [PMID: 33259456 PMCID: PMC8054551 DOI: 10.1097/j.pain.0000000000002152] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 10/31/2020] [Accepted: 11/18/2020] [Indexed: 02/07/2023]
Abstract
ABSTRACT Severe neuropathic pain is a hallmark of Fabry disease, a genetic disorder caused by a deficiency in lysosomal α-galactosidase A. Pain experienced by these patients significantly impacts their quality of life and ability to perform everyday tasks. Patients with Fabry disease suffer from peripheral neuropathy, sensory abnormalities, acute pain crises, and lifelong ongoing pain. Although treatment of pain through medication and enzyme replacement therapy exists, pain persists in many of these patients. Some has been learned in the past decades regarding clinical manifestations of pain in Fabry disease and the pathological effects of α-galactosidase A insufficiency in neurons. Still, it is unclear how pain and sensory abnormalities arise in patients with Fabry disease and how these can be targeted with therapeutics. Our knowledge is limited in part due to the lack of adequate preclinical models to study the disease. This review will detail the types of pain, sensory abnormalities, influence of demographics on pain, and current strategies to treat pain experienced by patients with Fabry disease. In addition, we discuss the current knowledge of Fabry pain pathogenesis and which aspects of the disease preclinical models accurately recapitulate. Understanding the commonalities and divergences between humans and preclinical models can be used to further interrogate mechanisms causing the pain and sensory abnormalities as well as advance development of the next generation of therapeutics to treat pain in patients with Fabry disease.
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Affiliation(s)
- Anthony J. Burand
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, United States
| | - Cheryl L. Stucky
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, United States
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22
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von Cossel K, Muschol N, Friedrich RE, Glatzel M, Ammer L, Lohmöller B, Bendszus M, Mautner VF, Godel T. Assessment of small fiber neuropathy in patients carrying the non-classical Fabry variant p.D313Y. Muscle Nerve 2021; 63:745-750. [PMID: 33543778 DOI: 10.1002/mus.27196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 02/02/2021] [Accepted: 02/02/2021] [Indexed: 01/23/2023]
Abstract
INTRODUCTION The pathophysiological significance of the Fabry-related, non-classical variant p.D313Y still remains to be solved. This study assesses the involvement of the peripheral nervous system with respect to small fiber neuropathy and neuropathic pain in female patients carrying p.D313Y. METHODS This study examined nine females carrying the Fabry-related p.D313Y variant by obtaining skin punch biopsies above the right lateral malleolus. Intraepidermal nerve fiber density was determined for each patient and compared to reference values matched for the patient's decade of life and sex. Moreover, each patient was characterized by a detailed neurological examination and by pain assessment via questionnaire. RESULTS Compared to sex-matched lower fifth percentile reference values per decade, intraepidermal nerve fiber density was decreased in seven out of nine patients. Four patients reported acral paresthesias and neuropathic pain with an average visual analogue scale score of 7 out of 10 points. Two patients experienced acute pain crises. Six out of seven patients diagnosed with small fiber neuropathy had a their medical history of hypo- and/or hyperhidrosis. DISCUSSION The diagnosis of small fiber neuropathy was made in seven out of nine females carrying the non-classical variant p.D313Y. Moreover, neuropathic pain and symptoms indicative of autonomic nervous system dysfunction seem to be common findings that may be of clinical significance and may warrant therapeutic intervention.
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Affiliation(s)
- Katharina von Cossel
- Department of Pediatrics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Nicole Muschol
- Department of Pediatrics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Reinhard E Friedrich
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Markus Glatzel
- Institute of Neuropathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Luise Ammer
- Department of Pediatrics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Benjamin Lohmöller
- Department of Pediatrics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Martin Bendszus
- Department of Neuroradiology, Neurological University Clinic, Heidelberg University Hospital, Heidelberg, Germany
| | - Victor-Felix Mautner
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Tim Godel
- Department of Neuroradiology, Neurological University Clinic, Heidelberg University Hospital, Heidelberg, Germany
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Godel T, von Cossel K, Friedrich RE, Glatzel M, Canaan-Kühl S, Duning T, Kronlage M, Heiland S, Bendszus M, Muschol N, Mautner VF. Assessment of Peripheral Nervous System Alterations in Patients with the Fabry Related GLA-Variant p.A143T. Diagnostics (Basel) 2020; 10:diagnostics10121027. [PMID: 33266233 PMCID: PMC7760340 DOI: 10.3390/diagnostics10121027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 11/23/2020] [Accepted: 11/28/2020] [Indexed: 11/16/2022] Open
Abstract
The purpose of this study is to examine alterations of the peripheral nervous system (PNS) in oligo-symptomatic patients carrying the Fabry related GLA-gene variant p.A143T by Magnetic Resonance Neurography (MRN) and skin biopsy. This prospective study assessed dorsal root ganglia (DRG) volume L3 to S2, vascular permeability of the DRG L5, S1, and the spinal nerve L5 in five patients carrying p.A143T in comparison to patients with classical Fabry mutations and healthy controls. Moreover, skin punch biopsies above the lateral malleolus of the right foot were obtained in four patients and intraepidermal nerve fiber density (IENFD) was counted individually. Compared to controls, DRG volumes of p.A143T patients were enlarged by 30% (L3, p < 0.05), 35% (L4, p < 0.05), 29% (L5, p = 0.15), 36% (S1, p < 0.01), and 18% (S2, p < 0.05), but less pronounced compared to patients carrying a classical Fabry mutation. Compared to healthy controls, vascular permeability was decreased by 40% (L5 right), 49% (L5 left), 48% (S1 right), and 49% (S1) (p < 0.01–p < 0.001), but non-significant less than patients carrying a classical Fabry mutation. Compared to sex-matched 5% lower normative reference values per decade, IENFD was decreased in three of four patients. MRN and determination of IENFD is able to detect early alteration of the PNS segment in oligo-symptomatic patients with the disease-modifying GLA-variant p.A143T on an individual basis. This procedure might also help in further GLA-variants of uncertain significance for early identification of patients with single major organ manifestation.
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Affiliation(s)
- Tim Godel
- Department of Neuroradiology, Neurological University Clinic, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany; (M.K.); (S.H.); (M.B.)
- Correspondence: ; Tel.: +49-6221-5634791
| | - Katharina von Cossel
- Department of Pediatrics, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany; (K.v.C.); (N.M.)
| | - Reinhard E. Friedrich
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany;
| | - Markus Glatzel
- Institute of Neuropathology, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany;
| | - Sima Canaan-Kühl
- Division of Nephrology and Intensive Care Medicine, CCM, Charité Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany;
| | - Thomas Duning
- Department of Neurology, University Hospital of Münster, Albert-Schweitzer-Campus 1, 48149 Münster, Germany;
| | - Moritz Kronlage
- Department of Neuroradiology, Neurological University Clinic, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany; (M.K.); (S.H.); (M.B.)
| | - Sabine Heiland
- Department of Neuroradiology, Neurological University Clinic, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany; (M.K.); (S.H.); (M.B.)
| | - Martin Bendszus
- Department of Neuroradiology, Neurological University Clinic, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany; (M.K.); (S.H.); (M.B.)
| | - Nicole Muschol
- Department of Pediatrics, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany; (K.v.C.); (N.M.)
| | - Victor-Felix Mautner
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany;
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Jabbarzadeh-Tabrizi S, Boutin M, Day TS, Taroua M, Schiffmann R, Auray-Blais C, Shen JS. Assessing the role of glycosphingolipids in the phenotype severity of Fabry disease mouse model. J Lipid Res 2020; 61:1410-1423. [PMID: 32868283 DOI: 10.1194/jlr.ra120000909] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Fabry disease is caused by deficient activity of α-galactosidase A, an enzyme that hydrolyzes the terminal α-galactosyl moieties from glycolipids and glycoproteins, and subsequent accumulation of glycosphingolipids, mainly globotriaosylceramide (Gb3), globotriaosylsphingosine (lyso-Gb3), and galabiosylceramide. However, there is no known link between these compounds and disease severity. In this study, we compared Gb3 isoforms (various fatty acids) and lyso-Gb3 analogs (various sphingosine modifications) in two strains of Fabry disease mouse models: a pure C57BL/6 (B6) background or a B6/129 mixed background, with the latter exhibiting more prominent cardiac and renal hypertrophy and thermosensation deficits. Total Gb3 and lyso-Gb3 levels in the heart, kidney, and dorsal root ganglion (DRG) were similar in the two strains. However, levels of the C20-fatty acid isoform of Gb3 and particular lyso-Gb3 analogs (+18, +34) were significantly higher in Fabry-B6/129 heart tissue when compared with Fabry-B6. By contrast, there was no difference in Gb3 and lyso-Gb3 isoforms/analogs in the kidneys and DRG between the two strains. Furthermore, using immunohistochemistry, we found that Gb3 massively accumulated in DRG mechanoreceptors, a sensory neuron subpopulation with preserved function in Fabry disease. However, Gb3 accumulation was not observed in nonpeptidergic nociceptors, the disease-relevant subpopulation that has remarkably increased isolectin-B4 (the marker of nonpeptidergic nociceptors) binding and enlarged cell size. These findings suggest that specific species of Gb3 or lyso-Gb3 may play major roles in the pathogenesis of Fabry disease, and that Gb3 and lyso-Gb3 are not responsible for the pathology in all tissues or cell types.
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Affiliation(s)
| | - Michel Boutin
- Division of Medical Genetics, Department of Pediatrics, Centre de Recherche-CHUS, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Taniqua S Day
- Institute of Metabolic Disease, Baylor Scott & White Research Institute, Dallas, TX, USA
| | - Mouna Taroua
- Institute of Metabolic Disease, Baylor Scott & White Research Institute, Dallas, TX, USA
| | - Raphael Schiffmann
- Institute of Metabolic Disease, Baylor Scott & White Research Institute, Dallas, TX, USA
| | - Christiane Auray-Blais
- Division of Medical Genetics, Department of Pediatrics, Centre de Recherche-CHUS, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Jin-Song Shen
- Institute of Metabolic Disease, Baylor Scott & White Research Institute, Dallas, TX, USA
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25
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Forstenpointner J, Sendel M, Moeller P, Reimer M, Canaan-Kühl S, Gaedeke J, Rehm S, Hüllemann P, Gierthmühlen J, Baron R. Bridging the Gap Between Vessels and Nerves in Fabry Disease. Front Neurosci 2020; 14:448. [PMID: 32612493 PMCID: PMC7308469 DOI: 10.3389/fnins.2020.00448] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 04/14/2020] [Indexed: 02/01/2023] Open
Abstract
Purpose Fabry disease frequently includes pain as an early disease feature, which was characterized as a dysfunctional processing of somatosensory information in various studies. The pathomechanism involves the mutation in the x-chromosomal GLA-gene and a consequent reduction of the α-galactosidase. This results in an insufficient reduction of globotriaosylceramide (GL3). Interestingly, an accumulation of GL3 was shown in both vascular endothelial cells and nerve tissue. This implicates that both an endothelial and nerve-dependent dysfunction may be considered as prominent mechanisms in pain pathogeneses. Patients and Methods The exploration of endothelial and C-fiber-dependent microcirculatory changes was conducted in a healthy cohort (n = 22) and in patients with polyneuropathy (n = 21) and Fabry disease (n = 15). Microcirculatory measurements were conducted using a laser speckle contrast analysis (LASCA) in combination with a thermoprobe controlling system, which applied a constant heat stimulus (42°C). Additionally, nerve fiber function was assessed via Quantitative Sensory Testing and heart rate variability (HRV). Results The results indicated a characteristic perfusion profile in the control group as well as both patient groups. Fabry patients had the smallest increase of endothelial-dependent perfusion as compared to the others [% increase as compared to Fabry: control + 129% (p = 0.002), PNP + 126% (p = 0.019)]. The sensory testing indicated a dysfunctional processing of A-delta fibers in Fabry disease as compared to healthy controls [cold detection threshold (CDT): p = 0.004, mechanical pain threshold (MPT): p = 0.007] and PNP patients (MPT: p = 0.001). Conclusion Our results point to both an endothelial and a nerve-dependent dysfunction in Fabry disease. Therefore, not only direct changes in nerve fiber tissue may contribute to an altered sensory processing. Indeed, evidence of a perfusion change in vasa nervorum could also contribute to the dysfunctional processing of sensory information, which likely occurs under physical stress.
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Affiliation(s)
- Julia Forstenpointner
- Division of Neurological Pain Research and Therapy, Department of Neurology, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Manon Sendel
- Division of Neurological Pain Research and Therapy, Department of Neurology, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Paul Moeller
- Division of Neurological Pain Research and Therapy, Department of Neurology, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Maren Reimer
- Division of Neurological Pain Research and Therapy, Department of Neurology, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Sima Canaan-Kühl
- Department of Medicine, Division of Nephrology, Charité, Berlin, Germany
| | - Jens Gaedeke
- Department of Medicine, Division of Nephrology, Charité, Berlin, Germany
| | - Stefanie Rehm
- Division of Neurological Pain Research and Therapy, Department of Neurology, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Philipp Hüllemann
- Division of Neurological Pain Research and Therapy, Department of Neurology, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Janne Gierthmühlen
- Division of Neurological Pain Research and Therapy, Department of Neurology, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Ralf Baron
- Division of Neurological Pain Research and Therapy, Department of Neurology, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
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26
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Sollmann N, Cervantes B, Klupp E, Weidlich D, Makowski MR, Kirschke JS, Hu HH, Karampinos DC. Magnetic resonance neurography of the lumbosacral plexus at 3 Tesla - CSF-suppressed imaging with submillimeter resolution by a three-dimensional turbo spin echo sequence. Magn Reson Imaging 2020; 71:132-139. [PMID: 32553857 DOI: 10.1016/j.mri.2020.06.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 06/10/2020] [Accepted: 06/11/2020] [Indexed: 12/27/2022]
Abstract
PURPOSE To investigate magnetic resonance neurography (MRN) of the lumbosacral plexus (LSP) with cerebrospinal fluid (CSF) suppression by using submillimeter resolution for three-dimensional (3D) turbo spin echo (TSE) imaging. MATERIALS AND METHODS Using extended phase graph (EPG) analysis, the signal response of CSF was simulated considering dephasing from coherent motion for frequency-encoding voxel sizes ranging from 0.3 to 1.3 mm and for CSF velocities ranging from 0 to 4 cm/s. In-vivo MRN included 3D TSE data with frequency encoding parallel to the feet/head axis from 15 healthy adults (mean age: 28.5 ± 3.8 years, 5 females; acquisition voxel size: 2 × 2 × 2 mm3) and 16 pediatric patients (mean age: 6.7 ± 4.1 years, 7 females; acquisition voxel size: 0.7 × 0.7 × 1.4 mm3) acquired at 3 Tesla. Five of the adults were scanned repetitively with changing acquisition voxel sizes (1 × 2 × 2 mm3, 0.7 × 2× 2 mm3, and 0.5 × 2 × 2 mm3). Measurements of the bilateral ganglion of the L5 nerve root, averaged between sides, as well as the CSF in the thecal sac were obtained for all included subjects and compared between adults and pediatric patients and between voxel sizes, using a CSF-to-nerve signal ratio (CSFNR). RESULTS According to simulations, the CSF signal is reduced along the echo train for moving spins. Specifically, it can be reduced by over 90% compared to the maximum simulated signal for flow velocities above 2 cm/s, and could be most effectively suppressed by considering a frequency-encoding voxel size of 0.8 mm or less. For in-vivo measurements, mean CSFNR was 1.52 ± 0.22 for adults and 0.10 ± 0.03 for pediatric patients (p < .0001). Differences in CSFNR were significant between measurements using a voxel size of 2 × 2 × 2 mm3 and measurements in data with reduced voxel sizes (p ≤ .0012), with submillimeter resolution (particularly 0.5 × 2 × 2 mm3) providing highest CSF suppression. CONCLUSIONS Applying frequency-encoding voxel sizes in submillimeter range for 3D TSE imaging with frequency encoding parallel to the feet/head axis may considerably improve MRN of LSP pathology in adults in the future because of favorable CSF suppression.
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Affiliation(s)
- Nico Sollmann
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany; TUM-Neuroimaging Center, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
| | - Barbara Cervantes
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Elisabeth Klupp
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
| | - Dominik Weidlich
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
| | - Marcus R Makowski
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
| | - Jan S Kirschke
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany; TUM-Neuroimaging Center, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
| | - Houchun H Hu
- Department of Medical Imaging and Radiology, Phoenix Children's Hospital, Phoenix, AZ, USA; Hyperfine Research, Guilford, CT, USA
| | - Dimitrios C Karampinos
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
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27
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Sollmann N, Weidlich D, Klupp E, Cervantes B, Ganter C, Zimmer C, Rummeny EJ, Baum T, Kirschke JS, Karampinos DC. T2 mapping of the distal sciatic nerve in healthy subjects and patients suffering from lumbar disc herniation with nerve compression. MAGNETIC RESONANCE MATERIALS IN PHYSICS BIOLOGY AND MEDICINE 2020; 33:713-724. [PMID: 32048099 PMCID: PMC7502059 DOI: 10.1007/s10334-020-00832-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 12/22/2019] [Accepted: 01/28/2020] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To measure T2 values for magnetic resonance neurography (MRN) of the healthy distal sciatic nerve and compare those to T2 changes in patients with nerve compression. MATERIALS AND METHODS Twenty-one healthy subjects and five patients with sciatica due to disc herniation underwent MRN using a T2-prepared turbo spin echo (TSE) sequence of the distal sciatic nerve bilaterally. Six and one of those healthy subjects further underwent a commonly used multi-echo spin-echo (MESE) sequence and magnetic resonance spectroscopy (MRS), respectively. RESULTS T2 values derived from the T2-prepared TSE sequence were 44.6 ± 3.0 ms (left) and 44.5 ± 2.6 ms (right) in healthy subjects and showed good inter-reader reliability. In patients, T2 values of 61.5 ± 6.2 ms (affected side) versus 43.3 ± 2.4 ms (unaffected side) were obtained. T2 values of MRS were in good agreement with measurements from the T2-prepared TSE, but not with those of the MESE sequence. DISCUSSION A T2-prepared TSE sequence enables precise determination of T2 values of the distal sciatic nerve in agreement with MRS. A MESE sequence tends to overestimate nerve T2 compared to T2 from MRS due to the influence of residual fat on T2 quantification. Our approach may enable to quantitatively assess direct nerve affection related to nerve compression.
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Affiliation(s)
- Nico Sollmann
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany. .,TUM-Neuroimaging Center, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
| | - Dominik Weidlich
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Elisabeth Klupp
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Barbara Cervantes
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Carl Ganter
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Claus Zimmer
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.,TUM-Neuroimaging Center, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Ernst J Rummeny
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Thomas Baum
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Jan S Kirschke
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.,TUM-Neuroimaging Center, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Dimitrios C Karampinos
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
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Reinhold AK, Rittner HL. Characteristics of the nerve barrier and the blood dorsal root ganglion barrier in health and disease. Exp Neurol 2020; 327:113244. [PMID: 32057794 DOI: 10.1016/j.expneurol.2020.113244] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 01/17/2020] [Accepted: 02/09/2020] [Indexed: 12/14/2022]
Abstract
A variety of barriers ensures the protection of the peripheral nervous system from noxious blood-borne or surrounding stimuli. In this review, anatomy and functioning of the blood nerve barrier (BNB) and the blood DRG barrier (BDB) will be presented and key tight junction proteins described: ZO-1, claudin-1, -3, -5, -11, -12, -19, occludin, and tricellulin. Different diseases can lead to or be accompanied by nerve barrier disruption; impairment of nerve barriers in turn worsens pathology. Peripheral nerve injury, diabetic neuropathy and inflammatory polyneuropathy cause an increased permeability of BNB and BDB. Knowledge and understanding of these mechanisms might ultimately lead to the invention of drugs to control barrier function and help ameliorating neurological diseases.
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Affiliation(s)
- A K Reinhold
- Dept Anesthesiology, Center for Interdisciplinary Pain Medicine, University Hospitals Wuerzburg, Germany
| | - H L Rittner
- Dept Anesthesiology, Center for Interdisciplinary Pain Medicine, University Hospitals Wuerzburg, Germany.
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29
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Regional Differences in Tight Junction Protein Expression in the Blood-DRG Barrier and Their Alterations after Nerve Traumatic Injury in Rats. Int J Mol Sci 2019; 21:ijms21010270. [PMID: 31906086 PMCID: PMC6981987 DOI: 10.3390/ijms21010270] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 12/23/2019] [Accepted: 12/28/2019] [Indexed: 12/15/2022] Open
Abstract
The nervous system is shielded by special barriers. Nerve injury results in blood–nerve barrier breakdown with downregulation of certain tight junction proteins accompanying the painful neuropathic phenotype. The dorsal root ganglion (DRG) consists of a neuron-rich region (NRR, somata of somatosensory and nociceptive neurons) and a fibre-rich region (FRR), and their putative epi-/perineurium (EPN). Here, we analysed blood–DRG barrier (BDB) properties in these physiologically distinct regions in Wistar rats after chronic constriction injury (CCI). Cldn5, Cldn12, and Tjp1 (rats) mRNA were downregulated 1 week after traumatic nerve injury. Claudin-1 immunoreactivity (IR) found in the EPN, claudin-19-IR in the FRR, and ZO-1-IR in FRR-EPN were unaltered after CCI. However, laser-assisted, vessel specific qPCR, and IR studies confirmed a significant loss of claudin-5 in the NRR. The NRR was three-times more permeable compared to the FRR for high and low molecular weight markers. NRR permeability was not further increased 1-week after CCI, but significantly more CD68+ macrophages had migrated into the NRR. In summary, NRR and FRR are different in naïve rats. Short-term traumatic nerve injury leaves the already highly permeable BDB in the NRR unaltered for small and large molecules. Claudin-5 is downregulated in the NRR. This could facilitate macrophage invasion, and thereby neuronal sensitisation and hyperalgesia. Targeting the stabilisation of claudin-5 in microvessels and the BDB barrier could be a future approach for neuropathic pain therapy.
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MR Neurography: Normative Values in Correlation to Demographic Determinants in Children and Adolescents. Clin Neuroradiol 2019; 30:671-677. [DOI: 10.1007/s00062-019-00834-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Accepted: 08/19/2019] [Indexed: 01/30/2023]
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31
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Kollmer J, Hilgenfeld T, Ziegler A, Saffari A, Sam G, Hayes JM, Pietsch A, Jost M, Heiland S, Bendszus M, Wick W, Weiler M. Quantitative MR neurography biomarkers in 5q-linked spinal muscular atrophy. Neurology 2019; 93:e653-e664. [PMID: 31292223 DOI: 10.1212/wnl.0000000000007945] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Accepted: 03/21/2019] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE To characterize and quantify peripheral nerve lesions and muscle degeneration in clinically, genetically, and electrophysiologically well-classified, nonpediatric patients with 5q-linked spinal muscular atrophy (SMA) by high-resolution magnetic resonance neurography (MRN). METHODS Thirty-one adult patients with genetically confirmed 5q-linked SMA types II, IIIa, and IIIb and 31 age- and sex-matched healthy volunteers were prospectively investigated. All patients received neurologic, physiotherapeutic, and electrophysiologic assessments. MRN at 3.0T with anatomic coverage from the lumbosacral plexus and proximal thigh down to the tibiotalar joint was performed with dual-echo 2D relaxometry sequences with spectral fat saturation and a 3D T2-weighted inversion recovery sequence. Detailed quantification of nerve injury by morphometric and microstructural MRN markers and qualitative classification of fatty muscle degeneration were conducted. RESULTS Established clinical scores and compound muscle action potentials discriminated well between the 3 SMA types. MRN revealed that peroneal and tibial nerve cross-sectional area (CSA) at the thigh and lower leg level as well as spinal nerve CSA were markedly decreased throughout all 3 groups, indicating severe generalized peripheral nerve atrophy. While peroneal and tibial nerve T2 relaxation time was distinctly increased at all analyzed anatomic regions, the proton spin density was clearly decreased. Marked differences in fatty muscle degeneration were found between the 3 groups and for all analyzed compartments. CONCLUSIONS MRN detects and quantifies peripheral nerve involvement in SMA types II, IIIa, and IIIb with high sensitivity in vivo. Quantitative MRN parameters (T2 relaxation time, proton spin density, CSA) might serve as novel imaging biomarkers in SMA to indicate early microstructural nerve tissue changes in response to treatment.
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Affiliation(s)
- Jennifer Kollmer
- From the Department of Neuroradiology (J.K., T.H., A.P., M.J., S.H., M.B.), Division of Child Neurology and Metabolic Medicine (A.Z., A.S.), Center for Child and Adolescent Medicine, Department of Neurology (G.S., W.W., M.W.), and Department of Neuroradiology (S.H.), Division of Experimental Radiology, Heidelberg University Hospital, Germany; Department of Neurology (J.M.H.), University of Michigan, Ann Arbor; Medical Faculty (M.J.), University of Tübingen; and German Cancer Consortium (DKTK) within the German Cancer Research Center (DKFZ) (W.W.), Heidelberg, Germany.
| | - Tim Hilgenfeld
- From the Department of Neuroradiology (J.K., T.H., A.P., M.J., S.H., M.B.), Division of Child Neurology and Metabolic Medicine (A.Z., A.S.), Center for Child and Adolescent Medicine, Department of Neurology (G.S., W.W., M.W.), and Department of Neuroradiology (S.H.), Division of Experimental Radiology, Heidelberg University Hospital, Germany; Department of Neurology (J.M.H.), University of Michigan, Ann Arbor; Medical Faculty (M.J.), University of Tübingen; and German Cancer Consortium (DKTK) within the German Cancer Research Center (DKFZ) (W.W.), Heidelberg, Germany
| | - Andreas Ziegler
- From the Department of Neuroradiology (J.K., T.H., A.P., M.J., S.H., M.B.), Division of Child Neurology and Metabolic Medicine (A.Z., A.S.), Center for Child and Adolescent Medicine, Department of Neurology (G.S., W.W., M.W.), and Department of Neuroradiology (S.H.), Division of Experimental Radiology, Heidelberg University Hospital, Germany; Department of Neurology (J.M.H.), University of Michigan, Ann Arbor; Medical Faculty (M.J.), University of Tübingen; and German Cancer Consortium (DKTK) within the German Cancer Research Center (DKFZ) (W.W.), Heidelberg, Germany
| | - Afshin Saffari
- From the Department of Neuroradiology (J.K., T.H., A.P., M.J., S.H., M.B.), Division of Child Neurology and Metabolic Medicine (A.Z., A.S.), Center for Child and Adolescent Medicine, Department of Neurology (G.S., W.W., M.W.), and Department of Neuroradiology (S.H.), Division of Experimental Radiology, Heidelberg University Hospital, Germany; Department of Neurology (J.M.H.), University of Michigan, Ann Arbor; Medical Faculty (M.J.), University of Tübingen; and German Cancer Consortium (DKTK) within the German Cancer Research Center (DKFZ) (W.W.), Heidelberg, Germany
| | - Georges Sam
- From the Department of Neuroradiology (J.K., T.H., A.P., M.J., S.H., M.B.), Division of Child Neurology and Metabolic Medicine (A.Z., A.S.), Center for Child and Adolescent Medicine, Department of Neurology (G.S., W.W., M.W.), and Department of Neuroradiology (S.H.), Division of Experimental Radiology, Heidelberg University Hospital, Germany; Department of Neurology (J.M.H.), University of Michigan, Ann Arbor; Medical Faculty (M.J.), University of Tübingen; and German Cancer Consortium (DKTK) within the German Cancer Research Center (DKFZ) (W.W.), Heidelberg, Germany
| | - John M Hayes
- From the Department of Neuroradiology (J.K., T.H., A.P., M.J., S.H., M.B.), Division of Child Neurology and Metabolic Medicine (A.Z., A.S.), Center for Child and Adolescent Medicine, Department of Neurology (G.S., W.W., M.W.), and Department of Neuroradiology (S.H.), Division of Experimental Radiology, Heidelberg University Hospital, Germany; Department of Neurology (J.M.H.), University of Michigan, Ann Arbor; Medical Faculty (M.J.), University of Tübingen; and German Cancer Consortium (DKTK) within the German Cancer Research Center (DKFZ) (W.W.), Heidelberg, Germany
| | - Adriana Pietsch
- From the Department of Neuroradiology (J.K., T.H., A.P., M.J., S.H., M.B.), Division of Child Neurology and Metabolic Medicine (A.Z., A.S.), Center for Child and Adolescent Medicine, Department of Neurology (G.S., W.W., M.W.), and Department of Neuroradiology (S.H.), Division of Experimental Radiology, Heidelberg University Hospital, Germany; Department of Neurology (J.M.H.), University of Michigan, Ann Arbor; Medical Faculty (M.J.), University of Tübingen; and German Cancer Consortium (DKTK) within the German Cancer Research Center (DKFZ) (W.W.), Heidelberg, Germany
| | - Marie Jost
- From the Department of Neuroradiology (J.K., T.H., A.P., M.J., S.H., M.B.), Division of Child Neurology and Metabolic Medicine (A.Z., A.S.), Center for Child and Adolescent Medicine, Department of Neurology (G.S., W.W., M.W.), and Department of Neuroradiology (S.H.), Division of Experimental Radiology, Heidelberg University Hospital, Germany; Department of Neurology (J.M.H.), University of Michigan, Ann Arbor; Medical Faculty (M.J.), University of Tübingen; and German Cancer Consortium (DKTK) within the German Cancer Research Center (DKFZ) (W.W.), Heidelberg, Germany
| | - Sabine Heiland
- From the Department of Neuroradiology (J.K., T.H., A.P., M.J., S.H., M.B.), Division of Child Neurology and Metabolic Medicine (A.Z., A.S.), Center for Child and Adolescent Medicine, Department of Neurology (G.S., W.W., M.W.), and Department of Neuroradiology (S.H.), Division of Experimental Radiology, Heidelberg University Hospital, Germany; Department of Neurology (J.M.H.), University of Michigan, Ann Arbor; Medical Faculty (M.J.), University of Tübingen; and German Cancer Consortium (DKTK) within the German Cancer Research Center (DKFZ) (W.W.), Heidelberg, Germany
| | - Martin Bendszus
- From the Department of Neuroradiology (J.K., T.H., A.P., M.J., S.H., M.B.), Division of Child Neurology and Metabolic Medicine (A.Z., A.S.), Center for Child and Adolescent Medicine, Department of Neurology (G.S., W.W., M.W.), and Department of Neuroradiology (S.H.), Division of Experimental Radiology, Heidelberg University Hospital, Germany; Department of Neurology (J.M.H.), University of Michigan, Ann Arbor; Medical Faculty (M.J.), University of Tübingen; and German Cancer Consortium (DKTK) within the German Cancer Research Center (DKFZ) (W.W.), Heidelberg, Germany
| | - Wolfgang Wick
- From the Department of Neuroradiology (J.K., T.H., A.P., M.J., S.H., M.B.), Division of Child Neurology and Metabolic Medicine (A.Z., A.S.), Center for Child and Adolescent Medicine, Department of Neurology (G.S., W.W., M.W.), and Department of Neuroradiology (S.H.), Division of Experimental Radiology, Heidelberg University Hospital, Germany; Department of Neurology (J.M.H.), University of Michigan, Ann Arbor; Medical Faculty (M.J.), University of Tübingen; and German Cancer Consortium (DKTK) within the German Cancer Research Center (DKFZ) (W.W.), Heidelberg, Germany
| | - Markus Weiler
- From the Department of Neuroradiology (J.K., T.H., A.P., M.J., S.H., M.B.), Division of Child Neurology and Metabolic Medicine (A.Z., A.S.), Center for Child and Adolescent Medicine, Department of Neurology (G.S., W.W., M.W.), and Department of Neuroradiology (S.H.), Division of Experimental Radiology, Heidelberg University Hospital, Germany; Department of Neurology (J.M.H.), University of Michigan, Ann Arbor; Medical Faculty (M.J.), University of Tübingen; and German Cancer Consortium (DKTK) within the German Cancer Research Center (DKFZ) (W.W.), Heidelberg, Germany.
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Valek L, Auburger G, Tegeder I. Sensory neuropathy and nociception in rodent models of Parkinson's disease. Dis Model Mech 2019; 12:12/6/dmm039396. [PMID: 31248900 PMCID: PMC6602317 DOI: 10.1242/dmm.039396] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Parkinson's disease (PD) often manifests with prodromal pain and sensory losses whose etiologies are not well understood. Multiple genetic and toxicity-based rodent models of PD partly recapitulate the histopathology and motor function deficits. Although far less studied, there is some evidence that rodents, similar to humans, develop sensory manifestations of the disease, which may precede motor disturbances and help to elucidate the underlying mechanisms of PD-associated pain at the molecular and neuron circuit levels. The present Review summarizes nociception and other sensory functions in frequently used rodent PD models within the context of the complex phenotypes. In terms of mechanisms, it appears that the acute loss of dopaminergic neurons in systemic toxicity models (MPTP, rotenone) primarily causes nociceptive hyperexcitability, presumably owing to a loss of inhibitory control, whereas genetic models primarily result in a progressive loss of heat perception, reflecting sensory fiber neuropathies. At the molecular level, neither α-synuclein deposits alone nor failure of mitophagy alone appear to be strong enough to result in axonal or synaptic pathology of nociceptive neurons that manifest at the behavioral level, and peripheral sensory loss may mask central ‘pain’ in behavioral tests. Hence, allostatic combinations or additional challenges and novel behavioral assessments are needed to better evaluate PD-associated sensory neuropathies and pain in rodents. Summary: Rodent models of Parkinson's disease partially develop prodromal somatosensory and olfactory dysfunctions reminiscent of sensory neuropathies in patients and reveal mechanistic insight, but data are incomplete and fragmented.
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Affiliation(s)
- Lucie Valek
- Institute of Clinical Pharmacology, Goethe-University Hospital, 60590 Frankfurt, Germany
| | - Georg Auburger
- Experimental Neurology, Goethe-University Hospital, 60590 Frankfurt, Germany
| | - Irmgard Tegeder
- Institute of Clinical Pharmacology, Goethe-University Hospital, 60590 Frankfurt, Germany
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Haberberger RV, Barry C, Dominguez N, Matusica D. Human Dorsal Root Ganglia. Front Cell Neurosci 2019; 13:271. [PMID: 31293388 PMCID: PMC6598622 DOI: 10.3389/fncel.2019.00271] [Citation(s) in RCA: 125] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 06/04/2019] [Indexed: 12/14/2022] Open
Abstract
Sensory neurons with cell bodies situated in dorsal root ganglia convey information from external or internal sites of the body such as actual or potential harm, temperature or muscle length to the central nervous system. In recent years, large investigative efforts have worked toward an understanding of different types of DRG neurons at transcriptional, translational, and functional levels. These studies most commonly rely on data obtained from laboratory animals. Human DRG, however, have received far less investigative focus over the last 30 years. Nevertheless, knowledge about human sensory neurons is critical for a translational research approach and future therapeutic development. This review aims to summarize both historical and emerging information about the size and location of human DRG, and highlight advances in the understanding of the neurochemical characteristics of human DRG neurons, in particular nociceptive neurons.
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Affiliation(s)
- Rainer Viktor Haberberger
- Pain and Pulmonary Neurobiology Laboratory, Centre for Neuroscience, Anatomy and Histology, Flinders University, Adelaide, SA, Australia.,Órama Institute, Flinders University, Adelaide, SA, Australia
| | - Christine Barry
- Pain and Pulmonary Neurobiology Laboratory, Centre for Neuroscience, Anatomy and Histology, Flinders University, Adelaide, SA, Australia
| | - Nicholas Dominguez
- Pain and Pulmonary Neurobiology Laboratory, Centre for Neuroscience, Anatomy and Histology, Flinders University, Adelaide, SA, Australia
| | - Dusan Matusica
- Pain and Pulmonary Neurobiology Laboratory, Centre for Neuroscience, Anatomy and Histology, Flinders University, Adelaide, SA, Australia.,Órama Institute, Flinders University, Adelaide, SA, Australia
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34
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Prevalence of fascicular hyperintensities in peripheral nerves of healthy individuals with regard to cerebral white matter lesions. Eur Radiol 2019; 29:3480-3487. [DOI: 10.1007/s00330-019-06145-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 02/21/2019] [Accepted: 03/08/2019] [Indexed: 12/12/2022]
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35
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Dorsal root ganglia volume is increased in patients with the Fabry-related GLA variant p.D313Y. J Neurol 2019; 266:1332-1339. [DOI: 10.1007/s00415-019-09262-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 02/24/2019] [Accepted: 02/26/2019] [Indexed: 10/27/2022]
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36
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Masotti M, Delprete C, Dothel G, Donadio V, Rimondini R, Politei JM, Liguori R, Caprini M. Altered globotriaosylceramide accumulation and mucosal neuronal fiber density in the colon of the Fabry disease mouse model. Neurogastroenterol Motil 2019; 31:e13529. [PMID: 30609268 DOI: 10.1111/nmo.13529] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 10/24/2018] [Accepted: 11/28/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND Fabry disease (FD) is a hereditary X-linked metabolic storage disorder characterized by deficient or absent lysosomal α-galactosidase A (α-Gal A) activity. This deficiency causes progressive accumulation of glycosphingolipids, primarily globotriaosylceramide (Gb3), in nearly all organ systems. Gastrointestinal (GI) symptoms can be very debilitating and are among the most frequent and earliest of the disease. As the pathophysiology of these symptoms is poorly understood, we carried out a morphological and molecular characterization of the GI tract in α-Gal A knockout mice colon in order to reveal the underlying mechanisms. METHODS Here, we performed the first morphological and biomolecular characterization of the colon wall structure in the GI tract of the α-Gal A knock-out mouse (α-Gal A -/0), a murine model of FD. KEY RESULTS Our data show a greater thickness of the gastrointestinal wall in α-Gal A (-/0) mice due to enlarged myenteric plexus' ganglia. This change is paralleled by a marked Gb3 accumulation in the gastrointestinal wall and a decreased and scattered pattern of mucosal nerve fibers. CONCLUSIONS AND INFERENCES The observed alterations are likely to be a leading cause of gut motor dysfunctions experienced by FD patients and imply that the α-Gal A (-/0) male mouse represents a reliable model for translational studies on enteropathic pain and GI symptoms in FD.
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Affiliation(s)
- Martina Masotti
- Department of Pharmacy and Biotechnology (FaBiT), Laboratory of Human and General Physiology, University of Bologna, Bologna, Italy
| | - Cecilia Delprete
- Department of Pharmacy and Biotechnology (FaBiT), Laboratory of Human and General Physiology, University of Bologna, Bologna, Italy
| | - Giovanni Dothel
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
| | - Vincenzo Donadio
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
| | - Roberto Rimondini
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
| | - Juan Manuel Politei
- Fundation for the Study of Neurometabolic Diseases, FESEN, Buenos Aires, Argentina
| | - Rocco Liguori
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy.,Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy
| | - Marco Caprini
- Department of Pharmacy and Biotechnology (FaBiT), Laboratory of Human and General Physiology, University of Bologna, Bologna, Italy
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37
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Godel T, Pham M, Kele H, Kronlage M, Schwarz D, Brunée M, Heiland S, Bendszus M, Bäumer P. Diffusion tensor imaging in anterior interosseous nerve syndrome - functional MR Neurography on a fascicular level. NEUROIMAGE-CLINICAL 2019; 21:101659. [PMID: 30642759 PMCID: PMC6412076 DOI: 10.1016/j.nicl.2019.101659] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 12/21/2018] [Accepted: 01/04/2019] [Indexed: 12/31/2022]
Abstract
Purpose By applying diffusor tensor imaging (DTI) in patients with anterior interosseous nerve syndrome (AINS), this proof of principle study aims to quantify the extent of structural damage of a peripheral nerve at the anatomical level of individual fascicles. Methods In this institutional review board approved prospective study 13 patients with spontaneous AINS were examined at 3 Tesla including a transversal T2-weighted turbo-spin-echo and a spin-echo echo-planar-imaging pulse sequence of the upper arm level. Calculations of quantitative DTI parameters including fractional anisotropy (FA), mean diffusivity (MD), radial diffusivity (RD), and axial diffusivity (AD) for median nerve lesion and non-lesion fascicles as well as ulnar and radial nerve were obtained. DTI values were compared to each other and to a previously published dataset of 58 healthy controls using one-way Analysis of Variance with Bonferroni correction and p-values <.05 were considered significant. Receiver operating characteristic (ROC) curves were performed to assess diagnostic accuracy. Results FA of median nerve lesion fascicles was decreased compared to median nerve non-lesion fascicles, ulnar nerve and radial nerve while MD, RD, and AD was increased (p < .001 for all parameters). Compared to median nerve values of healthy controls, lesion fascicles showed a significant decrease in FA while MD, RD, and AD was increased (p < .001 for all parameters). FA of median nerve non-lesion fascicles showed a weak significant decrease compared to healthy controls (p < .01) while there was no difference in MD, RD, and AD. ROC analyses revealed an excellent diagnostic accuracy of FA, MD and RD in the discrimination of median nerve lesion and non-lesion fascicles in AINS patients as well as in the discrimination of lesion fascicles and normative median nerve values of healthy controls. Conclusion By applying this functional MR Neurography technique in patients with AINS, this proof of principle study demonstrates that diffusion tensor imaging is feasible to quantify structural nerve injury at the anatomical level of individual fascicles. DTI is capable to quantify structural nerve injury on a fascicular level. Lesion- and non-lesion fascicles can be discriminated at high diagnostic accuracy. FA seems to be to most sensitive parameter in quantitative DTI.
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Affiliation(s)
- Tim Godel
- Department of Neuroradiology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
| | - Mirko Pham
- Department of Neuroradiology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany; Department of Neuroradiology, Würzburg University Hospital, Josef-Schneider-Str. 11, 97080 Würzburg, Germany.
| | - Henrich Kele
- Center for Neurology and Clinical Neurophysiology, Neuer Wall 19, 20354 Hamburg, Germany.
| | - Moritz Kronlage
- Department of Neuroradiology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
| | - Daniel Schwarz
- Department of Neuroradiology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
| | - Merle Brunée
- Department of Neuroradiology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
| | - Sabine Heiland
- Department of Neuroradiology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
| | - Martin Bendszus
- Department of Neuroradiology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
| | - Philipp Bäumer
- Department of Neuroradiology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany; Center for Radiology Dia.log, Vinzenz-von-Paul Str. 8, 84503 Altötting, Germany.
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38
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Dorsal root ganglia in vivo morphometry and perfusion in female patients with Fabry disease. J Neurol 2018; 265:2723-2729. [DOI: 10.1007/s00415-018-9053-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 09/06/2018] [Accepted: 09/07/2018] [Indexed: 10/28/2022]
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39
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Kummer KK, Kalpachidou T, Mitrić M, Langeslag M, Kress M. Altered Gene Expression in Prefrontal Cortex of a Fabry Disease Mouse Model. Front Mol Neurosci 2018; 11:201. [PMID: 30013462 PMCID: PMC6036252 DOI: 10.3389/fnmol.2018.00201] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 05/18/2018] [Indexed: 11/13/2022] Open
Abstract
Fabry disease is an X-chromosome linked hereditary disease that is caused by loss of function mutations in the α-galactosidase A (α-Gal A) gene, resulting in defective glycolipid degradation and subsequent accumulation of globotriaosylceramide (Gb3) in different tissues, including vascular endothelial cells and neurons in the peripheral and central nervous system. We recently reported a differential gene expression profile of α-Gal A(−/0) mouse dorsal root ganglia, an established animal model of Fabry disease, thereby providing new gene targets that might underlie the neuropathic pain related symptoms. To investigate the cognitive symptoms experienced by Fabry patients, we performed one-color based hybridization microarray expression profiling of prefrontal cortex samples from adult α-Gal A(−/0) mice and age-matched wildtype controls, followed by protein-protein interaction and pathway analyses for the differentially regulated mRNAs. We found that from a total of 381 differentially expressed genes, 135 genes were significantly upregulated, whereas 246 genes were significantly downregulated between α-Gal A(−/0) mice and wildtype controls. Enrichment analysis for downregulated genes revealed mainly immune related pathways, including immune/defense responses, regulation of cytokine production, as well as signaling and transport regulation pathways. Further analysis of the regulated genes revealed a large number of genes involved in neurodegeneration. The current analysis for the first time presents a differential gene expression profile of central nervous system tissue from α-Gal A(−/0) mice, thereby providing novel knowledge on the deregulation and a possible contribution of gene expression to Fabry disease related brain pathologies.
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Affiliation(s)
- Kai K Kummer
- Division of Physiology, Department of Physiology and Medical Physics Medical, University of Innsbruck, Innsbruck, Austria
| | - Theodora Kalpachidou
- Division of Physiology, Department of Physiology and Medical Physics Medical, University of Innsbruck, Innsbruck, Austria
| | - Miodrag Mitrić
- Division of Physiology, Department of Physiology and Medical Physics Medical, University of Innsbruck, Innsbruck, Austria
| | - Michiel Langeslag
- Division of Physiology, Department of Physiology and Medical Physics Medical, University of Innsbruck, Innsbruck, Austria
| | - Michaela Kress
- Division of Physiology, Department of Physiology and Medical Physics Medical, University of Innsbruck, Innsbruck, Austria
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40
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Yoshida T, Sueyoshi T, Suwazono S, Kinjo M, Nodera H. Detection of atrophy of dorsal root ganglion with 3-T magnetic resonance neurography in sensory ataxic neuropathy associated with Sjögren's syndrome. Eur J Neurol 2018; 25:e78-e79. [PMID: 29913055 DOI: 10.1111/ene.13647] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 03/22/2018] [Indexed: 11/26/2022]
Affiliation(s)
- T Yoshida
- Rheumatology, Okinawa Chubu Hospital, Uruma, Japan.,Neurology, Tokushima University School of Medicine, Tokushima, Japan
| | - T Sueyoshi
- Radiology, Minei Daiichi Hospital, Urasoe, Japan
| | - S Suwazono
- Neurology, National Hospital Organization Okinawa Hospital, Ginowan, Japan
| | - M Kinjo
- Rheumatology, Okinawa Chubu Hospital, Uruma, Japan
| | - H Nodera
- Neurology, Tokushima University School of Medicine, Tokushima, Japan
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41
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Godel T, Mautner VF, Farschtschi S, Pham M, Schwarz D, Kronlage M, Gugel I, Heiland S, Bendszus M, Bäumer P. Dorsal root ganglia volume differentiates schwannomatosis and neurofibromatosis 2. Ann Neurol 2018; 83:854-857. [PMID: 29469988 DOI: 10.1002/ana.25191] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 02/20/2018] [Accepted: 02/21/2018] [Indexed: 12/13/2022]
Abstract
Schwannomatosis and neurofibromatosis type 2 are hereditary tumor syndromes, and peripheral neuropathy has been reported in both. We prospectively applied in vivo morphometric measurement of dorsal root ganglia volume in 16 schwannomatosis patients, 14 neurofibromatosis type 2 patients, and 26 healthy controls by magnetic resonance neurography. Compared to healthy controls, dorsal root ganglia hypertrophy was a consistent finding in neurofibromatosis type 2 (L3, + 267%; L4, + 235%; L5, + 241%; S1, + 300%; S2, + 242%; Bonferroni-adjusted p < 0.001) but not in schwannomatosis. Dorsal root ganglia may be a vulnerable site in origination of areflexia and sensory loss and a useful diagnostic marker in neurofibromatosis type 2. Ann Neurol 2018;83:854-857.
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Affiliation(s)
- Tim Godel
- Department of Neuroradiology, Neurological University Clinic, Heidelberg University Hospital, Heidelberg
| | | | - Said Farschtschi
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg
| | - Mirko Pham
- Department of Neuroradiology, Neurological University Clinic, Heidelberg University Hospital, Heidelberg.,Department of Neuroradiology, Würzburg University Hospital, Würzburg
| | - Daniel Schwarz
- Department of Neuroradiology, Neurological University Clinic, Heidelberg University Hospital, Heidelberg
| | - Moritz Kronlage
- Department of Neuroradiology, Neurological University Clinic, Heidelberg University Hospital, Heidelberg
| | - Isabel Gugel
- Department of Neurosurgery, Tübingen University Hospital, Tübingen
| | - Sabine Heiland
- Department of Neuroradiology, Neurological University Clinic, Heidelberg University Hospital, Heidelberg
| | - Martin Bendszus
- Department of Neuroradiology, Neurological University Clinic, Heidelberg University Hospital, Heidelberg
| | - Philipp Bäumer
- Department of Neuroradiology, Neurological University Clinic, Heidelberg University Hospital, Heidelberg.,Department of Radiology, German Cancer Research Institute, Heidelberg, Germany
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Miller JJ, Aoki K, Moehring F, Murphy CA, O’Hara CL, Tiemeyer M, Stucky CL, Dahms NM. Neuropathic pain in a Fabry disease rat model. JCI Insight 2018; 3:99171. [PMID: 29563343 PMCID: PMC5926911 DOI: 10.1172/jci.insight.99171] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 02/07/2018] [Indexed: 02/06/2023] Open
Abstract
Fabry disease, the most common lysosomal storage disease, affects multiple organs and results in a shortened life span. This disease is caused by a deficiency of the lysosomal enzyme α-galactosidase A, which leads to glycosphingolipid accumulation in many cell types. Neuropathic pain is an early and severely debilitating symptom in patients with Fabry disease, but the cellular and molecular mechanisms that cause the pain are unknown. We generated a rat model of Fabry disease, the first nonmouse model to our knowledge. Fabry rats had substantial serum and tissue accumulation of α-galactosyl glycosphingolipids and had pronounced mechanical pain behavior. Additionally, Fabry rat dorsal root ganglia displayed global N-glycan alterations, sensory neurons were laden with inclusions, and sensory neuron somata exhibited prominent sensitization to mechanical force. We found that the cation channel transient receptor potential ankyrin 1 (TRPA1) is sensitized in Fabry rat sensory neurons and that TRPA1 antagonism reversed the behavioral mechanical sensitization. This study points toward TRPA1 as a potentially novel target to treat the pain experienced by patients with Fabry disease.
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Affiliation(s)
- James J. Miller
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Kazuhiro Aoki
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | - Francie Moehring
- Department of Cell Biology, Neurobiology, & Anatomy, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Carly A. Murphy
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Crystal L. O’Hara
- Department of Cell Biology, Neurobiology, & Anatomy, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Michael Tiemeyer
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | - Cheryl L. Stucky
- Department of Cell Biology, Neurobiology, & Anatomy, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Nancy M. Dahms
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
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43
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Kummer KK, Kalpachidou T, Kress M, Langeslag M. Signatures of Altered Gene Expression in Dorsal Root Ganglia of a Fabry Disease Mouse Model. Front Mol Neurosci 2018; 10:449. [PMID: 29422837 PMCID: PMC5788883 DOI: 10.3389/fnmol.2017.00449] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 12/22/2017] [Indexed: 12/19/2022] Open
Abstract
Fabry disease is an X-linked lysosomal storage disorder with involvement of the nervous system. Accumulation of glycosphingolipids within peripheral nerves and/or dorsal root ganglia results in pain due to small-fiber neuropathy, which affects the majority of patients already in early childhood. The α-galactosidase A deficient mouse proved to be an adequate model for Fabry disease, as it shares many symptoms including altered temperature sensitivity and pain perception. To characterize the signatures of gene expression that might underlie Fabry disease-associated sensory deficits and pain, we performed one-color based hybridization microarray expression profiling of DRG explants from adult α-galactosidase A deficient mice and age-matched wildtype controls. Protein-protein interaction (PPI) and pathway analyses were performed for differentially regulated mRNAs. We found 812 differentially expressed genes between adult α-galactosidase A deficient mice and age-matched wildtype controls, 506 of them being upregulated, and 306 being downregulated. Among the enriched pathways and processes, the disease-specific pathways “lysosome” and “ceramide metabolic process” were identified, enhancing reliability of the current analysis. Novel pathways that we identified include “G-protein coupled receptor signaling” and “retrograde transport” for the upregulated genes. From the analysis of downregulated genes, immune-related pathways, autoimmune, and infection pathways emerged. The current analysis is the first to present a differential gene expression profile of DRGs from α-galactosidase A deficient mice, thereby providing knowledge on possible mechanisms underlying neuropathic pain related symptoms in Fabry patients. Therefore, the presented data provide new insights into the development of the pain phenotype and might lead to new treatment strategies.
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Affiliation(s)
- Kai K Kummer
- Division of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck, Innsbruck, Austria
| | - Theodora Kalpachidou
- Division of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck, Innsbruck, Austria
| | - Michaela Kress
- Division of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck, Innsbruck, Austria
| | - Michiel Langeslag
- Division of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck, Innsbruck, Austria
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