Journals Journal of the Peripheral Nerv...

Journal of the Peripheral Nervous System : JPNS
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October 2023: Journal of the Peripheral Nervous System: JPNS
Yun Tian, Xuan Hou, Wanqian Cao, Lu Zhou, Bin Jiao, Sizhe Zhang, Qiao Xiao, Jin Xue, Ying Wang, Ling Weng, Liangjuan Fang, Honglan Yang, Yafang Zhou, Fang Yi, Xiaoyu Chen, Juan Du, Qian Xu, Li Feng, Zhenhua Liu, Sen Zeng, Qiying Sun, Nina Xie, Mengchuan Luo, Mengli Wang, Mengqi Zhang, Qiuming Zeng, Shunxiang Huang, Lingyan Yao, Yacen Hu, Hongyu Long, Yuanyuan Xie, Si Chen, Qing Huang, Junpu Wang, Bin Xie, Lin Zhou, Lili Long, Jifeng Guo, Junling Wang, Xinxiang Yan, Hong Jiang, Hongwei Xu, Ranhui Duan, Beisha Tang, Ruxu Zhang, Lu Shen
BACKGROUND AND AIMS: Neuronal intranuclear inclusion disease (NIID) is a rare progressive neurodegenerative disorder mainly caused by abnormally expanded GGC repeats within the NOTCH2NLC gene. Most patients with NIID show polyneuropathy. Here, we aim to investigate diagnostic electrophysiological markers of NIID. METHODS: In this retrospective dual-center study, we reviewed 96 patients with NOTCH2NLC-related NIID, 94 patients with genetically confirmed Charcot-Marie-Tooth (CMT) disease, and 62 control participants without history of peripheral neuropathy, who underwent nerve conduction studies between 2018 and 2022...
September 25, 2023: Journal of the Peripheral Nervous System: JPNS
Zoi Kontogeorgiou, Chrisoula Kartanou, Michail Rentzos, Panagiotis Kokotis, Evangelos Anagnostou, Thomas Zambelis, Elisabeth Chroni, Argyris Dinopoulos, Marios Panas, Georgios Koutsis, Georgia Karadima
BACKGROUND AND AIMS: Axonal forms of Charcot-Marie-Tooth disease (CMT) are classified as CMT2, distal hereditary motor neuropathy (dHMN) or hereditary sensory neuropathy (HSN) and can be caused by mutations in over 100 genes. We presently aimed to investigate for the first time the genetic landscape of axonal CMT in the Greek population. METHODS: Sixty index patients with CMT2, dHMN or HSN were screened by a combination of Sanger sequencing (GJB1) and next-generation sequencing custom-made gene panel covering 24 commonly mutated genes in axonal CMT...
September 25, 2023: Journal of the Peripheral Nervous System: JPNS
Moodley K, Patel Vb, A A Moodley, Bill Pla, Kajee A, Mgbachi V, Fehmi J, Rinaldi S
BACKGROUND: The frequency of nodal-paranodal antibodies in HIV-infected patients with chronic immune mediated radiculo-neuropathies (IMRN) has not been previously described. METHODS: HIV-infected patients who met the inclusion criteria for chronic IMRN were screened for IgG antibodies directed against nodal (neurofascin (NF)186) and paranodal (NF155, contactin-1 (CNTN1) and contactin-associated protein, Caspr1) cell adhesion molecules, using a live, cell-based assay...
September 7, 2023: Journal of the Peripheral Nervous System: JPNS
Gülden Akdal, Koray Koçoğlu, Rahmi Tümay Ala, Tural Tanrıverdizade, Pınar Özçelik, İhsan Şükrü Şengün
No abstract text is available yet for this article.
September 4, 2023: Journal of the Peripheral Nervous System: JPNS
Jack R Fennessy, Kayla M D Cornett, Joshua Burns, Manoj P Menezes
Riboflavin transporter deficiency (RTD) is a progressive inherited neuropathy of childhood onset, characterised by pontobulbar palsy, sensorineural deafness, sensory ataxia, muscle weakness, optic atrophy and respiratory failure. Riboflavin supplementation is beneficial in short-term reports, but the quantum of benefit in various clinical domains is not well understood. A PubMed search was conducted, which identified 94 genetically confirmed cases of RTD who received riboflavin supplementation and had follow-up assessments...
September 2023: Journal of the Peripheral Nervous System: JPNS
Luca Leonardi, Rocco Costanzo, Francesca Forcina, Stefania Morino, Giovanni Antonini, Marco Salvetti, Marco Luigetti, Angela Romano, Guido Primiano, Valeria Guglielmino, Laura Fionda, Matteo Garibaldi, Antonio Lauletta, Elena Rossini, Laura Tufano, Marco Ceccanti, Nicoletta Esposito, Pietro Falco, Giuseppe di Pietro, Andrea Truini, Eleonora Galosi
INTRODUCTION: Hereditary transthyretin amyloidosis polyneuropathy (ATTRv-PN) presymptomatic carriers often show preclinical abnormalities at small fiber-related diagnostic tests. However, no validated biomarker is currently available to use for presymptomatic carriers' follow-up, thus helping therapeutic decision making. Our study aimed at assessing nerve conduction study (NCS), quantitative sensory testing (QST), and skin biopsy parameters in a large cohort of late-onset ATTRv presymptomatic carriers and to evaluate whether they correlated with predicted age of disease onset (PADO)...
September 2023: Journal of the Peripheral Nervous System: JPNS
Marianna Di Egidio, Cristian R Bacaglio, Rocio Arrejoría, Andrés M Villa, Gustavo A Nores, Pablo H H Lopez
BACKGROUND AND AIMS: Multifocal motor neuropathy (MMN) is a peripheral nerve disorder characterized by slow progressive distal asymmetric weakness with minimal or no sensory impairment. Currently, a vast evidence supports a direct pathogenic role of IgM anti-GM1 antibodies on disease pathogenesis. Patients with MMN seropositive for GM1-specific IgM antibodies have significantly more weakness, disability and axon loss than patients without these antibodies. During the screening for IgM anti-GM1 antibodies in a cohort of patients with neuropathy we noticed an absence or significant reduction of natural IgM anti-GM1 autoreactivity in some patients with MMN, suggesting a mechanism of self-control of autoreactivity...
September 2023: Journal of the Peripheral Nervous System: JPNS
Emil Peters, Mustapha Itani, Alexander G Kristensen, Astrid Juhl Terkelsen, Thomas Krøigård, Hatice Tankisi, Troels S Jensen, Nanna B Finnerup, Sandra Sif Gylfadottir
BACKGROUND AND AIMS: Cardiovascular autonomic neuropathy (CAN) in patients with diabetes is associated with poor prognosis. We aimed to assess signs of CAN and autonomic symptoms and to investigate the impact of sensorimotor neuropathy on CAN by examining type 2 diabetes patients with (DPN [distal sensorimotor polyneuropathy]) and without distal sensorimotor polyneuropathy (noDPN) and healthy controls (HC). Secondarily, we aimed to describe the characteristics of patients with CAN. METHODS: A population of 374 subjects from a previously described cohort of the Danish Centre for Strategic Research in Type 2 Diabetes (DD2) were included...
September 2023: Journal of the Peripheral Nervous System: JPNS
Arman Çakar, Gulandam Bagırova, Hacer Durmuş, Oya Uyguner, Yeşim Parman
BACKGROUND AND AIMS: Homozygous loss-of-function mutations in the RETREG1 gene result in Hereditary Sensory Autonomic Neuropathy Type 2B. Clinical features include pain loss, autonomic disturbances, and upper motor neuron features. METHODS: We evaluated the clinical and genetic features of seven patients from four families with RETREG1 variants. RESULTS: Five patients were male. The median age of disease onset was 7.00 ± 2...
September 2023: Journal of the Peripheral Nervous System: JPNS
Aurore Fernandez, Guillaume Graf, Aurélie Lasserre, Jean-Bernard Daeppen, Paul Chu Sin Chung, Chantal Berna, Marc R Suter
INTRODUCTION: Chronic heavy alcohol use is known to cause neurological complications such as peripheral neuropathy. Concerning the pathophysiology, few sural nerve and skin biopsy studies showed that small fibers might be selectively vulnerable to degeneration in alcohol-related peripheral neuropathy. Pain has rarely been properly evaluated in this pathology. The present study aims at assessing pain intensity, potential neuropathic characteristics as well as the functionality of both small and large nerve sensitive fibers...
September 2023: Journal of the Peripheral Nervous System: JPNS
Vera Bril, Robert D M Hadden, Thomas H Brannagan, Michal Bar, Elisabeth Chroni, Konrad Rejdak, Alberto Rivero, Henning Andersen, Norman Latov, Todd Levine, Mamatha Pasnoor, Sabrina Sacconi, Nizar Souayah, Colin Anderson-Smits, Kim Duff, Erin Greco, Shabbir Hasan, Zhaoyang Li, Leman Yel, Hakan Ay
BACKGROUND AND AIMS: ADVANCE-CIDP 1 evaluated facilitated subcutaneous immunoglobulin (fSCIG; human immunoglobulin G 10% with recombinant human hyaluronidase) efficacy and safety in preventing chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) relapse. METHODS: ADVANCE-CIDP 1 was a phase 3, double-blind, placebo-controlled trial conducted at 54 sites in 21 countries. Eligible adults had definite or probable CIDP and adjusted Inflammatory Neuropathy Cause and Treatment (INCAT) disability scores of 0-7 (inclusive), and received stable intravenous immunoglobulin (IVIG) for ≥12 weeks before screening...
September 2023: Journal of the Peripheral Nervous System: JPNS
Matthew Silsby, Con Yiannikas, Alessandro F Fois, Karl Ng, Matthew C Kiernan, Victor S C Fung, Steve Vucic
BACKGROUND AND AIMS: Imbalance is a prominent symptom of chronic inflammatory demyelinating polyradiculoneuropathy (CIDP). Although upper limb tremor in CIDP is described, lower limb tremor has not been assessed. The aim of this study was to determine whether lower limb tremor was present in CIDP and assess potential relationships with imbalance. METHODS: This was a cross-sectional observational study of prospectively recruited consecutive patients with typical CIDP (N = 25)...
September 2023: Journal of the Peripheral Nervous System: JPNS
Andreas Törnell, Nina Lagerström, Natalia Mossberg, Roberta Kiffin, Helen Farman, Jan Lycke, Oluf Andersen, Markus Axelsson, Kristoffer Hellstrand, Anna Martner
BACKGROUND AND AIMS: Guillain-Barré syndrome (GBS) is a rare, acute neuropathy characterized by ascending muscle weakness. Age, axonal GBS variants, and antecedent Campylobacter jejuni infection are associated with severe GBS, but the detailed mechanisms of nerve damage are only partly explored. Pro-inflammatory myeloid cells express NADPH oxidases (NOX) that generate tissue-toxic reactive oxygen species (ROS) that are implicated in neurodegenerative diseases. This study analyzed the impact of variants of the gene encoding the functional NOX subunit CYBA (p22phox ) on acute severity, axonal damage, and recovery in adult GBS patients...
September 2023: Journal of the Peripheral Nervous System: JPNS
Guido Cavaletti, Katherine Forsey, Paola Alberti
BACKGROUND AND AIMS: Several widely used medications, with a relevant efficacy profile, are toxic to the peripheral nervous system and an even larger number of agents are suspected to be neurotoxic. There are concerns about the use of these drugs in patients with Charcot-Marie-Tooth disease (CMT), a hereditary motor and sensory neuropathy. This review provides evidence-based updated recommendations on this clinically relevant topic. METHODS: A systematic review of the available studies/reports written in English was performed from July to September 2022 including in the search string all reported putative neurotoxic drugs...
September 2023: Journal of the Peripheral Nervous System: JPNS
Lorenzo Bresciani, Alessandro Salvalaggio, Elisa Vegezzi, Andrea Visentin, Andrea Fortuna, Mariagiulia Anglani, Mario Cacciavillani, Stefano Masciocchi, Silvia Scaranzin, Miryam Carecchio, Andrea Martinuzzi, Matteo Gastaldi, Chiara Briani
AIM: Nodopathies and paranodopathies are autoimmune neuropathies associated with antibodies to nodal-paranodal antigens (neurofascin 140/186 and 155, contactin-1, contactin-associated protein 1 [Caspr1]) characterized by peculiar clinical features, poor response to standard immunotherapies (e.g., intravenous immunoglobulins, IVIg). Improvement after anti-CD20 monoclonal antibody therapy has been reported. Data on Caspr1 antibodies pathogenicity are still preliminary, and longitudinal titers have been poorly described...
September 2023: Journal of the Peripheral Nervous System: JPNS
Peter N Hansen, Abdullahi A Mohammed, Lars K Markvardsen, Henning Andersen, Hatice Tankisi, Søren H Sindrup, Thomas Krøigård
BACKGROUND AND AIMS: Intravenous immunoglobulin (IVIg) has a rapid clinical effect which cannot be explained by remyelination during each treatment cycle in patients with chronic inflammatory demyelinating polyneuropathy (CIDP). This study aimed to investigate axonal membrane properties during the IVIg treatment cycle and their potential correlation with clinically relevant functional measurements. METHODS: Motor nerve excitability testing (NET) of the median nerve was performed before and 4 and 18 days after initiation of an IVIg treatment cycle in 13 treatment-naïve (early) CIDP patients and 24 CIDP patients with long term (late) IVIg treatment, 12 CIDP patients treated with subcutaneous immunoglobulin (SCIg) and 55 healthy controls...
September 2023: Journal of the Peripheral Nervous System: JPNS
Poornima Jayadev Menon, Petya Bogdanova-Mihaylova, Garret McDermott, Paul Crowley, Ronan P Killeen, Michael D Alexander, Sean O'Dowd, Sinéad M Murphy
AIM: Hereditary sensory neuropathy (HSN) 1E is a neurodegenerative disorder caused by pathogenic variants in DNA methyltransferase 1 (DNMT1). It is characterised by sensorineural deafness, sensory neuropathy and cognitive decline. Variants in DNMT1 are also associated with autosomal dominant cerebellar ataxia, deafness and narcolepsy. METHODS: A 42-year-old man presented with imbalance, lancinating pain, numerous paucisymptomatic injuries, progressive deafness since his mid-20s, mild cognitive decline and apathy...
September 2023: Journal of the Peripheral Nervous System: JPNS
Asger Bjørnkaer, Laura M Gaist, Jakob V Holbech, David Gaist, Martin Wirenfeldt, Søren H Sindrup, Thomas Krøigård
BACKGROUND AND AIMS: The diagnosis of small fiber neuropathy (SFN) is supported by reduced intraepidermal nerve fiber density (IENFD). The noninvasive method corneal confocal microscopy (CCM) has the potential to be a practical alternative. We aimed to estimate the diagnostic accuracy of CCM compared with IENFD and cold detection thresholds (CDT) in SFN and mixed fiber neuropathy (MFN). METHODS: CCM was performed in an unselected prospective cohort of patients with a clinical suspicion of polyneuropathy...
August 31, 2023: Journal of the Peripheral Nervous System: JPNS
Lu Li, Yongzhi Xie, Sen Zeng, Xiaobo Li, Zhiqiang Lin, Shunxiang Huang, Huadong Zhao, Wanqian Cao, Lei Liu, Jun Liu, Pengfei Rong, Ruxu Zhang
BACKGROUND AND AIMS: Biallelic variants in the sorbitol dehydrogenase (SORD) gene have been identified as the genetic cause of autosomal recessive (AR) peripheral neuropathy (PN) manifesting as Charcot-Marie-Tooth disease type 2 (CMT2) or distal hereditary motor neuropathy (dHMN). We aim to observe the genetic and clinical spectrum of a cohort of patients with SORD-related PN (SORD-PN). METHODS: A total of 107 patients with AR or sporadic CMT2/dHMN underwent molecular diagnosis by whole-exome sequencing and subsequent Sanger sequencing validation...
August 16, 2023: Journal of the Peripheral Nervous System: JPNS
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