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Shao W, Liu X, Li J, Sheng T, Li Y, Gu Y, Deng B, Wang J, Yang W, Yu H, Zhang X, Chen X. Characteristics of cerebrospinal fluid oligoclonal band in anti-myelin oligodendrocyte glycoprotein (MOG) antibody associated disease. Heliyon 2024; 10:e24742. [PMID: 38434296 PMCID: PMC10907529 DOI: 10.1016/j.heliyon.2024.e24742] [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: 06/26/2023] [Revised: 11/30/2023] [Accepted: 01/12/2024] [Indexed: 03/05/2024] Open
Abstract
Objective To analyze the immune parameters of cerebrospinal fluid (CSF) and oligoclonal band (OCB) type in patients with anti-myelin oligodendrocyte glycoprotein (MOG) antibody-associated diseases (MOGAD). Methods Patients who were seropositive for MOG-IgG and diagnosed with MOGAD according to the diagnosis criteria in the Department of Neurology, Huashan Hospital, Fudan University from December 2020 to June 2022 were retrospectively included in this study. Complete clinical data, blood and cerebrospinal fluid samples were collected from all the participants. Paired serum and CSF MOG-IgG and autoimmune encephalitis antibody were assayed by Cell Based Assay (CBA) based on transfected target antigens. Paired serum and CSF albumin and IgG were detected by turbidimetric scattering method, and OCB was detected by standard operation procedure as described. Results A total of 86 patients (44 males and 42 females) with MOGAD were included in this study, with a median age of 30 years (range: 5-82 years). Among all the patients, 73 patients showed OCB type I, 12 patients showed OCB type II, and one patient showed OCB type III. The overall positive rate of CSF-OCB in MOGAD patients was 15.1 %. The 24-h intrathecal synthesis rate of CSF in the OCB-positive group (n = 13) was higher than that in the OCB-negative group [n = 73, 0.62 (0.26) vs 5.11 (13.67), P = 0.003]. Subgroup analysis revealed that the positive rates of CSF-OCB in the single MOG group (n = 61) and the group combined with other antibodies (n = 25) were 14.8 % and 16.0 %, respectively. The incidence of meningoencephalitis (13/61 vs 13/25, P = 0.011) was significantly different between the two groups. The proportion of patients with high (≥1:32) or low (≤1:10) CSF MOG-IgG also showed significant difference in the group combined with other antibodies (P = 0.032). Optic neuritis was more common in the relapse course group (n = 49) than the monophasic course group (n = 37, P < 0.001) No significant diferences of CSF immune parameters were found in the MOG-IgGserum+/CSF- group and the MOG-IgGserum+/CSF + group, and the titer of MOG-IgG in the serum or CSF did not influence CSF immune parameters in different subgroups. Conclusion The overall positive rate of CSF-OCB in MOGAD patients was 15.1 %. The 24-h intrathecal synthesis rate of cerebrospinal fluid in the OCB-positive group was higher than that in the OCB-negative group. This study illustrated OCB characterization in MOGAD patients, and will shed light on the standardization of OCB test in the study of immune diseases.
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Affiliation(s)
- Wenjun Shao
- Department of Neurology, Huashan Hospital and Institute of Neurology, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, China
- Department of Neurology, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan, 450003, China
| | - Xiaoni Liu
- Department of Neurology, Huashan Hospital and Institute of Neurology, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, China
- National Center for Neurological Disorders, China
| | - Jiatong Li
- Department of Neurology, Huashan Hospital and Institute of Neurology, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, China
- National Center for Neurological Disorders, China
| | - Tianyang Sheng
- Department of Neurology, Huashan Hospital and Institute of Neurology, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, China
- National Center for Neurological Disorders, China
| | - Yarong Li
- Department of Neurology, Huashan Hospital and Institute of Neurology, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, China
- National Center for Neurological Disorders, China
| | - Yuehua Gu
- Department of Neurology, Huashan Hospital and Institute of Neurology, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, China
- National Center for Neurological Disorders, China
| | - Bo Deng
- Department of Neurology, Huashan Hospital and Institute of Neurology, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, China
- National Center for Neurological Disorders, China
| | - Jingguo Wang
- Department of Neurology, Huashan Hospital and Institute of Neurology, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, China
- National Center for Neurological Disorders, China
| | - Wenbo Yang
- Department of Neurology, Huashan Hospital and Institute of Neurology, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, China
- National Center for Neurological Disorders, China
| | - Hai Yu
- Department of Neurology, Huashan Hospital and Institute of Neurology, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, China
- National Center for Neurological Disorders, China
| | - Xiang Zhang
- Department of Neurology, Huashan Hospital and Institute of Neurology, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, China
- National Center for Neurological Disorders, China
| | - Xiangjun Chen
- Department of Neurology, Huashan Hospital and Institute of Neurology, Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, China
- National Center for Neurological Disorders, China
- Human Phenome Institute, Fudan University, Shanghai, China
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2
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Seeliger T, Gingele S, Güzeloglu YE, Heitmann L, Lüling B, Kohle F, Preßler H, Stascheit F, Motte J, Fisse AL, Grüter T, Pitarokoili K, Skripuletz T. Comparative analysis of albumin quotient and total CSF protein in immune-mediated neuropathies: a multicenter study on diagnostic implications. Front Neurol 2024; 14:1330484. [PMID: 38264088 PMCID: PMC10803547 DOI: 10.3389/fneur.2023.1330484] [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: 10/31/2023] [Accepted: 12/26/2023] [Indexed: 01/25/2024] Open
Abstract
Introduction Blood-cerebrospinal fluid (CSF) barrier dysfunction is pivotal for diagnosing immune-mediated neuropathies, especially in spinal nerve root inflammation. Typically, either total CSF protein or the CSF to serum albumin ratio (QAlb) is measured. Total CSF protein measurements have limitations, notably its fixed reference value regardless of age, in contrast to the age-dependent reference for QAlb. Our goal was to evaluate both markers in patients with immune-mediated neuropathies. Methods In our multicenter research, we collected retrospective CSF data from patients suffering from immune-mediated neuropathies across four German research centers. These parameters were analyzed in relation to their clinical characteristics. Results Out of 419 samples, 36 (8.6%) displayed a notable variation between total CSF protein and QAlb values. A detailed analysis revealed that patients displaying elevated QAlb but normal total CSF protein levels were significantly younger at disease onset (p = 0.01), at the time of diagnosis (p = 0.005), and when undergoing lumbar puncture (p = 0.001) compared to patients with elevated CSF protein and normal QAlb levels. These effects were especially evident for the subgroup of samples derived by female patients. Discussion Our work confirms the crucial role of QAlb in diagnosing immune-mediated neuropathies and particularly its efficacy as a marker for evaluating the blood-CSF barrier in patients with an earlier disease onset. Considering the significance of the albumin quotient, its assessment is especially advisable in younger patients of female sex to avoid missing a potential barrier dysfunction that might be falsely negative when using total protein.
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Affiliation(s)
- Tabea Seeliger
- Department of Neurology, Hannover Medical School, Hannover, Germany
| | - Stefan Gingele
- Department of Neurology, Hannover Medical School, Hannover, Germany
| | | | - Lena Heitmann
- Department of Neurology, Hannover Medical School, Hannover, Germany
| | - Benjamin Lüling
- Department of Neurology, St Josef Hospital, Ruhr University Bochum, Bochum, Germany
| | - Felix Kohle
- Department of Neurology, Faculty of Medicine and University Hospital of Cologne, University of Cologne, Cologne, Germany
| | - Hannah Preßler
- Department of Neurology with Experimental Neurology, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität, Berlin, Germany
- Neuroscience Clinical Research Center, Charité — Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Frauke Stascheit
- Department of Neurology with Experimental Neurology, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität, Berlin, Germany
- Neuroscience Clinical Research Center, Charité — Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Jeremias Motte
- Department of Neurology, St Josef Hospital, Ruhr University Bochum, Bochum, Germany
| | - Anna Lena Fisse
- Department of Neurology, St Josef Hospital, Ruhr University Bochum, Bochum, Germany
| | - Thomas Grüter
- Department of Neurology, St Josef Hospital, Ruhr University Bochum, Bochum, Germany
| | - Kalliopi Pitarokoili
- Department of Neurology, St Josef Hospital, Ruhr University Bochum, Bochum, Germany
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Sato R, Shimizu F, Kuwahara M, Mizukami Y, Watanabe K, Maeda T, Sano Y, Takeshita Y, Koga M, Kusunoki S, Kanda T. Autocrine TNF-α Increases Penetration of Myelin-Associated Glycoprotein Antibodies Across the Blood-Nerve Barrier in Anti-MAG Neuropathy. NEUROLOGY(R) NEUROIMMUNOLOGY & NEUROINFLAMMATION 2023; 10:10/3/e200086. [PMID: 36810162 PMCID: PMC9944621 DOI: 10.1212/nxi.0000000000200086] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 11/28/2022] [Indexed: 02/23/2023]
Abstract
BACKGROUND AND OBJECTIVES Deposition of myelin-associated glycoprotein (MAG) immunoglobulin M (IgM) antibodies in the sural nerve is a key feature in anti-MAG neuropathy. Whether the blood-nerve barrier (BNB) is disrupted in anti-MAG neuropathy remains elusive.We aimed to evaluate the effect of sera from anti-MAG neuropathy at the molecular level using our in vitro human BNB model and observe the change of BNB endothelial cells in the sural nerve of anti-MAG neuropathy. METHODS Diluted sera from patients with anti-MAG neuropathy (n = 16), monoclonal gammopathies of undetermined significance (MGUS) neuropathy (n = 7), amyotrophic lateral sclerosis (ALS, n = 10), and healthy controls (HCs, n = 10) incubated with human BNB endothelial cells to identify the key molecule of BNB activation using RNA-seq and a high-content imaging system, and exposed with a BNB coculture model to evaluate small molecule/IgG/IgM/anti-MAG antibody permeability. RESULTS RNA-seq and the high-content imaging system showed the significant upregulation of tumor necrosis factor (TNF-α) and nuclear factor-kappa B (NF-κB) in BNB endothelial cells after exposure to sera from patients with anti-MAG neuropathy, whereas the serum TNF-α concentration was not changed among the MAG/MGUS/ALS/HC groups. Sera from patients with anti-MAG neuropathy did not increase 10-kDa dextran or IgG permeability but enhanced IgM and anti-MAG antibody permeability. Sural nerve biopsy specimens from patients with anti-MAG neuropathy showed higher TNF-α expression levels in BNB endothelial cells and preservation of the structural integrity of the tight junctions and the presence of more vesicles in BNB endothelial cells. Neutralization of TNF-α reduces IgM/anti-MAG antibody permeability. DISCUSSION Sera from individuals with anti-MAG neuropathy increased transcellular IgM/anti-MAG antibody permeability via autocrine TNF-α secretion and NF-κB signaling in the BNB.
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Affiliation(s)
| | - Fumitaka Shimizu
- From the Department of Neurology and Clinical Neuroscience (R.S., F.S., Y.S., Y.T., Michiaki Koga, T.K.), Yamaguchi University Graduate School of Medicine, Ube; Department of Neurology (Motoi Kuwahara, S.K.), Kindai University Faculty of Medicine, Osaka; Center for Gene Research (Y.M., K.W.), Yamaguchi University, Ube, Japan; and Japan Community Health Care Organization (S.K.).
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4
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Basta I, Delic N, Gunjic I, Arsenijevic Zdraljevic M, Kacar A, Bozovic I, Peric S. Chronic inflammatory demyelinating polyradiculoneuropathy: Diagnostic problems in clinical practice in Serbia. J Peripher Nerv Syst 2023. [PMID: 36738239 DOI: 10.1111/jns.12537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 01/18/2023] [Accepted: 02/01/2023] [Indexed: 02/05/2023]
Abstract
Making diagnosis of chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) is challenging since it can mimic a multitude of disorders, and is misdiagnosed in at least 50% of cases. We sought to determine the frequency of CIDP misdiagnosis in clinical practice in Serbia, to uncover CIDP mimics, and to identify factors that may aid in CIDP diagnosis. Our longitudinal retrospective cohort study included 86 eligible adult patients referred to the Neurology Clinic, University Clinical Centre of Serbia, with a diagnosis of CIDP. We also included 15 patients referred to us with different diagnoses that ended up having CIDP as their final diagnosis. Exactly half of patients referred as CIDP failed to meet the established diagnostic criteria (non-CIDP) and were given an alternative diagnosis at the first hospitalization. At the 1-year follow-up, the diagnosis was further revised in four subjects. Confirmed CIDP patients usually had their initial diagnosis based on the nerve conduction studies (NCS), a typical presentation with symmetrical involvement of all four limbs, as well as higher frequencies of elevated protein levels and albuminocytologic dissociation in the cerebrospinal fluid (CSF). CIDP patients also responded better to immune therapy. We found that 52% of the patients initially referred to our Clinic as CIDP were given other diagnoses after a 1-year follow-up. Out of all CIDP cases, 27% had been unrecognized prior to referral to our Center. Utilization of clear and objective indicators - conclusive NCS, improvement on therapy, and elevated CSF proteins may provide greater certainty in diagnosing CIDP.
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Affiliation(s)
- Ivana Basta
- University Clinical Center of Serbia, Neurology Clinic, Belgrade, Serbia.,Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Neda Delic
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Ilija Gunjic
- Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
| | | | - Aleksandra Kacar
- University Clinical Center of Serbia, Neurology Clinic, Belgrade, Serbia.,Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Ivo Bozovic
- University Clinical Center of Serbia, Neurology Clinic, Belgrade, Serbia
| | - Stojan Peric
- University Clinical Center of Serbia, Neurology Clinic, Belgrade, Serbia
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5
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Lewis RA, van Doorn PA, Sommer C. Tips in navigating the diagnostic complexities of chronic inflammatory demyelinating polyradiculoneuropathy. J Neurol Sci 2022; 443:120478. [PMID: 36368137 DOI: 10.1016/j.jns.2022.120478] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 09/29/2022] [Accepted: 10/23/2022] [Indexed: 11/06/2022]
Abstract
The 2021 guideline of the European Academy of Neurology/Peripheral Nerve Society on chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) includes important revisions to the previous 2010 guideline. This article highlights the new criteria and recommendations for the differential diagnosis of CIDP. In the revised guideline, the CIDP spectrum has been modified to include typical CIDP and four well-characterized CIDP variants, namely distal, multifocal/focal, motor and sensory CIDP, replacing the term 'atypical' CIDP. To improve the diagnosis of CIDP, the revised guideline attempts to improve the specificity of the diagnostic criteria for typical CIDP and the four CIDP variants. Specific clinical and electrodiagnostic (including both motor and sensory conduction) criteria are provided for typical CIDP and each of the CIDP variants. The levels of diagnostic certainty have been changed to CIDP and possible CIDP, with the removal of probable CIDP (due to the lack of difference in the accuracy of the electrodiagnostic criteria for probable CIDP) and definite CIDP (due to the lack of a gold standard for diagnosis). If the clinical and electrodiagnostic criteria allow only for a diagnosis of possible CIDP, cerebrospinal fluid analysis, nerve ultrasound, nerve magnetic resonance imaging, objective treatment response, and nerve biopsy can be used as supportive criteria to upgrade the diagnosis to CIDP. Although the revised guideline needs to be validated and its strengths and weaknesses assessed, using the guideline will likely improve the accuracy of diagnosis of CIDP and variants of CIDP, and aid in distinguishing CIDP from conditions with similar features.
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Affiliation(s)
| | - Pieter A van Doorn
- Department of Neurology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
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6
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Querol LA, Hartung HP, Lewis RA, van Doorn PA, Hammond TR, Atassi N, Alonso-Alonso M, Dalakas MC. The Role of the Complement System in Chronic Inflammatory Demyelinating Polyneuropathy: Implications for Complement-Targeted Therapies. Neurotherapeutics 2022; 19:864-873. [PMID: 35378684 PMCID: PMC9294101 DOI: 10.1007/s13311-022-01221-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2022] [Indexed: 01/01/2023] Open
Abstract
Chronic inflammatory demyelinating polyneuropathy (CIDP) is the most common, heterogeneous, immune-mediated neuropathy, characterized by predominant demyelination of motor and sensory nerves. CIDP follows a relapsing-remitting or a progressive course and causes substantial disability. The pathogenesis of CIDP involves a complex interplay of multiple aberrant immune responses, creating a pro-inflammatory environment, subsequently inflicting damage on the myelin sheath. Though the exact triggers are unclear, diverse immune mechanisms encompassing cellular and humoral pathways are implicated. The complement system appears to play a role in promoting macrophage-mediated demyelination. Complement deposition in sural nerve biopsies, as well as signs of increased complement activation in serum and CSF of patients with CIDP, suggest complement involvement in CIDP pathogenesis. Here, we present a comprehensive overview of the preclinical and clinical evidence supporting the potential role of the complement system in CIDP. This understanding furnishes a strong rationale for targeting the complement system to develop new therapies that could serve the unmet needs of patients affected by CIDP, particularly in those refractory to standard therapies.
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Affiliation(s)
- Luis A Querol
- Neuromuscular Diseases Unit, Department of Neurology, Hospital de La Santa Creu I Sant Pau, Barcelona, Spain
| | - Hans-Peter Hartung
- Department of Neurology, Heinrich Heine University, Düsseldorf, Germany
- Brain and Mind Center, University of Sydney, Sydney, Australia
- Department of Neurology, Medical University of Vienna, Vienna, Austria
- Department of Neurology, Palacky University Olomouc, Olomouc, Czech Republic
| | | | | | | | - Nazem Atassi
- Sanofi, Neurology Clinical Development, Cambridge, MA, USA
| | | | - Marinos C Dalakas
- Department of Neurology, Thomas Jefferson University Hospital, Philadelphia, PA, USA.
- Neuroimmunology National and Kapodistrian University of Athens Medical School, Athens, Greece.
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7
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Neilson LE, Hollen C, Hiller A, Wooliscroft L. Oligoclonal Bands in Multiple System Atrophy: Case Report and Proposed Mechanisms of Immunogenicity. Front Neurosci 2022; 16:852939. [PMID: 35295090 PMCID: PMC8919426 DOI: 10.3389/fnins.2022.852939] [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: 01/11/2022] [Accepted: 02/07/2022] [Indexed: 11/13/2022] Open
Abstract
Multiple System Atrophy (MSA) is a neurodegenerative disease with heterogeneous manifestations and is therefore difficult to diagnose definitively. Because of this, oftentimes an extensive workup for mimickers is undertaken. We herein report a case where the history and cerebrospinal fluid (CSF) findings of oligoclonal bands suggested an inflammatory disorder. Immunomodulatory therapy failed to ameliorate symptoms or alter the trajectory of continued physical decline, prompting re-visitation of the diagnosis. Oligoclonal bands, while generally viewed as specific to multiple sclerosis or other inflammatory conditions, may be seen in other disease processes. Therefore, this finding should not exclude consideration of neurodegenerative disease.
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Affiliation(s)
- Lee E Neilson
- Department of Neurology, Veterans Affairs Medical Center, Portland, OR, United States.,Department of Neurology, Oregon Health and Sciences University, Portland, OR, United States
| | - Christopher Hollen
- Department of Neurology, Veterans Affairs Medical Center, Portland, OR, United States.,Department of Neurology, Oregon Health and Sciences University, Portland, OR, United States
| | - Amie Hiller
- Department of Neurology, Veterans Affairs Medical Center, Portland, OR, United States.,Department of Neurology, Oregon Health and Sciences University, Portland, OR, United States
| | - Lindsey Wooliscroft
- Department of Neurology, Veterans Affairs Medical Center, Portland, OR, United States.,Department of Neurology, Oregon Health and Sciences University, Portland, OR, United States
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8
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Carta S, Ferraro D, Ferrari S, Briani C, Mariotto S. Oligoclonal bands: clinical utility and interpretation cues. Crit Rev Clin Lab Sci 2022; 59:391-404. [DOI: 10.1080/10408363.2022.2039591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Sara Carta
- Department of Neurosciences, Biomedicine, and Movement Sciences, Neurology Unit, University of Verona, Verona, Italy
| | - Diana Ferraro
- Department of Biomedicine, Metabolic, and Neurosciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Sergio Ferrari
- Department of Neurosciences, Biomedicine, and Movement Sciences, Neurology Unit, University of Verona, Verona, Italy
| | - Chiara Briani
- Department of Neurosciences, University of Padova, Padova, Italy
| | - Sara Mariotto
- Department of Neurosciences, Biomedicine, and Movement Sciences, Neurology Unit, University of Verona, Verona, Italy
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9
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Tu Y, Gong X, Zhang Y, Peng J, Zhuo W, Yu X. The Correlation Among the Immunoglobulin G Synthesis Rate, IgG Index and Albumin Quotient in Guillain-Barré Syndrome and Chronic Inflammatory Demyelinating Polyradiculoneuropathy: A Retrospective Case–Control Study. Front Neurol 2021; 12:746186. [PMID: 34975712 PMCID: PMC8718703 DOI: 10.3389/fneur.2021.746186] [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: 07/23/2021] [Accepted: 11/29/2021] [Indexed: 11/13/2022] Open
Abstract
Background: The immunoglobulin G synthesis rate (IgG SR) and immunoglobulin G (IgG) index are indicators of abnormal intrathecal humoural immune responses, and the albumin quotient (QALB) is an indicator used to evaluate the completeness of the blood-cerebrospinal fluid barrier (BCB). No systematic reports regarding differences in Guillain-Barré syndrome (GBS) and chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) are available. We assessed differences in the IgG SR, IgG index and QALB between GBS and CIDP patients in a Chinese cohort. Methods: A total of 234 patients were retrospectively enrolled in this study, and 167 clinically confirmed GBS and CIDP patients were selected. Meanwhile, 67 non-GBS and non-CIDP patients requiring cerebrospinal fluid (CSF) examination were enrolled as the control group. The IgG SR, IgG index and QALB were calculated using formulas. The relevant clinical data were subjected to statistical analysis. Results: Among the GBS and CIDP study groups and the control group, the QALB had the highest positive rate (80.00%) in the CIDP group (P < 0.01). The QALB stratification analysis showed that the ranges of 10 < QALB ≤ 30 were dominant in the GBS and CIDP groups, and the positive rate of CIDP was higher than that of GBS. Furthermore, a QALB ≤ 7 was dominant in the control group, and a QALB > 30 was dominant in the CIDP group. In receiver operating characteristic (ROC) curve analysis with the CIDP group as the trial group and the GBS group as the control group, the differences in the QALB were statistically significant (P < 0.01). To achieve a high specificity of 98~99%, the diagnostic cut-off value for the QALB was above 57.37 (sensitivity: 9.33%) or below 0.60 (sensitivity: 4.35%). Multivariate logistic regression analysis showed that the CIDP patients had a QALB higher than 57.37, and compared with that in the GBS patients, the difference in the QALB was statistically significant (P < 0.01). Conclusion: QALB elevation was associated with CIDP, while QALB values above 57.37 or below 0.60 had high specificity in differentiating between GBS and CIDP. In CIDP, the BCB is generally moderately to severely damaged; in GBS, the BCB is generally moderately damaged.
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Affiliation(s)
- Yu Tu
- Zhuhai People's Hospital (Zhuhai Hospital Affiliated With Jinan University), Jinan University, Zhuhai, China
| | - Xuan Gong
- Zhuhai People's Hospital (Zhuhai Hospital Affiliated With Jinan University), Jinan University, Zhuhai, China
| | - Yuanyuan Zhang
- Zhuhai People's Hospital (Zhuhai Hospital Affiliated With Jinan University), Jinan University, Zhuhai, China
| | - Jiewei Peng
- Zhuhai People's Hospital (Zhuhai Hospital Affiliated With Jinan University), Jinan University, Zhuhai, China
| | - Wenyan Zhuo
- Zhuhai People's Hospital (Zhuhai Hospital Affiliated With Jinan University), Jinan University, Zhuhai, China
| | - Xueying Yu
- Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- *Correspondence: Xueying Yu
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10
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Vegezzi E, Gastaldi M, Cortese A. Towards a standardised analysis of CSF in inflammatory neuropathies. J Neurol Neurosurg Psychiatry 2021; 92:916. [PMID: 33990384 DOI: 10.1136/jnnp-2021-326418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/14/2021] [Accepted: 04/17/2021] [Indexed: 11/04/2022]
Affiliation(s)
- Elisa Vegezzi
- IRCCS Mondino Foundation, Pavia, Italy.,Department of Brain and Behavioural Sciences, University of Pavia, Pavia, Italy
| | | | - Andrea Cortese
- Department of Brain and Behavioural Sciences, University of Pavia, Pavia, Italy .,Department of Neuromuscular Diseases, UCL Institute of Neurology, London, UK
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