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Inan B, Bekircan-Kurt CE, Demirci M, Erdem-Ozdamar S, Tan E. Differentiating recurrent Guillain-Barre syndrome and acute-onset chronic inflammatory polyneuropathy: literature review. Acta Neurol Belg 2024; 124:1467-1475. [PMID: 38664341 DOI: 10.1007/s13760-024-02557-2] [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: 12/06/2023] [Accepted: 04/07/2024] [Indexed: 12/05/2024]
Abstract
Guillain-Barre syndrome (GBS) is an acute-onset immune-mediated polyneuropathy characterized by ascending symmetrical muscle weakness, diminished reflexes, and sensory symptoms. While GBS typically follows a monophasic course, some patients experience treatment-related fluctuations or recurrences, posing diagnostic challenges in distinguishing GBS from acute-onset chronic inflammatory polyneuropathy (A-CIDP). A-CIDP, may present acutely, simulating GBS, with a nadir in less than 8 weeks, subsequently evolving into a chronic or relapsing course. The distinction between recurrent GBS and A-CIDP is crucial, as A-CIDP necessitates long-term immunosuppression. A PubMed search was conducted using the search terms 'recurrent Guillain Barre syndrome' and 'acute onset CIDP' focusing on studies in the English language, published between January 1, 2004 and April 30, 2023. Overlapping clinical features, particularly in the early stages, complicate differentiation between recurrent GBS and CIDP. Electrophysiological studies, ultrasonography, and immunological markers have been explored for discrimination; however, definitive criteria for differentiation remain elusive. Recent follow-up studies have further blurred the boundaries between recurrent GBS and A-CIDP, suggesting the persistence of underlying immune processes even in GBS patients without clinical deterioration. This emphasizes the necessity of reevaluating diagnostic criteria and treatment strategies. In conclusion, distinguishing recurrent GBS from A-CIDP remains an ongoing challenge. Existing evidence questions the categorization of recurrent GBS as a distinct entity, challenging its very existence. Continued research is necessary to refine diagnostic criteria and deepen our understanding of these conditions, ultimately advancing patient care. This review delves into the intricacies of recurrent GBS and A-CIDP differentiation and highlights the need for a reevaluation of the recurrent GBS concept.
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Affiliation(s)
- Berin Inan
- Department of Neurology, Faculty of Medicine, Hacettepe University, Ankara, Turkey.
- Department of Neurology, Gulhane Faculty of Medicine, University of Health Sciences, Ankara, Turkey.
| | | | | | - Sevim Erdem-Ozdamar
- Department of Neurology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Ersin Tan
- Department of Neurology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
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Sarubbi A, Frasca L, Longo F, Sarubbi D, Suriano I, Catamerò A, Sposato LC, Marziali V, Crucitti P. Guillain-Barré Syndrome Following Lung Adenocarcinoma Surgery: A Case Report and Literature Review. AMERICAN JOURNAL OF CASE REPORTS 2024; 25:e944035. [PMID: 38954599 PMCID: PMC11333013 DOI: 10.12659/ajcr.944035] [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: 02/03/2024] [Revised: 05/20/2024] [Accepted: 04/11/2024] [Indexed: 07/04/2024]
Abstract
BACKGROUND Guillain-Barre syndrome (GBS) is a rare immune-mediated peripheral nerve disorder. Among non-infectious factors, surgery has been identified as a potential trigger of the disease. This report presents the case of a 74-year-old man who developed GBS 15 days after a right lower lobectomy for lung adenocarcinoma. CASE REPORT We present a case of a patient who was a former smoker who underwent uniportal video-assisted (U-VATS) right lower lobectomy for localized lung adenocarcinoma. Fifteen days after surgery, he exhibited bilateral lower-limb weakness, widespread paresthesia, and postural instability. Comprehensive diagnostic workup, including clinical assessment, serological tests, cerebrospinal fluid (CSF) analysis, and nerve conduction studies (NCS), confirmed the diagnosis. Notably, CSF analysis revealed albumin-cytological dissociation, with albumin 453.2 mg/L, protein 757 mg/L, glucose 67 mg/dl, 3 white blood cells (WBC)/uL, and polymorphonucleates (PMN) 33%. NCS demonstrated motor and sensory abnormalities. Prompt administration of intravenous immunoglobulins (IVIG) 2 g/kg daily for 5 days resulted in complete recovery within 3 months. CONCLUSIONS This case emphasizes the importance of prompt recognition and management of GBS as a postoperative complication. Neurological examination, neuroimaging, and electrophysiological studies are essential for accurate diagnosis. IVIG therapy remains a cornerstone in GBS management, with favorable outcomes observed in this case. Enhanced awareness among clinicians about the potential association between surgery and GBS is vital to prevent more serious complications and ensure optimal patient management. Further research is crucial to determine the precise pathogenesis and mechanisms of GBS following lung surgery.
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Affiliation(s)
- Antonio Sarubbi
- Department of Thoracic Surgery, Campus Bio-Medico University Polyclinic Foundation, Rome, Italy
- Department of Medicine and Surgery, Campus Bio-Medico University of Rome, Rome, Italy
| | - Luca Frasca
- Department of Thoracic Surgery, Campus Bio-Medico University Polyclinic Foundation, Rome, Italy
- Department of Microbiology, Immunology, Infectious Diseases, and Transplants (MIMIT), Tor Vergata University of Rome, Rome, Italy
| | - Filippo Longo
- Department of Thoracic Surgery, Campus Bio-Medico University Polyclinic Foundation, Rome, Italy
| | - Domenico Sarubbi
- Operative Research Unit of Anesthesia and Intensive Care, Campus Bio-Medico University Polyclinic Foundation, Rome, Italy
| | - Ilaria Suriano
- Department of Thoracic Surgery, Campus Bio-Medico University Polyclinic Foundation, Rome, Italy
| | - Alberto Catamerò
- Department of Thoracic Surgery, Campus Bio-Medico University Polyclinic Foundation, Rome, Italy
| | - Luciano Cialì Sposato
- Department of Thoracic Surgery, Campus Bio-Medico University Polyclinic Foundation, Rome, Italy
- Department of Thoracic Surgery, Tor Vergata University of Rome, Rome, Italy
| | - Valentina Marziali
- Department of Thoracic Surgery, Tor Vergata University of Rome, Rome, Italy
| | - Pierfilippo Crucitti
- Department of Thoracic Surgery, Campus Bio-Medico University Polyclinic Foundation, Rome, Italy
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Valaparla VL, Rane SP, Patel C, Li X. Guillain-Barre syndrome and link with COVID-19 infection and vaccination: a review of literature. Front Neurol 2024; 15:1396642. [PMID: 38899056 PMCID: PMC11185933 DOI: 10.3389/fneur.2024.1396642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 05/20/2024] [Indexed: 06/21/2024] Open
Abstract
Background Guillain-Barré syndrome (GBS) is an autoimmune disease associated with significant morbidity. A wide variety of infectious and non-infectious triggers have been identified to be associated with GBS. COVID-19 has gained attention in recent years for its role in GBS pathogenesis. Our study aims to review the literature on GBS and its epidemiological and pathophysiological association with COVID-19. Description Recent literature on GBS associated with COVID-19 infections, such as case reports, case series, systematic reviews, and large-scale epidemiological studies, were reviewed. We also reviewed studies that included vaccines against COVID-19 in association with GBS. Studies that focused on understanding the pathobiology of GBS and its association with infectious agents including COVID-19 were reviewed. Conclusion Despite a lack of consensus, GBS is strongly associated with COVID-19 infection. The exact pathophysiological mechanism regarding COVID-19 as a causative agent of GBS is unknown. Mechanisms, such as the proinflammatory state, triggering of autoimmunity, and direct viral invasion, are postulated and remain to be investigated. Adenovirus vector vaccines are most likely associated with GBS, and the consensual reports clearly suggest mRNA vaccines are associated with low risk and may be protective against GBS by reducing the risk of COVID-19 infection.
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Affiliation(s)
| | | | | | - Xiangping Li
- University of Texas Medical Branch at Galveston, Galveston, TX, United States
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Li X, Zhang C. Guillain-Barré syndrome after surgery: a literature review. Front Neurol 2024; 15:1368706. [PMID: 38638310 PMCID: PMC11024248 DOI: 10.3389/fneur.2024.1368706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 02/26/2024] [Indexed: 04/20/2024] Open
Abstract
Guillain-Barré syndrome (GBS) is a rare postoperative complication that is sometimes characterized by serious motor weakness and prolonged weaning from mechanical ventilation. Although the exact nature of the relationship between GBS and the surgical procedure is still unclear, there is a clear increased incidence of GBS in post-surgical patients compared to non-surgical patients. GBS after surgery is unique in several ways. The course of post-surgical GBS unfolds more rapidly than in other situations where GBS develops, the condition is often more severe, and respiratory muscles are more commonly involved. Prompt diagnosis and appropriate treatment are essential, and the condition can worsen if treated inappropriately. Postoperative sedation, intubation, and restraint use make the diagnosis of GBS difficult, as the onset of symptoms of weakness or numbness in those contexts are not obvious. GBS is often misdiagnosed, being attributed to other postoperative complications, and subsequently mishandled. The lack of relevant information further obscures the clinical picture. We sought to better understand post-surgical GBS by performing an analysis of the relevant literature, focusing on clearly documenting the clinical characteristics, diagnosis, and management of GBS that emerges following surgery. We underscore the importance of physicians being aware of the possibility of GBS after major surgery and of performing a variety of laboratory clinical investigations early on in suspected cases.
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Affiliation(s)
| | - Chao Zhang
- Department of Neurology and Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
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Liu S, Zhang WW, Jia L, Zhang HL. Guillain-Barré syndrome: immunopathogenesis and therapeutic targets. Expert Opin Ther Targets 2024; 28:131-143. [PMID: 38470316 DOI: 10.1080/14728222.2024.2330435] [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: 09/17/2023] [Accepted: 03/10/2024] [Indexed: 03/13/2024]
Abstract
INTRODUCTION Guillain-Barré syndrome (GBS) is a group of acute immune-mediated disorders in the peripheral nervous system. Both infectious and noninfectious factors are associated with GBS, which may act as triggers of autoimmune responses leading to neural damage and dysfunction. AREAS COVERED Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and its vaccines as well as flaviviruses have been associated with GBS, although a robust conclusion has yet to be reached. Immunomodulatory treatments, including intravenous immunoglobulins (IVIg) and plasma exchange (PE), have long been the first-line therapies for GBS. Depending on GBS subtype and severity at initial presentation, the efficacy of IVIg and PE can be variable. Several new therapies showing benefits to experimental animals merit further investigation before translation into clinical practice. We review the state-of-the-art knowledge on the immunopathogenesis of GBS in the context of coronavirus disease 2019 (COVID-19). Immunomodulatory therapies in GBS, including IVIg, PE, corticosteroids, and potential therapies, are summarized. EXPERT OPINION The association with SARS-CoV-2 remains uncertain, with geographical differences that are difficult to explain. Evidence and guidelines are lacking for the decision-making of initiating immunomodulatory therapies in mildly affected patients or patients with regional subtypes of GBS.
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Affiliation(s)
- Shan Liu
- Department of Nuclear Medicine, Second Hospital of Jilin University, Changchun, China
| | - Wei Wei Zhang
- Department of Neurology, First Hospital of Jilin University, Jilin University, Changchun, China
| | - Linpei Jia
- Department of Nephrology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Hong-Liang Zhang
- Department of Life Sciences, National Natural Science Foundation of China, Beijing, China
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Liu J, Tang F, Chen X, Li Z. Guillain-Barré Syndrome with Incomplete Oculomotor Nerve Palsy after Traumatic Brain Injury: Case Report and Literature Review. Brain Sci 2023; 13:brainsci13040527. [PMID: 37190493 DOI: 10.3390/brainsci13040527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 03/07/2023] [Accepted: 03/21/2023] [Indexed: 05/17/2023] Open
Abstract
Guillain-Barré syndrome (GBS) is a severe peripheral neuroinflammatory demyelinating disease characterized by symmetrical progressive limb weakness, which can be accompanied by cranial nerve and sensory disturbances. There is usually a history of bacterial or viral infection prior to onset. GBS is rarely seen after traumatic brain injury (TBI). We report a case of a 66-year-old male patient who presented with dilated pupils, followed by respiratory failure and symmetrical quadriplegia during a conservative treatment for TBI. He was eventually diagnosed with GBS and was treated with intravenous immunoglobulin, followed by rehabilitation therapy with a good recovery. We summarize previous similar cases and analyze possible causes. It is suggested that the possibility of GBS should be considered when unexplained symptoms occurred in patients with TBI, such as respiratory failure, dilated pupils, and limb weakness.
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Affiliation(s)
- Jinsheng Liu
- Department of Neurosurgery, Zhongnan Hospital, Wuhan University, Wuhan 430062, China
| | - Feng Tang
- Department of Neurosurgery, Zhongnan Hospital, Wuhan University, Wuhan 430062, China
| | - Xinjun Chen
- Department of Neurosurgery, Zhongnan Hospital, Wuhan University, Wuhan 430062, China
| | - Zhiqiang Li
- Department of Neurosurgery, Zhongnan Hospital, Wuhan University, Wuhan 430062, China
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McCombe PA, Hardy TA, Nona RJ, Greer JM. Sex differences in Guillain Barré syndrome, chronic inflammatory demyelinating polyradiculoneuropathy and experimental autoimmune neuritis. Front Immunol 2022; 13:1038411. [PMID: 36569912 PMCID: PMC9780466 DOI: 10.3389/fimmu.2022.1038411] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 11/24/2022] [Indexed: 12/13/2022] Open
Abstract
Guillain Barré syndrome (GBS) and its variants, and chronic inflammatory demyelinating polyradiculoneuropathy (CIDP and its variants, are regarded as immune mediated neuropathies. Unlike in many autoimmune disorders, GBS and CIDP are more common in males than females. Sex is not a clear predictor of outcome. Experimental autoimmune neuritis (EAN) is an animal model of these diseases, but there are no studies of the effects of sex in EAN. The pathogenesis of GBS and CIDP involves immune response to non-protein antigens, antigen presentation through non-conventional T cells and, in CIDP with nodopathy, IgG4 antibody responses to antigens. There are some reported sex differences in some of these elements of the immune system and we speculate that these sex differences could contribute to the male predominance of these diseases, and suggest that sex differences in peripheral nerves is a topic worthy of further study.
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Affiliation(s)
- Pamela A. McCombe
- Centre for Clinical Research, The University of Queensland, Brisbane, QLD, Australia
| | - Todd A. Hardy
- Department of Neurology, Concord Hospital, University of Sydney, Sydney, NSW, Australia
- Brain & Mind Centre, University of Sydney, Sydney, NSW, Australia
| | - Robert J. Nona
- Centre for Clinical Research, The University of Queensland, Brisbane, QLD, Australia
| | - Judith M. Greer
- Centre for Clinical Research, The University of Queensland, Brisbane, QLD, Australia
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Zhai Q, Guo C, Xue F, Qiang J, Li C, Guo L. Guillain-Barré Syndrome in Northern China: A Retrospective Analysis of 294 Patients from 2015 to 2020. J Clin Med 2022; 11:jcm11216323. [PMID: 36362550 PMCID: PMC9658830 DOI: 10.3390/jcm11216323] [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: 08/27/2022] [Revised: 09/26/2022] [Accepted: 10/24/2022] [Indexed: 11/16/2022] Open
Abstract
Objectives: Acute motor axonal neuropathy (AMAN) was first reported to be the main subtype of Guillain−Barré syndrome (GBS) in northern China in the 1990s. About 30 years has passed, and it is unknown whether the disease spectrum has changed over time in northern China. We aimed to study the epidemiological, clinical, and electrophysiological features of GBS in northern China in recent years. Methods: We retrospectively analyzed the medical records of GBS patients admitted to the Second Hospital of Hebei Medical University in northern China from 2015 to 2020. Results: A total of 294 patients with GBS were enrolled, with median age 53 years and 60.5% of participants being male, and a high incidence in summer and autumn. AMAN was still the predominant subtype in northern China (40.1%). The AMAN patients had shorter time to nadir, longer hospitalization time, and a more severe HFGS score at discharge than acute inflammatory demyelinating polyneuropathies (AIDP) (p < 0.05). With SPSS multivariable logistic regression analysis, we found the GBS disability score (at admission), dysphagia, and dysautonomia were independent risk factors for GBS patients requiring MV (p < 0.05). In comparison with other regions, the proportion of AMAN in northern China (40.1%) was higher than in eastern (35%) and southern (19%) China. Conclusions: AMAN is still the predominant subtype in northern China after 30 years, but there have been changes over time in the GBS spectrum since the 1990s. There are regional differences in GBS in China.
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Affiliation(s)
- Qiongqiong Zhai
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Cheng Guo
- Department of Pediatrics, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, China
| | - Fang Xue
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Jing Qiang
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Chaonan Li
- Department of Pediatrics, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Li Guo
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
- Correspondence:
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Guillain-Barré Syndrome with Respiratory Failure following Spine Surgery for Incomplete Cervical Cord Injury: A Case Report and Literature Review. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:medicina58081063. [PMID: 36013530 PMCID: PMC9415430 DOI: 10.3390/medicina58081063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 07/26/2022] [Accepted: 08/03/2022] [Indexed: 11/17/2022]
Abstract
Guillain-Barré syndrome (GBS) often develops after a respiratory or gastrointestinal infection. A few cases have been reported on GBS following elective spinal surgery not preceded by an infectious disease. In patients with underlying upper motor neuron disease such as a spinal cord injury, concurrent development of lower motor neuron diseases, such as GBS, could be overlooked. Here, we present an uncommon case of an 87-year-old man with GBS that had developed after an operation for a traumatic cervical spinal cord injury. After surgery, he showed weakness over all four limbs with paresthesia, but he was able to hold a standing position with minimal assistance. Unfortunately, his muscle strength over his four limbs gradually weakened from two to four weeks later, and he became almost completely paralyzed. Cerebrospinal fluid (CSF) studies revealed albuminocytologic dissociation. A nerve conduction study (NCS) indicated an acute axonal polyneuropathy superimposed on chronic sensorimotor polyneuropathy. Thus, the patient was diagnosed with GBS. However, the patient’s family declined immune-modulatory therapy due to personal reasons. The patient progressed into respiratory failure and remained ventilator-dependent before his death three years later. This case highlights the importance of taking GBS into account when postoperative weakness occurs in patients with spinal cord injury, and a worse prognosis if GBS is left untreated.
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Ni XX, Wang CL, Guo YQ, Liu ZF. Analysis of Clinical Symptoms of Guillain–Barré Syndrome Induced by Heat Stroke: Three Case Reports and Literature Review. Front Neurol 2022; 13:910596. [PMID: 35785343 PMCID: PMC9248030 DOI: 10.3389/fneur.2022.910596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 05/23/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundHeat stroke is a potentially fatal condition that is caused by elevated core temperature. Guillain–Barré syndrome (GBS) induced by heat stroke is extremely rare and has only been reported in few case reports. The purpose of this case study was to evaluate the clinical symptoms, neuroelectrophysiological and imageological features of GBS after heat stroke.MethodsWe reviewed our hospital records and previously published reports to find the cases of GBS after heat stroke. The clinical, imageological, and electrophysiological profiles, treatment and prognosis were presented and analyzed.ResultsWe retrieved three cases of GBS induced by heat stroke from our hospital, which presented as lesions on multiple cranial and peripheral nerves and albuminocytologic dissociation in the cerebrospinal fluid. All of these patients had disorders of consciousness at the early stage of heat stroke and a “pseudo-recovery period” after they recovered from coma after heat stroke. After immunoglobulin administration and immunoregulation therapy, these patients' neurological deficiencies were relieved significantly. But there are still disabilities and almost totally reliant on others.ConclusionsThe number of the cases of GBS induced by HS reported in this study has been the most in the recent 5 years. Clinicians should pay attention to patients with heat stroke with sustained coma and the sudden quadriplegia. Early, exact and timely diagnosis and treatment of GBS need to be performed, to accelerate recovery and improve prognosis.
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Affiliation(s)
- Xiao-xiao Ni
- Department of Hyperbaric Oxygen Medicine and Rehabilitation, General Hospital of Southern Theater Command of PLA, Guangzhou, China
| | - Cong-lin Wang
- Department of Critical Care Medicine, General Hospital of Southern Theater Command of PLA, Guangzhou, China
| | - Ye-qun Guo
- Department of Hyperbaric Oxygen Medicine and Rehabilitation, General Hospital of Southern Theater Command of PLA, Guangzhou, China
| | - Zhi-feng Liu
- Department of Critical Care Medicine, General Hospital of Southern Theater Command of PLA, Guangzhou, China
- *Correspondence: Zhi-feng Liu
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Latov N. Immune mechanisms, the role of complement, and related therapies in autoimmune neuropathies. Expert Rev Clin Immunol 2021; 17:1269-1281. [PMID: 34751638 DOI: 10.1080/1744666x.2021.2002147] [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] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Autoimmune neuropathies have diverse presentations and underlying immune mechanisms. Demonstration of efficacy of therapeutic agents that inhibit the complement cascade would confirm the role of complement activation. AREAS COVERED A review of the pathophysiology of the autoimmune neuropathies, to identify those that are likely to be complement mediated. EXPERT OPINION Complement mediated mechanisms are implicated in the acute and chronic neuropathies associated with IgG or IgM antibodies that target the Myelin Associated Glycoprotein (MAG) or gangliosides in the peripheral nerves. Antibody and complement mechanisms are also suspected in the Guillain-Barré syndrome and chronic inflammatory demyelinating neuropathy, given the therapeutic response to plasmapheresis or intravenous immunoglobulins, even in the absence of an identifiable target antigen. Complement is unlikely to play a role in paraneoplastic sensory neuropathy associated with antibodies to HU/ANNA-1 given its intracellular localization. In chronic demyelinating neuropathy with anti-nodal/paranodal CNTN1, NFS-155, and CASPR1 antibodies, myotonia with anti-VGKC LGI1 or CASPR2 antibodies, or autoimmune autonomic neuropathy with anti-gAChR antibodies, the response to complement inhibitory agents would depend on the extent to which the antibodies exert their effects through complement dependent or independent mechanisms. Complement is also likely to play a role in Sjogren's, vasculitic, and cryoglobulinemic neuropathies.
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Affiliation(s)
- Norman Latov
- Department of Neurology, Weill Cornell Medical College, New York, USA
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