1
|
Alobaidy A, Alsulaimi M, Alajmi A. Spectrum of neurological manifestations, existence of diabetes mellitus, and 5-year mortality and cancer association outcomes in a cohort of Omani patients with positive anti- GAD autoimmunity. Expert Rev Clin Immunol 2024:1-10. [PMID: 39167450 DOI: 10.1080/1744666x.2024.2395853] [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: 04/24/2024] [Revised: 07/08/2024] [Accepted: 08/01/2024] [Indexed: 08/23/2024]
Abstract
OBJECTIVES There is scarce data in the literature concerning the anti-GAD65 antibodies (GAD-Abs) autoimmunity in the Omani population. METHODS Retrospective cohort study included GAD-Abs positive patients (n = 444) presented to a tertiary referral center in Oman from January 2005 until January 2018, with a five-year follow-up to study the cancer association and mortality outcomes. RESULTS Out of 444 patients, 27 patients (6.1%) showed GAD-Abs related neurological disorders. Adult age group was significantly associated with more GAD-Abs related neurological manifestations compared to pediatric and adolescents age group (p = 0.045). There was no association between the presence or absence of neurological manifestations with diabetes mellitus nor the titer level of GAD-Abs. Refractory status epilepticus and stiff person syndrome were the main causes of death in patients with neurological manifestations over five years and none of them found to have associated cancer. CONCLUSION The GAD-Abs autoimmunity represents a spectrum of neurological manifestations with variable severity and outcome among Omanis with positive GAD-Abs testing. The results of this study will serve as a platform for future studies to address the impact of GAD-Abs autoimmunity on the morbidity, mortality and treatment efficacy in the Omani population.
Collapse
Affiliation(s)
- Ammar Alobaidy
- Department of Medicine- Neurology Unit, Sultan Qaboos University Hospital, Muscat, Oman
| | - Mulham Alsulaimi
- College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman
| | - Ameer Alajmi
- College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman
| |
Collapse
|
2
|
Wei M, Bannout F, Dastjerdi M, Phan C, Batarseh S, Guo X, Baker N. Immunotherapy in a case of low titre GAD65 antibody-associated spectrum neurological disorders. BMJ Case Rep 2024; 17:e260503. [PMID: 38871638 DOI: 10.1136/bcr-2024-260503] [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: 06/15/2024] Open
Abstract
We present a rare case of low titre GAD65 antibody-associated autoimmune encephalitis and status epilepticus in a young woman. She initially presented with left arm dystonic movements, contractures and status epilepticus. Due to the concern of autoimmune encephalitis and seizures, the patient received intravenous immunoglobulin empirically. After the detection of low serum GAD65 antibodies, the patient underwent immunomodulation therapy with significant improvement. This case demonstrated that in autoimmune encephalitis, it is important to monitor serum GAD65 antibodies levels and consider immunotherapy, despite mildly elevated serum levels. The patient's history of left arm dystonic movements without impaired awareness may have been due to limb dystonia, a presenting symptom of stiff person syndrome (SPS), despite SPS more commonly affecting axial muscles. This case further demonstrates that GAD65 antibody-related syndromes can manifest with different neurological phenotypes including co-occurrence of epilepsy with possible focal SPS despite low GAD65 antibodies titres.
Collapse
Affiliation(s)
- Miao Wei
- Neurology, Loma Linda University School of Medicine, Loma Linda, California, USA
| | - Firas Bannout
- Neurology, Loma Linda University School of Medicine, Loma Linda, California, USA
| | - Mohammad Dastjerdi
- Neurology, Loma Linda University School of Medicine, Loma Linda, California, USA
| | - Cattien Phan
- Neurology, Loma Linda University School of Medicine, Loma Linda, California, USA
| | - Sanad Batarseh
- Neurology, Loma Linda University School of Medicine, Loma Linda, California, USA
| | - Xiaofan Guo
- Neurology, Loma Linda University School of Medicine, Loma Linda, California, USA
| | - Nancy Baker
- Neurology, Loma Linda University School of Medicine, Loma Linda, California, USA
| |
Collapse
|
3
|
Wu S, Ding Y. Type 1 diabetes and the risk of epilepsy: A meta-analysis. J Diabetes Investig 2024; 15:364-373. [PMID: 38111326 PMCID: PMC10906018 DOI: 10.1111/jdi.14126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/08/2023] [Accepted: 11/23/2023] [Indexed: 12/20/2023] Open
Abstract
AIMS/INTRODUCTION An overrepresentation of epilepsy has been suggested in patients with type 1 diabetes (T1D). This meta-analysis was conducted to evaluate if type 1 diabetes is associated with a higher incidence of epilepsy. MATERIALS AND METHODS Longitudinal observational studies which are relevant to the purpose of the meta-analysis were screened and obtained by searching PubMed, Embase, and Web of Science databases. Random-effects models were used when significant heterogeneity was observed; otherwise, fixed-effects models were used. RESULTS Six observational studies involving 10 datasets of 8,001,899 participants were included, with six datasets including children and only one dataset including older people. Among them, 100,414 (1.25%) had type 1 diabetes. During the follow-up duration of 5.4-15.2 years (mean: 9.5 years), 98,644 cases (1.23%) of epilepsy were observed. Compared with participants with normoglycemia, those with type 1 diabetes were shown to have a higher incidence of epilepsy (risk ratio [RR]: 2.41, 95% confidence interval 1.69-3.44, P < 0.001; I2 = 95%) after adjustment of potential confounding variables including age and sex. Subgroup analysis showed consistent results in nested case-control and retrospective cohort studies, and in studies of children, non-elderly adult, and older participants (P for subgroup difference = 0.42 and 0.07). In addition, a stronger association of type 1 diabetes and epilepsy was suggested in studies with follow-up duration <10 years compared with those ≥10 years (RR: 3.34 vs 1.61, P for subgroup difference < 0.001). CONCLUSION Patients with type 1 diabetes may have a higher risk of epilepsy, which was mainly driven by datasets including children.
Collapse
Affiliation(s)
- Shuhui Wu
- Department of Neurology, Liaocheng People's Hospital, Liaocheng, Shandong Province, China
| | - Yanan Ding
- Department of Neurology, Liaocheng People's Hospital, Liaocheng, Shandong Province, China
| |
Collapse
|
4
|
Moss TT, Stavem K, Aandahl A, Gløersen AS, Grønberg BH, Neumann K, Vedeler CA, Lundqvist C. Case Report: Limbic encephalitis following treatment with durvalumab for small-cell lung cancer. Front Immunol 2023; 14:1278761. [PMID: 37908347 PMCID: PMC10613972 DOI: 10.3389/fimmu.2023.1278761] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 09/29/2023] [Indexed: 11/02/2023] Open
Abstract
Background Durvalumab is an immune checkpoint Inhibitor (ICIs) that is used in the treatment of malignant tumors, such as lung cancer and melanoma. ICIs are associated with immune-related adverse events including autoimmune encephalitis, although both paraneoplastic phenomena and ICI treatment may lead to autoimmunity. Case presentation We describe a 72-year old male patient with small-cell lung cancer, who during adjuvant treatment with Durvalumab developed GABABR1 and GAD65 antibodies and both diabetes and autoimmune limbic encephalitis. Because he was followed prospectively as part of a treatment study, we had access to repeated serum samples and cognitive assessments over time prior to developing encephalitis and diabetes, in addition to later assessments. A high titer of GABABR1 antibodies appeared early, while GAD65 antibodies appeared later with a lower titer in parallel with the development of diabetes. As he subsequently developed clinical signs of encephalitis, verified by EEG and brain MRI, he also had CSF GABABR1 antibodies. Durvalumab was discontinued and steroid treatment with subsequent plasmapheresis were started, resulting in reduction of both CSF and serum antibody levels. Clinical signs of encephalitis gradually improved. Conclusion This case illustrates the importance of being aware of possible serious autoimmune adverse reactions, including neurological syndromes such as encephalitis, when treating patients with high risk of para-neoplasia with ICIs. In addition, the case shows the development of autoantibodies over time.
Collapse
Affiliation(s)
- Thomas T. Moss
- Department of Neurology, Akershus University Hospital, Lørenskog, Norway
| | - Knut Stavem
- Pulmonary Department, Akershus University Hospital, Lørenskog, Norway
- Health Services Research Unit, Akershus University Hospital, Lørenskog, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Astrid Aandahl
- Department of Immunology and Transfusion Medicine, Akershus University Hospital, Lørenskog, Norway
| | - Anne S. Gløersen
- Pulmonary Department, Akershus University Hospital, Lørenskog, Norway
| | - Bjørn H. Grønberg
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
- Department of Oncology, St. Olavs Hospital, Trondheim, Norway
| | - Kirill Neumann
- Pulmonary Department, Akershus University Hospital, Lørenskog, Norway
| | - Christian A. Vedeler
- Department of Neurology, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Christofer Lundqvist
- Department of Neurology, Akershus University Hospital, Lørenskog, Norway
- Health Services Research Unit, Akershus University Hospital, Lørenskog, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| |
Collapse
|
5
|
Warren N, Freier K, Siskind D, O'Gorman C, Blum S, Gillis D, Scott JG. Anti-glutamic acid decarboxylase antibody screening in first-episode psychosis. Aust N Z J Psychiatry 2023; 57:603-612. [PMID: 35362325 DOI: 10.1177/00048674221089560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE The Royal Australian and New Zealand College of Psychiatrists recommends screening for a range of antibodies in first-episode psychosis, including anti-glutamic acid decarboxylase antibodies. Glutamic acid decarboxylase antibody-associated encephalitis occurs with high antibody titres and may cause cognitive dysfunction, seizures and psychiatric symptoms. However, glutamic acid decarboxylase antibodies are more frequently found in lower titre in association with other autoimmune disorders (such as diabetes mellitus type 1) and in healthy individuals. The utility of testing unselected populations of consumers with psychosis is unclear. The psychiatric manifestations of this disorder are also poorly described. METHODS First, systematic review of cohort and case-control studies that tested for IgG glutamic acid decarboxylase antibodies in psychiatric populations was conducted. Random-effects meta-analysis of odds ratio for antibody positivity in cases with psychosis and controls assessed prevalence. Second, literature review of all published cases and case series of glutamic acid decarboxylase antibody-associated limbic encephalitis was assessed for frequency and description of psychotic symptoms. RESULTS There were 17 studies, in which 2754 individuals with psychotic disorders were tested for glutamic acid decarboxylase IgG antibodies. Thirty-one consumers with psychosis (0.7%) had positive glutamic acid decarboxylase antibodies compared to 24 controls (1.0%), all at low titre and not fulfilling diagnostic criteria for autoimmune encephalitis. Meta-analysis found no significant difference in rates of glutamic acid decarboxylase antibody positivity (odds ratio = 1.8, 95% confidence interval: [0.90, 3.63]). Literature review found 321 cases of glutamic acid decarboxylase antibody-associated limbic encephalitis, with psychosis in 15 (4.3%) cases. Clinical screening would have identified all cases that presented to psychiatric services. CONCLUSION Glutamic acid decarboxylase antibodies were uncommon in consumers with psychosis, with no significant difference in prevalence from controls and no cases of encephalitis identified. In cases with established glutamic acid decarboxylase antibody-associated limbic encephalitis, psychotic symptoms were uncommon and identifiable by clinical assessment. Targeted antibody testing guidelines should be further considered.
Collapse
Affiliation(s)
- Nicola Warren
- School of Medicine, The University of Queensland, Brisbane, QLD, Australia
- Metro South Addiction and Mental Health Service, Brisbane, QLD, Australia
| | - Karen Freier
- Metro South Addiction and Mental Health Service, Brisbane, QLD, Australia
| | - Dan Siskind
- School of Medicine, The University of Queensland, Brisbane, QLD, Australia
- Metro South Addiction and Mental Health Service, Brisbane, QLD, Australia
| | - Cullen O'Gorman
- School of Medicine, The University of Queensland, Brisbane, QLD, Australia
- Department of Neurology, The Princess Alexandra Hospital, Brisbane, QLD, Australia
- Mater Centre for Clinical Neurosciences, Mater Hospital, Brisbane, QLD, Australia
| | - Stefan Blum
- School of Medicine, The University of Queensland, Brisbane, QLD, Australia
- Department of Neurology, The Princess Alexandra Hospital, Brisbane, QLD, Australia
- Mater Centre for Clinical Neurosciences, Mater Hospital, Brisbane, QLD, Australia
| | - David Gillis
- Pathology Queensland Central Laboratory, Division of Immunology, Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia
| | - James G Scott
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
- Metro North Mental Health Service, Brisbane, QLD, Australia
- Queensland Centre for Mental Health Research, Brisbane, QLD, Australia
| |
Collapse
|
6
|
Cecchin A, Reynolds C, Ali S, Hissaria P. Evaluation of glutamic acid decarboxylase (GAD) 65 antibody detection methods for neurological and diabetic investigation in an Australian diagnostic laboratory. Pathology 2023; 55:538-542. [PMID: 37037719 DOI: 10.1016/j.pathol.2023.01.010] [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: 06/21/2022] [Revised: 12/23/2022] [Accepted: 01/14/2023] [Indexed: 04/12/2023]
Abstract
The role of anti-glutamic acid decarboxylase (GAD) 65 autoantibodies in autoimmune neurological conditions is evolving, but testing recommendations remain unchanged in Australia with GAD enzyme-linked immunosorbent assay (ELISA) and immunoblot as the only two Therapeutic Goods Administration approved testing methods available in Australia. Common practice is for use of ELISA in diagnosis of type 1 diabetes mellitus (T1DM) and use of immunoblot for diagnosis of GAD65-associated neurological disease. We observed a cohort of patients with negative immunoblot results and positive ELISA in the context of GAD-associated neurological disease without T1DM. In the absence of robust consensus guidelines on preferred testing modalities, we sought to determine if ELISA could have a superior role in the diagnosis of GAD-associated neurological disease when compared to immunoblot in this paper. We tested for anti-GAD65 autoantibodies on 55 patient samples, 40 samples requested for neurological disease and 15 type 1 diabetes samples with detectable anti-GAD65, using two testing platforms: Euroimmun anti-GAD enzyme-linked immunosorbent assay (ELISA) and. Euroimmun EuroLine immunoblot for paraneoplastic neurologic syndromes. These results were correlated against the clinical scenario. Positive ELISA results had a sensitivity of 100% and specificity of 91% for GAD65-related neurological disease. Immunoblot showed sensitivity of 43% and specificity of 76% for GAD65-related neurological disease. ELISA proved more sensitive and specific for GAD65-related neurological disease compared to immunoblot, raising questions about the role of this testing modality in neurological disease. We propose that ELISA should be used as a sole diagnostic method for all GAD65 antibody-related neurological disease over immunoblot. The presence of anti-GAD65 antibody on immunoblot is of doubtful clinical significance.
Collapse
Affiliation(s)
| | - Claire Reynolds
- SA Pathology, Adelaide, SA, Australia; Royal Adelaide Hospital, Adelaide, SA, Australia
| | - Syed Ali
- SA Pathology, Adelaide, SA, Australia; Royal Adelaide Hospital, Adelaide, SA, Australia
| | - Pravin Hissaria
- SA Pathology, Adelaide, SA, Australia; Royal Adelaide Hospital, Adelaide, SA, Australia; University of Adelaide, Adelaide, SA, Australia.
| |
Collapse
|
7
|
Aryal R, Shrestha S, Homagain S, Tiwari SB, Ojha R. Intravenous immunoglobulin in the management and outcome of Stiff‐Person syndrome: A systematic review. CLINICAL AND EXPERIMENTAL NEUROIMMUNOLOGY 2022; 13:302-315. [DOI: 10.1111/cen3.12713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 05/16/2022] [Indexed: 10/02/2024]
Abstract
AbstractBackgroundStiff Person Syndrome (SPS), a rare immune‐mediated neuromuscular disorder, is characterized by rigidity, stiffness, and intermittent spasms of axial and extremity muscles. Various immunotherapies including intravenous immunoglobulin (IVIG) have been used for this autoimmune condition. Here we aim to review the role of IVIG in the treatment of SPS along with its outcome.MethodsA systematic literature search of PubMed and Embase was conducted to identify the relevant published articles against the predefined criteria using suitable keywords combinations till September 20, 2021. Data were extracted to produce descriptive information of SPS patients on demographics, diagnostics, treatment with IVIG, and outcome.ResultsTwelve studies with 216 patients were included in the review and 63.89% of them had classical SPS. Glutamic acid decarboxylase (GAD) autoantibodies were present in 72.68% of the patients and 57.89% in whom electromyography (EMG) was performed had continuous motor activity. IVIG therapy was given to 95 patients in different regimens in various studies and varying scoring systems were used to assess the outcome, and 83.16% showed some form of improvement, 14.74% showed no improvement, while 2.10% worsened. None of the included studies mentioned an adverse effect of IVIG in the patients.ConclusionIVIG may benefit patients with SPS along with other medications. Owing to the rarity of the disease and insufficient studies on the assessment of immunotherapy in SPS, longitudinal studies with a sizable number of patients are required to clarify clinical course, treatment, and outcome in SPS with the use of IVIG.
Collapse
Affiliation(s)
- Roshan Aryal
- Maharajgunj Medical Campus Tribhuvan University Institute of Medicine Kathmandu Nepal
| | - Suraj Shrestha
- Maharajgunj Medical Campus Tribhuvan University Institute of Medicine Kathmandu Nepal
| | - Sushan Homagain
- Maharajgunj Medical Campus Tribhuvan University Institute of Medicine Kathmandu Nepal
| | - Sansar Babu Tiwari
- Department of Pathology Tribhuvan University Teaching Hospital Kathmandu Nepal
| | - Rajeev Ojha
- Department of Neurology Tribhuvan University Teaching Hospital Kathmandu Nepal
| |
Collapse
|
8
|
Badrinath Murthy D, Gutierrez Alvarez A, Vargas W, Litao MKS, Shah B. Auto-destruction of the thyroid gland and coexisting glutamic acid decarboxylase mediated neurological disease in an adolescent: an unusual presentation of autoimmunity. J Pediatr Endocrinol Metab 2021; 34:1329-1333. [PMID: 34162031 DOI: 10.1515/jpem-2020-0697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 03/31/2021] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Hashimoto's thyroiditis (HT) is characterized by lymphocytic thyroid infiltration. Gradual thyroid failure can occur due to thyroid cell apoptosis. Rarely neurological autoimmunity due to glutamic acid decarboxylase (GAD) antigen can co exist with HT. CASE PRESENTATION A seven-year-old male presented with tiredness, weight loss, frequent falls, tachycardia, firm thyromegaly, and abnormal gait. Biochemical markers and thyroid ultrasound (TUS) showed autoimmune hyperthyroidism. Methimazole (MMI) was started and continued for 2.2 years. MRI brain was normal and neurological symptoms resolved. At nine years, he became hypothyroid and levothyroxine (LT4) was started. Serial TUS showed progressive thyroid atrophy. At 14.8 years, he developed epilepsy and fourth cranial nerve palsy, and diagnosed with GAD-65 central nervous system disease. At 15.3 years, TUS showed complete atrophy of right lobe with involuting left lobe volume. CONCLUSIONS This is an unusual form of atrophic thyroiditis (AT) with coexisting neurological autoimmunity. GAD-65 CNS autoimmunity should be considered in children with AT presenting with neurological signs.
Collapse
Affiliation(s)
| | | | - Wendy Vargas
- Columbia University Medical Center, New York, USA
| | | | - Bina Shah
- Pediatric Endocrinology, NYU Langone Medical Center, New York, USA
| |
Collapse
|
9
|
Stiff-Eye Syndrome-Anti-GAD Ataxia Presenting with Isolated Ophthalmoplegia: A Case Report. Brain Sci 2021; 11:brainsci11070932. [PMID: 34356166 PMCID: PMC8304346 DOI: 10.3390/brainsci11070932] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/07/2021] [Accepted: 07/12/2021] [Indexed: 11/18/2022] Open
Abstract
Anti-GAD ataxia is one of the most common forms of immune-mediated cerebellar ataxias. Many neurological syndromes have been reported in association with anti-GAD. Ophthalmoparesis has been described in stiff person syndrome. We report a case of anti-GAD ataxia presenting initially with isolated ophthalmoplegia and showing complete resolution after immunotherapy. A 26-year-old male patient presented with ophthalmoparesis characterized by tonic upwards deviation of the right eye. In the following month, he developed progressive ataxia with anti-GAD titers of 1972 UI/mL. After treatment with methylprednisolone and immunoglobulin, there was complete resolution of symptoms and anti-GAD titers decreased. This is the first report of isolated ophthalmoparesis due to tonic eye deviation associated with anti-GAD antibodies without stiff-person syndrome. Tonic eye deviation has been reported in SPS, possibly secondary to continuous discharge in gaze holding neurons in the brainstem (similar to what occurs in spinal motor neurons). With growing evidence for ocular abnormalitites in SPS, anti-GAD associated neurological syndromes should be included in the differential diagnosis of isolated ophthalmoplegia.
Collapse
|
10
|
Lacruz Ballester L, Fernandez-Fournier M, Puertas Muñoz I, Rodriguez Fraga O, Lastras Fernandez-Escandon C, Rodriguez de Rivera Garrido FJ, Alba Suarez EM, Tallon Barranco A. Serum glutamate decarboxylase antibodies and neurological disorders: when to suspect their association? Neurol Sci 2021; 43:633-641. [PMID: 33914193 DOI: 10.1007/s10072-021-05281-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 04/21/2021] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To explore different neurological manifestations with suspicion of being associated to serum glutamate decarboxylase antibodies (GAD-Abs) in order to better characterize anti-GAD neurological syndromes. METHODS Observational retrospective study including all patients for whom GAD65-Abs titers in serum were requested by the Neurology Department at La Paz University Hospital between 2015 and 2019. GAD-Abs were measured by ELISA. Demographic data, neurological symptoms, comorbidity with diabetes mellitus (DM) or with another autoimmune disease, and GAD-Abs titers were studied. Stiff-person syndrome, ataxia, encephalitis, and epilepsy were considered typical anti-GAD neurological syndromes and were compared to other atypical manifestations. RESULTS A total of 173 patients (51.7% men, mean age 51.62) were included. A progressive increase in requests of serum GAD-Abs has occurred over the last 5 years, especially in patients with atypical neurological manifestations. GAD-Abs were found in the serum of 22 patients (12.7%); of those, 15 (68.18%) suffered a typical anti-GAD syndrome. Presence of DM or another organ-specific autoimmune disease was predictive of GAD-AB seropositivity (p < 0.001). 6.6% of requested patients with an atypical syndrome had GAD-Abs, but serum levels were significantly lower than those found in patients with a typical syndrome (706.67 vs 1430.23 UI/mL; Mann-Whitney U, p = 0.034), and were finally diagnosed with another neurological disease. CONCLUSION Serum GAD-Abs were infrequently found in patients with clinical phenotypes other than those classically described as anti-GAD disorders, and with very low titers. In typical anti-GAD syndromes, there is a high comorbidity with DM and with other autoimmune diseases, and high serum GAD-Abs levels are usually present.
Collapse
Affiliation(s)
- Laura Lacruz Ballester
- Department of Neurology, Hospital Universitario La Paz, Paseo de la Castellana, 261, 28046, Madrid, Spain.
| | - Mireya Fernandez-Fournier
- Department of Neurology, Hospital Universitario La Paz, Paseo de la Castellana, 261, 28046, Madrid, Spain
| | - Inmaculada Puertas Muñoz
- Department of Neurology, Hospital Universitario La Paz, Paseo de la Castellana, 261, 28046, Madrid, Spain
| | - Olaia Rodriguez Fraga
- Department of Clinical Analysis, Hospital Universitario La Paz, Paseo de la Castellana, 261, 28046, Madrid, Spain
| | | | | | - Elda Maria Alba Suarez
- Department of Neurology, Hospital Universitario La Paz, Paseo de la Castellana, 261, 28046, Madrid, Spain
| | - Antonio Tallon Barranco
- Department of Neurology, Hospital Universitario La Paz, Paseo de la Castellana, 261, 28046, Madrid, Spain
| |
Collapse
|
11
|
Hoffmann C, Zong S, Mané-Damas M, Stevens J, Malyavantham K, Küçükali Cİ, Tüzün E, De Hert M, van Beveren NJM, González-Vioque E, Arango C, Damoiseaux JGMC, Rutten BP, Molenaar PC, Losen M, Martinez-Martinez P. The search for an autoimmune origin of psychotic disorders: Prevalence of autoantibodies against hippocampus antigens, glutamic acid decarboxylase and nuclear antigens. Schizophr Res 2021; 228:462-471. [PMID: 33581586 DOI: 10.1016/j.schres.2020.12.038] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 12/12/2020] [Accepted: 12/30/2020] [Indexed: 12/31/2022]
Abstract
The etiology of psychotic disorders is still unknown, but in a subgroup of patients symptoms might be caused by an autoimmune reaction. In this study, we tested patterns of autoimmune reactivity against potentially novel hippocampal antigens. Serum of a cohort of 621 individuals with psychotic disorders and 257 controls were first tested for reactivity on neuropil of rat brain sections. Brain reactive sera (67 diseased, 27 healthy) were further tested for antibody binding to glutamic acid decarboxylase (GAD) isotype 65 and 67 by cell-based assay (CBA). A sub-cohort of 199 individuals with psychotic disorders and 152 controls was tested for the prevalence of anti-nuclear antibodies (ANA) on HEp2-substrate as well as for reactivity to double-stranded DNA, ribosomal P (RPP), and cardiolipin (CL). Incubation of rat brain with serum resulted in unidentified hippocampal binding patterns in both diseased and control groups. Upon screening with GAD CBA, one of these patterns was identified as GAD65 in one individual with schizophrenia and also in one healthy individual. Two diseased and two healthy individuals had low antibody levels targeting GAD67 by CBA. Antibody reactivity on HEp-2-substrate was increased in patients with schizoaffective disorder, but only in 3 patients did antibody testing hint at a possible diagnosis of systemic lupus erythematosus. Although reactivity of serum to intracellular antigens might be increased in patients with psychotic disorder, no specific targets could be identified. GAD antibodies are very rare and do not seem increased in serum of patients with psychotic disorders.
Collapse
Affiliation(s)
- Carolin Hoffmann
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, Maastricht, the Netherlands
| | - Shenghua Zong
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, Maastricht, the Netherlands
| | - Marina Mané-Damas
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, Maastricht, the Netherlands
| | - Jo Stevens
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, Maastricht, the Netherlands
| | | | - Cem İsmail Küçükali
- Department of Neuroscience, Institute for Experimental Medical Research (DETAE), Istanbul University, Istanbul, Turkey
| | - Erdem Tüzün
- Department of Neuroscience, Institute for Experimental Medical Research (DETAE), Istanbul University, Istanbul, Turkey
| | - Marc De Hert
- UPC KU Leuven, KU Leuven Department of Neurosciences, Belgium; Antwerp Health Law and Ethics Chair - AHLEC, University Antwerp, Antwerp, Belgium
| | - Nico J M van Beveren
- Department of Psychiatry, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Emiliano González-Vioque
- Child and Adolescent Psychiatry Department, Hospital General Universitario, Gregorio Marañón, School of Medicine, Universidad Complutense, IiSGM, CIBERSAM, Madrid, Spain
| | - Celso Arango
- Child and Adolescent Psychiatry Department, Hospital General Universitario, Gregorio Marañón, School of Medicine, Universidad Complutense, IiSGM, CIBERSAM, Madrid, Spain
| | - Jan G M C Damoiseaux
- Central Diagnostic Laboratory, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Bart P Rutten
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, Maastricht, the Netherlands
| | - Peter C Molenaar
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, Maastricht, the Netherlands
| | - Mario Losen
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, Maastricht, the Netherlands
| | - Pilar Martinez-Martinez
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, Maastricht, the Netherlands.
| |
Collapse
|
12
|
Crespo Burillo J, González Sánchez M, García Arguedas C, Mora Pueyo F, Millán J. Encephalopathy and adrenal insufficiency secondary to anti-glutamic acid decarboxylase antibodies. NEUROLOGÍA (ENGLISH EDITION) 2020. [DOI: 10.1016/j.nrleng.2019.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
|
13
|
Encefalopatía e insuficiencia suprarrenal secundaria a anticuerpos antiácido glutamil decarboxilasa. Neurologia 2020; 35:665-667. [DOI: 10.1016/j.nrl.2019.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 05/23/2019] [Accepted: 06/20/2019] [Indexed: 10/25/2022] Open
|
14
|
Psychiatric symptoms in anti glutamic acid decarboxylase associated limbic encephalitis in adults: a systematic review. Neurosci Biobehav Rev 2020; 119:128-137. [PMID: 33022299 DOI: 10.1016/j.neubiorev.2020.08.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 07/13/2020] [Accepted: 08/22/2020] [Indexed: 01/17/2023]
Abstract
Autoimmune Limbic Encephalitis (LE) is a relatively new category of immune-mediated diseases with a wide range of neuropsychiatric symptoms. LE associated with Glutamic Acid Decarboxylase (GAD) antibodies is difficult to diagnose due to its possible atypical presentation with neuropsychiatric and behavioral features. We performed a systematic review of literature and retrieved 21 cases of anti GAD-associated LE with neuropsychiatric signs. Median age at onset was 27 years with a female predominance (81.0 %) and median diagnostic delay of 6 months. Clinical presentation included typical LE symptoms such as anterograde amnesia (95.2 %) and temporal lobe or tonico-clonic seizures (95.2 %). Psychiatric symptoms were described in 61.9 % of patients, presenting as anxiety, depressive symptoms, apathy and behavioral changes. Extra-limbic symptoms were present in 14.3 % of patients. No neoplasia associated was found. Some patients had poor epileptic, cognitive and psychiatric outcomes requiring prolonged immunosuppressive treatment. The description of the neuropsychiatric spectrum of anti-GAD LE and its specificities aims to improve our understanding of this entity, and may lead to earlier diagnosis as well as better outcome.
Collapse
|
15
|
Phinney TA, Kinem DJ, Mayoglou LC, Laghari FJ. AntiGAD65 antibodies encephalitis with lateralized periodic discharges: A case report. J Neuroimmunol 2020; 347:577354. [DOI: 10.1016/j.jneuroim.2020.577354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 07/28/2020] [Accepted: 07/29/2020] [Indexed: 11/26/2022]
|
16
|
Dade M, Berzero G, Izquierdo C, Giry M, Benazra M, Delattre JY, Psimaras D, Alentorn A. Neurological Syndromes Associated with Anti-GAD Antibodies. Int J Mol Sci 2020; 21:E3701. [PMID: 32456344 PMCID: PMC7279468 DOI: 10.3390/ijms21103701] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/19/2020] [Accepted: 05/21/2020] [Indexed: 12/11/2022] Open
Abstract
Glutamic acid decarboxylase (GAD) is an intracellular enzyme whose physiologic function is the decarboxylation of glutamate to gamma-aminobutyric acid (GABA), the main inhibitory neurotransmitter within the central nervous system. GAD antibodies (Ab) have been associated with multiple neurological syndromes, including stiff-person syndrome, cerebellar ataxia, and limbic encephalitis, which are all considered to result from reduced GABAergic transmission. The pathogenic role of GAD Ab is still debated, and some evidence suggests that GAD autoimmunity might primarily be cell-mediated. Diagnosis relies on the detection of high titers of GAD Ab in serum and/or in the detection of GAD Ab in the cerebrospinal fluid. Due to the relative rarity of these syndromes, treatment schemes and predictors of response are poorly defined, highlighting the unmet need for multicentric prospective trials in this population. Here, we reviewed the main clinical characteristics of neurological syndromes associated with GAD Ab, focusing on pathophysiologic mechanisms.
Collapse
Affiliation(s)
- Maëlle Dade
- AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Service de Neurologie 2-Mazarin, 75013 Paris, France; (M.D.); (G.B.); (J.-Y.D.); (D.P.)
- Sorbonne Université, Inserm, CNRS, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, 75013 Paris, France; (M.G.); (M.B.)
| | - Giulia Berzero
- AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Service de Neurologie 2-Mazarin, 75013 Paris, France; (M.D.); (G.B.); (J.-Y.D.); (D.P.)
- Sorbonne Université, Inserm, CNRS, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, 75013 Paris, France; (M.G.); (M.B.)
- Neuroncology Unit, IRCCS Mondino Foundation, 27100 Pavia, Italy
| | - Cristina Izquierdo
- Department of Neuroscience, Hospital Universitari Germans Trias i Pujol, Universitat Autònoma de Barcelona, 08916 Badalona, Spain;
| | - Marine Giry
- Sorbonne Université, Inserm, CNRS, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, 75013 Paris, France; (M.G.); (M.B.)
| | - Marion Benazra
- Sorbonne Université, Inserm, CNRS, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, 75013 Paris, France; (M.G.); (M.B.)
| | - Jean-Yves Delattre
- AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Service de Neurologie 2-Mazarin, 75013 Paris, France; (M.D.); (G.B.); (J.-Y.D.); (D.P.)
- Sorbonne Université, Inserm, CNRS, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, 75013 Paris, France; (M.G.); (M.B.)
| | - Dimitri Psimaras
- AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Service de Neurologie 2-Mazarin, 75013 Paris, France; (M.D.); (G.B.); (J.-Y.D.); (D.P.)
- Sorbonne Université, Inserm, CNRS, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, 75013 Paris, France; (M.G.); (M.B.)
| | - Agusti Alentorn
- AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Service de Neurologie 2-Mazarin, 75013 Paris, France; (M.D.); (G.B.); (J.-Y.D.); (D.P.)
- Sorbonne Université, Inserm, CNRS, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, 75013 Paris, France; (M.G.); (M.B.)
| |
Collapse
|
17
|
Aguiar TS, Dantas JR, Cabral DB, Rêgo CCS, Zajdenverg L, Salles GF, Alves-Leon SV, Rodacki M, Lima MA. Association between high titers of glutamic acid decarboxylase antibody and epilepsy in patients with type 1 diabetes mellitus: A cross-sectional study. Seizure 2019; 71:318-321. [PMID: 31525611 DOI: 10.1016/j.seizure.2019.09.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 09/04/2019] [Accepted: 09/07/2019] [Indexed: 01/13/2023] Open
Abstract
PURPOSE Individuals with type 1 diabetes mellitus (T1D) are at higher risk of epilepsy. T1D is a progressive immune-mediated disease and the etiology of epilepsy remains unknown in most. Glutamic acid decarboxylase (GAD) catalyzes GABA formation. GABA-secreting neurons and pancreatic beta cells are the major cells expressing GAD. METHODS Cross-sectional study. Patients with T1D from a multiethnic population underwent GADA measurement to investigate possible association between T1D and epilepsy of unknown etiology. RESULTS T1D patients were analyzed (n = 375). Overall frequency of epilepsy was 5.9% (n = 22). Frequency of epilepsy of unknown etiology was 3.2% (n = 12). Of these, 8 (2.1%) had idiopathic generalized epilepsy (IGE) and 4 (1.1%) MRI-negative temporal lobe epilepsy (TLE). Patients with T1D and epilepsy of unknown etiology did not show differences in GADA frequency (83.3% vs 50%; p = 0.076); however, their titers were higher (106.9 ± 136.5 IU/mL; median 7; IQR 1.65-256 vs 10.2 ± 14.5 IU/ml; median 4.3; IQR 1.9-8.9; p = 0.019) compared to patients without epilepsy. Moreover, epilepsy of unknown etiology was associated with GADA titers ≥ 100 UI/mL [odds ratio (OR) 4.42, 95% CI 2.36-8.66]. CONCLUSION Epilepsy frequency was elevated in patients with T1D and multiethnic background. Presence of epilepsy of unknown etiology was associated with high titers of GADA in this population with long-standing T1D, which has different ethnic and genetic background compared to previous studies. Further prospective studies are required to identify if GADA presence or its persistence are directly responsible for epilepsy in individuals with T1D.
Collapse
Affiliation(s)
- Tiago S Aguiar
- Departamento de Neurologia, Hospital Universitário Clementino Fraga Filho HUCFF, Faculdade de Medicina, Universidade Federal do Rio de Janeiro UFRJ, Brazil.
| | - Joana R Dantas
- Departamento de Nutrologia e Diabetes, Hospital Universitário Clementino Fraga Filho HUCFF, Faculdade de Medicina, Universidade Federal do Rio de Janeiro UFRJ, Brazil
| | - Débora B Cabral
- Departamento de Nutrologia e Diabetes, Hospital Universitário Clementino Fraga Filho HUCFF, Faculdade de Medicina, Universidade Federal do Rio de Janeiro UFRJ, Brazil
| | - Cláudia Cecília S Rêgo
- Departamento de Neurologia, Hospital Universitário Clementino Fraga Filho HUCFF, Faculdade de Medicina, Universidade Federal do Rio de Janeiro UFRJ, Brazil; Departamento de Neurologia, Universidade Federal do Estado do Rio de Janeiro UNIRIO, Brazil
| | - Lenita Zajdenverg
- Departamento de Nutrologia e Diabetes, Hospital Universitário Clementino Fraga Filho HUCFF, Faculdade de Medicina, Universidade Federal do Rio de Janeiro UFRJ, Brazil
| | - Gil Fernando Salles
- Departamento de Clínica Médica, Hospital Universitário Clementino Fraga Filho HUCFF, Faculdade de Medicina, Universidade Federal do Rio de Janeiro UFRJ, Brazil
| | - Soniza V Alves-Leon
- Departamento de Neurologia, Hospital Universitário Clementino Fraga Filho HUCFF, Faculdade de Medicina, Universidade Federal do Rio de Janeiro UFRJ, Brazil; Departamento de Neurologia, Universidade Federal do Estado do Rio de Janeiro UNIRIO, Brazil
| | - Melanie Rodacki
- Departamento de Nutrologia e Diabetes, Hospital Universitário Clementino Fraga Filho HUCFF, Faculdade de Medicina, Universidade Federal do Rio de Janeiro UFRJ, Brazil
| | - Marco Antonio Lima
- Departamento de Neurologia, Hospital Universitário Clementino Fraga Filho HUCFF, Faculdade de Medicina, Universidade Federal do Rio de Janeiro UFRJ, Brazil
| |
Collapse
|
18
|
Di Giacomo R, Deleo F, Pastori C, Didato G, Andreetta F, Del Sole A, de Curtis M, Villani F. Predictive value of high titer of GAD65 antibodies in a case of limbic encephalitis. J Neuroimmunol 2019; 337:577063. [PMID: 31525619 DOI: 10.1016/j.jneuroim.2019.577063] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 08/27/2019] [Accepted: 09/09/2019] [Indexed: 12/18/2022]
Abstract
We report the case of a 42-year-old woman who presented with vertigo and migraine and rapidly developed cognitive decline and seizures. Both serum and cerebro-spinal fluid samples showed high titer of anti-glutamic acid decarboxylase (anti-GAD65) antibodies (998,881 IU/ml and 54,687 IU/ml respectively). Limbic encephalitis was diagnosed and high dose steroids treatment started. During one-year follow-up, without further immunomodulatory therapy, the patient became seizure free, and cognitive functions returned to normal. Serum anti-GAD65 antibodies titer decreased significantly but remained elevated (192,680 IU/ml). We discuss the prognostic and pathogenic value of high titer anti-GAD65 antibodies and its variations in a case of autoimmune limbic encephalitis.
Collapse
Affiliation(s)
- Roberta Di Giacomo
- Epilepsy Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy.
| | - Francesco Deleo
- Epilepsy Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy.
| | - Chiara Pastori
- Epilepsy Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy.
| | - Giuseppe Didato
- Epilepsy Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy.
| | - Francesca Andreetta
- UO Neurologia IV, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy.
| | - Angelo Del Sole
- Nuclear Medicine Unit, Department of Health Sciences, ASST Santi Paolo e Carlo, University of Milan, Italy.
| | - Marco de Curtis
- Epilepsy Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy.
| | - Flavio Villani
- Epilepsy Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy; Division of Clinical Neurophysiology, Policlinico IRCCS San Martino, Genova, Italy.
| |
Collapse
|
19
|
Blinder T, Lewerenz J. Cerebrospinal Fluid Findings in Patients With Autoimmune Encephalitis-A Systematic Analysis. Front Neurol 2019; 10:804. [PMID: 31404257 PMCID: PMC6670288 DOI: 10.3389/fneur.2019.00804] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 07/11/2019] [Indexed: 01/15/2023] Open
Abstract
Autoimmune encephalitides (AIE) comprise a group of inflammatory diseases of the central nervous system (CNS), which can be further characterized by the presence of different antineuronal antibodies. Recently, a clinical approach for diagnostic criteria for the suspected diagnosis of AIE as well as definitive AIE were proposed. These are intended to guide physicians when to order the antineuronal antibody testing and/or facilitate early diagnosis even prior to the availability of the specific disease-confirming test results to facilitate prompt treatment. These diagnostic criteria also include the results of basic cerebrospinal fluid (CSF) analysis. However, the different antibody-defined AIE subtypes might be highly distinct with regard to their immune pathophysiology, e.g., the pre-dominance of specific IgG subclasses, IgG1, or IgG4, or frequency of paraneoplastic compared to idiopathic origin. Thus, it is conceivable that the results of basic CSF analysis might also be very different. However, this has not been explored systematically. Here, we systematically reviewed the literature about the 10 most important AIE subtypes, AIE with antibodies against NMDA, AMPA, glycine, GABAA, and GABAB receptors as well as DPPX, CASPR2, LGI1, IgLON5, or glutamate decarboxylase (GAD), with respect to the reported basic CSF findings comprising CSF leukocyte count, total protein, and the presence of oligoclonal bands (OCB) restricted to the CSF as a sensitive measure for intrathecal IgG synthesis. Our results indicate that these basic CSF findings are profoundly different among the 10 different AIE subtypes. Whereas, AIEs with antibodies against NMDA, GABAB, and AMPA receptors as well as DPPX show rather frequent inflammatory CSF changes, in AIEs with either CASPR2, LGI1, GABAA, or glycine receptor antibodies CSF findings were mostly normal. Two subtypes, AIEs defined by either GAD, or IgLON5 antibodies, did not fit into this general pattern. In AIE with GAD antibodies, positive OCBs in the absence of other changes were typical, while the CSF in IgLON5 antibody-positive AIE was characterized by elevated protein.
Collapse
Affiliation(s)
| | - Jan Lewerenz
- Department of Neurology, Ulm University, Ulm, Germany
| |
Collapse
|
20
|
Vogrig A, Joubert B, André‐Obadia N, Gigli GL, Rheims S, Honnorat J. Seizure specificities in patients with antibody‐mediated autoimmune encephalitis. Epilepsia 2019; 60:1508-1525. [DOI: 10.1111/epi.16282] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 06/15/2019] [Accepted: 06/18/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Alberto Vogrig
- French Reference Center for Paraneoplastic Neurological Syndromes Hospital for Neurology and Neurosurgery Pierre Wertheimer Lyon University Hospital Lyon France
- SynatAc Team NeuroMyoGene InstituteINSERM U1217/CNRSUMR5310 Lyon France
- University Claude Bernard Lyon 1, University of Lyon Lyon France
- Clinical Neurology Unit Santa Maria della Misericordia University Hospital Udine Italy
| | - Bastien Joubert
- French Reference Center for Paraneoplastic Neurological Syndromes Hospital for Neurology and Neurosurgery Pierre Wertheimer Lyon University Hospital Lyon France
- SynatAc Team NeuroMyoGene InstituteINSERM U1217/CNRSUMR5310 Lyon France
- University Claude Bernard Lyon 1, University of Lyon Lyon France
| | - Nathalie André‐Obadia
- Department of Functional Neurology and Epileptology Hospital for Neurology and Neurosurgery Pierre Wertheimer Lyon University Hospital Lyon France
- Lyon's Neurosciences Research Center INSERM U1028/CNRSUMR 5292University of Lyon Lyon France
| | - Gian Luigi Gigli
- Clinical Neurology Unit Santa Maria della Misericordia University Hospital Udine Italy
- Department of Medicine (DAME) University of Udine Medical School Udine Italy
- Department of Mathematics, Informatics and Physics (DMIF) University of Udine Udine Italy
| | - Sylvain Rheims
- Department of Functional Neurology and Epileptology Hospital for Neurology and Neurosurgery Pierre Wertheimer Lyon University Hospital Lyon France
- Lyon's Neurosciences Research Center INSERM U1028/CNRSUMR 5292University of Lyon Lyon France
| | - Jérome Honnorat
- French Reference Center for Paraneoplastic Neurological Syndromes Hospital for Neurology and Neurosurgery Pierre Wertheimer Lyon University Hospital Lyon France
- SynatAc Team NeuroMyoGene InstituteINSERM U1217/CNRSUMR5310 Lyon France
- University Claude Bernard Lyon 1, University of Lyon Lyon France
| |
Collapse
|
21
|
Yilmaz FM, Little D, Gallagher M, Colcher A. Anti-glutamate Dehydrogenase Antibody Positive Cerebellar Ataxia and Stiff Person Syndrome Responding to Dual Treatment with Steroids and Intravenous Immunoglobulin: A Case Presentation and Literature Review. Cureus 2019; 11:e4851. [PMID: 31410334 PMCID: PMC6684109 DOI: 10.7759/cureus.4851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Anti-glutamic acid decarboxylase (anti-GAD) antibody syndrome (aGAS) has various presentations including cerebellar ataxia (CA) and stiff person syndrome (SPS). This is a treatable cause of CA and SPS. We present a case of a 49-year-old man who developed blurred vision, slurred speech, difficulty walking, unsteady gait, and clumsiness which had progressed over four months. The patient was found to have anti-GAD ab (+) CA and SPS and experienced significant symptomatic improvements after treatment with intravenous (IV) steroids followed by intravenous immunoglobulin (IVIG). The patient’s improvement persisted when he was reevaluated at follow up one month later. Since anti-GAD ab related diseases, including anti-GAD CA and SPS, are rarely diagnosed, there is limited data regarding the treatment of this condition. As there are only a few cases in the literature similar to this one, highlighting the successful treatment of anti-GAD ab cerebellar ataxia and SPS with dual therapy (steroids followed by IVIG) is important.
Collapse
Affiliation(s)
- Furkan M Yilmaz
- Neurology, Cooper Neurological Institute, Cooper University Hospital, Camden, USA
| | - Dena Little
- Neurology, Cooper Neurological Institute, Cooper University Hospital, Camden, USA
| | - Micheal Gallagher
- Neurophysiology, University of Maryland Medical Center, Baltimore, USA
| | - Amy Colcher
- Neurology, Cooper Neurological Institute, Cooper University Hospital, Camden, USA
| |
Collapse
|
22
|
Huang J, Li H, Zhou R, Huang W, Lin W, Chen T, Long Y. Clinical Heterogeneity in Patients with Glutamate Decarboxylase Antibody. Neuroimmunomodulation 2019; 26:234-238. [PMID: 31661704 DOI: 10.1159/000502695] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 08/08/2019] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE To explore the diversity and clinical features of anti-glutamate decarboxylase (GAD) antibody-associated neurological diseases. METHODS Clinical data of a series of 5 patients positive for anti-GAD antibodies were retrospectively analyzed. RESULTS All 5 patients were female, with a median age of 41.5 years (range 19-60 years). Their neurological symptoms included stiff-person syndrome (SPS), encephalitis, myelitis, cramp, visual loss, and paresthesia. Three patients (60%) were diagnosed with tumors, 2 cases of thymic tumor and 1 of breast cancer. On immunohistochemistry for tumor pathology, expression of GAD65 was found only in 1 patient. Four patients (80%) had abnormal brain MRI findings. All patients received immunotherapy and improved significantly after treatment, but 4 (80%) then experienced a relapse. CONCLUSIONS Neurological manifestations in anti-GAD-positive patients are diverse and include SPS, encephalitis, myelitis, cramp, visual loss, and paresthesia.
Collapse
Affiliation(s)
- Jiehong Huang
- Department of Neurology, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Institute of Neuroscience and The Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Collaborative Innovation Center for Neurogenetics and Channelopathies, Guangzhou, China
- Second Clinical College, Guangzhou Medical University, Xinzao, Panyu District, Guangzhou, China
| | - Huilu Li
- Department of Neurology, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Institute of Neuroscience and The Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Collaborative Innovation Center for Neurogenetics and Channelopathies, Guangzhou, China
- Second Clinical College, Guangzhou Medical University, Xinzao, Panyu District, Guangzhou, China
| | - Ruisi Zhou
- Department of Neurology, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Institute of Neuroscience and The Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Collaborative Innovation Center for Neurogenetics and Channelopathies, Guangzhou, China
- Second Clinical College, Guangzhou Medical University, Xinzao, Panyu District, Guangzhou, China
| | - Wenyao Huang
- Department of Neurology, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Institute of Neuroscience and The Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Collaborative Innovation Center for Neurogenetics and Channelopathies, Guangzhou, China
- Second Clinical College, Guangzhou Medical University, Xinzao, Panyu District, Guangzhou, China
| | - Wenhui Lin
- Department of Neurology, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Institute of Neuroscience and The Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Collaborative Innovation Center for Neurogenetics and Channelopathies, Guangzhou, China
- Second Clinical College, Guangzhou Medical University, Xinzao, Panyu District, Guangzhou, China
| | - Ting Chen
- Department of Neurology, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Institute of Neuroscience and The Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Collaborative Innovation Center for Neurogenetics and Channelopathies, Guangzhou, China
- Second Clinical College, Guangzhou Medical University, Xinzao, Panyu District, Guangzhou, China
| | - Youming Long
- Department of Neurology, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China,
- Institute of Neuroscience and The Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Collaborative Innovation Center for Neurogenetics and Channelopathies, Guangzhou, China,
- Second Clinical College, Guangzhou Medical University, Xinzao, Panyu District, Guangzhou, China,
| |
Collapse
|
23
|
Amanat M, Thijs RD, Salehi M, Sander JW. Seizures as a clinical manifestation in somatic autoimmune disorders. Seizure 2019; 64:59-64. [DOI: 10.1016/j.seizure.2018.11.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 11/10/2018] [Accepted: 11/22/2018] [Indexed: 02/07/2023] Open
|
24
|
Esposito S, Principi N, Calabresi P, Rigante D. An evolving redefinition of autoimmune encephalitis. Autoimmun Rev 2018; 18:155-163. [PMID: 30572142 DOI: 10.1016/j.autrev.2018.08.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Accepted: 08/18/2018] [Indexed: 12/13/2022]
Abstract
Autoimmune encephalitis encompasses a wide variety of protean pathologic processes associated with the presence of antibodies against neuronal intracellular proteins, synaptic receptors, ion channels and/or neuronal surface proteins. This type of encephalitis can also involve children with complex patterns of seizures and unexpected behavioural changes, which jeopardize their prompt recognition and treatment. Many epidemiological studies have shown that numerous immune-based forms of encephalitis can be encountered, almost surpassing the rate of postinfectious encephalitides. However, the overall exact prevalence of autoimmune encephalopathies remains underestimated, and the definition of diagnostic algorithms results muddled. The spectrum of neuropsychiatric manifestations in the pediatric population with autoimmune encephalitis is less clear than in adults, but the integration of clinical, immunological, electrophysiological and neuroradiological data is essential for a general approach to patients. In this review we report the most relevant data about both immunologic and clinical characteristics of the main autoimmune encephalitides recognized so far, with the aim of assisting clinicians in the differential diagnosis and favouring an early effective treatment. Correlations between phenotype and autoantibodies involved in the neurological damage of autoimmune encephalitis are largely unknown in the first years of life, because of the relatively small number of pediatric patients adequately studied. Future multicenter collaborative studies are needed to improve the diagnostic approach and tailor personalized therapies in the long-term.
Collapse
Affiliation(s)
- Susanna Esposito
- Pediatric Clinic, Department of Surgical and Biomedical Sciences, Università degli Studi di Perugia, Perugia, Italy.
| | | | - Paolo Calabresi
- Neurology Clinic, Department of Medicine, Università degli Studi di Perugia, Perugia, Italy
| | - Donato Rigante
- Institute of Pediatrics, Università Cattolica Sacro Cuore, Rome, Italy; Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| |
Collapse
|
25
|
Ferensztajn-Rochowiak E, Kaczmarek M, Wójcicka M, Kaufman-Szukalska E, Dziuda S, Remlinger-Molenda A, Szeliga-Neymann A, Losy J, Rybakowski JK. Glutamate-Related Antibodies and Peripheral Insulin-Like Growth Factor in Bipolar Disorder and Lithium Prophylaxis. Neuropsychobiology 2018; 77:49-56. [PMID: 30336492 DOI: 10.1159/000493740] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 09/13/2018] [Indexed: 11/19/2022]
Abstract
AIMS The aim of this study was to evaluate serum levels of the antineuronal antibodies anti-N-methyl-D-aspartate receptor (NMDAR) and anti-glutamic acid decarboxylase (GAD), and insulin-like growth factor 1 (IGF-1), in patients with bipolar disorder (BD), during manic and depressive episodes and in remission compared to euthymic patients receiving long-term lithium therapy. METHODS Serum levels of anti-NMDAR and anti-GAD 450/620 antibodies, as well as IGF-1, were measured using the ELISA method in 19 manic and 17 depressed patients both in an acute episode and in remission after the episode. All of the subjects were under pharmacological treatment. The control group included 18 euthymic BD patients receiving lithium for 9-44 years (mean 22 ± 11) in whom a single measurement was performed. RESULTS Serum levels of anti-NMDAR antibodies were higher in acute manic episodes than in lithium-treated patients. Serum levels of anti-GAD 450/620 antibodies were higher in acute manic and depressive episodes compared to remission after the respective episode. Their values in both acute manic and depressive episodes were higher than those in lithium-treated patients. Serum levels of IGF-1 were higher in acute manic episodes and in remission after mania than in lithium-treated patients. CONCLUSION Higher levels of anti-NMDAR and anti-GAD antibodies during episodes may point to an abnormality in the glutamatergic system in BD. Increased levels of IGF-1 during an acute manic episode and in remission after mania may constitute a compensatory mechanism against excitotoxicity. Lower levels of anti-NMDAR, anti-GAD antibodies, and IGF-1 during long-term lithium treatment may reflect normalization of this processes, contributing to mood stabilization.
Collapse
Affiliation(s)
| | - Mariusz Kaczmarek
- Department of Clinical Immunology, Poznan University of Medical Sciences, Poznan, Poland
| | - Marlena Wójcicka
- Department of Clinical Neuroimmunology, Poznan University of Medical Sciences, Poznan, Poland
| | | | - Sebastian Dziuda
- Department of Psychiatric Genetics, Poznan University of Medical Sciences, Poznan, Poland.,Department of Psychiatry, Poznan University of Medical Sciences, Poznan, Poland
| | | | | | - Jacek Losy
- Department of Clinical Neuroimmunology, Poznan University of Medical Sciences, Poznan, Poland
| | - Janusz K Rybakowski
- Department of Adult Psychiatry, Poznan University of Medical Sciences, Poznan, Poland.,Department of Child and Adolescent Psychiatry, Poznan University of Medical Sciences, Poznan, Poland
| |
Collapse
|