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Unal D, Cam V, Emreol HE, Özen S. Diagnosis and Management of Pediatric Neuropsychiatric Systemic Lupus Erythematosus: An Update. Paediatr Drugs 2024; 26:381-395. [PMID: 38805115 DOI: 10.1007/s40272-024-00632-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/25/2024] [Indexed: 05/29/2024]
Abstract
Neuropsychiatric systemic lupus erythematosus (NPSLE) is a potentially serious and life-threatening complication of SLE. The presentation and severity of neuropsychiatric involvement in SLE may show considerable variability. The disease can affect the neural tissue directly or may be associated with vascular involvement, mainly associated with anti-phospholipid (aPL) antibodies. A direct causal link with SLE may sometimes be challenging since there are many confounding factors and the symptoms may be non-specific. Despite its remarkable sensitivity in detecting hemorrhagic and ischemic stroke, transverse myelitis and ischemic infarction, magnetic resonance imaging (MRI) lacks the spatial resolution required to identify microvascular involvement. When standard MRI fails to detect a suspicious lesion, it is advisable to use advanced imaging modalities such as positron emission tomography (PET), single photon emission computed tomography (SPECT) or quantitative MRI, if available. Even with these advanced modalities, the specificity of neuroimaging in NPSLE remains inadequate (60-82% for MRI). Neuropsychiatric syndromes, such as cerebrovascular events, seizures and cognitive impairments appear to be associated with serum aPL antibodies. Some studies have shown that anti-ribosomal P antibodies have a low sensitivity for NPSLE and a limited contribution to the differentiation of different clinical entities. Treatment has two main goals: symptomatic relief and treatment of the disease itself. Commonly used immunosuppressants for NPSLE include cyclophosphamide (CYC), azathioprine (AZA), and mycophenolate mofetil (MMF). According to EULAR's current recommendation, strong immunosuppressants such as CYC and rituximab (RTX) should be preferred. Biologics have also been used in NPSLE. Fingolimod, eculizumab, and JAK inhibitors are potential drugs in the pipeline. Developing targeted therapies will be possible by a better understanding of the pathological mechanisms.
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Affiliation(s)
- Dilara Unal
- Department of Pediatric Rheumatology, Hacettepe University Medical Faculty, Sihhiye Campus, 06100, Ankara, Turkey
| | - Veysel Cam
- Department of Pediatric Rheumatology, Hacettepe University Medical Faculty, Sihhiye Campus, 06100, Ankara, Turkey
| | - Hulya Ercan Emreol
- Department of Pediatric Rheumatology, Hacettepe University Medical Faculty, Sihhiye Campus, 06100, Ankara, Turkey
| | - Seza Özen
- Department of Pediatric Rheumatology, Hacettepe University Medical Faculty, Sihhiye Campus, 06100, Ankara, Turkey.
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McEntire CRS, Glenn T, Unizony S, Cho T, Reda H, Chwalisz BK. Symmetric leukoencephalopathy associated with systemic lupus erythematosus: A systematic review of a distinctive neurorheumatologic syndrome. Mult Scler Relat Disord 2024; 88:105717. [PMID: 38943754 DOI: 10.1016/j.msard.2024.105717] [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: 01/12/2024] [Revised: 06/04/2024] [Accepted: 06/08/2024] [Indexed: 07/01/2024]
Abstract
BACKGROUND A symmetric leukoencephalopathy can occur in the context of systemic lupus erythematosus (SLE), often as a first manifestation of underlying rheumatologic disease. Recognition of this distinctive syndrome can prompt investigation for SLE when undiagnosed, or prompt treatment initiation when the diagnosis is already known. Earlier recognition of this syndrome could lead to more effective treatment of the disease. METHODS Clinical, laboratory, and radiographic features of three patients were described from an academic medical center in the United States with treatment dates between 2015 and 2022. A systematic review of literature from 1991 to 2023 yielded data for an additional 23 patients. RESULTS Twenty-six total patients with symmetric leukoencephalopathy were included in this study. The median age of the patients was 37 years (range 10-69), 22 patients (85 %) were female, and 4 (15 %) were male. Fourteen of 26 patients (54 %) had this as the first clinical manifestation of SLE. Contrast enhancement was present on MRI brain in 3/26 (88 %) patients. Twenty patients (77 %) were treated with pulse-dose steroids, and all but one patient received some immunomodulatory therapy. Seven patients (27 %) progressed to death. No meaningful predictive differences were found between patients who survived and those who did not. CONCLUSIONS In this case series and literature review patients developed symmetric leukoencephalopathy in systemic lupus erythematosus most often as the first clinical manifestation of SLE. Clinicians should consider this syndrome in any patient with acute onset of symmetric leukoencephalopathy on brain magnetic resonance imaging.
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Affiliation(s)
- Caleb R S McEntire
- Department of Neurology, Massachusetts General Hospital, Boston, MA, United States; Department of Neurology, Brigham and Women's Hospital, Boston, MA, United States.
| | - Trevor Glenn
- Department of Neurology, Massachusetts General Hospital, Boston, MA, United States; Department of Neurology, Brigham and Women's Hospital, Boston, MA, United States
| | - Sebastian Unizony
- Rheumatology, Allergy and Immunology Division, Massachusetts General Hospital, Boston, MA, United States
| | - Tracey Cho
- Neuro-Immunology Division, University of Iowa Hospitals and Clinics, United States
| | - Haatem Reda
- Department of Neurology, Massachusetts General Hospital, Boston, MA, United States
| | - Bart K Chwalisz
- Department of Neurology, Massachusetts General Hospital, Boston, MA, United States
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Feng SY, Su LC, Liu XY, Qin Z, Fu L, Huang AF, Xu WD. Prediction model for developing neuropsychiatric systemic lupus erythematosus in lupus patients. Clin Rheumatol 2024; 43:1881-1896. [PMID: 38676758 DOI: 10.1007/s10067-024-06970-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 03/15/2024] [Accepted: 04/09/2024] [Indexed: 04/29/2024]
Abstract
OBJECTIVE This study aimed to construct a predictive model for assessing the risk of development of neuropsychiatric systemic lupus erythematosus (NPSLE) among patients with SLE based on clinical, laboratory, and meteorological data. METHODS A total of 2232 SLE patients were included and were randomly assigned into training and validation sets. Variables such as clinical and laboratory data and local meteorological data were screened by univariate and least absolute shrinkage and selection operator (LASSO) logistic regression modelling. After 10-fold cross-validation, the predictive model was built by multivariate logistic regression, and a nomogram was constructed to visualize the risk of NPSLE. The efficacy and accuracy of the model were assessed by receiver operating characteristic (ROC) curve and calibration curve analysis. Net clinical benefit was assessed by decision curve analysis. RESULTS Variables that were included in the predictive model were anti-dsDNA, anti-SSA, lymphocyte count, hematocrit, erythrocyte sedimentation rate, pre-albumin, retinol binding protein, creatine kinase isoenzyme MB, Nterminal brain natriuretic peptide precursor, creatinine, indirect bilirubin, fibrinogen, hypersensitive C-reactive protein, CO, and mild contamination. The nomogram showed a broad prediction spectrum; the area under the curve (AUC) was 0.895 (0.858-0.931) for the training set and 0.849 (0.783-0.916) for the validation set. CONCLUSION The model exhibits good predictive performance and will confer clinical benefit in NPSLE risk calculation. Key Points • Clinical, laboratory, and meteorological data were incorporated into a predictive model for neuropsychiatric systemic lupus erythematosus (NPSLE) in SLE patients. • Anti-dsDNA, anti-SSA, LYM, HCT, ESR, hsCRP, IBIL, PA, RBP, CO, Fib, NT-proBNP, Crea, CO, and mild contamination are predictors of the development of NPSLE and may have potential for research. • The nomogram has good predictive performance and clinical value and can be used to guide clinical diagnosis and treatment.
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Affiliation(s)
- Si-Yu Feng
- Department of Evidence-Based Medicine, School of Public Health, Southwest Medical University, Luzhou, Sichuan, China
| | - Lin-Chong Su
- Hubei Provincial Key Laboratory of Occurrence and Intervention of Rheumatic diseases, Affiliated Minda Hospital of Hubei Institute for Nationalities, Enshi, Hubei, China
- Department of Rheumatology and Immunology, Affiliated Minda Hospital of Hubei Institute for Nationalities, Enshi, Hubei, China
| | - Xiao-Yan Liu
- Department of Evidence-Based Medicine, School of Public Health, Southwest Medical University, Luzhou, Sichuan, China
| | - Zhen Qin
- Department of Rheumatology and Immunology, the Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, China
| | - Lu Fu
- Laboratory Animal Center, Southwest Medical University, Luzhou, Sichuan, China
| | - An-Fang Huang
- Department of Rheumatology and Immunology, the Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, China
| | - Wang-Dong Xu
- Department of Evidence-Based Medicine, School of Public Health, Southwest Medical University, Luzhou, Sichuan, China.
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Ramawad HA, Toloui A, Chen V, Sun Y. Cerebellar Leukoencephalopathy following Fentanyl Intoxication. A case report and review of the literature. Qatar Med J 2024; 2023:36. [PMID: 38187991 PMCID: PMC10770733 DOI: 10.5339/qmj.2023.36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 11/09/2023] [Indexed: 01/09/2024] Open
Abstract
The opioid crisis has become a significant public health concern in recent years. Although respiratory depression and overdose are the most reported side effects of fentanyl, there have been rare cases of cerebellar leukoencephalopathy (CLE) following fentanyl intoxication. A 29-year-old man with a history of opioid use disorder and intravenous drug use presented to the emergency room with significant ataxia and dysarthria following fentanyl intoxication. According to the patient, the symptoms began four days prior after "chasing the dragon" with "pure fentanyl", and he reported experiencing nausea and dizziness, particularly during ambulation. Neurological examination revealed a positive Romberg test, ataxia, and delayed speech. Brain magnetic resonance imaging (MRI) indicated there was toxic degeneration of the cerebellar white matter that extended into the posterior limbs of the internal capsule. Urine drug screening was positive for opioids, making fentanyl-induced cerebellar leukoencephalopathy the most likely diagnosis in this case. This case of opioid-induced CLE underscores the critical significance of early recognition, which is vital for enhancing a patient's recovery and averting the development of severe neurological complications.
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Affiliation(s)
- Hamzah Adel Ramawad
- NYC Health & Hospital, South Brooklyn Health, Brooklyn, New York, USA ORCID iD: 0000-0002-9687-3599
| | | | - Victor Chen
- New York Institute of Technology College of Osteopathic Medicine, New York, USA ORCID iD: 0000-0002-9687-3599
| | - Yan Sun
- NYC Health & Hospital, South Brooklyn Health, Brooklyn, New York, USA ORCID iD: 0000-0002-9687-3599
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Zouari R, Saeid MZ, Marzouk M, Rachdi A, Ben Sassi S. Diffuse cerebral edema with leukoencephalopathy revealing systemic lupus erythematosus: A case report and review of literature. Lupus 2023; 32:1561-1571. [PMID: 37887528 DOI: 10.1177/09612033231207723] [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: 10/28/2023]
Abstract
Background: Systemic lupus erythematosus (SLE) is a common autoimmune disease with various symptoms involving multiple organs. Neuropsychological manifestations are various and generally serious. Leukoencephalopathy is particularly rare but life-threatening in patients with SLE. Results: Here, we describe the case of a young woman who developed a subacute onset intracranial hypertension, papillar edema on fundus examination, diffuse cerebral edema on brain CT scan, and diffuse leukoencephalopathy on brain magnetic resonance imaging (MRI). The immunological workup was positive for antinuclear antibodies, anti-DNA and anti-extractable nuclear antigens (ENA) antibodies. She was ultimately diagnosed with SLE and experienced significant improvement after treatment with high dose of corticosteroids, acetazolamide, and immunosuppressant. We additionally review the previously reported cases of SLE with diffuse cerebral edema and leukoencephalopathy with a focus on the possible pathophysiological mechanisms of such association. Conclusions: We highlight, through this case report and the literature review, the importance of considering SLE in patients with cerebral edema and diffuse leukoencephalopathy and treating it aggressively.
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Affiliation(s)
- Rania Zouari
- Department of neurology, Mongi Ben Hmida National Institute of Neurology of Tunis, Tunis, Tunisia
- Faculty of Medicine of Tunis, El Manar University, Tunis, Tunisia
| | - Mohamed Zakaria Saeid
- Department of neurology, Mongi Ben Hmida National Institute of Neurology of Tunis, Tunis, Tunisia
- Faculty of Medicine of Tunis, El Manar University, Tunis, Tunisia
| | - Mahmoud Marzouk
- Department of anesthesiology and reanimation, Mongi Ben Hmida National Institute of Neurology in Tunis, Tunis, Tunisia
- Faculty of Medicine of Tunis, El Manar University, Tunis, Tunisia
| | - Amine Rachdi
- Department of neurology, Mongi Ben Hmida National Institute of Neurology of Tunis, Tunis, Tunisia
- Faculty of Medicine of Tunis, El Manar University, Tunis, Tunisia
| | - Samia Ben Sassi
- Department of neurology, Mongi Ben Hmida National Institute of Neurology of Tunis, Tunis, Tunisia
- Faculty of Medicine of Tunis, El Manar University, Tunis, Tunisia
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Natoli V, Charras A, Hahn G, Hedrich CM. Neuropsychiatric involvement in juvenile-onset systemic lupus erythematosus (jSLE). Mol Cell Pediatr 2023; 10:5. [PMID: 37556020 PMCID: PMC10412509 DOI: 10.1186/s40348-023-00161-7] [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: 04/27/2023] [Accepted: 07/26/2023] [Indexed: 08/10/2023] Open
Abstract
Systemic lupus erythematosus (SLE) is a rare autoimmune/inflammatory disease with significant morbidity and mortality. Approximately 15-20% of SLE patients develop the disease during childhood or adolescence (juvenile-onset SLE/jSLE). Patients with jSLE exhibit more variable and severe disease when compared to patients with disease-onset during adulthood. Neuropsychiatric (NP) involvement is a clinically heterogenous and potentially severe complication. Published reports on the incidence and prevalence of NP-jSLE are scarce, and the exact pathophysiology is poorly understood.This manuscript provides a review of the existing literature, suggesting NP involvement in 13.5-51% of jSLE patients. Among patients with NP-jSLE affecting the CNS, we propose two main subgroups: (i) a chronic progressive, predominantly type 1 interferon-driven form that poorly responds to currently used treatments, and (ii) an acutely aggressive form that usually presents early during the disease that may be primarily mediated by auto-reactive effector lymphocytes. While this hypothesis requires to be tested in large collaborative international cohort studies, it may offer future patient stratification and individualised care.
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Affiliation(s)
- Valentina Natoli
- Department of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
- Department of Rheumatology, Institute in the Park, Alder Hey Children's NHS Foundation Trust, Liverpool, UK
- Dipartimento di Neuroscienze, Riabilitazione, Oftalmologia, Genetica e Scienze Materno-Infantili, Università degli Studi di Genova, Genoa, Italy
| | - Amandine Charras
- Department of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
| | - Gabriele Hahn
- Department of Radiology, Universitätsklinikum Carl Gustav Carus, Dresden University of Technology, Dresden, Germany
| | - Christian M Hedrich
- Department of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK.
- Department of Rheumatology, Institute in the Park, Alder Hey Children's NHS Foundation Trust, Liverpool, UK.
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7
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Dar S, Koirala S, Khan A, Bellary MD, Patel AV, Mathew B, Singh R, Baigam N, Razzaq W, Abdin ZU, Khawaja UA. A Comprehensive Literature Review on Managing Systemic Lupus Erythematosus: Addressing Cardiovascular Disease Risk in Females and Its Autoimmune Disease Associations. Cureus 2023; 15:e43725. [PMID: 37727166 PMCID: PMC10505685 DOI: 10.7759/cureus.43725] [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: 06/13/2023] [Accepted: 08/18/2023] [Indexed: 09/21/2023] Open
Abstract
This review aimed to evaluate the mechanism of premature cardiovascular disease (CVD) in systemic lupus erythematosus (SLE) patients, particularly in the female population, and emphasize the need for early management interventions; explore the association between SLE and two autoimmune diseases, myasthenia gravis (MG) and antiphospholipid antibody syndrome (APS), and their management strategies; and evaluate the effectiveness of pharmacological and non-pharmacological interventions in managing SLE, focusing on premenopausal females, females of childbearing age, and pregnant patients. We conducted a comprehensive literature review to achieve these objectives using various databases, including PubMed, Google Scholar, and Cochrane. The collected data were analyzed and synthesized to provide an evidence-based overview of SLE, its management strategies as an independent disease, and some disease associations. The treatment should be focused on remission, preventing organ damage, and improving the overall quality of life (QOL). Extensive emphasis should also be focused on diagnosing SLE and concurrent underlying secondary diseases timely and managing them appropriately.
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Affiliation(s)
- Saleha Dar
- Department of Adult Medicine, Louisiana State University Health Sciences Center, Shreveport, USA
| | - Sabina Koirala
- Department of Medicine, Gandaki Medical College, Pokhara, NPL
| | - Arooba Khan
- Department of Internal Medicine, Khyber Medical College, Peshawar, PAK
| | | | - Arya V Patel
- Department of Internal Medicine, Smt. Nathiba Hargovandas Lakhmichand (NHL) Municipal Medical College, Ahmedabad, IND
| | - Bejoi Mathew
- Department of Internal Medicine, Sri Devaraj Urs Medical College, Kolar, IND
| | - Rahul Singh
- Department of Medicine, Armed Forces Medical College, Pune, IND
| | - Nahida Baigam
- Department of Medicine, Association of Physicians of Pakistani Descent of North America (APPNA), Westmont, USA
| | - Waleed Razzaq
- Department of Internal Medicine, Services Hospital Lahore, Lahore, PAK
| | - Zain U Abdin
- Department of Medicine, District Head Quarter Hospital, Faisalabad, PAK
| | - Uzzam Ahmed Khawaja
- Department of Pulmonary and Critical Care Medicine, Jinnah Medical and Dental College, Karachi, PAK
- Department of Clinical and Translational Research, Dr. Ferrer BioPharma, South Miami, USA
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8
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Feng Y, Yu T, Xiao Q, Yang X. Case Report: Rapid Progression of Cognitive Dysfunction as an Initial Feature of Systemic Lupus Erythematosus With Leukoencephalopathy: A Case Report and Literature Review. Front Neurol 2022; 13:934335. [PMID: 35899269 PMCID: PMC9309334 DOI: 10.3389/fneur.2022.934335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 06/23/2022] [Indexed: 12/02/2022] Open
Abstract
Neuropsychiatric systemic lupus erythematosus (NPSLE) has been considered to have high morbidity and mortality. Thus, earlier recognition and treatment are of great importance. However, the rapid progression of cognitive dysfunction with leukoencephalopathy as an initial presentation in SLE is rarely described. We report a case in which an elderly man experienced rapidly progressive cognitive impairment with bilateral, symmetric, and diffuse leukoencephalopathy with lasting diffusion-weighted image hyperintensity. An immunological workup showed low complement levels and positivity for antinuclear antibody -speckle and Coombs tests in the patient's serum samples. He had an appropriate improvement in cognitive function after receiving a combination of various immunotherapies. Long-term follow-up showed clinical improvement, including rheumatological labs and neuroimaging. A review of the literature on NPSLE with leukoencephalopathy and a summary of all reported cases to date are also presented. Our case indicated that isolated leukoencephalopathy in NPSLE, as an indicator of severe NPSLE, can be recognized early. Immunotherapy is warranted given the possibility of clinical improvement.
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Affiliation(s)
- Yukun Feng
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Neurology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Teng Yu
- Department of Pathology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qin Xiao
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Qin Xiao
| | - Xiaodong Yang
- Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Xiaodong Yang
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Higashida-Konishi M, Akiyama M, Shimada T, Hama S, Takei H, Izumi K, Oshima H, Okano Y. Acute encephalitis in primary Sjögren's syndrome: A case report and literature review. Mod Rheumatol Case Rep 2022; 6:209-216. [PMID: 34850084 DOI: 10.1093/mrcr/rxab042] [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: 08/10/2021] [Revised: 09/01/2021] [Accepted: 10/11/2021] [Indexed: 06/13/2023]
Abstract
Acute encephalitis is an extremely rare condition in primary Sjogren's syndrome (pSS), and its characteristics and prognosis remain unclear. Here, we report the case of pSS presented with acute encephalitis. She was admitted to our hospital for acute disturbance of consciousness. Acute encephalitis was diagnosed based on the results of the cerebrospinal fluid test (the increase of leucocyte counts, proteins, and interleukin-6 levels), magnetic resonance imaging, and single-photon emission computed tomography with 99mTc. The infectious aetiologies and underlying malignancies were excluded. Serum anti-Sjogren's syndrome-related antigen A autoantibody was positive with extremely high titre. The biopsy specimen of her labial salivary gland revealed a focal lymphocytic sialadenitis with a score of grade 4 in the Greenspan grade. She also developed diffuse alveolar haemorrhage during the clinical course. She was diagnosed with pSS complicated with acute encephalitis followed by diffuse alveolar haemorrhage and successfully treated with pulse steroids, high dose of prednisolone and intravenous cyclophosphamide. Our present case and literature review suggest that acute encephalitis associated with pSS can be treatable with the immunosuppressive therapy, and thus early recognition and treatment initiation are important for this life-threatening condition. Thus, pSS should be included in the differential diagnosis of unexplained encephalitis. Notably, our case characteristically showed diffuse alveolar haemorrhage, adding new insights into the pathogenesis of acute encephalitis associated with pSS that capillaritis might be the underlying cause of this condition.
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Affiliation(s)
- Misako Higashida-Konishi
- Department of Connective Tissue Diseases, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Mitsuhiro Akiyama
- Department of Connective Tissue Diseases, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Tatsuya Shimada
- Department of Connective Tissue Diseases, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Satoshi Hama
- Department of Connective Tissue Diseases, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Hiroshi Takei
- Department of Connective Tissue Diseases, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Keisuke Izumi
- Department of Connective Tissue Diseases, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hisaji Oshima
- Department of Connective Tissue Diseases, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Yutaka Okano
- Department of Connective Tissue Diseases, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
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