Linda Sundvall, Litten S. Rossen, Vivien R. Schack, Bettina Bundgaard, Peter V. Rasmussen, Thor Petersen, Per Höllsberg
{"title":"T cells from newly diagnosed multiple sclerosis patients have enhanced responsiveness to CD46 activation","authors":"Linda Sundvall, Litten S. Rossen, Vivien R. Schack, Bettina Bundgaard, Peter V. Rasmussen, Thor Petersen, Per Höllsberg","doi":"10.1111/cen3.12818","DOIUrl":"https://doi.org/10.1111/cen3.12818","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objective</h3>\u0000 \u0000 <p>To evaluate the responsiveness of T cells from newly diagnosed multiple sclerosis (MS) patients to CD46 co-stimulation, a membrane co-factor protein potentially involved in MS pathogenesis.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>T cells from MS patients and non-diseased symptomatic controls (SC) were activated <i>in vitro</i> with or without αCD46 antibody co-stimulation. Cytokine responses were measured to assess T-cell responsiveness. The fold difference between αCD3/CD46 and αCD3/isotype responses was calculated to determine the enhancement of CD46 activation in MS compared with SC. Additionally, the CD46 receptor phenotype, including the expression of the CD46 CYT-1 and CYT-2 isoforms, was analyzed.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>In the absence of αCD46 co-stimulation, MS T cells showed weaker cytokine responses compared to SC. However, CD46 engagement neutralized this deficit, resulting in a higher fold difference in MS αCD3/CD46 responses compared to SC. MS T cells also showed a trend toward a biased CD46 receptor phenotype, with a preference for the CD46 CYT-2 isoform.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>CD46 activation enhances T-cell responses in newly diagnosed MS patients. A bias toward the CD46 CYT-2 isoform is observed, aligning with the previous findings that the absence of CYT-2 downregulation in MS might contribute to a pro-inflammatory environment.</p>\u0000 </section>\u0000 </div>","PeriodicalId":10193,"journal":{"name":"Clinical and Experimental Neuroimmunology","volume":"16 3","pages":"214-226"},"PeriodicalIF":0.0,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/cen3.12818","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144782814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Myositis-specific/associated autoantibodies as diagnostic keys and disease drivers","authors":"Satoshi Yamashita","doi":"10.1111/cen3.12819","DOIUrl":"https://doi.org/10.1111/cen3.12819","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Myositis-specific autoantibodies (MSAs) and myositis-associated autoantibodies (MAAs) have emerged as crucial biomarkers in idiopathic inflammatory myopathies (IIMs).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>This review synthesizes recent research on MSAs and MAAs in various IIM subtypes.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Specific autoantibodies correlate with distinct clinical manifestations and pathological features. For example, anti-MDA5 antibodies are linked to rapidly progressive interstitial lung disease, while anti-TIF1-γ antibodies are associated with increased malignancy risk in adult dermatomyositis. Animal models have demonstrated the pathogenic potential of certain antibodies, such as anti-TIF1-γ, anti-SRP, and anti-HMGCR, in inducing experimental myositis.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Understanding the roles of MSAs and MAAs is crucial for elucidating disease mechanisms, developing targeted therapies, and improving patient outcomes. Further research is needed to fully characterize their functional implications and explore their potential as biomarkers for disease activity, prognosis, and treatment response.</p>\u0000 </section>\u0000 </div>","PeriodicalId":10193,"journal":{"name":"Clinical and Experimental Neuroimmunology","volume":"16 1","pages":"44-54"},"PeriodicalIF":0.0,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143455722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Neuroimmunology frontiers: Unveiling immune mechanisms in central nervous system repair and pathology","authors":"Ryo Yamasaki","doi":"10.1111/cen3.12817","DOIUrl":"https://doi.org/10.1111/cen3.12817","url":null,"abstract":"","PeriodicalId":10193,"journal":{"name":"Clinical and Experimental Neuroimmunology","volume":"15 4","pages":"201-202"},"PeriodicalIF":0.0,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142749048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Real-world safety and treatment patterns of subcutaneous IgPro20 for chronic inflammatory demyelinating polyneuropathy: Post-marketing surveillance in Japan","authors":"Naoki Terasaka, Takanori Mizushima, Yuki Niwa, Tetsushi Akasaki, Hideo Usui","doi":"10.1111/cen3.12816","DOIUrl":"https://doi.org/10.1111/cen3.12816","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>IgPro20, a subcutaneous immunoglobulin replacement therapy, is approved in Japan for chronic inflammatory demyelinating polyneuropathy (CIDP). This post-marketing surveillance study characterized real-world treatment patterns and safety profile of injection site reactions associated with IgPro20 treatment in Japanese patients with CIDP.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Patients with CIDP initiating IgPro20 between October 2019 and September 2022 at medical institutions in Japan were followed for 6 months. The primary outcome was the incidence of injection site reactions. Other outcomes included patient clinicodemographic characteristics, IgPro20 treatment status, CIDP-related concomitant medications and any concurrent therapies.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The analysis included 108 patients from 38 sites. CIDP subtypes were typical (61.1%), multifocal acquired demyelinating sensory and motor neuropathy (multifocal; 19.4%), others (14.8%) or unknown (4.6%). Approximately one-fifth (21.3%) of patients commenced IgPro20 at a dosage of <200 mg/kg, 27.8% at ≥200 to ≤300 mg/kg, 37.0% at >300 to ≤400 mg/kg and 11.1% at >400 mg/kg. Most doses (82.7%) were given at home: 62.0% self-administered, 11.7% with caregiver and 8.9% with healthcare professional assistance. A total of 55 patients used CIDP-related concomitant medications, including corticosteroids (35.2%), immunosuppressants (19.4%) or intravenous immunoglobulin G (7.4%). The data also showed that various treatment patterns were used for these combinations. A total of 40 patients (37.0%) experienced injection site reactions, most frequently injection site erythema (21.3%) and injection site swelling (17.6%); one case of ulcer occurred (0.9%). No significant relationship between injection dosage/speed and the incidence of injection site reactions was observed.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>This study of the use of subcutaneous IgPro20 for CIDP in Japan showed a real-world safety profile consistent with phase III trial data.</p>\u0000 </section>\u0000 </div>","PeriodicalId":10193,"journal":{"name":"Clinical and Experimental Neuroimmunology","volume":"16 2","pages":"108-117"},"PeriodicalIF":0.0,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/cen3.12816","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143919872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sota Kyuragi, Shogo Inamine, Masahiro Ohgidani, Takahiro A. Kato
{"title":"Human monocyte-derived microglia-like (iMG) cells: A tool to explore microglial dynamics","authors":"Sota Kyuragi, Shogo Inamine, Masahiro Ohgidani, Takahiro A. Kato","doi":"10.1111/cen3.12815","DOIUrl":"https://doi.org/10.1111/cen3.12815","url":null,"abstract":"<p>Recent studies have highlighted the importance of microglia as key immunomodulators in a variety of neuropsychiatric diseases. Postmortem brain analysis and positron emission tomography are representative research approaches to assess microglial activation in human patients and this research has revealed microglial activation in the brains of patients with various neuropsychiatric disorders. However, only limited aspects of microglial activation can be assessed with these methods. To overcome the technical and ethical limitations of collecting human-derived microglia in brain biopsies, we first developed a method to generate directly induced microglia-like (iMG) cells from fresh human peripheral blood monocytes in 2014. These iMG cells can be used to perform dynamic morphological and molecular analyses regarding phagocytic capacity and cytokine release following stress stimulation at the cellular level. Patient-derived iMG cells can potentially serve as an important surrogate marker for estimating microglial activation in the human brain, and may provide previously unknown insights into the dynamic pathophysiology of microglia in patients with neuropsychiatric disorders. Thus, the iMG-based technology could be used as a valuable reverse translational tool and provide new insights into the dynamic molecular pathophysiology of microglia in a wide variety of psychiatric and physical disorders.</p>","PeriodicalId":10193,"journal":{"name":"Clinical and Experimental Neuroimmunology","volume":"15 4","pages":"222-227"},"PeriodicalIF":0.0,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/cen3.12815","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142749318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Common principles of macrophage biology in blood–tissue barriers","authors":"Shin-ichiro Hiraga, Takahiro Masuda","doi":"10.1111/cen3.12812","DOIUrl":"https://doi.org/10.1111/cen3.12812","url":null,"abstract":"<p>Blood–tissue barriers play crucial roles in specialized tissues such as the central nervous system (CNS), eye, testis, and placenta. Tissue-resident macrophages in these tissues are indispensable for maintaining tissue homeostasis and responding to pathological conditions. Recent advances in high-throughput and high-dimensional single-cell analysis techniques, coupled with fate-mapping tools, have revealed a remarkable diversity of tissue-resident macrophages at the blood–tissue barrier. However, while comprehensive expression profiling has revealed the heterogeneity of macrophages within individual tissues, the commonalities of macrophages across anatomically similar structures like blood–tissue barriers remain poorly understood. This review focuses on the diversity and functional specialization of macrophages in tissues with blood–tissue barriers, highlighting recent insights into their anatomical distribution, developmental origins, phenotypic characteristics, and roles in maintaining tissue homeostasis. These findings may deepen our understanding of macrophage adaptation mechanisms in tissues with blood–tissue barriers, potentially leading to improved therapies for related disorders. Furthermore, examining the similarities and differences of macrophages across tissues may elucidate the molecular underpinnings of tissue-specific adaptation mechanisms and functional specialization.</p>","PeriodicalId":10193,"journal":{"name":"Clinical and Experimental Neuroimmunology","volume":"15 4","pages":"203-214"},"PeriodicalIF":0.0,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Noriko Sato, Koji Wakimoto, Kyoko Kato, Yutaka Susuta, Kengo Ueda, Yoshihisa Satou, Takayoshi Sasajima, Jun-ichi Kira
{"title":"Safety and effectiveness of fingolimod in Japanese patients with multiple sclerosis: Results of a post-marketing surveillance study","authors":"Noriko Sato, Koji Wakimoto, Kyoko Kato, Yutaka Susuta, Kengo Ueda, Yoshihisa Satou, Takayoshi Sasajima, Jun-ichi Kira","doi":"10.1111/cen3.12814","DOIUrl":"https://doi.org/10.1111/cen3.12814","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objective</h3>\u0000 \u0000 <p>Fingolimod is the first oral sphingosine-1-phosphate receptor modulator approved in Japan for multiple sclerosis (MS). A large Japanese observational study of fingolimod in patients with MS was carried out to support its safety and effectiveness in a real-world setting.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>This 2-year, prospective, multicenter, single-cohort, observational study included all Japanese patients with MS who initiated fingolimod (0.5 mg/day). Safety endpoints included adverse events and adverse drug reactions. Effectiveness endpoints included the annualized relapse rate, Kurtzke's Expanded Disability Status Scale score and physician clinical global impression. All endpoints were analyzed in fingolimod-naïve patients.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Of the 1792 patients who started fingolimod between 28 November 2011 and 31 May 2013, 1624 and 1623 fingolimod-naïve patients were included in the safety and effectiveness analysis sets, respectively. The most common MS type was relapsing–remitting MS (89.47%). Adverse events, adverse events leading to discontinuation of fingolimod, adverse drug reactions and serious adverse drug reaction incidences were 64.10%, 15.33%, 57.88% and 23.46%, respectively. No new/unexpected safety signals were identified. The annualized relapse rate was 0.97 during the 1 year before baseline, and decreased to 0.22 after treatment. The mean Expanded Disability Status Scale score remained stable throughout treatment, irrespective of the baseline Expanded Disability Status Scale score (≥3 or <3). Physician clinical global impression was classified as ‘effective’ in the majority of patients (70.3%–90.1%) throughout the treatment period.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Fingolimod was well tolerated and no new safety concerns were identified in this Japanese 2-year post-marketing study. Additionally, fingolimod was effective in preventing MS relapse and physical disability progression in this real-world population comprising mainly relapsing–remitting MS patients.</p>\u0000 </section>\u0000 </div>","PeriodicalId":10193,"journal":{"name":"Clinical and Experimental Neuroimmunology","volume":"16 2","pages":"118-131"},"PeriodicalIF":0.0,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/cen3.12814","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143919960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Diagnostic testing and treatment in Japanese patients with a diagnosis code for chronic inflammatory demyelinating polyradiculoneuropathy: A claims database analysis","authors":"Motoi Kuwahara, Susumu Kusunoki, Ataru Igarashi, Satoshi Akiyama, Taku Fukushima, Mamoru Doi","doi":"10.1111/cen3.12813","DOIUrl":"https://doi.org/10.1111/cen3.12813","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>Reports of real-world data concerning chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) are limited in Japan. This study aimed to investigate the diagnostic testing and treatment performed in patients diagnosed with CIDP in Japan.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Using a Japanese commercial medical information database, we analyzed diagnostic tests, differential diseases, and treatments for patients with a diagnosis code for CIDP between April 13, 2008 and August 31, 2018.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Of the 4564 patients with a diagnosis code for CIDP, 1658 patients were confirmed as newly assigned with the diagnosis code during the study period. Diagnostic tests performed before assignment of the diagnosis code for CIDP included nerve conduction studies in 48.1%, magnetic resonance imaging in 40.5%, and cerebrospinal fluid tests in 38.4%. Other diseases with codes that were assigned at the time of the CIDP diagnosis included Guillain–Barré syndrome in 8.1%, Sjögren syndrome in 4.4%, and systemic lupus erythematosus in 3.7%. Initial treatments performed after the assignment of the new diagnosis code for CIDP were intravenous immunoglobulin (IVIg) in 54.3%, corticosteroids (CS) in 45.4%, and plasmapheresis in 2.3%. The event-free survival rates for predefined specific safety-related events at 1000 d were 90.0% for any event in patients receiving IVIg monotherapy and 71.7% for any event in patients receiving CS monotherapy.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Diagnostic testing and treatment performed in clinical practice was shown through the analysis of real-world data of Japanese patients with a diagnosis code for CIDP. These findings might contribute to developments in clinical practice for Japanese CIDP patients.</p>\u0000 </section>\u0000 </div>","PeriodicalId":10193,"journal":{"name":"Clinical and Experimental Neuroimmunology","volume":"16 2","pages":"98-107"},"PeriodicalIF":0.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/cen3.12813","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143919967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Immunocellular microenvironment of the vascular wall of cerebral aneurysms: What is the role of inflammatory cells in aneurysmal remodeling?","authors":"Vivig Shantha Kumar, Nerella Resheek, Vignarth Shantha Kumar, Ruthvik Thaghalli Sunil Kumar","doi":"10.1111/cen3.12789","DOIUrl":"https://doi.org/10.1111/cen3.12789","url":null,"abstract":"<p>Intracranial aneurysms (IAs) may afflict up to 5% of the general population, or up to 15 million individuals in the US. The two forms of IAs that can be recognized by their shape are saccular and nonsaccular IAs, with uncommon aneurysm types, fusiform and dissecting aneurysms, comprising 13% of nonsaccular IAs. Conceivably, among the various risk factors for IA development, vessel wall inflammation represents a major cause. Accordingly, IAs may not necessarily be the result of passive widening of vessel wall structures, but may also be the result of inflammation and tissue degeneration. Thus, flow-induced vascular remodeling during IA pathogenesis may reflect immune cell infiltration and consequent release of proinflammatory cytokine, chemokine, and matrix metalloproteinase that contribute to vessel wall degeneration and weakening. Thus, infiltrating neutrophils, macrophages, T-lymphocytes and complement factors, and the resulting immune microenvironment may be pertinent in IA pathogenesis.</p>","PeriodicalId":10193,"journal":{"name":"Clinical and Experimental Neuroimmunology","volume":"16 2","pages":"135-147"},"PeriodicalIF":0.0,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143919404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}