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  1. Article ; Online: No clear influence of treatment escalation on flare prevention in serologically active clinically quiescent patients with systemic lupus erythematosus: a retrospective cohort study.

    Ayano, Masahiro / Hirata, Akie / Tokunaga, Shoji / Furuhashi, Hiroko / Kimoto, Yasutaka / Ono, Nobuyuki / Arinobu, Yojiro / Nakashima, Naoki / Akashi, Koichi / Horiuchi, Takahiko / Niiro, Hiroaki

    Rheumatology international

    2024  

    Abstract: This study aimed to clarify the efficacy and safety of treatment escalation by initiating therapeutic agents in serologically active clinically quiescent (SACQ) patients with systemic lupus erythematosus (SLE). We retrospectively evaluated SACQ patients ... ...

    Abstract This study aimed to clarify the efficacy and safety of treatment escalation by initiating therapeutic agents in serologically active clinically quiescent (SACQ) patients with systemic lupus erythematosus (SLE). We retrospectively evaluated SACQ patients with SLE for ≥ 180 days, with the introduction of a therapeutic agent for SLE defined as exposure. The efficacy endpoints included the time to flare and time to remission, whereas the safety endpoint was the incidence of adverse events. The efficacy endpoints were assessed via Cox proportional hazards model with time-dependent covariates, which included exposure, serological activity, and prednisolone dose. Among 109 SACQ patients, 24 were initiated on the following therapeutic agents for SLE: hydroxychloroquine (10 patients), belimumab (6 patients), and immunosuppressive agents (8 patients). A total of 37 patients experienced a flare (8 and 29 patients during exposure and nonexposure periods, respectively). The time to flare was comparable between the exposure and control groups. Among 68 patients who were not in remission at the start of observation, 27 patients achieved remission (5 and 22 patients during exposure and nonexposure periods, respectively). Although both groups had a similar time to remission, the exposure group treated with belimumab had a significantly higher rate of remission than the control group. The adverse events were more frequent during the exposure period than during the nonexposure period. Thus, this study did not reveal a clear influence of treatment escalation on flare prevention and remission achievement.
    Language English
    Publishing date 2024-04-26
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 8286-7
    ISSN 1437-160X ; 0172-8172
    ISSN (online) 1437-160X
    ISSN 0172-8172
    DOI 10.1007/s00296-024-05593-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Anti-dsDNA IgE induces IL-4 production from basophils, potentially involved in B-cell differentiation in systemic lupus erythematosus.

    Fujimoto, Sho / Arinobu, Yojiro / Miyawaki, Kohta / Ayano, Masahiro / Mitoma, Hiroki / Kimoto, Yasutaka / Ono, Nobuyuki / Akashi, Koichi / Horiuchi, Takahiko / Niiro, Hiroaki

    Rheumatology (Oxford, England)

    2023  Volume 62, Issue 10, Page(s) 3480–3489

    Abstract: Objectives: Recently, the involvement of basophils and IgE-type autoantibodies in the pathogenesis of SLE has been elucidated using mouse models; however, few studies have been conducted in humans. In this study, the role of basophils and anti-double- ... ...

    Abstract Objectives: Recently, the involvement of basophils and IgE-type autoantibodies in the pathogenesis of SLE has been elucidated using mouse models; however, few studies have been conducted in humans. In this study, the role of basophils and anti-double-stranded DNA (dsDNA) IgE in SLE was examined using human samples.
    Methods: The correlation between disease activity and serum levels of anti-dsDNA IgE in SLE was evaluated using enzyme-linked immunosorbent assay. Cytokines produced by IgE-stimulated basophils from healthy subjects were assessed using RNA sequences. The interaction of basophils and B cells to promote B cell differentiation was investigated using a co-culture system. The ability of basophils from patients with SLE with anti-dsDNA IgE to create cytokines that may be involved in B cell differentiation in response to dsDNA was examined using real-time PCR.
    Results: Anti-dsDNA IgE levels in the serum of patients with SLE correlated with disease activity. Healthy donor basophils produced IL-3, IL-4 and TGF-β1 after anti-IgE stimulation. Co-culture of B cells with anti-IgE-stimulated basophils increased plasmablasts which were cancelled by neutralizing IL-4. After encountering the antigen, basophils released IL-4 more quickly than follicular helper T cells. Basophils isolated from patients with anti-dsDNA IgE promoted IL-4 expression by adding dsDNA.
    Conclusions: These results suggest that basophils contribute to the pathogenesis of SLE by promoting B cell differentiation via dsDNA-specific IgE in patients similar to the process described in mouse models.
    MeSH term(s) Mice ; Animals ; Humans ; Basophils/metabolism ; Interleukin-4 ; Lupus Erythematosus, Systemic ; Cytokines/metabolism ; DNA ; Immunoglobulin E ; Cell Differentiation
    Chemical Substances anti-IgE antibodies ; Interleukin-4 (207137-56-2) ; Cytokines ; DNA (9007-49-2) ; Immunoglobulin E (37341-29-0)
    Language English
    Publishing date 2023-02-20
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1464822-2
    ISSN 1462-0332 ; 1462-0324
    ISSN (online) 1462-0332
    ISSN 1462-0324
    DOI 10.1093/rheumatology/kead082
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Determination of the factors associated with antigen-specific CD4+ T-cell responses to BNT162b2 in patients with rheumatoid arthritis.

    Sagawa, Fumiaki / Yamada, Hisakata / Ayano, Masahiro / Kimoto, Yasutaka / Mitoma, Hiroki / Ono, Nobuyuki / Arinobu, Yojiro / Kondo, Masakazu / Nakashima, Yasuharu / Akashi, Koichi / Horiuchi, Takahiko / Niiro, Hiroaki

    RMD open

    2024  Volume 10, Issue 1

    Abstract: Objectives: Understanding interpatient variation in CD4+T-cell responses is the bases for understanding the pathogenesis and management of rheumatoid arthritis (RA). We examined immune responses to SARS-CoV-2 vaccine in a cohort of patients with RA and ... ...

    Abstract Objectives: Understanding interpatient variation in CD4+T-cell responses is the bases for understanding the pathogenesis and management of rheumatoid arthritis (RA). We examined immune responses to SARS-CoV-2 vaccine in a cohort of patients with RA and determined factors associated with the responses.
    Methods: Four hundred and thirty-one patients with RA having received two doses of BNT162b2, a messenger RNA-based vaccine for SARS-CoV-2, were included. Vaccine antigen-specific IgG was detected by ELISA, and antigen-specific CD4+T cells were detected by CD154 expression in response to antigenic stimulation. Expression of cytokines was concomitantly detected by intracellular staining. Associations among background variables, antigen-specific antibody production and the CD4+T-cell responses were analysed. Unsupervised hierarchical clustering was performed based on the profiles of antigen-specific cytokine production by CD4+T cells to stratify patients with RA.
    Results: Multivariate analysis indicated that ageing negatively affects CD4+T-cell response as well as antibody production. No association was detected between the presence or the levels of rheumatoid factor/anti-cyclic citrullinated peptide antibody and anti-vaccine immune responses. Methotrexate and prednisolone reduced B cell but not T-cell responses. Conventional immunophenotyping by the expression of chemokine receptors was not associated with the actual CD4+T-cell response, except for T helper cells (Th1). Functional immunophenotyping based on the profiles of antigen-specific cytokine production of CD4+T cells stratified patients with RA into three clusters, among which Th1-dominant type less frequently underwent joint surgery.
    Conclusions: Clinical and immunological variables that are associated with antigen-specific CD4 T-cell responses in patients with RA were determined by analysing immune responses against SARS-CoV-2 vaccine.
    MeSH term(s) Humans ; CD4-Positive T-Lymphocytes/metabolism ; CD4-Positive T-Lymphocytes/pathology ; BNT162 Vaccine ; COVID-19 Vaccines ; Arthritis, Rheumatoid ; Cytokines/metabolism
    Chemical Substances BNT162 Vaccine ; COVID-19 Vaccines ; Cytokines
    Language English
    Publishing date 2024-01-12
    Publishing country England
    Document type Journal Article
    ZDB-ID 2812592-7
    ISSN 2056-5933 ; 2056-5933
    ISSN (online) 2056-5933
    ISSN 2056-5933
    DOI 10.1136/rmdopen-2023-003693
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Determination of the factors associated with antigen-specific CD4+ T-cell responses to BNT162b2 in patients with rheumatoid arthritis

    Takahiko Horiuchi / Hiroaki Niiro / Koichi Akashi / Nobuyuki Ono / Yasutaka Kimoto / Hiroki Mitoma / Yasuharu Nakashima / Hisakata Yamada / Masakazu Kondo / Fumiaki Sagawa / Masahiro Ayano / Yojiro Arinobu

    RMD Open, Vol 10, Iss

    2024  Volume 1

    Abstract: Objectives Understanding interpatient variation in CD4+T-cell responses is the bases for understanding the pathogenesis and management of rheumatoid arthritis (RA). We examined immune responses to SARS-CoV-2 vaccine in a cohort of patients with RA and ... ...

    Abstract Objectives Understanding interpatient variation in CD4+T-cell responses is the bases for understanding the pathogenesis and management of rheumatoid arthritis (RA). We examined immune responses to SARS-CoV-2 vaccine in a cohort of patients with RA and determined factors associated with the responses.Methods Four hundred and thirty-one patients with RA having received two doses of BNT162b2, a messenger RNA-based vaccine for SARS-CoV-2, were included. Vaccine antigen-specific IgG was detected by ELISA, and antigen-specific CD4+T cells were detected by CD154 expression in response to antigenic stimulation. Expression of cytokines was concomitantly detected by intracellular staining. Associations among background variables, antigen-specific antibody production and the CD4+T-cell responses were analysed. Unsupervised hierarchical clustering was performed based on the profiles of antigen-specific cytokine production by CD4+T cells to stratify patients with RA.Results Multivariate analysis indicated that ageing negatively affects CD4+T-cell response as well as antibody production. No association was detected between the presence or the levels of rheumatoid factor/anti-cyclic citrullinated peptide antibody and anti-vaccine immune responses. Methotrexate and prednisolone reduced B cell but not T-cell responses. Conventional immunophenotyping by the expression of chemokine receptors was not associated with the actual CD4+T-cell response, except for T helper cells (Th1). Functional immunophenotyping based on the profiles of antigen-specific cytokine production of CD4+T cells stratified patients with RA into three clusters, among which Th1-dominant type less frequently underwent joint surgery.Conclusions Clinical and immunological variables that are associated with antigen-specific CD4 T-cell responses in patients with RA were determined by analysing immune responses against SARS-CoV-2 vaccine.
    Keywords Medicine ; R
    Language English
    Publishing date 2024-01-01T00:00:00Z
    Publisher BMJ Publishing Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Safety and efficacy of switching immunosuppressive drugs for maintenance treatment in patients with systemic lupus erythematosus: A retrospective cohort study.

    Ayano, Masahiro / Kimoto, Yasutaka / Mitoma, Hiroki / Akahoshi, Mitsuteru / Ono, Nobuyuki / Arinobu, Yojiro / Akashi, Koichi / Horiuchi, Takahiko / Niiro, Hiroaki

    Modern rheumatology

    2022  Volume 33, Issue 5, Page(s) 961–967

    Abstract: Objectives: We aim to clarify the efficacy and safety of switching immunosuppressive drugs and to identify the predictive factors for treatment failure after switching in patients with systemic lupus erythematosus (SLE).: Methods: We retrospectively ... ...

    Abstract Objectives: We aim to clarify the efficacy and safety of switching immunosuppressive drugs and to identify the predictive factors for treatment failure after switching in patients with systemic lupus erythematosus (SLE).
    Methods: We retrospectively evaluated patients with SLE who switched immunosuppressive drugs for any reason in our hospital between 2015 and 2020. The efficacy endpoints were the change in SLE Disease Activity Index 2000 score, prednisolone dose, and disease status over 12 months, as well as treatment continuation rates. The safety endpoint was the frequency of adverse events over 1 year before and after switching. Cox hazard regression analyses were used to identify the predictive factors for treatment failure.
    Results: Thirty-nine patients (age, 41.5 ± 12.6 years; 35 women and 4 men) were analysed. The SLE Disease Activity Index score and prednisolone dose were significantly reduced after switching, with few disease exacerbations over 12 months. The 1- and 2-year continuation rates were 71.4% and 62.3%, respectively. The frequency of adverse events was similar in the year before and after switching the drug. Drug switching due to inadequate efficacy was a predictive factor of less likely treatment failure.
    Conclusions: Immunosuppressive drug switching led to reduced disease activity and decreased glucocorticoid dose without disease exacerbations and severe adverse events.
    MeSH term(s) Male ; Humans ; Female ; Adult ; Middle Aged ; Retrospective Studies ; Treatment Outcome ; Time Factors ; Immunosuppressive Agents/adverse effects ; Lupus Erythematosus, Systemic/drug therapy ; Prednisolone/adverse effects ; Disease Progression
    Chemical Substances Immunosuppressive Agents ; Prednisolone (9PHQ9Y1OLM)
    Language English
    Publishing date 2022-08-26
    Publishing country England
    Document type Journal Article
    ZDB-ID 2078157-X
    ISSN 1439-7609 ; 1439-7595
    ISSN (online) 1439-7609
    ISSN 1439-7595
    DOI 10.1093/mr/roac100
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  6. Article: Comparative efficacy and safety of mizoribine and mycophenolate mofetil for treating systemic lupus erythematosus: a retrospective cohort study.

    Ayano, Masahiro / Kimoto, Yasutaka / Mitoma, Hiroki / Akahoshi, Mitsuteru / Ono, Nobuyuki / Arinobu, Yojiro / Akashi, Koichi / Horiuchi, Takahiko / Niiro, Hiroaki

    Therapeutic advances in musculoskeletal disease

    2022  Volume 14, Page(s) 1759720X221096367

    Abstract: Background: Mizoribine (MZR) is an immunosuppressive agent that selectively inhibits inosine monophosphate dehydrogenase; its actions are considerably similar to those of mycophenolate mofetil (MMF). This study aimed to clarify whether MZR can be a good ...

    Abstract Background: Mizoribine (MZR) is an immunosuppressive agent that selectively inhibits inosine monophosphate dehydrogenase; its actions are considerably similar to those of mycophenolate mofetil (MMF). This study aimed to clarify whether MZR can be a good treatment option for systemic lupus erythematosus (SLE) and to compare the efficacy and safety of MZR and MMF in patients with active SLE.
    Methods: We retrospectively compared the efficacy, continuation rate, and safety of MZR (52 patients) and MMF (31 patients) after adjusting for stabilized inverse probability of treatment weighting based on propensity scores. The efficacy endpoints were as follows: cumulative incidence of lupus low disease activity state (LLDAS) or remission attainment and flares and change in prednisolone dose over 2 years. Drug continuation rates were defined as the time from drug initiation to discontinuation for any cause, owing to the lack of efficacy, or owing to adverse events. The safety endpoint was the frequency of adverse events.
    Results: Overall, 25 (48.1%) and 13 (25.0%) patients in the MZR group and 18 (58.1%) and 15 (48.3%) in the MMF group achieved LLDAS and remission during the follow-up period, respectively; thus, the cumulative incidence of LLDAS and remission attainment of the two groups was similar after adjustment. Prednisolone dose was steadily reduced in both the groups, and the change in prednisolone dose was nearly identical between the two groups. Drug discontinuation rate due to adverse events and the frequency of all adverse events and infections were higher in the MMF group than in the MZR group, albeit without significance after adjustment.
    Conclusion: MZR is as effective as MMF in controlling SLE activity. The adverse events of MZR, whose profile differs from MMF, are comparable to or less than those of MMF. MZR may be a valuable option as an immunosuppressive agent for SLE, as well as MMF.
    Language English
    Publishing date 2022-05-13
    Publishing country England
    Document type Journal Article
    ZDB-ID 2516075-8
    ISSN 1759-7218 ; 1759-720X
    ISSN (online) 1759-7218
    ISSN 1759-720X
    DOI 10.1177/1759720X221096367
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  7. Article ; Online: IgG4-related disease presenting as a paraneoplastic syndrome: report of two cases and literature review.

    Akahoshi, Mitsuteru / Arinobu, Yojiro / Kashiwado, Yusuke / Omoto, Aya / Ayano, Masahiro / Mitoma, Hiroki / Kimoto, Yasutaka / Ono, Nobuyuki / Horiuchi, Takahiko / Niiro, Hiroaki

    Modern rheumatology case reports

    2021  Volume 5, Issue 2, Page(s) 371–376

    Abstract: An association between immunoglobulin G4-related disease (IgG4-RD) and malignancy has been suggested. We report two cases of IgG4-RD with suspected paraneoplastic syndrome. In both patients, malignancy was observed immediately after diagnosis of IgG4-RD, ...

    Abstract An association between immunoglobulin G4-related disease (IgG4-RD) and malignancy has been suggested. We report two cases of IgG4-RD with suspected paraneoplastic syndrome. In both patients, malignancy was observed immediately after diagnosis of IgG4-RD, and surgical resection resulted in spontaneous regression of IgG4-RD. We review the reports on IgG4-RD associated with malignancy, including these two cases, and discuss their relevance.
    MeSH term(s) Humans ; Immunoglobulin G4-Related Disease/diagnosis ; Paraneoplastic Syndromes/etiology
    Language English
    Publishing date 2021-03-15
    Publishing country England
    Document type Case Reports ; Journal Article ; Review
    ISSN 2472-5625
    ISSN (online) 2472-5625
    DOI 10.1080/24725625.2021.1896096
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Predictive factors of fetal and maternal pregnancy outcomes in Japanese patients with systemic lupus erythematosus.

    Irino, Kensuke / Arinobu, Yojiro / Ayano, Masahiro / Kawano, Shotaro / Kimoto, Yasutaka / Mitoma, Hiroki / Akahoshi, Mitsuteru / Akashi, Koichi / Horiuchi, Takahiko / Niiro, Hiroaki

    Lupus

    2021  Volume 30, Issue 10, Page(s) 1637–1643

    Abstract: Objective: The number of pregnant and delivery cases in systemic lupus erythematosus (SLE) patients are increasing due to the advances in therapies. However, there are many problems such as the exacerbation of SLE during pregnancy and the risk of fetal ... ...

    Abstract Objective: The number of pregnant and delivery cases in systemic lupus erythematosus (SLE) patients are increasing due to the advances in therapies. However, there are many problems such as the exacerbation of SLE during pregnancy and the risk of fetal complications. We investigated the impact of both pregnancy on lupus and lupus on pregnancy in Japanese patients.
    Methods: We retrospectively analyzed 64 pregnancies in 39 cases of lupus patients at Kyushu University Hospital, Japan, from October 2002 to July 2018 and then assessed the clinical profiles and maternal and fetal outcomes.
    Results: In terms of the impact of pregnancy on SLE, 29.7% of patients had lupus flare during pregnancy. Multivariate analysis showed that flare rates were significantly higher in patients who discontinued the immunosuppressants when pregnancy was detected or before pregnancy. Pregnancy results were 25.0% for preterm birth, 39.1% for low birth weight infants, and 31.3% for small-for-gestational-age infants. Regarding the effect of SLE on fetal death, the rates of stillbirth were significantly higher in cases whose C3 value at 12 weeks of gestation was lower than before conception. Preterm birth was associated with disease duration and lupus flare during pregnancy.
    Conclusions: Discontinuation of immunosuppressive drugs was a predictive factor for lupus flare during pregnancy. Further, the decrease of C3 levels at 12 weeks of gestation from baseline was a predictive factor for fetal loss. It is essential for lupus pregnant patients to prevent flares, even with the use of immunosuppressive medications.
    MeSH term(s) Female ; Humans ; Immunosuppressive Agents/adverse effects ; Infant, Newborn ; Japan/epidemiology ; Lupus Erythematosus, Systemic/drug therapy ; Lupus Erythematosus, Systemic/epidemiology ; Pregnancy ; Pregnancy Complications/drug therapy ; Pregnancy Complications/epidemiology ; Pregnancy Outcome ; Premature Birth/epidemiology ; Retrospective Studies ; Symptom Flare Up
    Chemical Substances Immunosuppressive Agents
    Language English
    Publishing date 2021-07-16
    Publishing country England
    Document type Journal Article
    ZDB-ID 1154407-7
    ISSN 1477-0962 ; 0961-2033
    ISSN (online) 1477-0962
    ISSN 0961-2033
    DOI 10.1177/09612033211031989
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Hydroxychloroquine versus tacrolimus for the treatment of persistently active systemic lupus erythematosus.

    Ayano, Masahiro / Kimoto, Yasutaka / Mitoma, Hiroki / Akahoshi, Mitsuteru / Ono, Nobuyuki / Arinobu, Yojiro / Akashi, Koichi / Horiuchi, Takahiko / Niiro, Hiroaki

    Modern rheumatology

    2021  Volume 32, Issue 2, Page(s) 345–350

    Abstract: Objectives: We aimed to reveal the effectiveness of hydroxychloroquine (HCQ) compared with tacrolimus (TAC), an immunosuppressive agent, in patients with systemic lupus erythematosus (SLE) with persistent activity on standard treatment.: Methods: We ... ...

    Abstract Objectives: We aimed to reveal the effectiveness of hydroxychloroquine (HCQ) compared with tacrolimus (TAC), an immunosuppressive agent, in patients with systemic lupus erythematosus (SLE) with persistent activity on standard treatment.
    Methods: We retrospectively compared the efficacy and safety of the treatment between 18 patients receiving HCQ and 27 patients receiving TAC. None of the patients were in the lupus low disease activity state (LLDAS) at the beginning of this study. The efficacy end points were the cumulative incidence of LLDAS attainment without additional immunosuppressive agents, drug continuation rate, and treatment failure-free survival. The safety end point was the frequency of adverse events.
    Results: Eight (44.4%) patients in the HCQ group and 10 (37.0%) patients in the TAC group achieved LLDAS during the follow-up period; thus, the cumulative incidences of LLDAS attainment of the two treatments were nearly identical. The drug continuation and treatment failure-free survival rates were also not different between the two groups. The frequency of adverse events showed no clear differences between the two groups.
    Conclusions: The efficacy and safety of an add-on treatment with HCQ are similar to those with TAC. Patients with persistently active SLE can benefit from HCQ in efforts to achieve at least low disease activity.
    MeSH term(s) Antirheumatic Agents/adverse effects ; Humans ; Hydroxychloroquine/adverse effects ; Lupus Erythematosus, Systemic/drug therapy ; Retrospective Studies ; Tacrolimus/adverse effects
    Chemical Substances Antirheumatic Agents ; Hydroxychloroquine (4QWG6N8QKH) ; Tacrolimus (WM0HAQ4WNM)
    Language English
    Publishing date 2021-12-11
    Publishing country England
    Document type Journal Article
    ZDB-ID 2078157-X
    ISSN 1439-7609 ; 1439-7595
    ISSN (online) 1439-7609
    ISSN 1439-7595
    DOI 10.1093/mr/roab010
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Activation of caspase-1 is mediated by stimulation of interferon genes and NLR family pyrin domain containing 3 in monocytes of active systemic lupus erythematosus.

    Inokuchi, Shoichiro / Mitoma, Hiroki / Kawano, Shotaro / Ayano, Masahiro / Kimoto, Yasutaka / Akahoshi, Mitsuteru / Arinobu, Yojiro / Akashi, Koichi / Horiuchi, Takahiko / Niiro, Hiroaki

    Clinical and experimental rheumatology

    2021  Volume 40, Issue 3, Page(s) 522–531

    Abstract: Objectives: Emerging evidence has shown the importance of inflammasome activation in the progression of autoimmune diseases. In this study, we aimed to identify the main cell types activating inflammasome in autoimmune diseases and to clarify the ... ...

    Abstract Objectives: Emerging evidence has shown the importance of inflammasome activation in the progression of autoimmune diseases. In this study, we aimed to identify the main cell types activating inflammasome in autoimmune diseases and to clarify the intracellular pathway of inflammasome activation in systemic lupus erythematosus (SLE).
    Methods: Active caspase-1 in each subset of human peripheral blood cells from healthy controls (n=18), SLE (n=51), and other rheumatic diseases (n=36) were fluorescently probed with FLICA™-caspase-1 followed by flow cytometric analysis. The correlation of caspase-1 activation in monocytes and clinical parameters in SLE patients were evaluated. In-vitro experiments were performed to identify the pathway involved in caspase-1 activation induced by SLE serum in monocytes.
    Results: Active caspase-1 in monocytes was upregulated in SLE patients. Cluster of differentiation 14 (CD14)-positive and CD16-positive monocytes showed considerable activation of caspase-1 compared with the other subsets of monocytes. Serum titres of anti-double stranded DNA antibodies were positively correlated with active caspase-1 in monocytes, and serum complement component 3 and platelet count were negatively correlated with active caspase-1 in monocytes. The SLE serum-induced activation of caspase-1 and IL-1β secretion were down-regulated by inhibition of NLR family pyrin domain containing 3 (NLRP3), cyclic GMP-AMP synthase (cGAS), or stimulator of interferon genes (STING).
    Conclusions: These findings suggest that targeting inflammasome by regulating cGAS/STING and NLRP3 are potential therapeutic strategies for SLE.
    MeSH term(s) Case-Control Studies ; Caspase 1/metabolism ; Humans ; Inflammasomes/metabolism ; Interferons/genetics ; Interferons/metabolism ; Interleukin-1beta/metabolism ; Lupus Erythematosus, Systemic ; Monocytes ; NLR Family, Pyrin Domain-Containing 3 Protein/genetics ; NLR Family, Pyrin Domain-Containing 3 Protein/metabolism
    Chemical Substances Inflammasomes ; Interleukin-1beta ; NLR Family, Pyrin Domain-Containing 3 Protein ; NLRP3 protein, human ; Interferons (9008-11-1) ; Caspase 1 (EC 3.4.22.36)
    Language English
    Publishing date 2021-03-22
    Publishing country Italy
    Document type Journal Article
    ZDB-ID 605886-3
    ISSN 1593-098X ; 0392-856X
    ISSN (online) 1593-098X
    ISSN 0392-856X
    DOI 10.55563/clinexprheumatol/eakvlv
    Database MEDical Literature Analysis and Retrieval System OnLINE

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