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Ichimura Y, Ikei H, Konishi R, Zeniya M, Okai T, Nomura T, Negishi K, Okiyama N. Relevance of leukemia inhibitory factor to anti-melanoma differentiation-associated gene 5 antibody-positive interstitial lung disease. Rheumatology (Oxford) 2022:6795004. [DOI: 10.1093/rheumatology/keac632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 10/04/2022] [Accepted: 10/23/2022] [Indexed: 11/06/2022] Open
Abstract
Abstract
Objectives
Anti-melanoma differentiation associated gene 5 (MDA5) antibody-positive rapidly progressive interstitial lung disease (RP-ILD) is a life-threaten disease of which aetiology remains unclear. To detect potential diagnostic markers, a transcriptome analysis of the lung sample from a case of anti-MDA5 antibody-positive RP-ILD was performed.
Methods
RNA sequencing analyses of an autopsy lung sample from a 74-year-old woman with anti-MDA5 antibody-positive RP-ILD was performed in comparison to an age- and sex-matched normal lung sample. Genes with absolute value fold changes of gene expression ≥ 5 were considered differentially expressed genes, and analyzed by Metascape. The levels of leukaemia inhibitory factor (LIF) were measured in the serum samples from 12 cases of anti-MDA5 antibody-positive ILD, 12 cases of anti-aminoacyl tRNA synthetase (ARS) antibody-positive ILD, 10 cases of anti-transcription intermediary factor 1γ/anti-Mi-2 antibody dermatomyositis (DM) and 12 healthy volunteers.
Results
Gene ontology enrichment analysis on the RNA-sequencing data showed a strong association with antigen binding. Upregulated expressions of interleukin (IL)-1β, IL-6, and LIF were also detected. Serum LIF levels were significantly elevated in anti-MDA5 antibody-positive ILD cases (median [interquartile range], 32.4 [13.2–125.7] pg/ml) when compared with anti-ARS antibody-positive ILD cases (4.9 [3.1–19.7] pg/ml, P < 0.05) and DM cases (5.3 [3.9–9.7] pg/ml, P < 0.05).
Conclusion
Our present study suggested that upregulation of LIF might be a new potential disease marker specific for anti-MDA5 antibody-positive ILD.
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Affiliation(s)
- Yuki Ichimura
- Department of Dermatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University , Tokyo, Japan
- Department of Dermatology, Faculty of Medicine, University of Tsukuba , Ibaraki, Japan
| | - Hiroyuki Ikei
- Department of Internal Medicine, Kawakita General Hospital , Tokyo, Japan
| | - Risa Konishi
- Department of Dermatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University , Tokyo, Japan
- Department of Dermatology, Faculty of Medicine, University of Tsukuba , Ibaraki, Japan
| | - Moko Zeniya
- Department of Internal Medicine, Kawakita General Hospital , Tokyo, Japan
| | - Takahiro Okai
- Department of Internal Medicine, Kawakita General Hospital , Tokyo, Japan
| | - Toshifumi Nomura
- Department of Dermatology, Faculty of Medicine, University of Tsukuba , Ibaraki, Japan
| | - Kousuke Negishi
- Department of Internal Medicine, Kawakita General Hospital , Tokyo, Japan
| | - Naoko Okiyama
- Department of Dermatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University , Tokyo, Japan
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Pape S, Snijders RJALM, Gevers TJG, Chazouilleres O, Dalekos GN, Hirschfield GM, Lenzi M, Trauner M, Manns MP, Vierling JM, Montano-Loza AJ, Lohse AW, Schramm C, Drenth JPH, Heneghan MA, Alvarez F, Andrade R, Arikan C, Assis D, Bardou-Jacquet E, Biewenga M, Cancado E, Cazzagon N, Chazouillères O, Colloredo G, Cuarterolo M, Dalekos G, Debray D, Robles-Díaz M, Drenth J, Dyson J, Efe C, Engel B, Ferri S, Fontana R, Gatselis N, Gerussi A, Halilbasic E, Halliday N, Heneghan M, Hirschfield G, van Hoek B, Hørby Jørgensen M, Indolfini G, Iorio R, Jeong S, Jones D, Kelly D, Kerkar N, Lacaille F, Lammert C, Leggett B, Lenzi M, Levy C, Liberal R, Lleo A, Lohse A, Ines Lopez S, de Martin E, McLin V, Mieli-Vergani G, Milkiewicz P, Mohan N, Muratori L, Nebbia G, van Nieuwkerk C, Oo Y, Ortega A, Páres A, Pop T, Pratt D, Purnak T, Ranucci G, Rushbrook S, Schramm C, Stättermayer A, Swain M, Tanaka A, Taubert R, Terrabuio D, Terziroli B, Trauner M, Valentino P, van den Brand F, Villamil A, Wahlin S, Ytting H, Zachou K, Zeniya M. Systematic review of response criteria and endpoints in autoimmune hepatitis by the International Autoimmune Hepatitis Group. J Hepatol 2022; 76:841-849. [PMID: 35066089 DOI: 10.1016/j.jhep.2021.12.041] [Citation(s) in RCA: 53] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 11/18/2021] [Accepted: 12/11/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS Autoimmune hepatitis (AIH) has been well characterised and codified through the development of diagnostic criteria. These criteria have been adapted and simplified and are widely used in clinical practice. However, there is a need to update and precisely define the criteria for both treatment response and treatment. METHODS A systematic review was performed and a modified Delphi consensus process was used to identify and redefine the response criteria in autoimmune hepatitis. RESULTS The consensus process initiated by the International Autoimmune Hepatitis Group proposes that the term 'complete biochemical response' defined as 'normalization of serum transaminases and IgG below the upper limit of normal' be adopted to include a time point at 6 months after initiation of treatment. An insufficient response by 6 months was a failure to meet the above definition. Non-response was defined as '<50% decrease of serum transaminases within 4 weeks after initiation of treatment'. Remission is defined as liver histology with a Hepatitis Activity Index <4/18. Intolerance to treatment was agreed to stand for 'any adverse event possibly related to treatment leading to potential drug discontinuation'. CONCLUSIONS These definitions provide a simple and reproducible framework to define treatment response and non-response, irrespective of the therapeutic intervention. A consensus on endpoints is urgently required to set a global standard for the reporting of study results and to enable inter-study comparisons. Future prospective database studies are needed to validate these endpoints. LAY SUMMARY Consensus among international experts on response criteria and endpoints in autoimmune hepatitis is lacking. A consensus on endpoints is urgently required to set a global standard for the reporting of study results and to enable the comparison of results between clinical trials. Therefore, the International Autoimmune Hepatitis Group (IAIHG) herein presents a statement on 5 agreed response criteria and endpoints: complete biochemical response, insufficient response, non-response, remission, and intolerance to treatment, which can be used to guide future reporting.
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Affiliation(s)
- Simon Pape
- Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands; European Reference Network on Hepatological Diseases (ERN RARE-LIVER)
| | - Romée J A L M Snijders
- Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands; European Reference Network on Hepatological Diseases (ERN RARE-LIVER)
| | - Tom J G Gevers
- Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands; Division of Gastroenterology and Hepatology, Maastricht University Medical Center, Maastricht 6229HX, The Netherlands; European Reference Network on Hepatological Diseases (ERN RARE-LIVER)
| | - Oliver Chazouilleres
- Hepatology Department, Reference Center for Inflammatory Biliary Diseases and Autoimmune Hepatitis, Saint-Antoine Hospital Assistance Publique-Hôpitaux de Paris, Paris, France; European Reference Network on Hepatological Diseases (ERN RARE-LIVER)
| | - George N Dalekos
- Department of Medicine and Research Laboratory of Internal Medicine, University of Thessaly Medical School, Larissa, Greece
| | - Gideon M Hirschfield
- Toronto Centre for Liver Disease, University Health Network, University of Toronto, Toronto, Canada
| | - Marco Lenzi
- Department of Medical and Surgical Sciences, Sant'Orsola-Malpighi, University of Bologna, Bologna, Italy
| | - Michael Trauner
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria; European Reference Network on Hepatological Diseases (ERN RARE-LIVER)
| | - Michael P Manns
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany; European Reference Network on Hepatological Diseases (ERN RARE-LIVER)
| | - John M Vierling
- Departments of Medicine and Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Aldo J Montano-Loza
- Division of Gastroenterology and Hepatology, University of Alberta Hospital, Edmonton, Canada
| | - Ansgar W Lohse
- 1(st) Department of Internal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; European Reference Network on Hepatological Diseases (ERN RARE-LIVER)
| | - Christoph Schramm
- 1(st) Department of Internal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Martin Zeitz Centre for Rare Diseases, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany; European Reference Network on Hepatological Diseases (ERN RARE-LIVER)
| | - Joost P H Drenth
- Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands; European Reference Network on Hepatological Diseases (ERN RARE-LIVER)
| | - Michael A Heneghan
- Institute of Liver Studies, King's College Hospital, London, United Kingdom; European Reference Network on Hepatological Diseases (ERN RARE-LIVER).
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Furusho T, Sohara E, Mandai S, Kikuchi H, Takahashi N, Fujimaru T, Hashimoto H, Arai Y, Ando F, Zeniya M, Mori T, Susa K, Isobe K, Nomura N, Yamamoto K, Okado T, Rai T, Uchida S. Renal TNFα activates the WNK phosphorylation cascade and contributes to salt-sensitive hypertension in chronic kidney disease. Kidney Int 2020; 97:713-727. [PMID: 32059997 DOI: 10.1016/j.kint.2019.11.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 11/19/2019] [Accepted: 11/22/2019] [Indexed: 12/13/2022]
Abstract
The inappropriate over-activation of the with-no-lysine kinase (WNK)-STE20/SPS1-related proline/alanine-rich kinase (SPAK)-sodium chloride cotransporter (NCC) phosphorylation cascade increases sodium reabsorption in distal kidney nephrons, resulting in salt-sensitive hypertension. Although chronic kidney disease (CKD) is a common cause of salt-sensitive hypertension, the involvement of the WNK phosphorylation cascade is unknown. Moreover, the effect of immune systems on WNK kinases has not been investigated despite the fact that immune systems are important for salt sensitivity. Here we demonstrate that the protein abundance of WNK1, but not of WNK4, was increased at the distal convoluted tubules in the aristolochic acid nephropathy mouse model of CKD. Accordingly, the phosphorylation of both SPAK and NCC was also increased. Moreover, a high-salt diet did not adequately suppress activation of the WNK1-SPAK-NCC phosphorylation cascade in this model, leading to salt-sensitive hypertension. WNK1 also was increased in adenine nephropathy, but not in subtotal nephrectomy, models of CKD. By comparing the transcripts of these three models focusing on immune systems, we hypothesized that tumor necrosis factor (TNF)-α regulates WNK1 protein expression. In fact, TNF-α increased WNK1 protein expression in cultured renal tubular cells by reducing the transcription and protein levels of NEDD4-2 E3-ligase, which degrades WNK1 protein. Furthermore, the TNF-α inhibitor etanercept reversed the reduction of NEDD4-2 expression and upregulation of the WNK1-SPAK-NCC phosphorylation cascade in distal convoluted tubules in vivo in the aristolochic acid nephropathy model. Thus, salt-sensitive hypertension is induced in CKD via activation of the renal WNK1- SPAK-NCC phosphorylation cascade by TNF-α, reflecting a link with the immune system.
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Affiliation(s)
- Taisuke Furusho
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Eisei Sohara
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
| | - Shintaro Mandai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hiroaki Kikuchi
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Naohiro Takahashi
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takuya Fujimaru
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hiroko Hashimoto
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yohei Arai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Fumiaki Ando
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Moko Zeniya
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takayasu Mori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Koichiro Susa
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kiyoshi Isobe
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Naohiro Nomura
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kohei Yamamoto
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tomokazu Okado
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tatemitsu Rai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shinichi Uchida
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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Suzuki S, Naito S, Numasawa Y, Asada M, Shoji N, Zeniya M, Takahashi D, Sato H, Iimori S, Nomura N, Sohara E, Okado T, Ishiwata Y, Nagata M, Rai T, Yokota T, Uchida S. Encephalopathy Induced by High Plasma and Cerebrospinal Fluid Ceftriaxone Concentrations in a Hemodialysis Patient. Intern Med 2019; 58:1775-1779. [PMID: 30799339 PMCID: PMC6630125 DOI: 10.2169/internalmedicine.1785-18] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Encephalopathy is a rare side effect of cephalosporin treatment. We herein present a case of encephalopathy induced by ceftriaxone, a third-generation cephalosporin, in a patient with renal failure. An 86-year-old woman on maintenance hemodialysis received ceftriaxone for Helicobacter cinaedi bacteremia. Her mental status deteriorated during antibiotic treatment, and an electroencephalogram revealed triphasic waves predominantly in the frontal area. Her consciousness improved after the discontinuation of the antibiotic due to the suspicion of ceftriaxone-induced encephalopathy. This is the first reported case of encephalopathy associated with high plasma and cerebrospinal fluid ceftriaxone concentrations, and provides significant evidence for a causal relationship between the administration of ceftriaxone and the onset of encephalopathy.
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Affiliation(s)
- Soichiro Suzuki
- Department of Nephrology, Tokyo Medical and Dental University, Japan
| | - Shotaro Naito
- Department of Nephrology, Tokyo Medical and Dental University, Japan
| | - Yoshiyuki Numasawa
- Department of Neurology and Neurological Science, Tokyo Medical and Dental University, Japan
| | - Mizuho Asada
- Department of Pharmacy, Medical Hospital, Tokyo Medical and Dental University, Japan
| | - Norikazu Shoji
- Department of Nephrology, Tokyo Medical and Dental University, Japan
| | - Moko Zeniya
- Department of Nephrology, Tokyo Medical and Dental University, Japan
| | - Daiei Takahashi
- Department of Nephrology, Tokyo Medical and Dental University, Japan
| | - Hidehiko Sato
- Department of Nephrology, Tokyo Medical and Dental University, Japan
| | - Soichiro Iimori
- Department of Nephrology, Tokyo Medical and Dental University, Japan
| | - Naohiro Nomura
- Department of Nephrology, Tokyo Medical and Dental University, Japan
| | - Eisei Sohara
- Department of Nephrology, Tokyo Medical and Dental University, Japan
| | - Tomokazu Okado
- Department of Nephrology, Tokyo Medical and Dental University, Japan
| | - Yasuyoshi Ishiwata
- Department of Pharmacy, Medical Hospital, Tokyo Medical and Dental University, Japan
| | - Masashi Nagata
- Department of Pharmacy, Medical Hospital, Tokyo Medical and Dental University, Japan
| | - Tatemitsu Rai
- Department of Nephrology, Tokyo Medical and Dental University, Japan
| | - Takanori Yokota
- Department of Neurology and Neurological Science, Tokyo Medical and Dental University, Japan
| | - Shinichi Uchida
- Department of Nephrology, Tokyo Medical and Dental University, Japan
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Mandai S, Sato H, Iimori S, Naito S, Mori T, Takahashi D, Zeniya M, Nomura N, Sohara E, Okado T, Uchida S, Fushimi K, Rai T. Dialysis Case Volume Associated With In-Hospital Mortality in Maintenance Dialysis Patients. Kidney Int Rep 2018; 3:356-363. [PMID: 29725639 PMCID: PMC5932122 DOI: 10.1016/j.ekir.2017.10.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 10/11/2017] [Accepted: 10/30/2017] [Indexed: 11/24/2022] Open
Abstract
Introduction Accumulating evidence suggests that a large hospital volume (HV) is associated with favorable outcomes in various diseases or surgical procedures. The aim of this study is to clarify the correlation of HV and dialysis case volume (DCV) with in-hospital death in patients on maintenance dialysis. Methods The study cohort was derived from the Diagnosis Procedure Combination database, a national inpatient database in Japan, from 2012 to 2014. We included 382,689 admissions of maintenance dialysis patients over the age of 20 years in the analysis. HV was defined as the mean number of daily hospitalized patients, and DCV was defined as the mean number of annually hospitalized patients on maintenance dialysis. The primary outcome was in-hospital all-cause mortality, evaluated using multivariable logistic regression models across the respective quartiles of HV and DCV. Results The mean age of participants was 69 ± 12 years; 94% were receiving hemodialysis, and 21,182 patients (5.5%) died after hospitalization. In unadjusted models, larger HV and DCV were both associated with lower in-hospital mortality. However, this association remained significant only for DCV after adjustment for potential confounders, with multivariable-adjusted odds ratios of 0.82 (95% confidence interval [CI], 0.79–0.85), 0.76 (95% CI, 0.73–0.80), and 0.68 (95% CI, 0.65–0.72) for DCV 249 to 432, 433 to 713, and ≥714 (vs. ≤ 248) admissions per year, respectively. Multivariable subgroup analyses determined that this association was independent of age, sex, dialysis modality, Charlson Comorbidity Index, and emergency admission. Conclusion Selective admission to hospitals with a large DCV may improve outcomes of dialysis patients.
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Affiliation(s)
- Shintaro Mandai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hidehiko Sato
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Soichiro Iimori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shotaro Naito
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takayasu Mori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Daiei Takahashi
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Moko Zeniya
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Naohiro Nomura
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Eisei Sohara
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tomokazu Okado
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shinichi Uchida
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kiyohide Fushimi
- Department of Health Policy and Informatics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tatemitsu Rai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
- Correspondence: Tatemitsu Rai, Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan.
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Ishikawa S, Naito S, Iimori S, Takahashi D, Zeniya M, Sato H, Nomura N, Sohara E, Okado T, Uchida S, Rai T. Loop diuretics are associated with greater risk of sarcopenia in patients with non-dialysis-dependent chronic kidney disease. PLoS One 2018; 13:e0192990. [PMID: 29447254 PMCID: PMC5814019 DOI: 10.1371/journal.pone.0192990] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 02/04/2018] [Indexed: 12/21/2022] Open
Abstract
Introduction Sarcopenia, the age-related loss of muscle mass and function, frequently accompanies chronic kidney disease. The aim of this study was to clarify the prevalence and the risk factors for sarcopenia among patients with non-dialysis-dependent chronic kidney disease (NDD-CKD), focusing on the use of drugs. Methods We conducted a cross-sectional analysis on a cohort of 260 patients with NDD-CKD in a university hospital, recruited between June 2016 and March 2017. We extracted data on patient gender, age, cause of chronic kidney disease, use of drugs, and comorbidities that could potentially affect the prevalence of sarcopenia. Sarcopenia was diagnosed using the criteria of the Asian Working Group for Sarcopenia. Logistic regression analysis was performed to analyze the association of each factor on the prevalence of sarcopenia. Results 25.0% of our study subjects had sarcopenia. Multivariable analysis revealed that an increased risk of sarcopenia was significantly associated with age, male gender, body mass index, diabetes mellitus, and loop diuretic use (odds ratio, 4.59: 95% confidence interval, 1.81–11.61: P-value 0.001). Conclusions In our cohort, the prevalence of sarcopenia in patients with NDD-CKD was high, and diuretics use, particularly loop diuretic use, was suggested to be a risk factor of sarcopenia. Although loop diuretics are commonly used in patients with CKD, careful consideration of the risk of sarcopenia may be necessary.
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Affiliation(s)
- Seiko Ishikawa
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shotaro Naito
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
- * E-mail:
| | - Soichiro Iimori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Daiei Takahashi
- Department of Nephrology, Tokyo Metropolitan Ohtsuka Hospital, Tokyo, Japan
| | - Moko Zeniya
- Department of Internal Medicine, Tohto Bunkyo Hospital, Tokyo, Japan
| | - Hidehiko Sato
- Department of Nephrology, Nitobe Memorial Nakano General Hospital, Tokyo, Japan
| | - Naohiro Nomura
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Eisei Sohara
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tomokazu Okado
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shinichi Uchida
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tatemitsu Rai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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7
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Zeniya M, Mori T, Yui N, Nomura N, Mandai S, Isobe K, Chiga M, Sohara E, Rai T, Uchida S. The proteasome inhibitor bortezomib attenuates renal fibrosis in mice via the suppression of TGF-β1. Sci Rep 2017; 7:13086. [PMID: 29026167 PMCID: PMC5638992 DOI: 10.1038/s41598-017-13486-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 09/26/2017] [Indexed: 12/25/2022] Open
Abstract
Kidney fibrosis and fibrogenesis significantly exacerbate chronic kidney disease (CKD) progression and are essential therapeutic targets. Bortezomib (BZM) is a proteasome inhibitor used for the treatment of multiple myeloma (MM). Several studies have demonstrated that BZM attenuates renal impairment in patients with MM, although this effect is generally considered to be the result of MM remission. Recently, several studies on BZM reported anti-fibrotic effects on liver and skin in experimental animal models. However, its effect on renal fibrosis has yet to be examined. Here, we investigated the anti-fibrotic effects of BZM in an experimental mouse model of fibrosis that uses aristolochic acid I (AA). Ten weeks of AA administration with BZM treatment twice a week significantly attenuated AA-induced renal dysfunction and albuminuria, reduced the expression of renal fibrosis-related proteins and kidney injury markers, such as αSMA, Kim1, and Ngal, and prevented renal fibrosis at the level of histopathology. Furthermore, pathological activation of TGFβ1-Smad3 signaling and apoptosis, essential pathophysiological causes of AA-induced nephropathy (AAN), were ameliorated by BZM, suggesting this mechanism may be involved in improving fibrosis in AAN. In conclusion, BZM directly inhibits renal fibrosis in CKD via suppression of TGFβ1-Smad3 signaling and is promising in terms of drug repositioning.
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Affiliation(s)
- Moko Zeniya
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takayasu Mori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
| | - Naofumi Yui
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Naohiro Nomura
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shintaro Mandai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kiyoshi Isobe
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Motoko Chiga
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Eisei Sohara
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tatemitsu Rai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shinichi Uchida
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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8
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Yoshizaki Y, Mori T, Ishigami-Yuasa M, Kikuchi E, Takahashi D, Zeniya M, Nomura N, Mori Y, Araki Y, Ando F, Mandai S, Kasagi Y, Arai Y, Sasaki E, Yoshida S, Kagechika H, Rai T, Uchida S, Sohara E. Drug-Repositioning Screening for Keap1-Nrf2 Binding Inhibitors using Fluorescence Correlation Spectroscopy. Sci Rep 2017. [PMID: 28638054 PMCID: PMC5479848 DOI: 10.1038/s41598-017-04233-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The Kelch-like ECH-associating protein 1 (Keap1)-nuclear factor erythroid 2-related factor 2 (Nrf2)-antioxidant response element (ARE) signaling pathway is the major regulator of cytoprotective responses to oxidative and electrophilic stress. The Cul3/Keap1 E3 ubiquitin ligase complex interacts with Nrf2, leading to Nrf2 ubiquitination and degradation. In this study, we focused on the disruption of the Keap1-Nrf2 interaction to upregulate Nrf2 expression and the transcription of ARE-controlled cytoprotective oxidative stress response enzymes, such as HO-1. We completed a drug-repositioning screening for inhibitors of Keap1-Nrf2 protein-protein interactions using a newly established fluorescence correlation spectroscopy (FCS) screening system. The binding reaction between Nrf2 and Keap1 was successfully detected with a KD of 2.6 μM using our FCS system. The initial screening of 1,633 drugs resulted in 12 candidate drugs. Among them, 2 drugs significantly increased Nrf2 protein levels in HepG2 cells. These two promising drugs also upregulated ARE gene promoter activity and increased HO-1 mRNA expression, which confirms their ability to dissociate Nrf2 and Keap1. Thus, drug-repositioning screening for Keap1-Nrf2 binding inhibitors using FCS enabled us to find two promising known drugs that can induce the activation of the Nrf2-ARE pathway.
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Affiliation(s)
- Yuki Yoshizaki
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takayasu Mori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Mari Ishigami-Yuasa
- Chemical Biology Screening Center and Department of Medicinal and Organic Chemistry, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Eriko Kikuchi
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Daiei Takahashi
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Moko Zeniya
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Naohiro Nomura
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yutaro Mori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuya Araki
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Fumiaki Ando
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shintaro Mandai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuri Kasagi
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yohei Arai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Emi Sasaki
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Sayaka Yoshida
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hiroyuki Kagechika
- Chemical Biology Screening Center and Department of Medicinal and Organic Chemistry, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tatemitsu Rai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shinichi Uchida
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Eisei Sohara
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
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9
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Kasagi Y, Takahashi D, Aida T, Nishida H, Nomura N, Zeniya M, Mori T, Sasaki E, Ando F, Rai T, Uchida S, Sohara E. Impaired degradation of medullary WNK4 in the kidneys of KLHL2 knockout mice. Biochem Biophys Res Commun 2017; 487:368-374. [PMID: 28414128 DOI: 10.1016/j.bbrc.2017.04.068] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 04/13/2017] [Indexed: 12/16/2022]
Abstract
Mutations in the with-no-lysine kinase 1 (WNK1), WNK4, Kelch-like 3 (KLHL3), and Cullin3 (CUL3) genes were identified as being responsible for hereditary hypertensive disease pseudohypoaldosteronism type II (PHAII). Normally, the KLHL3/CUL3 ubiquitin ligase complex degrades WNKs. In PHAII, the loss of interaction between KLHL3 and WNK4 increases levels of WNKs because of impaired ubiquitination, leading to abnormal over-activation of the WNK-OSR1/SPAK-NCC cascade in the kidney's distal convoluted tubules (DCT). KLHL2, which is highly homologous to KLHL3, was reported to ubiquitinate and degrade WNKs in vitro. Mutations in KLHL2 have not been reported in patients with PHAII, suggesting that KLHL2 plays a different physiological role than that played by KLHL3 in the kidney. To investigate the physiological roles of KLHL2 in the kidney, we generated KLHL2-/- mice. KLHL2-/- mice did not exhibit increased phosphorylation of the OSR1/SPAK-NCC cascade and PHAII-like phenotype. KLHL2 was predominantly expressed in the medulla compared with the cortex. Accordingly, medullary WNK4 protein levels were significantly increased in the kidneys of KLHL2-/- mice. KLHL2 is indeed a physiological regulator of WNK4 in vivo; however, its function might be different from that of KLHL3 because KLHL2 mainly localized in medulla.
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Affiliation(s)
- Yuri Kasagi
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Daiei Takahashi
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Tomomi Aida
- Laboratory of Molecular Neuroscience, Medical Research Institute (MRI), Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan; Laboratory of Recombinant Animals, MRI, Tokyo Medical and Dental University, Chiyoda, Tokyo 101-0062, Japan
| | - Hidenori Nishida
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Naohiro Nomura
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Moko Zeniya
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Takayasu Mori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Emi Sasaki
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Fumiaki Ando
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Tatemitsu Rai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Shinichi Uchida
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Eisei Sohara
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan.
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10
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Sasaki E, Susa K, Mori T, Isobe K, Araki Y, Inoue Y, Yoshizaki Y, Ando F, Mori Y, Mandai S, Zeniya M, Takahashi D, Nomura N, Rai T, Uchida S, Sohara E. KLHL3 Knockout Mice Reveal the Physiological Role of KLHL3 and the Pathophysiology of Pseudohypoaldosteronism Type II Caused by Mutant KLHL3. Mol Cell Biol 2017; 37:e00508-16. [PMID: 28052936 PMCID: PMC5359427 DOI: 10.1128/mcb.00508-16] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Revised: 10/17/2016] [Accepted: 12/29/2016] [Indexed: 01/06/2023] Open
Abstract
Mutations in the with-no-lysine kinase 1 (WNK1), WNK4, kelch-like 3 (KLHL3), and cullin3 (CUL3) genes are known to cause the hereditary disease pseudohypoaldosteronism type II (PHAII). It was recently demonstrated that this results from the defective degradation of WNK1 and WNK4 by the KLHL3/CUL3 ubiquitin ligase complex. However, the other physiological in vivo roles of KLHL3 remain unclear. Therefore, here we generated KLHL3-/- mice that expressed β-galactosidase (β-Gal) under the control of the endogenous KLHL3 promoter. Immunoblots of β-Gal and LacZ staining revealed that KLHL3 was expressed in some organs, such as brain. However, the expression levels of WNK kinases were not increased in any of these organs other than the kidney, where WNK1 and WNK4 increased in KLHL3-/- mice but not in KLHL3+/- mice. KLHL3-/- mice also showed PHAII-like phenotypes, whereas KLHL3+/- mice did not. This clearly demonstrates that the heterozygous deletion of KLHL3 was not sufficient to cause PHAII, indicating that autosomal dominant type PHAII is caused by the dominant negative effect of mutant KLHL3. We further demonstrated that the dimerization of KLHL3 can explain this dominant negative effect. These findings could help us to further understand the physiological roles of KLHL3 and the pathophysiology of PHAII caused by mutant KLHL3.
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Affiliation(s)
- Emi Sasaki
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Koichiro Susa
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takayasu Mori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kiyoshi Isobe
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuya Araki
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuichi Inoue
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuki Yoshizaki
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Fumiaki Ando
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yutaro Mori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shintaro Mandai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Moko Zeniya
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Daiei Takahashi
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Naohiro Nomura
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tatemitsu Rai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shinichi Uchida
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Eisei Sohara
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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11
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Takahashi D, Mori T, Sohara E, Tanaka M, Chiga M, Inoue Y, Nomura N, Zeniya M, Ochi H, Takeda S, Suganami T, Rai T, Uchida S. WNK4 is an Adipogenic Factor and Its Deletion Reduces Diet-Induced Obesity in Mice. EBioMedicine 2017; 18:118-127. [PMID: 28314693 PMCID: PMC5405161 DOI: 10.1016/j.ebiom.2017.03.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 02/27/2017] [Accepted: 03/07/2017] [Indexed: 11/25/2022] Open
Abstract
The with-no-lysine kinase (WNK) 4 gene is a causative gene in pseudohypoaldosteronism type II. Although WNKs are widely expressed in the body, neither their metabolic functions nor their extrarenal role is clear. In this study, we found that WNK4 was expressed in mouse adipose tissue and 3T3-L1 adipocytes. In mouse primary preadipocytes and in 3T3-L1 adipocytes, WNK4 was markedly induced in the early phase of adipocyte differentiation. WNK4 expression preceded the expression of key transcriptional factors PPARγ and C/EBPα. WNK4-siRNA-transfected 3T3-L1 cells and human mesenchymal stem cells showed reduced expression of PPARγ and C/EBPα and lipid accumulation. WNK4 protein affected the DNA-binding ability of C/EBPβ and thereby reduced PPARγ expression. In the WNK4−/− mice, PPARγ and C/EBPα expression were decreased in adipose tissues, and the mice exhibited partial resistance to high-fat diet-induced adiposity. These data suggest that WNK4 may be a proadipogenic factor, and offer insights into the relationship between WNKs and energy metabolism. WNK4 regulates adipocyte differentiation in mouse and human preadipocytes. WNK4−/− mice exhibit reduced adiposity and increased insulin sensitivity. WNK4 may be a drug target for diet-induced obesity and salt-sensitive hypertension.
The with-no-lysine kinase (WNK) 4 gene is a causative gene in pseudohypoaldosteronism type II, a hereditary hypertensive disease. Although WNKs are widely expressed in the body and are involved in the pathogenesis of hypertension, neither their metabolic functions nor their extrarenal role is clear. This study demonstrated a contribution of WNK4 to the regulation of core transcriptional factors for adipogenesis and that its depletion indicates some beneficial effects for obesity by a high-fat diet. This study suggests a role of hypertension-causing WNK4 as a proadipogenic factor and offers insights into the relationship between WNKs and energy metabolism.
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Affiliation(s)
- Daiei Takahashi
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Takayasu Mori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Eisei Sohara
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Miyako Tanaka
- Department of Molecular Medicine and Metabolism, Research Institute of Environmental Medicine, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Motoko Chiga
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Yuichi Inoue
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Naohiro Nomura
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Moko Zeniya
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Hiroki Ochi
- Department of Physiology and Cell Biology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Shu Takeda
- Department of Physiology and Cell Biology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Takayoshi Suganami
- Department of Molecular Medicine and Metabolism, Research Institute of Environmental Medicine, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Tatemitsu Rai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Shinichi Uchida
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan..
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12
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Zeniya M, Morimoto N, Takahashi D, Mori Y, Mori T, Ando F, Araki Y, Yoshizaki Y, Inoue Y, Isobe K, Nomura N, Oi K, Nishida H, Sasaki S, Sohara E, Rai T, Uchida S. Kelch-Like Protein 2 Mediates Angiotensin II-With No Lysine 3 Signaling in the Regulation of Vascular Tonus. J Am Soc Nephrol 2015; 26:2129-38. [PMID: 25556166 DOI: 10.1681/asn.2014070639] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Accepted: 10/21/2014] [Indexed: 12/30/2022] Open
Abstract
Recently, the kelch-like protein 3 (KLHL3)-Cullin3 complex was identified as an E3 ubiquitin ligase for with no lysine (WNK) kinases, and the impaired ubiquitination of WNK4 causes pseudohypoaldosteronism type II (PHAII), a hereditary hypertensive disease. However, the involvement of WNK kinase regulation by ubiquitination in situations other than PHAII has not been identified. Previously, we identified the WNK3-STE20/SPS1-related proline/alanine-rich kinase-Na/K/Cl cotransporter isoform 1 phosphorylation cascade in vascular smooth muscle cells and found that it constitutes an important mechanism of vascular constriction by angiotensin II (AngII). In this study, we investigated the involvement of KLHL proteins in AngII-induced WNK3 activation of vascular smooth muscle cells. In the mouse aorta and mouse vascular smooth muscle (MOVAS) cells, KLHL3 was not expressed, but KLHL2, the closest homolog of KLHL3, was expressed. Salt depletion and acute infusion of AngII decreased KLHL2 and increased WNK3 levels in the mouse aorta. Notably, the AngII-induced changes in KLHL2 and WNK3 expression occurred within minutes in MOVAS cells. Results of KLHL2 overexpression and knockdown experiments in MOVAS cells confirmed that KLHL2 is the major regulator of WNK3 protein abundance. The AngII-induced decrease in KLHL2 was not caused by decreased transcription but increased autophagy-mediated degradation. Furthermore, knockdown of sequestosome 1/p62 prevented the decrease in KLHL2, suggesting that the mechanism of KLHL2 autophagy could be selective autophagy mediated by sequestosome 1/p62. Thus, we identified a novel component of signal transduction in AngII-induced vascular contraction that could be a promising drug target.
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Affiliation(s)
- Moko Zeniya
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Nobuhisa Morimoto
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Daiei Takahashi
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yutaro Mori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takayasu Mori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Fumiaki Ando
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuya Araki
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuki Yoshizaki
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuichi Inoue
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kiyoshi Isobe
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Naohiro Nomura
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Katsuyuki Oi
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hidenori Nishida
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Sei Sasaki
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Eisei Sohara
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tatemitsu Rai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shinichi Uchida
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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13
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Zeniya M. [Kelch-like protein 2 mediates angiotensin II--With no lysine 3 signaling in the regulation of vascular tonus]. Nihon Jinzo Gakkai Shi 2015; 57:1323-1326. [PMID: 26817160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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14
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Kikuchi E, Mori T, Zeniya M, Isobe K, Ishigami-Yuasa M, Fujii S, Kagechika H, Ishihara T, Mizushima T, Sasaki S, Sohara E, Rai T, Uchida S. Discovery of Novel SPAK Inhibitors That Block WNK Kinase Signaling to Cation Chloride Transporters. J Am Soc Nephrol 2014; 26:1525-36. [PMID: 25377078 DOI: 10.1681/asn.2014060560] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Accepted: 09/20/2014] [Indexed: 12/21/2022] Open
Abstract
Upon activation by with-no-lysine kinases, STE20/SPS1-related proline-alanine-rich protein kinase (SPAK) phosphorylates and activates SLC12A transporters such as the Na(+)-Cl(-) cotransporter (NCC) and Na(+)-K(+)-2Cl(-) cotransporter type 1 (NKCC1) and type 2 (NKCC2); these transporters have important roles in regulating BP through NaCl reabsorption and vasoconstriction. SPAK knockout mice are viable and display hypotension with decreased activity (phosphorylation) of NCC and NKCC1 in the kidneys and aorta, respectively. Therefore, agents that inhibit SPAK activity could be a new class of antihypertensive drugs with dual actions (i.e., NaCl diuresis and vasodilation). In this study, we developed a new ELISA-based screening system to find novel SPAK inhibitors and screened >20,000 small-molecule compounds. Furthermore, we used a drug repositioning strategy to identify existing drugs that inhibit SPAK activity. As a result, we discovered one small-molecule compound (Stock 1S-14279) and an antiparasitic agent (Closantel) that inhibited SPAK-regulated phosphorylation and activation of NCC and NKCC1 in vitro and in mice. Notably, these compounds had structural similarity and inhibited SPAK in an ATP-insensitive manner. We propose that the two compounds found in this study may have great potential as novel antihypertensive drugs.
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Affiliation(s)
- Eriko Kikuchi
- Department of Nephrology, Graduate School of Medical and Dental Sciences
| | - Takayasu Mori
- Department of Nephrology, Graduate School of Medical and Dental Sciences
| | - Moko Zeniya
- Department of Nephrology, Graduate School of Medical and Dental Sciences
| | - Kiyoshi Isobe
- Department of Nephrology, Graduate School of Medical and Dental Sciences
| | | | - Shinya Fujii
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan; and
| | - Hiroyuki Kagechika
- Chemical Biology Screening Center, and Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan; and
| | - Tomoaki Ishihara
- Department of Analytical Chemistry, Faculty of Pharmacy, Keio University, Tokyo, Japan
| | - Tohru Mizushima
- Department of Analytical Chemistry, Faculty of Pharmacy, Keio University, Tokyo, Japan
| | - Sei Sasaki
- Department of Nephrology, Graduate School of Medical and Dental Sciences
| | - Eisei Sohara
- Department of Nephrology, Graduate School of Medical and Dental Sciences
| | - Tatemitsu Rai
- Department of Nephrology, Graduate School of Medical and Dental Sciences
| | - Shinichi Uchida
- Department of Nephrology, Graduate School of Medical and Dental Sciences,
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15
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Ishikawa T, Mizuno Y, Ishida J, Konakahara Y, Kobayashi A, Hagiwara M, Gomi Y, Yokosuka J, Aizawa M, Saeki C, Kitahara T, Satoh K, Amano K, Hokari A, Hama H, Zeniya M, Tajiri H. PP060-MON: The Nutritional Relationship Between Nonalcoholic Fatty Liver Disease and Type 2 Diabetes. Clin Nutr 2014. [DOI: 10.1016/s0261-5614(14)50395-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Susa K, Sohara E, Rai T, Zeniya M, Mori Y, Mori T, Chiga M, Nomura N, Nishida H, Takahashi D, Isobe K, Inoue Y, Takeishi K, Takeda N, Sasaki S, Uchida S. Impaired degradation of WNK1 and WNK4 kinases causes PHAII in mutant KLHL3 knock-in mice. Hum Mol Genet 2014; 23:5052-60. [PMID: 24821705 DOI: 10.1093/hmg/ddu217] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Pseudohypoaldosteronism type II (PHAII) is a hereditary disease characterized by salt-sensitive hypertension, hyperkalemia and metabolic acidosis, and genes encoding with-no-lysine kinase 1 (WNK1) and WNK4 kinases are known to be responsible. Recently, Kelch-like 3 (KLHL3) and Cullin3, components of KLHL3-Cullin3 E3 ligase, were newly identified as responsible for PHAII. We have reported that WNK4 is the substrate of KLHL3-Cullin3 E3 ligase-mediated ubiquitination. However, WNK1 and Na-Cl cotransporter (NCC) were also reported to be a substrate of KLHL3-Cullin3 E3 ligase by other groups. Therefore, it remains unclear which molecule is the target(s) of KLHL3. To investigate the pathogenesis of PHAII caused by KLHL3 mutation, we generated and analyzed KLHL3(R528H/+) knock-in mice. KLHL3(R528H/+) knock-in mice exhibited salt-sensitive hypertension, hyperkalemia and metabolic acidosis. Moreover, the phosphorylation of NCC was increased in the KLHL3(R528H/+) mouse kidney, indicating that the KLHL3(R528H/+) knock-in mouse is an ideal mouse model of PHAII. Interestingly, the protein expression of both WNK1 and WNK4 was significantly increased in the KLHL3(R528H/+) mouse kidney, confirming that increases in these WNK kinases activated the WNK-OSR1/SPAK-NCC phosphorylation cascade in KLHL3(R528H/+) knock-in mice. To examine whether mutant KLHL3 R528H can interact with WNK kinases, we measured the binding of TAMRA-labeled WNK1 and WNK4 peptides to full-length KLHL3 using fluorescence correlation spectroscopy, and found that neither WNK1 nor WNK4 bound to mutant KLHL3 R528H. Thus, we found that increased protein expression levels of WNK1 and WNK4 kinases cause PHAII by KLHL3 R528H mutation due to impaired KLHL3-Cullin3-mediated ubiquitination.
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Affiliation(s)
- Koichiro Susa
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima Bunkyo, Tokyo 113-8519, Japan
| | - Eisei Sohara
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima Bunkyo, Tokyo 113-8519, Japan
| | - Tatemitsu Rai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima Bunkyo, Tokyo 113-8519, Japan
| | - Moko Zeniya
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima Bunkyo, Tokyo 113-8519, Japan
| | - Yutaro Mori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima Bunkyo, Tokyo 113-8519, Japan
| | - Takayasu Mori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima Bunkyo, Tokyo 113-8519, Japan
| | - Motoko Chiga
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima Bunkyo, Tokyo 113-8519, Japan
| | - Naohiro Nomura
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima Bunkyo, Tokyo 113-8519, Japan
| | - Hidenori Nishida
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima Bunkyo, Tokyo 113-8519, Japan
| | - Daiei Takahashi
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima Bunkyo, Tokyo 113-8519, Japan
| | - Kiyoshi Isobe
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima Bunkyo, Tokyo 113-8519, Japan
| | - Yuichi Inoue
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima Bunkyo, Tokyo 113-8519, Japan
| | - Kenta Takeishi
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima Bunkyo, Tokyo 113-8519, Japan
| | - Naoki Takeda
- Division of Transgenic Technology, Institute of Resource Development and Analysis, Kumamoto University, 2-2-1 Honjo Chuo Kumamoto, Kumamoto 860-0811, Japan
| | - Sei Sasaki
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima Bunkyo, Tokyo 113-8519, Japan
| | - Shinichi Uchida
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima Bunkyo, Tokyo 113-8519, Japan
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Zeniya M, Sohara E, Kita S, Iwamoto T, Susa K, Mori T, Oi K, Chiga M, Takahashi D, Yang SS, Lin SH, Rai T, Sasaki S, Uchida S. Dietary Salt Intake Regulates WNK3–SPAK–NKCC1 Phosphorylation Cascade in Mouse Aorta Through Angiotensin II. Hypertension 2013; 62:872-8. [DOI: 10.1161/hypertensionaha.113.01543] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Na–K–Cl cotransporter isoform 1 (NKCC1) is involved in the regulation of vascular smooth muscle cell contraction. Recently, the with-no-lysine kinase (WNK)–STE20/SPS1-related proline/alanine-rich kinase (SPAK)–NKCC1 phosphorylation cascade in vascular smooth muscle cells was found to be important in the regulation of vascular tone. In this study, we investigated whether the WNK–SPAK–NKCC1 cascade in mouse aortic tissue is regulated by dietary salt intake and the mechanisms responsible. Phosphorylation of SPAK and NKCC1 was significantly reduced in the aorta in high-salt–fed mice and was increased in the aorta in low-salt–fed mice, indicating that the WNK–SPAK–NKCC1 phosphorylation cascade in the aorta was indeed regulated by dietary salt intake. Acute and chronic angiotensin II infusion increased phosphorylation of SPAK and NKCC1 in the mouse aorta. In addition, valsartan, an antagonist of angiotensin II type 1 receptor, inhibited low-salt diet–induced phosphorylation of SPAK and NKCC1, demonstrating that angiotensin II activates the WNK–SPAK–NKCC1 phosphorylation cascade through the angiotensin II type 1 receptor. However, a low-salt diet and angiotensin II together did not increase phosphorylation of SPAK and NKCC1 in the aorta in WNK3 knockout mice, indicating that activation of the WNK–SPAK–NKCC1 phosphorylation cascade induced by a low-salt diet and angiotensin II is dependent on WNK3. Indeed, angiotensin II–induced increases in blood pressure were diminished in WNK3 knockout mice. In addition, decreased response to angiotensin II in the mesenteric arteries was observed in WNK3 knockout mice. Our data also clarified a novel mechanism for regulation of vascular tonus by angiotensin II. Inhibition of this cascade could, therefore, be a novel therapeutic target in hypertension.
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Affiliation(s)
- Moko Zeniya
- From the Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan (M.Z., E.S., K.S., T.M., K.O., M.C., D.T., T.R., S.S., S.U.); Department of Pharmacology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan (S.K., T.I.); and Division of Nephrology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan (S.-S.Y., S.-H.L.)
| | - Eisei Sohara
- From the Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan (M.Z., E.S., K.S., T.M., K.O., M.C., D.T., T.R., S.S., S.U.); Department of Pharmacology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan (S.K., T.I.); and Division of Nephrology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan (S.-S.Y., S.-H.L.)
| | - Satomi Kita
- From the Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan (M.Z., E.S., K.S., T.M., K.O., M.C., D.T., T.R., S.S., S.U.); Department of Pharmacology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan (S.K., T.I.); and Division of Nephrology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan (S.-S.Y., S.-H.L.)
| | - Takahiro Iwamoto
- From the Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan (M.Z., E.S., K.S., T.M., K.O., M.C., D.T., T.R., S.S., S.U.); Department of Pharmacology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan (S.K., T.I.); and Division of Nephrology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan (S.-S.Y., S.-H.L.)
| | - Koichiro Susa
- From the Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan (M.Z., E.S., K.S., T.M., K.O., M.C., D.T., T.R., S.S., S.U.); Department of Pharmacology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan (S.K., T.I.); and Division of Nephrology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan (S.-S.Y., S.-H.L.)
| | - Takayasu Mori
- From the Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan (M.Z., E.S., K.S., T.M., K.O., M.C., D.T., T.R., S.S., S.U.); Department of Pharmacology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan (S.K., T.I.); and Division of Nephrology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan (S.-S.Y., S.-H.L.)
| | - Katsuyuki Oi
- From the Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan (M.Z., E.S., K.S., T.M., K.O., M.C., D.T., T.R., S.S., S.U.); Department of Pharmacology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan (S.K., T.I.); and Division of Nephrology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan (S.-S.Y., S.-H.L.)
| | - Motoko Chiga
- From the Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan (M.Z., E.S., K.S., T.M., K.O., M.C., D.T., T.R., S.S., S.U.); Department of Pharmacology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan (S.K., T.I.); and Division of Nephrology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan (S.-S.Y., S.-H.L.)
| | - Daiei Takahashi
- From the Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan (M.Z., E.S., K.S., T.M., K.O., M.C., D.T., T.R., S.S., S.U.); Department of Pharmacology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan (S.K., T.I.); and Division of Nephrology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan (S.-S.Y., S.-H.L.)
| | - Sung-Sen Yang
- From the Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan (M.Z., E.S., K.S., T.M., K.O., M.C., D.T., T.R., S.S., S.U.); Department of Pharmacology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan (S.K., T.I.); and Division of Nephrology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan (S.-S.Y., S.-H.L.)
| | - Shih-Hua Lin
- From the Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan (M.Z., E.S., K.S., T.M., K.O., M.C., D.T., T.R., S.S., S.U.); Department of Pharmacology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan (S.K., T.I.); and Division of Nephrology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan (S.-S.Y., S.-H.L.)
| | - Tatemitsu Rai
- From the Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan (M.Z., E.S., K.S., T.M., K.O., M.C., D.T., T.R., S.S., S.U.); Department of Pharmacology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan (S.K., T.I.); and Division of Nephrology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan (S.-S.Y., S.-H.L.)
| | - Sei Sasaki
- From the Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan (M.Z., E.S., K.S., T.M., K.O., M.C., D.T., T.R., S.S., S.U.); Department of Pharmacology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan (S.K., T.I.); and Division of Nephrology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan (S.-S.Y., S.-H.L.)
| | - Shinichi Uchida
- From the Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan (M.Z., E.S., K.S., T.M., K.O., M.C., D.T., T.R., S.S., S.U.); Department of Pharmacology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan (S.K., T.I.); and Division of Nephrology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan (S.-S.Y., S.-H.L.)
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18
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Takahashi D, Mori T, Wakabayashi M, Mori Y, Susa K, Zeniya M, Sohara E, Rai T, Sasaki S, Uchida S. KLHL2 interacts with and ubiquitinates WNK kinases. Biochem Biophys Res Commun 2013; 437:457-62. [PMID: 23838290 DOI: 10.1016/j.bbrc.2013.06.104] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Accepted: 06/27/2013] [Indexed: 01/29/2023]
Abstract
Mutations in the WNK1 and WNK4 genes result in an inherited hypertensive disease, pseudohypoaldosteronism type II (PHAII). Recently, the KLHL3 and Cullin3 genes were also identified as responsible genes for PHAII. Although we have reported that WNK4 is a substrate for the KLHL3-Cullin3 E3 ligase complex, it is not clear whether all of the WNK isoforms are regulated only by KLHL3. To explore the interaction of WNKs and other Kelch-like proteins, we focused on KLHL2 (Mayven), a human homolog of Drosophila Kelch that shares the highest similarity with KLHL3. We found that KLHL2, as well as KLHL3, was co-immunoprecipitated with all four WNK isoforms. The direct interaction of KLHL2 with WNKs was confirmed on fluorescence correlation spectroscopy. Co-expression of KLHL2 and Cullin3 decreased the abundance of WNK1, WNK3 and WNK4 within HEK293T cells, and a significant increase of WNK4 ubiquitination by KLHL2 and Cullin3 was observed both in HEK293T cells and in an in vitro ubiquitination assay. These results suggest that KLHL2-Cullin3 also functions as an E3-ligase for WNK isoforms within the body.
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Affiliation(s)
- Daiei Takahashi
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan
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19
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Hayakawa A, Nakajima T, Satoh K, Yamazaki J, Zeniya M, Nasu K, Seyama Y, Okura Y, Tanizawa T, Inoshita S. [Case report: a case of polyarteritis nodosa with small intestinal perforation and renal aneurysm rupture]. ACTA ACUST UNITED AC 2013; 102:714-6. [PMID: 23777164 DOI: 10.2169/naika.102.714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Akiko Hayakawa
- Department of Nephrology, Tokyo Metropolitan Bokutoh Hospital, Japan
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20
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Nakano M, Saeki C, Takahashi H, Homma S, Tajiri H, Zeniya M. Activated natural killer T cells producing interferon-gamma elicit promoting activity to murine dendritic cell-based autoimmune hepatic inflammation. Clin Exp Immunol 2013; 170:274-82. [PMID: 23121668 DOI: 10.1111/j.1365-2249.2012.04664.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
As natural killer (NK) T cells play an important role in the development of autoimmune diseases, they should have significant roles for the pathogenesis of autoimmune liver disease. Implication of the NK T cells in the generation of autoimmune-related hepatic inflammation was investigated using a novel mouse model. Immunization of mice with dendritic cells (DCs) loaded with hepatocyte-mimicking hepatocellular carcinoma cells (DC/Hepa1-6) induces cytotoxic T lymphocytes (CTL) capable of killing hepatocytes. Subsequent administration of interleukin (IL)-12, a potent interferon-gamma (IFN-γ) inducer, to the immunized mice generates autoimmune hepatic inflammation (AHI), as reported previously. Upon onset of the AHI response, the number of intrahepatic CD3(+) NK1 · 1(+) NK T cells increased markedly, along with a decrease in the number of splenic NK T cells, augmented expression of CXCR6 on intrahepatic NK T cells and CXCL16 in hepatic tissue, suggesting that NK T cells were recruited into the inflamed liver. The NK T cells were strongly positive for CD69 and produced IFN-γ, but not IL-4. AHI activity was attenuated markedly in CD1d(-/-) NK T cell-deficient mice, indicating that NK T cells play a pivotal role in the development of AHI. Mice treated with DC/Hepa1-6 and alpha-galactosylceramide, a potent NK T cell activator, also exhibited similar hepatic inflammation, in which activated NK T cells producing IFN-γ and CD8(+) T cells cytotoxic to hepatocytes were induced in liver-infiltrating mononuclear cells. Activated NK T cells producing IFN-γ potentiate DC-based AHI in the mouse model.
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Affiliation(s)
- M Nakano
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Jikei University School of Medicine, Tokyo, Japan
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21
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Sawada K, Masaki N, Hayashi S, Zeniya M, Ishikawa T, Takahashi H, Ohnishi K, Fukunaga K, Hara N, Yamamoto T, Hada T, Toda G. Immunomodulatory effects of selective leucocytapheresis as a new adjunct to interferon-alpha2b plus ribavirin combination therapy: a prospective study in patients with high plasma HCV viraemia. J Viral Hepat 2005; 12:274-82. [PMID: 15850468 DOI: 10.1111/j.1365-2893.2005.00577.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Efficacy of interferon-alpha2b (IFN) + ribavirin (IFN/RBV) combination in patients with high plasma hepatitis C virus (HCV) is very poor. Dysregulated CD4+ /CD8+ T cells is involved in both impaired cell-mediated immunity and resistance to IFN. Adsorptive granulocytes and monocytes apheresis (GMA) can remove infected leucocytes which are extrahepatic HCV reservoirs and also has been associated with intriguing immunomodulation and increases in CD4+ T cells. Our aim was to see if GMA enhances the efficacy of IFN/RBV. Twenty-four patients, 13 IFN resistant and 11 IFN naive were enrolled. Seventeen were genotype 1b and 7 were 2a or 2b. Mean plasma HCV-RNA was 612.9 (100-850) kIU/mL and alanine aminotransferase, 108 (41-373) U/L. GMA was performed with Adacolumn at one session/day for five consecutive days and IFN/RBV was started within 24 h after the last GMA session. Daily 6 million units of IFN, six times/week for 2 weeks and then three times/week for 22 weeks were given with RBV (600-800 mg/day/patient). Patients were followed for 6 months. GMA was associated with a significant increase in lymphocyte counts, complement activation fragment C3a and falls in tissue necrosis factor-alpha, and IL-8 produced by peripheral blood leucocytes. At week 24, 20 of 24 patients (83%) were HCV negative and by end of follow-up (week 49), the remission was sustained in 14 of 24 patients (58%) including 100% of patients with 2a or 2b. In conclusion, enhanced efficacy of IFN/RBV following GMA might be attributed to a more efficient immune function and a renewed IFN signaling towards HCV.
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Affiliation(s)
- K Sawada
- Department of Gastroentrology, Fujimoto Hospital Medicine, Osaka 583-0857, Japan.
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22
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Zeniya M. [Autoimmune liver disease and its variant]. Nihon Shokakibyo Gakkai Zasshi 2001; 98:1257-62. [PMID: 11729652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Affiliation(s)
- M Zeniya
- Jikei University School of Medicine, Division of Gastroenterology & Hepatology
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23
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Ishikawa T, Zeniya M, Fujise K, Toda G. [Laser induced thermotherapy for hepatocellular carcinoma]. Nihon Rinsho 2001; 59 Suppl 6:601-5. [PMID: 11762020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Affiliation(s)
- T Ishikawa
- Division of Gastroenterology and Hepatology, Jikei University School of Medicine
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24
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Zeniya M, Toda G. [Autoimmune cholangitis]. Ryoikibetsu Shokogun Shirizu 2001:222-5. [PMID: 11269063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- M Zeniya
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Jikei University School of Medicine
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Izumi N, Kumada H, Hashimoto N, Harada H, Imawari M, Zeniya M, Toda G. Rapid decrease of plasma HCV RNA in early phase of twice daily administration of 3 MU doses interferon-beta in patients with genotype 1b hepatitis C infection: a multicenter randomized study. Dig Dis Sci 2001; 46:516-23. [PMID: 11318525 DOI: 10.1023/a:1005686829416] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
Virological response to interferon (IFN) is poor in patients with plasma levels of HCV RNA higher than 1 Meq/ml and genotype 1b hepatitis C viral infection. In 60 patients, a randomized control study was conducted to compare 3 MU of IFN-beta twice daily for four weeks (group A) and 6 MU once a day for four weeks (group B) followed by a four-week administration of 6 MU once a day. The plasma levels of HCV RNA, determined by an amplicore-monitor method, for patients in group A were significantly lower than those for group B at the fourth and eighth day of IFN administration, and complete virological responses were noted in two patients from group A but none in group B. It is concluded that twice daily administration of 3 MU IFN-beta is more effective than once a day 6 MU in the early phase of IFN therapy.
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Affiliation(s)
- N Izumi
- Division of Gastroenterology and Hepatology, Musashino Red-cross Hospital, Tokyo, Japan
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26
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Sasaki M, Yamauchi K, Tokushige K, Isono E, Komatsu T, Zeniya M, Toda G, Hayashi N. Clinical significance of autoantibody to hepatocyte membrane antigen in type 1 autoimmune hepatitis. Am J Gastroenterol 2001; 96:846-51. [PMID: 11280563 DOI: 10.1111/j.1572-0241.2001.03630.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE By using HepG2 as flow cytometry target, we have reported that autoantibody to hepatocyte membrane antigen (anti-HMA) was frequently found in autoimmune hepatitis (AIH) patients. In this study, we have examined this autoantibody in relation to clinical features in these patients. METHODS HepG2 cells were incubated with diluted serum and subsequently with FITC-conjugated antihuman immunoglobulin. The results were expressed as relative fluorescence intensity. The prevalence of anti-HMA was estimated by setting the upper limit of mean +/- 3 SD obtained from healthy subjects. RESULTS We found that the mean relative fluorescence intensity was 1.67+/-0.5 in AIH with low serum ALT level (group 1 AIH), 4.20+/-1.9 in AIH with high serum ALT level (group 2 AIH), and 1.92+/-0.9 in age-matched chronic hepatitis C virus-positive patients. Their positive rate was 37.5% (three of eight) in group 1 AIH, 95.0% (19 of 20) in group 2 AIH, and 33.3% (four of 12) in chronic hepatitis C patients. In 12 group 2 AIH patients, their mean relative fluorescence intensity was significantly decreased during immunosuppressive therapy. The association between serum ALT level and anti-HMA was confirmed by the facts that a significant direct quantitative relationship existed between these two levels and by serial studies of anti-HMA in four AIH patients. Anti-HMA was also detected in five non-B, non-C hepatitis patients having clinical features resembling those of AIH. CONCLUSIONS The present results have shown that the anti-HMA was tightly associated with the degree of hepatocyte inflammation and that the measurement of anti-HMA may have some advantage in clinical evaluation of some of non-B, non-C hepatitis patients.
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Affiliation(s)
- M Sasaki
- Division of Medicine, Institute of Gastroenterology, Tokyo Women's Medical University, Japan
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28
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Aizawa Y, Shibamoto Y, Takagi I, Zeniya M, Toda G. Analysis of factors affecting the appearance of hepatocellular carcinoma in patients with chronic hepatitis C. A long term follow-up study after histologic diagnosis. Cancer 2000; 89:53-9. [PMID: 10897000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) occurs more frequently in patients with hepatitis C virus (HCV)-related chronic liver disease than those with hepatitis B virus-related disease. It is important to assess the factors affecting the development of HCC. METHODS A long term follow-up study involving patients with chronic HCV was performed retrospectively. A total of 153 patients diagnosed between June 1981 and November 1990 with chronic HCV with or without cirrhosis by liver biopsy were enrolled in a long term follow-up study (average, 99.4 months) and the cumulative incidence rate of HCC and factors affecting the appearance of HCC were examined. RESULTS The 5-year cumulative incidence rate was 9%, the 10-year cumulative incidence rate was 23%, and the 15-year cumulative incidence rate was 42%. The annual rate of incidence increased as the follow-up period progressed. The authors selected ten variables and investigated their effect on the incidence rate of HCC, including age, gender, habitual heavy drinking, positivity of antibody against hepatitis B virus surface antigen, treatment with interferon (IFN) during the follow-up period, maximum and minimum serum alanine aminotransferase levels during the follow-up period, histologic staging, grading, and irregular regeneration of hepatocytes. Of the 10 variables, age (> 50 years), habitual heavy drinking, and histologic staging were determined to be independent risk factors according to multivariate Cox proportional hazards regression analysis. IFN therapy by itself was not found to be an independent factor affecting the appearance of HCC. CONCLUSIONS In patients with chronic HCV, the annual incidence rate of HCC appeared to increase as the follow-up period progressed. According to the results of the current study, the factors that independently affected the development of HCC were age, habitual heavy drinking, and histologic staging.
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Affiliation(s)
- Y Aizawa
- Department of Internal Medicine, Jikei University School of Medicine, Tokyo, Japan
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Abstract
To establish a case selection algorithm for the treatment of hepatitis C, predictive factors were studied and reported articles were reviewed and analysed. Because of the relatively poor efficacy of interferon (IFN) monotherapy, which is ineffective in 60-70% of patients, case selection at present is determined by the likelihood of attaining a sustained response (SR; defined by normalizing serum ALT and eliminating serum HCV RNA after treatment) to therapy. According to the present study, viral load and genotype, and IL-10 and IL-1ra serum levels, are the most predictive of achieving SR after IFN monotherapy given in a comparatively high dose regimen for 6 months. In addition, reported studies with logistic analyses were carefully reviewed and analysed for the most effective predictive factors of case selection. The results again indicated that viral load and HCV-genotype (serotype). were closely related to SR. Age, gender, and histological changes at treatment were also considered for case selection. These results, however, relate solely to IFN-monotherapy. Future development of more effective strategies for treating hepatitis C could alter the exclusion criteria for IFN treatment and will negate the need for the case selection algorithm discussed here.
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Affiliation(s)
- M Zeniya
- Department of Internal Medicine 1, Jikei University School of Medicine, Minato, Tokyo, Japan.
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Affiliation(s)
- M Zeniya
- The Department of Internal Medicine 1, The Jikei University School of Medicine, Tokyo
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Alvarez F, Berg PA, Bianchi FB, Bianchi L, Burroughs AK, Cancado EL, Chapman RW, Cooksley WG, Czaja AJ, Desmet VJ, Donaldson PT, Eddleston AL, Fainboim L, Heathcote J, Homberg JC, Hoofnagle JH, Kakumu S, Krawitt EL, Mackay IR, MacSween RN, Maddrey WC, Manns MP, McFarlane IG, Meyer zum Büschenfelde KH, Zeniya M. International Autoimmune Hepatitis Group Report: review of criteria for diagnosis of autoimmune hepatitis. J Hepatol 1999; 31:929-38. [PMID: 10580593 DOI: 10.1016/s0168-8278(99)80297-9] [Citation(s) in RCA: 1888] [Impact Index Per Article: 75.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- F Alvarez
- Institute of Liver Studies, King's College Hospital, London, UK
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33
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Zeniya M. [Thyroid disease in autoimmune liver diseases]. Nihon Rinsho 1999; 57:1882-7. [PMID: 10483270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
It has been reported that autoimmune liver diseases, autoimmune hepatitis, primary biliary cirrhosis and primary sclerosing cholangitis, complicate thyroid disorder. According to the Nationwide survey in Japan, hypothyroidism most of which are due to chronic thyroiditis was seen in both autoimmune hepatitis and primary biliary cirrhosis, at 12% and 5.8%, respectively. It is sometimes happen that the manifestation of thyroid disorder proceeds the symptoms of liver disease. Because middle-aged women preferably tend to suffer from both autoimmune liver disease and autoimmune thyroid disease, it is important that we should be concerned both diseases when we are making diagnosis in these patients.
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Affiliation(s)
- M Zeniya
- Department of Internal Medicine I, Jikei University School of Medicine
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34
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Omata M, Zeniya M, Ichida T, Suzuki K, Sasahira N. [Refractory liver diseases: progress in treatment. Discussion]. Nihon Naika Gakkai Zasshi 1999; 88:670-87. [PMID: 10341655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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35
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Toda G, Watanabe F, Zeniya M. [Autoimmune hepatitis: an epidemiological study]. Nihon Naika Gakkai Zasshi 1999; 88:572-7. [PMID: 10341639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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36
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Zeniya M, Toda G. [Advances in the treatment of severe refractory diseases. 2) Viral hepatitis]. Nihon Naika Gakkai Zasshi 1998; 87:2245-9. [PMID: 9921209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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37
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Hayashi A, Suzuki K, Narita T, Yui R, Inada S, Kimura T, Aizawa Y, Zeniya M, Toda G, Fujiwara M. Induction of autoimmune-like hepatic and ductal lesions by administration of lipopolysaccharide in mice undergoing graft-versus-host reaction across MHC class I difference. Immunol Lett 1997; 59:159-70. [PMID: 9419023 DOI: 10.1016/s0165-2478(97)00120-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In this paper, we examined the induction of autoimmune-like histologic changes in the liver and other organs of mice undergoing graft-versus-host reaction (GVHR) with MHC class I disparity by the administration of bacterial lipopolysaccharide (LPS), on the assumption that stimulation with LPS could be an exacerbating factor. Spleen cells of C57BL/6 (B6) mice were injected twice into (B6 x bml) F1 recipient mice at an interval of 7 days to induce MHC class I GVHR and then challenged with 1 microg of LPS intravenously on the next day of the cell transfer. The hepatic lesions of the group of MHC class I GVHR mice challenged with LPS showed marked cellular infiltration at the portal area and focal necrosis was observed in the hepatic lobule. The major infiltrating cells were CD8+, and others including CD4+ cells being of minor populations. In addition, ductal lesions in extrahepatic organs, including the pancreas and salivary glands also showed marked cellular infiltration. Thus, we have demonstrated that LPS induced ductal lesions in mice with MHC class I disparity. CD8+ cells were detected at the destructive hepatic lesions, which might be effector cells. These findings indicate that LPS might be one of the potential factors which augment autoimmune-like lesions.
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Affiliation(s)
- A Hayashi
- Animal Center for Biomedical Research, Faculty of Medicine, The University of Tokyo, Japan
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38
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Karasawa T, Shirasawa T, Okawa Y, Kuramoto A, Shimada N, Aizawa Y, Zeniya M, Toda G. Association between frequency of amino acid changes in core region of hepatitis B virus (HBV) and the presence of precore mutation in Japanese HBV carriers. J Gastroenterol 1997; 32:611-22. [PMID: 9349986 DOI: 10.1007/bf02934110] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
To elucidate the relationship between the frequency of core mutations and precore mutation of hepatitis B virus (HBV) in Japanese HBV carriers, we investigated the nucleotide sequence of the precore/core region of HBV in 26 Japanese HBV carriers [15 who were HBe antigen-negative (HBeAg-) and 11 who were HBeAg-positive (HBeAg+)]. The number of amino acid changes (5.9 +/- 3.8) in the core region of HBV in HBeAg-carriers was significantly greater than that in the HBeAg+ carriers (1.5 +/- 1.0; P < 0.005). The precore stop codon mutation was found in 93.3% of HBeAg-negative HBV carriers, while no precore mutation was found in the HBeAg-positive HBV carriers, suggesting that the frequency of core mutations may be associated with the presence of the precore stop codon mutation. However, there was no significant difference in the frequency of amino acid changes among HBeAg-HBV carriers. The mean number of core amino acid changes of liver cirrhosis patients, chronic active hepatitis patients, chronic persistent hepatitis patients, and asymptomatic carriers were 2.7 +/- 1.5, 6.0 +/- 2.2, 4.7 +/- 1.2, and 8.4 +/- 5.3, respectively. We detected hot spots for core mutations, which showed characteristic localizations and specific substitutions: Gly-87, Leu-97, and Thr-130 were detected exclusively in patients with chronic liver disease with or without HBeAg. To address further the relationship between frequency of core mutations and the presence of the precore stop codon mutation, we investigated the precore/core nucleotide sequence serially along with seroconversion in three patients with chronic hepatitis B in whom the hepatitis either became inactive or remained active after the seroconversion. Emergence of the precore stop codon mutation and a significant increase in core amino-acid changes after seroconversion were noted in all three patients. Our results suggest a close association between the frequency of core amino acid changes and the presence of the precore stop codon mutation; some characteristic core mutations may be associated with the clinical course of chronic hepatitis B in Japanese patients.
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Affiliation(s)
- T Karasawa
- First Department of Internal Medicine, Jikei University School of Medicine, Tokyo, Japan
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39
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Aizawa K, Takahashi H, Yamamoto H, Kato N, Kawaguchi Y, Sakai O, Tsuno S, Zeniya M, Toda G. [A case of post-kidney transplantation liver failure with hepatitis B carrier state]. Nihon Naika Gakkai Zasshi 1997; 86:1045-7. [PMID: 9340348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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40
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Toda G, Zeniya M, Watanabe F, Imawari M, Kiyosawa K, Nishioka M, Tsuji T, Omata M. Present status of autoimmune hepatitis in Japan--correlating the characteristics with international criteria in an area with a high rate of HCV infection. Japanese National Study Group of Autoimmune Hepatitis. J Hepatol 1997; 26:1207-12. [PMID: 9210605 DOI: 10.1016/s0168-8278(97)80453-9] [Citation(s) in RCA: 132] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND/AIMS A nationwide survey of autoimmune hepatitis (AIH) was carried out in Japan. METHODS Four hundred and ninety-six patients were enrolled by questionnaires sent to 101 hospitals with hepatology specialists. RESULTS The clinical features of Japanese AIH were as follows: most patients were middle-aged women; serum autoantibodies, especially antinuclear antibody, were frequently positive, serum IgG level was high, and HLA-DR4 was the major HLA allotype. Liver-kidney microsomal type 1 antibody was positive in nine of 79 patients tested. Eight of these antibody positive patients were also positive for antinuclear antibody and five for anti-smooth muscle antibody. Ninety-two percent of the patients showed piecemeal necrosis and 60% bridging necrosis; plasma cell infiltration in the portal areas was observed in 50% of the patients. Only 12.3% were diagnosed as having liver cirrhosis. A favorable effect of corticosteroid, normalization of serum transaminases, was observed in 89% of 317 patients, who were treated with an initial dose of over 30 mg/day. Sixty-two patients were positive for hepatitis C virus (HCV) markers. In these patients, however, only one patient was liver-kidney microsomal type 1 antibody positive. Corticosteroid was effective in 30 (81%) of 37 HCV-marker-positive patients treated with this agent. Thus the efficacy of corticosteroid did not differ from that in AIH patients without HCV infection (90%). Similarly, interferon treatment was used in 20 patients, all of whom were positive for HCV-RNA, and resulted in 50% efficacy as determined by normalization of the serum transaminase level 6 months after treatment. The International Diagnostic Scoring System for the diagnosis of AIH worked well in these patients, except for HCV-infected individuals, that is, approximately 10% of the total of AIH patients.
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Affiliation(s)
- G Toda
- Department of Internal Medicine I, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
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41
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Zeniya M, Toda G. [Kidney in chronic active hepatitis]. Ryoikibetsu Shokogun Shirizu 1997:471-4. [PMID: 9277969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- M Zeniya
- Department of Internal Medicine (I), Jikei University School of Medicine
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Okuaki Y, Miyazaki H, Zeniya M, Ishikawa T, Ohkawa Y, Tsuno S, Sakaguchi M, Hara M, Takahashi H, Toda G. Splenectomy-reduced hepatic injury induced by ischemia/reperfusion in the rat. Liver 1996; 16:188-94. [PMID: 8873006 DOI: 10.1111/j.1600-0676.1996.tb00726.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
In the present study, we investigated the role of the spleen in experimental hepatic ischemia/reperfusion in the rat. After a 90-min period of ischemia in the left and middle hepatic lobes, the ischemia was released and the liver was reperfused for up to 24 h. Plasma alanine aminotransferase reached a peak 3 h after the onset of reperfusion, and gradually decreased thereafter. A histological examination revealed evidence of hepatocellular necrosis and degeneration, especially 24 h after the onset of reperfusion. In addition, there was a noticeable accumulation of polymorphonuclear cells in the liver following ischemia/reperfusion. A splenectomy performed just prior to ischemia/reperfusion reduced both biochemical and histological hepatocellular injury. The number of polymorphonuclear cells in the liver following ischemia/reperfusion was significantly reduced in rats subjected to splenectomy, suggesting that the increase in polymorphonuclear cells may contribute to liver injury. The number of mononuclear cells also increased in the marginal zones of the spleen following ischemia/reperfusion, and appeared to be derived from the splenic monocyte/macrophage population, based on immunohistochemical studies. The spleen plays an important role in the pathogenesis of hepatic ischemia/reperfusion injury and the splenic monocyte/ macrophage population contributes to liver damage.
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Affiliation(s)
- Y Okuaki
- First Department of Internal Medicine, Jikei University School of Medicine, Tokyo, Japan
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43
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Takahashi H, Kuramoto A, Hara M, Watanabe F, Aizawa Y, Zeniya M, Toda K. [Intra-hepatic infiltrating T cell clonality analysis in patients with autoimmune hepatitis and the clinical significance]. Nihon Rinsho Meneki Gakkai Kaishi 1995; 18:708-712. [PMID: 8963794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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44
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Abstract
The expression of thrombomodulin on sinusoidal endothelial cells was studied using the immuno-peroxidase method and both light and electron microscopy in patients with chronic viral hepatitis (type B: four cases; type C: 28 cases). Thrombomodulin was found on sinusoidal endothelial cells, especially on the surface in both type B and type C chronic hepatitis. There was no correlation between the level of thrombomodulin expression and clinical data including serum level of transaminase, and coagulating factors. The supernatant of liver tissue homogenate obtained from the patients showed a clear 80 kDa single band by western blotting. We concluded that the expression of thrombomodulin might be related to hepatic inflammatory responses in chronic viral hepatitis.
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Affiliation(s)
- M Zeniya
- Department of Internal Medicine I, Jikei University School of Medicine, Tokyo, Japan
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45
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Zeniya M. [Clinical manifestation and immunogenetic background of HCV-marker-positive autoimmune hepatitis]. Nihon Rinsho 1995; 53 Suppl:877-84. [PMID: 7563894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- M Zeniya
- Department of Internal Medicine(I), JIKEI University School of Medicine
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Tsuno S, Zeniya M. [An immunohistochemical analysis in portal lymphocytic aggregation of chronic hepatitis C]. Nihon Rinsho 1995; 53 Suppl:635-41. [PMID: 7563846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- S Tsuno
- Department of Internal Medicine I, Jikei University School of Medicine
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Karasawa T, Aizawa Y, Zeniya M, Kuramoto A, Shirasawa T, Toda G. Genetic heterogeneity in the precore region of hepatitis B virus in hepatitis B e antigen-negative chronic hepatitis B patients: spontaneous seroconversion and interferon-induced seroconversion. J Med Virol 1995; 45:373-80. [PMID: 7666040 DOI: 10.1002/jmv.1890450404] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
To elucidate the relationship between the clinical severity of chronic liver disease and the precore mutations in hepatitis B e antigen (HBeAg)-negative hepatitis B virus (HBV) carriers, mutations were investigated in the precore region of HBV DNA in 20 chronic hepatitis B patients who seroconverted either spontaneously or after the administration of alpha-interferon (IFN), and 5 asymptomatic carriers. The precore mutation with a stop codon at nucleotide 1896 was found in all patients, irrespective of the histology and in all asymptomatic carriers. The second mutation at nucleotide 1899 was found in 40% of cases studied but always followed by the first mutation at nucleotide 1896. The mixed viral infection of precore mutant and wild-type HBV virus was found in 40% of seroconverted cases after IFN treatment and in sera of HBV carriers obtained within a year after the spontaneous seroconversion. These data suggest that the precore mutants prevail over wild-type HBV in all HBeAg-negative HBV carriers within several years after the seroconversion, but their prevalence could not confine the clinical severity of chronic liver disease.
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Affiliation(s)
- T Karasawa
- First Department of Internal Medicine, Jikei University School of Medicine, Tokyo, Japan
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48
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Zeniya M, Kuramoto A, Hara M, Takahashi H, Aizawa Y, Toda G. Pathophisiology of liver damage in autoimmune hepatitis. Pathophysiology 1994. [DOI: 10.1016/0928-4680(94)90362-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Abstract
Nitric oxide (NO) is a messenger molecule with diverse functions throughout the body. The inducible type of nitric oxide synthase (NOS) is considered to be a key molecule in the immune responses to bacteria, parasites, and tumors, and its gene expression is regulated by cytokines. We isolated 3 overlapping partial inducible NOS cDNA clones from a human glioblastoma cell line A-172 induced by IL-1, TNF-alpha, and IFN-gamma. The 3,963-bp human glioblastoma inducible NOS cDNA contained the longest open reading frame of 3,459 bp, which encoded a polypeptide of 1,153 amino acids with a calculated molecular mass of 131 kDa. This human inducible NOS possessed consensus recognition sites for the cofactors FMN, FAD, and NADPH and calmodulin recognition sites, and displayed 48.1% sequence identity with the endothelial type, 43.1% with the neuronal type, and 99.3% with the inducible type from hepatocytes, and 99.9% with the inducible type from chondrocytes and adenocarcinoma. An expression plasmid consisting of pSG5 expression vector and cDNA containing the entire putative coding sequence was constructed and transfected into COS-1 cells. COS-1 cells showed nitric oxide synthase activity together with a 130 kDa immunoreactive band on Western blot analysis.
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Affiliation(s)
- A Hokari
- Biochemistry Division, National Cancer Center Research Institute, Tokyo
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Zeniya M, Aizawa Y, Watanabe F, Kawabe T, Hara M, Sakaguchi M, Toda G. HCV-marker-positive autoimmune-type chronic active hepatitis: a possible relation between HCV infection and liver autoreaction. Liver 1994; 14:206-12. [PMID: 7526109 DOI: 10.1111/j.1600-0676.1994.tb00075.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
This study focused on 32 patients who were diagnosed as having autoimmune hepatitis based upon clinical and histological factors. Fifteen of these patients were positive for HCV-RNA and for one of the HCV-related markers tested, including anti-C100, ELISA II, and RIBA 2 (Group 2). The remaining 17 patients were negative for all HCV-related markers (Group 1). Clinical factors in the two groups, including the frequency of autoantibodies, serum levels of aminotransferase and gammaglobulin, HLA phenotypes, and the response to corticosteroid treatments, were compared. The titer of serum anti-nuclear antibodies and the level of serum aminotransferase at initial diagnosis were significantly higher in Group 1 than in Group 2. Furthermore, the genetic background of the two groups, as indicated by HLA phenotypes, differed. All cases in Group 1 were HLA-DR4-positive, whereas only 60% of those in Group 2 cases had HLA-DR4. Also, all cases in Group 1 but only 66.7% of the cases in Group 2 showed good clinical responses to corticosteroid treatment. Finally, no cases of HCV-related-marker-positive autoimmune hepatitis (Group 2) had antibodies for LKM, suggesting that these cases were clinically different from type II autoimmune hepatitis. These data indicated that immunosuppressive treatment might be the preferred initial treatment in patients who either satisfy the criteria for AIH or who are sero-positive for an HCV-marker.
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Affiliation(s)
- M Zeniya
- Department of Internal Medicine (I), Jikei University School of Medicine, Tokyo, Japan
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