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  1. Article ; Online: Adding Cases to the Study of Bucillamine-Associated Neural Epidermal Growth Factor-Like1-Positive Membranous Nephropathy.

    Takahashi-Kobayashi, Mayumi / Usui, Joichi / Kawanishi, Kunio / Saito, Chie / Ebihara, Itaru / Yamagata, Kunihiro

    Kidney international reports

    2023  Volume 8, Issue 8, Page(s) 1698–1699

    Language English
    Publishing date 2023-06-08
    Publishing country United States
    Document type Journal Article
    ISSN 2468-0249
    ISSN (online) 2468-0249
    DOI 10.1016/j.ekir.2023.05.032
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Levels of Soluble NKG2D Ligands and Cancer History in Patients Starting Hemodialysis.

    Nagai, Kei / Tawara, Takashi / Usui, Joichi / Ebihara, Itaru / Ishizu, Takashi / Kobayashi, Masaki / Maeda, Yoshitaka / Kobayashi, Hiroaki / Yamagata, Kunihiro

    Frontiers in nephrology

    2022  Volume 2, Page(s) 875207

    Abstract: Background: Immune dysfunction in hemodialysis patients is partially due to NK cell impairment. Ligands for NK activating receptors such as NKG2D expressed on cancer cells are involved in NK cell dysfunction and can lead to cancer development.: ... ...

    Abstract Background: Immune dysfunction in hemodialysis patients is partially due to NK cell impairment. Ligands for NK activating receptors such as NKG2D expressed on cancer cells are involved in NK cell dysfunction and can lead to cancer development.
    Methods: A cohort with 370 patients who started hemodialysis (HD) was investigated. Serum levels of soluble NKG2D ligands were measured. Cancer history was defined as any cancer diagnosis at induction and hospitalization and death due to cancer during 2-year follow-up.
    Results: Sixty-two patients with and 308 patients without a cancer history showed mostly comparable biochemical parameters and uremic status at HD induction. Soluble MICB, ULBP-1, and ULBP-2 were detected in sera from most patients starting HD rather than MICA, the most representative NKG2D ligand. Measured NKG2D ligands, except for ULBP-1, were strongly correlated with each other. Correlations between NKG2D ligands and renal function were significant but modest in patients starting HD. Cancer history did not have any impact on levels of soluble NKG2D ligands.
    Discussion: Even though this investigation lacked a control cohort and serial measurement of parameters, expression patterns of NKG2D ligands were comprehensively described, and the significance of cancer in patients starting HD was elucidated for the first time. Elevated levels of soluble NKG2D ligands occurred potentially due to complex mechanisms of oxidative stress, with insufficient metabolism and excretion in a uremic milieu, but they might mask the significance of elevations in serum levels of soluble NKG2DLs in patients with a cancer history.
    Language English
    Publishing date 2022-03-22
    Publishing country Switzerland
    Document type Journal Article
    ISSN 2813-0626
    ISSN (online) 2813-0626
    DOI 10.3389/fneph.2022.875207
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: NT-pro BNP level at dialysis initiation is a useful biomarker for predicting hospitalization for ischemic heart disease.

    Shimohata, Homare / Usui, Joichi / Tawara-Iida, Takashi / Ebihara, Itaru / Ishizu, Takashi / Maeda, Yoshitaka / Kobayashi, Hiroaki / Numajiri, Daichi / Kaneshige, Ayaka / Sega, Masatoshi / Yamashita, Marina / Ohgi, Kentaro / Maruyama, Hiroshi / Takayasu, Mamiko / Hirayama, Kouichi / Kobayashi, Masaki / Yamagata, Kunihiro

    Clinical and experimental nephrology

    2024  Volume 28, Issue 5, Page(s) 457–464

    Abstract: Background: Patients with end-stage kidney disease (ESKD) are at high risk of cardiovascular disease including stroke, heart failure, and ischemic heart disease (IHD). To prevent the occurrence and progression of CVD, a reliable prognostic cardiac ... ...

    Abstract Background: Patients with end-stage kidney disease (ESKD) are at high risk of cardiovascular disease including stroke, heart failure, and ischemic heart disease (IHD). To prevent the occurrence and progression of CVD, a reliable prognostic cardiac biomarker is essential. We investigated the prognostic value of NT-proBNP for each incident type of CVD.
    Methods: Male patients from the Ibaraki Dialysis Initiation Cohort (iDIC) study with preserved serum samples from dialysis initiation day (n = 212) were analyzed. Patients were classified into four groups according to quartiles of baseline NT-pro BNP levels. The relationship between NT-proBNP levels at the initiation of dialysis and the subsequent incidence of hospitalization events due to IHD, heart failure, and stroke was analyzed.
    Results: The incidence rate for hospitalization due to IHD was significantly higher in the highest NT-proBNP category (Log rank p = 0.008); those of stroke and heart failure showed no significant differences among quartiles. Cox proportional hazards regression analysis revealed that serum NT-proBNT was the only prognostic factor for hospitalization for IHD after adjustment by major known IHD risk factors. (HR, 1.008; 95% confidence interval, 1.002-1.014; p = 0.01) The ROC curve analysis for the incidence of hospitalization due to IHD showed that NT-proBNP had an area under the curve (AUC) of 0.759 (95% CI 0.622-0.897; p = 0.004) at a cut-off value of 956.6 pg/mL.
    Conclusion: NT-proBNP measurement at the initiation of dialysis therapy is useful to predict later hospitalization for IHD.
    Trial registration: UMIN000010806.
    MeSH term(s) Humans ; Male ; Natriuretic Peptide, Brain/blood ; Biomarkers/blood ; Peptide Fragments/blood ; Myocardial Ischemia/blood ; Myocardial Ischemia/epidemiology ; Myocardial Ischemia/diagnosis ; Renal Dialysis ; Middle Aged ; Aged ; Hospitalization ; Kidney Failure, Chronic/therapy ; Kidney Failure, Chronic/blood ; Kidney Failure, Chronic/complications ; Heart Failure/blood ; Heart Failure/therapy ; Heart Failure/epidemiology ; Prognosis ; Incidence ; Stroke/blood ; Stroke/epidemiology ; Predictive Value of Tests ; ROC Curve ; Proportional Hazards Models ; Japan/epidemiology
    Chemical Substances Natriuretic Peptide, Brain (114471-18-0) ; pro-brain natriuretic peptide (1-76) ; Biomarkers ; Peptide Fragments
    Language English
    Publishing date 2024-01-19
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 1338768-6
    ISSN 1437-7799 ; 1342-1751
    ISSN (online) 1437-7799
    ISSN 1342-1751
    DOI 10.1007/s10157-023-02442-x
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  4. Article ; Online: Study protocol and baseline characteristics of newly induced dialysis patients: a prospective multi-center cohort study with a biological sample bank, the Ibaraki Dialysis Initiation Cohort (iDIC) study.

    Tawara-Iida, Takashi / Usui, Joichi / Ebihara, Itaru / Ishizu, Takashi / Kobayashi, Masaki / Maeda, Yoshitaka / Kobayashi, Hiroaki / Kobayashi, Tokuro / Ueda, Atsushi / Tsuchida, Makoto / Sakai, Shinichiro / Yamagata, Kunihiro

    BMC nephrology

    2022  Volume 23, Issue 1, Page(s) 104

    Abstract: Background: Patients with end-stage kidney disease (ESKD) face higher risks of life-threatening events including cardiovascular disease. Various risk factors are identified as agents influencing the life prognosis of ESKD patients. Herein, we evaluated ... ...

    Abstract Background: Patients with end-stage kidney disease (ESKD) face higher risks of life-threatening events including cardiovascular disease. Various risk factors are identified as agents influencing the life prognosis of ESKD patients. Herein, we evaluated the risk factors related to the outcomes of Japanese patients with dialysis induction. We present the study protocol, the patients' baseline characteristics, and their outcomes.
    Methods: The Ibaraki Dialysis Initiation Cohort (iDIC) Study is a prospective multi-center cohort study in collaboration with 60 tertiary-care facilities in Ibaraki Prefecture, Japan. We collected baseline data from clinical records and analyzed blood and urine samples of these facilities' patients with diabetic nephropathy, hypertensive nephrosclerosis, and chronic glomerulonephritis (CGN). The study's primary outcome was the survival rate at 24 months after dialysis induction. We performed a Kaplan-Meier analysis for cumulative survival and a Cox proportional hazards analysis for all-cause mortality and hospitalization.
    Results: We analyzed 636 patients' cases (424 males, 212 females, age 67.4 ± 13.1 yrs. [mean ± SD]). We compared the patients' baseline data with those of similar cohort studies. As the primary kidney disease, 327 cases (51.4%) were diagnosed as diabetic nephropathy, 101 (15.9%) as hypertensive nephrosclerosis, and 114 (17.9%) as CGN. The mean serum creatinine value was 9.1 ± 2.9 mg/dL. The mean estimated glomerular filtration rate was 5.6 ± 1.8 mL/min/1.73m
    Conclusions: Regarding the clinical characteristics of these newly induced dialysis patients, the same trend as in other cohort studies was observed. Another study is underway to explore prognostic factors based on the iDIC Study's findings.
    MeSH term(s) Aged ; Aged, 80 and over ; Cohort Studies ; Diabetic Nephropathies/diagnosis ; Female ; Glomerular Filtration Rate ; Humans ; Kidney Failure, Chronic/epidemiology ; Kidney Failure, Chronic/etiology ; Kidney Failure, Chronic/therapy ; Male ; Middle Aged ; Multicenter Studies as Topic ; Nephrosclerosis ; Proportional Hazards Models ; Prospective Studies ; Renal Dialysis/adverse effects
    Language English
    Publishing date 2022-03-15
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2041348-8
    ISSN 1471-2369 ; 1471-2369
    ISSN (online) 1471-2369
    ISSN 1471-2369
    DOI 10.1186/s12882-022-02729-3
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  5. Article ; Online: Serum soluble levels of the transmembrane activator and calcium-modulator and cyclophilin-ligand interactor in MPO-ANCA-associated renal vasculitis.

    Nagai, Miho / Hirayama, Kouichi / Ebihara, Itaru / Kobayashi, Masaki

    Clinical and experimental nephrology

    2015  Volume 19, Issue 4, Page(s) 759–760

    MeSH term(s) Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis/blood ; B-Cell Activating Factor/blood ; Humans ; Kidney Diseases/blood ; Transmembrane Activator and CAML Interactor Protein/blood
    Chemical Substances B-Cell Activating Factor ; TNFSF13B protein, human ; Transmembrane Activator and CAML Interactor Protein
    Language English
    Publishing date 2015-08
    Publishing country Japan
    Document type Letter
    ZDB-ID 1338768-6
    ISSN 1437-7799 ; 1342-1751
    ISSN (online) 1437-7799
    ISSN 1342-1751
    DOI 10.1007/s10157-015-1080-8
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  6. Article: Maintenance treatment using the purine-synthesis inhibitor mizoribine in a patient with relapsing thrombotic thrombocytopenic purpura.

    Kawamura, Tetsuya / Usui, Joichi / Nagai, Kei / Sakai, Kentaro / Ebihara, Itaru / Yamagata, Kunihiro

    CEN case reports

    2017  

    Abstract: Thrombotic thrombocytopenic purpura (TTP) is a rare but life-threatening disease. Although plasma exchange (PE) therapy and corticosteroids are standard remission induction and maintenance therapies, some patients are easily refractory and frequently ... ...

    Abstract Thrombotic thrombocytopenic purpura (TTP) is a rare but life-threatening disease. Although plasma exchange (PE) therapy and corticosteroids are standard remission induction and maintenance therapies, some patients are easily refractory and frequently relapse under treatment with this therapy, and require additional treatment. However, there are limited data about additional treatment interventions. We report a case of 56-year-old man who was hospitalized for fever, general fatigue and hemoglobinuria. Owing to the symptoms and the laboratory findings of hemolysis, he was diagnosed with TTP. He was treated with PE therapy and corticosteroids, and the TTP went into remission. However, his TTP relapsed and remission induction was attempted again. As a remission maintenance treatment, we used combination therapy with the purine-synthesis inhibitor mizoribine (MZR) and corticosteroids. The administration of MZR maintained disease activity with no adverse event for long periods and allowed us to gradually reduce the corticosteroids dose. Hence, we propose that MZR is an effective treatment for TTP maintenance.
    Language English
    Publishing date 2017-11-09
    Publishing country Japan
    Document type Journal Article
    ISSN 2192-4449
    ISSN 2192-4449
    DOI 10.1007/s13730-017-0285-y
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  7. Article ; Online: Serum decoy receptor 3 levels are associated with the disease activity of MPO-ANCA-associated renal vasculitis.

    Maruyama, Hiroshi / Hirayama, Kouichi / Nagai, Miho / Ebihara, Itaru / Shimohata, Homare / Kobayashi, Masaki

    Clinical rheumatology

    2016  Volume 35, Issue 10, Page(s) 2469–2476

    Abstract: Type 17 T-helper (Th17) cells have been suggested to be involved in the pathogenesis of antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV). Th17 cell proliferation is promoted by tumor necrosis factor (TNF)-like ligand 1A (TL1A), ... ...

    Abstract Type 17 T-helper (Th17) cells have been suggested to be involved in the pathogenesis of antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV). Th17 cell proliferation is promoted by tumor necrosis factor (TNF)-like ligand 1A (TL1A), which binds to death receptor 3 (DR3) expressed on Th17 cells. Decoy receptor 3 (DcR3) is known to block the TL1A-DR3 pathway by binding TL1A. To evaluate the Th17-TL1A systems as disease activity markers in AAV, we investigated the serum levels of TL1A and DcR3 in AAV patients. Serum IL-17, IL-23, TL1A, and DcR3 were measured by ELISA in 24 AAV patients with microscopic polyangiitis before the initial treatment, 24 AAV patients during remission, and 20 control subjects. There were no significant differences in serum IL-17, IL-23, and TL1A levels among the active-vasculitis patients, inactive-vasculitis patients, and controls. The mean serum DcR3 level was significantly higher in the active-vasculitis patients than in the inactive-vasculitis patients and controls (P < 0.0001, respectively). There were significant positive correlations between the serum DcR3 levels and Birmingham Vasculitis Activity Score (BVAS), myeloperoxidase (MPO)-ANCA titers, white blood cell counts, serum creatinine levels, and serum C-reactive protein levels. In a multiple regression analysis, there was a significant positive correlation between the serum DcR3 level and BVAS (β = 0.650, P = 0.0462). The mean BVAS level was significantly higher in the active-vasculitis patients with high serum DcR3 levels than in those with the low serum DcR3 levels (P = 0.0202). The serum level of DcR3 may be a useful marker for disease activity in AAV.
    MeSH term(s) Aged ; Aged, 80 and over ; Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis/blood ; Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis/diagnosis ; Antibodies, Antineutrophil Cytoplasmic/blood ; Biomarkers/blood ; Female ; Humans ; Interleukin-17/blood ; Interleukin-23/blood ; Kidney Diseases/blood ; Kidney Diseases/diagnosis ; Male ; Middle Aged ; Receptors, Tumor Necrosis Factor, Member 6b/blood ; Severity of Illness Index ; Tumor Necrosis Factor Ligand Superfamily Member 15/blood
    Chemical Substances Antibodies, Antineutrophil Cytoplasmic ; Biomarkers ; Interleukin-17 ; Interleukin-23 ; Receptors, Tumor Necrosis Factor, Member 6b ; TNFSF15 protein, human ; Tumor Necrosis Factor Ligand Superfamily Member 15
    Language English
    Publishing date 2016-10
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 604755-5
    ISSN 1434-9949 ; 0770-3198
    ISSN (online) 1434-9949
    ISSN 0770-3198
    DOI 10.1007/s10067-016-3321-y
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  8. Article ; Online: Methicillin-resistant Staphylococcus-aureus-associated glomerulonephritis on the decline: decreased incidence since the 1990s.

    Usui, Joichi / Kobayashi, Masaki / Ebihara, Itaru / Koyama, Akio / Yamagata, Kunihiro

    Clinical and experimental nephrology

    2010  Volume 15, Issue 1, Page(s) 184–186

    Abstract: We believe that bacterial-infection-associated glomerulonephritis (GN), so-called methicillin-resistant Staphylococcus aureus (MRSA)-GN, was exterminated in Japan. The control of bacterial infection is the most important part of infection-associated GN. ... ...

    Abstract We believe that bacterial-infection-associated glomerulonephritis (GN), so-called methicillin-resistant Staphylococcus aureus (MRSA)-GN, was exterminated in Japan. The control of bacterial infection is the most important part of infection-associated GN. In 1990s Japan, hospital-associated MRSA (HA-MRSA) caused MRSA-GN outbreaks. On the other hand, MRSA-GN incidence has been quite limited since 2000. This epidemiological transition suggests that antibacterial therapies and health programs for HA-MRSA infection in Japan were effective against MRSA-GN. Moreover, it appears that staphylococcal superantigens act in the pathogenesis of GN. The change of superantigen production might have influenced to the disappearance of MRSA-GN. If HA-MRSA-producing superantigen outbreaks occur in developing countries, our experience in Japan can provide guiding principles for preventing and eradicating GN.
    MeSH term(s) Glomerulonephritis/epidemiology ; Glomerulonephritis/etiology ; Glomerulonephritis/microbiology ; Humans ; Japan/epidemiology ; Methicillin-Resistant Staphylococcus aureus/pathogenicity ; Staphylococcal Infections/complications ; Staphylococcal Infections/epidemiology
    Language English
    Publishing date 2010-11-13
    Publishing country Japan
    Document type Letter ; Research Support, Non-U.S. Gov't
    ZDB-ID 1338768-6
    ISSN 1437-7799 ; 1342-1751
    ISSN (online) 1437-7799
    ISSN 1342-1751
    DOI 10.1007/s10157-010-0369-x
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  9. Article: Peritubular capillary lesions in post-streptococcal acute glomerulonephritis.

    Usui, Joichi / Ebihara, Itaru / Kaneko, Syuzou / Kobayashi, Masaki / Yamagata, Kunihiro

    NDT plus

    2009  Volume 3, Issue 1, Page(s) 91–92

    Language English
    Publishing date 2009-09-19
    Publishing country England
    Document type Journal Article
    ZDB-ID 2410383-4
    ISSN 1753-0784
    ISSN 1753-0784
    DOI 10.1093/ndtplus/sfp130
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  10. Article ; Online: Serum ratio of soluble triggering receptor expressed on myeloid cells-1 to creatinine is a useful marker of infectious complications in myeloperoxidase-antineutrophil cytoplasmic antibody-associated renal vasculitis.

    Hirayama, Kouichi / Nagai, Miho / Ebihara, Itaru / Shimohata, Homare / Kobayashi, Masaki / Koyama, Akio

    Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association

    2011  Volume 26, Issue 3, Page(s) 868–874

    Abstract: Background: The contribution of infections to the mortality of antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis patients is important and should induce early and careful control of these events. However, the differentiation of infection ... ...

    Abstract Background: The contribution of infections to the mortality of antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis patients is important and should induce early and careful control of these events. However, the differentiation of infection from active vasculitis is often difficult. The usefulness of serum-soluble triggering receptor expressed on myeloid cells-1 (TREM-1) for detecting the presence of infectious complications regardless of disease activity was investigated.
    Methods: Soluble TREM-1 in serum obtained from 41 patients with myeloperoxidase (MPO)-ANCA-associated vasculitis was measured by an enzyme-linked immunosorbent assay. Twenty-nine samples were from active vasculitis patients, 27 samples from inactive vasculitis patients without infection and 17 samples from inactive vasculitis patients with infectious complications. Serum-soluble TREM-1 was also measured in 10 patients with acute pyelonephritis and 30 patients with chronic kidney disease (CKD).
    Results: There was a significant correlation between serum levels of soluble TREM-1 and serum creatinine levels among all patients (r = 0.554, P < 0.0001). The serum-soluble TREM-1/creatinine ratio was higher in inactive vasculitis patients with infectious complications than in active vasculitis, inactive vasculitis without infection and CKD patients (P = 0.0005, P < 0.0001 and P < 0.0001, respectively), but not significantly different to that in acute pyelonephritis patients. On receiver-operating-characteristic curve analysis, a lower-limit value of 9.40 ng/mg for this ratio had a sensitivity of 84.6% and a specificity of 90.8% in differentiating patients with infection from those without infection.
    Conclusions: The serum ratio of soluble TREM-1 to creatinine may be a useful marker for detection of infectious complications in MPO-ANCA-associated vasculitis.
    MeSH term(s) Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis/complications ; Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis/diagnosis ; Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis/microbiology ; Bacterial Infections/blood ; Bacterial Infections/diagnosis ; Bacterial Infections/microbiology ; Biomarkers/blood ; Chronic Disease ; Creatinine/blood ; Enzyme-Linked Immunosorbent Assay ; Humans ; Kidney Diseases/blood ; Kidney Failure, Chronic ; Membrane Glycoproteins/blood ; Peroxidase/immunology ; ROC Curve ; Receptors, Immunologic/blood ; Sensitivity and Specificity ; Triggering Receptor Expressed on Myeloid Cells-1
    Chemical Substances Biomarkers ; Membrane Glycoproteins ; Receptors, Immunologic ; TREM1 protein, human ; Triggering Receptor Expressed on Myeloid Cells-1 ; Creatinine (AYI8EX34EU) ; Peroxidase (EC 1.11.1.7)
    Language English
    Publishing date 2011-03
    Publishing country England
    Document type Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 90594-x
    ISSN 1460-2385 ; 0931-0509
    ISSN (online) 1460-2385
    ISSN 0931-0509
    DOI 10.1093/ndt/gfq506
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