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Sakai S, Tanaka Y, Tsukamoto Y, Kimura-Ohba S, Hesaka A, Hamase K, Hsieh CL, Kawakami E, Ono H, Yokote K, Yoshino M, Okuzaki D, Matsumura H, Fukushima A, Mita M, Nakane M, Doi M, Isaka Y, Kimura T. d -Alanine Affects the Circadian Clock to Regulate Glucose Metabolism in the Kidney. Kidney360 2024; 5:237-251. [PMID: 38098136 PMCID: PMC10914205 DOI: 10.34067/kid.0000000000000345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 12/07/2023] [Indexed: 03/01/2024]
Abstract
Key Points d -Alanine affects the circadian clock to regulate gluconeogenesis in the kidney. d -Alanine itself has a clear intrinsic circadian rhythm, which is regulated by urinary excretion, and acts on the circadian rhythm. d -Alanine is a signal activator for circadian rhythm and gluconeogenesis through circadian transcriptional network. Background The aberrant glucose circadian rhythm is associated with the pathogenesis of diabetes. Similar to glucose metabolism in the kidney and liver, d -alanine, a rare enantiomer of alanine, shows circadian alteration, although the effect of d- alanine on glucose metabolism has not been explored. Here, we show that d- alanine acts on the circadian clock and affects glucose metabolism in the kidney. Methods The blood and urinary levels of d -alanine in mice were measured using two-dimensional high-performance liquid chromatography system. Metabolic effects of d -alanine were analyzed in mice and in primary culture of kidney proximal tubular cells from mice. Behavioral and gene expression analyses of circadian rhythm were performed using mice bred under constant darkness. Results d- Alanine levels in blood exhibited a clear intrinsic circadian rhythm. Since this rhythm was regulated by the kidney through urinary excretion, we examined the effect of d -alanine on the kidney. In the kidney, d -alanine induced the expressions of genes involved in gluconeogenesis and circadian rhythm. Treatment of d- alanine mediated glucose production in mice. Ex vivo glucose production assay demonstrated that the treatment of d -alanine induced glucose production in primary culture of kidney proximal tubular cells, where d -amino acids are known to be reabsorbed, but not in that of liver cells. Gluconeogenetic effect of d -alanine has an intraday variation, and this effect was in part mediated through circadian transcriptional network. Under constant darkness, treatment of d- alanine normalized the circadian cycle of behavior and kidney gene expressions. Conclusions d- Alanine induces gluconeogenesis in the kidney and adjusts the period of the circadian clock. Normalization of circadian cycle by d -alanine may provide the therapeutic options for life style–related diseases and shift workers.
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Affiliation(s)
- Shinsuke Sakai
- Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
- Reverse Translational Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
| | - Youichi Tanaka
- Department of Systems Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Yusuke Tsukamoto
- Reverse Translational Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
| | - Shihoko Kimura-Ohba
- Reverse Translational Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
| | - Atsushi Hesaka
- Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
- Reverse Translational Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
| | - Kenji Hamase
- Reverse Translational Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Chin-Ling Hsieh
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Eiryo Kawakami
- Reverse Translational Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
- Department of Artificial Intelligence Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
- Advanced Data Science (ADSP), RIKEN Information R&D and Strategy Headquarters, Yokohama, Kanagawa, Japan
- Institute for Advanced Academic Research (IAAR), Chiba University, Chiba, Japan
| | - Hiraku Ono
- Department of Endocrinology, Hematology and Gerontorogy, Graduate School of Medicine, Chiba University,Chiba, Japan
| | - Kotaro Yokote
- Department of Endocrinology, Hematology and Gerontorogy, Graduate School of Medicine, Chiba University,Chiba, Japan
| | - Mitsuaki Yoshino
- Laboratory of Rare Disease Information and Resource library, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Ibaraki, Osaka, Japan
| | - Daisuke Okuzaki
- Genome Information Research Center, Research Institute for Microbial Disease, Osaka University, Suita, Osaka, Japan
| | - Hiroyo Matsumura
- Reverse Translational Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
| | - Atsuko Fukushima
- Reverse Translational Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
| | | | | | - Masao Doi
- Department of Systems Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Yoshitaka Isaka
- Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Tomonori Kimura
- Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
- Reverse Translational Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka, Japan
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Imai E, Kaneko S, Hoshimoto A, Hisada R, Harano M, Anno E, Hagiwara S, Ozaki S, Torii H, Tsukamoto Y. Short term-efficacy and tolerability of Rheocarna, a novel direct hemoperfusion adsorptive column, for chronic limb-threatening ischemia in dialysis patients: A single-center case series. Ther Apher Dial 2023; 27:1010-1016. [PMID: 37605563 DOI: 10.1111/1744-9987.14049] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 12/28/2022] [Accepted: 02/22/2023] [Indexed: 08/23/2023]
Abstract
INTRODUCTION With population aging and lifestyle changes, the number of patients with chronic limb-threatening ischemia (CLTI) is increasing, and refractory or recurrent lesions are more common, especially in chronic dialysis patients. In March 2021, a new type of adsorptive cellulose bead column immobilized with dextran sulfate and L-tryptophan for direct hemoperfusion (DHP) was approved by Japan's medical insurance system as a treatment for CLTI. METHODS We retrospectively analyzed 17 cases of CLTI in dialysis patients treated with DHP using the novel column (Rheocarna) (DHP-R) at our hospital from May 2021 to October 2022. The short-term of efficacy of DHP-R was judged qualitatively by the foot care team every 2 weeks based on the assessment of skin color, warmth, ulcer epithelialization or shrinkage of the ulcer area, and foot pain. The final judgment of efficacy was made after the final DHP-R session. RESULTS The median age of patients was 66 years, the median dialysis duration was 10 years, 15 cases (88%) were male, and 15 cases (88%) had diabetes. The median total number of sessions was eight. In comparing the groups in which DHP-R was effective and ineffective, there was no significant difference in any factors including patient background data (i.e., age, diabetes, low-density lipoprotein cholesterol, hemoglobin, dialysis duration, etc.), type of anticoagulants, and presence of episodes of blood pressure drop or circuit clotting during session. Three cases with symptomatic hypotension during the session and two cases with circuit clotting that did not improve with increased heparin dose all resolved immediately after changing the anticoagulant from heparin to nafamostat mesylate (NM). CONCLUSION Identification of patients' characteristics in which DHP-R is favorable and some reliable index that allow a rapid decision to continue DHP-R are needed. In addition, validating whether the use of NM as anticoagulant affects the efficacy of DHP-R for CTLI treatment remains a challenge to resolve.
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Affiliation(s)
- Eri Imai
- Department of Nephrology, Itabashi-Chuo Medical Center, Tokyo, Japan
| | - Shuzo Kaneko
- Department of Nephrology, Itabashi-Chuo Medical Center, Tokyo, Japan
| | - Ainori Hoshimoto
- Department of Nephrology, Itabashi-Chuo Medical Center, Tokyo, Japan
| | - Rina Hisada
- Department of Nephrology, Itabashi-Chuo Medical Center, Tokyo, Japan
| | - Makiko Harano
- Department of Nephrology, Itabashi-Chuo Medical Center, Tokyo, Japan
| | - Emi Anno
- Department of Nephrology, Itabashi-Chuo Medical Center, Tokyo, Japan
| | - So Hagiwara
- Department of Nephrology, Itabashi-Chuo Medical Center, Tokyo, Japan
| | - Shunsuke Ozaki
- Department of Cardiology, Itabashi-Chuo Medical Center, Tokyo, Japan
| | - Hiroko Torii
- Department of Plastic surgery, Itabashi-Chuo Medical Center, Tokyo, Japan
| | - Yusuke Tsukamoto
- Department of Nephrology, Itabashi-Chuo Medical Center, Tokyo, Japan
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Mehrotra R, Davison SN, Farrington K, Flythe JE, Foo M, Madero M, Morton RL, Tsukamoto Y, Unruh ML, Cheung M, Jadoul M, Winkelmayer WC, Brown EA. Managing the symptom burden associated with maintenance dialysis: conclusions from a Kidney Disease: Improving Global Outcomes (KDIGO) Controversies Conference. Kidney Int 2023; 104:441-454. [PMID: 37290600 DOI: 10.1016/j.kint.2023.05.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [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: 01/06/2023] [Revised: 05/23/2023] [Accepted: 05/30/2023] [Indexed: 06/10/2023]
Abstract
Individuals with kidney failure undergoing maintenance dialysis frequently report a high symptom burden that can interfere with functioning and diminish life satisfaction. Until recently, the focus of nephrology care for dialysis patients has been related primarily to numerical targets for laboratory measures, and outcomes such as cardiovascular disease and mortality. Routine symptom assessment is not universal or standardized in dialysis care. Even when symptoms are identified, treatment options are limited and are initiated infrequently, in part because of a paucity of evidence in the dialysis population and the complexities of medication interactions in kidney failure. In May of 2022, Kidney Disease: Improving Global Outcomes (KDIGO) held a Controversies Conference-Symptom-Based Complications in Dialysis-to identify the optimal means for diagnosing and managing symptom-based complications in patients undergoing maintenance dialysis. Participants included patients, physicians, behavioral therapists, nurses, pharmacists, and clinical researchers. They outlined foundational principles and consensus points related to identifying and addressing symptoms experienced by patients undergoing dialysis and described gaps in the knowledge base and priorities for research. Healthcare delivery and education systems have a responsibility to provide individualized symptom assessment and management. Nephrology teams should take the lead in symptom management, although this does not necessarily mean taking ownership of all aspects of care. Even when options for clinical response are limited, clinicians should focus on acknowledging, prioritizing, and managing symptoms that are most important to individual patients. A recognized factor in the initiation and implementation of improvements in symptom assessment and management is that they will be based on locally existing needs and resources.
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Affiliation(s)
- Rajnish Mehrotra
- Division of Nephrology, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA.
| | - Sara N Davison
- Division of Nephrology and Immunology, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | | | - Jennifer E Flythe
- University of North Carolina Kidney Center, Division of Nephrology and Hypertension, Department of Medicine, UNC School of Medicine, Chapel Hill, North Carolina, USA; Cecil G. Sheps Center for Health Services Research, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Marjorie Foo
- Department of Renal Medicine, Singapore General Hospital, Singapore, Singapore
| | - Magdalena Madero
- Department of Medicine, Division of Nephrology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
| | - Rachael L Morton
- National Health and Medical Research Council (NHMRC) Clinical Trials Centre, The University of Sydney, Camperdown, New South Wales, Australia
| | - Yusuke Tsukamoto
- Department of Nephrology, Itabashi Medical System (IMS) Itabashi Chuo Medical Center, Tokyo, Japan
| | - Mark L Unruh
- Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
| | - Michael Cheung
- Kidney Disease: Improving Global Outcomes (KDIGO), Brussels, Belgium
| | - Michel Jadoul
- Cliniques Universitaires Saint Luc, Université Catholique de Louvain, Brussels, Belgium
| | - Wolfgang C Winkelmayer
- Selzman Institute for Kidney Health, Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Edwina A Brown
- Imperial College Renal and Transplant Centre, Hammersmith Hospital, London, UK.
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Kaneko S, Zen T, Banjoya S, Nuki T, Hoshimoto A, Harano M, Hagiwara S, Imai E, Tsukamoto Y. Successful Use of Granulocyte and Monocyte Adsorptive Apheresis in a Patient with Post-COVID-19 Multisystem Inflammatory Syndrome in Adults. Intern Med 2023; 62:2565-2569. [PMID: 37316277 PMCID: PMC10518551 DOI: 10.2169/internalmedicine.1728-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 05/01/2023] [Indexed: 06/16/2023] Open
Abstract
Multisystem inflammatory syndrome in adults (MIS-A) is a life-threatening disease that can develop weeks after coronavirus disease 2019 (COVID-19). MIS-A symptoms include multiorgan involvement, especially gastrointestinal tract and heart involvement, and Kawasaki disease-like symptoms. We herein report a 44-year-old Japanese man with MIS-A who had contracted COVID-19 five weeks ago and went into shock after acute gastroenteritis, acute kidney injury, and Kawasaki disease-like symptoms. Methylprednisone pulse and high-dose intravenous immunoglobulin resulted in recovery of shock and his renal function, but diffuse ST-segment elevation on electrocardiography and pericardial effusion with a fever emerged after therapy. Additional granulocyte-monocyte adsorptive apheresis successfully ameliorated the cardiac involvement.
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Affiliation(s)
- Shuzo Kaneko
- Department of Nephrology, Itabashi Chuo Medical Center, Japan
| | - Tsuyoshi Zen
- Department of Nephrology, Itabashi Chuo Medical Center, Japan
| | - Susumu Banjoya
- Department of Gastroenterology, Itabashi Chuo Medical Center, Japan
| | - Toshiaki Nuki
- Department of Cardiology, Itabashi Chuo Medical Center, Japan
| | | | - Makiko Harano
- Department of Nephrology, Itabashi Chuo Medical Center, Japan
| | - Sou Hagiwara
- Department of Nephrology, Itabashi Chuo Medical Center, Japan
| | - Eri Imai
- Department of Nephrology, Itabashi Chuo Medical Center, Japan
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Tsukamoto Y, Nakamura Y, Hirata M, Okuzaki D, Sakate R, Kimura T. GCN2 kinase-mediated upregulation of ubiquitin C maintains intracellular glutamine level and tRNA Gln (CUG) charging under amino acid starvation. FEBS Lett 2023. [PMID: 37079003 DOI: 10.1002/1873-3468.14628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 04/21/2023]
Abstract
Each tRNA is aminoacylated (charged) with a genetic codon-specific amino acid. It remains unclear what factors are associated with tRNA charging and how tRNA charging is maintained. By using the individual tRNA acylation PCR (i-tRAP) method, we found that the charging ratio of tRNAGln (CUG) reflects cellular glutamine level. When uncharged tRNAGln (CUG) increased under amino acid starvation, the kinase GCN2, which is a key stimulator of the integrated stress response, was activated. Activation of GCN2 led to the upregulation of ubiquitin C (UBC) expression. Upregulated UBC, in turn, suppressed the further reduction of tRNAGln (CUG) charging levels. Thus, tRNA charging is sensitive to intracellular nutrient status and is an important initiator of intracellular signaling.
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Affiliation(s)
- Yusuke Tsukamoto
- Reverse Translational Research Project, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Ibaraki, Osaka, 567-0085, Japan
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Ibaraki, Osaka, 567-0085, Japan
| | - Yumi Nakamura
- Reverse Translational Research Project, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Ibaraki, Osaka, 567-0085, Japan
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Ibaraki, Osaka, 567-0085, Japan
| | - Makoto Hirata
- Laboratory of Rare Disease Resource Library, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Ibaraki, Osaka, 567-0085, Japan
| | - Daisuke Okuzaki
- Genome Information Research Center, Research Institute for Microbial Disease, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Ryuichi Sakate
- Laboratory of Rare Disease Resource Library, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Ibaraki, Osaka, 567-0085, Japan
| | - Tomonori Kimura
- Reverse Translational Research Project, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Ibaraki, Osaka, 567-0085, Japan
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Ibaraki, Osaka, 567-0085, Japan
- Laboratory of Rare Disease Resource Library, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Ibaraki, Osaka, 567-0085, Japan
- Department of Nephrology, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
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Mochizuki H, Watanabe T, Komeyama S, Hada T, Seguchi O, Fujita T, Tsukamoto Y. Clinical Value of Newly Detected Donor−Specific HLA Antibodies for Predicting the Development of Pathological Antibody Mediated Rejection. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1109] [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: 04/05/2023] Open
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Hada T, Seguchi O, Komeyama S, Mochizuki H, Watanabe T, Fukushima S, Fujita T, Tsukamoto Y. Heart Transplantation Using Super Aged Donors at 65 Years and Over. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.574] [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: 04/05/2023] Open
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8
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Anno E, Sato Y, Hoshimoto A, Harano M, Hagiwara S, Imai E, Kaneko S, Tsukamoto Y. Association of serum electrolyte changes during haemodialysis with stimulation of premature ventricular contractions. Ren Replace Ther 2023. [DOI: 10.1186/s41100-023-00462-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Abstract
Background
Patients on haemodialysis are predisposed to heart rhythm disorders, including bradyarrhythmia, atrial fibrillation (AF)/atrial flutter, supraventricular/ventricular arrhythmias and sudden cardiac death (SCD) (Turakhia et al. in Eur Heart J 39:2314–2325, 2018). In addition to the fact that patients on haemodialysis have a high prevalence of underlying cardiac disease, the stress of haemodialysis itself might also contribute to increased rates of arrhythmias and SCD (Samanta et al. in Can J Cardiol 35:1228–1240, 2019).
Methods
A Holter 24-h electrocardiogram was set up immediately before the start of haemodialysis for 72 haemodialysis patients (dialysis vintage: 6–8734 days) to record premature ventricular contractions (PVCs) as a marker of arrhythmogenesis for 24 h. Blood samples were also collected every hour during haemodialysis treatment. Each patient was dialyzed against a dialysate consisting of Na+140 mEq/L, K+ 2.0 mEq/L, Ca+ 3.0 mEq/L, Mg2+ 1.0 mEq/L, Cl− 110 mEq/L, CH3COO− 8 mmol/L and HCO3− 30 mEq/L.
Results
The frequency of PVCs significantly increased in the 4th (80 ± 34 beats/hour, mean ± S.E.), 5th (79 ± 31 beats/hour) and 6th (105 ± 36 beats/hour) hours (F = 5.24, p < 0.00001, n = 72). The lowest left ventricular ejection fraction (LVEF, p = 0.001) and the highest b-type natriuretic peptide (BNP) levels (p = 0.049) were found in patients with the highest PVC counts. There was an association of positive changes in both serum K+ (β ± S.E., 9.7 ± 2.4, p = 0.0002), Mg2+ (43.2 ± 10.3, p = 0.0001) and HCO3− (5.3 ± 1.8, p = 0.005) with the frequency of PVCs for 4 h immediately after dialysis. During the same period, there was an association of lower serum K+ (− 8.37 ± 2.16, p = 0.0003) and higher Ca2+ (73.4 ± 18.0, p = 0.0002) with the frequency of PVCs.
Conclusions
Haemodialysis stimulated PVC generation, and this effect was especially prominent during the period immediately after haemodialysis. Some serum electrolyte changes affected this PVC stimulation. A positive change in serum K+ or Mg2+ and a negative change in serum Ca2+ during dialysis are risk factors for stimulating PVCs, particularly in patients with lower serum K+ or higher serum Ca2+ levels at the start of dialysis.
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Natsumeda M, Matsuzawa H, Watanabe M, Motohashi K, Gabdulkhaev R, Tsukamoto Y, Kanemaru Y, Watanabe J, Ogura R, Okada M, Kurabe S, Okamoto K, Kakita A, Igarashi H, Fujii Y. SWI by 7T MR Imaging for the Microscopic Imaging Diagnosis of Astrocytic and Oligodendroglial Tumors. AJNR Am J Neuroradiol 2022; 43:1575-1581. [PMID: 36229164 PMCID: PMC9731250 DOI: 10.3174/ajnr.a7666] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 08/21/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND AND PURPOSE Despite advances in molecular imaging, preoperative diagnosis of astrocytomas and oligodendrogliomas can be challenging. In the present study, we assessed whether 7T SWI can be used to distinguish astrocytomas and oligodendrogliomas and whether malignant grading of gliomas is possible. MATERIALS AND METHODS 7T SWI was performed on 21 patients with gliomas before surgery with optimization for sharp visualization of the corticomedullary junction. Scoring for cortical thickening and displacement of medullary vessels, characteristic of oligodendroglial tumors, and cortical tapering, characteristic of astrocytic tumors, was performed. Additionally, characteristics of malignancy, including thickening of the medullary veins, the presence of microbleeds, and/or necrosis were scored. RESULTS Scoring for oligodendroglial (highest possible score, +3) and astrocytic (lowest score possible, -3) characteristics yielded a significant difference between astrocytomas and oligodendrogliomas (mean, -1.93 versus +1.71, P < .01). Scoring for malignancy was significantly different among the World Health Organization grade II (n = 10), grade III (n = 4), and grade IV (n = 7) tumors (mean, 0.20 versus 1.38 versus 2.79). Cortical thickening was observed significantly more frequently in oligodendrogliomas (P < .02), with a sensitivity of 71.4% and specificity of 85.7%; observation of tapering of the cortex was higher in astrocytomas (P < .01) with a sensitivity of 85.7% and specificity of 100%. CONCLUSIONS Visualization of the corticomedullary junction by 7T SWI was useful in distinguishing astrocytomas and oligodendrogliomas. Observation of tapering of the cortex was most sensitive and specific for diagnosing astrocytomas. Reliably predicting malignant grade was also possible by 7T SWI.
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Affiliation(s)
- M Natsumeda
- From the Department of Neurosurgery (M.N., K.M., Y.T., Y.K., J.W., R.O., M.O., S.K., Y.F.)
| | - H Matsuzawa
- Center for Integrated Human Brain Science (H.M., M.W., H.I.)
| | - M Watanabe
- Center for Integrated Human Brain Science (H.M., M.W., H.I.)
| | - K Motohashi
- From the Department of Neurosurgery (M.N., K.M., Y.T., Y.K., J.W., R.O., M.O., S.K., Y.F.)
| | | | - Y Tsukamoto
- From the Department of Neurosurgery (M.N., K.M., Y.T., Y.K., J.W., R.O., M.O., S.K., Y.F.)
| | - Y Kanemaru
- From the Department of Neurosurgery (M.N., K.M., Y.T., Y.K., J.W., R.O., M.O., S.K., Y.F.)
| | - J Watanabe
- From the Department of Neurosurgery (M.N., K.M., Y.T., Y.K., J.W., R.O., M.O., S.K., Y.F.)
| | - R Ogura
- From the Department of Neurosurgery (M.N., K.M., Y.T., Y.K., J.W., R.O., M.O., S.K., Y.F.)
| | - M Okada
- From the Department of Neurosurgery (M.N., K.M., Y.T., Y.K., J.W., R.O., M.O., S.K., Y.F.)
| | - S Kurabe
- From the Department of Neurosurgery (M.N., K.M., Y.T., Y.K., J.W., R.O., M.O., S.K., Y.F.)
| | - K Okamoto
- Department of Translational Research (K.O.), Brain Research Institute, Niigata University, Niigata, Japan
| | - A Kakita
- Department of Pathology (R.G., A.K.)
| | - H Igarashi
- Center for Integrated Human Brain Science (H.M., M.W., H.I.)
| | - Y Fujii
- From the Department of Neurosurgery (M.N., K.M., Y.T., Y.K., J.W., R.O., M.O., S.K., Y.F.)
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10
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Tsukamoto Y, Nakamura Y, Hirata M, Sakate R, Kimura T. i-tRAP (individual tRNA acylation PCR): A convenient method for selective quantification of tRNA charging. RNA 2022; 29:rna.079323.122. [PMID: 36283829 PMCID: PMC9808569 DOI: 10.1261/rna.079323.122] [Citation(s) in RCA: 1] [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] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
Each transfer RNA (tRNA) is aminoacylated (charged) with a genetic codon-specific amino acid at its 3' end. Charged tRNAs are primarily used for translation, whereas fluctuations in charged tRNA fractions are known to reflect cellular response to stress. Here we report the development of individual tRNA-acylation using PCR (i-tRAP), a convenient PCR-based method that can specifically quantify individual tRNA charging ratio. In this i-tRAP method, demethylases remove base methylations which are problematic for reverse transcription reaction, and β-elimination reaction specifically removes the 3' end of adenine residue in uncharged tRNA. Subsequent TaqMan MGB qRT-PCR can distinguish between cDNA of charged tRNA and uncharged tRNA. By using this method, we revealed that the charging ratio of tRNAGln(CUG) was changed in response to amino acid starvation and also the charging ratio of tRNAGln(CUG) in senescent cells was lower than in young cells under starvation conditions. i-tRAP can be applicable to the quantification of charging ratio of various tRNAs, and provides a simple and convenient method for analyzing tRNA charging.
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Affiliation(s)
- Yusuke Tsukamoto
- National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN)
| | - Yumi Nakamura
- National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN)
| | - Makoto Hirata
- National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN)
| | - Ryuichi Sakate
- National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN)
| | - Tomonori Kimura
- National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN)
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11
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Komeyama S, Watanabe T, Yamagata K, Iwasaki Y, Hada T, Shimojima M, Mochizuki H, Tadokoro N, Kainuma S, Tsukamoto Y, Seguchi O, Fukushima S, Kusano K, Fujita T, Fukushima N. Successful Recovery from Refractory Hypoxia Due to Right-to-Left Shunting Associated with Iatrogenic Atrial Septal Defect After Catheter Ablation in a Patient with a Left Ventricular Assist Device. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.1731] [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: 12/01/2022] Open
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12
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Iwasaki Y, Seguchi O, Komeyama S, Hada T, Shimojima M, Mochizuki H, Watanabe T, Tsukamoto Y, Tadokoro N, Kainuma S, Fukushima S, Fujita T, Fukushima N. Two Cases of BK Polyoma Virus Nephropathy in Patients with Isolated Heart Transplantation: Clinical Usefulness of Urinary Cytology. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.1427] [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: 10/18/2022] Open
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13
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Sugita K, Kaneko S, Hisada R, Harano M, Anno E, Hagiwara S, Imai E, Nagata M, Tsukamoto Y. Development of IgA vasculitis with severe glomerulonephritis after COVID-19 vaccination: a case report and literature review. CEN Case Rep 2022; 11:436-441. [PMID: 35275366 PMCID: PMC8914443 DOI: 10.1007/s13730-022-00695-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [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: 02/02/2022] [Accepted: 02/18/2022] [Indexed: 11/25/2022] Open
Abstract
With the worldwide spread of the COVID-19 vaccine program during the COVID-19 pandemic, the numbers of reported cases with new-onset or relapsed kidney disease/vasculitis such as minimal change nephrotic syndrome, immunoglobulinA (IgA) nephropathy, and IgA vasculitis (IgAV) that developed after COVID-19 vaccination are increasing. We present the case of a 67-year-old Japanese woman who developed IgAV with purpura on her extremities and trunk in the evening of the day that she received the second dose of the Pfizer-BioNTech COVID-19 vaccine. She subsequently presented with acute kidney injury and nephrotic syndrome, and a kidney biopsy performed 14 days after the second vaccination showed diffuse mesangial and endocapillary glomerulonephritis with necrotizing crescent formation, accompanied by IgA deposition. One steroid pulse plus four administrations of a monthly intravenous cyclophosphamide injection were applied, followed by oral azathioprine during oral steroid tapering. Her response to this treatment was unsatisfactory and intractable for some time. Eventually, her renal function improved and nephrotic syndrome was resolved, while microscopic hematuria and proteinuria at ~ 1 g/gCr remained at 6 months post-vaccination. Unlike the previous milder renal-involved IgAV cases following COVID-19 vaccination, our patient’s case presented severe glomerulonephritis and took a long time to recover despite intensive initial immunosuppressive treatment.
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Affiliation(s)
- Kohei Sugita
- Department of Nephrology, Itabashi-Chuo Medical Center, Itabashi, Tokyo, Japan
| | - Shuzo Kaneko
- Department of Nephrology, Itabashi-Chuo Medical Center, Itabashi, Tokyo, Japan.
| | - Rina Hisada
- Department of Nephrology, Itabashi-Chuo Medical Center, Itabashi, Tokyo, Japan
| | - Makiko Harano
- Department of Nephrology, Itabashi-Chuo Medical Center, Itabashi, Tokyo, Japan
| | - Emi Anno
- Department of Nephrology, Itabashi-Chuo Medical Center, Itabashi, Tokyo, Japan
| | - Sou Hagiwara
- Department of Nephrology, Itabashi-Chuo Medical Center, Itabashi, Tokyo, Japan
| | - Eri Imai
- Department of Nephrology, Itabashi-Chuo Medical Center, Itabashi, Tokyo, Japan
| | - Michio Nagata
- Department of Pathology, Itabashi-Chuo Medical Center, Itabashi, Tokyo, Japan
| | - Yusuke Tsukamoto
- Department of Nephrology, Itabashi-Chuo Medical Center, Itabashi, Tokyo, Japan
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14
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Hesaka A, Tsukamoto Y, Nada S, Kawamura M, Ichimaru N, Sakai S, Nakane M, Mita M, Okuzaki D, Okada M, Isaka Y, Kimura T. d-Serine Mediates Cellular Proliferation for Kidney Remodeling. Kidney360 2021; 2:1611-1624. [PMID: 35372967 PMCID: PMC8785787 DOI: 10.34067/kid.0000832021] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 08/16/2021] [Indexed: 02/04/2023]
Abstract
Background d-serine, a long-term undetected enantiomer of serine, is a biomarker that reflects kidney function and disease activity. The physiologic functions of d-serine are unclear. Methods The dynamics of d-serine were assessed by measuring d-serine in human samples of living kidney donors using two-dimensional high-performance liquid chromatography, and by autoradiographic studies in mice. The effects of d-serine on the kidney were examined by gene expression profiling and metabolic studies using unilateral nephrectomy mice, and genetically modified cells. Results Unilateral nephrectomy in human living kidney donors decreases urinary excretion and thus increases the blood level of d-serine. d-serine is quickly and dominantly distributed to the kidney on injection in mice, suggesting the kidney is a main target organ. Treatment of d-serine at a low dose promotes the enlargement of remnant kidney in mouse model. Mechanistically, d-serine activates the cell cycle for tissue remodeling through an mTOR-related pathway. Conclusions d-serine is a physiologic molecule that promotes kidney remodeling. Besides its function as a biomarker, d-serine has a physiologic activity that influences kidney function.
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Affiliation(s)
- Atsushi Hesaka
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition,Reverse Translational Project, Center for Rare Disease Research, National Institutes of Biomedical Innovation, Health and Nutrition,Department of Nephrology, Osaka University Graduate School of Medicine
| | - Yusuke Tsukamoto
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition,Reverse Translational Project, Center for Rare Disease Research, National Institutes of Biomedical Innovation, Health and Nutrition
| | - Shigeyuki Nada
- Department of Oncogene Research, Research Institute for Microbial Diseases, Osaka University
| | | | - Naotsugu Ichimaru
- Department of Urology, Osaka University Graduate School of Medicine,Department of Advanced Technology for Transplantation, Osaka University Graduate School of Medicine
| | - Shinsuke Sakai
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition,Reverse Translational Project, Center for Rare Disease Research, National Institutes of Biomedical Innovation, Health and Nutrition,Department of Nephrology, Osaka University Graduate School of Medicine
| | | | | | - Daisuke Okuzaki
- Genome Information Research Center, Research Institute for Microbial Disease, Osaka University
| | - Masato Okada
- Department of Oncogene Research, Research Institute for Microbial Diseases, Osaka University
| | - Yoshitaka Isaka
- Department of Nephrology, Osaka University Graduate School of Medicine
| | - Tomonori Kimura
- KAGAMI Project, National Institutes of Biomedical Innovation, Health and Nutrition,Reverse Translational Project, Center for Rare Disease Research, National Institutes of Biomedical Innovation, Health and Nutrition,Department of Nephrology, Osaka University Graduate School of Medicine
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15
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Shiraki T, Ohtani T, Kioka H, Mizote I, Tsukamoto Y, Nakamura D, Yokoi K, Ide S, Nakamoto K, Takeda Y, Hikoso S, Sawa Y, Sakata Y. Serial evaluation of cardiac allograft vasculopathy after heart transplantation by dual-modality intravascular ultrasound and optical coherence tomography. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1293] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Cardiac allograft vasculopathy is a combination of the development of de novo plaque and the progression of donor-transmitted plaque.
Purpose
This study aimed to evaluate the development of de novo plaque and the progression of donor-transmitted plaque within 12-month after heart transplantation (HTx) using serial intravascular ultrasound (IVUS) and optical coherence tomography (OCT). The association between inflammatory cytokines and plaque progression was also examined.
Methods
We prospectively enrolled 40 recipients to conduct serial three-vessel IVUS and OCT analysis at 8-week and 12-month after HTx. De novo plaque was defined as having maximum intimal thickness (MIT) ≥0.5 mm at 12-month in the absence of donor-transmitted plaques (MIT ≥0.5 mm at 8-week). Serum cytokines were screened with a bead-based multiplex assay.
Results
A total of 13 de novo plaques (fibrous, n=10; fibroatheroma, n=3) were detected in eight recipients. Serum interleukin (IL)-31 at 8-week was associated with the development of de novo plaques (p=0.009). A total of 31 donor-transmitted plaques (fibrous, n=12; fibroatheroma, n=11; fibrocalcific, n=8) were detected in 17 recipients. Multiple regression analysis revealed that fibrous (p=0.026) and fibroatheroma (p=0.012) observed at 8-week were significantly associated with subsequent plaque progression within 12-month after HTx. ΔPlaque burden was significant higher in de novo plaque than donor-transmitted plaque (38.8% [29.6–41.2] versus 8.7% [1.3–13.6], p<0.001). The prevalence of macrophage accumulation was lower in de novo plaque than in donor-transmitted plaque (8% versus 52%, p=0.006). Serum IL-31 at 8-week was correlated with the progression of donor-transmitted plaque as well as de novo plaque (r=0.663, p=0.029) although other cytokines like IL-1β, IL-6, IL-17, and tissue necrotic factor alpha were not.
Conclusions
In de novo plaques, fibrous plaque was the most common and macrophage accumulation was rarely observed. In donor-transmitted plaque, fibrous and fibroatheroma were independent predictor for the subsequent plaque progression. Serum interleukin-31 surge at subacute phase may play pathogenic role in cardiac allograft vasculopathy.
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): Grants-in-Aid for Scientific Research (KAKENHI)
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Affiliation(s)
- T Shiraki
- Osaka University Graduate School of Medicine, Cardiovascular Medicine, Suita, Japan
| | - T Ohtani
- Osaka University Graduate School of Medicine, Cardiovascular Medicine, Suita, Japan
| | - H Kioka
- Osaka University Graduate School of Medicine, Cardiovascular Medicine, Suita, Japan
| | - I Mizote
- Osaka University Graduate School of Medicine, Cardiovascular Medicine, Suita, Japan
| | - Y Tsukamoto
- Osaka University Graduate School of Medicine, Cardiovascular Medicine, Suita, Japan
| | - D Nakamura
- Osaka University Graduate School of Medicine, Cardiovascular Medicine, Suita, Japan
| | - K Yokoi
- Osaka University Graduate School of Medicine, Cardiovascular Medicine, Suita, Japan
| | - S Ide
- Osaka University Graduate School of Medicine, Cardiovascular Medicine, Suita, Japan
| | - K Nakamoto
- Osaka University Graduate School of Medicine, Cardiovascular Medicine, Suita, Japan
| | - Y Takeda
- Osaka University Graduate School of Medicine, Cardiovascular Medicine, Suita, Japan
| | - S Hikoso
- Osaka University Graduate School of Medicine, Cardiovascular Medicine, Suita, Japan
| | - Y Sawa
- Osaka University Graduate School of Medicine, Cardiovascular Surgery, Suita, Japan
| | - Y Sakata
- Osaka University Graduate School of Medicine, Cardiovascular Medicine, Suita, Japan
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16
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Yasuda T, Matsunaga K, Hashimura T, Tsukamoto Y, Sueyoshi T, Ota S, Fujita S, Onishi E. AB1137 CLASSIFICATION OF THE EARLY STAGE OF RAPIDLY DESTRUCTIVE COXOPATHY ACCORDING TO THE FEMORAL HEAD DESTRUCTION. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Rapidly destructive coxopathy (RDC) is an unusual subset of osteoarthritis of the hip characterized by rapid chondrolysis with progressive loss of the joint space as the first manifestation of the disease. Because rapid progression of RDC makes it difficult to obtain sequential radiographs in its early stage, the process of disease progression in the early stage remains unclear. Although the pathogenesis of RDC is still unclarified, the potential causes of RDC include subchondral insufficiency fracture of the femoral head resulting from osteoporosis, pelvic posterior inclination in RDC as a mechanical factor, and increased serum levels of matrix metalloproteinase (MMP)-3 as a biological factor.Objectives:This study aimed to differentiate the process of disease progression in the early stage of RDC and provide its new classification system.Methods:This monocentric retrospective study included 42 female patients who met the criteria of RPOH, chondrolysis >2 mm during 12 months from the onset of hip pain based on a series of radiographs and computed tomography (CT). This study also included 9 female patients with osteoarthritis secondary to developmental dysplasia of the hip (DDH), who demonstrated chondrolysis >2 mm during 12 months from the onset of hip pain. Cortical thickness index (CTI) correlated with bone mineral density of the hip, pelvic tilt, and serum concentrations of matrix metalloproteinase (MMP)-3 were analyzed.Results:RDC were classified into two types based on the absence (type 1, n=17) and presence (type 2, n=25) of subsequent femoral head destruction shown by CT within 12 months after the onset of hip pain. MMP-3 significantly increased in RDC type 2 compared with type 1 and DDH. Increased posterior pelvic tilt was found in RDC type 2 compared with DDH. Logistic regression and receiver operating characteristic curve analyses indicated that MMP-3 may be associated with differentiation between RDC types 1 and 2. No difference was found in CTI between RDC types and DDH.RDC type 2 hips developed partial (type 2A) and massive (type 2B) femoral head destruction within the first 12 months. Whereas partial destruction showed <20% collapse ratio, massive destruction demonstrated >40% collapse ratio. Increased posterior pelvic tilt was found in massive destruction. Femoral head destruction started earlier within the first 6 months in massive destruction compared with that in partial destruction. From receiver operating characteristic curve analysis, pelvic tilt differentiated the femoral head destruction types using the initial radiograph at the onset before first demonstration of femoral head destruction. No difference was found in CTI or MMP-3 between the two subtypes.Conclusion:Disease progression of RDC during 12 months after the onset of hip pain could be classified into two distinct types based on the absence (type 1) and presence (type 2) of femoral head destruction in association with MMP-3 and pelvic tilt as biological and mechanical factors, respectively. MMP-3 may be helpful to differentiate those two types in the early stage of RPOH. The extent of femoral head destruction could further differentiate RDC type 2 into two subtypes based on pelvic tilt.Acknowledgments :This study was supported by the Japan Hip Joint Foundation.Disclosure of Interests:None declared
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17
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Wang AYM, Akizawa T, Bavanandan S, Hamano T, Liew A, Lu KC, Lumlertgul D, Oh KH, Zhao MH, Ka-Shun Fung S, Obi Y, Sumida K, Choong LHL, Goh BL, Hao CM, Kwon YJ, Tarng DC, Zuo L, Wheeler DC, Tsukamoto Y, Fukagawa M. 2017 Kidney Disease: Improving Global Outcomes (KDIGO) Chronic Kidney Disease-Mineral and Bone Disorder (CKD-MBD) Guideline Update Implementation: Asia Summit Conference Report. Kidney Int Rep 2019; 4:1523-1537. [PMID: 31890994 PMCID: PMC6933448 DOI: 10.1016/j.ekir.2019.09.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [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: 07/03/2019] [Revised: 09/09/2019] [Accepted: 09/09/2019] [Indexed: 01/21/2023] Open
Abstract
Improving Global Outcomes (KDIGO) Clinical Practice Guideline on Chronic Kidney Disease–Mineral and Bone Disorder (CKD–MBD) 2009 provided recommendations on the detection, evaluation, and treatment of CKD-MBD in patients CKD who are and are not undergoing dialysis. Because of the accumulation of evidence since this initial publication, the CKD-MBD Guideline underwent a selective update in 2017. In April 2018, KDIGO convened a CKD-MBD Guideline Implementation Summit in Japan with the key objective to discuss various barriers to the uptake and implementation of the CKD-MBD Guideline in 8 Asian countries/regions. These countries/regions were comparable according to their high-to-middle economic ranking assigned by the World Bank. The discussion took into account the availability of CKD-MBD medication therapies and government health policies that may influence reimbursement and practice patterns in the region. Most importantly, Summit participants developed a framework of multifaceted strategies aimed at overcoming barriers to guideline implementation. The Summit attendees suggested a shared decision-making approach between clinicians and patients in CKD-MBD management, as well as individualized care based on the treatment risk-benefit ratio. The Summit participants also discussed how KDIGO, as a guideline development organization, may work in partnership with local and national nephrology societies to provide education and facilitate implementation of the guideline by clinicians. The conclusions drawn from this Summit in Asia may serve as an important guide for other regions to follow.
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Affiliation(s)
- Angela Yee-Moon Wang
- Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China
| | - Tadao Akizawa
- Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - Sunita Bavanandan
- Department of Nephrology, Kuala Lumpur Hospital, Kuala Lumpur, Malaysia
| | - Takayuki Hamano
- Department of Comprehensive Kidney Disease Research, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Adrian Liew
- Department of Renal Medicine, Tan Tock Seng Hospital, Singapore
| | - Kuo-Cheng Lu
- Department of Internal Medicine, Cardinal Tien Hospital, School of Medicine, Fu-Jen Catholic University, New Taipei, Taiwan
| | - Dusit Lumlertgul
- Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Kook-Hwan Oh
- Department of Internal Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Ming-Hui Zhao
- Renal Division, Department of Medicine, Peking University First Hospital, China.,Peking-Tsinghua Center for Life Sciences, Beijing, PR, China
| | - Samuel Ka-Shun Fung
- Department of Medicine and Geriatrics, Jockey Club Nephrology and Urology Centre, Princess Margaret Hospital, Kowloon, Hong Kong SAR, China
| | - Yoshitsugu Obi
- Department of Medicine, University of California Irvine Medical Center, Orange, California, USA
| | - Keiichi Sumida
- Nephrology Center, Toranomon Hospital, Kawasaki, Kanagawa, Japan
| | | | - Bak Leong Goh
- Department of Nephrology, Serdang Hospital, Jalan Puchong, Kajang, Selangor, Malaysia
| | - Chuan-Ming Hao
- Division of Nephrology, Huashan Hospital, Fudan University, Shanghai, China
| | - Young-Joo Kwon
- Department of Internal Medicine, Korea University College of Medicine, Guro Hospital, Seoul, South Korea
| | - Der-Cherng Tarng
- Division of Nephrology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Li Zuo
- Department of Nephrology, Peking University People's Hospital, Beijing, China
| | - David C Wheeler
- Department of Renal Medicine, University College London, London, UK
| | - Yusuke Tsukamoto
- Department of Nephrology, Itabashi Chuo Medical Center, Tokyo, Japan
| | - Masafumi Fukagawa
- Division of Nephrology, Endocrinology, and Metabolism, Tokai University School of Medicine, Isehara, Japan
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18
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Cheung AK, Chang TI, Cushman WC, Furth SL, Ix JH, Pecoits-Filho R, Perkovic V, Sarnak MJ, Tobe SW, Tomson CR, Cheung M, Wheeler DC, Winkelmayer WC, Mann JF, Bakris GL, Damasceno A, Dwyer JP, Fried LF, Haynes R, Hirawa N, Holdaas H, Ibrahim HN, Ingelfinger JR, Iseki K, Khwaja A, Kimmel PL, Kovesdy CP, Ku E, Lerma EV, Luft FC, Lv J, McFadden CB, Muntner P, Myers MG, Navaneethan SD, Parati G, Peixoto AJ, Prasad R, Rahman M, Rocco MV, Rodrigues CIS, Roger SD, Stergiou GS, Tomlinson LA, Tonelli M, Toto RD, Tsukamoto Y, Walker R, Wang AYM, Wang J, Warady BA, Whelton PK, Williamson JD. Blood pressure in chronic kidney disease: conclusions from a Kidney Disease: Improving Global Outcomes (KDIGO) Controversies Conference. Kidney Int 2019; 95:1027-1036. [DOI: 10.1016/j.kint.2018.12.025] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 11/30/2018] [Accepted: 12/06/2018] [Indexed: 12/30/2022]
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Yamamoto K, Ikeda T, Tsukamoto Y, Nakaoka T. Novel crystalline organic–inorganic hybrid silicate material composed of the alternate stacking of semi-layered zeolite and microporous organic layers. RSC Adv 2019; 9:2641-2644. [PMID: 35520522 PMCID: PMC9059867 DOI: 10.1039/c8ra09908a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 12/02/2018] [Accepted: 01/08/2019] [Indexed: 11/21/2022] Open
Abstract
A novel crystalline organic–inorganic hybrid microporous silicate material was successfully synthesized from a lamellar precursor composed of amphiphilic organosilicic acids.
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Affiliation(s)
- Katsutoshi Yamamoto
- Faculty of Environmental Engineering
- The University of Kitakyushu
- Kitakyushu 808-0135
- Japan
| | - Takuji Ikeda
- Research Center for Compact Chemical System
- National Institute of Advanced Science and Technology
- Sendai 983-8551
- Japan
| | - Yusuke Tsukamoto
- Faculty of Environmental Engineering
- The University of Kitakyushu
- Kitakyushu 808-0135
- Japan
| | - Takuma Nakaoka
- Faculty of Environmental Engineering
- The University of Kitakyushu
- Kitakyushu 808-0135
- Japan
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20
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Togashi K, Takahashi N, Ando K, Tsukamoto Y, Marumo F. Comparison of Different Parathyroid Hormone Radioimmunoassays in Uremic Patients with Secondary Hyperparathyroidism. Int J Artif Organs 2018. [DOI: 10.1177/039139889001300204] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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
Parathyroid hormone (PTH) levels of patients with chronic renal failure (CRF) were measured by three different radioimmunoassays (RIA); RIA for mid-region PTH by antibody CH9 (i-PTH) (1), RIA for intact fragments of PTH (intact PTH) and RIA for C-terminal fragments of PTH (PTH-C). PTH levels were higher in CRF patients undergoing hemodialysis therapy (hemodialysis patients) by all three methods. However, PTH levels measured only by i-PTH assay and intact PTH assay were significantly higher in patients with CRF who were not on dialysis (non-dialyzed CRF patients). PTH levels were above normal when creatinine clearance was below 45 ml/min in the intact PTH assay and 66 ml/min in the i-PTH assay. I-PTH levels were well correlated with the severity of osteitis fibrosa evaluated by the degree of periosteal resorption in the digits of hemodialysis patients. Since special handling of the sample is required for the intact PTH assay, i-PTH assay is the most suitable method for diagnosing secondary hyperparathyroidism in patients with CRF.
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Affiliation(s)
- K. Togashi
- Kitasato Biochemical Laboratories, Kitasato University School of Medicine - Japan
| | - N. Takahashi
- Kitasato Biochemical Laboratories, Kitasato University School of Medicine - Japan
| | - K. Ando
- Kitasato Biochemical Laboratories, Kitasato University School of Medicine - Japan
| | - Y. Tsukamoto
- Department of Internal Medicine, Kitasato University School of Medicine - Japan
| | - F. Marumo
- Second Department of Internal Medicine, Tokyo Medical and Dental University - Japan
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21
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Tsukamoto Y, Ohtani T, Shiraki T, Ichibori Y, Saito S, Hikoso S, Toda K, Yamaguchi O, Sawa Y, Sakata Y. Baseline and 1-year Follow-up Serial Optical Coherence Tomography Evaluation of Coronary Plaques in Heart Transplant Recipients. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.1067] [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: 11/17/2022] Open
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22
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Fukumura K, Konuma T, Tsukamoto Y, Nagata S. Adipokinetic hormone signaling determines dietary fatty acid preference through maintenance of hemolymph fatty acid composition in the cricket Gryllus bimaculatus. Sci Rep 2018; 8:4737. [PMID: 29549314 PMCID: PMC5856772 DOI: 10.1038/s41598-018-22987-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 07/31/2017] [Accepted: 01/26/2018] [Indexed: 12/18/2022] Open
Abstract
Adipokinetic hormone (AKH), an analog of mammalian glucagon, functions in supplying the required energy by releasing lipids and carbohydrates from the fat body into the hemolymph. Our previous study showed that AKH receptor (AKHR) knockdown in the two-spotted cricket Gryllus bimaculatus decreased hemolymph lipid levels and increased its feeding frequency. To reveal underlying mechanisms by which AKH signaling modulates lipid homeostasis, we analyzed the fatty acid composition as the lipid structure in the crickets. AKH administration significantly increased the proportion of unsaturated fatty acids (USFAs) to total fatty acids with decrease of the saturated fatty acids (SFAs) in hemolymph, while these proportions were inversely changed in RNA interference-mediated AKHR-knockdowned (AKHRRNAi) crickets. Interestingly, knockdown of hormone-sensitive lipase (Hsl) by RNAi (HslRNAi) affected the proportion of USFAs and SFAs in a similar manner to that observed in AKHRRNAi crickets. AKH administration in HslRNAi crickets did not change hemolymph fatty acid composition, indicating that AKH signaling critically altered fatty acid composition in the hemolymph through Hsl. In addition, a choice assay revealed that AKHRRNAi significantly increases the preference of USFAs. These data indicate that hemolymph lipid level and composition were modulated by AKH signaling with a complementary feeding behavior toward USFAs.
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Affiliation(s)
- Keisuke Fukumura
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, 277-8562, Japan
| | - Takahiro Konuma
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, 277-8562, Japan
| | - Yusuke Tsukamoto
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, 277-8562, Japan
| | - Shinji Nagata
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, 277-8562, Japan.
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Tsukamoto Y, Ohtani T, Shiraki T, Ichibori Y, Saito S, Awata M, Toda K, Yamaguchi O, Sawa Y, Sakata Y. Serial Evaluation of Plaque Characteristics in Coronary Artery Lesions Using Optical Coherence Tomography After Heart Transplantation. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.1453] [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: 10/19/2022] Open
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Imai E, Kaneko S, Mori T, Okado T, Uchida S, Tsukamoto Y. Erratum: A novel heterozygous mutation in the ATP6V0A4 gene encoding the V-ATPase a4 subunit in an adult patient with incomplete distal renal tubular acidosis. Clin Kidney J 2016; 9:871. [PMID: 27994869 PMCID: PMC5162420 DOI: 10.1093/ckj/sfw114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Eri Imai
- Department of Nephrology, Itabashi Chuo Medical Center, Tokyo, Japan
| | - Shuzo Kaneko
- Department of Nephrology, Itabashi Chuo Medical Center, Tokyo, Japan
| | - Takayasu Mori
- 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
| | - Yusuke Tsukamoto
- Department of Nephrology, Itabashi Chuo Medical Center, Tokyo, Japan
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Tsukamoto Y. [Is it possible to-predict fracture in CKD patients?]. Clin Calcium 2016; 26:1295-1300. [PMID: 27561344] [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: 06/06/2023]
Abstract
Routine examination of bone mineral density(BMD)by DXA(dual energy X-ray absorptiometry)is useful to predict bone fracture in both CKD nondialysis and dialysis patients. The cutoff value of BMD to predict bone fracture is different between genders and its predictive power is better in patients with lower serum PTH levels than higher counterpart. Increase in serum bone specific alkaline phosphatase is a better predictor of the bone fracture than serum PTH levels.
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Affiliation(s)
- Yusuke Tsukamoto
- IMS Group Itabashi Chuo Medical Center Division of Nephrology, Japan
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Abstract
Ultrasonographic (US) angiography was performed by sonographic examination with injection of carbon dioxide microbubbles through a catheter following conventional angiography in 41 patients with various gallbladder diseases. Three enhancement patterns were found; strong enhancement in the lesion from the periphery to the center was noted in patients with adenocarcinoma and benign polyp (type I), irregular partial enhancement at the margins of the lesion in those with adenosquamous carcinoma (type II), and internal regular enhancement in those with chronic cholecystitis, xanthogranulomatous cholecystitis and adenomyomatosis (type III). Pseudopolypoid lesion such as gallbladder debris showed no enhancement. US angiography may be useful in the differential diagnosis of gallbladder diseases, especially to differentiate the wall thickening type of gallbladder carcinoma from chronic cholecystitis or adenomyomatosis, and the pseudopolypoid lesion and fundal type of adenomyomatosis from benign polyp or polypoid-type carcinoma.
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Tsukamoto Y, Nagata S. Newly identified allatostatin Bs and their receptor in the two-spotted cricket, Gryllus bimaculatus. Peptides 2016; 80:25-31. [PMID: 27018343 DOI: 10.1016/j.peptides.2016.03.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 03/22/2016] [Accepted: 03/23/2016] [Indexed: 01/11/2023]
Abstract
A cDNA encoding allatostatin Bs (ASTBs) containing the W(X)6W motif was identified using a database generated by a next generation sequencer (NGS) in the two-spotted cricket, Gryllus bimaculatus. The contig sequence revealed the presence of five novel putative ASTBs (GbASTBs) in addition to GbASTBs previously identified in G. bimaculatus. MALDI-TOF MS analyses revealed the presence of these novel and previously identified GbASTBs with three missing GbASTBs. We also identified a cDNA encoding G. bimaculatus GbASTB receptor (GbASTBR) in the NGS data. Phylogenetic analysis demonstrated that this receptor was highly conserved with other insect ASTBRs, including the sex peptide receptor of Drosophila melanogaster. Calcium imaging analyses indicated that the GbASTBR heterologously expressed in HEK293 cells exhibited responses to all identified GbASTBs at a concentration range of 10(-10)-10(-5)M.
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Affiliation(s)
- Yusuke Tsukamoto
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba 277-8567, Japan; Research Fellow of Japan Society for the Promotion of Science (JSPS), Japan
| | - Shinji Nagata
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba 277-8567, Japan.
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Konuma T, Tsukamoto Y, Nagasawa H, Nagata S. Imbalanced Hemolymph Lipid Levels Affect Feeding Motivation in the Two-Spotted Cricket, Gryllus bimaculatus. PLoS One 2016; 11:e0154841. [PMID: 27144650 PMCID: PMC4856397 DOI: 10.1371/journal.pone.0154841] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [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: 05/14/2013] [Accepted: 04/20/2016] [Indexed: 12/03/2022] Open
Abstract
Insect feeding behavior is regulated by many intrinsic factors, including hemolymph nutrient levels. Adipokinetic hormone (AKH) is a peptide factor that modulates hemolymph nutrient levels and regulates the nutritional state of insects by triggering the transfer of lipids into the hemolymph. We recently demonstrated that RNA interference (RNAi)-mediated knockdown of the AKH receptor (AKHR) reduces hemolymph lipid levels, causing an increase in the feeding frequency of the two-spotted cricket, Gryllus bimaculatus. This result indicated that reduced hemolymph lipid levels might motivate crickets to feed. In the present study, to elucidate whether hemolymph lipid levels contribute to insect feeding behavior, we attempted to manipulate hemolymph lipid levels via the lipophorin (Lp)-mediated lipid transferring system in G. bimaculatus. Of the constituent proteins in Lp, we focused on apolipophorin-III (GrybiApoLp-III) because of its possible role in facilitating lipid mobilization. First, we used RNAi to reduce the expression of GrybiApoLp-III. RNAi-mediated knockdown of GrybiApoLp-III had little effect on basal hemolymph lipid levels and the amount of food intake. In addition, hemolymph lipid levels remained static even after injecting AKH into GrybiApoLp-IIIRNAi crickets. These observations indicated that ApoLp-III does not maintain basal hemolymph lipid levels in crickets fed ad libitum, but is necessary for mobilizing lipid transfer into the hemolymph following AKH stimulation. Second, Lp (containing lipids) was injected into the hemolymph to induce a temporary increase in hemolymph lipid levels. Consequently, the initiation of feeding was delayed in a dose-dependent manner, indicating that increased hemolymph lipid levels reduced the motivation to feed. Taken together, these data validate the importance of basal hemolymph lipid levels in the control of energy homeostasis and for regulating feeding behavior in crickets.
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Affiliation(s)
- Takahiro Konuma
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, the University of Tokyo, Tokyo, Japan
| | - Yusuke Tsukamoto
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, the University of Tokyo, Chiba, Japan
| | - Hiromichi Nagasawa
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, the University of Tokyo, Tokyo, Japan
| | - Shinji Nagata
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, the University of Tokyo, Tokyo, Japan
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, the University of Tokyo, Chiba, Japan
- * E-mail:
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Nakamoto K, Ohtani T, Kioka H, Tsukamoto Y, Yoshioka D, Saito S, Toda K, Sawa Y, Sakata Y. Considering LV Dimension Is Important in Assessing the Risk of Right Ventricular Failure after Left Ventricular Assist Device Implantation. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.1104] [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: 10/22/2022] Open
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Imai E, Kaneko S, Mori T, Okado T, Uchida S, Tsukamoto Y. A novel heterozygous mutation in the ATP6V0A4 gene encoding the V-ATPase a4 subunit in an adult patient with incomplete distal renal tubular acidosis. Clin Kidney J 2016; 9:424-8. [PMID: 27274828 PMCID: PMC4886904 DOI: 10.1093/ckj/sfw008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [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: 11/28/2015] [Accepted: 01/18/2016] [Indexed: 11/30/2022] Open
Abstract
A 40-year-old Japanese man who had a medical history of hypokalemic periodic paralysis 4 months prior was hospitalized to undergo a cholecystectomy. Hypokalemia, nephrocalcinosis and alkaluria suggesting distal renal tubular acidosis (dRTA) were detected, but metabolic acidosis was not evident. An ammonium chloride/furosemide–fludrocortisone/bicarbonate loading test demonstrated a remarkable disability in urinary H+ excretion. A novel heterozygous mutation in the ATP6V0A4 gene encoding the vacuolar H+-ATPase (V-ATPase) a4 subunit p.S544L was detected. Among cases of V-ATPase a4 mutations, this is the first case in which a heterozygous mutation developed to an incomplete or latent form of dRTA.
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Affiliation(s)
- Eri Imai
- Department of Nephrology , Itabashi Chuo Medical Center , Tokyo , Japan
| | - Shuzo Kaneko
- Department of Nephrology , Itabashi Chuo Medical Center , Tokyo , Japan
| | - Takayasu Mori
- 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
| | - Yusuke Tsukamoto
- Department of Nephrology , Itabashi Chuo Medical Center , Tokyo , Japan
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Tsukamoto Y, Ikabata Y, Romero J, Reyes A, Nakai H. The divide-and-conquer second-order proton propagator method based on nuclear orbital plus molecular orbital theory for the efficient computation of proton binding energies. Phys Chem Chem Phys 2016; 18:27422-27431. [DOI: 10.1039/c6cp03786k] [Citation(s) in RCA: 9] [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: 11/21/2022]
Abstract
An efficient computational method to evaluate the binding energies of many protons in large systems was developed.
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Affiliation(s)
- Yusuke Tsukamoto
- Department of Chemistry and Biochemistry
- School of Advanced Science and Engineering
- Waseda University
- Tokyo 169-8555
- Japan
| | - Yasuhiro Ikabata
- Department of Chemistry and Biochemistry
- School of Advanced Science and Engineering
- Waseda University
- Tokyo 169-8555
- Japan
| | - Jonathan Romero
- Department of Chemistry
- Universidad Nacional de Colombia
- Bogotá
- Colombia
| | - Andrés Reyes
- Department of Chemistry
- Universidad Nacional de Colombia
- Bogotá
- Colombia
| | - Hiromi Nakai
- Department of Chemistry and Biochemistry
- School of Advanced Science and Engineering
- Waseda University
- Tokyo 169-8555
- Japan
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Macdougall IC, Bircher AJ, Eckardt KU, Obrador GT, Pollock CA, Stenvinkel P, Swinkels DW, Wanner C, Weiss G, Chertow GM, Adamson JW, Akizawa T, Anker SD, Auerbach M, Bárány P, Besarab A, Bhandari S, Cabantchik I, Collins AJ, Coyne DW, de Francisco ÁL, Fishbane S, Gaillard CA, Ganz T, Goldsmith DJ, Hershko C, Jankowska EA, Johansen KL, Kalantar-Zadeh K, Kalra PA, Kasiske BL, Locatelli F, Małyszko J, Mayer G, McMahon LP, Mikhail A, Nemeth E, Pai AB, Parfrey PS, Pecoits-Filho R, Roger SD, Rostoker G, Rottembourg J, Singh AK, Slotki I, Spinowitz BS, Tarng DC, Tentori F, Toblli JE, Tsukamoto Y, Vaziri ND, Winkelmayer WC, Wheeler DC, Zakharova E. Iron management in chronic kidney disease: conclusions from a “Kidney Disease: Improving Global Outcomes” (KDIGO) Controversies Conference. Kidney Int 2016; 89:28-39. [DOI: 10.1016/j.kint.2015.10.002] [Citation(s) in RCA: 167] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 09/22/2015] [Accepted: 09/29/2015] [Indexed: 12/21/2022]
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Ishigami J, Iimori S, Kuwahara M, Sasaki S, Tsukamoto Y. Diagnostic value of B-type natriuretic peptide for estimating left atrial size and its usefulness for predicting all-cause mortality and cardiovascular events among chronic haemodialysis patients. Nephrology (Carlton) 2015; 19:777-83. [PMID: 25142830 DOI: 10.1111/nep.12329] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/14/2014] [Indexed: 11/28/2022]
Abstract
AIM Estimating fluid balance in haemodialysis patients is essential when determining dry weight, but limited methods are currently available. B-type natriuretic peptide (BNP) is a useful surrogate marker in patients with congestive heart failure (CHF), but whether its validity could be generalized to haemodialysis patients has not been studied well. METHODS A total of 457 haemodialysis patients at a dialysis centre were analyzed. Determinants of BNP were assessed in connection with ultrasound cardiography (UCG) records, Kt/V, ultrafiltration rate (UFR), and demographic factors. All-cause death and cardiovascular (CV) events were recorded as the main outcome. RESULTS Among the UCG records, left atrial diameter (LAD), left ventricular ejection fraction (LVEF), were determinants of log-transformed (ln) BNP; UFR, age and sex were also significant. There was a positive correlation between BNP and LAD (r = 0.285, P < 0.001). Receiver operating characteristic (ROC) analysis revealed that BNP had 90% and 80% sensitivity to predict the presence of LA enlargement of 77.9 pg/mL and 133.2 pg/mL, respectively. Higher BNP and lower LVEF were associated with higher risk for developing all-cause death and CVD. In the adjusted model, patients with BNP higher than 471 pg/mL had hazard ratio of 2.18 (95% confidence interval (CI) 1.20-3.96, P = 0.01), compared to those with BNP <109 pg/mL. CONCLUSION B-type natriuretic peptide was determined by LAD, LVEF, UFR, age and sex. BNP and LAD had positive correlation and BNP could become a useful tool for estimating the presence of LA enlargement. BNP and LVEF was a strong risk factor for predicting all-cause death and CV events among patients undergoing haemodialysis.
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Affiliation(s)
- Junichi Ishigami
- Department of Nephrology, Shuuwa General Hospital, Saitama, Japan; Department of Nephrology, Tokyo Medical and Dental University, Tokyo, Japan
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Saito S, Toda K, Nakamura T, Miyagawa S, Yoshikawa Y, Fukushima S, Yoshioka D, Saito T, Tsukamoto Y, Ueno T, Kuratani T, Sakata Y, Sawa Y. Multidisciplinary Treatment for Acute Fulminant and Nonfulminant Myocarditis. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.609] [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: 11/16/2022] Open
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35
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Ikabata Y, Tsukamoto Y, Imamura Y, Nakai H. Local response dispersion method in periodic systems: Implementation and assessment. J Comput Chem 2014; 36:303-11. [DOI: 10.1002/jcc.23807] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2014] [Revised: 11/06/2014] [Accepted: 11/08/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Yasuhiro Ikabata
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering, Waseda University; 3-4-1 Okubo Shinjuku-ku Tokyo 169-8555 Japan
| | - Yusuke Tsukamoto
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering, Waseda University; 3-4-1 Okubo Shinjuku-ku Tokyo 169-8555 Japan
| | - Yutaka Imamura
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering, Waseda University; 3-4-1 Okubo Shinjuku-ku Tokyo 169-8555 Japan
| | - Hiromi Nakai
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering, Waseda University; 3-4-1 Okubo Shinjuku-ku Tokyo 169-8555 Japan
- Research Institute for Science and Engineering, Waseda University; 3-4-1 Okubo Shinjuku-ku Tokyo 169-8555 Japan
- CREST, Japan Science and Technology Agency; 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University; Katsura Kyoto 615-8520 Japan
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36
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Tsukamoto Y. [New Developments in CKD-MBD. How to "Thinking Global! Acting Local" for treating CKD-MBD]. Clin Calcium 2014; 24:1757-1761. [PMID: 25423919] [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: 06/04/2023]
Abstract
"Thinking Global! Acting Local" has been used to express a principle in implementing global guidelines in local. In case of KDIGO 2009 CKD-MBD guideline, Japanese Society of Dialysis Therapy followed the principal part of its global one and published 2012 CKD-MBD guideline for Japanese users. In this guideline, JSDT recommended very different PTH target from the KDIGO and emphasized the parathyroid interventions in their recommendation. Is it a right recommendation as for "Acting Local" ? We should be very careful to implement an opinion-base or low-level evidence-base recommendation to increase a clinical usefulness of guideline.
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Kai K, Nasu K, Aoyagi Y, Tsukamoto Y, Hijiya N, Okamoto M, Moriyama M, Narahara H. DR6 is epigenetically involved in the pathogenesis of endometriosis by creating the proliferative and anti-apoptotic characteristics. J Reprod Immunol 2014. [DOI: 10.1016/j.jri.2014.09.026] [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: 10/24/2022]
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Kaneko S, Hatakeyama Y, Tsukamoto Y. Acquired Fanconi syndrome due to long-term adefovir administration in a patient with IgG-kappa monoclonal gammopathy and kappa Bence-Jones protein. CEN Case Rep 2014; 3:188-194. [PMID: 28509196 DOI: 10.1007/s13730-014-0115-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 11/14/2013] [Accepted: 02/17/2014] [Indexed: 10/25/2022] Open
Abstract
A 77-year-old man was admitted to our hospital for a right femoral neck fracture. He had been prescribed lamivudine for chronic hepatitis B infection for 11 years, and adefovir was added 5 years ago. After hospitalization, a right femoral head prosthesis was performed successfully, but an unknown hypokalemia was revealed. Hypophosphatemia, hypouricemia, glucosuria, and panaminoaciduria were also revealed, and multiple microfractures were detected by bone scintigraphy. We diagnosed him as 'osteomalacia associated with Fanconi syndrome,' which was likely due to the adefovir. Moreover, a monoclonal IgG-kappa and a kappa Bence-Jones protein were detected in his serum and urine, respectively. We switched from adefovir plus lamivudine to entecavir and started calcitriol. His excessive urinary β2-microglobulin excretion and glucosuria had decreased dramatically at 10 weeks after the modification of drugs; those of the phosphate, uric acid and total protein, however, continued. Renal biopsy specimens obtained at 10 weeks after discontinuation of adefovir revealed focal tubular atrophic changes with/without inflammatory cells, which were predominantly observed next to glomeruli. Kappa-dominant staining was not observed in either glomeruli or tubules with immunostaining by the enzyme-labeled antibody method. Electron microscopy revealed neither crystalline structures in the cytoplasm of proximal tubules nor electron-dense deposits. Because of the remarkable proportional reduction of other urinary protein fractions, urinary M-peak appeared 26 weeks after discontinuation of adefovir, but the net amounts of the fraction decreased gradually.
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Affiliation(s)
- Shuzo Kaneko
- Department of Nephrology, Itabashi Chuo Medical Center, 2-12-7 Azusawa, Itabashiku, Tokyo, 174-0051, Japan.
| | - Yoshiyuki Hatakeyama
- Department of Nephrology, Itabashi Chuo Medical Center, 2-12-7 Azusawa, Itabashiku, Tokyo, 174-0051, Japan
| | - Yusuke Tsukamoto
- Department of Nephrology, Itabashi Chuo Medical Center, 2-12-7 Azusawa, Itabashiku, Tokyo, 174-0051, Japan
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39
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Nakajima H, Kaneko S, Takano T, Hoshino T, Sato Y, Kawase T, Tsukamoto Y. Analysis of protein removal properties during cryofiltration apheresis using the Evaflux-5A plasma fractionator in a patient with hepatitis C virus-associated cryoglobulinemic glomerulonephritis. Ther Apher Dial 2014; 18:258-64. [PMID: 24965292 DOI: 10.1111/1744-9987.12213] [Citation(s) in RCA: 5] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Cryofiltration (CF) is a technique in which separated plasma is chilled before being subjected to a plasma fractionator (PF), leading to cryoglobulin precipitation or cryogel formation. In CF using the Evaflux-5A as the PF, there is no consensus on the necessity of albumin supplementation, and when or how often the PF column should be washed. We analyzed the sieving effects of various solutes (albumin, IgG, IgM, LDL, HCV-RNA, and cryoglobulin) depending on transmembrane pressure (TMPPF ) during CF using the Evaflux-5A in a patient with hepatitis C virus-associated cryoglobulinemic glomerulonephritis. Five CF treatments were initially performed and a sixth one later, at disease recurrence. Quantitative detection of cryoglobulin and a marked rise in TMPPF to 400 mm Hg were observed only at the first and sixth treatment, and albumin losses during these treatments were very high, at 16.8 g, and 14.6 g, respectively, while those of others (from the second to fifth) were 6.7 g, 6.4 g, 5.9 g, and 7.0 g, respectively. The sieving coefficients (SCs) of both albumin and IgG were stable (0.8-1.0) at TMPPF < 200 mm Hg, but significantly decreased at TMPPF ≥ 200 mm Hg (P < 0.01). The SC of IgM tended to decrease at TMPPF ≥ 200 mm Hg, but not significantly, while that of LDL was zero regardless of the TMPPF . Albumin loss per treatment likely depends on degree of TMPPF rise, which is mainly affected by the patient's cryoglobulinemic status. In CF using Evaflux-5A, washing the PF column to keep TMPPF < 200 mm Hg during treatment may be a recommended for selective removal and albumin salvage.
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Affiliation(s)
- Hirofumi Nakajima
- Department of Clinical Engineering, Itabashi Chuo Medical Center, Tokyo, Japan
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40
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Tsukamoto Y, Kataoka H, Nagasawa H, Nagata S. Mating changes the female dietary preference in the two-spotted cricket, Gryllus bimaculatus. Front Physiol 2014; 5:95. [PMID: 24659970 PMCID: PMC3952122 DOI: 10.3389/fphys.2014.00095] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [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: 10/30/2013] [Accepted: 02/24/2014] [Indexed: 01/19/2023] Open
Abstract
Most insect species exhibit characteristic behavioral changes after mating. Typical post-mating behaviors in female insects include noticeable increases in food intake, elevated oviposition rates, lowered receptivity to courting males, and enhanced immune response. Although it has been reported that mated females of several insect species including the fruit fly, Drosophila melanogaster increase the amount of food intake and change their dietary preferences, the limited number of comparative studies prevent the formulation of generalities regarding post-mating behaviors in other insects in particular amongst orthopteran species. Here, we investigated whether females of the two-spotted cricket, Gryllus bimaculatus, alter their feeding behavior after mating. Although significant differences in the amount of food intake after mating were not observed, all experimental data indicated a clear trend among crickets toward the ingestion of larger quantities of food. Geometric framework analyses revealed that the mated female crickets preferred food with higher protein content compared to virgin female crickets. This implies that this species required different nutritional demands after mating. These findings further expand our understanding of the behavioral and biological changes that are triggered in female insects post-mating, and highlight the potential for this species in investigating the molecular-based nutritional dependent activities that are linked to post-mating behaviors.
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Affiliation(s)
- Yusuke Tsukamoto
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of TokyoChiba, Japan
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of TokyoTokyo, Japan
| | - Hiroshi Kataoka
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of TokyoChiba, Japan
| | - Hiromichi Nagasawa
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of TokyoTokyo, Japan
| | - Shinji Nagata
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of TokyoChiba, Japan
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of TokyoTokyo, Japan
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Kobayashi A, Futami T, Tsukamoto Y. Flexor tendon rupture in the rheumatoid wrist caused by bony spurs in the carpal tunnel. Mod Rheumatol 2014; 11:136-9. [DOI: 10.3109/s101650170025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Fujihara R, Usui M, Yamamoto G, Nishii K, Tsukamoto Y, Okamatsu Y, Sato T, Asou Y, Nakashima K, Yamamoto M. Tumor necrosis factor-α enhances RANKL expression in gingival epithelial cells via protein kinase A signaling. J Periodontal Res 2013; 49:508-17. [DOI: 10.1111/jre.12131] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/02/2013] [Indexed: 01/11/2023]
Affiliation(s)
- R. Fujihara
- Department of Periodontology; Showa University School of Dentistry; Tokyo Japan
| | - M. Usui
- Department of Periodontology; Showa University School of Dentistry; Tokyo Japan
- Division of Periodontology; Departmetnt of Cariology and Periodontology; Kyushu Dental University; Kitakyushu City Fukuoka Japan
| | - G. Yamamoto
- Department of Oral Pathology and Diagnosis; Showa University School of Dentistry; Tokyo Japan
| | - K. Nishii
- Department of Periodontology; Showa University School of Dentistry; Tokyo Japan
- Department of Oral Pathology and Diagnosis; Showa University School of Dentistry; Tokyo Japan
| | - Y. Tsukamoto
- Department of Periodontology; Showa University School of Dentistry; Tokyo Japan
| | - Y. Okamatsu
- Dental Clinic; Showa University Medical Hospital; Tokyo Japan
| | - T. Sato
- Department of Oral and Maxillofacial Surgery; Saitama Medical University; Saitama Japan
| | - Y. Asou
- Department of Orthopaedic Surgery; Tokyo Medical and Dental University; Tokyo Japan
| | - K. Nakashima
- Division of Periodontology; Departmetnt of Cariology and Periodontology; Kyushu Dental University; Kitakyushu City Fukuoka Japan
| | - M. Yamamoto
- Department of Periodontology; Showa University School of Dentistry; Tokyo Japan
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43
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Nitta K, Ozaki K, Tsukamoto Y, Hosono M, Ogawakonno Y, Kawauchi H, Takayanagi Y, Tsuiki S, Hakomori S. Catalytic lectin (leczyme) from bullfrog (Rana catesbeiana) eggs. Int J Oncol 2013; 9:19-23. [PMID: 21541475 DOI: 10.3892/ijo.9.1.19] [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: 11/05/2022] Open
Abstract
Catalytic lectins (leczymes) of frog eggs are sialic acid-binding lectins that have intrinsic RNase activity. They inhibit tumor cell proliferation in vitro and in vivo, although their cytotoxic mechanism remains unclear. RNase A has no tumoricidal activity. It is hypothesized that leczymes bind to cell surface sialoglycoconjugate receptors, enter the cell, and subsequently degrade RNA. In order to investigate the cytotoxic mechanism of cSBL, a leczyme from Rana catesbeiana eggs, we established cSBL-resistant clone RC-150 from mouse leukemia P388 cells. cSBL-treated P388 cells showed extensive RNA degradation over the course of 1 h, whereas cSBL-treated RC-150 cells showed no RNA degradation even over the course of 24 h. Treatment of P388 cells with cSBL led to decreased concentration of intracellular Ca2+, decreased protein kinase A activity, and increased protein kinase G activity. Incubation with cSBL decreased glutathione levels and enhanced glutathione-S-transferase (GST) activity in P388 cells, but had no effect on RC-150 cells. We conclude that cSBL-specific degradation of RNA occurs in cSBL-sensitive tumor cells, that cSBL leads to alteration of signal transduction and an intracellular protein kinase cascade reaction, and that internalized cSBL is detoxified by GST or thioltransferase. Our findings support a bifunctional model in which a leczyme is both an adhesive protein (binding to sialoglycoconjugates) and an enzyme (displaying RNnase activity).
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Affiliation(s)
- K Nitta
- UNIV WASHINGTON, SEATTLE, WA 98119 USA. BIOMEMBRANE INST, SEATTLE, WA 98119 USA
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44
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Fukagawa M, Yokoyama K, Koiwa F, Taniguchi M, Shoji T, Kazama JJ, Komaba H, Ando R, Kakuta T, Fujii H, Nakayama M, Shibagaki Y, Fukumoto S, Fujii N, Hattori M, Ashida A, Iseki K, Shigematsu T, Tsukamoto Y, Tsubakihara Y, Tomo T, Hirakata H, Akizawa T. Clinical Practice Guideline for the Management of Chronic Kidney Disease-Mineral and Bone Disorder. Ther Apher Dial 2013; 17:247-88. [DOI: 10.1111/1744-9987.12058] [Citation(s) in RCA: 251] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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45
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Kaneko S, Tsukamoto Y. Two cases of eating disorder revealed by the breakout of acute kidney injury after angiotensin II receptor blocker administration. CEN Case Rep 2013; 2:112-116. [PMID: 28509231 PMCID: PMC5411522 DOI: 10.1007/s13730-012-0055-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 10/02/2012] [Accepted: 12/09/2012] [Indexed: 11/28/2022] Open
Abstract
Case 1: A 39-year-old woman with schizophrenia, obesity, hypertension and dyslipidemia was admitted to our hospital for deteriorating serum Cr level, from 97.2 to 645.3 µmol/l. She had been started on losartan 5 months earlier. After suspension of losartan and infusion of saline, her serum Cr level gradually recovered and she was discharged. Unfortunately, her physician restarted her on losartan, and 5 months after this discharge, her serum Cr level rose again to 194.5 μmol/l; again, serum Cr promptly recovered when losartan was discontinued. Self-induced vomiting after overeating, suggesting bulimia nervosa, was revealed via the detection of a remarkable reduction of chloride compared to sodium in her spot-urine sample. Case 2: A 39-year-old woman who had been diagnosed with bipolar disorder and diabetes mellitus was admitted to our hospital with suspected diabetic ketoacidosis. After improvement in her blood sugar level, olmesartan administration for hypertension was begun. Four days later, her serum Cr level had risen from 60.1 to 256.4 μmol/l. After suspension of olmesartan and infusion of saline, her serum Cr level gradually fell to normal levels. Urinalysis revealed the dissociation of sodium and chloride. During her hospitalization, habitual self-induced vomiting was discovered. The measurement of urinary electrolytes may be useful for the detection of eating disorders with self-induced vomiting; in these patients, the administration of angiotensin II receptor blockers may induce acute kidney injury.
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Affiliation(s)
- Shuzo Kaneko
- Department of Nephrology, Itabashi Chuo Medical Center, 2-12-7 Azusawa, Itabashiku, Tokyo, 174-0051, Japan.
| | - Yusuke Tsukamoto
- Department of Nephrology, Itabashi Chuo Medical Center, 2-12-7 Azusawa, Itabashiku, Tokyo, 174-0051, Japan
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46
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Kaneko S, Tsukamoto Y, Abe K, Yonamine M, Hasegawa S, Hikida H. A case of MPO- and PR3-ANCA-negative pauci-immune renal-limited small-vessel vasculitis associated with endometrial neuroendocrine small cell carcinoma. CEN Case Rep 2013; 2:123-127. [PMID: 28509232 DOI: 10.1007/s13730-012-0057-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 10/23/2012] [Accepted: 12/24/2012] [Indexed: 10/27/2022] Open
Abstract
A 69-year-old woman was admitted to our hospital for rapid increase in serum creatinine level with microscopic hematuria and nephrotic-range proteinuria. Three months prior to admission, she became aware of atypical genital bleeding, leading her gynecologist to suspect endometrial cancer. Light microscopy examination of renal biopsy revealed crescentic glomerulonephritis with peritubular capillaritis. Immunofluorescence microscopic examination did not detect any significant staining, and no electron-dense deposits were detected by electron microscopy. No autoantibodies, including anti-myeloperoxidase- or anti-proteinase3-anti-neutrophil cytoplasmic antibodies were detected. The patient underwent total abdominal hysterectomy and bilateral salpingo-oophorectomy and was found to have endometrial neuroendocrine small cell carcinoma (NSCC), stage 1B. In her clinical course, her serum creatinine level gradually improved without immunosuppression therapy. Endometrial NSCC is a rare endometrial malignancy. This is the first case report of vasculitis associated with NSCC originating from the uterus.
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Affiliation(s)
- Shuzo Kaneko
- Department of Nephrology, Itabashi Chuo Medical Center, 2-12-7 Azusawa, Itabashiku, Tokyo, 174-0051, Japan.
| | - Yusuke Tsukamoto
- Department of Nephrology, Itabashi Chuo Medical Center, 2-12-7 Azusawa, Itabashiku, Tokyo, 174-0051, Japan
| | - Kazuya Abe
- Department of Obstetrics and Gynecology, Itabashi Chuo Medical Center, 2-12-7 Azusawa, Itabashiku, Tokyo, 174-0051, Japan
| | - Masayuki Yonamine
- Department of Obstetrics and Gynecology, Itabashi Chuo Medical Center, 2-12-7 Azusawa, Itabashiku, Tokyo, 174-0051, Japan
| | - Sumiko Hasegawa
- Department of Obstetrics and Gynecology, Itabashi Chuo Medical Center, 2-12-7 Azusawa, Itabashiku, Tokyo, 174-0051, Japan
| | - Hiromi Hikida
- Department of Obstetrics and Gynecology, Itabashi Chuo Medical Center, 2-12-7 Azusawa, Itabashiku, Tokyo, 174-0051, Japan
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Nishii K, Usui M, Yamamoto G, Yajima S, Tsukamoto Y, Tanaka J, Tachikawa T, Yamamoto M. The distribution and expression of S100A8 and S100A9 in gingival epithelium of mice. J Periodontal Res 2012; 48:235-42. [DOI: 10.1111/jre.12000] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/18/2012] [Indexed: 01/08/2023]
Affiliation(s)
- K. Nishii
- Department of Periodontology; Showa University School of Dentistry; Ohta-ku Tokyo Japan
- Department of Oral Pathology and Diagnosis; Showa University School of Dentistry; Shinagawa-ku Tokyo Japan
| | - M. Usui
- Department of Periodontology; Showa University School of Dentistry; Ohta-ku Tokyo Japan
- Department of Periodontology; Kyushu Dental College; Kokurakita-ku Kitakyushu city Fukuoka Japan
| | - G. Yamamoto
- Department of Oral Pathology and Diagnosis; Showa University School of Dentistry; Shinagawa-ku Tokyo Japan
| | - S. Yajima
- Department of Periodontology; Showa University School of Dentistry; Ohta-ku Tokyo Japan
- Department of Oral Pathology and Diagnosis; Showa University School of Dentistry; Shinagawa-ku Tokyo Japan
| | - Y. Tsukamoto
- Department of Periodontology; Showa University School of Dentistry; Ohta-ku Tokyo Japan
| | - J. Tanaka
- Department of Oral Pathology and Diagnosis; Showa University School of Dentistry; Shinagawa-ku Tokyo Japan
| | - T. Tachikawa
- Department of Oral Pathology and Diagnosis; Showa University School of Dentistry; Shinagawa-ku Tokyo Japan
- Comprehensive Research Center of Oral Cancer; Showa University School of Dentistry; Shinagawa-ku Tokyo Japan
| | - M. Yamamoto
- Department of Periodontology; Showa University School of Dentistry; Ohta-ku Tokyo Japan
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48
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Kuwahara M, Ishigami J, Shikuma S, Akita W, Mori Y, Asai T, Tsukamoto Y, Adachi S, Noda Y, Rai T, Uchida S, Sasaki S. Type II Diabetes Mellitus Is a Risk Factor for Heart Failure in Pre-Dialysis Patients. Ther Apher Dial 2012. [DOI: 10.1111/j.1744-9987.2012.01090.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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49
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Tsukamoto Y. [Kidney and bone update : the 5-year history and future of CKD-MBD. Bone biopsy and histomorphometrical analysis]. Clin Calcium 2012; 22:1019-1024. [PMID: 22750934] [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: 06/01/2023]
Abstract
In the KDIGO CKD-MBD guideline, the disorder "renal osteodystrophy" is defined as bone histological changes, which can be diagnosed only by bone biopsy. New bone diagnosis method, "TMV classification" is introduced instead of classical classification system. In order to diagnose TMV classification, undecalcified bone specimen after tetracycline double labeling is required. In TMV classification, "T" stands for bone turnover and is evaluated by bone formation rate (BFR/BS) or activation frequency (Acf) . "M" stands for bone mineralization and is evaluated by mean osteoid thickness (O.Th) and mineralization lag time (Mlt) . "V" stands for cancellous bone volume and is diagnosed by total bone volume (BV/TV) .
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50
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Tsukamoto Y, Usui M, Yamamoto G, Takagi Y, Tachikawa T, Yamamoto M, Nakamura M. Role of the junctional epithelium in periodontal innate defense and homeostasis. J Periodontal Res 2012; 47:750-7. [PMID: 22587460 DOI: 10.1111/j.1600-0765.2012.01490.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVE The junctional epithelium provides the front-line defense against periodontal bacterial infection. The migration of neutrophils into the junctional epithelium might represent a protective reaction against bacterial infections. However, neutrophils penetrate into the junctional epithelium even under sterile conditions. In this study, we analyzed and compared the number of neutrophils and the cytokine expression related to neutrophil migration in the junctional epithelium in conventional and germ-free mice. MATERIAL AND METHODS Germ-free and conventional ICR mice were used at 12 wk of age. Frozen sections were used for the detection of Gr-1, macrophage inflammatory protein-2 (MIP-2/CXCL2) and proliferating cell nuclear antigen-positive cells in the two groups of mice. Laser capture microdissection and RT-PCR analysis were used to evaluate the expression of keratinocyte-derived chemokine (KC/CXCL1), MIP-2, interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α) mRNAs in the two groups of mice. RESULTS Morphometric examination indicated an increase in the area of the junctional epithelium upon bacterial infection. Immunohistochemical studies also detected an increased number of neutrophils in the junctional epithelium upon bacterial infection. Higher up-regulation of KC and MIP-2 were detected in the junctional epithelium of conventional mice than in germ-free mice, whereas the expression of Il-1β and Tnfα mRNAs was not affected. CONCLUSION Junctional epithelium cells constitutively expressed several types of chemokines and cytokines and the expression of chemokines was augmented by bacterial infection. Therefore, the constitutive expression of cytokines in junctional epithelium might be related to the morphological and functional homeostasis of the junctional epithelium in addition to the defense against the bacterial infection.
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Affiliation(s)
- Y Tsukamoto
- Department of Oral Anatomy and Developmental Biology, Showa University School of Dentistry, Shinagawa-ku, Tokyo, Japan
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