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Uemura S, Mochizuki T, Kato Y, Mioka T, Watanabe R, Fuchita M, Yamada M, Noda Y, Moriguchi T, Abe F. Mtc6/Ehg2 is a novel endoplasmic reticulum-resident glycoprotein essential for high-pressure tolerance. J Biochem 2024:mvae035. [PMID: 38621657 DOI: 10.1093/jb/mvae035] [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: 01/28/2024] [Revised: 04/01/2024] [Accepted: 04/03/2024] [Indexed: 04/17/2024] Open
Abstract
Hydrostatic pressure is a common mechanical stressor that modulates metabolism and reduces cell viability. Eukaryotic cells have genetic programs to cope with hydrostatic pressure stress and maintain intracellular homeostasis. However, the mechanism underlying hydrostatic pressure tolerance remains largely unknown. We have recently demonstrated that Maintenance of telomere capping protein 6 (Mtc6) plays a protective role in the survival of the budding yeast Saccharomyces cerevisiae under hydrostatic pressure stress by supporting the integrity of nutrient permeases. The current study demonstrate that Mtc6 acts as an endoplasmic reticulum (ER) membrane protein. Mtc6 comprises two transmembrane domains, a C-terminal cytoplasmic domain, and a luminal region with 12 Asn (N)-linked glycans attached to it. Serial mutational analyses showed that the cytoplasmic C-terminal amino acid residues GVPS are essential for Mtc6 activity. Multiple N-linked glycans in the luminal region are involved in the structural conformation of Mtc6. Moreover, deletion of MTC6 led to increased degradation of the leucine permease Bap2 under hydrostatic pressure, suggesting that Mtc6 facilitates proper folding of nutrient permeases in the ER under the stress condition. We propose a novel model of molecular function in which the glycosylated luminal domain and cytoplasmic GVPS sequences of Mtc6 cooperatively support the nutrient permease activity.
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Affiliation(s)
- Satoshi Uemura
- Division of Medical Biochemistry, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, 983-8536 Sendai, Japan
| | - Takahiro Mochizuki
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 252-5258 Segamihara, Japan
| | - Yusuke Kato
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 252-5258 Segamihara, Japan
| | - Tetsuo Mioka
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 252-5258 Segamihara, Japan
| | - Riseko Watanabe
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 252-5258 Segamihara, Japan
| | - Mai Fuchita
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 252-5258 Segamihara, Japan
| | - Mao Yamada
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 252-5258 Segamihara, Japan
| | - Yoichi Noda
- Department of Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 113-8657 Bunkyo-ku, Japan
- Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, 113-8657 Bunkyo-ku, Japan
| | - Takashi Moriguchi
- Division of Medical Biochemistry, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, 983-8536 Sendai, Japan
| | - Fumiyoshi Abe
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 252-5258 Segamihara, Japan
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Nishimura M, Teo AR, Mochizuki T, Fujiwara N, Nakamura M, Yamashita D. Feasibility and perceptions of a benzodiazepine deprescribing quality improvement initiative for primary care providers in Japan. BMC Prim Care 2024; 25:35. [PMID: 38267882 PMCID: PMC10807085 DOI: 10.1186/s12875-024-02270-2] [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: 09/09/2023] [Accepted: 01/08/2024] [Indexed: 01/26/2024]
Abstract
BACKGROUND Quality improvement (QI) initiatives in primary care in Japan are rare. One crucial area for QI is the appropriate prescription of benzodiazepines due to the large and growing elderly population in the country. OBJECTIVE This study aimed to determine the feasibility and other perceptions of a Benzodiazepine receptor agonist medications (BZRAs) deprescribing QI initiative for primary care providers (PCPs) in Japanese primary care clinics. DESIGN A qualitative study within a QI initiative. PARTICIPANTS We recruited 11 semi-public clinics and 13 providers in Japan to participate in a BZRAs deprescribing initiative from 2020 to 2021. After stratifying the clinics according to size, we randomly allocated implementation clinics to either an Audit only or an Audit plus Coaching group. INTERVENTIONS For the Audit, we presented clinics with two BZRAs-related indicators. We provided monthly web-based meetings for the Coaching to support their QI activities. APPROACH After the nine-month initiative, we conducted semi-structured interviews and used content analysis to identify themes. We organized the themes and assessed the key factors of implementation using the Consolidated Framework for Implementation Research (CFIR) framework. KEY RESULTS Audit plus Coaching was perceived as more valuable than Audit only intervention. Participants expressed intellectual curiosity about the QI initiative from resources outside their clinic. However, adopting a team-based QI approach in a small clinic was perceived as challenging, and selecting the indicators was important for meaningful QI. CONCLUSION The small size of the clinic could be a potential barrier, but enhancing academic curiosity may facilitate QI initiatives in primary care in Japan. Further implementation trials are needed to evaluate the possibility of QI with more various indicators and a more extended period of time.
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Affiliation(s)
- Masahiro Nishimura
- Japan Association for Development of Community Medicine (JADECOM), 15th floor, 2-6-3 Hirakawa-cho, Chiyoda-ku, Tokyo, 102-0093, Japan.
| | - Alan R Teo
- Oregon Health and Science University (OHSU), Portland, United States
- VA Portland Health Care System, Portland, United States
| | - Takahiro Mochizuki
- Japan Association for Development of Community Medicine (JADECOM), 15th floor, 2-6-3 Hirakawa-cho, Chiyoda-ku, Tokyo, 102-0093, Japan
| | - Naoki Fujiwara
- Japan Association for Development of Community Medicine (JADECOM), 15th floor, 2-6-3 Hirakawa-cho, Chiyoda-ku, Tokyo, 102-0093, Japan
| | - Masakazu Nakamura
- Japan Association for Development of Community Medicine (JADECOM), 15th floor, 2-6-3 Hirakawa-cho, Chiyoda-ku, Tokyo, 102-0093, Japan
| | - Daisuke Yamashita
- Oregon Health and Science University (OHSU), Portland, United States
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Yamashita T, Matsubayashi Y, Mochizuki T. Traumatic tumor hemorrhage of inflammatory myofibroblastic tumor of the lung. Respir Med Case Rep 2024; 47:101981. [PMID: 38288137 PMCID: PMC10823134 DOI: 10.1016/j.rmcr.2024.101981] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 12/31/2023] [Accepted: 01/08/2024] [Indexed: 01/31/2024] Open
Abstract
A 23-year-old female with a history of idiopathic epilepsy was found to have a right chest cavity shadow in a school health checkup 5 years before. CT revealed a thin-walled cavity lesion in the right middle lobe containing a ball-like mass, showing air crescent sign. After falling due to a seizure, she was transported by ambulance and admitted. CT revealed diffuse ground-glass opacities throughout the right lung field. Bronchoscopy revealed bloody bronchial alveolar lavage fluid. Due to the tumor hemorrhage, an elective simple right middle lobe resection was performed without complications. The initial immunohistochemical staining was negative for ALK using ALK1 clone; however, subsequent staining of ALK by D5F3 and 5A4 clone was positive. Immunostaining findings led to a diagnosis of inflammatory myofibroblastic tumor. The patient remains under regular observation and has experienced no recurrence over the 6-year postoperative period. This case contains two different points: the first is that a cavity lesion of inflammatory myofibroblastic tumor may cause traumatic bleeding and should be treated with caution; the second is that attention should be paid to differences in stainability among clones when diagnosing inflammatory myofibroblastic tumor.
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Affiliation(s)
- Takashi Yamashita
- Department of Thoracic Surgery, Iwata City Hospital, 512-3, Ohkubo, Iwata, Shizuoka, 438-8550, Japan
| | - Yuta Matsubayashi
- Department of Thoracic Surgery, Iwata City Hospital, 512-3, Ohkubo, Iwata, Shizuoka, 438-8550, Japan
| | - Takahiro Mochizuki
- Department of Thoracic Surgery, Iwata City Hospital, 512-3, Ohkubo, Iwata, Shizuoka, 438-8550, Japan
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Mochizuki T, Tanigawa T, Shindo S, Suematsu M, Oguchi Y, Mioka T, Kato Y, Fujiyama M, Hatano E, Yamaguchi M, Chibana H, Abe F. Activation of CWI pathway through high hydrostatic pressure, enhancing glycerol efflux via the aquaglyceroporin Fps1 in Saccharomyces cerevisiae. Mol Biol Cell 2023; 34:ar92. [PMID: 37379203 PMCID: PMC10398897 DOI: 10.1091/mbc.e23-03-0086] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 05/26/2023] [Accepted: 06/22/2023] [Indexed: 06/30/2023] Open
Abstract
The fungal cell wall is the initial barrier for the fungi against diverse external stresses, such as osmolarity changes, harmful drugs, and mechanical injuries. This study explores the roles of osmoregulation and the cell-wall integrity (CWI) pathway in response to high hydrostatic pressure in the yeast Saccharomyces cerevisiae. We demonstrate the roles of the transmembrane mechanosensor Wsc1 and aquaglyceroporin Fps1 in a general mechanism to maintain cell growth under high-pressure regimes. The promotion of water influx into cells at 25 MPa, as evident by an increase in cell volume and a loss of the plasma membrane eisosome structure, activates the CWI pathway through the function of Wsc1. Phosphorylation of Slt2, the downstream mitogen-activated protein kinase, was increased at 25 MPa. Glycerol efflux increases via Fps1 phosphorylation, which is initiated by downstream components of the CWI pathway, and contributes to the reduction in intracellular osmolarity under high pressure. The elucidation of the mechanisms underlying adaptation to high pressure through the well-established CWI pathway could potentially translate to mammalian cells and provide novel insights into cellular mechanosensation.
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Affiliation(s)
- Takahiro Mochizuki
- Department of Chemistry and Biological Science, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - Toshiki Tanigawa
- Department of Chemistry and Biological Science, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - Seiya Shindo
- Department of Chemistry and Biological Science, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - Momoka Suematsu
- Department of Chemistry and Biological Science, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - Yuki Oguchi
- Center for Instrumental Analysis, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - Tetsuo Mioka
- Department of Chemistry and Biological Science, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - Yusuke Kato
- Department of Chemistry and Biological Science, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - Mina Fujiyama
- Department of Chemistry and Biological Science, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - Eri Hatano
- Department of Chemistry and Biological Science, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - Masashi Yamaguchi
- Medical Mycology Research Center, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8673, Japan
| | - Hiroji Chibana
- Medical Mycology Research Center, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8673, Japan
| | - Fumiyoshi Abe
- Department of Chemistry and Biological Science, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
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Nambu R, Arai K, Kudo T, Murakoshi T, Kunisaki R, Mizuochi T, Kato S, Kumagai H, Inoue M, Ishige T, Saito T, Noguchi A, Yodoshi T, Hagiwara SI, Iwata N, Nishimata S, Kakuta F, Tajiri H, Hiejima E, Toita N, Mochizuki T, Shimizu H, Iwama I, Hirano Y, Shimizu T. Clinical outcome of ulcerative colitis with severe onset in children: a multicenter prospective cohort study. J Gastroenterol 2023; 58:472-480. [PMID: 36884071 DOI: 10.1007/s00535-023-01972-1] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 02/14/2023] [Indexed: 03/09/2023]
Abstract
BACKGROUND As best practices for treating children with severe-onset ulcerative colitis remain controversial in the era of biologic agents, we prospectively investigated treatments and outcomes in a multicenter cohort. METHODS Using a Web-based data registry maintained in Japan between October 2012 and March 2020, we compared management and treatment outcomes in an S1 group defined by a Pediatric Ulcerative Colitis Activity Index of 65 or more points at diagnosis with those in an S0 group defined by an index value below 65. RESULTS Three hundred one children with ulcerative colitis treated at 21 institutions were included, with follow-up for 3.6 ± 1.9 years. Among them, 75 (25.0%) were in S1; their age at diagnosis was 12.3 ± 2.9 years, and 93% had pancolitis. Colectomy free rates in S1 were 89% after 1 year, 79% after 2, and 74% after 5, significantly lower than for S0 (P = 0.0003). Calcineurin inhibitors and biologic agents, respectively, were given to 53% and 56% of S1 patients, significantly more than for S0 patients (P < 0.0001). Among S1 patients treated with calcineurin inhibitors when steroids failed, 23% required neither biologic agents nor colectomy, similarly to the S0 group (P = 0.46). CONCLUSIONS Children with severe ulcerative colitis are likely to require powerful agents such as calcineurin inhibitors and biologic agents; sometimes colectomy ultimately proves necessary. Need for biologic agents in steroid-resistant patients might be reduced to an extent by interposing a therapeutic trial of CI rather than turning to biologic agents or colectomy immediately.
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Affiliation(s)
- Ryusuke Nambu
- Division of Gastroenterology and Hepatology, Saitama Children's Medical Center, 1-2 Shintoshin, Chuo-Ku, Saitama, 3308777, Japan.
| | - Katsuhiro Arai
- Center for Pediatric Inflammatory Bowel Disease, Division of Gastroenterology, National Center for Child Health and Development, Tokyo, Japan
| | - Takahiro Kudo
- Department of Pediatrics, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Takatsugu Murakoshi
- Department of Gastroenterology, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Reiko Kunisaki
- Inflammatory Bowel Disease Center, Yokohama City University Medical Center, Kanagawa, Japan
| | - Tatsuki Mizuochi
- Department of Pediatrics and Child Health, Kurume University School of Medicine, Fukuoka, Japan
| | - Sawako Kato
- Department of Pediatrics, Shinshu University School of Medicine, Nagano, Japan
| | - Hideki Kumagai
- Department of Pediatrics, Jichi Medical University, Tochigi, Japan
| | - Mikihiro Inoue
- Department of Pediatric Surgery, Fujita Health University, Aichi, Japan
| | - Takashi Ishige
- Department of Pediatrics, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Takeshi Saito
- Division of Pediatric Surgery, Chiba Children's Hospital, Chiba, Japan
| | - Atsuko Noguchi
- Department of Pediatrics, Akita University Graduate School of Medicine, Akita, Japan
| | | | - Shin-Ichiro Hagiwara
- Department of Gastroenterology, Nutrition and Endocrinology, Osaka Women's and Children's Hospital, Osaka, Japan
| | - Naomi Iwata
- Department of Infection and Immunology, Aichi Children's Health and Medical Center, Aichi, Japan
| | - Shigeo Nishimata
- Department of Pediatrics and Adolescent Medicine, Tokyo Medical University, Tokyo, Japan
| | - Fumihiko Kakuta
- Department of General Pediatrics and Gastroenterology, Miyagi Children's Hospital, Miyagi, Japan
| | - Hitoshi Tajiri
- Department of Pediatrics, Osaka General Medical Center, Osaka, Japan
| | - Eitaro Hiejima
- Department of Pediatrics, Kyoto University Hospital, Kyoto, Japan
| | - Nariaki Toita
- Department of Pediatrics, Sapporo Kosei General Hospital, Hokkaido, Japan
| | | | - Hirotaka Shimizu
- Center for Pediatric Inflammatory Bowel Disease, Division of Gastroenterology, National Center for Child Health and Development, Tokyo, Japan
| | - Itaru Iwama
- Division of Gastroenterology and Hepatology, Saitama Children's Medical Center, 1-2 Shintoshin, Chuo-Ku, Saitama, 3308777, Japan
| | - Yuri Hirano
- Center for Pediatric Inflammatory Bowel Disease, Division of Gastroenterology, National Center for Child Health and Development, Tokyo, Japan
| | - Toshiaki Shimizu
- Department of Pediatrics, Faculty of Medicine, Juntendo University, Tokyo, Japan
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Shimizu S, Miyake S, Mochizuki T, Koizumi H, Sekiguchi T, Kuroda H, Nakai Y, Kumabe T. Scratching and Stretching the Shrunken Cranial Dura for Primary Closure. World Neurosurg 2023; 172:5-8. [PMID: 36649854 DOI: 10.1016/j.wneu.2023.01.043] [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: 01/07/2023] [Revised: 01/10/2023] [Accepted: 01/11/2023] [Indexed: 01/15/2023]
Abstract
BACKGROUND At craniotomy, the dura shrinks due to the drying effect of illumination and air exposure, rendering its primary closure difficult. When the opening is narrow, it can be patched with autologous grafts. However, tissue harvesting and meticulous suturing take time. As the cost-effectiveness of using dural substitutes is poor, we developed a new technique that involves dural scratching for the primary closure of dural openings. METHODS We applied our technique because in 53 adults who underwent supratentorial craniotomy we encountered difficulties with the primary closure of a dural opening 5 mm or less in width. With a scalpel, we placed several fine scratches parallel to the edge of the opening on the surface of the dura, taking care not to perforate the deep layer. This relieved dural tension and the tissue was stretched enough to permit closing with sutures. RESULTS Our technique achieved primary dural closure in 46 of 53 patients (87%) who primarily had undergone narrow supratentorial craniotomies. The other 7 additionally required small autologous grafts to patch narrow residual openings at the intersection of the durotomy. There were no procedure-related complications such as cerebrospinal fluid leakage and persistent headache due to tension of the closed dura. CONCLUSIONS Dural scratching is simple, safe, requires no special instrumentation, facilitates primary closure of the shrunken dura by stretching, and reduces the need for patch grafting.
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Affiliation(s)
- Satoru Shimizu
- Department of Neurosurgery, Yokohama Brain and Spine Center, Yokohama, Kanagawa, Japan.
| | - Shigeta Miyake
- Department of Neurosurgery, Yokohama Brain and Spine Center, Yokohama, Kanagawa, Japan
| | - Takahiro Mochizuki
- Department of Neurosurgery, Yokohama Brain and Spine Center, Yokohama, Kanagawa, Japan
| | - Hiroyuki Koizumi
- Department of Neurosurgery, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Tomoko Sekiguchi
- Department of Neurosurgery, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Hiroki Kuroda
- Department of Neurosurgery, Yokohama Brain and Spine Center, Yokohama, Kanagawa, Japan
| | - Yasunobu Nakai
- Department of Neurosurgery, Yokohama Brain and Spine Center, Yokohama, Kanagawa, Japan
| | - Toshihiro Kumabe
- Department of Neurosurgery, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
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Mochizuki T, Yamashita D, Miura C, Nakamura M, Izumi S(S. Feasibility and acceptability of advance care planning facilitated by nonphysician clinicians in Japanese primary care: Implementation pilot study. J Gen Fam Med 2022; 24:30-37. [PMID: 36605916 PMCID: PMC9808147 DOI: 10.1002/jgf2.586] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 07/21/2022] [Accepted: 08/21/2022] [Indexed: 01/04/2023] Open
Abstract
Background Implementation of advance care planning (ACP) is urgently needed in Japan, which is one of the most aging countries. This study tested the feasibility and acceptability of ACP facilitated by nonphysician clinicians, and identified barriers and enablers to implementing ACP into Japanese primary care. Methods We trained 10 nonphysician clinicians (seven registered nurses, two medical social workers, and one care manager) in four primary care clinics as ACP facilitators. From April to June 2019, the trained facilitators had 19 ACP conversations with their patients. We conducted semistructured interviews and surveys regarding satisfaction and appropriateness of the ACP with patients, family members, ACP facilitators, and primary care physicians (PCPs) regarding their perceptions about ACP facilitated by nonphysician clinicians. Survey data were analyzed using descriptive statistics, and interviews were analyzed using a qualitative content analysis approach. Results Majority of patients (75%) and family members (71%) were satisfied with ACP facilitated by nonphysician clinicians. In 71%, ACP facilitators and PCPs thought their ACP facilitation was appropriate and acceptable. Patients stated that they felt comfortable having ACP conversations with nonphysician clinicians. Identified barriers and enablers for ACP included: time restraints, size and organization of the clinics, settings for ACP conversations (ACP at the patient's home), team collaboration, and use of existing system to trigger ACP. Conclusions Advance care planning facilitated by nonphysician clinicians was feasible and acceptable in Japanese primary care. Further studies are needed to explore strategies to overcome the barriers and enhance the enablers identified in this study.
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Affiliation(s)
- Takahiro Mochizuki
- Japan Association for Development of Community Medicine Practice‐Based Research NetworkTokyoJapan
| | - Daisuke Yamashita
- Department of Family MedicineOregon Health & Science UniversityPortlandOregonUSA
| | - Chikako Miura
- Japan Association for Development of Community Medicine Practice‐Based Research NetworkTokyoJapan
| | - Masakazu Nakamura
- Japan Association for Development of Community Medicine Practice‐Based Research NetworkTokyoJapan
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Ishii R, Fukui A, Sakihama Y, Kitsukawa S, Futami A, Mochizuki T, Nagano M, Toshima J, Abe F. Substrate-induced differential degradation and partitioning of the two tryptophan permeases Tat1 and Tat2 into eisosomes in Saccharomyces cerevisiae. Biochim Biophys Acta Biomembr 2022; 1864:183858. [PMID: 35031272 DOI: 10.1016/j.bbamem.2021.183858] [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] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 12/22/2021] [Accepted: 12/27/2021] [Indexed: 06/14/2023]
Abstract
Tryptophan is a relatively rare amino acid whose influx is strictly controlled to meet cellular demands. The yeast Saccharomyces cerevisiae has two tryptophan permeases, namely Tat1 (low-affinity type) and Tat2 (high-affinity type). These permeases are differentially regulated through ubiquitination based on inducible conditions and dependence on arrestin-related trafficking adaptors, although the physiological significance of their degradation remain unclear. Here, we demonstrated that Tat2 was rapidly degraded in an Rsp5-Bul1-dependent manner upon the addition of tryptophan, phenylalanine, or tyrosine, whereas Tat1 was unaffected. The expression of the ubiquitination-deficient variant Tat25K>R led to a reduction in cell yield at 4 μg/mL tryptophan, suggesting the occurrence of an uncontrolled, excessive consumption of tryptophan at low tryptophan concentrations. Eisosomes are membrane furrows that are thought to be storage compartments for some nutrient permeases. Tryptophan addition caused rapid Tat2 dissociation from eisosomes, whereas Tat1 distribution was unaffected. The 5 K > R mutation had no marked effect on Tat2 dissociation, suggesting that dissociation is independent of ubiquitination. Interestingly, the D74R mutation, which was created within the N-terminal acidic patch, stabilized Tat2 while reducing the degree of partitioning into eisosomes. Moreover, the hyperactive I285V mutation in Tat2, which increases Vmax/Km for tryptophan import by 2-fold, reduced the degree of segregation into eisosomes. Our findings illustrate the coordinated activity of Tat1 and Tat2 in the regulation of tryptophan transport at various tryptophan concentrations and suggest the positive role of substrates in inducing a conformational transition in Tat2, resulting in its dissociation from eisosomes and subsequent ubiquitination-dependent degradation.
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Affiliation(s)
- Ryoga Ishii
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - Ayu Fukui
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - Yuri Sakihama
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - Shoko Kitsukawa
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - Ayami Futami
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - Takahiro Mochizuki
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan; Division of Medical Biochemistry, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, 1-15-1, Fukumuro, Miyagino-ku, Sendai, Miyagi 983-8536, Japan
| | - Makoto Nagano
- Department of Biological Science and Technology, Tokyo University of Science, 6-3-1 Niijyuku, Katsushika-ku, Tokyo 125-8585, Japan
| | - Jiro Toshima
- Department of Biological Science and Technology, Tokyo University of Science, 6-3-1 Niijyuku, Katsushika-ku, Tokyo 125-8585, Japan
| | - Fumiyoshi Abe
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan.
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Tanaka T, Soneda S, Sato N, Kishi K, Noda M, Ogasawara A, Nose O, Nakano Y, Kinoshita E, Mochizuki T, Konda S, Murashita M, Tanizawa T, Nozue H, Tokuda M, Kubota K, Araki K, Kitanaka S, Inomata H, Miyagi C, Ishizu K, Miyagawa S. The Boy:Girl Ratio of Children Diagnosed with Growth Hormone Deficiency-Induced Short Stature Is Associated with the Boy:Girl Ratio of Children Visiting Short Stature Clinics. Horm Res Paediatr 2022; 94:211-218. [PMID: 34425577 DOI: 10.1159/000518995] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 08/04/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND About twice as many boys as girls undergo growth hormone (GH) therapy in GH deficiency (GHD). However, this sex difference may not correctly reflect a real incidence. OBJECTIVES We analyzed the evidence of a selection bias whereby more boys seek treatment at short stature clinics. SUBJECTS AND METHODS The present study included 3,902 children who visited 17 short stature clinics with a height SD score of -2 SD or less. The percentage of children who underwent the GH stimulation test was compared between boys and girls, as was the percentage of children ultimately diagnosed with GHD. RESULTS The children comprised 2,390 boys (61.3%) and 1,512 girls (38.7%), with a boy:girl ratio of 1.58:1. The percentage of children who underwent the GH stimulation test did not differ between boys (45.7%) and girls (49.8%). Among the children who underwent the GH stimulation test, the percentage diagnosed with GHD did not differ significantly between boys (22.0%) and girls (20.1%). The boy:girl ratio of children diagnosed with GHD was 1.59:1. CONCLUSIONS The boy:girl ratio of children with short stature (1.58:1) did not differ significantly from that of children diagnosed with GHD (1.59:1). These results indicate that the predominance of boys in GHD does not reflect a real incidence, but rather a selection bias whereby a higher proportion of boys with short stature seek treatment at clinics. This difference arises because parents are more concerned about boys' height, and because boys reach adult height at an older age.
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Affiliation(s)
| | | | - Naoko Sato
- Tanaka Growth Clinic, Setagaya, Japan.,Onami Clinic, Higashikurume, Japan
| | - Kentaro Kishi
- Tanaka Growth Clinic, Setagaya, Japan.,Tachibanadai Clinic, Yokohama, Japan
| | - Masahiro Noda
- Tanaka Growth Clinic, Setagaya, Japan.,Department of Pediatrics, Showa General Hospital, Kodaira, Japan
| | - Atsuko Ogasawara
- Tanaka Growth Clinic, Setagaya, Japan.,Ibaraki Children's Hospital, Mito, Japan
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10
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Shimizu S, Mochizuki T, Koizumi H, Kuroda H, Miyake S, Nakai Y, Kumabe T. Using a Carpenter’s Square to Localize Narrow or Multilayered Chronic Subdural Hematomas Diagnosed on Computed Tomographs: Doing More with Less. World Neurosurg 2022; 161:16-20. [DOI: 10.1016/j.wneu.2022.01.121] [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] [Received: 12/04/2021] [Revised: 01/29/2022] [Accepted: 01/31/2022] [Indexed: 10/19/2022]
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11
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Shimizu S, Mochizuki T, Inukai M, Osawa S, Kuroda H, Amari K, Nakai Y, Kumabe T. Aneurysms Arising from Persistent Arteries in the Vertebrobasilar Paramedian Longitudinal Axis: Two Case Reports. NMC Case Rep J 2022; 8:665-671. [PMID: 35079532 PMCID: PMC8769483 DOI: 10.2176/nmccrj.cr.2021-0129] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 06/28/2021] [Indexed: 12/03/2022] Open
Abstract
A 50-year-old man and a 69-year-old woman with consciousness disturbance were diagnosed to have suffered from subarachnoid hemorrhage (SAH) involving the posterior fossa. In both cases, the initial 3D CT angiogram failed to reveal the SAH source in the vertebrobasilar system. Delayed 3D rotational angiography revealed aneurysms on unfamiliar aberrant arteries. One was a dissecting aneurysm located between the proximal part of the posterior inferior cerebellar artery and the distal part of the intracranial vertebral artery. It was trapped and resected; the patient subsequently presented with lateral medullary symptoms. The other aneurysm was between the distal posterior and the distal anterior inferior cerebellar artery. It was successfully embolized; there were no complications. We think that the aberrant aneurysm-harboring vessels encountered in these two patients were primitive arteries on or adjacent to the vertebrobasilar paramedian longitudinal axis and that they persisted past the embryologic stage. Such aneurysms arising from unfamiliar persistent arteries beside the brainstem are extremely rare but must be considered when the SAH source is not detected in the trunk of the vertebrobasilar system.
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Affiliation(s)
- Satoru Shimizu
- Department of Neurosurgery, Yokohama Brain and Spine Center, Yokohama, Kanagawa, Japan
| | - Takahiro Mochizuki
- Department of Neurosurgery, Yokohama Brain and Spine Center, Yokohama, Kanagawa, Japan
| | - Madoka Inukai
- Department of Neurosurgery, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Shigeyuki Osawa
- Department of Neurosurgery, Yokohama Brain and Spine Center, Yokohama, Kanagawa, Japan
| | - Hiroki Kuroda
- Department of Neurosurgery, Yokohama Brain and Spine Center, Yokohama, Kanagawa, Japan
| | - Kazumitsu Amari
- Department of Neurosurgery, Yokohama Brain and Spine Center, Yokohama, Kanagawa, Japan
| | - Yasunobu Nakai
- Department of Neurosurgery, Yokohama Brain and Spine Center, Yokohama, Kanagawa, Japan
| | - Toshihiro Kumabe
- Department of Neurosurgery, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
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12
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Yamaguchi R, Guo X, Zheng J, Zhang J, Han J, Shioya A, Uramoto H, Mochizuki T, Shimizu A, Yamada S. 346 Peroxiredoxin 4 improved aging-related delayed wound healing in mice. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.355] [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: 10/20/2022]
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13
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Ohba A, Nakano T, Onoda S, Mochizuki T, Nakamoto K, Hotaka H. Laboratory-size x-ray microscope using Wolter mirror optics and an electron-impact x-ray source. Rev Sci Instrum 2021; 92:093704. [PMID: 34598496 DOI: 10.1063/5.0059906] [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] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 09/06/2021] [Indexed: 06/13/2023]
Abstract
We developed a laboratory-size three-dimensional water-window x-ray microscope using condenser and objective grazing incidence Wolter type I mirrors, an electron-impact-type x-ray source, and a back-illuminated CCD. The imaging system was improved for practical applications in life science research fields. Using a new objective mirror with reduced figure errors, a resolution limit of 3.1 line pairs/μm was achieved for two-dimensional transmission images and sub-micrometer-scale three-dimensional structures were resolved. Incorporating a cryogenic stage into the x-ray microscope, we observed biological samples embedded in ice to evaluate the usefulness of observation in the water-window region and multi-energy observation was demonstrated using an x-ray source with multiple x-ray tubes.
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Affiliation(s)
- Akira Ohba
- Hamamatsu Photonics K.K., 5000 Hirakuchi Hamakita-ku, Hamamatsu City 434-8601, Japan
| | - Tomoyasu Nakano
- Hamamatsu Photonics K.K., 5000 Hirakuchi Hamakita-ku, Hamamatsu City 434-8601, Japan
| | - Shinobu Onoda
- Hamamatsu Photonics K.K., 5000 Hirakuchi Hamakita-ku, Hamamatsu City 434-8601, Japan
| | - Takahiro Mochizuki
- Hamamatsu Photonics K.K., 5000 Hirakuchi Hamakita-ku, Hamamatsu City 434-8601, Japan
| | - Katsuhiro Nakamoto
- Hamamatsu Photonics K.K., 5000 Hirakuchi Hamakita-ku, Hamamatsu City 434-8601, Japan
| | - Hisaya Hotaka
- Hamamatsu Photonics K.K., 5000 Hirakuchi Hamakita-ku, Hamamatsu City 434-8601, Japan
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14
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Shimura H, Manita S, Mochizuki T, Matsuda Y, Ihara T, Kira S, Mitsui T, Kitamura K, Takeda M. Therapeutic potential of cell-type selective optogenetics for a mouse model with urinary frequency. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00406-1] [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: 11/26/2022]
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15
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Shimizu S, Mochizuki T, Kuroda H, Osawa S, Tanaka O, Nemoto M, Kumabe T. [Anterior Interosseous Nerve Palsy with Isolated Flexion Palsy of the Thumb or Index Finger as an Initial Symptom:Two Case Reports]. No Shinkei Geka 2021; 49:452-457. [PMID: 33762472 DOI: 10.11477/mf.1436204413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Case 1: A 73-year-old man who had undergone neurolysis for right cubital tunnel syndrome complained of difficulty using chopsticks. Froment's sign test showed that the interphalangeal(IP)joint of the right thumb that had flexed preoperatively was extended. This finding was considered to indicate recovery from ulnar neuropathy, and the patient was closely followed up. One year later, the patient was unable to push a camera shutter button and was unable to flex the IP joint of the thumb and the distal interphalangeal(DIP)joint of the index finger, a characteristic symptom of anterior interosseous nerve(AIN)palsy. Therefore, the patient underwent AIN neurolysis and subsequently reported slight improvement in his condition. Case 2: A 60-year-old woman reported difficulty performing computer mouse clicks with her right hand. As flexing the index finger DIP joint was difficult, a local lesion was suspected, and the patient was closely followed up. One year later, the patient was unable to push the button of a ballpoint pen with her thumb. Extension of the thumb and index finger indicated AIN palsy. The patient refused treatment and was only followed up. The following year, the patient reported that the weakness improved. Simultaneous flexion palsy of the thumb and index finger can lead to a diagnosis of AIN palsy. However, flexion palsy of a single finger in incomplete AIN palsy, as reported here, is often overlooked because of its similarity to the flexor tendon rupture. Awareness regarding this incomplete form of AIN palsy is needed for early and correct diagnosis.
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Affiliation(s)
- Satoru Shimizu
- Department of Neurosurgery, Yokohama Brain and Spine Center
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16
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Kakubari S, Sakaida K, Asano M, Aramaki Y, Ito H, Yasui A, Iwamaru K, Kaneda T, Kitamura M, Matsumoto T, Miyamoto M, Mizuta K, Mochizuki T, Morioka M, Namura H, Yamoto R. Determination of Lycopene Concentration in Fresh Tomatoes by Spectrophotometry: A Collaborative Study. J AOAC Int 2020; 103:1619-1624. [PMID: 33112388 DOI: 10.1093/jaoacint/qsaa050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 03/31/2020] [Accepted: 04/02/2020] [Indexed: 11/13/2022]
Abstract
BACKGROUND Lycopene has been the object of considerable research attention recently, and the effects of the intake of lycopene, or of tomato products, have been studied in various ways. In Japan, interest in the health-promoting function of food components has increased. OBJECTIVE Developing a method to determine lycopene contents in tomato that meets the Japanese Agricultural Standard (JAS). METHOD In the proposed JAS method, the test sample consists of fresh tomatoes; a hexane-acetone mixture is utilized as the extraction solvent. A collaborative study was conducted to evaluate the interlaboratory performance of the method. RESULTS Ten laboratories participated and analyzed six test materials characterized by a lycopene content between 39 and 170 mg/kg as blind duplicates. After removing statistical outliers, RSDr ranged from 1.2 to 3.0% and RSDR ranged from 2.4 to 4.2%. The HorRat values were calculated and found to be in the 0.26-0.49 range. CONCLUSIONS The method for determining the lycopene content in tomato was evaluated by means of a collaborative study, and the reproducibility of this method was found to be acceptable. HIGHLIGHTS Intended for standardization in Japan, a method to determine lycopene content in tomato has been developed and shown to have acceptable precision in a collaborative study.
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Affiliation(s)
- Sachiko Kakubari
- Food and Agricultural Materials Inspection Center, 2-1 Shintoshin, Chuo-ku, Saitama 330-9731, Japan
| | - Kenichi Sakaida
- Food and Agricultural Materials Inspection Center, 2-1 Shintoshin, Chuo-ku, Saitama 330-9731, Japan
| | - Masahiro Asano
- Food and Agricultural Materials Inspection Center, 2-1 Shintoshin, Chuo-ku, Saitama 330-9731, Japan
| | - Yoshinori Aramaki
- Kagome Co., Ltd, 17 Nishitomiyama, Nasushiobara, Tochigi 329-2762, Japan
| | - Hidekazu Ito
- Food Research Institute, National Agriculture and Food Research Organization, 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8642, Japan
| | - Akemi Yasui
- Food Research Institute, National Agriculture and Food Research Organization, 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8642, Japan
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17
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Makita K, Hamamoto Y, Mochizuki T. The Important Factor in Local Control of Bone Metastatic Lesions in Radiotherapy. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1397] [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: 10/23/2022]
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18
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Uemura S, Mochizuki T, Amemiya K, Kurosaka G, Yazawa M, Nakamoto K, Ishikawa Y, Izawa S, Abe F. Amino acid homeostatic control by TORC1 in Saccharomyces cerevisiae under high hydrostatic pressure. J Cell Sci 2020; 133:jcs245555. [PMID: 32801125 DOI: 10.1242/jcs.245555] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 03/24/2020] [Accepted: 08/05/2020] [Indexed: 12/30/2022] Open
Abstract
Mechanical stresses, including high hydrostatic pressure, elicit diverse physiological effects on organisms. Gtr1, Gtr2, Ego1 (also known as Meh1) and Ego3 (also known as Slm4), central regulators of the TOR complex 1 (TORC1) nutrient signaling pathway, are required for the growth of Saccharomyces cerevisiae cells under high pressure. Here, we showed that a pressure of 25 MPa (∼250 kg/cm2) stimulates TORC1 to promote phosphorylation of Sch9, which depends on the EGO complex (EGOC) and Pib2. Incubation of cells at this pressure aberrantly increased glutamine and alanine levels in the ego1Δ, gtr1Δ, tor1Δ and pib2Δ mutants, whereas the polysome profiles were unaffected. Moreover, we found that glutamine levels were reduced by combined deletions of EGO1, GTR1, TOR1 and PIB2 with GLN3 These results suggest that high pressure leads to the intracellular accumulation of amino acids. Subsequently, Pib2 loaded with glutamine stimulates the EGOC-TORC1 complex to inactivate Gln3, downregulating glutamine synthesis. Our findings illustrate the regulatory circuit that maintains intracellular amino acid homeostasis and suggest critical roles for the EGOC-TORC1 and Pib2-TORC1 complexes in the growth of yeast under high hydrostatic pressure.
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Affiliation(s)
- Satoshi Uemura
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
- Division of Medical Biochemistry, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, 1-15-1, Fukumuro, Miyagino-ku, Sendai, Miyagi 983-8536, Japan
| | - Takahiro Mochizuki
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - Kengo Amemiya
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - Goyu Kurosaka
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - Miho Yazawa
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - Keiko Nakamoto
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - Yu Ishikawa
- Laboratory of Microbial Technology, Department of Applied Biology, Graduate School of Science and Technology, Kyoto Institute of Technology, Kyoto 606-8585, Japan
| | - Shingo Izawa
- Laboratory of Microbial Technology, Department of Applied Biology, Graduate School of Science and Technology, Kyoto Institute of Technology, Kyoto 606-8585, Japan
| | - Fumiyoshi Abe
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
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19
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Arai K, Kunisaki R, Kakuta F, Hagiwara SI, Murakoshi T, Yanagi T, Shimizu T, Kato S, Ishige T, Aomatsu T, Inoue M, Saito T, Iwama I, Kawashima H, Kumagai H, Tajiri H, Iwata N, Mochizuki T, Noguchi A, Kashiwabara T, Shimizu H, Suzuki Y, Hirano Y, Fujiwara T. Phenotypic characteristics of pediatric inflammatory bowel disease in Japan: results from a multicenter registry. Intest Res 2020; 18:412-420. [PMID: 32806870 PMCID: PMC7609396 DOI: 10.5217/ir.2019.00130] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 05/17/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND/AIMS There are few published registry studies from Asia on pediatric inflammatory bowel disease (IBD). Registry network data enable comparisons among ethnic groups. This study examined the characteristics of IBD in Japanese children and compared them with those in European children. METHODS This was a cross-sectional multicenter registry study of newly diagnosed Japanese pediatric IBD patients. The Paris classification was used to categorize IBD features, and results were compared with published EUROKIDS data. RESULTS A total of 265 pediatric IBD patients were initially registered, with 22 later excluded for having incomplete demographic data. For the analysis, 91 Crohn's disease (CD), 146 ulcerative colitis (UC), and 6 IBD-unclassified cases were eligible. For age at diagnosis, 20.9% of CD, 21.9% of UC, and 83.3% of IBD-unclassified cases were diagnosed before age 10 years. For CD location, 18.7%, 13.2%, 64.8%, 47.3%, and 20.9% were classified as involving L1 (ileocecum), L2 (colon), L3 (ileocolon), L4a (esophagus/stomach/duodenum), and L4b (jejunum/proximal ileum), respectively. For UC extent, 76% were classified as E4 (pancolitis). For CD behavior, B1 (non-stricturing/non-penetrating), B2 (stricturing), B3 (penetrating), and B2B3 were seen in 83.5%, 11.0%, 3.3%, and 2.2%, respectively. A comparison between Japanese and European children showed less L2 involvement (13.2% vs. 27.3%, P< 0.01) but more L4a (47.3% vs. 29.6%, P< 0.01) and L3 (64.8% vs. 52.7%, P< 0.05) involvement in Japanese CD children. Pediatric perianal CD was more prevalent in Japanese children (34.1% vs. 9.7%, P< 0.01). CONCLUSIONS Upper gastrointestinal and perianal CD lesions are more common in Japanese children than in European children.
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Affiliation(s)
- Katsuhiro Arai
- Division of Gastroenterology, National Center for Child Health and Development, Setagaya, Japan
| | - Reiko Kunisaki
- Inflammatory Bowel Disease Center, Yokohama City University Medical Center, Yokohama, Japan
| | - Fumihiko Kakuta
- Department of General Pediatrics and Gastroenterology, Miyagi Children's Hospital, Sendai, Japan
| | - Shin-Ichiro Hagiwara
- Division of Gastroenterology and Hepatology, Saitama Children's Medical Center, Saitama, Japan
| | - Takatsugu Murakoshi
- Department of Gastroenterology, Tokyo Metropolitan Children's Medical Center, Fuchu, Japan
| | - Tadahiro Yanagi
- Department of Pediatrics and Child Health, Kurume University School of Medicine, Kurume, Japan
| | - Toshiaki Shimizu
- Department of Pediatric and Adolescent Medicine, Juntendo University Graduate School of Medicine, Bunkyo, Japan
| | - Sawako Kato
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - Takashi Ishige
- Department of Pediatrics, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Tomoki Aomatsu
- Department of Pediatrics, Osaka Medical College, Takatsuki, Japan
| | - Mikihiro Inoue
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Japan
| | - Takeshi Saito
- Department of Pediatric Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Itaru Iwama
- Department of Pediatrics, Okinawa Prefectural Chubu Hospital, Okinawa, Japan
| | | | - Hideki Kumagai
- Department of Pediatrics, Jichi Medical University, Shimotsuke, Japan
| | - Hitoshi Tajiri
- Department of Pediatrics, Osaka General Medical Center, Osaka, Japan
| | - Naomi Iwata
- Division of Infectious Disease and Immunology, Aichi Children's Health and Medical Center, Obu, Japan
| | | | - Atsuko Noguchi
- Department of Pediatrics, Akita University Graduate School of Medicine, Akita, Japan
| | - Toshihiko Kashiwabara
- Department of Gastroenterology, Yamagata Prefectural Central Hospital, Yamagata, Japan
| | - Hirotaka Shimizu
- Division of Gastroenterology, National Center for Child Health and Development, Setagaya, Japan
| | - Yasuo Suzuki
- Inflammatory Bowel Disease Center, Toho University Sakura Medical Center, Sakura, Japan
| | - Yuri Hirano
- Division of Gastroenterology, National Center for Child Health and Development, Setagaya, Japan
| | - Takeo Fujiwara
- Department of Global Health Promotion, Tokyo Medical and Dental University, Bunkyo, Japan
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20
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Dobriyal N, Sagarika P, Shrivastava A, Verma AK, Islam Z, Gupta P, Mochizuki T, Abe F, Sahi C. Over-expression of Caj1, a plasma membrane associated J-domain protein in Saccharomyces cerevisiae, stabilizes amino acid permeases. Biochim Biophys Acta Biomembr 2020; 1862:183435. [PMID: 32777224 DOI: 10.1016/j.bbamem.2020.183435] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 07/08/2020] [Accepted: 07/27/2020] [Indexed: 11/17/2022]
Abstract
Hsp70: J-domain protein (JDP) machines, along with the cellular protein degradation systems play a central role in regulating cellular proteostasis. An equally robust surveillance system operates at the plasma membrane too that affects proper sorting, stability as well as the turnover of membrane proteins. Although plausible, a definitive role of the Hsp70: JDP machine in regulating the stability of plasma membrane proteins is not well understood in Saccharomyces cerevisiae. Here we show that a moderate over-expression of Caj1, one of the thirteen JDPs residing in the nucleo-cytosolic compartment of S. cerevisiae reduced the cold sensitivity of tryptophan auxotrophic yeast cells by stabilizing tryptophan permeases, Tat1 and Tat2 in a J-domain dependent manner. Concomitantly, higher Caj1 levels also caused slow growth and increased plasma membrane damage at elevated temperatures possibly due to the stabilization of thermolabile plasma membrane proteins. Finally, we show that although majorly cytosolic, Caj1 also co-localizes with the membrane dye FM4-64 at the cellular periphery suggesting that Caj1 might interact with the plasma membrane. Based on the results presented in this study, we implicate the Hsp70: Caj1 chaperone machine in regulating the stability or turnover of plasma membrane proteins in budding yeast.
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Affiliation(s)
- N Dobriyal
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Madhya Pradesh, India
| | - P Sagarika
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Madhya Pradesh, India
| | - A Shrivastava
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Madhya Pradesh, India
| | - A K Verma
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Madhya Pradesh, India
| | - Z Islam
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Madhya Pradesh, India
| | - P Gupta
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Madhya Pradesh, India
| | - T Mochizuki
- Molecular Genetic Research, Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - F Abe
- Molecular Genetic Research, Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Japan
| | - C Sahi
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Madhya Pradesh, India.
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21
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Sako M, Ishii T, Okada K, Mochizuki T, Hara J, Kudo K, Imashuku S. [Successful unrelated cord blood transplantation for extensive meningeal juvenile xanthogranuloma developing after treatment of Langerhans cell histiocytosis in a child]. Rinsho Ketsueki 2020; 61:468-473. [PMID: 32507810 DOI: 10.11406/rinketsu.61.468] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A 2-year and 4-month-old boy developed Langerhans cell histiocytosis (LCH) at the left parietal region of the skull. After treatment with chemotherapy, the patient achieved remission but experienced three relapses. After 3 years, he complained of headache, blurred vision, and lethargy. Brain magnetic resonance imaging revealed multiple dura-based meningeal masses. Biopsy was performed, and the patient was then diagnosed with juvenile xanthogranuloma (JXG). The analysis of both LCH/JXG tissues revealed BRAF V600E mutation. The JXG masses were not responsive to prednisolone, which was injected locally, radiotherapy (24 Gy), and chemotherapy (2-chlorodeoxy-adenosine). In addition, since the patient developed macrophage activation syndrome associated with systemic JXG progression, he received unrelated cord blood transplantation (u-CBT) at the age of 10 years and 11 months. Engraftment was performed at day 42, and significant GVHD was not observed. Four months after CBT, the patient was treated with infliximab (Remicade®) and dexamethasone palmitate (Limethasone®). The size of the intracranial JXG masses gradually decreased after u-CBT and disappeared after 4 years. Currently, the patient is doing well at the age of 25 years and is receiving androgen replacement therapy.
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Affiliation(s)
- Masahiro Sako
- The First Hospital of Welfare-Medical Association.,Department of Pediatric Hematology and Oncology, Osaka City General Hospital
| | - Takefumi Ishii
- Ishii Children's Clinic.,Department of Pediatric Hematology and Oncology, Osaka City General Hospital
| | - Keiko Okada
- Department of Pediatric Hematology and Oncology, Osaka City General Hospital
| | | | - Junichi Hara
- Department of Pediatric Hematology and Oncology, Osaka City General Hospital
| | - Ko Kudo
- Department of Pediatrics, Hirosaki University Graduate School of Medicine
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22
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Smith DM, Scaife AA, Eade R, Athanasiadis P, Bellucci A, Bethke I, Bilbao R, Borchert LF, Caron LP, Counillon F, Danabasoglu G, Delworth T, Doblas-Reyes FJ, Dunstone NJ, Estella-Perez V, Flavoni S, Hermanson L, Keenlyside N, Kharin V, Kimoto M, Merryfield WJ, Mignot J, Mochizuki T, Modali K, Monerie PA, Müller WA, Nicolí D, Ortega P, Pankatz K, Pohlmann H, Robson J, Ruggieri P, Sospedra-Alfonso R, Swingedouw D, Wang Y, Wild S, Yeager S, Yang X, Zhang L. North Atlantic climate far more predictable than models imply. Nature 2020; 583:796-800. [PMID: 32728237 DOI: 10.1038/s41586-020-2525-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 05/01/2020] [Indexed: 11/09/2022]
Abstract
Quantifying signals and uncertainties in climate models is essential for the detection, attribution, prediction and projection of climate change1-3. Although inter-model agreement is high for large-scale temperature signals, dynamical changes in atmospheric circulation are very uncertain4. This leads to low confidence in regional projections, especially for precipitation, over the coming decades5,6. The chaotic nature of the climate system7-9 may also mean that signal uncertainties are largely irreducible. However, climate projections are difficult to verify until further observations become available. Here we assess retrospective climate model predictions of the past six decades and show that decadal variations in North Atlantic winter climate are highly predictable, despite a lack of agreement between individual model simulations and the poor predictive ability of raw model outputs. Crucially, current models underestimate the predictable signal (the predictable fraction of the total variability) of the North Atlantic Oscillation (the leading mode of variability in North Atlantic atmospheric circulation) by an order of magnitude. Consequently, compared to perfect models, 100 times as many ensemble members are needed in current models to extract this signal, and its effects on the climate are underestimated relative to other factors. To address these limitations, we implement a two-stage post-processing technique. We first adjust the variance of the ensemble-mean North Atlantic Oscillation forecast to match the observed variance of the predictable signal. We then select and use only the ensemble members with a North Atlantic Oscillation sufficiently close to the variance-adjusted ensemble-mean forecast North Atlantic Oscillation. This approach greatly improves decadal predictions of winter climate for Europe and eastern North America. Predictions of Atlantic multidecadal variability are also improved, suggesting that the North Atlantic Oscillation is not driven solely by Atlantic multidecadal variability. Our results highlight the need to understand why the signal-to-noise ratio is too small in current climate models10, and the extent to which correcting this model error would reduce uncertainties in regional climate change projections on timescales beyond a decade.
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Affiliation(s)
- D M Smith
- Met Office Hadley Centre, Exeter, UK.
| | - A A Scaife
- Met Office Hadley Centre, Exeter, UK.,College of Engineering, Mathematics and Physical Sciences, Exeter University, Exeter, UK
| | - R Eade
- Met Office Hadley Centre, Exeter, UK
| | - P Athanasiadis
- Centro Euro-Mediterraneo sui Cambiamenti Climatici, Bologna, Italy
| | - A Bellucci
- Centro Euro-Mediterraneo sui Cambiamenti Climatici, Bologna, Italy
| | - I Bethke
- Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway
| | - R Bilbao
- Barcelona Supercomputing Center, Barcelona, Spain
| | - L F Borchert
- Sorbonne Universités, LOCEAN Laboratory, Institut Pierre Simon Laplace (IPSL), Paris, France
| | - L-P Caron
- Barcelona Supercomputing Center, Barcelona, Spain
| | - F Counillon
- Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway.,Nansen Environmental and Remote Sensing Center and Bjerknes Centre for Climate Research, Bergen, Norway
| | - G Danabasoglu
- National Center for Atmospheric Research, Boulder, CO, USA
| | - T Delworth
- Geophysical Fluid Dynamics Laboratory, Princeton University, Princeton, NJ, USA
| | - F J Doblas-Reyes
- Barcelona Supercomputing Center, Barcelona, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
| | | | - V Estella-Perez
- Sorbonne Universités, LOCEAN Laboratory, Institut Pierre Simon Laplace (IPSL), Paris, France
| | - S Flavoni
- Sorbonne Universités, LOCEAN Laboratory, Institut Pierre Simon Laplace (IPSL), Paris, France
| | | | - N Keenlyside
- Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway.,Nansen Environmental and Remote Sensing Center and Bjerknes Centre for Climate Research, Bergen, Norway
| | - V Kharin
- Canadian Centre for Climate Modelling and Analysis, Environment and Climate Change Canada, Victoria, British Columbia, Canada
| | - M Kimoto
- Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwa, Japan
| | - W J Merryfield
- Canadian Centre for Climate Modelling and Analysis, Environment and Climate Change Canada, Victoria, British Columbia, Canada
| | - J Mignot
- Sorbonne Universités, LOCEAN Laboratory, Institut Pierre Simon Laplace (IPSL), Paris, France
| | - T Mochizuki
- Department of Earth and Planetary Sciences, Kyushu University, Fukuoka, Japan.,Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan
| | - K Modali
- Max-Planck-Institut für Meteorologie, Hamburg, Germany.,Regional Computing Center, University of Hamburg, Hamburg, Germany
| | - P-A Monerie
- National Centre for Atmospheric Science, Department of Meteorology, University of Reading, Reading, UK
| | - W A Müller
- Max-Planck-Institut für Meteorologie, Hamburg, Germany
| | - D Nicolí
- Centro Euro-Mediterraneo sui Cambiamenti Climatici, Bologna, Italy
| | - P Ortega
- Barcelona Supercomputing Center, Barcelona, Spain
| | - K Pankatz
- Deutscher Wetterdienst, Hamburg, Germany
| | - H Pohlmann
- Max-Planck-Institut für Meteorologie, Hamburg, Germany.,Deutscher Wetterdienst, Hamburg, Germany
| | - J Robson
- National Centre for Atmospheric Science, Department of Meteorology, University of Reading, Reading, UK
| | - P Ruggieri
- Centro Euro-Mediterraneo sui Cambiamenti Climatici, Bologna, Italy
| | - R Sospedra-Alfonso
- Canadian Centre for Climate Modelling and Analysis, Environment and Climate Change Canada, Victoria, British Columbia, Canada
| | - D Swingedouw
- CNRS-EPOC, Université de Bordeaux, Pessac, France
| | - Y Wang
- Nansen Environmental and Remote Sensing Center and Bjerknes Centre for Climate Research, Bergen, Norway
| | - S Wild
- Barcelona Supercomputing Center, Barcelona, Spain
| | - S Yeager
- National Center for Atmospheric Research, Boulder, CO, USA
| | - X Yang
- Geophysical Fluid Dynamics Laboratory, Princeton University, Princeton, NJ, USA
| | - L Zhang
- Geophysical Fluid Dynamics Laboratory, Princeton University, Princeton, NJ, USA
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23
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Shimizu S, Mochizuki T, Kuroda H, Nemoto M, Kumabe T. [Lymphorrhea at the Site of Repeated Fascia Lata Harvesting:A Case Report]. No Shinkei Geka 2020; 48:621-625. [PMID: 32694232 DOI: 10.11477/mf.1436204241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This 74-year-old man had undergone a third re-operation for anaplastic meningioma in the convexity six weeks before he was referred to us. He presented with a bulge on the lateral aspect of the left thigh. We observed a fresh fascia lata harvesting scar that extended peripherally from an old proximal scar. The bulge was colorless. The aspirated subcutaneous fluid(more than 200mL)was watery and yellowish;there was no evidence of abscess or hematoma. Although the bulge shrank after aspiration and the placement of a compression bandage, it recurred in three days. Surgery-associated lymphorrhea was the diagnosis given. Goreisan, a herbal medicine for hydrostatic modulation, was administered. One week later, the bulge diminished in size. Harvesting of the fascia lata in the lateral aspect of the thigh is usually safe. However, additional dissection and peripheral extension due to repeated harvesting risks damaging the superficial lymphatic pathways because of scar formation after earlier surgeries and the hyperdense distribution of the lymphatic pathways in the peripheral part. When subcutaneous fluid collection after fascia lata harvesting is refractory, lymphorrhea must be considered in the differential diagnosis.
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Affiliation(s)
- Satoru Shimizu
- Department of Neurosurgery, Yokohama Brain and Spine Center
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24
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Abe T, Minami K, Harabayashi T, Sazawa A, Chiba H, Kikuchi H, Miyata H, Matsumoto R, Osawa T, Maruyama S, IshizakiIshizaki J, Mochizuki T, Chiba S, Akino T, Murakumo M, Miyajima N, Tsuchiya K, Murai S, Shinohara N. Erratum to: Outcome of maintenance systemic chemotherapy with drug-free interval for metastatic urothelial carcinoma. Jpn J Clin Oncol 2020; 50:726. [PMID: 32382760 PMCID: PMC7284546 DOI: 10.1093/jjco/hyz196] [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] [Received: 03/18/2019] [Revised: 05/15/2019] [Accepted: 05/21/2019] [Indexed: 11/21/2022] Open
Affiliation(s)
- T Abe
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
| | - K Minami
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - T Harabayashi
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - A Sazawa
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - H Chiba
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - H Kikuchi
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
| | - H Miyata
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
| | - R Matsumoto
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
| | - T Osawa
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
| | - S Maruyama
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
| | | | - T Mochizuki
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - S Chiba
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - T Akino
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - M Murakumo
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - N Miyajima
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - K Tsuchiya
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - S Murai
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
| | - N Shinohara
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
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25
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Abstract
Handling surgical microscopes with one hand requires force, especially when gripping the operating handle (OH) to swing the optic axis toward the surgeon and when moving it laterally or medially. These physical issues may be attributable to the non-ergonomic handling of the OH. To optimize the ease of OH handling, we applied ergonomic criteria to the positioning of the OH, i.e. holding the OH at as little ulnar deviation as possible and at abduction to strengthen the grip and ease arm rotation. Of eight male surgeons holding the OH of a mechanically counterbalanced surgical microscope, the OPMI Neuro/NC4 (Carl Zeiss AG), in ergonomics-based positions, six experienced reduced fatigue in the upper extremity. All reported that their hold on the microscope was firm when it unexpectedly became unbalanced. Ergonomics-based OH positioning, i.e. placing the involved muscles in the optimal length-tension relationship, may generate sufficient force for moving the microscope efficiently and reduce arm fatigue.
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Affiliation(s)
- Satoru Shimizu
- Department of Neurosurgery, Yokohama Brain and Spine Center
| | - Hiroki Kuroda
- Department of Neurosurgery, Yokohama Brain and Spine Center
| | | | - Toshihiro Kumabe
- Department of Neurosurgery, Kitasato University School of Medicine
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26
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Sugihara S, Yokota I, Mukai T, Mochizuki T, Nakayama M, Tachikawa E, Kawada Y, Minamitani K, Kikuchi N, Urakami T, Kawamura T, Kawasaki E, Kikuchi T, Amemiya S. Increased diagnosis of autoimmune childhood-onset Japanese type 1 diabetes using a new glutamic acid decarboxylase antibody enzyme-linked immunosorbent assay kit, compared with a previously used glutamic acid decarboxylase antibody radioimmunoassay kit. J Diabetes Investig 2020; 11:594-602. [PMID: 31756289 PMCID: PMC7232289 DOI: 10.1111/jdi.13184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 10/24/2019] [Accepted: 11/12/2019] [Indexed: 12/19/2022] Open
Abstract
AIMS/INTRODUCTION We compared the results of testing for glutamic acid decarboxylase antibodies (GADAb) using a radioimmunoassay (RIA) and an enzyme-linked immunosorbent assay (ELISA) in individuals with childhood-onset type 1 diabetes mellitus. MATERIALS AND METHODS Serum specimens were collected from 1,024 Japanese children (426 boys and 598 girls) in 2013. The median age at diagnosis was 7 years (0-18 years). The blood specimens were obtained at a median age of 13 years (2-22 years). RESULTS Among the 628 children whose serum specimens were collected within 5 years after diagnosis, the rate of GADAb positivity was 47.9% using RIA and 69.4% using ELISA. The participants were divided into four groups according to their RIA and ELISA results for GADAb as follows: group I (RIA+/ELISA+), group II (RIA+/ELISA-), group III (RIA-/ELISA+) and group IV (RIA-/ELISA-). The clinical and genetic characteristics of group I and group III were quite similar in terms of age at diagnosis, male/female ratio, relatively high positive rates for both autoantibody to protein tyrosine phosphatase IA-2 and autoantibody to the cation efflux transporter zinc transporter 8, and human leukocyte antigen genotype. Group II contained just five patients, and was characterized by a younger age at diagnosis, low positive rates for both autoantibody to protein tyrosine phosphatase IA-2 and autoantibody to the cation efflux transporter zinc transporter 8, and a unique human leukocyte antigen genotype. If the positive rates of either autoantibody to protein tyrosine phosphatase IA-2 or autoantibody to the cation efflux transporter zinc transporter 8 or both were added to the GADAb results using RIA, the percentage of autoimmune type 1 diabetes increased from 47.9% to 78.5%. CONCLUSIONS The diagnosis of autoimmune childhood-onset Japanese type 1 diabetes increased when GADAb results were obtained using a new ELISA method, compared with a previously utilized RIA method.
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Affiliation(s)
- Shigetaka Sugihara
- Department of PediatricsTokyo Women’s Medical University Medical Center EastTokyoJapan
| | - Ichiro Yokota
- Department of Pediatric Endocrinology and MetabolismShikoku Medical Center for Children and AdultsKagawaJapan
| | - Tokuo Mukai
- Department of PediatricsAsahikawa‐Kosei General HospitalAsahikawaJapan
| | | | | | - Emiko Tachikawa
- Department of PediatricsTokyo Women's Medical University HospitalTokyoJapan
| | - Yasumasa Kawada
- Department of PediatricsKyushu Rousai HospitalKitakyushuJapan
| | - Kinship Minamitani
- Department of PediatricsTeikyo University Chiba Medical CenterChibaJapan
| | - Nobuyuki Kikuchi
- Department of PediatricsYokohama City Minato Red Cross HospitalYokohamaJapan
| | - Tatsuhiko Urakami
- Department of PediatricsNihon University School of MedicineTokyoJapan
| | - Tomoyuki Kawamura
- Department of PediatricsOsaka City University School of MedicineOsakaJapan
| | - Eiji Kawasaki
- Department of Diabetes and EndocrinologyShin‐Koga HospitalKurumeJapan
| | - Toru Kikuchi
- Department of PediatricsSaitama Medical UniversityIrumaSaitamaJapan
| | - Shin Amemiya
- Department of PediatricsSaitama Medical UniversityIrumaSaitamaJapan
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27
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Fukasawa M, Matsushita K, Tanabe N, Mochizuki T, Hara T, Takeda M. A Novel Salvage Technique that does not Require Catheter Removal for Exit-Site Infection. Perit Dial Int 2020. [DOI: 10.1177/089686080202200515] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
| | | | | | - Takahiro Mochizuki
- Yamanashi Medical University Tamaho, Yamanashi Kidney Center Tateyama, Chiba, Japan
| | - Toru Hara
- Yamanashi Medical University Tamaho, Yamanashi Kidney Center Tateyama, Chiba, Japan
- Kameda General Hospital Kamogawa, Chiba Hara Clinic Tateyama, Chiba, Japan
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28
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Abe T, Minami K, Harabayashi T, Sazawa A, Chiba H, Kikuchi H, Miyata H, Matsumoto R, Osawa T, Maruyama S, Ishizaki J, Mochizuki T, Chiba S, Akino T, Murakumo M, Miyajima N, Tsuchiya K, Murai S, Shinohara N. Outcome of maintenance systemic chemotherapy with drug-free interval for metastatic urothelial carcinoma. Jpn J Clin Oncol 2020; 49:965-971. [PMID: 31187865 PMCID: PMC6886465 DOI: 10.1093/jjco/hyz084] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 05/15/2019] [Accepted: 05/21/2019] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE Aiming to achieve long-term disease control, maintenance systemic chemotherapy (MSC) with a 1-3-month drug-free interval is continued in selected patients. We report our experience of MSC for metastatic urothelial carcinoma (UC). METHODS Of 228 metastatic UC patients treated with systemic chemotherapy, 40 (17.5%, 40/228) had continuously undergone MSC. Data on the regimen, cycle number, and reason for the discontinuation of MSC were also collected. We analyzed OS from the initiation of MSC until death or the last follow-up, using the log-rank test to assess the significance of differences. RESULTS The median number of cycles of chemotherapy was 6, and the responses were CR in 6, PR in 20, SD in 13, and PD in 1 before MSC. Gemcitabine plus CDDP or carboplatin was mainly performed as MSC (70%, 28/40). MSC was repeated quarterly in 30 (75%, 30/40), every two months in 8 (20%, 8/40), and with other intervals in 2 (5%, 2/40). Overall, a median of 3.5 cycles (range: 1-29) of MSC was performed. The reason for the discontinuation of MSC was PD in 24 (60%, 24/40), favorable disease control in 9 (22.5%, 9/40), and myelosuppression in 3 (7.5%, 3/40), and for other reasons in 2 (5%, 2/40). MSC was ongoing in 2 (5%, 2/40). The median OS was 27 months from the initiation of MSC. PS0 (P = 0.0169), the absence of lung metastasis (P = 0.0387), and resection of the primary site (P = 0.0495) were associated with long-term survival after MSC. CONCLUSIONS In selected patients, long-term systemic chemotherapy could be performed with a drug-free interval. Our maintenance strategy with cytotoxic drugs may become one of the treatment options for long-term disease control.
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Affiliation(s)
- T Abe
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
| | - K Minami
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - T Harabayashi
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - A Sazawa
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - H Chiba
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - H Kikuchi
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
| | - H Miyata
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
| | - R Matsumoto
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
| | - T Osawa
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
| | - S Maruyama
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
| | - J Ishizaki
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - T Mochizuki
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - S Chiba
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - T Akino
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - M Murakumo
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - N Miyajima
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - K Tsuchiya
- Hokkaido Urothelial Cancer Research Group, Sapporo, Japan
| | - S Murai
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
| | - N Shinohara
- Department of Urology, Hokkaido University Hospital, Sapporo, Japan
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29
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Matsuda M, Kido T, Tsuda T, Okada K, Shiraishi Y, Suekuni H, Kamei Y, Kitazawa R, Mochizuki T. Utility of synthetic MRI in predicting the Ki-67 status of oestrogen receptor-positive breast cancer: a feasibility study. Clin Radiol 2020; 75:398.e1-398.e8. [PMID: 32019671 DOI: 10.1016/j.crad.2019.12.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 12/31/2019] [Indexed: 01/13/2023]
Abstract
AIM To evaluate the utility of synthetic magnetic resonance imaging (MRI) of the breast in predicting the Ki-67 status in patients with oestrogen receptor (ER)-positive breast cancer. MATERIALS AND METHODS Forty-nine patients with 50 histopathologically proven breast cancers who underwent additional synthetic MRI were enrolled in the present study. Using synthetic MRI images, T1 and T2 relaxation times and their standard deviations (SD) in the breast lesions before (T1-Pre, T2-Pre, PD-Pre, SD of T1-Pre, SD of T2-Pre, SD of PD-Pre) and after (T1-Gd, T2-Gd, PD-Gd, SD of T1-Gd, SD of T2-Gd, SD of PD-Gd) contrast agent injection were obtained. These quantitative values were compared between the low Ki-67 expression (<14%) lesions (low-proliferation group: n=23) and high Ki-67 expression (≥14%) lesions (high-proliferation group: n=27). RESULTS The univariate analysis showed that the SD of T1-Gd (p<0.001) and T2-Gd (p=0.042) were significantly higher in the high-proliferation group than in the low-proliferation group. Multivariate analysis further showed that the SD of T1-Gd was a significant and independent predictor of Ki-67 expression, with an area under the receiver operating characteristic (AUROC) curve of 0.885. The sensitivity, specificity, and accuracy of the SD of T1-Gd with an optimal cut-off value of 98.5 were 77.8%, 87%, and 82%, respectively. CONCLUSION The SD of T1-Gd obtained from synthetic MRI was useful to predict Ki-67 status.
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Affiliation(s)
- M Matsuda
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - T Kido
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan.
| | - T Tsuda
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - K Okada
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - Y Shiraishi
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - H Suekuni
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - Y Kamei
- Breast Center, Ehime University Hospital, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - R Kitazawa
- Division of Diagnostic Pathology, Ehime University Hospital, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - T Mochizuki
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan; Department of Radiology, I.M. Sechenov First Moscow State Medical University, 8-2 Trubetskaya Str, Moscow, 119991, Russian Federation
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30
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Hamamoto Y, Tsuruoka S, Takata N, Ishikawa H, Nagasaki K, Mochizuki T. PO-130: Postoperative radiotherapy for high-risk head and neck squamous cell carcinoma. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(20)30472-2] [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: 10/23/2022]
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Shimizu S, Mochizuki T, Kuroda H, Oka H, Kumabe T. [False Aneurysm Formation at the Origin of the M2 Segment of the Middle Cerebral Artery Following a Blunt Head Trauma:A Case Report]. No Shinkei Geka 2019; 47:1185-1191. [PMID: 31761781 DOI: 10.11477/mf.1436204097] [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: 06/10/2023]
Abstract
A 43-year-old man fell from a 1m-high truck loading platform and sustained an injury in the occiput. On admission, he was alert and neurologically intact. Computed tomography(CT)showed hemorrhage in the right sylvian fissure and parenchyma adjacent to the sphenoid wing. Magnetic resonance angiography detected no abnormalities. The course was uneventful for 11 days. However, on the 12th day, he spontaneously manifested with stupor. CT and CT angiography revealed expansion of the hemorrhage and an aneurysm arising from the origin of the M2 segment of the right middle cerebral artery. After superficial temporal artery to middle cerebral artery bypass, the aneurysm, a reddish pulsatile mass, was removed from the origin of the torn M2 segment, and the laceration was sutured. The histological diagnosis was false aneurysm. He recovered and was discharged 4 months after the trauma. Traumatic cerebral aneurysms are rare in the proximal segment of the middle cerebral artery. However, they should be distinguished from nontraumatic true aneurysms in the same region and treated as false aneurysms, which are major and critical traumatic aneurysms, for favorable outcomes.
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Affiliation(s)
- Satoru Shimizu
- Department of Neurosurgery, Yokohama Brain and Spine Center
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Kusama Y, Muraki Y, Mochizuki T, Kurai H, Gu Y, Ohmagari N. Relationship between drug formulary and frequently used cephalosporins, macrolides and quinolones in Japanese hospitals. J Infect Chemother 2019; 26:211-215. [PMID: 31543436 DOI: 10.1016/j.jiac.2019.08.013] [Citation(s) in RCA: 5] [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] [Received: 09/27/2018] [Revised: 06/10/2019] [Accepted: 08/20/2019] [Indexed: 11/16/2022]
Abstract
In Japan, hospitals' pharmaceutical affairs committees freely select the drugs to be purchased depending on the regulations of each hospital. This system poses a risk of the absence of essential drugs or an excess of similar drugs, and may promote inappropriate use of third-generation cephalosporins (3GCs) and quinolones. Against this backdrop, we researched availability of antibacterial agents in Japanese hospitals. We conducted a questionnaire-based study in eastern Shizuoka Prefecture, Japan. Questionnaires were sent to 33 hospitals that had established an interactive regional partnership on infection control. We analyzed the number of available oral cephalosporins, macrolides, and quinolones in each hospital, and the correlation between the number of total available antibacterial agents and the hospital scale and cephalexin availability. Thirty-one hospitals participated in this study. First-generation cephalosporin (1 GC) was available in only 22.5% of them. In all participating hospitals, 3GCs were available, with more than one 3 GC available in 74.2%. Quinolones were available in all hospitals, and more than one quinolone in 67.7%. The numbers of hospital beds and total available antibacterial agents were positively correlated and hospitals that owned cephalexin available also significantly more often owned other available antibacterial agents. 1 GC were available in only a few hospitals, while multiple 3GCs and quinolones were available in most. This situation may lead to excess use of 3GCs or quinolones in Japan. A low number of available drugs was associated with cephalexin unavailability. Outpatient antimicrobial stewardship may focus not only on the quality of medicine, but also on the prescribing environment.
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Affiliation(s)
- Yoshiki Kusama
- AMR Clinical Reference Center, Disease Control and Prevention Center, National Center for Global Health and Medicine, 1-21-1, Toyama, Shinjuku-ku, Tokyo, Japan; Collaborative Chairs Emerging and Reemerging Infectious Diseases, National Center for Global Health and Medicine, Graduate School of Medicine, Tohoku University, 1-1, Seriryo-tyo, Aoba-ku, Sendai, Miyagi, Japan.
| | - Yuichi Muraki
- Department of Clinical Pharmacoepidemiology, Kyoto Pharmaceutical University, 5, Nakauchi-machi, Misasagi, Yamashina-ku, Kyoto-shi, Kyoto, Japan
| | - Takahiro Mochizuki
- Department of Pharmacy, Shizuoka Cancer Center Hospital, Shizuoka, 1007, Shimonagakubo, Nagaizumi-cho, Sundo-gun, Shizuoka, Japan
| | - Hanako Kurai
- Division of Infectious Diseases, Shizuoka Cancer Center Hospital, 1007, Shimonagakubo, Nagaizumi-cho, Sundo-gun, Shizuoka, Japan
| | - Yoshiaki Gu
- AMR Clinical Reference Center, Disease Control and Prevention Center, National Center for Global Health and Medicine, 1-21-1, Toyama, Shinjuku-ku, Tokyo, Japan
| | - Norio Ohmagari
- AMR Clinical Reference Center, Disease Control and Prevention Center, National Center for Global Health and Medicine, 1-21-1, Toyama, Shinjuku-ku, Tokyo, Japan; Collaborative Chairs Emerging and Reemerging Infectious Diseases, National Center for Global Health and Medicine, Graduate School of Medicine, Tohoku University, 1-1, Seriryo-tyo, Aoba-ku, Sendai, Miyagi, Japan
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Ogawa R, Kido T, Kido T, Mochizuki T. Effect of augmented datasets on deep convolutional neural networks applied to chest radiographs. Clin Radiol 2019; 74:697-701. [DOI: 10.1016/j.crad.2019.04.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Accepted: 04/09/2019] [Indexed: 10/26/2022]
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Shimizu S, Osawa S, Kuroda H, Koizumi H, Mochizuki T, Kumabe T. Half-tied Stay Suture Technique for Cerebrovascular End-to-side Anastomosis: A Technique to Expand the View of the Hidden Ostium. Neurol Med Chir (Tokyo) 2019; 59:326-329. [PMID: 31168024 PMCID: PMC6694017 DOI: 10.2176/nmc.tn.2018-0269] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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] [Indexed: 11/20/2022] Open
Abstract
In cerebrovascular end-to-side anastomosis, thick, hard donor arteries overlying thin recipient arteries impair the view of the ostium, and may result in occlusion of the anastomosis. To improve the intraoperative view, we modified the stay sutures. After performing standard recipient arteriotomy and placing the first stay suture, we half-tied the second stay suture to leave a loop: half-tied stay suture (HSS). The thread of the HSS was secured with a clip to avoid slippage. For suturing side A, the clip pulling on the HSS was gently moved to the opposite side of side A, i.e. to side B, and the donor artery was revolved by several degrees to side B; the first stay suture was used as the fulcrum. Under the expanded view of the ostium, untied interrupted sutures were placed on side A. Then the donor vessel was revolved to the opposite side and side B was sutured in the same manner. At last, the HSS and all other sutures were tied fully. Our HSS method was used in three adults who underwent superficial temporal- to middle cerebral artery anastomosis despite anticipated poor visibility of the ostium. Compared with the conventional method, the view of the ostium was expanded with less manipulation of the vessel walls. There were no complications, and the anastomosis remained patent in all three patients. This simple modification of the stay sutures reduces the risk of anastomotic occlusion due to iatrogenic vascular damage by excessive manipulation under a restricted view.
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Affiliation(s)
- Satoru Shimizu
- Department of Neurosurgery, Yokohama Brain and Spine Center
| | | | - Hiroki Kuroda
- Department of Neurosurgery, Yokohama Brain and Spine Center
| | - Hiroyuki Koizumi
- Department of Neurosurgery, Kitasato University School of Medicine
| | | | - Toshihiro Kumabe
- Department of Neurosurgery, Kitasato University School of Medicine
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Kuroda H, Mochizuki T, Shimizu S, Kumabe T. Rupture of Thrombosed Cerebral Aneurysm During Antithrombotic Therapy for Ischemic Stroke: Case Report and Literature Review. World Neurosurg 2019; 126:468-471. [DOI: 10.1016/j.wneu.2019.02.238] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 02/25/2019] [Accepted: 02/26/2019] [Indexed: 10/27/2022]
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Tsuruoka S, Hamamoto Y, Kuribayashi Y, Inata H, Matsuno T, Mochizuki T. EP-2179 Estimation of intrafractional motion of intra-orbital optic nerve by MRI. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)32599-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kenji M, Hamamoto Y, Urashima Y, Takata N, Kikuchi K, Miyagawa M, Mochizuki T. PO-0709 External beam radiotherapy for metastatic lesions of differentiated thyroid cancer. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31129-6] [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: 10/26/2022]
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Amano K, Ishii R, Mochizuki T, Takatsu S, Abe F. Hyperactive mutation occurs adjacent to the essential glutamate 286 for transport in the yeast tryptophan permease Tat2. Biochem Biophys Res Commun 2019; 509:1047-1052. [DOI: 10.1016/j.bbrc.2019.01.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Accepted: 01/08/2019] [Indexed: 01/09/2023]
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Shimizu S, Osawa S, Dan M, Tanaka O, Mochizuki T, Nemoto M, Oka H, Kumabe T. [Formation of a Subcutaneous Amputation Neuroma after Incomplete Endoscopic Carpal Tunnel Release Resulting in Complex Regional Pain Syndrome:A Case Report]. No Shinkei Geka 2018; 46:1093-1101. [PMID: 30572307 DOI: 10.11477/mf.1436203874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This 64-year-old woman had undergone endoscopic carpal tunnel release(ECTR)for right carpal tunnel syndrome 16 months earlier. Thereafter, she reported persistent dysesthesia in the thumb and index finger, developed burning pain in the middle and ring finger, paleness, coldness, and edema of the hand, a decreased range in hand motion, and a painful subcutaneous nodule just distal to the portal in the forearm. Based on physical, radiological, and electrophysiological studies, the diagnosis was incomplete carpal tunnel release associated with complex regional pain syndrome(CRPS). At open revision surgery, the carpal tunnel was released completely and the nodule was removed. Symptoms other than hypesthesia in the middle and ring fingers improved. Pathologically, the nodule was an amputation neuroma. Her CRPS was attributed to ECTR complications; i.e., persistence of median nerve compression and the formation of an amputation neuroma in the palmar cutaneous branch of the ulnar nerve at the portal. Surgeons must be aware that ECTR, a less invasive technique, may result in serious complications including CRPS.
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Affiliation(s)
- Satoru Shimizu
- Department of Neurosurgery, Yokohama Brain and Spine Center
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Mochizuki T, Teranishi J, Takamoto D, Ohtaka M, Kawahara T, Makiyama K, Uemura H. Long-term Survival in a Kidney Transplantation Patient With Progressive Multifocal Leukoencephalopathy: A Case Report. Transplant Proc 2018; 50:2558-2561. [PMID: 30316398 DOI: 10.1016/j.transproceed.2018.02.194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 02/19/2018] [Indexed: 11/13/2022]
Abstract
Post-kidney transplantation progressive multifocal leukoencephalopathy (PML) is a rare disease on which there are very few published reports on record. PML is a demyelinating disease caused by a destructive infection of the oligodendrocytes by the JC polyomavirus. No effective therapeutic protocol has been established other than measures to revive the immune function by reducing or discontinuing the administration of immunosuppressive agents. Most cases are progressive and show a poor prognosis. We herein report a case in which renal function has been maintained for 2 years following the onset of PML, which was initially diagnosed 3 years after kidney transplantation.
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Affiliation(s)
- T Mochizuki
- Department of Urology and Renal Transplantation, Yokohama City University Medical Center, Yokohama, Japan.
| | - J Teranishi
- Department of Urology and Renal Transplantation, Yokohama City University Medical Center, Yokohama, Japan
| | - D Takamoto
- Department of Urology and Renal Transplantation, Yokohama City University Medical Center, Yokohama, Japan
| | - M Ohtaka
- Department of Urology and Renal Transplantation, Yokohama City University Medical Center, Yokohama, Japan
| | - T Kawahara
- Department of Urology and Renal Transplantation, Yokohama City University Medical Center, Yokohama, Japan
| | - K Makiyama
- Department of Urology, Yokohama City University School of Medicine, Yokohama, Japan
| | - H Uemura
- Department of Urology and Renal Transplantation, Yokohama City University Medical Center, Yokohama, Japan
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Takamoto D, Kawahara T, Mochizuki T, Makiyama K, Teranishi J, Uemura H. A Longer History of Hemodialysis Can Lead to Sarcopenia in Renal Transplantation Patients. Transplant Proc 2018; 50:2447-2450. [DOI: 10.1016/j.transproceed.2018.02.192] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 02/26/2018] [Indexed: 12/20/2022]
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Nakamura T, Yoshida N, Anzawa K, Nishibu A, Mochizuki T. Itching in a trichophytin contact dermatitis mouse model and the antipruritic effect of antifungal agents. Clin Exp Dermatol 2018; 44:381-389. [PMID: 30187507 DOI: 10.1111/ced.13719] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/25/2018] [Indexed: 11/26/2022]
Abstract
BACKGROUND Tinea is an infectious disease by dermatophytes, of which Trichophyton species accounts for the overwhelming majority of case. Tinea often causes itching with inflammation. In terms of pruritus by fungal infection, however, tinea has not been investigated sufficiently to date. AIM To evaluate itch caused by Trichophyton infection and the effect of antifungal agents on the infection, by measuring scratch behaviour and profiles of inflammatory cytokines and chemokines. METHODS We used a previously established mouse model of contact hypersensitivity induced by trichophytin, a crude extract from Trichophyton mentagrophytes. Scratching behaviour was recorded using a counting device that measured an electric current induced in a coil by movement of magnets that had been inserted into the hind paws of each animal. We investigated expression of various genes in lesional skin of mice and in normal human epidermal keratinocytes. We also investigated the antipruritic effects of the corticosteroid dexamethasone (DEX) and three antifungal agents: ketoconazole (KCZ), terbinafine (TBF) and liranaftate (LNF). RESULTS Biphasic peaks of scratching were observed at 1 h and at 6-7 h during an observation period of 14 h after trichophytin induction. For lesional skin, RNA was extracted 24 h after trichophytin challenge, and increased expression was seen in the genes for interleukin (IL)-17A, interferon-γ, tumour necrosis factor (TNF)-α, macrophage inflammatory protein (MIP)-2 and Dectin-1, whereas there was no obvious change in the genes for IL-31 and prostaglandin (PG)E2. Furthermore, KCZ inhibited histidine decarboxylase (HDC) expression in vitro and in vivo, and inhibited scratching in the very early phase. LNF inhibited expression of thymic stromal lymphopoietin (TSLP) and IL-8 in vitro, and TSLP, TNF-α, IL-1α and MIP2 in vivo, and also scratching in the early phase. TBF did not induce any significant alterations in either gene expression or scratching. DEX suppressed expression of all the chemical mediators except HDC in vitro and in vivo, and inhibited scratching. CONCLUSION Antifungals can inhibit itching induced by fungal infection through different mechanisms.
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Affiliation(s)
- T Nakamura
- Department of R&D Center, Ikeda Mohando Co. Ltd, Toyama, Japan.,Department of Dermatology, Kanazawa Medical University, Ishikawa, Japan
| | - N Yoshida
- Department of R&D Center, Ikeda Mohando Co. Ltd, Toyama, Japan
| | - K Anzawa
- Department of Dermatology, Kanazawa Medical University, Ishikawa, Japan
| | - A Nishibu
- Department of Dermatology, Kanazawa Medical University, Ishikawa, Japan
| | - T Mochizuki
- Department of Dermatology, Kanazawa Medical University, Ishikawa, Japan
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Tsuruoka S, Kataoka M, Makita K, Ishikawa H, Takada N, Nagasaki K, Hamamoto Y, Mochizuki T. EP-1435: The role of elective nodal irradiation in radiotherapy for stage I esophageal cancer. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31744-4] [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: 10/14/2022]
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44
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Sawada A, Kawanishi K, Morikawa S, Nakano T, Kodama M, Mitobe M, Taneda S, Koike J, Ohara M, Nagashima Y, Nitta K, Mochizuki T. Biopsy-proven vancomycin-induced acute kidney injury: a case report and literature review. BMC Nephrol 2018; 19:72. [PMID: 29587650 PMCID: PMC5872390 DOI: 10.1186/s12882-018-0845-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [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: 09/19/2017] [Accepted: 02/20/2018] [Indexed: 11/10/2022] Open
Abstract
Background Vancomycin is the first-line antibiotic for methicillin-resistant Staphylococcus aureus and coagulase-negative strains. The risk of vancomycin-induced acute kidney injury increases with plasma vancomycin levels. Vancomycin-induced acute kidney injury is histologically characterized by acute interstitial nephritis and/or acute tubular necrosis. However, only 12 biopsy-proven cases of vancomycin-induced acute kidney injury have been reported so far, as renal biopsy is rarely performed for such cases. Current recommendations for the prevention or treatment of vancomycin-induced acute kidney injury are drug monitoring of plasma vancomycin levels using trough level and drug withdrawal. Oral prednisone and high-flux haemodialysis have led to the successful recovery of renal function in some biopsy-proven cases. Case presentation We present the case of a 41-year-old man with type 1 diabetes mellitus, who developed vancomycin-induced acute kidney injury during treatment for Fournier gangrene. His serum creatinine level increased to 1020.1 μmol/L from a baseline of 79.6 μmol/L, and his plasma trough level of vancomycin peaked at 80.48 μg/mL. Vancomycin discontinuation and frequent haemodialysis with high-flux membrane were immediately performed following diagnosis. Renal biopsy showed acute tubular necrosis and focal acute interstitial nephritis, mainly in the medullary rays (medullary ray injury). There was no sign of glomerulonephritis, but mild diabetic changes were detected. He was discharged without continuing haemodialysis (serum creatinine level, 145.0 μmol/L) 49 days after initial vancomycin administration. Conclusions This case suggests that frequent haemodialysis and renal biopsy could be useful for the treatment and assessment of vancomycin-induced acute kidney injury, particularly in high-risk cases or patients with other renal disorders.
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Affiliation(s)
- Anri Sawada
- Department of Surgical Pathology, Tokyo Women's Medical University, 8-1 Kawadacho, Shinjuku, Tokyo, 162-8666, Japan. .,Department of Medicine Kidney Center, Tokyo Women's Medical University, Tokyo, Japan.
| | - Kunio Kawanishi
- Department of Surgical Pathology, Tokyo Women's Medical University, 8-1 Kawadacho, Shinjuku, Tokyo, 162-8666, Japan
| | - Shohei Morikawa
- Department of Nephrology, Kameda Medical Center, Chiba, Japan
| | - Toshihiro Nakano
- Department of Medicine Kidney Center, Tokyo Women's Medical University, Tokyo, Japan
| | - Mio Kodama
- Department of Medicine Kidney Center, Tokyo Women's Medical University, Tokyo, Japan
| | - Mitihiro Mitobe
- Department of Nephrology, Kameda Medical Center, Chiba, Japan
| | - Sekiko Taneda
- Department of Surgical Pathology, Tokyo Women's Medical University, 8-1 Kawadacho, Shinjuku, Tokyo, 162-8666, Japan
| | - Junki Koike
- Department of Pathology, Kawasaki Municipal Tama Hospital, Kawasaki, Kanagawa, Japan
| | - Mamiko Ohara
- Department of Nephrology, Kameda Medical Center, Chiba, Japan
| | - Yoji Nagashima
- Department of Surgical Pathology, Tokyo Women's Medical University, 8-1 Kawadacho, Shinjuku, Tokyo, 162-8666, Japan
| | - Kosaku Nitta
- Department of Medicine Kidney Center, Tokyo Women's Medical University, Tokyo, Japan
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Kuwahara H, Song J, Shimoura T, Yoshida-Tanaka K, Mizuno T, Mochizuki T, Nishina K, Nagata T, Kusuhara H, Yokota T. Heteroduplex oligonucleotide as a platform technology to modulate blood-brain barrier function in vivo. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.417] [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: 11/26/2022]
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Tsuruoka S, Kataoka M, Uwatsu K, Nishikawa A, Mochizuki T. Tumor Growth Patterns on Magnetic Resonance Imaging is Correlated With Prognosis in Patients With Locally Advanced Cervical Cancer Treated with Radiation Therapy. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1351] [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]
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47
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Uemura S, Mochizuki T, Kurosaka G, Hashimoto T, Masukawa Y, Abe F. Functional analysis of human aromatic amino acid transporter MCT10/TAT1 using the yeast Saccharomyces cerevisiae. Biochimica et Biophysica Acta (BBA) - Biomembranes 2017; 1859:2076-2085. [DOI: 10.1016/j.bbamem.2017.07.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 07/03/2017] [Accepted: 07/24/2017] [Indexed: 01/08/2023]
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Kono T, Uetani T, Inoue K, Higashi H, Aono J, Nagai T, Nishimura K, Suzuki J, Kido T, Mochizuki T, Okura T, Higaki J, Ikeda S. P538Diagnostic accuracy of myocardial CT perfusion imaging to detect myocardial ischemia: comparison with echocardiographic assessment of coronary flow reserve and invasive fractional flow reserve. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p538] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Honda H, Kubo K, Yamamoto R, Ishii Y, Kanzaki H, Hamamoto Y, Mochizuki T, Oita M, Sasaki M, Tominaga M, Uto Y. EP-1474: Feasibility of dose delivery error detection by a transmission detector for patient-specific QA. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31909-6] [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]
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Hamamoto Y, Taguchi S, Manabe T, Kanzaki H, Nagasaki K, Takata N, Mochizuki T. EP-1394: Prognostic factor for palliative radiotherapy of bone metastases in good performance-status patients. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31829-7] [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]
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