1
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Motohashi K, Higuchi H, Nakajima H, Mori S, Sakuda A, Hayashi A. Mechanochemical synthesis of fluoride-ion conducting glass and glass-ceramic in ZrF 4-BaF 2 binary system. Sci Rep 2024; 14:8808. [PMID: 38627428 PMCID: PMC11021453 DOI: 10.1038/s41598-024-59040-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 04/05/2024] [Indexed: 04/19/2024] Open
Abstract
Fluoride glasses in the binary system ZrF4-BaF2 were prepared via mechanochemical treatment. The glass-forming region of the ZrF4-BaF2 system obtained using the mechanochemical method was wider than that obtained using the conventional melt-quenching method. The glass-ceramic 60ZrF4·40BaF2 (mol%) sample was obtained by heat treatment and shows a higher conductivity of 1.2 × 10-6 S cm-1 at 200 °C than the pristine glass. This study revealed that mechanochemical treatment was effective for the synthesis of fluoride glasses.
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Affiliation(s)
- Kota Motohashi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan
| | - Hiroshi Higuchi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan
| | - Hiroshi Nakajima
- Department of Materials Science, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-Cho, Naka-Ku, Sakai, Osaka, 599-8531, Japan
| | - Shigeo Mori
- Department of Materials Science, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-Cho, Naka-Ku, Sakai, Osaka, 599-8531, Japan
| | - Atsushi Sakuda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan
| | - Akitoshi Hayashi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan.
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2
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Kameda K, Yanagiya R, Miyatake Y, Carreras J, Higuchi H, Murayama H, Ishida T, Ito A, Iida S, Fukuhara N, Harigae H, Fujioka Y, Takahashi N, Wada H, Ishida F, Nakazawa H, Ishihara R, Murakami Y, Tagawa H, Matsuura T, Nakagawa S, Iwabuchi S, Hashimoto S, Imadome KI, Nakamura N, Ishizawa K, Kanda Y, Ando K, Kotani A. The hepatic niche leads to aggressive natural killer cell leukemia proliferation through the transferrin-transferrin receptor 1 axis. Blood 2023; 142:352-364. [PMID: 37146246 DOI: 10.1182/blood.2022018597] [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: 10/03/2022] [Revised: 02/28/2023] [Accepted: 03/13/2023] [Indexed: 05/07/2023] Open
Abstract
Aggressive natural killer cell leukemia (ANKL) is a rare lymphoid neoplasm frequently associated with Epstein-Barr virus, with a disastrously poor prognosis. Owing to the lack of samples from patients with ANKL and relevant murine models, comprehensive investigation of its pathogenesis including the tumor microenvironment (TME) has been hindered. Here we established 3 xenograft mice derived from patients with ANKL (PDXs), which enabled extensive analysis of tumor cells and their TME. ANKL cells primarily engrafted and proliferated in the hepatic sinusoid. Hepatic ANKL cells were characterized by an enriched Myc-pathway and proliferated faster than those in other organs. Interactome analyses and in vivo CRISPR-Cas9 analyses revealed transferrin (Tf)-transferrin receptor 1 (TfR1) axis as a potential molecular interaction between the liver and ANKL. ANKL cells were rather vulnerable to iron deprivation. PPMX-T003, a humanized anti-TfR1 monoclonal antibody, showed remarkable therapeutic efficacy in a preclinical setting using ANKL-PDXs. These findings indicate that the liver, a noncanonical hematopoietic organ in adults, serves as a principal niche for ANKL and the inhibition of the Tf-TfR1 axis is a promising therapeutic strategy for ANKL.
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Affiliation(s)
- Kazuaki Kameda
- Department of Innovative Medical Science, Tokai University School of Medicine, Isehara, Japan
- Department of Hematological Malignancy, Institute of Medical Sciences, Tokai University, Isehara, Japan
- Division of Hematology, Jichi Medical University Saitama Medical Center, Saitama, Japan
| | - Ryo Yanagiya
- Department of Innovative Medical Science, Tokai University School of Medicine, Isehara, Japan
- Department of Hematological Malignancy, Institute of Medical Sciences, Tokai University, Isehara, Japan
- Department of Neurology, Hematology, Diabetology, Endocrinology, and Metabolism (3rd Department of Internal Medicine), Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Yuji Miyatake
- Department of Innovative Medical Science, Tokai University School of Medicine, Isehara, Japan
- Department of Hematological Malignancy, Institute of Medical Sciences, Tokai University, Isehara, Japan
| | - Joaquim Carreras
- Department of Pathology, Tokai University School of Medicine, Isehara, Japan
| | - Hiroshi Higuchi
- Department of Innovative Medical Science, Tokai University School of Medicine, Isehara, Japan
- Department of Hematological Malignancy, Institute of Medical Sciences, Tokai University, Isehara, Japan
- Department of Dermatology, Center for Cancer Immunology and Cutaneous Biology Research Center, Center for Cancer Research, Massachusetts General Hospital Cancer Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Hiromichi Murayama
- Department of Hematology and Oncology, Tokai University School of Medicine, Isehara, Japan
| | - Takashi Ishida
- Department of Immunology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Asahi Ito
- Department of Hematology and Oncology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Shinsuke Iida
- Department of Hematology and Oncology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Noriko Fukuhara
- Department of Hematology, Tohoku University Hospital, Sendai, Japan
| | - Hideo Harigae
- Department of Hematology, Tohoku University Hospital, Sendai, Japan
| | - Yuki Fujioka
- Department of Hematology, Nephrology and Rheumatology, Akita University Graduate School of Medicine, Akita, Japan
| | - Naoto Takahashi
- Department of Hematology, Nephrology and Rheumatology, Akita University Graduate School of Medicine, Akita, Japan
| | - Hidenori Wada
- Department of Hematology, Saitama Citizens Medical Center, Saitama, Japan
| | - Fumihiro Ishida
- Department of Biomedical Laboratory Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | - Hideyuki Nakazawa
- Division of Hematology, Department of Internal Medicine, Shinshu University School of Medicine, Matsumoto, Japan
| | - Rei Ishihara
- Department of Laboratory Science, Gunma University Graduate School of Health Science, Maebashi, Japan
| | - Yuki Murakami
- Department of Laboratory Science, Gunma University Graduate School of Health Science, Maebashi, Japan
| | - Hiroyuki Tagawa
- Department of Hematology, Hiraka General Hospital, Yokote, Japan
| | | | - So Nakagawa
- Department of Molecular Life Science, Tokai University School of Medicine, Isehara, Japan
| | - Sadahiro Iwabuchi
- Department of Molecular Pathophysiology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Japan
| | - Shinichi Hashimoto
- Department of Molecular Pathophysiology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Japan
| | - Ken-Ichi Imadome
- Department of Advanced Medicine for Infections, National Center for Child Health and Development, Tokyo, Japan
| | - Naoya Nakamura
- Department of Pathology, Tokai University School of Medicine, Isehara, Japan
| | - Kenichi Ishizawa
- Department of Neurology, Hematology, Diabetology, Endocrinology, and Metabolism (3rd Department of Internal Medicine), Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Yoshinobu Kanda
- Division of Hematology, Jichi Medical University Saitama Medical Center, Saitama, Japan
- Division of Hematology, Department of Medicine, Jichi Medical University, Shimotsuke, Japan
| | - Kiyoshi Ando
- Department of Hematology and Oncology, Tokai University School of Medicine, Isehara, Japan
| | - Ai Kotani
- Department of Innovative Medical Science, Tokai University School of Medicine, Isehara, Japan
- Department of Hematological Malignancy, Institute of Medical Sciences, Tokai University, Isehara, Japan
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3
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Ohata Y, Higuchi H, Ogawa S, Watari T. Pneumatosis Cystoides Intestinalis: A Case Report. Am J Case Rep 2023; 24:e938207. [PMID: 36694439 PMCID: PMC9885298 DOI: 10.12659/ajcr.938207] [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] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Pneumatosis cystoides intestinalis (PCI) is a rare condition in which cystic gas is found in the submucosal and serosal tissues of the intestinal wall. CASE REPORT The patient, an 84-year-old woman, was referred to us because of abdominal distention and diarrhea lasting 2 weeks. On initial physical examination, there was marked abdominal distention without tenderness. Blood tests revealed no abnormalities, but simple abdominal radiographs showed gas in the small intestine. Contrast-enhanced computed tomography showed massive emphysema in the intestinal wall with no signs of portal gas or intestinal ischemia. The patient was diagnosed with PCI, and the prognosis was good. The patient showed improvement when managed with an elimination diet and follow-up. CONCLUSIONS Herein, we present the characteristics and diagnosis of PCI because the imaging findings of PCI can appear more severe than the actual condition, causing it to be mistaken for other serious diseases, which leads to unnecessary surgical procedures.
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Affiliation(s)
- Yoko Ohata
- Department of Human Resources Development for General Practitioner, Shimane Prefectural Central Hospital, Izumo, Shimane, Japan
| | - Hiroshi Higuchi
- Department of Emergency Medicine, Shimane Prefectural Central Hospital, Izumo, Shimane, Japan
| | - Sayaka Ogawa
- Department of Gastroenterology, Shimane Prefectural Central Hospital, Izumo, Shimane, Japan
| | - Takashi Watari
- General Medicine Center, Shimane University Hospital, Izumo, Shimane, Japan,Department of Medicine, University of Michigan Medical School, Ann Arbor, MI, USA,Corresponding Author: Takashi Watari, e-mail:
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4
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Soneda K, Uda K, Araki K, Murakoshi T, Yuza Y, Saito O, Kinoshita K, Higuchi H, Horikoshi Y. Clinical characteristics and treatment of IMP-type carbapenemase-producing Enterobacteriaceae bacteremia: Case series and literature review. J Infect Chemother 2023; 29:26-32. [PMID: 36100144 DOI: 10.1016/j.jiac.2022.09.003] [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: 06/13/2022] [Revised: 09/02/2022] [Accepted: 09/05/2022] [Indexed: 12/31/2022]
Abstract
BACKGROUND Several carbapenemases have been identified globally in Enterobacteriaceae. In Japan, IMP-type carbapenemase is the most prevalent, although cases of carbapenemase-producing Enterobacteriaceae (CPE) bacteremia are still scarce. The present case series and literature review aimed to elucidate the clinical characteristics and treatment strategies for IMP-type CPE bacteremia. METHODS Clinical data on pediatric cases of IMP-type CPE bacteremia at the Tokyo Metropolitan Children's Medical Center between 2010 and 2020 were collected, and a review of past studies of IMP-type CPE bacteremia has been provided. RESULTS Five pediatric episodes of IMP-type CPE bacteremia were identified. Our review of previous literature on IMP-type CPE bacteremia revealed 24 adult patients, but no pediatric patients. All 29 cases had underlying diseases, and 23 (79%) received combination therapy. The median duration of antibiotic therapy was 14 days (interquartile range: 9-14 days). The overall mortality rate was 38% (11/29). The mortality rates associated with monotherapy and combination therapy were 67% (4/6) and 30% (7/23), respectively. CONCLUSIONS We report the first case series of IMP-type CPE bacteremia in children. Our review of past studies suggests that combination therapy might lead to better survival outcomes in patients with IMP-type CPE bacteremia. Further research is needed to establish an optimal treatment strategy for IMP-type CPE bacteremia.
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Affiliation(s)
- Keiko Soneda
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan.
| | - Kazuhiro Uda
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan; Department of Pediatrics, Okayama University Hospital, Okayama, Japan
| | - Kotaro Araki
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan; Department of Pediatrics, Okinawa Prefectural Yaeyama Hospital, Okinawa, Japan
| | - Takatsugu Murakoshi
- Division of Gastroenterology, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Yuki Yuza
- Division of Hematology and Oncology, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Osamu Saito
- Department of Pediatric Emergency and Critical Care Medicine, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Kazue Kinoshita
- Division of Genetic Laboratory, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Hiroshi Higuchi
- Division of Microbiology, Department of Laboratory, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Yuho Horikoshi
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
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5
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Mabuchi H, Higuchi H, Imada T, Watari T. Unexplained Abdominal Pain Caused by Fracture of the Thoracic Vertebra. Am J Case Rep 2022; 23:e937740. [DOI: 10.12659/ajcr.937740] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Hiroya Mabuchi
- Department of Community Medicine, Shimane Prefectural Central Hospital, Izumo, Shimane, Japan
| | - Hiroshi Higuchi
- Department of Emergency and Critical Medicine, Shimane Prefectural Central Hospital, Izumo, Shimane, Japan
| | - Toshihiro Imada
- Department of General Medicine, Shimane Prefectural Central Hospital, Izumo, Shimane, Japan
| | - Takashi Watari
- General Medicine Center, Shimane University Hospital, Izumo, Shimane, Japan
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6
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Higuchi H, Nakamura T, Mashino J, Imada T, Morimoto T. Prediction of ESBL-producing E coli for suspected urinary tract infection. Urologia 2022; 90:151-156. [PMID: 35686830 DOI: 10.1177/03915603221103438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Aim: The widespread existence of extended-spectrum β-lactamase (ESBL) producing Escherichia coli ( E. coli) has become a critical threat in developed countries. Prediction rule for ESBL producing E. coli is relevant to see patients with suspected urinary tract infection. Materials and methods: We collected clinical and laboratory data and constructed multivariate logistic regression models to develop a clinical prediction rule in the derivation cohort with 1185 patients with urine cultures and validated the rule in the validation cohort with 516 patients. Results: ESBL-producing E. coli was found in 185 patients (16%) in the derivation cohort. When assigning 14 points for being female (odds ratio (OR): 4.2), six points for CRP >5 mg/dl (OR: 1.87), and four points for a history of urinary tract infection (OR: 1.52), the area under the curve (AUC) had 0.67 (95% confidence interval (CI): 0.63–0.70) in the derivation cohort and 0.64 (95% CI: 0.59–0.69] in the validation cohort. Conclusions: The developed prediction rule had moderate accuracy to predict ESBL-producing E. coli in patients with suspected urinary tract infection.
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Affiliation(s)
- Hiroshi Higuchi
- Department of Emergency Medicine, Shimane Prefectural Central Hospital, Izumo, Japan
| | - Tsukasa Nakamura
- Department of Infectious Diseases, Shimane Prefectural Central Hospital, Izumo, Japan
- Clinical Education and Research Center, Shimane Prefectural Central Hospital, Izumo, Japan
| | - Junji Mashino
- Clinical Education and Research Center, Shimane Prefectural Central Hospital, Izumo, Japan
- Department of Community Medicine, Shimane Prefectural Central Hospital, Izumo, Japan
| | - Toshihiro Imada
- Department of General Medicine, Shimane Prefectural Central Hospital, Izumo, Japan
| | - Takeshi Morimoto
- Clinical Education and Research Center, Shimane Prefectural Central Hospital, Izumo, Japan
- Department of Clinical Epidemiology, Hyogo College of Medicine, Nishinomiya, Japan
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7
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Kudo K, Miki Y, Carreras J, Nakayama S, Nakamoto Y, Ito M, Nagashima E, Yamamoto K, Higuchi H, Morita SY, Inoue A, Aoki J, Ando K, Nakamura N, Murakami M, Kotani A. Secreted phospholipase A 2 modifies extracellular vesicles and accelerates B cell lymphoma. Cell Metab 2022; 34:615-633.e8. [PMID: 35294862 DOI: 10.1016/j.cmet.2022.02.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [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: 03/15/2021] [Revised: 11/15/2021] [Accepted: 02/22/2022] [Indexed: 12/26/2022]
Abstract
Extracellular vesicles (EVs) including exosomes act as intercellular communicators by transferring protein and microRNA cargoes, yet the role of EV lipids remains unclear. Here, we show that the pro-tumorigenic action of lymphoma-derived EVs is augmented via secreted phospholipase A2 (sPLA2)-driven lipid metabolism. Hydrolysis of EV phospholipids by group X sPLA2, which was induced in macrophages of Epstein-Barr virus (EBV) lymphoma, increased the production of fatty acids, lysophospholipids, and their metabolites. sPLA2-treated EVs were smaller and self-aggregated, showed better uptake, and increased cytokine expression and lipid mediator signaling in tumor-associated macrophages. Pharmacological inhibition of endogenous sPLA2 suppressed lymphoma growth in EBV-infected humanized mice, while treatment with sPLA2-modified EVs reversed this phenotype. Furthermore, sPLA2 expression in human large B cell lymphomas inversely correlated with patient survival. Overall, the sPLA2-mediated EV modification promotes tumor development, highlighting a non-canonical mechanistic action of EVs as an extracellular hydrolytic platform of sPLA2.
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Affiliation(s)
- Kai Kudo
- Department of Innovative Medical Science, Tokai University School of Medicine, Isehara, Japan; Division of Hematological Malignancy, Institute of Medical Sciences, Tokai University, Isehara, Japan
| | - Yoshimi Miki
- Laboratory of Microenvironmental Metabolic Health Sciences Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Joaquim Carreras
- Department of Pathology, Tokai University School of Medicine, Isehara, Japan
| | - Shunya Nakayama
- Department of Innovative Medical Science, Tokai University School of Medicine, Isehara, Japan; Division of Hematological Malignancy, Institute of Medical Sciences, Tokai University, Isehara, Japan; Department of Hematology and Oncology, Tokai University School of Medicine, Isehara, Japan
| | - Yasushi Nakamoto
- Department of Innovative Medical Science, Tokai University School of Medicine, Isehara, Japan; Division of Hematological Malignancy, Institute of Medical Sciences, Tokai University, Isehara, Japan
| | - Masatoshi Ito
- Support Center for Medical Research and Education, Tokai University School of Medicine, Isehara, Japan
| | - Etsuko Nagashima
- Department of Innovative Medical Science, Tokai University School of Medicine, Isehara, Japan; Division of Hematological Malignancy, Institute of Medical Sciences, Tokai University, Isehara, Japan
| | - Kei Yamamoto
- Division of Bioscience and Bioindustry, Graduate School of Technology, Industrial and Social Sciences, Tokushima University, Tokushima, Japan
| | - Hiroshi Higuchi
- Center for Cancer Immunology, Cutaneous Biology Research Center, Center for Cancer Research, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Shin-Ya Morita
- Department of Pharmacy, Shiga University of Medical Science Hospital, Otsu, Japan
| | - Asuka Inoue
- Department of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Junken Aoki
- Department of Health Chemistry, Graduate School of Pharmaceutical Sciences, University of Tokyo, Tokyo, Japan
| | - Kiyoshi Ando
- Department of Hematology and Oncology, Tokai University School of Medicine, Isehara, Japan
| | - Naoya Nakamura
- Department of Pathology, Tokai University School of Medicine, Isehara, Japan
| | - Makoto Murakami
- Laboratory of Microenvironmental Metabolic Health Sciences Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
| | - Ai Kotani
- Department of Innovative Medical Science, Tokai University School of Medicine, Isehara, Japan; Division of Hematological Malignancy, Institute of Medical Sciences, Tokai University, Isehara, Japan.
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8
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Otsubo J, Higuchi H. Time-lapse camera photographs reveal arrival and breeding timing of short-tailed albatrosses Phoebastria albatrus. ENDANGER SPECIES RES 2022. [DOI: 10.3354/esr01160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Monitoring the ecology of seabirds breeding on remote islands is often challenging. However, time-lapse cameras have enabled the surveillance of inaccessible sites. We examined arrival/departure movements and breeding timing of the endangered short-tailed albatross Phoebastria albatrus with time-lapse cameras on Torishima, a remote and uninhabited island in the northwestern Pacific, from November 2016 to June 2017. The photographic images revealed that the first arrival of the albatrosses on the island was on 7 October 2016, and the number of birds reached a peak of 506 on 5 November. The white pairs arrived and began incubating approximately 1 wk earlier than the white/brownish pairs. From the end of January, the number of birds repeatedly increased and decreased within a short period of time. The birds’ movement out of the breeding colony often occurred synchronously with a rapid decline in the mean daily air pressure. Adult birds began to leave the colony in April. The number of chicks reached up to 200 at the beginning of May, but they all left the colony before 1 June. The processing of the photographic images taken during the incubation and early guard periods revealed that hatching failed in approximately 10% of the pairs. The validity of information collected by time-lapse cameras was confirmed by comparing it with the results of previous field studies. This study will contribute to the collection of essential information for monitoring and conserving seabirds breeding on remote islands where successive or frequent fieldwork is difficult.
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Affiliation(s)
- J Otsubo
- Institute of Environmental Informatics, IDEA Consultant Inc., Tsuzuki, Yokohama, Japan 224-0025
| | - H Higuchi
- Research and Education Center for Natural Sciences, Keio University, Hiyoshi, Yokohama, Japan 223-8521
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9
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Kishikawa T, Higuchi H, Wang L, Panch N, Maymi V, Best S, Lee S, Notoya G, Toker A, Matesic LE, Wulf GM, Wei W, Otsuka M, Koike K, Clohessy JG, Lee YR, Pandolfi PP. WWP1 inactivation enhances efficacy of PI3K inhibitors while suppressing their toxicities in breast cancer models. J Clin Invest 2021; 131:140436. [PMID: 34907909 DOI: 10.1172/jci140436] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 10/27/2021] [Indexed: 12/25/2022] Open
Abstract
Activation of the phosphatidylinositol 3-kinase (PI3K) signaling pathway is a pervasive event in tumorigenesis due to PI3K mutation and dysfunction of phosphatase and tensin homolog deleted on chromosome 10 (PTEN). Pharmacological inhibition of PI3K has resulted in variable clinical outcomes, however, raising questions regarding the possible mechanisms of unresponsiveness and resistance to treatment. WWP1 is an oncogenic HECT-type ubiquitin E3 ligase frequently amplified and mutated in multiple cancers, as well as in the germ lines of patients predisposed to cancer, and was recently found to activate PI3K signaling through PTEN inactivation. Here, we demonstrate that PTEN dissociated from the plasma membrane upon treatment with PI3K inhibitors through WWP1 activation, whereas WWP1 genetic or pharmacological inhibition restored PTEN membrane localization, synergizing with PI3K inhibitors to suppress tumor growth both in vitro and in vivo. Furthermore, we demonstrate that WWP1 inhibition attenuated hyperglycemia and the consequent insulin feedback, which is a major tumor-promoting side effect of PI3K inhibitors. Mechanistically, we found that AMPKα2 was ubiquitinated and, in turn, inhibited in its activatory phosphorylation by WWP1, whereas WWP1 inhibition facilitated AMPKα2 activity in the muscle to compensate for the reduction in glucose uptake observed upon PI3K inhibition. Thus, our identification of the cell-autonomous and systemic roles of WWP1 inhibition expands the therapeutic potential of PI3K inhibitors and reveals new avenues of combination cancer therapy.
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Affiliation(s)
- Takahiro Kishikawa
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA.,Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiroshi Higuchi
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Limei Wang
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Nivedita Panch
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Valerie Maymi
- Preclinical Murine Pharmacogenetics Facility and Mouse Hospital, and
| | - Sachem Best
- Preclinical Murine Pharmacogenetics Facility and Mouse Hospital, and
| | - Samuel Lee
- Preclinical Murine Pharmacogenetics Facility and Mouse Hospital, and
| | - Genso Notoya
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Alex Toker
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Lydia E Matesic
- Department of Biological Sciences, University of South Carolina, Columbia, South Carolina, USA
| | - Gerburg M Wulf
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Department of Medicine, Division of Hematology/Oncology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Wenyi Wei
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Motoyuki Otsuka
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Kazuhiko Koike
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - John G Clohessy
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA.,Preclinical Murine Pharmacogenetics Facility and Mouse Hospital, and
| | - Yu-Ru Lee
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA.,Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Pier Paolo Pandolfi
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA.,Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy.,Renown Institute for Cancer, Nevada System of Higher Education, Reno, Nevada, USA
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10
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Kawashima M, Higuchi H, Kotani A. Significance of trogocytosis and exosome-mediated transport in establishing and maintaining the tumor microenvironment in lymphoid malignancies. J Clin Exp Hematop 2021; 61:192-201. [PMID: 34193756 PMCID: PMC8808107 DOI: 10.3960/jslrt.21005] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
It is widely accepted that the tumor microenvironment plays an important role in the progression of lymphoid malignancies. Interaction between the tumor and its surrounding immune cells is considered a potential therapeutic target. For example, anti-programmed cell death 1 (PD-1) antibody stimulates the surrounding exhausted immune cells to release PD-1/PD-L1, thereby leading to the regression of PD-L1-positive tumors. Recently, biological phenomena, such as trogocytosis and exosome-mediated transport were demonstrated to be involved in establishing and maintaining the tumor microenvironment. We found that trogocytosis-mediated PD-L1/L2 transfer from tumor cells to monocytes/macrophages is involved in immune dysfunction in classic Hodgkin lymphoma. Exosomes derived from Epstein-Barr virus (EBV)-associated lymphoma cells induce lymphoma tumorigenesis by transferring the EBV-coding microRNAs from the infected cells to macrophages. In this review, we summarized these biological phenomena based on our findings.
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Affiliation(s)
- Masaharu Kawashima
- Department of Hematological Malignancy, Institute of Medical Science, Tokai University, Isehara, Kanagawa, Japan.,Division of Clinical Oncology and Hematology, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - Hiroshi Higuchi
- Department of Hematological Malignancy, Institute of Medical Science, Tokai University, Isehara, Kanagawa, Japan.,Center for Cancer Immunology and Cutaneous Biology Research Center, Center for Cancer Research, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Ai Kotani
- Department of Hematological Malignancy, Institute of Medical Science, Tokai University, Isehara, Kanagawa, Japan
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11
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Ito M, Kudo K, Higuchi H, Otsuka H, Tanaka M, Fukunishi N, Araki T, Takamatsu M, Ino Y, Kimura Y, Kotani A. Proteomic and phospholipidomic characterization of extracellular vesicles inducing tumor microenvironment in Epstein-Barr virus-associated lymphomas. FASEB J 2021; 35:e21505. [PMID: 33723887 DOI: 10.1096/fj.202002730r] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 02/08/2021] [Accepted: 02/22/2021] [Indexed: 12/13/2022]
Abstract
Epstein-Barr virus (EBV) causes malignant carcinomas including B cell lymphomas accompanied by the systemic inflammation. Previously, we observed that phosphatidylserine (PS)-exposing subset of extracellular vesicles (EVs) secreted from an EBV strain Akata-transformed lymphoma (Akata EVs) convert surrounding phagocytes into tumor-associated macrophages (TAMs) via induction of inflammatory response, which is in part mediated by EBV-derived micro RNAs. However, it is still unclear about EV-carried other potential inflammatory factors associated with TAM formation in EBV lymphomas. To this end, we sought to explore proteomic and phospholipidomic profiles of PS-exposing EVs derived from EBV-transformed lymphomas. Mass spectrometric analysis revealed that several immunomodulatory proteins including integrin αLβ2 and fibroblast growth factor 2 (FGF2) were highly expressed in PS-exposing Akata EVs compared with another EBV strain B95-8-transformed lymphoma-derived counterparts which significantly lack TAM-inducing ability. Pharmacological inhibition of either integrin αLβ2 or FGF2 hampered cytokine induction in monocytic cultured cells elicited by PS-exposing Akata EVs, suggesting the involvement of these proteins in EV-mediated TAM induction in EBV lymphomas. In addition, phospholipids containing precursors of immunomodulatory lipid mediators were also enriched in PS-exposing Akata EVs compared with B95-8 counterparts. Phospholipidomic analysis of fractionated Akata EVs by density gradient centrifugation further demonstrated that PS-exposing Akata EVs might be identical to certain Akata EVs in low density fractions containing exosomes. Therefore, we concluded that a variety of immunomodulatory cargo molecules in a certain EV subtype are presumably conducive to the development of EBV lymphomas.
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Affiliation(s)
- Masatoshi Ito
- Support Center for Medical Research and Education, Tokai University, Isehara, Japan
| | - Kai Kudo
- Department of Hematological Malignancy, Tokai University, Isehara, Japan.,Department of Innovative Medical Science, Institute of Medical Science, Tokai University, Isehara, Japan
| | - Hiroshi Higuchi
- Department of Hematological Malignancy, Tokai University, Isehara, Japan
| | - Hiroko Otsuka
- Department of Hematological Malignancy, Tokai University, Isehara, Japan
| | - Masayuki Tanaka
- Support Center for Medical Research and Education, Tokai University, Isehara, Japan
| | - Nahoko Fukunishi
- Support Center for Medical Research and Education, Tokai University, Isehara, Japan
| | - Takuma Araki
- Support Center for Medical Research and Education, Tokai University, Isehara, Japan
| | - Masako Takamatsu
- Department of Hematological Malignancy, Tokai University, Isehara, Japan.,Department of Innovative Medical Science, Institute of Medical Science, Tokai University, Isehara, Japan
| | - Yoko Ino
- Advanced Medical Research Center, Yokohama City University, Yokohama, Japan
| | - Yayoi Kimura
- Advanced Medical Research Center, Yokohama City University, Yokohama, Japan
| | - Ai Kotani
- Department of Hematological Malignancy, Tokai University, Isehara, Japan.,Department of Innovative Medical Science, Institute of Medical Science, Tokai University, Isehara, Japan.,AMED-PRIME, Japan Agency for Medical Research and Development, Tokyo, Japan
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12
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Hatayama K, Terauchi M, Oshima A, Kakiage H, Ikeda K, Higuchi H. Comparison of Intravenous and Periarticular Administration of Corticosteroids in Total Knee Arthroplasty: A Prospective, Randomized Controlled Study. J Bone Joint Surg Am 2021; 103:319-325. [PMID: 33497075 DOI: 10.2106/jbjs.20.01153] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Corticosteroids are widely used in total knee arthroplasty (TKA) to relieve postoperative pain and prevent postoperative nausea. The aim of this prospective, randomized controlled study was to compare the effects of intravenous and periarticular administration of corticosteroids on pain control, prevention of postoperative nausea, and inflammation and thromboembolism markers following TKA. METHODS One hundred patients undergoing TKA were randomly allocated to either the intravenous administration or periarticular injection group. The intravenous administration group received 10 mg dexamethasone 1 hour before and 24 hours after the surgical procedure, as well as a periarticular injection placebo during the procedure. The periarticular injection group received a 40-mg injection of triamcinolone acetonide during the surgical procedure, as well as an intravenous administration placebo 1 hour before and 24 hours after the procedure. Postoperative pain scores at rest and during walking and nausea scores were recorded according to the 0-to-10 Numerical Rating Scale. Interleukin-6 (IL-6), C-reactive protein (CRP), and prothrombin fragment 1.2 (PF1.2) were measured preoperatively and postoperatively. RESULTS Pain scores at rest and during walking 24 hours postoperatively were significantly lower in the periarticular injection group than in the intravenous administration group. Nausea scores showed no significant difference between groups. IL-6 at 24 and 48 hours postoperatively also showed no significant difference between groups. CRP at 24 and 48 hours postoperatively was significantly lower in the intravenous administration group than in the periarticular injection group. In contrast, CRP at 1 week postoperatively was significantly higher in the intravenous administration group than in the periarticular injection group. The mean PF1.2 was significantly lower in the intravenous administration group than in the periarticular injection group at 4 hours postoperatively. Two cases of deep venous thrombosis in each group were detected with use of ultrasonographic examination. CONCLUSIONS Periarticular injection of corticosteroids showed a better pain-control effect at 24 hours postoperatively than did intravenous administration, whereas the antiemetic effect was similar between treatments. Although intravenous administration had a better anti-thromboembolic effect than periarticular injection, the incidence of deep venous thrombosis was low in both groups. LEVEL OF EVIDENCE Therapeutic Level I. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Kazuhisa Hatayama
- Department of Orthopaedic Surgery, Japan Community Health Care Organization Gunma Central Hospital, Maebashi, Japan
| | - Masanori Terauchi
- Department of Orthopaedic Surgery, Japan Community Health Care Organization Gunma Central Hospital, Maebashi, Japan
| | - Atsufumi Oshima
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Hibiki Kakiage
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Keiko Ikeda
- Department of Orthopaedic Sports Surgery, Asakura Sports Rehabilitation Clinic, Maebashi, Japan
| | - Hiroshi Higuchi
- Department of Orthopaedic Sports Surgery, Asakura Sports Rehabilitation Clinic, Maebashi, Japan
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13
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Takahashi T, Kimura M, Higuchi H, Suzuki K, Yamada Y, Takeshita K. A Histological Comparison Between Anterior Cruciate Ligament Remnant Tissue, Anatomically Reconstructed Graft, and Non-Anatomically Reconstructed Graft. Cureus 2021; 13:e13016. [PMID: 33542886 PMCID: PMC7847778 DOI: 10.7759/cureus.13016] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Introduction: To our knowledge, no studies have investigated the histological comparison between primary injured anterior cruciate ligament (ACL), initially anatomically reconstructed grafts and non-anatomically reconstructed grafts at the time of revision ACL reconstruction. The purpose of this study was to histologically clarify the differences between ACL remnant tissue, reconstructed graft after anatomic double-bundle ACL reconstruction, and reconstructed graft after non-anatomic single-bundle ACL reconstruction. Methods: This histological study included five patients after anatomic double-bundle ACL reconstruction, three patients after non-anatomic single-bundle ACL reconstruction performed who injured their operated knees again, and five patients who injured their ACL for the first time and agreed to participate. All of the grafts and ACL remnant tissue were harvested, stained with hematoxylin and eosin, S-100, and alpha smooth muscle actin and evaluated using light microscopy. Results: There was no area of necrosis in the reconstructed graft after an anatomic double-bundle ACL reconstruction. However, there were obvious areas of necrosis in the reconstructed graft after non-anatomic single-bundle ACL reconstruction. Additionally, the collagen fibers were more longitudinally oriented, and most cells were spindle shaped like those in ACL remnant tissue after an anatomic double-bundle ACL reconstruction in contrast with the finding of the grafts after non-anatomic single-bundle ACL reconstruction. Conclusion: Initially reconstructed graft after an anatomic double-bundle ACL reconstruction may be beneficial if preserved at the time of the revision surgery.
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Affiliation(s)
| | | | - Hiroshi Higuchi
- Orthopaedic Surgery, Asakura Sports Rehabilitation Clinic, Maebashi, JPN
| | - Kosuke Suzuki
- Orthopaedic Surgery, Zenshukai Hospital, Maebashi, JPN
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14
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Abstract
Background Although the biomechanical importance of the ramp lesion in the anterior cruciate ligament (ACL)-deficient knee has been demonstrated, there is no clear consensus on the appropriate treatment for ramp lesions during ACL reconstruction. Purpose To compare the postoperative outcomes for ramp lesions between patients treated with all-inside repair through the posteromedial portal and those whose ramp lesions were left in situ without repair during ACL reconstruction. We also determined whether ramp lesion healing status affected postoperative knee stability. Study Design Cohort study; Level of evidence, 3. Methods A total of 57 patients who underwent anatomic double-bundle ACL reconstruction between August 2011 and December 2017 had attendant ramp lesions. Of these, 25 ramp lesions that were considered stable were left in situ without repair (Nonrepaired group), and 25 ramp lesions, including 21 stable and 4 unstable lesions, were treated using all-inside repair through the posteromedial portal (Repaired group). We evaluated the side-to-side difference (SSD) in anterior tibial translation on stress radiographs and rotational stability by using the pivot-shift test 2 years after surgery, and healing status of the ramp lesions was evaluated on 3.0-T magnetic resonance imaging (MRI) scans 1 year after surgery. Results The mean SSDs in anterior translation were 2.4 ± 1.6 mm for the Nonrepaired group and 1.9 ± 1.6 mm for the Repaired group, with no significant differences. The positive ratios on the pivot-shift test were not significantly different between groups. Healing rates of ramp lesions on MRI scans showed a significant difference between the Nonrepaired group (60%) and the Repaired group (100%) (P = .001). The mean SSDs for knees in which the ramp lesion had healed as shown on MRI scans and those in which it had not healed were 1.9 ± 1.6 mm and 3.2 ± 1.1 mm, respectively, which was a significant difference (P = .02). Conclusion Healing rates of ramp lesions were significantly better in the Repaired group than in the Nonrepaired group, although postoperative knee stability was not significantly different between groups. Anterior laxity in the knees in which the ramp lesion was unhealed was significantly greater compared with the knees in which the ramp lesion healed. All-inside repair through the posteromedial portal was a reliable surgical procedure to heal ramp lesions.
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Affiliation(s)
- Kazuhisa Hatayama
- Department of Orthopaedic Surgery, Japan Community Health Care Organization Gunma Central Hospital, Maebashi, Japan
| | - Masanori Terauchi
- Department of Orthopaedic Surgery, Japan Community Health Care Organization Gunma Central Hospital, Maebashi, Japan
| | - Kenichi Saito
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Ryota Takase
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Hiroshi Higuchi
- Department of Orthopaedic Sports Surgery, Asakura Sports Rehabilitation Clinic, Maebashi, Japan
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15
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Kotaki R, Kawashima M, Yamamoto Y, Higuchi H, Nagashima E, Kurosaki N, Takamatsu M, Kikuti YY, Imadome KI, Nakamura N, Kotani A. Dasatinib exacerbates splenomegaly of mice inoculated with Epstein-Barr virus-infected lymphoblastoid cell lines. Sci Rep 2020; 10:4355. [PMID: 32152351 PMCID: PMC7062761 DOI: 10.1038/s41598-020-61300-y] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 02/17/2020] [Indexed: 12/25/2022] Open
Abstract
Latent infection of Epstein-Barr virus (EBV) is associated with a poor prognosis in patients with B cell malignancy. We examined whether dasatinib, a multi kinase inhibitor, which is broadly used for chronic myeloid leukemia and Philadelphia chromosome-positive acute lymphoblastic leukemia is effective on EBV-positive B cell malignancies, using lymphoblastoid cell lines (LCLs) in vitro and in vivo. As a result, in vitro experiments showed that dasatinib induced cell death of the EBV-LCLs which was not accompanied with a lytic reactivation of EBVs. To evaluate the effectiveness in EBV latency type III represented by immunodeficiency lymphoma, LCL-inoculated immunodeficient NOD/shi-scid/Il2rgnul (NOG) mice were treated with dasatinib. However, in vivo experiments revealed that dasatinib treatment exacerbated tumor cell infiltration into the spleen of LCL-inoculated NOG mice, whereas tumor size at the inoculated site was not affected by the treatment. These results suggest that dasatinib exacerbates the pathogenesis at least in some situations although the drug is effective in vitro. Hence, we should carefully examine a possibility of dasatinib repositioning for EBV+ B cell malignancies.
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Affiliation(s)
- Ryutaro Kotaki
- Department of Hematological Malignancy, Institute of Medical Science, Tokai University, Shimokasuya 143, Isehara, Kanagawa, Japan
| | - Masaharu Kawashima
- Department of Hematological Malignancy, Institute of Medical Science, Tokai University, Shimokasuya 143, Isehara, Kanagawa, Japan.,Division of Clinical Oncology and Hematology, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - Yuichiro Yamamoto
- Department of Hematological Malignancy, Institute of Medical Science, Tokai University, Shimokasuya 143, Isehara, Kanagawa, Japan
| | - Hiroshi Higuchi
- Department of Hematological Malignancy, Institute of Medical Science, Tokai University, Shimokasuya 143, Isehara, Kanagawa, Japan.,Research Institute of Science and Technology, Tokai University, 4-1-1 Kitakinme, Hiratsuka, Kanagawa, Japan
| | - Etsuko Nagashima
- Department of Hematological Malignancy, Institute of Medical Science, Tokai University, Shimokasuya 143, Isehara, Kanagawa, Japan
| | - Natsumi Kurosaki
- Department of Hematological Malignancy, Institute of Medical Science, Tokai University, Shimokasuya 143, Isehara, Kanagawa, Japan
| | - Masako Takamatsu
- Department of Hematological Malignancy, Institute of Medical Science, Tokai University, Shimokasuya 143, Isehara, Kanagawa, Japan
| | - Yara Yukie Kikuti
- Department of Pathology, Tokai University School of Medicine, Shimokasuya 143, Isehara, Kanagawa, Japan
| | - Ken-Ichi Imadome
- Department of Infectious Diseases, National Center for Child Health and Development, Setagaya-ku, Tokyo, Japan
| | - Naoya Nakamura
- Department of Pathology, Tokai University School of Medicine, Shimokasuya 143, Isehara, Kanagawa, Japan
| | - Ai Kotani
- Department of Hematological Malignancy, Institute of Medical Science, Tokai University, Shimokasuya 143, Isehara, Kanagawa, Japan. .,Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency, Saitama, Japan. .,AMED-PRIME, Japan Agency for Medical Research and Development, Tokyo, Japan.
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16
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Fukumori R, Oba M, Izumi K, Otsuka M, Suzuki K, Gondaira S, Higuchi H, Oikawa S. Effects of butyrate supplementation on blood glucagon-like peptide-2 concentration and gastrointestinal functions of lactating dairy cows fed diets differing in starch content. J Dairy Sci 2020; 103:3656-3667. [PMID: 32089297 DOI: 10.3168/jds.2019-17677] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 12/18/2019] [Indexed: 01/09/2023]
Abstract
The objective of this study was to evaluate effects of butyrate supplementation on plasma concentration of glucagon-like peptide-2 (GLP-2), apparent total-tract digestibility, and responses to a grain challenge of lactating dairy cows fed diets differing in starch content. Eight Holstein cows averaging 58.6 ± 9.96 d in milk (4 primiparous cows fitted with rumen cannula and 4 multiparous intact cows) were blocked by parity and assigned to one of two 4 × 4 Latin squares balanced for carryover effects with a 2 × 2 factorial arrangement of treatments. Treatments were dietary starch content [20.6 vs. 27.5%, respectively, for low starch (LS) and high starch (HS)] and butyrate supplementation (butyrate vs. control) with 21-d periods. Butyrate was provided as Gustor BP70 WS (Norel, S.A., Madrid, Spain), containing 70% sodium butyrate and 30% fatty acid mixture, at 2% of dietary dry matter (providing butyrate at 1.1% of dietary dry matter), and control premix contained 70% wheat bran and 30% fatty acid mixture. Feeds, orts, and fecal samples were collected from d 17 to 19 to determine apparent total-tract nutrient digestibility. Blood and rumen fluid samples were collected on d 19. The baseline of dry matter intake (DMI) was determined as average DMI from d 17 to 19 for each cow, and cows were feed-restricted at 60% of the baseline DMI on d 20, and a grain challenge was conducted by providing steam-flaked corn grain at 0.6% of body weight, on an as-fed basis, in addition to each treatment diet on d 21, and blood and ruminal fluid samples were collected. The interaction of dietary starch content by butyrate supplementation was significant for plasma GLP-2 concentration, being greater for cows fed butyrate with the HS diet than those fed the other 3 diets. Cows fed butyrate increased n-butyrate concentration in the ruminal fluid and tended to increase dry matter and organic matter digestibility compared with the control. During the grain challenge, rumen endotoxin concentration increased over time and was higher for cows fed the HS diets compared with those fed LS diets. However, response variables related to inflammation were not affected by the grain challenge. However, serum haptoglobin, lipopolysaccharide-binding protein, and serum amyloid-A concentrations were greater for cows fed butyrate with the LS diet, but not for those fed the HS diet. These results indicate that butyrate supplementation may increase plasma GLP-2 concentration for cows fed HS diets, and total-tract digestibility regardless of dietary starch content. However, butyrate supplementation did not mitigate inflammation in this study.
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Affiliation(s)
- R Fukumori
- Department of Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan 069-8501
| | - M Oba
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada T6G 2P5.
| | - K Izumi
- Department of Sustainable Agriculture, College of Agriculture, Food and Environment Sciences, Rakuno Gakuen University, Ebetsu, Japan 069-8501
| | - M Otsuka
- Department of Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan 069-8501
| | - K Suzuki
- Department of Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan 069-8501
| | - S Gondaira
- Department of Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan 069-8501
| | - H Higuchi
- Department of Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan 069-8501
| | - S Oikawa
- Department of Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan 069-8501
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Tanaka M, Araki K, Higuchi H, Fukuoka-Araki K, Horikoshi Y, Hataya H. Pediatric acute dacryocystitis due to Eikenella corrodens: A case report. J Infect Chemother 2020; 26:510-512. [PMID: 31982291 DOI: 10.1016/j.jiac.2019.12.014] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/17/2019] [Accepted: 12/18/2019] [Indexed: 10/25/2022]
Abstract
Eikenella corrodens is a facultatively anaerobic gram-negative rod bacterium in the oropharynx and respiratory tract. It is a member of HACEK (Haemophilus spp., Aggregatibacter spp., Cardiobacterium hominis, E. corrodens, and Kingella kingae) group commonly associated with endocarditis and craniofacial infections. It is usually susceptible to penicillin, second and third-generation cephalosporins, and carbapenem, but has variable susceptibility to first-generation cephalosporin. We herein provide a description of the first case of pediatric acute dacryocystitis caused by E. corrodens. The patient did not respond to oral cephalexin and required surgical drainage followed by intravenous cefotaxime. Also provided is a brief review of the current literature.
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Affiliation(s)
- Miki Tanaka
- Department of General Pediatrics, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan.
| | - Kotaro Araki
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan; Division of Immunology, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Hiroshi Higuchi
- Department of Laboratory, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Kahoru Fukuoka-Araki
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan; Division of Immunology, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Yuho Horikoshi
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan; Division of Immunology, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Hiroshi Hataya
- Department of General Pediatrics, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
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18
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Kotani A, Higuchi H, Kakizaki M. [Exosomes in the hematopoietic system]. Rinsho Ketsueki 2019; 60:1070-1074. [PMID: 31597829 DOI: 10.11406/rinketsu.60.1070] [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] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The secretion of extracellular vesicles (EVs) from cells has been observed. Recently, because EVs were found to contain functional molecules such as micro RNAs (miRNAs) and possess the ability to transfer them to other cells, its functions were expanded as an "intracellular communicator." The exosome is one such EV that has been extensively investigated, particularly in cancer research because cancer cells abundantly secrete exosomes, suggesting their potential as promising diagnostic markers. Research on exosomes in the hematopoietic system has just begun. We recently reported that the exosome secreted from the EBV-infected lymphoma cells has critical functions in lymphomagenesis and maintenance. Moreover, EVs in HBV infection are now being investigated to generalize their functions.
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Affiliation(s)
- Ai Kotani
- Institute of Medical Science, Tokai University
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19
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Tateyama H, Murase Y, Higuchi H, Inasaka Y, Kaneoka H, Iijima S, Nishijima KI. Siglec-F is induced by granulocyte-macrophage colony-stimulating factor and enhances interleukin-4-induced expression of arginase-1 in mouse macrophages. Immunology 2019; 158:340-352. [PMID: 31520477 DOI: 10.1111/imm.13121] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [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: 02/12/2019] [Revised: 09/09/2019] [Accepted: 09/10/2019] [Indexed: 12/11/2022] Open
Abstract
Siglecs are cell surface lectins that recognize sialic acids and are primarily expressed in hematopoietic cells. Previous studies showed that some Siglecs regulate macrophage function. In the present study, we examined the induction and putative roles of mouse Siglec-F in bone-marrow-derived macrophages in mice. A quantitative RT-PCR analysis showed that the basal expression of Siglec-F was weak in bone-marrow-derived macrophages differentiated by macrophage colony-stimulating factor. However, a 24-hr stimulation with granulocyte-macrophage colony-stimulating factor (GM-CSF) enhanced Siglec-F expression. GM-CSF also enhanced Siglec-F expression in thioglycollate-induced peritoneal macrophages. The inhibition of signal transducer and activator of transcription 5 (STAT5), but not that of phosphoinositide 3-kinase or mitogen-activated protein kinase kinase, significantly reduced the induction of Siglec-F. Interleukin-3, which uses a common β-chain shared with the GM-CSF receptor to stimulate the STAT5 pathway, also enhanced Siglec-F expression. The knockdown of Siglec-F by a specific small interfering RNA enhanced GM-CSF-induced STAT5 phosphorylation, suggesting that Siglec-F down-regulates its own expression upon prolonged GM-CSF stimulation. Furthermore, the knockdown of Siglec-F reduced the STAT6 phosphorylation and expression of arginase-1 in interleukin-4-stimulated macrophages. These results suggest that Siglec-F fine-tunes the immune responses of macrophages.
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Affiliation(s)
- Hiroyuki Tateyama
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan
| | - Yusuke Murase
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan
| | - Hiroshi Higuchi
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan
| | - Yui Inasaka
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan
| | - Hidenori Kaneoka
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan
| | - Shinji Iijima
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan
| | - Ken-Ichi Nishijima
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan
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20
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Araki K, Fukuoka K, Higuchi H, Aizawa Y, Horikoshi Y. Cefmetazole for extended-spectrum β-lactamase-producing Enterobacteriaceae in pediatric pyelonephritis. Pediatr Int 2019; 61:572-577. [PMID: 30908807 DOI: 10.1111/ped.13847] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 02/18/2019] [Accepted: 03/20/2019] [Indexed: 11/29/2022]
Abstract
BACKGROUND Pyelonephritis caused by extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae is an urgent problem in pediatrics. Although carbapenem is the standard therapy for infections caused by ESBL-producing Enterobacteriaceae, some cephamycins, including cefmetazole, are stable against hydrolysis by ESBL. There are few reports, however, on the use of cefmetazole in children. The aim of this study was to evaluate the therapeutic effect of cefmetazole in pediatric pyelonephritis caused by ESBL-producing Enterobacteriaceae. METHODS Children with pyelonephritis caused by ESBL-producing Enterobacteriaceae were enrolled between April 2010 and November 2016 at Tokyo Metropolitan Children's Medical Center. Presence of ESBL was tested for using the disk diffusion method. Medical records were reviewed for a past history of bacterial infection. The outcomes were clinical cure rate at 4 weeks and the duration of therapy in the cefmetazole and non-cefmetazole groups. RESULTS Fifty-five patients met the criteria for pyelonephritis caused by ESBL-producing Enterobacteriaceae. The most common causative organisms were Escherichia coli (n = 51; 92.7%), Klebsiella pneumoniae (n = 3; 5.5%), and K. oxytoca (n = 1; 1.8%). Thirty-six and 19 patients were treated with cefmetazole and with other antibiotics as definitive therapy, respectively. There was no difference in the clinical cure rate (86.1% vs 89.5%; P = 0.72) or duration of therapy (median, 7.0 vs 7.0 days; P = 0.73) between the cefmetazole and non-cefmetazole groups. CONCLUSIONS Cefmetazole was not inferior to the other antibiotics in the treatment of pyelonephritis caused by ESBL-producing Enterobacteriaceae in children. Cefmetazole is a valuable therapeutic alternative to carbapenems for treating pyelonephritis caused by ESBL-producing Enterobacteriaceae.
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Affiliation(s)
- Kotaro Araki
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Kahoru Fukuoka
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Hiroshi Higuchi
- Division of Microbiology, Department of Laboratory, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Yuta Aizawa
- Department of Pediatrics, Niigata University, Niigata City, Japan
| | - Yuho Horikoshi
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
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21
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Hirose T, Iwami D, Hotta K, Sasaki H, Higuchi H, Shinohara N. Percentage of CD19 + Cells in Peripheral Blood Lymphocytes After Rituximab-Based Desensitization as a Predictor of Acute Antibody-Mediated Rejection in ABO-Incompatible Kidney Transplantation. Transplant Proc 2019; 51:1382-1386. [PMID: 31027828 DOI: 10.1016/j.transproceed.2019.01.127] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 01/03/2019] [Indexed: 02/02/2023]
Abstract
BACKGROUND Rituximab (RIT) is effective as a part of the desensitization therapy before ABO-incompatible kidney transplantation (ABOi-KTx), and a single dose of RIT at 375 mg/m2 or less is recommended. However, adequate RIT dose recommendations have not yet been established for individual recipients. Therefore, we evaluated the relationship between the proportion of B cells in peripheral blood and acute antibody-mediated rejection (AAMR). METHODS Forty-four consecutive ABOi-KTx recipients were enrolled in this retrospective study. Before transplantation, subjects were treated with RIT at various doses, ranging from 65 to 400 mg/body (46-263 mg/m2), followed by plasmapheresis and intravenous immunoglobulin as a desensitization therapy. The percentage of CD19+ cells in the total peripheral blood lymphocytes population (%CD19) was determined the day before transplantation. Transplant recipients were divided into 2 groups according to pretransplant %CD19, as follows: low %CD19 group, ≤ 1.2% (n = 35) and high %CD19 group, > 1.2% (n = 9). The relationship between %CD19 and incidence of AAMR was evaluated, and the predicting factors for AAMR incidence were determined by univariate and multivariate analyses. RESULTS The incidence of AAMR was significantly higher in the high %CD19 group than in the low %CD19 group (44.4% vs 5.7%, P = .006). Furthermore, multivariate analysis showed that %CD19 > 1.2% was the only independent factor to predict AAMR, with an odds ratio of 14.31 (P = .038). CONCLUSION High %CD19 values after rituximab administration in ABOi-KTx recipients implies insufficient depletion of B cells, which can lead to AAMR.
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Affiliation(s)
- T Hirose
- Department of Renal and Genitourinary Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - D Iwami
- Department of Renal and Genitourinary Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, Japan.
| | - K Hotta
- Department of Renal and Genitourinary Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - H Sasaki
- Department of Renal and Genitourinary Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - H Higuchi
- Department of Renal and Genitourinary Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - N Shinohara
- Department of Renal and Genitourinary Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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22
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Higuchi H, Fujii H, Taniguchi A, Watanabe M, Yamashita A, Asama H. 3D Measurement of Large Structure by Multiple Cameras and a Ring Laser. JRM 2019. [DOI: 10.20965/jrm.2019.p0251] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This paper presents an effective mobile three-dimensional (3D) measurement system that can obtain measurements from the inside of large structures such as railway vehicles, elevators, and escalators. In the proposed method, images are acquired by moving measurement equipment composed of a ring laser and two cameras. From the acquired images, accurate cross-sectional shapes, which are obtained via a light-section method by each camera, are integrated into a unified coordinate system using pose estimation based on bundle adjustment. We focus on the method of separately extracting the information necessary for the two processes – the light-section method and pose estimation – from the acquired images. The laser areas used for the light-section method are detected by a bandpass color filter. Further, a new block matching technique is introduced to eliminate the influence of the laser light, which causes incorrect detection of corresponding points. Through an experiment, we confirm the validity of the proposed 3D measurement method.
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Nagamura N, Higuchi H. Segmental Arterial Mediolysis with Preceding Symptoms Resembling Viral Infection Hampers the Differentiation from Polyarteritis Nodosa. Intern Med 2019; 58:2721-2726. [PMID: 31527370 PMCID: PMC6794176 DOI: 10.2169/internalmedicine.2487-18] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
A middle-aged man presented with a fever, arthralgia, gastrointestinal symptoms, headache, and rash. After two weeks, the patient suddenly complained of severe abdominal pain, and computed tomography revealed aneurysms in the hepatic and splenic arteries, which increased in size progressively. Given the elevated levels of inflammatory markers and orchitis, polyarteritis nodosa (PN) was initially suspected. Catheter embolization for the ruptured hepatic aneurysm and splenectomy for the large splenic ones were performed, and the pathological finding was consistent with segmental arterial mediolysis (SAM). Changes in inflammatory marker levels and aneurysmal size are also informative to differentiate SAM from PN.
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Affiliation(s)
- Norihiro Nagamura
- Department of Rheumatology and Allergology, Shimane Prefectural Central Hospital, Japan
| | - Hiroshi Higuchi
- Department of General Medicine, Shimane Prefectural Central Hospital, Japan
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24
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Aizawa Y, Suwa J, Higuchi H, Fukuoka K, Furuichi M, Kaneko T, Morikawa Y, Okazaki K, Shimizu N, Horikoshi Y. Antimicrobial Stewardship Program in a Pediatric Intensive Care Unit. J Pediatric Infect Dis Soc 2018; 7:e156-e159. [PMID: 29688433 DOI: 10.1093/jpids/piy031] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 03/19/2018] [Indexed: 11/14/2022]
Abstract
We conducted an antimicrobial stewardship program in a pediatric intensive care unit. An interrupted time-series analysis revealed a significant reduction in level and trend of days of therapy per 1000 patient-days for antipseudomonal agents. No increase in adverse patient outcomes was found.
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Affiliation(s)
- Yuta Aizawa
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Japan
| | - Junichi Suwa
- Department of Pharmacy, Tokyo Metropolitan Children's Medical Center, Japan
| | - Hiroshi Higuchi
- Division of Microbiology, Department of Laboratory, Tokyo Metropolitan Children's Medical Center, Japan
| | - Kahoru Fukuoka
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Japan
| | - Mihoko Furuichi
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Japan
| | - Tetsuji Kaneko
- Clinical Research Support Center, Tokyo Metropolitan Children's Medical Center, Japan
| | - Yoshihiko Morikawa
- Clinical Research Support Center, Tokyo Metropolitan Children's Medical Center, Japan
| | - Kaoru Okazaki
- Division of Neonatology, Tokyo Metropolitan Children's Medical Center, Japan
| | - Naoki Shimizu
- Division of Pediatric Critical Care Medicine, Department of Pediatric Emergency and Critical Care Medicine, Tokyo Metropolitan Children's Medical Center, Japan
| | - Yuho Horikoshi
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Japan
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Hatayama K, Terauchi M, Hashimoto S, Saito K, Higuchi H. Factors Associated With Posterior Cruciate Ligament Tightness During Cruciate-Retaining Total Knee Arthroplasty. J Arthroplasty 2018; 33:1389-1393. [PMID: 29352685 DOI: 10.1016/j.arth.2017.12.026] [Citation(s) in RCA: 6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 11/27/2017] [Accepted: 12/19/2017] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND The purpose of our study was to identify factors affecting posterior cruciate ligament (PCL) tightness during cruciate-retaining total knee arthroplasty. METHODS A total of 225 varus osteoarthritic knees that underwent cruciate-retaining total knee arthroplasty were included in this study. When the flexion gap was tighter than the extension gap after all bone resection and the lift-off sign was positive during surgery, the PCL was released. The association between PCL release and potential risk factors, such as age, gender, body mass index, preoperative range of motion, anterior cruciate ligament status, preoperative hip-knee-ankle angle (HKA), decrease in posterior condylar offset, and also change in tibial posterior slope angle (TPSA) from preoperative to postoperative measurement, was evaluated by univariate and multivariate logistic regression analyses. RESULTS The PCL was released in 68 of 225 knees (30.2%). According to the univariate logistic regression analysis, preoperative knee flexion angle (odds ratio [OR], 0.98), anterior cruciate ligament status (OR, 3.94), the decrease in medial (OR, 0.73) and lateral posterior condylar offset (OR, 0.76), preoperative HKA (OR, 1.1), preoperative (OR, 1.15) and postoperative TPSA (OR, 0.77), and the decrease in TPSA (OR, 1.23) were associated with PCL release. Multivariable stepwise logistic regression analysis demonstrated that preoperative HKA (P < .001), postoperative TPSA (P = .02), and the decrease in TPSA (P < .001) were independently associated with PCL release. CONCLUSION Many factors are associated with PCL tightness. The change in TPSA between preoperative and postoperative measurements was a higher risk factor than postoperative TPSA.
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Affiliation(s)
- Kazuhisa Hatayama
- Department of Orthopaedic Surgery, Japan Community Health Care Organization Gunma Central Hospital, Maebashi, Gunma, Japan
| | - Masanori Terauchi
- Department of Orthopaedic Surgery, Japan Community Health Care Organization Gunma Central Hospital, Maebashi, Gunma, Japan
| | - Shogo Hashimoto
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Kenichi Saito
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Hiroshi Higuchi
- Department of Orthopaedic Sports Surgery, Asakura Sports Rehabilitation Clinic, Maebashi, Gunma, Japan
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26
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Hatayama K, Terauchi M, Saito K, Aoki J, Nonaka S, Higuchi H. Magnetic Resonance Imaging Diagnosis of Medial Meniscal Ramp Lesions in Patients With Anterior Cruciate Ligament Injuries. Arthroscopy 2018; 34:1631-1637. [PMID: 29456068 DOI: 10.1016/j.arthro.2017.12.022] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 11/03/2017] [Accepted: 12/04/2017] [Indexed: 02/02/2023]
Abstract
PURPOSE To prospectively evaluate the sensitivity and specificity of magnetic resonance imaging (MRI) for diagnosing ramp lesions, to compare them between 1.5- and 3-T MRI, and to evaluate whether bone contusion of the posterior lip of the medial tibial plateau was associated with ramp lesions. METHODS For 155 knees that underwent primary ACL reconstruction, we prospectively examined for ramp lesions and medial meniscal body tears on MRI. MRI diagnosis of ramp lesions required high signal irregularity of the capsular margin or separation in the meniscocapsular junction of the medial meniscus posterior horn on sagittal images. Bone contusion of the posterior lip of the medial tibial plateau was verified in 105 knees with MRI performed within 6 weeks after injury. All ramp lesions were identified by transcondylar observation during surgery. The sensitivity and specificity of MRI for ramp lesions and body tears were measured. Furthermore, we evaluated whether bone contusion of the medial tibial plateau was associated with ramp lesions. The χ-square test was used for statistical analysis. RESULTS During surgery, ramp lesions were observed in 46 knees and medial meniscal body tears were seen in 35 knees. The sensitivity of MRI for ramp lesions was 71.7% and specificity was 90.5%. The sensitivity for ramp lesions was significantly lower than that for meniscal body tears (94.3%) (P = .01). The sensitivity of 3-T MRI (83.3%) was superior to that of 1.5-T MRI (67.6%), but not significantly different. The incidence of bone contusions was not significantly different among ramp lesions (38.5%), body tears (40.0%), or no tears (30.5%). CONCLUSIONS The sensitivity of MRI for diagnosing ramp lesions was significantly lower than that for medial meniscal body tears. Bone contusion of the posterior lip of the medial tibial plateau on MRI was not associated with ramp lesions. LEVEL OF EVIDENCE Level III, comparative trial.
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Affiliation(s)
- Kazuhisa Hatayama
- Department of Orthopaedic Surgery, Japan Community Health Care Organization Gunma Central Hospital, Maebashi, Gunma, Japan.
| | - Masanori Terauchi
- Department of Orthopaedic Surgery, Japan Community Health Care Organization Gunma Central Hospital, Maebashi, Gunma, Japan
| | - Kenichi Saito
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Jun Aoki
- Department of Radiology, Japan Community Health Care Organization Gunma Central Hospital, Maebashi, Gunma, Japan
| | - Satoshi Nonaka
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Hiroshi Higuchi
- Department of Orthopaedic Sports Surgery, Asakura Sports Rehabilitation Clinic, Maebashi, Gunma, Japan
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Higuchi H, Maeda S, Ishii-Maruhama M, Honda-Wakasugi Y, Yabuki-Kawase A, Miyawaki T. Intellectual disability is a risk factor for delayed emergence from total intravenous anaesthesia. J Intellect Disabil Res 2018; 62:217-224. [PMID: 29193472 DOI: 10.1111/jir.12448] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 09/28/2017] [Accepted: 10/17/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Previous studies have suggested that ID influences the depth of general anaesthesia (GA) and delays emergence from GA. In this retrospective cohort study, we investigated whether ID affects the time taken to emerge from GA. METHODS We selected dental patients who underwent GA at the Department of Dental Anaesthesiology, Okayama University Hospital, using predefined inclusion and exclusion criteria, before dividing the selected participants into ID and non-ID (control) groups. Relevant data were collected from electronic anaesthesia records. Emergence time, the time from the discontinuation of propofol and remifentanil to tracheal extubation, was recorded for each patient. We compared the data of the ID group and control group. The association between ID and the emergence time was tested for statistical significance. Multivariate linear regression analysis was used to control for confounders. RESULTS A total of 97 cases (control = 50, ID = 47) were included in the study. The emergence time was significantly longer in the ID group (ID group: 15.8 ± 6.6 min, control group: 10.8 ± 3.6 min). The ID group included more men and lower propofol and remifentanil infusion rates. The treatment time was longer, and the mean bispectral index was lower in the ID group. Sevoflurane inhalation was used only for anaesthesia induction in the ID group. In the multivariate linear regression analysis, ID was found to be significantly associated with a longer emergence time. CONCLUSION Our results suggest that ID is associated with a longer emergence time from GA.
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Affiliation(s)
- H Higuchi
- Department of Dental Anaesthesiology, Okayama University Hospital, Okayama, Japan
| | - S Maeda
- Department of Dental Anaesthesiology, Okayama University Hospital, Okayama, Japan
| | - M Ishii-Maruhama
- Department of Dental Anaesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Y Honda-Wakasugi
- Department of Dental Anaesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - A Yabuki-Kawase
- Center for Promotion of Dental Education and International Collaboration, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - T Miyawaki
- Department of Dental Anaesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Horikoshi Y, Okazaki K, Miyokawa S, Kinoshita K, Higuchi H, Suwa J, Aizawa Y, Fukuoka K. Sibling visits and viral infection in the neonatal intensive care unit. Pediatr Int 2018; 60:153-156. [PMID: 29205682 DOI: 10.1111/ped.13470] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [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: 08/03/2017] [Revised: 09/14/2017] [Accepted: 11/30/2017] [Indexed: 01/04/2023]
Abstract
BACKGROUND Sibling visits to the neonatal intensive care unit (NICU) are a part of family-centered care, which is now being increasingly endorsed as a positive development in patient care. Sibling visits, however, pose a risk of viral infection, and hence many NICU in Japan impose strict limits on the practice. The aim of this study was therefore to assess whether sibling visits to the NICU are related to an increase in the nosocomial viral infection rate. METHODS This retrospective study was conducted between April 2012 and March 2017 at Tokyo Metropolitan Children's Medical Center in Japan. Sibling visits were implemented after screening for symptoms of viral illness. Symptomatic patients in the NICU were tested for common viruses on rapid antigen test and polymerase chain reaction. The number of sibling visits and the rate of nosocomial viral infections were examined on Spearman's correlation test. RESULTS The total number of sibling visits and rate of nosocomial viral infection in the NICU was 102 and 0.068 per 1,000 patient-days during the study period, respectively. The number of enterovirus, respiratory syncytial virus, human metapneumovirus, influenza virus A, and Herpes simplex virus infections was 3, 2, 1, 1, 1, and 1, respectively. No infections were identified after sibling visits. The number of sibling visits and the rate of nosocomial viral infections were not correlated (correlation coefficient, -0.1; P = 0.873). CONCLUSION Sibling visits to the NICU did not result in an increase in the nosocomial viral infection rate.
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Affiliation(s)
- Yuho Horikoshi
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Fuchu, Tokyo, Japan
| | - Kaoru Okazaki
- Division of Neonatology, Tokyo Metropolitan Children's Medical Center, Fuchu, Tokyo, Japan
| | - Shigeko Miyokawa
- Department of Nursing, Tokyo Metropolitan Children's Medical Center, Fuchu, Tokyo, Japan
| | - Kazue Kinoshita
- Division of Molecular Laboratory, Tokyo Metropolitan Children's Medical Center, Fuchu, Tokyo, Japan
| | - Hiroshi Higuchi
- Division of Microbiology, Department of Laboratory, Tokyo Metropolitan Children's Medical Center, Fuchu, Tokyo, Japan
| | - Junichi Suwa
- Department of Pharmacy, Tokyo Metropolitan Children's Medical Center, Fuchu, Tokyo, Japan
| | - Yuta Aizawa
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Fuchu, Tokyo, Japan
| | - Kahoru Fukuoka
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Fuchu, Tokyo, Japan
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Murai T, Higuchi H, Suwa J, Funakoshi H, Yoneda R, Ishii S, Araki K, Fukuoka K, Aizawa Y, Horikoshi Y. Evaluation of early achievement of an AUC/MIC of >400 for Vancomycin in children with methicillin-resistant Staphylococcus aureus bacteremia. Open Forum Infect Dis 2017. [DOI: 10.1093/ofid/ofx163.672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Methicillin-resistant Staphylococcus aureus (MRSA) bacteremia causes morbidity and mortality in children. The standard treatment for MRSA bacteremia is vancomycin, which should achieve a 24 hour area under the curve over the minimum inhibitory concentration ratio (AUC/ MIC) of >400. Whether or not attaining AUC/ MIC >400 early in the disease course improves outcomes in children is controversial. The aim of our study was to determine whether early achievement of AUC/ MIC >400 improved outcomes in children with MRSA bacteremia.
Methods
Children whose blood culture grew MRSA between March 2010 and April 2017 at Tokyo Metropolitan Children’s Medical Center were enrolled. The exclusion criteria were no vancomycin administration, use of extracorporeal membrane oxygenation, no data on dosage and vancomycin MIC, and cases of contamination. Susceptibility testing was performed by a microdilution method. The outcomes of patients who achieved an AUC/MIC >400 at the first assessment prior to the Fourth or Fifth vancomycin dose were compared with those of patients who did not. The clinical outcomes were persistent bacteremia on Days 3 and 7, mortality at 30 days, and the recurrence of MRSA bacteremia.
Results
In total 175 MRSA isolates from 50 children were identified. Of these 56 episodes were eligible for enrollment. Forty-one subjects (73.2%) were boys. The median age was 9 months (interquartile range: 1.8–120.5 months). The median initial dose of vancomycin was 40 mg/kg (interquartile range: 30–44.3 mg/kg). Among MRSA isolates, vancomycin MIC of < 0.5 mcg/mL, 1 mcg/mL and 2 mcg/mL were 1 (1.8%), 53 (94.6%) and 2 (3.6%), respectively. Fifteen patients (26.8%) achieved AUC/MIC >400 early. The two groups did not differ significantly in terms of persistent bacteremia on Days 3 (P = 0.96) or 7 (P = 0.82), mortality at 30 days (P = 0.47), or the recurrence of MRSA bacteremia (P = 1.0).
Conclusion
Children with bacteremia who achieved AUC/ MIC>400 early did not differ significantly from children who did not in terms of their clinical outcomes.
Disclosures
All authors: No reported disclosures.
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Affiliation(s)
- Takemi Murai
- Infectious Diseases, Tokyo Metropolitan Children’s Medical Center, Tokyo, Japan
| | - Hiroshi Higuchi
- Microbiology, Tokyo Metropolitan Children’ s Medical Center, Tokyo, Japan
| | - Junichi Suwa
- Pharmacy, Tokyo Metropolitan Children’ s Medical Center, Tokyo, Japan
| | - Hanako Funakoshi
- Infectious Diseases, Tokyo Metropolitan Children’s Medical Center, Tokyo, Japan
| | - Ryuu Yoneda
- Infectious Diseases, Tokyo Metropolitan Children’s Medical Center, Tokyo, Japan
| | - Sho Ishii
- Infectious Diseases, Tokyo Metropolitan Children’s Medical Center, Tokyo, Japan
| | - Kotaro Araki
- Infectious Diseases, Tokyo Metropolitan Children’s Medical Center, Tokyo, Japan
| | - Kahoru Fukuoka
- Infectious Diseases, Tokyo Metropolitan Children’s Medical Center, Tokyo, Japan
| | - Yuta Aizawa
- Infectious Diseases, Tokyo Metropolitan Children’s Medical Center, Tokyo, Japan
| | - Yuho Horikoshi
- Infectious Diseases, Tokyo Metropolitan Children’s Medical Center, Tokyo, Japan
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Horikoshi Y, Suwa J, Higuchi H, Kaneko T, Furuichi M, Aizawa Y, Fukuoka K, Okazaki K, Ito K, Shoji T. Sustained pediatric antimicrobial stewardship program with consultation to infectious diseases reduced carbapenem resistance and infection-related mortality. Int J Infect Dis 2017; 64:69-73. [PMID: 28941633 DOI: 10.1016/j.ijid.2017.09.012] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [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: 07/25/2017] [Revised: 09/04/2017] [Accepted: 09/08/2017] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE The impact of pediatric antimicrobial stewardship programs (ASP) on antimicrobial resistance (AMR) remains largely unknown. This study aimed to evaluate the AMR for carbapenem of Gram-negative bacilli (GNB) and carbapenem use with infectious diseases consultation after the implementation of an ASP. METHODS This quasi-experimental study was conducted at Tokyo Metropolitan Children's Medical Center in Japan. The pre- and post-intervention periods were April 2010 to September 2011 and October 2011 to March 2017, respectively. The pre-intervention phase consisted of consultations with the infectious diseases service alone. The ASP was implemented during the post-intervention phase. The carbapenem resistance rates of GNB were calculated. The correlation between carbapenem resistance rates and carbapenem day of therapy (DOT) was examined. The outcome metrics were compared by average length of hospitalization, all-cause mortality, and infection-related mortality. RESULTS A positive correlation was observed between the carbapenem resistance rate in Pseudomonas aeruginosa and DOT (0.76, p=0.04). The carbapenem resistance rate in P. aeruginosa (p<0.01) and DOT (p<0.01) decreased significantly in the post-intervention period. The length of hospitalization (p<0.01) and infection-related mortality (p=0.05) decreased in the post-intervention period. CONCLUSIONS A sustained ASP with additional consultation with the infectious disease service reduced carbapenem use and resistance in P. aeruginosa, leading to favorable outcomes in terms of length of hospitalization and infection-related mortality.
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Affiliation(s)
- Yuho Horikoshi
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, 2-8-29 Musashidai, Fuchu City, Tokyo, 183-8561, Japan.
| | - Junichi Suwa
- Department of Pharmacy, Tokyo Metropolitan Children's Medical Center, Fuchu City, Tokyo, Japan
| | - Hiroshi Higuchi
- Division of Microbiology, Department of Laboratory, Tokyo Metropolitan Children's Medical Center, Fuchu City, Tokyo, Japan
| | - Tetsuji Kaneko
- Clinical Research Support Center, Tokyo Metropolitan Children's Medical Center, Fuchu City, Tokyo, Japan
| | - Mihoko Furuichi
- Division of Infectious Diseases and Allergy, Saitama Children's Medical Center, Saitama City, Saitama, Japan
| | - Yuta Aizawa
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, 2-8-29 Musashidai, Fuchu City, Tokyo, 183-8561, Japan
| | - Kahoru Fukuoka
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, 2-8-29 Musashidai, Fuchu City, Tokyo, 183-8561, Japan
| | - Kaoru Okazaki
- Division of Neonatology, Tokyo Metropolitan Children's Medical Center, Fuchu City, Tokyo, Japan
| | - Kenta Ito
- Division of General Pediatrics, Aichi Children's Health and Medical Center, Ohfu City, Aichi, Japan
| | - Takayo Shoji
- Division of Pediatric Infectious Diseases, Shizuoka Children's Hospital, Shizuoka City, Shizuoka, Japan
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Kotaki R, Higuchi H, Ogiya D, Katahira Y, Kurosaki N, Yukihira N, Ogata J, Yamamoto H, Mohamad Alba S, Azhim A, Kitajima T, Inoue S, Morishita K, Ono K, Koyama-Nasu R, Kotani A. Imbalanced expression of polycistronic miRNA in acute myeloid leukemia. Int J Hematol 2017; 106:811-819. [PMID: 28831750 DOI: 10.1007/s12185-017-2314-1] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 08/07/2017] [Accepted: 08/07/2017] [Indexed: 12/18/2022]
Abstract
miR-1 and miR-133 are clustered on the same chromosomal loci and are transcribed together as a single transcript that is positively regulated by ecotropic virus integration site-1 (EVI1). Previously, we described how miR-133 has anti-tumorigenic potential through repression of EVI1 expression. It has also been reported that miR-1 is oncogenic in the case of acute myeloid leukemia (AML). Here, we show that expression of miR-1 and miR-133, which have distinct functions, is differentially regulated between AML cell lines. Interestingly, the expression of miR-1 and EVI1, which binds to the promoter of the miR-1/miR-133 cluster, is correlative. The expression levels of TDP-43, an RNA-binding protein that has been reported to increase the expression, but inhibits the activity, of miR-1, were not correlated with expression levels of miR-1 in AML cells. Taken together, our observations raise the possibility that the balance of polycistronic miRNAs is regulated post-transcriptionally in a hierarchical manner possibly involving EVI1, suggesting that the deregulation of this balance may play some role in AML cells with high EVI1 expression.
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Affiliation(s)
- Ryutaro Kotaki
- Division of Hematological Malignancy, Institute of Medical Sciences, Tokai University, 143 Shimokasuya, Isehara, Kanagawa, 259-1193, Japan
| | - Hiroshi Higuchi
- Division of Hematological Malignancy, Institute of Medical Sciences, Tokai University, 143 Shimokasuya, Isehara, Kanagawa, 259-1193, Japan
| | - Daisuke Ogiya
- Department of Hematology and Oncology, Tokai University School of Medicine, Isehara, Kanagawa, 259-1193, Japan
| | - Yasuhiro Katahira
- Division of Hematological Malignancy, Institute of Medical Sciences, Tokai University, 143 Shimokasuya, Isehara, Kanagawa, 259-1193, Japan
| | - Natsumi Kurosaki
- Division of Hematological Malignancy, Institute of Medical Sciences, Tokai University, 143 Shimokasuya, Isehara, Kanagawa, 259-1193, Japan
| | - Naoko Yukihira
- Division of Hematological Malignancy, Institute of Medical Sciences, Tokai University, 143 Shimokasuya, Isehara, Kanagawa, 259-1193, Japan
| | - Jun Ogata
- Division of Hematological Malignancy, Institute of Medical Sciences, Tokai University, 143 Shimokasuya, Isehara, Kanagawa, 259-1193, Japan
| | - Haruna Yamamoto
- Division of Hematological Malignancy, Institute of Medical Sciences, Tokai University, 143 Shimokasuya, Isehara, Kanagawa, 259-1193, Japan
| | - Syakira Mohamad Alba
- Department of Electronic Systems Engineering, Malaysia-Japan International Institute of Technology, University of Technology Malaysia, 54100, Kuala Lumpur, Malaysia
| | - Azran Azhim
- Department of Biotechnology, Kulliyyah of Science, International Islamic University Malaysia, 25200, Kuantan, Malaysia
| | - Tatsuo Kitajima
- Department of Electronic Systems Engineering, Malaysia-Japan International Institute of Technology, University of Technology Malaysia, 54100, Kuala Lumpur, Malaysia
| | - Shigeaki Inoue
- Department of Emergency and Critical Care Medicine, Tokai University School of Medicine, Isehara, Kanagawa, 259-1193, Japan
| | - Kazuhiro Morishita
- Department of Medical Sciences, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Koh Ono
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ryo Koyama-Nasu
- Division of Hematological Malignancy, Institute of Medical Sciences, Tokai University, 143 Shimokasuya, Isehara, Kanagawa, 259-1193, Japan.
| | - Ai Kotani
- Division of Hematological Malignancy, Institute of Medical Sciences, Tokai University, 143 Shimokasuya, Isehara, Kanagawa, 259-1193, Japan. .,Department of Hematology and Oncology, Tokai University School of Medicine, Isehara, Kanagawa, 259-1193, Japan.
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Higuchi H, Kobayashi A, Ikeda K, Hatayama K, Yanagisawa S, Kato K. Efficacy of β-Tricalcium Phosphate Graft into the Bone Defects after Bone-Patellar Tendon-Bone Anterior Cruciate Ligament Reconstruction. J Knee Surg 2017; 30:467-473. [PMID: 27680889 DOI: 10.1055/s-0036-1593364] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
This prospective pilot study investigated whether grafting β-tricalcium phosphate (B-TCP) into the bone-patellar tendon-bone (BPTB)-harvesting site after anterior cruciate ligament reconstruction would accelerate bone and tendon regeneration in the grafted site. Overall, 19 patients agreed prospectively to undergo regular morphological and histological examinations of the B-TCP-grafted site. Postoperative radiographic, ultrasonographic, and magnetic resonance imaging (MRI) examinations were performed to evaluate the grafted site at 1, 3, 6, and 12 months. Postoperative knee function and donor-site morbidity were assessed at 12 months using the kneeling test. A histological examination was also performed at this time Radiographic examination and MRI showed that the grafted B-TCP was completely absorbed and remodeled into normal bone structure in the tibia and patella at 6 months postoperatively. Histological and ultrasonographic examinations of all subjects showed that the grafted B-TCP was substituted by normal bone tissue, and the patellar tendon - bone junction had regenerated at 12 months postoperatively. Clinical functional knee tests showed good recovery of the donor site. All patients could perform kneeling and knee walking on hard ground. The results of this pilot study suggest that grafting B-TCP into the BPTB-harvesting site promotes the remodeling process of the bone and patellar tendon structures. This surgical treatment would decrease an incidence of the anterior knee pain after ACLR using a BPTB autograft.
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Affiliation(s)
- Hiroshi Higuchi
- Department of Orthopaedic Surgery, Asakura Sports Rehabilitation Clinic, Maebashi, Japan
| | - Atsushi Kobayashi
- Department of Orthopaedic Surgery, Asakura Sports Rehabilitation Clinic, Maebashi, Japan
| | - Keiko Ikeda
- Department of Clinical Pathology, Asakura Sports Rehabilitation Clinic, Maebashi, Japan
| | - Kazuhisa Hatayama
- Department of Orthopaedic Surgery, Gunma Chuo Hospital, Maebashi, Japan
| | - Sinya Yanagisawa
- Department of Orthopaedic Surgery, Zenshukai Hospital, Maebashi, Japan
| | - Kazuo Kato
- Department of Rehabilitation, Asakura Sports Rehabilitation Clinic, Maebashi, Japan
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Murase SI, Shiiya T, Higuchi H. Neuropeptide Y Y 5 receptor localization in mouse central nervous system. Brain Res 2017; 1655:216-232. [PMID: 27984021 DOI: 10.1016/j.brainres.2016.10.026] [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: 04/17/2016] [Revised: 10/12/2016] [Accepted: 10/27/2016] [Indexed: 10/20/2022]
Abstract
Neuropeptide Y (NPY) and its receptors affect blood pressure, feeding behavior, and neurogenesis. In this study, the distribution of neurons expressing NPY Y5 receptor (Y5) was examined in adult mouse central nervous system by immunohistochemistry. Y5 protein localization was investigated using polyclonal anti-Y5 antibody, which was successfully preabsorbed with Y5 knockout brain tissues. The preabsorbed anti-Y5 antibody did not react with Y5 knockout brain tissues, thus meeting the "hard specificity criterion," which is the absence of staining in tissues genetically deficient for the antigen (Pradidarcheep et al., 2008). Y5-positive neurons were found in most brain areas. Most Y5 immunoreactivities were observed as dot-like structures adjacent to the plasma membrane, as expected for a cell membrane receptor. In situ hybridization showed that the Y5 mRNA expression was correlated with the Y5 protein level in each case and that it was probably controlled by the transcriptional regulation of the Y5 gene. In the nuclei where Y5 was expressed, Y5 immunoreactivities were found mainly in the somatic and dendritic areas. The distribution patterns of the Y5-positive cells that were broader than previously expected suggest important biological activities of the Y5 in many brain areas.
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Affiliation(s)
- Shin-Ichi Murase
- Division of Pharmacology, Niigata University, Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan.
| | - Tomohiro Shiiya
- Division of Pharmacology, Niigata University, Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Hiroshi Higuchi
- Division of Pharmacology, Niigata University, Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan.
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Iwami D, Hotta K, Sasaki H, Hirose T, Higuchi H, Takada Y, Shinohara N. Highly Immunogenic DQB1 Mismatch Eplets Are Associated With Development of Chronic Active Antibody-Mediated Rejection: A First Report From Japan. Transplant Proc 2017; 49:84-87. [DOI: 10.1016/j.transproceed.2016.10.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Horikoshi Y, Suwa J, Higuchi H, Murai T, Nakamura Y, Yamanaka T, Fukuoka K, Cho Y, Sakurai H, Aizawa Y, Isogai M, Yuza Y, Shoji T, Ito K. Antimicrobial Stewardship Program at Hematology-Oncology and Hematopoietic Stem Cell Transplant Wards at a Children's Hospital in Japan. Open Forum Infect Dis 2016. [DOI: 10.1093/ofid/ofw194.171] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Yuho Horikoshi
- Infectious Diseases, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Junichi Suwa
- Pharmacy, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Hiroshi Higuchi
- Microbiology, Tokyo Metropolitan Children' s Medical Center, Tokyo, Japan
| | - Takemi Murai
- Infectious Diseases, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Yukitsugu Nakamura
- Infectious Diseases, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Takayuki Yamanaka
- Infectious Diseases, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Kahoru Fukuoka
- Infectious Diseases, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Yoshiaki Cho
- Infectious Diseases, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Hiroki Sakurai
- Infectious Diseases, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Yuta Aizawa
- Infectious Diseases, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Mihoko Isogai
- Infectious Diseases, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Yuki Yuza
- Hematology-Oncology, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Takayo Shoji
- Infectious Diseases, Shizuoka Children's Hospital, Shizuoka, Japan
| | - Kenta Ito
- General Pediatrics, Aichi Children's Health and Medical Center, Nagoya, Japan
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Takaya K, Higuchi H, Ishii-Maruhama M, Yabuki-Kawase A, Honda Y, Tomoyasu Y, Maeda S, Miyawaki T. Capnography Prevents Hypoxia during Sedation for Dental Treatment: A Randomized Controlled Trial. JDR Clin Trans Res 2016; 2:158-167. [DOI: 10.1177/2380084416674670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Intravenous sedation is useful for dental treatment in patients with intellectual disabilities. However, it is often necessary to manage such patients with deep sedation because their cooperation cannot be obtained. During deep sedation, undetected hypoventilation can lead to severe complications, such as hypoxia. Recently, capnographic monitoring has been advocated as a useful technique for preventing hypoxia during sedation. This randomized control trial evaluated whether the use of capnography reduces the incidence of hypoxia during the deep sedation of patients for dental treatment. This study involved patients with intellectual disabilities who underwent dental treatment under sedation. The subjects were randomized to the intervention group (I-group) or control group (C-group). All of the patients underwent routine monitoring, as well as bispectral index (BIS) and capnographic monitoring; however, only an independent observer had access to the patients’ capnographic data during the dental procedures. Sedation was maintained at a BIS of 50 to 70 by administration of propofol. In the I-group, the independent observer signaled to the dental anesthesiologist if the capnogram indicated that the patient had been suffering from alveolar hypoventilation or apnea for >15 s. In the C-group, the observer signaled to the dental anesthesiologist if the capnogram indicated that the patient had been suffering from alveolar hypoventilation or apnea for >60 s. In both groups, the dental anesthesiologists responded to the signals using appropriate airway management strategies. The primary endpoint of this study was the incidence of hypoxia during dental treatment, which was defined as oxygen saturation of <95%. Hypoxemic episodes occurred in 13.4% and 34.8% of cases in the I-group and C-group, respectively. The incidence of hypoxia was significantly lower in the I-group. These results suggest that capnographic monitoring during deep sedation for dental treatment prevents hypoxemic episodes by allowing the early detection of hypoventilation. Knowledge Transfer Statement: This is the first randomized controlled trial to examine whether the use of capnography reduces the incidence of hypoxia during deep sedation for dental treatment. The findings of this study can be used by clinicians to aid decision-making regarding dental sedation standards at individual clinics. Moreover, they can be used as high-level evidence during the production or updating of clinical guidelines for dental sedation by leading associations.
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Affiliation(s)
- K. Takaya
- Department of Dental Anesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - H. Higuchi
- Department of Dental Anesthesiology, Okayama University Hospital, Okayama, Japan
| | - M. Ishii-Maruhama
- Department of Dental Anesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - A. Yabuki-Kawase
- Center for Promotion of Dental Education and International Collaboration, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Y. Honda
- Department of Dental Anesthesiology, Okayama University Hospital, Okayama, Japan
| | - Y. Tomoyasu
- Department of Dental Anesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - S. Maeda
- Department of Dental Anesthesiology, Okayama University Hospital, Okayama, Japan
| | - T. Miyawaki
- Department of Dental Anesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Hatayama K, Terauchi M, Saito K, Hagiwara K, Higuchi H. Tibial Tubercle in Valgus Osteoarthritic Knees Is More Laterally Positioned Than in Varus Knees. J Arthroplasty 2016; 31:2303-7. [PMID: 27155995 DOI: 10.1016/j.arth.2016.03.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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: 01/18/2016] [Revised: 03/14/2016] [Accepted: 03/17/2016] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND The tibial tubercle (TT) is the most reliable landmark of the tibial component rotation in total knee arthroplasty. However, there is no report comparing the position of the TT between valgus and varus osteoarthritic knees. METHODS Using preoperative computed tomography, we measured the TT-posterior cruciate ligament (PCL) distance representing the degree of lateralization of the TT and the angle between Akagi's anteroposterior (AP) axis and the dorsal condylar line (DCL) of the tibia in 36 valgus and 40 varus osteoarthritic knees and compared them. RESULTS The mean TT-PCL distances in valgus and varus knees were 26.1 (18.2-36.8) and 17.2 mm (10.3-22.6), respectively, with a significant difference (P < .001). Twenty-four of 36 valgus knees (67%) had abnormal TT-PCL (>24 mm). The mean AP-DCL angles in valgus and varus knees were 103° (95.8°-114.8°) and 93.2° (85.3°-99.6°), respectively, with a significant difference (P < .001). CONCLUSION The TT in valgus knees was significantly more laterally positioned than in varus knees. Also, Akagi's AP axis in valgus knees was significantly more externally rotated relative to the DCL of the tibia than in varus knees. Attention is necessary to correct rotational alignment without posterolateral overhang of the tibial component during total knee arthroplasty, particularly for valgus knees.
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Affiliation(s)
- Kazuhisa Hatayama
- Department of Orthopaedic Surgery, Japan Community Health Care Organization Gunma Chuo Hospital, Maebashi, Gunma, Japan
| | - Masanori Terauchi
- Department of Orthopaedic Surgery, Japan Community Health Care Organization Gunma Chuo Hospital, Maebashi, Gunma, Japan
| | - Kenichi Saito
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Keiichi Hagiwara
- Department of Orthopaedic Surgery, Zensyukai Hospital, Maebashi, Gunma, Japan
| | - Hiroshi Higuchi
- Department of Orthopaedic Sports Surgery, Asakura Sports Rehabilitation Clinic, Maebashi, Gunma, Japan
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Horikoshi Y, Higuchi H, Suwa J, Isogai M, Shoji T, Ito K. Impact of computerized pre-authorization of broad spectrum antibiotics in Pseudomonas aeruginosa at a children's hospital in Japan. J Infect Chemother 2016; 22:532-5. [PMID: 27263807 DOI: 10.1016/j.jiac.2016.05.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 05/02/2016] [Accepted: 05/02/2016] [Indexed: 11/16/2022]
Abstract
BACKGROUND The spread of antimicrobial-resistant organisms is a global concern. To stem this tide, an antimicrobial stewardship program at hospitals is essential to optimize the prescription of broad spectrum antibiotics. In this study we examined the impact of computerized pre-authorization for broad spectrum antibiotics for Pseudomonas aeruginosa at a children's hospital. METHODS An antimicrobial stewardship program at Tokyo Metropolitan Children's Medical Center was assessed between March 2010 and March 2015. A paper-based post-prescription audit was switched to computerized pre-authorization for broad antipseudomonal agents in October 2011. The prescriber was required to obtain approval from physicians in the pediatric infectious diseases division before prescribing restricted antimicrobial agents. Approved prescriptions were processed and logged electronically. We evaluated days of therapy per 1000 patient-days, the cost of antibiotics, and the susceptibility of P. aeruginosa to piperacillin, ceftazidime, cefepime, piperacillin/tazobactam, carbapenems, and ciprofloxacin. Also, the average length of admission and infection-related mortality at 30 days were compared pre- and post-intervention. RESULTS Administration of carbapenems, piperacillin/tazobactam, and ceftazidime decreased significantly after the introduction of computerized pre-authorization. Antibiotic costs were reduced by JPY2.86 million (USD 26,000) annually. None of the antipseudomonal agents showed decreased sensitivity. The average length of admission was shorter in post-intervention. Infection-related mortality at 30 days showed no difference between the pre- and post-intervention periods. CONCLUSION An antimicrobial stewardship program using computerized pre-authorization decreased the use and cost of broad spectrum antibiotics without significant difference in infection-related mortality at 30 days, although our study did not improve susceptibilities of P. aeruginosa.
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Affiliation(s)
- Yuho Horikoshi
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Japan.
| | - Hiroshi Higuchi
- Division of Microbiology, Department of Clinical Laboratory, Tokyo Metropolitan Children's Medical Center, Japan
| | - Junichi Suwa
- Department of Pharmacy, Tokyo Metropolitan Children's Medical Center, Japan
| | - Mihoko Isogai
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Japan
| | - Takayo Shoji
- Division of Pediatric Infectious Diseases, Shizuoka Children's Hospital, Japan
| | - Kenta Ito
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Japan
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Higuchi H, Shoji T, Iijima S, Nishijima KI. Constitutively expressed Siglec-9 inhibits LPS-induced CCR7, but enhances IL-4-induced CD200R expression in human macrophages. Biosci Biotechnol Biochem 2016; 80:1141-8. [PMID: 26923638 DOI: 10.1080/09168451.2016.1146070] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Siglecs recognize the sialic acid moiety and regulate various immune responses. In the present study, we compared the expression levels of Siglecs in human monocytes and macrophages using a quantitative real-time reverse transcription-polymerase chain reaction analysis. The differentiation of monocytes into macrophages by macrophage colony-stimulating factor or granulocyte macrophage colony-stimulating factor enhanced the expression of Siglec-7 and Siglec-9. The differentiated macrophages were stimulated by lipopolysaccharide (LPS) plus interferon (IFN)-γ or interleukin (IL)-4. The expression of Siglec-10 was enhanced by IL-4, whereas that of Siglec-7 was reduced by LPS plus IFN-γ. The expression of Siglec-9 was not affected by these stimuli. The knockdown of Siglec-9 enhanced the expression of CCR7 induced by the LPS or the LPS plus IFN-γ stimulation, and decreased the IL-4-induced expression of CD200R. These results suggest that Siglec-9 is one of the main Siglecs in human blood monocytes/macrophages and modulates innate immunity.
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Affiliation(s)
- Hiroshi Higuchi
- a Department of Biotechnology , Nagoya University , Nagoya , Japan
| | - Toru Shoji
- a Department of Biotechnology , Nagoya University , Nagoya , Japan
| | - Shinji Iijima
- a Department of Biotechnology , Nagoya University , Nagoya , Japan
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Abstract
Siglecs, an immunoglobulin-like lectin family that recognizes the sialic acid moiety, regulate various aspects of immune responses. In the present study, we investigated the effects of Siglecs on the macrophage cell line RAW264, which was stimulated with interleukin-4 (IL-4). The induction of arginase-1 (Arg1) by IL-4 was stronger in Siglec-9-expressing cells than in mock cells. Mutations in the cytoplasmic tyrosine-based inhibitory motifs in Siglec-9 markedly reduced the expression of Arg1. The phosphorylation of Akt by IL-4 and extracellular signal-regulated kinase (ERK) without IL-4 was stronger in Siglec-9-expressing cells, indicating the enhanced activation of the phosphatidylinositol 3 kinase (PI-3K) and mitogen-activated protein kinase kinase (MEK)/ERK pathways, respectively. The enhanced expression of Arg1 was inhibited by MEK inhibitors, but not by PI-3K inhibitor. These results indicate that Siglec-9 affects several different signaling pathways in IL-4-stimulated macrophages, which resulted in enhanced induction of Arg1 in Siglec-9-expressing RAW264 cells.
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Affiliation(s)
- Hiroshi Higuchi
- a Department of Biotechnology , Graduate School of Engineering, Nagoya University , Nagoya , Japan
| | - Toru Shoji
- a Department of Biotechnology , Graduate School of Engineering, Nagoya University , Nagoya , Japan
| | - Yusuke Murase
- a Department of Biotechnology , Graduate School of Engineering, Nagoya University , Nagoya , Japan
| | - Shinji Iijima
- a Department of Biotechnology , Graduate School of Engineering, Nagoya University , Nagoya , Japan
| | - Ken-ichi Nishijima
- a Department of Biotechnology , Graduate School of Engineering, Nagoya University , Nagoya , Japan
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Saito K, Hatayama K, Terauchi M, Hagiwara K, Higuchi H, Takagishi K. Clinical Outcomes After Anatomic Double-Bundle Anterior Cruciate Ligament Reconstruction: Comparison of Extreme Knee Hyperextension and Normal to Mild Knee Hyperextension. Arthroscopy 2015; 31:1310-7. [PMID: 25801047 DOI: 10.1016/j.arthro.2015.01.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2014] [Revised: 01/07/2015] [Accepted: 01/21/2015] [Indexed: 02/02/2023]
Abstract
PURPOSE The aim of this study was to compare postoperative outcomes after anatomic double-bundle anterior cruciate ligament reconstruction (ACLR) in extreme knee hyperextension versus normal to mild knee hyperextension. METHODS For 100 patients who underwent anatomic double-bundle ACLR using semitendinosus tendon, we evaluated the side-to-side difference (SSD) in anterior tibial translation (measured on stress radiographs) and rotational stability (assessed by the pivot-shift test) 2 years after surgery. Loss of extension (LOE) was evaluated on lateral radiographs of both knees in full extension, and graft integrity was assessed during second-look arthroscopy 1 to 2 years after surgery. In accordance with the Beighton and Honan criteria, patients with an extension angle less than or equal to 10° in the contralateral uninjured knee composed the group with 10° or less hyperextension (N group), and those with an extension angle of greater than 10° composed the group with more than 10° hyperextension (H group). Postoperative results were compared between these groups. RESULTS Mean extension angles in the N and H groups were 5.8° ± 2.9° and 14.7° ± 3.0°, respectively. The mean SSD in anterior translation was 2.2 ± 2.9 mm for the N group and 2.8 ± 2.9 mm for the H group, with no significant difference. The positive ratios on the pivot-shift test were not significantly different between the groups. Mean LOE in the N and H groups was -0.7° ± 3.7° and 1.3° ± 3.3°, respectively, with a significant difference (P = .007). During second-look arthroscopy, 6 of 58 knees in the N group and 13 of 42 knees in the H group had superficial graft laceration of the anteromedial bundle graft, with a significant difference (P = .01) seen between groups. CONCLUSIONS Anatomic double-bundle ACLR for extreme knee hyperextension may attain the same postoperative anterior and rotational stability as seen in knees with normal to mild hyperextension. However, it increased superficial graft laceration. LEVEL OF EVIDENCE Level III, retrospective comparative study.
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Affiliation(s)
- Kenichi Saito
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan; Department of Orthopaedic Surgery, Japan Community Health Care Organization, Gunma Central Hospital, Maebashi, Gunma, Japan
| | - Kazuhisa Hatayama
- Department of Orthopaedic Surgery, Japan Community Health Care Organization, Gunma Central Hospital, Maebashi, Gunma, Japan.
| | - Masanori Terauchi
- Department of Orthopaedic Surgery, Japan Community Health Care Organization, Gunma Central Hospital, Maebashi, Gunma, Japan
| | - Keiichi Hagiwara
- Department of Orthopaedic Surgery, Japan Community Health Care Organization, Gunma Central Hospital, Maebashi, Gunma, Japan
| | - Hiroshi Higuchi
- Department of Orthopaedic Sports Surgery, Asakura Sports Rehabilitation Clinic, Maebashi, Gunma, Japan
| | - Kenji Takagishi
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
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Kikuchi H, Izena S, Higuchi H, Okumura Y, Higashiguchi K. A giant polymer lattice in a polymer-stabilized blue phase liquid crystal. Soft Matter 2015; 11:4572-4575. [PMID: 25947305 DOI: 10.1039/c5sm00711a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Ultrasmall-angle synchrotron X-ray scattering measurements showed that a three-dimensional polymer lattice of a few 100 nm order with body-centered cubic O(8-) symmetry was formed in a polymer-stabilized blue phase liquid crystal. We obtained clear experimental evidence that the polymer chains condensed selectively in the disclinations within the blue phase during photo-polymerization of monomers in the blue phase.
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Affiliation(s)
- H Kikuchi
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan.
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Hayashi N, Inoue D, Matsumoto M, Matsushita A, Higuchi H, Aya Y, Nakagawa T. High-efficiency thin and compact concentrator photovoltaics with micro-solar cells directly attached to a lens array. Opt Express 2015; 23:A594-A603. [PMID: 26072884 DOI: 10.1364/oe.23.00a594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We propose a thin and compact concentrator photovoltaic (CPV) module, about 20 mm thick, one tenth thinner than those of conventional CPVs that are widely deployed for mega-solar systems, to broaden CPV application scenarios. We achieved an energy conversion efficiency of 37.1% at a module temperature of 25 °C under sunlight irradiation optimized for our module. Our CPV module has a lens array consisting of 10 mm-square unit lenses and micro solar cells that are directly attached to the lens array, to reduce the focal length of the concentrator and to reduce optical losses due to reflection. The optical loss of the lens in our module is about 9.0%, which is lower than that of conventional CPV modules with secondary optics. This low optical loss enables our CPV module to achieve a high energy conversion efficiency.
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Shimoyama N, Gomyo I, Teramoto O, Kojima K, Higuchi H, Yukitoshi N, Ohta E, Shimoyama M. Efficacy and safety of sublingual fentanyl orally disintegrating tablet at doses determined from oral morphine rescue doses in the treatment of breakthrough cancer pain. Jpn J Clin Oncol 2014; 45:189-96. [DOI: 10.1093/jjco/hyu182] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Hidano A, Konnai S, Yamada S, Githaka N, Isezaki M, Higuchi H, Nagahata H, Ito T, Takano A, Ando S, Kawabata H, Murata S, Ohahsi K. Suppressive effects of neutrophil by Salp16-like salivary gland proteins from Ixodes persulcatus Schulze tick. Insect Mol Biol 2014; 23:466-474. [PMID: 24698498 DOI: 10.1111/imb.12101] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Salp16, a 16-kDa tick salivary gland protein, is known to be the molecule involved in the transmission of Anaplasma phagocytophilum, an obligate intracellular pathogen causing zoonotic anaplasmosis, from its mammalian hosts to Ixodes scapularis. Recently, the presence of A. phagocytophilum was documented in Japan and Ixodes persulcatus was identified as one of its vectors. The purpose of this study was to identify Salp16 genes in I. persulcatus and characterize their function. Two cDNA clones encoding the Salp16-like sequences were obtained from the salivary glands of fed female I. persulcatus ticks and designated Salp16 Iper1 and Iper2. Gene expression analyses showed that the Salp16 Iper genes were expressed specifically in the salivary glands and were up-regulated by blood feeding. These proteins attenuated the oxidative burst of activated bovine neutrophils and inhibited their migration induced by the chemoattractant interleukin-8 (IL-8). These results demonstrate that Salp16 Iper proteins contribute to the establishment of blood feeding as an immunosuppressant of neutrophil, an essential factor in innate host immunity. Further examination of the role of Salp16 Iper in the transmission of pathogens, including A. phagocytophilum, will increase our understanding of the tick-host-pathogen interface.
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Affiliation(s)
- A Hidano
- Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
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Abstract
We examined the outcomes and levels of patient satisfaction in 202 consecutive cases of ultrasound-guided supraclavicular brachial plexus block (SBPB) in upper limb surgery performed between September 2007 and March 2010. All blocks were performed by orthopaedic surgeons using ultrasound visualisation with a high-frequency linear probe. The probe was placed in the coronal–oblique plane in the supraclavicular fossa, and the puncture was ‘in-plane’ from lateral to medial. Most of the blocks were performed with 0.75% ropivacaine/1% lidocaine (1:1), with or without adrenaline in 1:200 000 dilution. In 201 patients (99.5%) the brachial plexus block permitted surgery without conversion to general anaesthesia. The mean procedure time for block was 3.9 min (2 to 12), the mean waiting time for surgery was 34.1 min (10 to 64), the mean surgical time was 75.2 min (6 to 232), and the mean duration of post-anaesthetic analgesia was 437 min (171 to 992). A total of 20 patients (10%) developed a transient Horner’s syndrome. No nerve injury, pneumothorax, arterial puncture or systemic anaesthetic toxicity were recorded. Most patients (96.7%) were satisfied with ultrasound-guided SBPB. This study demonstrates the efficacy and safety of ultrasound-guided SBPB for orthopaedic surgery on the upper limb. Cite this article: Bone Joint J 2014;96-B:795–9.
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Affiliation(s)
- K. Gamo
- Hoshigaoka Koseinenkin Hospital, Department
of Orthopaedic Surgery, 4-8-1 Hoshigaoka, Hirakata-shi, Osaka
573-8511, Japan
| | - K. Kuriyama
- Hoshigaoka Koseinenkin Hospital, Department
of Orthopaedic Surgery, 4-8-1 Hoshigaoka, Hirakata-shi, Osaka
573-8511, Japan
| | - H. Higuchi
- Moriguchi Keijinkai Hospital, Department
of Orthopaedic Surgery, 2-47-12, Yakumohigashi, Moriguchi-shi, Osaka
570-0021, Japan
| | - A. Uesugi
- Hoshigaoka Koseinenkin Hospital, Department
of Orthopaedic Surgery, 4-8-1 Hoshigaoka, Hirakata-shi, Osaka
573-8511, Japan
| | - T. Nakase
- Hoshigaoka Koseinenkin Hospital, Department
of Orthopaedic Surgery, 4-8-1 Hoshigaoka, Hirakata-shi, Osaka
573-8511, Japan
| | - M. Hamada
- Hoshigaoka Koseinenkin Hospital, Department
of Orthopaedic Surgery, 4-8-1 Hoshigaoka, Hirakata-shi, Osaka
573-8511, Japan
| | - H. Kawai
- Shijonawate Gakuen University, 6-45
Gakuen-cho, Daito-shi, Osaka
574-0001, Japan
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Shoji T, Higuchi H, Nishijima KI, Iijima S. Effects of Siglec on the expression of IL-10 in the macrophage cell line RAW264. Cytotechnology 2014; 67:633-9. [PMID: 24715531 DOI: 10.1007/s10616-014-9717-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Accepted: 03/20/2014] [Indexed: 11/24/2022] Open
Abstract
Interleukin-10 (IL-10) expression was significantly elevated upon stimulation with lipopolysaccharide (LPS) when the sialic acid-recognizing Ig-superfamily lectin Siglec-5 or -9 was overexpressed in RAW264 cells. During the course to clarify the mechanism for this activation, we found that IL-10 promoter proximal region up to -500 bp led to transactivation similar to that up to -1,500 bp. Among the transcription factors that activate the mouse IL-10 promoter so far reported, the level of C/EBPβ was increased in Siglec-9-expressing cells. Transient expression of the C/EBPβ major isoform LAP led to an increase in the expression of IL-10 in Siglec-9-expressing cells, but not in mock-transfected control RAW264 cells upon stimulation with LPS, as assessed by either a luciferase assay or the production of IL-10. Without LPS, the IL-10 promoter was activated by transiently expressed LAP in Siglec-9-expressing cells, however, the magnitude of transactivation was less than that with the LPS stimulation. The knockdown of C/EBPβ down-regulated the production of IL-10. Taken together, these results suggest that one of the reasons for the stimulation of IL-10 expression in Siglec-9-expressing cells may be an increase in intracellular C/EBPβ level.
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Affiliation(s)
- Toru Shoji
- Department of Biotechnology, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
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Hosaka S, Higuchi H, Kagawa T. Restoration of brain function in an elderly man. BMJ Case Rep 2014; 2014:bcr-2013-202118. [PMID: 24395878 DOI: 10.1136/bcr-2013-202118] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Kawasaki K, Hamamoto Y, Sakai G, Funakoshi S, Higuchi H, Takaishi H, Kitagawa Y. Retrospective Safety Analysis in Advanced Soft Tissue Sarcoma Patients of Pazopanib Hydrochloride. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt459.35] [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: 11/14/2022] Open
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Abstract
Abstract
It is often observed in industrial practice that the thickness uniformity of blown film obtained with a given die varies with the type of polymer. We have shown in previous works the importance of the wall slip of polymer melt in the film uniformity. Currently available models of polymer melt flow through spiral mandrel dies neglect the wall slip. The present work considers the slip in flow analyses and predicts the effects of rheological properties on the uniformity; the decreases in melt viscosity and wall slip and the increases in shear thinning and the stress dependence of wall slip reduce the uniformity. The predictions agree well with the experimental results obtained in our previous studies.
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Affiliation(s)
- H. Higuchi
- Materials & Chemicals Research Laboratory, Research & Development Center, Idemitsu Petrochemical Co., Ltd., Chiba, Japan
| | - K. Koyama
- Department of Materials Science & Engineering, Faculty of Engineering, Yamagata University, Yamagata, Japan
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