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Tanaka H, Komori S, Suetsugu T, Iwata Y, Watanabe T, Tanaka C, Nagao N, Noguchi K, Hisamatsu K, Katayama M, Kawai M. Concomitant pancreatic and duodenal metastases 12 years after nephrectomy for renal cell carcinoma: a case report. J Surg Case Rep 2024; 2024:rjae276. [PMID: 38706478 PMCID: PMC11068445 DOI: 10.1093/jscr/rjae276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 04/10/2024] [Indexed: 05/07/2024] Open
Abstract
In selected patients with metastatic renal cell carcinoma, metastasectomy can achieve prolonged survival. Herein we report a patient with concomitant pancreatic and duodenal metastases occurring 12 years after total right nephrectomy for a renal cell carcinoma. The metastases were successfully treated by a pancreas-sparing duodenectomy and distal pancreatectomy. A 66-year-old man was referred to our hospital with a chief complaint of right upper abdominal pain. He had undergone laparoscopic total right nephrectomy for renal cell carcinoma 12 years before. Enhanced computed tomography showed hypervascular tumors in the pancreatic body and the descending duodenum near the papilla of Vater. Histopathological examination of endoscopic ultrasonography-guided fine needle aspiration cytology specimens revealed metastatic clear cell renal cancer. The patient underwent pancreas-sparing duodenectomy and distal pancreatectomy. He developed a pancreatic fistula after surgery that improved with conservative treatment, and has been free of evidence of recurrence up to 20 months postoperatively.
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Affiliation(s)
- Hideharu Tanaka
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
| | - Shuji Komori
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
| | - Tomonari Suetsugu
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
| | - Yoshinori Iwata
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
| | - Taku Watanabe
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
| | - Chihiro Tanaka
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
| | - Narutoshi Nagao
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
| | - Kei Noguchi
- Department of Pathology, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
| | - Kenji Hisamatsu
- Department of Pathology, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
| | - Masaki Katayama
- Department of Pathology, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
| | - Masahiro Kawai
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
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Tanaka H, Mitsutomoe S, Nagao N, Komori S, Suetsugu T, Iwata Y, Watanabe T, Tanaka C, Kawai M. Right paraduodenal hernia presenting with strangulated obstruction with intestinal malrotation: a case report. J Surg Case Rep 2024; 2024:rjae311. [PMID: 38764731 PMCID: PMC11102785 DOI: 10.1093/jscr/rjae311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 04/26/2024] [Indexed: 05/21/2024] Open
Abstract
A paraduodenal hernia is a rare cause of an internal hernia that may require massive bowel resection; prompt diagnosis and surgical treatment are essential. In cases of malrotation, strangulation may occur both inside and outside the hernial sac. Strangulation outside the hernial sac makes the preoperative diagnosis more difficult. Herein, we report a patient with a right paraduodenal hernia, intestinal malrotation, and strangulation outside the hernia. An 86-year-old woman was admitted to our hospital with abdominal pain. Enhanced computed tomography showed a closed-loop obstruction of the hypo-enhancing small bowel and absence of a horizontal duodenal leg. The patient underwent an emergency laparotomy and was diagnosed with strangulated bowel obstruction due to a right paraduodenal hernia and malrotation. The patient underwent resection of the ischemic ileum, closure of the hernial orifice, and repositioning of the intestine. The postoperative course was uneventful. The patient reported no abdominal discomfort after 7 months of follow-up.
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Affiliation(s)
- Hideharu Tanaka
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
| | - Saki Mitsutomoe
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
| | - Narutoshi Nagao
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
| | - Shuji Komori
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
| | - Tomonari Suetsugu
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
| | - Yoshinori Iwata
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
| | - Taku Watanabe
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
| | - Chihiro Tanaka
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
| | - Masahiko Kawai
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1, Noishiki, Gifu, Gifu 500-8717, Japan
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Schiphof K, Kawauchi M, Tsuji K, Yoshimi A, Tanaka C, Nakazawa T, Honda Y. Functional analysis of basidiomycete specific chitin synthase genes in the agaricomycete fungus Pleurotus ostreatus. Fungal Genet Biol 2024; 172:103893. [PMID: 38657898 DOI: 10.1016/j.fgb.2024.103893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 04/10/2024] [Accepted: 04/17/2024] [Indexed: 04/26/2024]
Abstract
Chitin is an essential structural component of fungal cell walls composed of transmembrane proteins called chitin synthases (CHSs), which have a large range of reported effects in ascomycetes; however, are poorly understood in agaricomycetes. In this study, evolutionary and molecular genetic analyses of chs genes were conducted using genomic information from nine ascomycete and six basidiomycete species. The results support the existence of seven previously classified chs clades and the discovery of three novel basidiomycete-specific clades (BI-BIII). The agaricomycete fungus Pleurotus ostreatus was observed to have nine putative chs genes, four of which were basidiomycete-specific. Three of these basidiomycete specific genes were disrupted in the P. ostreatus 20b strain (ku80 disruptant) through homologous recombination and transformants were obtained (Δchsb2, Δchsb3, and Δchsb4). Despite numerous transformations Δchsb1 was unobtainable, suggesting disruption of this gene causes a crucial negative effect in P. ostreatus. Disruption of these chsb2-4 genes caused sparser mycelia with rougher surfaces and shorter aerial hyphae. They also caused increased sensitivity to cell wall and membrane stress, thinner cell walls, and overexpression of other chitin and glucan synthases. These genes have distinct roles in the structural formation of aerial hyphae and cell walls, which are important for understanding basidiomycete evolution in filamentous fungi.
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Affiliation(s)
- Kim Schiphof
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Moriyuki Kawauchi
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan.
| | - Kenya Tsuji
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Akira Yoshimi
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan; Graduate School of Global Environmental Studies, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Chihiro Tanaka
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan; Graduate School of Global Environmental Studies, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Takehito Nakazawa
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Yoichi Honda
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
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Han J, Kawauchi M, Schiphof K, Terauchi Y, Yoshimi A, Tanaka C, Nakazawa T, Honda Y. Features of disruption mutants of genes encoding for hydrophobin Vmh2 and Vmh3 in mycelial formation and resistance to environmental stress in Pleurotus ostreatus. FEMS Microbiol Lett 2023; 370:7134070. [PMID: 37081785 DOI: 10.1093/femsle/fnad036] [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: 02/28/2023] [Revised: 04/11/2023] [Accepted: 04/18/2023] [Indexed: 04/22/2023] Open
Abstract
Hydrophobins, which are small-secreted proteins with both hydrophobic and hydrophilic parts, can self-assemble into an amphiphilic film at the air-water interface, helping the fungus to form aerial hyphae. In the agaricomycete Pleurotus ostreatus, more than 20 putative hydrophobin genes have been predicted. Of these, two hydrophobin genes, vmh2 and vmh3, are predominantly expressed in the vegetative mycelium. In this study, we focused on the functions of Vmh2 and Vmh3 in vegetative mycelia. Based on the observation of the mycelial cross-section by transmission electron microscopy and the disappearance time of water droplets on the mycelial surface, Vmh2 and Vmh3 were considered essential for the maintenance of the surface hydrophobicity of the mycelium. The Δvmh3 and Δvmh2Δvmh3 strains exhibited relatively slower aerial mycelia formation on a liquid medium, and no significant alteration was observed in Δvmh2 strains. Only the Δvmh3 and Δvmh2Δvmh3 strains grew slower than the wild-type strain under stress conditions involving SDS and H2O2 on agar plates. This study revealed possible distinct roles for these hydrophobins in stress resistance. These results suggest that Agaricomycetes, including P. ostreatus, have evolved to possess multiple different hydrophobins as a means of adapting to various environments.
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Affiliation(s)
- Junxian Han
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Moriyuki Kawauchi
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Kim Schiphof
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Yuki Terauchi
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Akira Yoshimi
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Chihiro Tanaka
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Takehito Nakazawa
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Yoichi Honda
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
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Han J, Kawauchi M, Terauchi Y, Yoshimi A, Tanaka C, Nakazawa T, Honda Y. Physiological function of hydrophobin Vmh3 in lignin degradation by white-rot fungus Pleurotus ostreatus. Lett Appl Microbiol 2023; 76:7120042. [PMID: 37061783 DOI: 10.1093/lambio/ovad048] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 03/07/2023] [Accepted: 04/13/2023] [Indexed: 04/17/2023]
Abstract
Hydrophobins are small-secreted proteins comprising both hydrophobic and hydrophilic parts, that can self-assemble into an amphiphilic film at the air-liquid interface. More than 20 hydrophobin genes have been estimated in the white-rot fungus Pleurotus ostreatus. In our previous studies, three hydrophobin genes were shown to be predominantly expressed under ligninolytic conditions, and only vmh3 was downregulated in both the delignification-deficient mutant Δgat1 and Δhir1 strains. Here, we focused on the function of the hydrophobin Vmh3 to clarify its physiological role in lignin degradation. When the hyphae were observed by transmission electron microscopy, deletion of vmh3 resulted in the disappearance of black aggregates at the interface between the cell wall and outer environment. Deletion of vmh3 resulted in reduced hydrophobicity when 0.2% sodium dodecyl sulfate was dropped onto the mycelial surface. These results suggest that Vmh3 functions on the cell surface and plays a major role in mycelial hydrophobization. Furthermore, the Δvmh3 strain showed a marked delay in lignin degradation on beech wood sawdust medium, while the production of lignin-modifying enzymes was not reduced. This study demonstrated, for the first time, the possible effect of hydrophobin on lignin degradation by a white-rot fungus.
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Affiliation(s)
- Junxian Han
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Moriyuki Kawauchi
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Yuki Terauchi
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Akira Yoshimi
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Chihiro Tanaka
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Takehito Nakazawa
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Yoichi Honda
- Graduate School of Agriculture, Kyoto University, Kitashirakawaoiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
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Matsuda K, Tanaka C, Sato D, Nishikata T. Synthesizing Complex Quaternary Carbons by the Sequence-Regulated Additions of tert-Alkyl Radicals to Two Different Olefins. Org Lett 2023; 25:2840-2845. [PMID: 37057823 DOI: 10.1021/acs.orglett.3c00812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/15/2023]
Abstract
We report the sequence-regulated radical additions of tert-alkyl radicals to two different olefins controlled by a Cu catalyst, which we term the "atom-transfer radical addition-substitution" reaction. The reactions of α-bromocarbonyl compounds, such as tert-alkyl radical sources, with methacrylates and styrenes occur in a sequence-regulated manner to give the corresponding three-component product possessing skipped quaternary carbon centers. Our method provides new insight into how to control the reactivities of tert-alkyl radicals during the synthesis of regulated aliphatic chains.
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Affiliation(s)
- Kyosuke Matsuda
- Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
| | - Chihiro Tanaka
- Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
| | - Daisuke Sato
- Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
| | - Takashi Nishikata
- Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
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Osanai M, Miura M, Tanaka C, Kudo K, Hosokawa S, Tsushima M, Noro T, Iwaoka K, Hosoda M, Yamaguchi I, Saito Y. Long-Term Analysis of Internal Exposure Dose-Reduction Effects by Food Regulation and Food Item Contribution to Dose after the Fukushima Daiichi Nuclear Power Plant Accident. Foods 2023; 12:foods12061305. [PMID: 36981231 PMCID: PMC10048044 DOI: 10.3390/foods12061305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/14/2023] [Accepted: 03/16/2023] [Indexed: 03/22/2023] Open
Abstract
Over 10 years have passed since the Fukushima Daiichi Nuclear Power Plant accident. This study verifies the efficacy of longitudinal regulation on internal exposure doses and analyzes food group contributions to radiation doses using accumulated monitoring test results. The committed effective doses in 10,000 virtual persons from fiscal year (FY) 2012 to 2021, with and without regulation, were estimated as products of radioactivity concentrations randomly sampled from the test results, food intake, and dose coefficient. The distributed values of food intake rather than a mean value in dose estimation were assumed to reflect food intake variations and avoid underestimation of internal exposure doses for high-intake consumers. Furthermore, the ingestion of radioactive cesium from the calculation was analyzed per food group. The 95th percentile of the internal exposure dose (the dose of a “representative person”) was less than 1 mSv/year in both FYs. The regulation effect was substantial in FY 2012, and no noticeable difference in radiation doses was found between the regulation and no regulation conditions after FY 2016. Internal exposure doses decreased until approximately FY 2016 and then remained constant. It was also shown that not only radioactivity concentration but also food intake is a major factor affecting cesium intake. In summary, it was confirmed that Japan had ensured food safety regarding radioactive materials.
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Affiliation(s)
- Minoru Osanai
- Department of Radiation Science, Hirosaki University Graduate School of Health Sciences, Hirosaki 036-8564, Japan
- Correspondence: ; Tel.: +81-172395524
| | - Mayu Miura
- Department of Radiological Technology, Hirosaki University School of Health Sciences, Hirosaki 036-8564, Japan
| | - Chihiro Tanaka
- Department of Radiological Technology, Hirosaki University School of Health Sciences, Hirosaki 036-8564, Japan
| | - Kohsei Kudo
- Department of Radiation Science, Hirosaki University Graduate School of Health Sciences, Hirosaki 036-8564, Japan
| | - Shota Hosokawa
- Department of Radiation Science, Hirosaki University Graduate School of Health Sciences, Hirosaki 036-8564, Japan
| | - Megumi Tsushima
- Department of Radiation Science, Hirosaki University Graduate School of Health Sciences, Hirosaki 036-8564, Japan
| | - Tomuhiro Noro
- Department of Radiation Science, Hirosaki University Graduate School of Health Sciences, Hirosaki 036-8564, Japan
| | - Kazuki Iwaoka
- Department of Radiation Regulatory Science Research, National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology, Inage 263-8555, Japan
| | - Masahiro Hosoda
- Department of Radiation Science, Hirosaki University Graduate School of Health Sciences, Hirosaki 036-8564, Japan
| | - Ichiro Yamaguchi
- Department of Environmental Health, National Institute of Public Health, Wako 351-0197, Japan
| | - Yoko Saito
- Department of Radiation Science, Hirosaki University Graduate School of Health Sciences, Hirosaki 036-8564, Japan
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Kobori T, Tanaka C, Urashima Y, Takagaki N, Obata T. IFN-γ and IL-12 from Concentrated Ascites in Patients with Pancreatic Cancer Exerts Growth Inhibitory Effects against Pancreatic Cancer Cells. YAKUGAKU ZASSHI 2022; 142:1409-1417. [DOI: 10.1248/yakushi.22-00150] [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: 12/02/2022]
Affiliation(s)
- Takuro Kobori
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University
| | - Chihiro Tanaka
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University
| | - Yoko Urashima
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University
| | | | - Tokio Obata
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University
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Tanaka C, Naito Y, Suehiro S, Sano C, Ohta R. Device-Related Thrombotic Microangiopathy in an Elderly Patient With a History of Aortic Surgery. Cureus 2022; 14:e27937. [PMID: 36120189 PMCID: PMC9467496 DOI: 10.7759/cureus.27937] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/12/2022] [Indexed: 11/16/2022] Open
Abstract
Thrombotic microangiopathy (TMA) is caused by several diseases, including infections, congenital and autoimmune diseases, and malignancies, usually requiring admission to intensive care. The primary pathophysiology of TMA is microvascular thrombosis, and its diagnosis is based on the presence of hemolysis, thrombocytopenia, schistocytes in a blood smear, and organ damage. Among secondary TMAs, device-related TMA could be difficult to diagnose if device implementation was performed years ago. We report the case of an 87-year-old woman with a chief complaint of dyspnea diagnosed with device-related TMA. In device-related TMA, thrombogenesis/thrombocytopenia is triggered by hemolysis/fragmented red blood cells. However, in other TMAs, thrombogenesis or thrombocytopenia is preceded by hemolysis and the presence of fragmented red blood cells. Thus, rapid plasma exchange is necessary to address TMA pathogenesis. TMA can be managed in a community hospital if the facility has access to plasma exchange. It is possible to treat complex TMAs even in community hospitals by carefully considering their pathophysiology. Additionally, improving the quality of general practice in community hospitals will allow for more effective diagnosis and treatment of TMAs.
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Tsuji K, Kitade Y, Yoshimi A, Tanaka C. Meiotic Silencing in Dothideomycetous Bipolaris maydis. Front Fungal Biol 2022; 3:931888. [PMID: 37746229 PMCID: PMC10512333 DOI: 10.3389/ffunb.2022.931888] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 05/24/2022] [Indexed: 09/26/2023]
Abstract
The filamentous ascomycete Bipolaris maydis is a plant pathogen that causes corn leaf blight and has been used in cytological studies of sexual reproduction. In this fungus, when null mutants of each septin are crossed with the wild-type strain, all ascospores derived from the same asci show abnormal morphology. The phenomenon was remarkably similar to the event known as "ascus dominance" in Neurospora crassa, which is known to be caused by MSUD (meiotic silencing by unpaired DNA). However, it is not clear whether B. maydis possesses functional MSUD. The object of this study is to elucidate whether this fungus carries a functional MSUD system that causes ascus dominance in the crosses of septin mutants and the wild-type strain. The results of homozygous and heterozygous crossing tests with mutants, having the insertional CDC10-septin gene sequence into the genome, suggested that the ascus dominance in B. maydis is triggered by the unpaired DNA as in N. crassa. To investigate whether MSUD is caused by the same mechanism as in N. crassa, an RNA-dependent RNA polymerase, one of the essential factors in MSUD, was identified and disrupted (Δrdr1) in B. maydis. When the Δrdr1 strain was crossed with each mutant of the septins, ascus dominance did not occur in all crosses. These results suggest that this ascus dominance is caused by RNA silencing triggered by an unpaired gene, as in N. crassa, and septin genes were affected by this silencing. To date, although MSUD has been found only in Fusarium graminearum and N. crassa, which are classified as Sordariomycetes, this study showed that MSUD is also functional in B. maydis, which is classified as a Dothideomycete. These results showed the possibility that this posttranscriptional regulation is extensively conserved among filamentous ascomycetes.
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Affiliation(s)
- Kenya Tsuji
- Laboratory of Terrestrial Microbiology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
- Laboratory of Environmental Interface Technology of Filamentous Fungi, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Yuki Kitade
- Laboratory of Terrestrial Microbiology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Akira Yoshimi
- Laboratory of Terrestrial Microbiology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
- Laboratory of Environmental Interface Technology of Filamentous Fungi, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Chihiro Tanaka
- Laboratory of Terrestrial Microbiology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
- Terrestrial Microbiology and Systematics, Global Environmental Studies, Kyoto University, Kyoto, Japan
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Sunakawa Y, Satake H, Usher J, Jaimes Y, Miyamoto Y, Nakamura M, Kataoka M, Shiozawa M, Takagane A, Terazawa T, Watanabe T, Ishiguro K, Tanaka C, Takeuchi M, Fujii M, Danenberg K, Danenberg P, Lenz HJ, Sekikawa T, Ichikawa W. Dynamic changes in RAS gene status in circulating tumour DNA: a phase II trial of first-line FOLFOXIRI plus bevacizumab for RAS-mutant metastatic colorectal cancer (JACCRO CC-11). ESMO Open 2022; 7:100512. [PMID: 35688061 PMCID: PMC9271512 DOI: 10.1016/j.esmoop.2022.100512] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/26/2022] [Accepted: 04/28/2022] [Indexed: 12/22/2022] Open
Abstract
Background Few prospective studies have used liquid biopsy testing in RAS-mutant metastatic colorectal cancer (mCRC), and its clinical significance remains unknown. Therefore, this study aimed to carry out a biomarker analysis by liquid biopsy using updated data of the phase II trial of FOLFOXIRI plus bevacizumab as first-line chemotherapy for RAS-mutant mCRC. Materials and methods A total of 64 patients who received modified FOLFOXIRI regimen (irinotecan 150 mg/m2, oxaliplatin 85 mg/m2, levofolinate 200 mg/m2, and fluorouracil 2400 mg/m2) plus bevacizumab biweekly were enrolled. The primary endpoint was the objective response rate (ORR). Plasma samples were collected at pre-treatment, 8 weeks after treatment, and progression in participants included in the biomarker study. The levels of circulating tumour DNA (ctDNA) and specific KRAS and NRAS variants were evaluated using real-time PCR assays. Results There were 62 patients (median age: 62.5 years, 92% performance status 0, 27% right side) who were assessable for efficacy and 51 for biomarker analysis. ORR was 75.8% (95% confidence interval 65.1% to 86.5%). The median progression-free survival was 12.1 months, and the median overall survival (OS) was 30.2 months. In 78% of patients, RAS mutations disappeared in the ctDNA at 8 weeks after treatment; these patients tended to have better outcomes than those with RAS mutations. Interestingly, RAS mutations remained undetectable during progression in 62% of patients. Survival analysis indicated that the median OS from progression was significantly longer in patients with RAS mutation clearance than in those with RAS mutation in the ctDNA at disease progression (15.1 versus 7.3 months, hazard ratio: 0.21, P = 0.0046). Conclusions Our biomarker study demonstrated no RAS mutations in ctDNA at disease progression in 62% of patients with RAS-mutant mCRC. Both OS and post-progression survival were better in patients with clearance of RAS mutations in ctDNA after triplet-based chemotherapy. First-line FOLFOXIRI plus bevacizumab is effective for RAS-mutant mCRC with comparable efficacy in elderly patients. RAS mutations disappeared in ctDNA after intensive chemotherapy in 62% of patients with mCRC with RAS-mutant tumours. Survival time was longer in patients with RAS mutation clearance than in those with RAS mutations in ctDNA.
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Tanaka C, Kurose S, Takao N, Miyauchi T, Iwasaka J, Shiojima I, Oike Y, Kimura Y. Related factors and changes of angiopoietin-like protein 2 with chronic heart failure patients participating in phase III cardiac rehabilitation. Eur J Prev Cardiol 2022. [DOI: 10.1093/eurjpc/zwac056.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Private grant(s) and/or Sponsorship. Main funding source(s): the research grant D2 from Kansai Medical University
Objectives
Angiopoietin-like protein 2 (ANGPTL2) is a protein, whose structure is similar to that of angiopoietin, but binds to a different receptor. Overexpression of ANGPTL2 promotes chronic inflammation and relates to the development of aging-related diseases. ANGPTL2 has been reported to be mainly secreted by adipose tissue. Although ANGPTL2 has been implicated in the pathogenesis of heart failure, there are no studies about serum ANGPTL2 levels in patients with heart failure participating in cardiac rehabilitation program. The aim of this study was to investigate the characteristics, related factors and changes of ANGPTL2 in patients with chronic heart failure during phase III of cardiac rehabilitation program.
Methods
The subjects included 57 patients (70.1 ± 10.2 years old; 46 men) with chronic heart failure whose serum ANGPTL2 levels were measured during the maintenance phase of cardiac rehabilitation program. Furthermore, we classified 25 patients (70.6 ± 7.5 years old; 23 men) from the 6-month course into a reduced group and an unchanged group to characterize change in ANGPTL2. We excluded patients who were admitted or discharged within 3 months of the evaluation of serum ANGPTL2. We evaluated exercise tolerance using the cardiopulmonary exercise test, grip strength, body composition using a body composition analyzer, blood examinations, and echocardiography. Serum ANGPTL2 was measured by solid-phase sandwich enzyme-linked immunosorbent assay (ELISA).
Results
The median value of ANGPTL2 was 4.05 ng/ml. ANGPTL2 was positively correlated with body weight, body mass index, body fat mass, body fat percentage, C-reactive protein (CRP) and total protein (TP) levels, and negatively correlated with skeletal muscle mass percentage and anaerobic threshold (AT). From the result of the logistic regression analysis, AT (OR=0.68, 95% CI:0.47-0.97and TP (OR=20.1, 95% CI:2.52-160.63) were extracted as independent factors related to the level of ANGPTL2. In addition, overall serum ANGPTL2 levels decreased significantly after 6 months. Changes in ANGPTL2 in the reduced group showed a positive correlation between baseline peak VO2, left ventricular ejection fraction and skeletal muscle rate, and a negative correlation with baseline ANGPTL2, CRP, body fat mass. In an unchanged group, HbA1c increased, but no significant change was observed in other factors.
Conclusions
Exercise tolerance in patients with chronic heart failure during maintenance phase might be related to the inflammation marker ANGPTL2. Serum ANGPTL2 levels with stable chronic heart failure patients decreased significantly 6 months after continued cardiac rehabilitation.
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Affiliation(s)
- C Tanaka
- Kansai Medical University, Division of Cardiology, Department of Medicine II, Osaka, Japan
| | - S Kurose
- Kansai Medical University, Department of Health Science, Osaka, Japan
| | - N Takao
- Kansai Medical University, Department of Health Science, Osaka, Japan
| | - T Miyauchi
- Kansai Medical University, Department of Health Science, Osaka, Japan
| | - J Iwasaka
- Kansai Medical University, Division of Cardiology, Department of Medicine II, Osaka, Japan
| | - I Shiojima
- Kansai Medical University, Division of Cardiology, Department of Medicine II, Osaka, Japan
| | - Y Oike
- Kumamoto University, Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto, Japan
| | - Y Kimura
- Kansai Medical University, Department of Health Science, Osaka, Japan
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Tameishi M, Ishikawa H, Tanaka C, Kobori T, Urashima Y, Ito T, Obata T. Ezrin Contributes to the Plasma Membrane Expression of PD-L1 in A2780 Cells. J Clin Med 2022; 11:jcm11092457. [PMID: 35566582 PMCID: PMC9100183 DOI: 10.3390/jcm11092457] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/20/2022] [Accepted: 04/25/2022] [Indexed: 01/30/2023] Open
Abstract
Programmed death ligand–1 (PD–L1) is one of the immune checkpoint molecule localized on the plasma membrane of numerous cancer cells that negatively regulates T-cell-mediated immunosurveillance. Despite the remarkable efficacy and safety profile of immune checkpoint inhibitors (ICIs), such as anti-PD–L1 antibodies, restricted poor therapeutic responses to ICIs are often observed in patients with ovarian cancer. Because higher expression of PD–L1 in advanced ovarian cancer is associated with a decreased survival rate, identifying the potential molecules to regulate the plasma membrane expression of PD–L1 may provide a novel therapeutic strategy to improve the efficacy of ICIs against ovarian cancers. Here, we reveal the involvement of the ezrin/radixin/moesin (ERM) family, which crosslinks transmembrane proteins with the actin cytoskeleton by serving as a scaffold protein, in the plasma membrane expression of PD–L1 in the human epithelial ovarian cancer cell line A2780. Our results demonstrate that PD–L1 and all three ERMs were expressed at the mRNA and protein levels in A2780 cells, and that PD–L1 was highly colocalized with ezrin and moesin, but moderately with radixin, in the plasma membrane. Interestingly, RNA interference-mediated gene silencing of ezrin, but not of radixin or moesin, substantially reduced the plasma membrane expression of PD–L1 without altering its mRNA expression. In conclusion, our results indicate that ezrin may be responsible for the plasma membrane expression of PD–L1, possibly by serving as a scaffold protein in A2780 cells. Ezrin is a potential therapeutic target for improving the efficacy of ICIs against ovarian cancers.
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Affiliation(s)
- Mayuka Tameishi
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi 584-8540, Japan; (M.T.); (H.I.); (C.T.); (T.K.); (Y.U.)
| | - Honami Ishikawa
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi 584-8540, Japan; (M.T.); (H.I.); (C.T.); (T.K.); (Y.U.)
| | - Chihiro Tanaka
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi 584-8540, Japan; (M.T.); (H.I.); (C.T.); (T.K.); (Y.U.)
| | - Takuro Kobori
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi 584-8540, Japan; (M.T.); (H.I.); (C.T.); (T.K.); (Y.U.)
| | - Yoko Urashima
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi 584-8540, Japan; (M.T.); (H.I.); (C.T.); (T.K.); (Y.U.)
| | - Takuya Ito
- Laboratory of Natural Medicines, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi 584-8540, Japan;
| | - Tokio Obata
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi 584-8540, Japan; (M.T.); (H.I.); (C.T.); (T.K.); (Y.U.)
- Correspondence: ; Tel.: +81-721-24-9371
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Satake H, Tsuji A, Tanaka C, Takahashi T, Wakamura K, Yoshida T, Murata K, Shindo Y, Ishikawa Y, Konishi K, Kochi M, Sagawa T, Kotaka M, Kubota Y, Sunakawa Y, Sekikawa T, Nakamura M, Takeuchi M, Ichikawa W, Fujii M. Tumor response of FOLFOXIRI plus cetuximab versus bevacizumab in RAS wild-type metastatic colorectal cancer: The subgroup-analysis of DEEPER trial (JACCRO CC-13). J Clin Oncol 2022. [DOI: 10.1200/jco.2022.40.4_suppl.109] [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: 11/20/2022] Open
Abstract
109 Background: Triplet regimen, FOLFOXIRI, combined with bevacizumab (bev) or panitumumab has been shown to be superior in terms of early tumor shrinkage and depth of response (DpR) compared to doublet combinations in patients with RAS wild-type metastatic colorectal cancer (mCRC). We performed a randomized phase II study, DEEPER trial (JACCRO CC-13)[NCT02515734], to investigate the efficacy and safety of cetuximab (cet) vs. bevacizumab (bev) in combination with modified (m)-FOLFOXIRI (irinotecan 150 mg/m2, oxaliplatin 85 mg/m2, 5-FU 2400 mg/m2) in previously untreated mCRC patients with RAS wild-type tumors (Tsuji A, et al. ASCO 2021). Methods: The primary endpoint was DpR during the entire course. Secondary endpoints included overall response rate (ORR), disease control rate, R0 resection rate, progression-free survival, and overall survival. A post-hoc subgroup analysis by PS, tumor sidedness, age, and location of metastases was performed to evaluate the efficacy of triplet plus cet vs. bev regimen. Results: A total of 359 patients were enrolled between July 2015 and June 2019. For the full analysis set (median age 65y, 64% male, PS0/1: 91%/9%, left/right primary: 83%/17%), 173 and 175 patients were randomly assigned to the cet and bev arms, respectively. Median DpR was 57.4% vs. 46.0% ( p = 0.001), and the ORR was 69.1% vs. 71.7% ( p = 0.60), in cet vs. bev, respectively. The subgroup analysis was present in the table. There was no significant difference in terms of ORR and R0 resection rate between groups according to PS, tumor sidedness, age, and liver metastases (LM). In patients with only LM, the R0 resection rate of cet vs. bev was 25.0% vs. 14.8% ( p = 0.21). Conclusions: The m-FOLFOXIRI plus cet showed to be significantly superior to the m-FOLFOXIRI plus bev in terms of DpR in first-line treatment for RAS wild-type mCRC. The better DpR of m-FOLFOXIRI plus cet was evident for RAS wild-type mCRC patients with left-sided tumors, LM or under 70 years old. Clinical trial information: UMIN000018217.[Table: see text]
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Affiliation(s)
- Hironaga Satake
- Department of Medical Oncology, Kobe City Medical Center General Hospital, Kobe, Japan
| | - Akihito Tsuji
- Department of Medical Oncology, Kagawa University Hospital, Takamatsu, Japan
| | - Chihiro Tanaka
- Department of Surgery, Gifu Prefectural General Medical Center, Gifu, Japan
| | - Takao Takahashi
- Department of Surgical Oncology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Kunihiko Wakamura
- Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama, Japan
| | - Taichi Yoshida
- Department of Clinical Oncology, Akita University, Graduate School of Medicine, Akita, Japan
| | - Kohei Murata
- Department of Surgery, Kansai Rosai Hospital, Amagasaki, Japan
| | - Yoshiaki Shindo
- Department of Gastroenterological Surgery, Nakadori General Hospital, Akita, Japan
| | - Yasuhide Ishikawa
- Department of Digestive Surgery, Takamatsu Red Cross Hospital, Takamatsu, Japan
| | - Ken Konishi
- Department of Surgery, Hyogo Prefectural Nishinomiya Hospital, Nishinomiya, Japan
| | - Mitsugu Kochi
- Department of Digestive Surgery, Nihon University Itabashi Hospital, Tokyo, Japan
| | - Tamotsu Sagawa
- Division of Gastroenterology, National Hospital Organization Hokkaido Cancer Center, Sapporo, Japan
| | | | - Yutaro Kubota
- Division of Medical Oncology, Showa University Hospital, Tokyo, Japan
| | - Yu Sunakawa
- Department of Clinical Oncology, St. Marianna University School of Medicine, Kawasaki, CA, Japan
| | - Takashi Sekikawa
- Division of Medical Oncology, Showa University Fujigaoka Hospital, Yokohama, Japan
| | - Masato Nakamura
- Aizawa Comprehensive Cancer Center, Aizawa Hospital, Matsumoto, Japan
| | - Masahiro Takeuchi
- Graduate School of Mathematical Sciences, The University of Tokyo, Tokyo, Japan
| | - Wataru Ichikawa
- Division of Medical Oncology, Showa University Fujigaoka Hospital, Yokohama, Japan
| | - Masashi Fujii
- Department of Digestive Surgery, Nihon University School of Medicine, Tokyo, Japan
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Matsuhashi N, Takahashi T, Tanaka C, Yawata K, Yamada M, Iwata Y, Kiyama S, Mizutani C, Tajima JY, Ishihara T, Yoshida K. Phase II Study of Preoperative Chemoradiotherapy With S-1 Plus Oxaliplatin for Locally Advanced Rectal Cancer (PerSeUS-RC01). Anticancer Res 2021; 41:6247-6257. [PMID: 34848480 DOI: 10.21873/anticanres.15445] [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: 07/29/2021] [Revised: 09/07/2021] [Accepted: 09/20/2021] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM We report the end results of a study evaluating the safety and efficacy of preoperative chemoradiotherapy with S-1 plus oxaliplatin. PATIENTS AND METHODS Eligible patients had histopathologically confirmed locally advanced rectal carcinoma (LARC; cT3-T4, any N). They received oral S-1 (80 mg/m2/day on days 1-5, 8-12, 22-26, and 29-33) and oxaliplatin by infusion (50 mg/m2/day on days 1, 8, 22, and 29) along with radiotherapy (1.8 Gy/day, total dose: 45 Gy/25 fractions). A chemotherapy gap was included in the third week of radiotherapy. The study endpoint was pathological response rate (Grade 2, 3). Secondary endpoints included rates of pathologic complete response (pCR), R0 resection, disease-free survival (DFS), overall survival (OS), local and distant recurrence, and safety and relative dose intensity. RESULTS The study enrolled 23 patients at three Centres in Gifu, Japan. All patients received chemoradiotherapy, and 22 underwent surgery. Rates of pathological response, R0 resection, and pathological down-staging were 56.5% (13/23), 95.7% (22/23), and 63.6% (14/22), respectively. There were no grade 4 adverse events, but grade 3 events occurred in 21.7% of patients. The cumulative 3-year local recurrence rate was 8.7%. Distant metastasis occurred in 10 (43.5%) patients, 2 (8.7%) from local recurrence and 2 from secondary pancreatic cancer and lung cancer. There were 8 patients with lung metastasis, 2 with liver metastasis, one with ovarian metastasis, and one with bone metastasis. Three-year rates of DFS and OS were 51.1% (median follow-up 34.3 months) and 91.1% (45.2 months), respectively. CONCLUSION The study showed high pathological response rate without severe toxicity and good follow-up results. Unexpectedly, however, this regimen could not control local recurrence and distant metastasis. Nevertheless, adding oxaliplatin to preoperative chemoradiotherapy with S-1 in patients with LARC appears feasible and may safely result in better local control than standard treatment. The study suggests adding treatment with induction chemotherapy in consideration of CEA level and N factor.
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Affiliation(s)
- Nobuhisa Matsuhashi
- Department of Gastroenterological Surgery, Gifu University Graduate School of Medicine, Gifu, Japan;
| | - Takao Takahashi
- Department of Gastroenterological Surgery, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Chihiro Tanaka
- Department of Surgery, Gifu Prefectural General Medical Center, Gifu, Japan
| | | | - Makoto Yamada
- Department of Surgery, Gifu Municipal Hospital, Gifu, Japan
| | - Yoshinori Iwata
- Department of Surgery, Gifu Prefectural General Medical Center, Gifu, Japan
| | - Shigeru Kiyama
- Department of Gastroenterological Surgery, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Chika Mizutani
- Department of Gastroenterological Surgery, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Jesse Yu Tajima
- Department of Gastroenterological Surgery, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Takuma Ishihara
- Innovative and Clinical Research Promotion Center, Gifu University Hospital, Gifu, Japan
| | - Kazuhiro Yoshida
- Department of Gastroenterological Surgery, Gifu University Graduate School of Medicine, Gifu, Japan
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Tsuji K, Kitade Y, Sumita T, Tanaka C. An exocyst component, Sec5, is essential for ascospore formation in Bipolaris maydis. MYCOSCIENCE 2021; 62:289-296. [PMID: 37089464 PMCID: PMC9721515 DOI: 10.47371/mycosci.2021.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 05/03/2021] [Accepted: 05/07/2021] [Indexed: 11/16/2022]
Abstract
In this study, we identified Sec5 in Bipolaris maydis, a homologue of Sec5 in Saccharomyces cerevisiae and a possible exocyst component of the fungus. To examine how Sec5 affects the life cycle of B. maydis, we generated null mutant strains of the gene (Δsec5). The Δsec5 strains showed a strong reduction in hyphal growth and a slight reduction in pathogenicity. In sexual reproduction, they possessed the ability to develop pseudothecia. However, all ascospores were aborted in any of the asci obtained from crosses between Δsec5 and the wild-type. Our cytological study revealed that the abortion was caused by impairments of the post-meiotic stages in ascospore development, where ascospore delimitation and young spore elongation occur.
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Affiliation(s)
- Kenya Tsuji
- Graduate School of Agriculture, Kyoto University
| | - Yuki Kitade
- Graduate School of Agriculture, Kyoto University
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Tanaka C, Kobori T, Tameishi M, Urashima Y, Ito T, Obata T. Ezrin Modulates the Cell Surface Expression of Programmed Cell Death Ligand-1 in Human Cervical Adenocarcinoma Cells. Molecules 2021; 26:5648. [PMID: 34577118 PMCID: PMC8469114 DOI: 10.3390/molecules26185648] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/03/2021] [Accepted: 09/15/2021] [Indexed: 01/01/2023] Open
Abstract
Cancer cells employ programmed cell death ligand-1 (PD-L1), an immune checkpoint protein that binds to programmed cell death-1 (PD-1) and is highly expressed in various cancers, including cervical carcinoma, to abolish T-cell-mediated immunosurveillance. Despite a key role of PD-L1 in various cancer cell types, the regulatory mechanism for PD-L1 expression is largely unknown. Understanding this mechanism could provide a novel strategy for cervical cancer therapy. Here, we investigated the influence of ezrin/radixin/moesin (ERM) family scaffold proteins, crosslinking the actin cytoskeleton and certain plasma membrane proteins, on the expression of PD-L1 in HeLa cells. Our results showed that all proteins were expressed at mRNA and protein levels and that all ERM proteins were highly colocalized with PD-L1 in the plasma membrane. Interestingly, immunoprecipitation assay results demonstrated that PD-L1 interacted with ERM as well as actin cytoskeleton proteins. Furthermore, gene silencing of ezrin, but not radixin and moesin, remarkably decreased the protein expression of PD-L1 without affecting its mRNA expression. In conclusion, ezrin may function as a scaffold protein for PD-L1; regulate PD-L1 protein expression, possibly via post-translational modification in HeLa cells; and serve as a potential therapeutic target for cervical cancer, improving the current immune checkpoint blockade therapy.
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Affiliation(s)
- Chihiro Tanaka
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi 584-8540, Osaka, Japan; (C.T.); (M.T.); (Y.U.)
| | - Takuro Kobori
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi 584-8540, Osaka, Japan; (C.T.); (M.T.); (Y.U.)
| | - Mayuka Tameishi
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi 584-8540, Osaka, Japan; (C.T.); (M.T.); (Y.U.)
| | - Yoko Urashima
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi 584-8540, Osaka, Japan; (C.T.); (M.T.); (Y.U.)
| | - Takuya Ito
- Laboratory of Natural Medicines, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi 584-8540, Osaka, Japan;
| | - Tokio Obata
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi 584-8540, Osaka, Japan; (C.T.); (M.T.); (Y.U.)
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Yoshimi A, Hagiwara D, Ono M, Fukuma Y, Midorikawa Y, Furukawa K, Fujioka T, Mizutani O, Sato N, Miyazawa K, Maruyama JI, Marui J, Yamagata Y, Nakajima T, Tanaka C, Abe K. Downregulation of the ypdA Gene Encoding an Intermediate of His-Asp Phosphorelay Signaling in Aspergillus nidulans Induces the Same Cellular Effects as the Phenylpyrrole Fungicide Fludioxonil. Front Fungal Biol 2021; 2:675459. [PMID: 37744139 PMCID: PMC10512292 DOI: 10.3389/ffunb.2021.675459] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 07/26/2021] [Indexed: 09/26/2023]
Abstract
Many eukaryotic histidine-to-aspartate (His-Asp) phosphorelay systems consist of three types of signal transducers: a His-kinase (HK), a response regulator (RR), and a histidine-containing phosphotransfer intermediate (HPt). In general, the HPt acts as an intermediate between the HK and the RR and is indispensable for inducing appropriate responses to environmental stresses. In a previous study, we attempted but were unable to obtain deletion mutants of the ypdA gene in order to characterize its function in the filamentous fungus Aspergillus nidulans. In the present study, we constructed the CypdA strain in which ypdA expression is conditionally regulated by the A. nidulans alcA promoter. We constructed CypdA strains with RR gene disruptions (CypdA-sskAΔ, CypdA-srrAΔ, and CypdA-sskAΔsrrAΔ). Suppression of YpdA induced by ypdA downregulation activated the downstream HogA mitogen-activated protein kinase cascade. YpdA suppression caused severe growth defects and abnormal hyphae, with features such as enhanced septation, a decrease in number of nuclei, nuclear fragmentation, and hypertrophy of vacuoles, both regulated in an SskA-dependent manner. Fludioxonil treatment caused the same cellular responses as ypdA suppression. The growth-inhibitory effects of fludioxonil and the lethality caused by ypdA downregulation may be caused by the same or similar mechanisms and to be dependent on both the SskA and SrrA pathways.
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Affiliation(s)
- Akira Yoshimi
- New Industry Creation Hatchery Center, Tohoku University, Sendai, Japan
- Laboratory of Environmental Interface Technology of Filamentous Fungi, Kyoto University, Kyoto, Japan
| | - Daisuke Hagiwara
- New Industry Creation Hatchery Center, Tohoku University, Sendai, Japan
- Medical Mycology Research Center, Chiba University, Chiba, Japan
| | - Miyako Ono
- Laboratory of Applied Microbiology, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Yasuyuki Fukuma
- Laboratory of Applied Microbiology, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Yura Midorikawa
- Laboratory of Applied Microbiology, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Kentaro Furukawa
- Laboratory of Enzymology, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Tomonori Fujioka
- Laboratory of Enzymology, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Osamu Mizutani
- Laboratory of Applied Microbiology, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Natsuko Sato
- Laboratory of Enzymology, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Ken Miyazawa
- Laboratory of Applied Microbiology, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Jun-ichi Maruyama
- Department of Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
- Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, Tokyo, Japan
| | - Junichiro Marui
- New Industry Creation Hatchery Center, Tohoku University, Sendai, Japan
| | - Youhei Yamagata
- Laboratory of Enzymology, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Tasuku Nakajima
- Laboratory of Enzymology, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Chihiro Tanaka
- Terrestrial Microbial Ecology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Keietsu Abe
- New Industry Creation Hatchery Center, Tohoku University, Sendai, Japan
- Laboratory of Applied Microbiology, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
- Laboratory of Enzymology, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
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Kobori T, Tanaka C, Tameishi M, Urashima Y, Ito T, Obata T. Role of Ezrin/Radixin/Moesin in the Surface Localization of Programmed Cell Death Ligand-1 in Human Colon Adenocarcinoma LS180 Cells. Pharmaceuticals (Basel) 2021; 14:ph14090864. [PMID: 34577564 PMCID: PMC8467328 DOI: 10.3390/ph14090864] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/23/2021] [Accepted: 08/26/2021] [Indexed: 12/30/2022] Open
Abstract
Programmed cell death ligand-1 (PD-L1), an immune checkpoint protein highly expressed on the cell surface in various cancer cell types, binds to programmed cell death-1 (PD-1), leading to T-cell dysfunction and tumor survival. Despite clinical successes of PD-1/PD-L1 blockade therapies, patients with colorectal cancer (CRC) receive little benefit because most cases respond poorly. Because high PD-L1 expression is associated with immune evasion and poor prognosis in CRC patients, identifying potential modulators for the plasma membrane localization of PD-L1 may represent a novel therapeutic strategy for enhancing the efficacy of PD-1/PD-L1 blockade therapies. Here, we investigated whether PD-L1 expression in human colorectal adenocarcinoma cells (LS180) is affected by ezrin/radixin/moesin (ERM), functioning as scaffold proteins that crosslink plasma membrane proteins with the actin cytoskeleton. We observed colocalization of PD-L1 with all three ERM proteins in the plasma membrane and detected interactions involving PD-L1, the three ERM proteins, and the actin cytoskeleton. Furthermore, gene silencing of ezrin and radixin, but not of moesin, substantially decreased the expression of PD-L1 on the cell surface without affecting its mRNA level. Thus, in LS180 cells, ezrin and radixin may function as scaffold proteins mediating the plasma membrane localization of PD-L1, possibly by post-translational modification.
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Affiliation(s)
- Takuro Kobori
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi, Osaka 584-8540, Japan; (T.K.); (C.T.); (M.T.); (Y.U.)
| | - Chihiro Tanaka
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi, Osaka 584-8540, Japan; (T.K.); (C.T.); (M.T.); (Y.U.)
| | - Mayuka Tameishi
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi, Osaka 584-8540, Japan; (T.K.); (C.T.); (M.T.); (Y.U.)
| | - Yoko Urashima
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi, Osaka 584-8540, Japan; (T.K.); (C.T.); (M.T.); (Y.U.)
| | - Takuya Ito
- Laboratory of Natural Medicines, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi, Osaka 584-8540, Japan;
| | - Tokio Obata
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi, Osaka 584-8540, Japan; (T.K.); (C.T.); (M.T.); (Y.U.)
- Correspondence: ; Tel.: +81-721-24-9371
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Adsuara de Sousa LF, Misse RG, De Macedo Dos Santos L, Fontes Baptista A, Tanaka C, D’andréa Greve JM, Katsuyuki Shinjo S. POS0887 TRANSCRANIAL ELECTRICAL STIMULATION IS SAFE AND EFFICIENT IN PATIENTS WITH SYSTEMIC AUTOIMMUNE MYOPATHIES. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:There is currently few information regarding rehabilitation in patients with systemic autoimmune myopathies (SAMs). Transcranial direct current stimulation (tDCS) has shown promising results for the motor performance of healthy individuals as for patients with, e.g., post-stroke hemiparetic limbs.Objectives:The present study was aimed to assessing the safety and efficiency of tDCS in patients with SAMs.Methods:This study is a prospective, randomized, sham controlled, double blind, and clinical trial with ethical approval. Eighteen adult patients with dermatomyositis, polymyositis, antisynthetase syndrome or immune-mediated necrotizing myopathies in remission or with minimal disease activity were enrolled from 2018 to 2019. Patients were allocated randomly in two groups to receive sham or active tDCS with 2mA amplitude submitted for 20 minutes for three consecutive days. The 5x7cm sponge-electrodes were positioned with the anode over the left (C1) or right (C2) - contralateral to the dominant limb, whereas the cathode over the FP2 or FP3, respectively (10-10 EEG electrodes placement). The groups were evaluated in four moments: pre-stimulation, and 30 minutes, 3 weeks and 8 weeks post-tDCS. They were evaluated in the different moments with International Myositis Assessment and Clinical Studies Group set scores, Short-Form health survey (SF-36), state-trait anxiety inventory (STAI), Beck depression inventory (BDI), timed up-and-go test (TUG), time-stands test (TST), isokinetic extension and flexion testing of bilateral knee and elbow. A specific security questionnaire for tDCS was used after the active or sham stimulation in all patients.Results:The demographic data, kind of myositis, disease duration, and disease status (all with low disease activity) were comparable between both active and sham tDCS groups. After interventions, there was improvement of values of patient’s VAS (P=0.042) and serum levels of creatine phosphokinase (P=0.005), independent of the group. Moreover, in active tDCS group, the physical aspects of SF-36 in week 8 (P<0.001), mean and better TST at each evaluation (P<0.001), absolute peak tork (P<0.001) and peak tork adjusted for body weight values (P<0.001) of stimulated inferior limb extension also improved. No differences were observed in the STAI, BDI, or TUG in both groups. The patients’ adherence to the protocol was 100% and no adverse event was reported, including disease relapsing.Conclusion:This unprecedented study evidences the safety of tDCS, besides the potential efficiency in improving rehabilitation of tDCS in SAMs. More studies with a large samples and period of tDCS sessions are necessaries to corroborate with the present study.References:[1]Lundberg IE, et al. 2017 European league against rheumatism/ American College of Rheumatology classification criteria for adult and juvenile idiopathic inflammatory myopathies and their major subgroups. Arthritis Rheum. 2017;69:2271-82.[2]Tanaka S, et al. Single session of transcranial direct current stimulation transiently increases knee extensor force in patients with hemiparetic stroke. Neurorehabil Neural Repair. 2011;25:565-9.Acknowledgements:This work was supported by the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) 303.379/2018-9, Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) 2019/11776-6, Faculdade de Medicina da USP/SP to SKS.Disclosure of Interests:None declared
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Kobori T, Tameishi M, Tanaka C, Urashima Y, Obata T. Subcellular distribution of ezrin/radixin/moesin and their roles in the cell surface localization and transport function of P-glycoprotein in human colon adenocarcinoma LS180 cells. PLoS One 2021; 16:e0250889. [PMID: 33974673 PMCID: PMC8112653 DOI: 10.1371/journal.pone.0250889] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 04/15/2021] [Indexed: 12/20/2022] Open
Abstract
The ezrin/radixin/moesin (ERM) family proteins act as linkers between the actin cytoskeleton and P-glycoprotein (P-gp) and regulate the plasma membrane localization and functionality of the latter in various cancer cells. Notably, P-gp overexpression in the plasma membrane of cancer cells is a principal factor responsible for multidrug resistance and drug-induced mutagenesis. However, it remains unknown whether the ERM proteins contribute to the plasma membrane localization and transport function of P-gp in human colorectal cancer cells in which the subcellular localization of ERM has yet to be determined. This study aimed to determine the gene expression patterns and subcellular localization of ERM and P-gp and investigate the role of ERM proteins in the plasma membrane localization and transport function of P-gp using the human colon adenocarcinoma cell line LS180. Using real-time reverse transcription polymerase chain reaction and immunofluorescence analyses, we showed higher levels of ezrin and moesin mRNAs than those of radixin mRNA in these cells and preferential distribution of all three ERM proteins on the plasma membrane. The ERM proteins were highly colocalized with P-gp. Additionally, we show that the knockdown of ezrin, but not of radixin and moesin, by RNA interference significantly decreased the cell surface expression of P-gp in LS180 cells without affecting the mRNA expression of P-gp. Furthermore, gene silencing of ezrin substantially increased the intracellular accumulation of rhodamine123, a typical P-gp substrate, with no alterations in the plasma membrane permeability of Evans blue, a passive transport marker. In conclusion, ezrin may primarily regulate the cell surface localization and transport function of P-gp as a scaffold protein without influencing the transcriptional activity of P-gp in LS180 cells. These findings should be relevant for treating colorectal cancer, which is the second leading cause of cancer-related deaths in males and females combined.
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Affiliation(s)
- Takuro Kobori
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi, Osaka, Japan
| | - Mayuka Tameishi
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi, Osaka, Japan
| | - Chihiro Tanaka
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi, Osaka, Japan
| | - Yoko Urashima
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi, Osaka, Japan
| | - Tokio Obata
- Laboratory of Clinical Pharmaceutics, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi, Osaka, Japan
- * E-mail:
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Hayashi H, Nagao N, Yamazaki K, Asai R, Tanaka C, Kawai M. Spontaneous esophageal rupture managed with endoscopic closure using an over-the-scope clip: A case report. Int J Surg Case Rep 2021; 80:105691. [PMID: 33640637 PMCID: PMC7933483 DOI: 10.1016/j.ijscr.2021.105691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 02/04/2021] [Accepted: 02/20/2021] [Indexed: 11/11/2022] Open
Abstract
Spontaneous esophageal rupture is usually treated surgically. However, endoscopic interventions can be performed with good outcomes. Approach is based on degree of infection in the mediastinum and thoracic cavity. We used an over-the-scope clip for esophageal rupture localized to mediastinum. The esophageal perforation was closed once the inflammatory response subsided.
Introduction and importance Spontaneous esophageal rupture is a life-threatening condition caused by a sudden increase in the intraesophageal pressure. While surgery is the mainstay of management for spontaneous esophageal ruptures, in recent years, an increasing number of patients have been managed with endoscopic interventions. We report a case of spontaneous esophageal rupture managed with endoscopic closure using an over-the-scope clip (Ovesco Endoscopy AG, Tübingen, Germany). Case presentation A 68-year-old female presented with epigastric pain and left-sided back pain following vomiting. A computed tomography scan revealed mediastinal emphysema and an esophagogram showed leakage from the left side of the lower thoracic esophagus into the mediastinum. The patient was diagnosed with spontaneous esophageal rupture localized to the mediastinum and was treated conservatively. However, she had persistent fever and continuing esophageal leakage on the esophagogram. On the 12th day of admission, a gastrointestinal endoscopy was performed, which found a 10-mm full-thickness longitudinal laceration on the left side of the lower esophagus. Endoscopic closure using an over-the-scope clip was performed. The next day, the patient became afebrile. One week later, esophagogram revealed slight residual leakage and an additional endoscopic closure using an over-the-scope clip was performed; the patient subsequently had an uneventful recovery and was discharged on the 44th day of admission. Clinical discussion Endoscopic closure using an over-the-scope clip led to a good outcome in this patient with spontaneous esophageal rupture. Conclusion Endoscopic closure using an over-the-scope clip is an effective and minimally invasive technique for selected patients with spontaneous esophageal rupture.
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Affiliation(s)
- Hirokatsu Hayashi
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1 Noisshiki, Gifu-City, Gifu-Prefecture, 500-8717, Japan.
| | - Narutoshi Nagao
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1 Noisshiki, Gifu-City, Gifu-Prefecture, 500-8717, Japan.
| | - Kenji Yamazaki
- Department of Gastroenterology, Gifu Prefectural General Medical Center, 4-6-1 Noisshiki, Gifu-City, Gifu-Prefecture, 500-8717, Japan.
| | - Ryuichi Asai
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1 Noisshiki, Gifu-City, Gifu-Prefecture, 500-8717, Japan.
| | - Chihiro Tanaka
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1 Noisshiki, Gifu-City, Gifu-Prefecture, 500-8717, Japan.
| | - Masahiko Kawai
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1 Noisshiki, Gifu-City, Gifu-Prefecture, 500-8717, Japan.
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Yoshida H, Tanaka C. An arabinose-induced enhancement of asexual reproduction and concomitant changes in metabolic state in the filamentous fungus Bipolaris maydis. Microbiology (Reading) 2021; 167. [PMID: 33555250 DOI: 10.1099/mic.0.001009] [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] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
l-Arabinose, a major constituent pentose of plant cell-wall polysaccharides, has been suggested to be a less preferred carbon source for fungi but to be a potential signalling molecule that can cause distinct genome-wide transcriptional changes in fungal cells. Here, we explore the possibility that this unique pentose influences the morphological characteristics of the phytopathogenic fungus Bipolaris maydis strain HITO7711. When grown on plate media under different sugar conditions, the mycelial dry weight of cultures on l-arabinose was as low as that with no sugar, suggesting that l-arabinose does not substantially contribute to vegetative growth. However, the intensity of conidiation on l-arabinose was comparable to or even higher than that on d-glucose and on d-xylose, in contrast to the poor conidiation under the no-sugar condition. To explore the physiological basis of the passive growth and active conidiation on l-arabinose, we next investigated cellular responses of the fungus to these sugar conditions. Transcriptional analysis of genes related to carbohydrate metabolism showed that l-arabinose stimulates carbohydrate utilization through the hexose monophosphate shunt (HMP shunt), a catabolic pathway parallel to glycolysis and which participates in the generation of the reducing agent NADPH (the reduced form of nicotinamide adenine dinucleotide phosphate). Then, the HMP shunt was impaired by disrupting the related gene BmZwf1, which encodes glucose-6-phosphate dehydrogenase in this fungus. The resulting mutants on l-arabinose showed remarkably decreased conidiation, but a conversely increased mycelial dry weight compared with the wild-type. Our study demonstrates that l-arabinose acts to enhance resource allocation to asexual reproduction in B. maydis HITO7711 at the cost of vegetative growth, and suggests that this is mediated by the concomitant stimulation of the HMP shunt.
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Affiliation(s)
- Hiroshi Yoshida
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Chihiro Tanaka
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
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Tomita N, Sasaki S, Kusumoto T, Watanabe J, Sakamoto Y, Yoshida K, Maeda A, Teshima J, Yokota M, Tanaka C, Yamauchi J, Uetake H, Itabashi M, Takahashi K, Baba H, Kotake K, Boku N, Aiba K, Morita S, Sugihara K. Final results of the ACTS-CC 02 trial: A randomized phase III trial of S-1/oxaliplatin (SOX) versus UFT/leucovorin as adjuvant chemotherapy for high-risk stage III colon cancer. J Clin Oncol 2021. [DOI: 10.1200/jco.2021.39.3_suppl.59] [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: 11/20/2022] Open
Abstract
59 Background: As previously reported (Sunami E, et al. Clin Colorectal Cancer. 2020), the ACTS-CC 02 trial demonstrated that S-1 and oxaliplatin (SOX) was not superior to UFT/leucovorin (LV) in terms of disease-free survival (DFS) as adjuvant chemotherapy for high-risk stage III colon cancer (any T, N2, or positive nodes around the origin of the feeding arteries). We now report the final overall survival (OS) after a median follow-up of more than 6 years. Methods: A total of 966 patients with high-risk stage III colon cancer were randomly assigned to receive either UFT/LV (300–600 mg/day of UFT according to body surface area [BSA] and 75 mg/day of LV on days 1-28, every 35 days, 5 courses) or SOX (100 mg/m2 of oxaliplatin on day 1 and 80–120 mg/day of S-1 according to BSA on days 1-14, every 21 days, 8 courses). The primary endpoint was DFS. Patients’ data were updated in February 2020. Results: The subjects of this final efficacy analysis were 955 patients (478 in the UFT/LV group and 477 in the SOX group). Totally, Stage IIIA/IIIB/IIIC were 1.3%/50.2%/48.6% and T1/2/3/4 were 1.5%/4.0%/61.8%/32.7%. With median follow-up time of 74.3 months, the 5-year OS rate was 78.3% in the UFT/LV group and 79.1% in the SOX group (HR: 0.97; 95% CI: 0.76-1.24; p = 0.8175). The 5-year DFS rate was 55.2% in the UFT/LV group and 58.1% in the SOX group (HR: 0.92; 95% CI: 0.76-1.11; p = 0.3973). In an exploratory analysis, the 5-year OS rate in patients with T4 disease was 65.2% and 70.8% in the UFT/LV group and SOX group, respectively (HR: 0.81; 95% CI: 0.56-1.17), and the 5-year DFS rate was 45.4% and 50.5% (HR: 0.87; 95% CI: 0.65-1.19), respectively. Notably, in patients with T4N2b disease, the 5-year OS rate was 51.0% and 64.1% in the UFT/LV group and SOX group, (HR: 0.72; 95% CI: 0.40-1.31) and the 5-year DFS rate was 31.1% and 37.2% (HR: 0.87; 95% CI: 0.50-1.31), respectively. Conclusions: In Japanese patients with high-risk stage III colon cancer, the 5-year OS rate was similar in the UFT/LV group and SOX group. However, the oxaliplatin-based regimen was suggested to be more effective for DFS and OS in patients with advanced disease, such as T4N2b. Clinical trial information: JapicCTI-101073.
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Affiliation(s)
- Naohiro Tomita
- Division of Lower GI Surgery, Department of Surgery, Hyogo College of Medicine, Hyogo, Japan
| | - Shin Sasaki
- Department of Surgical Oncology, Japanese Red Cross Medical Center, Tokyo, Japan
| | - Tetsuya Kusumoto
- Department of Gastrointestinal Surgery and Clinical Research Institute Cancer Research Division, National Kyushu Medical Center, Fukuoka, Japan
| | - Jun Watanabe
- Gastroentelorogical Center, Yokohama City University Medical Center, Yokohama, Japan
| | - Yoshiyuki Sakamoto
- Department of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine, Aomori, Japan
| | - Kazuhiro Yoshida
- Department of Surgical Oncology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Atsuyuki Maeda
- Department of Surgery, Ogaki Municipal Hospital, Gifu, Japan
| | - Jin Teshima
- Department of Gastrointestinal Surgery,Iwate Prefectual Central Hospital, Iwate, Japan
| | - Mitsuru Yokota
- Department of General Surgery, Kurashiki Central Hospital, Okayama, Japan
| | - Chihiro Tanaka
- Department of Surgery, Gifu Prefectural General Medical Center, Gifu, Japan
| | | | - Hiroyuki Uetake
- Department of Specialized Surgeries, Tokyo Medical and Dental University, Tokyo, Japan
| | - Michio Itabashi
- Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, Tokyo, Japan
| | - Keiichi Takahashi
- Department of Surgery, Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital, Tokyo, Japan
| | - Hideo Baba
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Kenjiro Kotake
- Department of Surgery, Sano City Hospital, Tochigi, Japan
| | | | - Keisuke Aiba
- Department of Internal Medicine, Division of Clinical Oncology/Hematology, The Tokyo Jikei University School of Medicine, Tokyo, Japan
| | - Satoshi Morita
- Department of Biomedical Statistics and Bioinformatics, Kyoto University Graduate School of Medicine, Kyoto, Japan
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Tanaka C, Kusama Y, Ishikane M, Hayakawa K, Muraki Y, Ohmagari N. Pharmacists document antimicrobial use during off-duty hours in half of Japanese hospital. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Maekawa N, Yokoi H, Sotome K, Matsuura K, Tanaka C, Endo N, Nakagiri A, Ushijima S. Athelia termitophila sp. nov. is the teleomorph of the termite ball fungus Fibularhizoctonia sp. MYCOSCIENCE 2020. [DOI: 10.1016/j.myc.2020.08.002] [Citation(s) in RCA: 5] [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: 11/25/2022]
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Abe T, Kitayuguchi J, Okuyama K, Okada S, Nabika T, Tanaka C. Environmental factors and physical activity among youth in rural Japan: a 1-year prospective study. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.905] [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
Although moderate-to-vigorous physical activity (MVPA) has multiple health benefits, current global activity levels among children are quite low. Environmental influences on MVPA levels among children and adolescents in rural areas are unclear. The present study examined if environmental factors were associated with MVPA in children and adolescents in rural Japan.
Methods
Two school-based serial surveys were conducted in 2017 and 2018 for 1,461 children and adolescents (10-14 years old) in Unnan City, Japan. If meeting the WHO recommended MVPA levels: at least 60 minutes/day was assessed via the Japanese translation of the WHO Health Behaviour in School-aged Children survey questionnaire. Environmental factors, namely habitable land area, population size, and population density were calculated for each individuals' residential town, and categorized into three levels (small, medium, and large). Logistic regression was used to determine odds ratios (OR) and 95% confidence intervals (CI) of engaging in the recommended level of MVPA after 1 year by each environmental factor, adjusting for sex, school grades, body mass index, screen time, preference for PA, and MVPA level at baseline.
Results
Only 22.4% of children and adolescents were engaging in the recommended MVPA levels in 2018. Engaging in the recommended level of MVPA after 1 year was significantly associated with medium (OR = 1.63; 95%CI, 1.08-2.46) and large (OR = 1.69; 95%CI, 1.15-2.47) compared to small habitable areas, and with medium (OR = 1.01; 95%CI, 0.61-1.67) and large (OR = 1.75; 95%CI, 1.09-2.81) compared to small population size. Population density was not associated with MVPA.
Conclusions
This prospective study found that habitable area and population size were positively associated with MVPA at 1-year follow-up in rural Japan. In rural areas, habitable land areas and population size itself may be a better predictor for MVPA among children than population density.
Key messages
Habitable area and population size was positively associated with physical activity among children and adolescents in rural Japan. Population density as an environmental factor was not associated with physical activity.
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Affiliation(s)
- T Abe
- Center for Community-Based Healthcare Research and Education, Shimane University, Shimane, Japan
- Physical Education and Medicine Research Center UNNAN, Shimane, Japan
| | - J Kitayuguchi
- Physical Education and Medicine Research Center UNNAN, Shimane, Japan
| | - K Okuyama
- Center for Primary Health Care Research, Lund University, Malmö, Sweden
| | - S Okada
- Physical Education and Medicine Research Foundation, Nagano, Japan
| | - T Nabika
- Faculty of Medicine, Shimane University, Shimane, Japan
- Center for Community-Based Healthcare Research and Education, Shimane University, Shimane, Japan
| | - C Tanaka
- College of Health and Welfare, J. F. Oberlin University, Tokyo, Japan
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Ando Y, Hayashi T, Shiouchi H, Tanaka C, Ito K, Nishibe S, Miyata N, Horiba R, Yanagi H, Fujii T, Kawada K, Ikeda Y, Yamada S. Effect of Obesity on Hematotoxicity Induced by Carboplatin and Paclitaxel Combination Therapy in Patients with Gynecological Cancer. Biol Pharm Bull 2020; 43:669-674. [PMID: 32037352 DOI: 10.1248/bpb.b19-00916] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Despite in vivo studies suggesting that obesity increases carboplatin (CBDCA) bone marrow toxicity, the American Society of Clinical Oncology recommends that full weight-based cytotoxic chemotherapy doses be used to treat obese patients with cancer. Accordingly, the present study retrospectively investigated the effect of body mass index (BMI) on bone marrow toxicity in patients with gynecological cancer who underwent paclitaxel and carboplatin (TC) therapy after eliminating the effect of the target area under the curve (AUC). Risk factors for CBDCA bone marrow toxicity were also identified. A total of 110 patients with primary gynecological cancer or gynecological cancer of unknown primary origin who underwent TC therapy with a target AUC of 5-6 were included herein. Patients with a BMI of ≥25 and <25 kg/m2 were assigned to the obesity and control groups, respectively, and evaluated according to changes in hematological test values (platelet, white blood cell, and hemoglobin counts) starting from initial TC therapy administration until 21 d after the second treatment course. The obesity group had a significantly higher thrombocytopenia rate than the control group. Risk factors for thrombocytopenia ≥ grade 2 included BMI ≥25 kg/m2. Among patients with primary gynecological cancer or gynecological cancer of unknown primary origin who had a BMI of ≥25 kg/m2, those receiving CBDCA may be at increased risk for thrombocytopenia ≥ grade 2 when the dosage is calculated using the Calvert formula with the creatinine clearance level.
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Affiliation(s)
- Yosuke Ando
- Department of Clinical Pharmacy, Fujita Health University School of Medicine
| | - Takahiro Hayashi
- Department of Clinical Pharmacy, Fujita Health University School of Medicine.,College of Pharmacy, Kinjo Gakuin University
| | | | | | - Kaori Ito
- Department of Hematology, Fujita Health University School of Medicine
| | - Seira Nishibe
- Department of Clinical Pharmacy, Fujita Health University School of Medicine
| | - Nanaho Miyata
- Department of Clinical Pharmacy, Fujita Health University School of Medicine
| | - Ruri Horiba
- Department of Clinical Pharmacy, Fujita Health University School of Medicine
| | - Hisano Yanagi
- Department of Medical Oncology, Fujita Health University School of Medicine
| | - Takuma Fujii
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine
| | - Kenji Kawada
- Department of Medical Oncology, Fujita Health University School of Medicine
| | | | - Shigeki Yamada
- Department of Clinical Pharmacy, Fujita Health University School of Medicine
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Miwa N, Tanaka C, Ishida S, Hirata G, Song J, Torigoe T, Kuninobu Y, Nishikata T. Copper-Catalyzed Tertiary Alkylative Cyanation for the Synthesis of Cyanated Peptide Building Blocks. J Am Chem Soc 2020; 142:1692-1697. [PMID: 31939289 DOI: 10.1021/jacs.9b11349] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In this paper, we report efficient cyanation of various peptides containing the α-bromocarbonyl moiety using a Cu-catalyzed radical-based methodology employing zinc cyanide as the cyanide source. Mechanistic studies revealed that in situ formed CuCN was a key intermediate during the catalytic cycle. Our method could be useful for the synthesis of modified peptides containing quaternary carbons.
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Affiliation(s)
- Naoki Miwa
- Graduate School of Science and Engineering , Yamaguchi University , 2-16-1 Tokiwadai , Ube , Yamaguchi 755-8611 , Japan
| | - Chihiro Tanaka
- Graduate School of Science and Engineering , Yamaguchi University , 2-16-1 Tokiwadai , Ube , Yamaguchi 755-8611 , Japan
| | - Syo Ishida
- Graduate School of Science and Engineering , Yamaguchi University , 2-16-1 Tokiwadai , Ube , Yamaguchi 755-8611 , Japan
| | - Goki Hirata
- Graduate School of Science and Engineering , Yamaguchi University , 2-16-1 Tokiwadai , Ube , Yamaguchi 755-8611 , Japan
| | - Jizhou Song
- Interdisciplinary Graduate School of Engineering Sciences , Kyushu University , 6-1 Kasugakoen , Kasuga , Fukuoka 816-8580 , Japan
| | - Takeru Torigoe
- Interdisciplinary Graduate School of Engineering Sciences , Kyushu University , 6-1 Kasugakoen , Kasuga , Fukuoka 816-8580 , Japan.,Institute for Materials Chemistry and Engineering , Kyushu University , 6-1 Kasugakoen , Kasuga , Fukuoka 816-8580 , Japan
| | - Yoichiro Kuninobu
- Interdisciplinary Graduate School of Engineering Sciences , Kyushu University , 6-1 Kasugakoen , Kasuga , Fukuoka 816-8580 , Japan.,Institute for Materials Chemistry and Engineering , Kyushu University , 6-1 Kasugakoen , Kasuga , Fukuoka 816-8580 , Japan
| | - Takashi Nishikata
- Graduate School of Science and Engineering , Yamaguchi University , 2-16-1 Tokiwadai , Ube , Yamaguchi 755-8611 , Japan
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Takenaka D, Ohno Y, Tanaka C, Matsushiro E, Higashida A, Hashimoto T, Maeda H, Sakamoto S, Satouchi M. EP1.01-50 Quantitative Assessment of Subsegmental Bronchi on Thin-Section CT for Pulmonary Lymphangitis Carcinomatosa. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.2023] [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: 11/29/2022]
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Nakamura N, Tanaka C, Takeuchi-Kaneko Y. Recombination and local population structure of the root endophytic fungus Glutinomyces brunneus based on microsatellite analyses. FUNGAL ECOL 2019. [DOI: 10.1016/j.funeco.2019.03.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Sato B, Kanda M, Ito S, Teramoto H, Mochizuki Y, Ishigure K, Murai T, Asada T, Ishiyama A, Matsushita H, Tanaka C, Kobayashi D, Fujiwara M, Kodera Y. Proposal of optimal cut-off of preoperative serum tumor marker levels to predict postoperative recurrences of gastric cancer. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz155.173] [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: 11/12/2022] Open
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Oda T, Tanaka C, Tsuda M. Amanita imazekii—a new species in Amanita section Caesareae. Mycologia 2019. [DOI: 10.1080/00275514.2001.12063257] [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: 10/26/2022]
Affiliation(s)
- Takashi Oda
- Laboratory of Environmental Mycoscience, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Chihiro Tanaka
- Laboratory of Environmental Mycoscience, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Mitsuya Tsuda
- Laboratory of Environmental Mycoscience, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
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Kitade Y, Sumita T, Izumitsu K, Tanaka C. Cla4 PAK-like kinase is required for pathogenesis, asexual/sexual development and polarized growth in Bipolaris maydis. Curr Genet 2019; 65:1229-1242. [DOI: 10.1007/s00294-019-00977-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 04/10/2019] [Accepted: 04/16/2019] [Indexed: 12/23/2022]
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Nagata N, Maeda H, Ishibashi K, Hirata K, Makiyama A, Iwamoto S, Takemoto H, Imasato M, Yoshida Y, Munemoto Y, Tanaka C, Morita Y, Hotta Y, Toyofuku A, Nagasaka T, Morita S, Sakamoto J, Mishima H. Multicenter open-label randomized phase II study of second-line panitumumab and irinotecan with or without fluoropyrimidines in patients with KRAS wild-type metastatic colorectal cancer (PACIFIC study). Med Oncol 2019; 36:46. [PMID: 31020480 DOI: 10.1007/s12032-019-1254-4] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Accepted: 02/11/2019] [Indexed: 12/29/2022]
Abstract
This phase II clinical trial compared the efficacy and safety of second-line irinotecan and panitumumab treatment (IRI + Pmab) with that of irinotecan, fluoropyrimidines and panitumumab treatment (control) in patients with KRAS wild-type mCRC. The primary endpoint was progression-free survival. In addition, early predictive markers of treatment efficacy were explored. Eighty patients were planned to be recruited. Due to a slow accrual rate, only 48 patients were recruited from 2012 to 2016, of which 23 were allocated to the control group and 25 were allocated to the IRI + Pmab group. The median progression-free survival was 254 days (95% confidence interval, 159-306) for control, and 190 days (95% confidence interval, 159-213) for IRI + Pmab (log-rank test, P = 0.26). The response rate without confirmation was 21.7% (5/23) for control and 40.0% (10/25) for IRI + Pmab. Neutropenia, leukopenia, and anorexia were the most common Grade 3/4 adverse events, and several early drop-outs from the treatment protocol were observed in the control group. As for the biomarkers, carcinoembryonic antigen and lactate dehydrogenase (LDH) smoothly declined immediately after the initial dosing in patients with a partial response or stable disease. After starting treatment, LDH-1 and - 2 increased, while LDH-4 and - 5 decreased, irrespective of tumor response. However, exceptions were frequent. In conclusion, this study failed to prove the safety and efficacy of irinotecan and panitumumab treatment due to insufficient patient accrual. Although LDH and its isozymes changed after initiation of treatment, their ability to predict the tumor response may not surpass that of carcinoembryonic antigen levels.The University Hospital Medical Information Network Clinical Trial Registry: UMIN000007658.
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Affiliation(s)
- Naoki Nagata
- Department of Gastroenterological Surgery, Kitakyushu General Hospital, Kitakyushu, Japan
| | - Hiromichi Maeda
- Cancer Treatment Center, Kochi Medical School Hospital, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan.
| | - Keiichiro Ishibashi
- Department of Digestive Tract and General Surgery Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Keiji Hirata
- Department of Surgery 1, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Akitaka Makiyama
- Department of Hematology and Oncology, JCHO Kyushu Hospital, Kitakyushu, Japan
| | | | | | - Mitsunobu Imasato
- Department of Gastroenterological Surgery, Osaka Police Hospital, Osaka, Japan
| | - Yoichiro Yoshida
- Department of Gastroenterological Surgery, Fukuoka University Faculty of Medicine, Fukuoka, Japan
| | | | - Chihiro Tanaka
- Department of Surgery, Gifu Prefectural General Medical Center, Gifu, Japan
| | - Yoshitaka Morita
- Department of Radiology, Kenporen Osaka Central Hospital, Osaka, Japan
| | - Yoshihiro Hotta
- Department of Surgery, Tokai Central Hospital, Kakamigahara, Japan
| | - Atsushi Toyofuku
- Department of Surgery, National Hospital Organization Kokura Medical Center, Kitakyushu, Japan
| | - Takeshi Nagasaka
- Department of Clinical Oncology, Kawasaki Medical School, Kurashiki, Japan
| | - Satoshi Morita
- Department of Biomedical Statistics and Bioinformatics, Kyoto University Graduate School of Medicine, Kyoto, Japan
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Nakamura N, Tanaka C, Takeuchi-Kaneko Y. Transmission of antibiotic-resistance markers by hyphal fusion suggests partial presence of parasexuality in the root endophytic fungus Glutinomyces brunneus. Mycol Prog 2019. [DOI: 10.1007/s11557-018-1455-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Tanioka H, Honda M, Tanaka C, Morita Y, Ishibashi K, Kato T, Matsuda C, Kataoka M, Satake H, Munemoto Y, Kobayashi K, Takahashi M, Nakata K, Sakamoto J, Oba K, Mishima H. Biweekly S-1 plus oxaliplatin (SOX) reintroduction in previously treated metastatic colorectal cancer patients (ORION 2 study): a phase II study to evaluate the efficacy and safety. Int J Clin Oncol 2019; 24:836-841. [DOI: 10.1007/s10147-019-01414-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 02/06/2019] [Indexed: 11/29/2022]
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Matsuoka H, Morise Z, Tanaka C, Hayashi T, Ikeda Y, Maeda K, Masumori K, Koide Y, Katsuno H, Tanahashi Y, Nakajima S, Hanai T, Kato Y, Sugioka A, Uyama I. Repeat hepatectomy with systemic chemotherapy might improve survival of recurrent liver metastasis from colorectal cancer-a retrospective observational study. World J Surg Oncol 2019; 17:33. [PMID: 30770753 PMCID: PMC6377761 DOI: 10.1186/s12957-019-1575-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [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] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 02/08/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Although hepatectomy for metastatic colorectal cancer (mCRC) prolongs survival in up to 40% of people, recurrence rates approach 70%. We used a multidisciplinary approach to treat recurrent liver metastases, including chemotherapy, surgery, and palliative care. On the other hand, development of chemotherapeutic agents is remarkable and improves long-term survival. However, whether chemotherapy and repeat hepatectomy combination therapy improve survival or not is still unclear. The aim of this study was to analyze the outcomes of repeat hepatectomy with systemic chemotherapy for mCRC. METHODS Following Institutional Review Board approval, we reviewed the records of all patients who underwent hepatectomy for mCRC between 1974 and 2015 at Fujita Health University Hospital. We used the Kaplan-Meier method to estimate overall survival from the first and last hepatectomy in multi hepatectomy cases after 2005 and compared outcomes between groups using the log-rank test. RESULTS A total of 426 liver resections were performed for mCRC; of these, 236 cases were performed after 2005 (late group). In 118 (50%) cases, the site of recurrence was the liver, 59 (50%) underwent repeat hepatectomy, and 14 cases had ≥ 2 repeat hepatectomies. Overall survival (OS) before and after 2005 was 42.2 and 64.1 months, respectively, with the late group having better OS compared to the early (1974-2004) group. OS for single hepatectomy cases was 83.2 months, for two hepatectomies was 42.9 months, and for three hepatectomies was 35.3 months. In total, 59 patients did not undergo surgery after recurrence with an OS of 28.7 months. Mortality of the second and third repeat hepatectomy was 1.7% and 15.3%, respectively. CONCLUSION Repeat hepatectomy with systemic chemotherapy for mCRC is feasible and might achieve improved survival in carefully selected patients.
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Affiliation(s)
- Hiroshi Matsuoka
- Department of Surgery Fujita Health University, 1-98 Dengakugakubo Kutsukake-cho, Toyoake City, Aichi 470-1192 Japan
| | - Zenichi Morise
- Department of Surgery Fujita Health University, 1-98 Dengakugakubo Kutsukake-cho, Toyoake City, Aichi 470-1192 Japan
| | - Chihiro Tanaka
- College of Pharmacy, Kinjo Gakuin University, 2-1723 Oomori Moriyama, Nagoya City, Aichi 463-8521 Japan
| | - Takahiro Hayashi
- College of Pharmacy, Kinjo Gakuin University, 2-1723 Oomori Moriyama, Nagoya City, Aichi 463-8521 Japan
| | - Yoshiaki Ikeda
- College of Pharmacy, Kinjo Gakuin University, 2-1723 Oomori Moriyama, Nagoya City, Aichi 463-8521 Japan
| | - Koutarou Maeda
- Fujita Health University Hospital International Medical Center, 1-98 Dengakugakubo Kutsukake-cho, Toyoake city, Aichi 470-1192 Japan
| | - Koji Masumori
- Department of Surgery Fujita Health University, 1-98 Dengakugakubo Kutsukake-cho, Toyoake City, Aichi 470-1192 Japan
| | - Yoshikazu Koide
- Department of Surgery Fujita Health University, 1-98 Dengakugakubo Kutsukake-cho, Toyoake City, Aichi 470-1192 Japan
| | - Hidetoshi Katsuno
- Department of Surgery Fujita Health University, 1-98 Dengakugakubo Kutsukake-cho, Toyoake City, Aichi 470-1192 Japan
| | - Yoshinao Tanahashi
- Department of Surgery Fujita Health University, 1-98 Dengakugakubo Kutsukake-cho, Toyoake City, Aichi 470-1192 Japan
| | - Sanae Nakajima
- Department of Surgery Fujita Health University, 1-98 Dengakugakubo Kutsukake-cho, Toyoake City, Aichi 470-1192 Japan
| | - Tsunekazu Hanai
- Department of Surgery Fujita Health University, 1-98 Dengakugakubo Kutsukake-cho, Toyoake City, Aichi 470-1192 Japan
| | - Yutaro Kato
- Department of Surgery Fujita Health University, 1-98 Dengakugakubo Kutsukake-cho, Toyoake City, Aichi 470-1192 Japan
| | - Atsushi Sugioka
- Department of Surgery Fujita Health University, 1-98 Dengakugakubo Kutsukake-cho, Toyoake City, Aichi 470-1192 Japan
| | - Ichiro Uyama
- Department of Surgery Fujita Health University, 1-98 Dengakugakubo Kutsukake-cho, Toyoake City, Aichi 470-1192 Japan
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Takahashi T, Sunami E, Kusumoto T, Ota M, Sakamoto Y, Tomita N, Maeda A, Tejima J, Okabe M, Tanaka C, Yamauchi J, Itabashi M, Kotake K, Takahashi K, Baba H, Boku N, Aiba K, Ishiguro M, Morita S, Sugihara K. A randomized phase III trial of S-1/oxaliplatin (SOX) versus UFT/leucovorin as adjuvant chemotherapy for high-risk stage III colon cancer: The ACTS-CC 02 trial. J Clin Oncol 2019. [DOI: 10.1200/jco.2019.37.4_suppl.484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
484 Background: The ACTS-CC 02 trial was designed to verify the superiority of postoperative adjuvant chemotherapy with S-1/oxaliplatin (SOX) over UFT/leucovorin (LV), one of the standard oral fluoropyrimidine regimens in Japan, in terms of disease-free survival (DFS) in patients (pts) with high-risk stage III colon cancer (any T, N2, or positive nodes around the origin of the feeding arteries). The results of the safety analysis have been reported previously (Clin Colorectal Cancer, 2018). We now present the 3-year DFS results as the primary endpoint. Methods: Pts who underwent curative resection for pathologically confirmed high-risk stage III colon cancer were randomly assigned to receive either UFT/LV (300–600 mg/day of UFT according to body surface area [BSA] and 75 mg/day of LV on days 1-28, every 35 days, 5 courses) or SOX (100 mg/m2 of oxaliplatin on day 1 and 80–120 mg/day of S-1 according to BSA on days 1-14, every 21 days, 8 courses). The primary endpoint was DFS. Results: From April 2010 through October 2014, a total of 966 pts were enrolled at 260 institutions. The full analysis set, excluding pts who withdrew informed consent before protocol treatment, comprised 478 and 477 pts in the UFT/LV group and SOX group, respectively. The median age was 65.0 years. The ECOG PS was 0 in 94.0%, and the disease stage was IIIA/IIIB/IIIC in 1.3%/50.2%/48.6%. The 3-year DFS rate was 60.6% in the UFT/LV group and 62.7% in the SOX group (HR: 0.90; 95% CI: 0.74-1.09; p = 0.28); the superiority of SOX was not demonstrated. In stage IIIB, the 3-year DFS rate was 69.3% and 68.5% in the UFT/LV group and SOX group, respectively (HR: 1.01; 95% CI: 0.74-1.37; p = 0.95). In Stage IIIC, the 3-year DFS rate was 50.6% and 55.8% in the UFT/LV group and SOX group, respectively (HR: 0.82, 95% CI: 0.63-1.06; p = 0.12). Notably, in the N2b subgroup, the 3-year DFS rate was 46.0% and 54.7% in the UFT/LV group and SOX group, respectively (HR: 0.76, 95% CI: 0.55-1.05; p = 0.10). Conclusions: SOX was not shown to be superior to UFT/LV in pts with high-risk stage III colon cancer. However, the oxaliplatin-based regimen was suggested to be more effective in advanced disease, such as stage IIIC and N2b. Clinical trial information: JapicCTI-101073.
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Affiliation(s)
- Takao Takahashi
- Department of Surgical Oncology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Eiji Sunami
- Department of Surgical Oncology, Japanese Red Cross Medical Center, Tokyo, Japan
| | - Tetsuya Kusumoto
- Department of Gastrointestinal Surgery and Clinical Research Center Cancer Research Division, National Kyushu Medical Center, Fukuoka, Japan
| | - Mitsuyoshi Ota
- Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan
| | - Yoshiyuki Sakamoto
- Department of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine, Aomori, Japan
| | - Naohiro Tomita
- Division of Lower GI Surgery, Department of Surgery, Hyogo College of Medicine, Hyogo, Japan
| | - Atsuyuki Maeda
- Department of Surgery, Ogaki Municipal Hospital, Gifu, Japan
| | - Jin Tejima
- Department of Gastrointestinal Surgery,Iwate Prefectual Central Hospital, Iwate, Japan
| | - Michio Okabe
- Department of General Surgery, Kurashiki Central Hospital, Okayama, Japan
| | - Chihiro Tanaka
- Department of Surgery, Gifu Prefectural General Medical Center, Gifu, Japan
| | | | - Michio Itabashi
- Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, Tokyo, Japan
| | - Kenjiro Kotake
- Department of Surgery, Tochigi Cancer Center, Tochigi, Japan
| | - Keiichi Takahashi
- Department of Surgery, Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital, Tokyo, Japan
| | - Hideo Baba
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Narikazu Boku
- Division of Gastrointestinal Medical Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Keisuke Aiba
- Department of Internal Medicine, Division of Clinical Oncology/Hematology, The Tokyo Jikei University School of Medicine, Tokyo, Japan
| | - Megumi Ishiguro
- Department of Translational Oncology, Tokyo Medical and Dental University, Tokyo, Japan
| | - Satoshi Morita
- Department of Biomedical Statistics and Bioinformatics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Sunakawa Y, Usher J, Satake H, Jaimes Y, Miyamoto Y, Nakamura M, Kataoka M, Shiozawa M, Takagane A, Terazawa T, Watanabe T, Ishigure K, Tanaka C, Sekikawa T, Takeuchi M, Fujii M, Danenberg K, Danenberg P, Lenz HJ, Ichikawa W. Gene mutation status in circulating tumor DNA (ctDNA) and first-line FOLFOXIRI plus bevacizumab (bev) in metastatic colorectal cancer (mCRC) harboring RAS mutation. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy281.089] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Honda M, Matsuda C, Tanaka C, Kondo K, Takahashi T, Kosugi C, Tokunaga Y, Takemoto H, Kim H, Sakamoto J, Oba K, Mishima H. A phase II study of bevacizumab and irinotecan plus alternate-day S-1 as a second-line therapy for colorectal cancer: The AIRS study. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy281.027] [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: 11/12/2022] Open
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42
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Kanda M, Shimizu D, Tanaka H, Tanaka C, Kobayashi D, Hayashi M, Takami H, Niwa Y, Yamada S, Fujii T, Sugimoto H, Kodera Y. Synaptotagmin XIII expression and peritoneal metastasis in gastric cancer. Br J Surg 2018; 105:1349-1358. [PMID: 29741294 DOI: 10.1002/bjs.10876] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 02/11/2018] [Accepted: 03/16/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND Peritoneal metastasis is a frequent cause of death in patients with gastric cancer. The aim of this study was to identify molecules responsible for mediating peritoneal metastasis of gastric cancer. METHODS Transcriptome and bioinformatics analyses were conducted to identify molecules associated with peritoneal metastasis. The therapeutic effects of intraperitoneally administered small interfering (si) RNA were evaluated using mouse xenograft models. Expression of mRNA and protein was determined in gastric tissues from patients with gastric cancer. RESULTS Synaptotagmin XIII (SYT13) was expressed at significantly higher levels in patients with peritoneal recurrence, but not in those with hepatic or distant lymph node recurrence. Inhibition of SYT13 expression in a gastric cancer cell line transfected with SYT13-specific siRNA (siSYT13) was associated with decreased invasion and migration ability of the cells, but not with proliferation and apoptosis. Intraperitoneal administration of siSYT13 significantly inhibited the growth of peritoneal nodules and prolonged survival in mice. In an analysis of 200 patients with gastric cancer, SYT13 expression in primary gastric cancer tissues was significantly greater in patients with peritoneal recurrence or metastasis. A high level of SYT13 expression in primary gastric cancer tissues was an independent risk factor for peritoneal recurrence. CONCLUSION SYT13 expression in gastric cancer is associated with perioneal metatases and is a potential target for treatment.
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Affiliation(s)
- M Kanda
- Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - D Shimizu
- Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - H Tanaka
- Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - C Tanaka
- Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - D Kobayashi
- Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Hayashi
- Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - H Takami
- Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Niwa
- Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - S Yamada
- Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Fujii
- Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - H Sugimoto
- Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Kodera
- Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, Nagoya, Japan
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Matsuda C, Honda M, Tanaka C, Kondo K, Takahashi T, Kosugi C, Tokunaga Y, Takemoto H, Kim HM, Sakamoto J, Oba K, Mishima H. A phase II study of bevacizumab and irinotecan plus alternate-day S-1 as a second-line therapy in patients with metastatic colorectal cancer: the AIRS study. Cancer Chemother Pharmacol 2018; 81:1035-1041. [PMID: 29644459 DOI: 10.1007/s00280-018-3568-x] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 03/22/2018] [Indexed: 12/17/2022]
Abstract
BACKGROUND The aim of this single-arm phase II clinical trial was to evaluate whether the alternate-day administration of S-1 plus irinotecan would reduce the incidence of severe diarrhea in comparison to consecutive-day S-1 administration (standard IRIS regimen) in second-line treatment for patients with metastatic colorectal cancer. METHODS Patients with metastatic colorectal cancer after failure with first-line treatment of oxaliplatin and fluoropyrimidine were enrolled. Irinotecan (150 mg/m2) and bevacizumab (5 mg/kg) were given intravenously on day 1. Oral S-1 was administered on alternate days at a dose of 40-60 mg twice a day. Cycles were repeated every 2 weeks. The primary endpoint was the incidence of grade ≥ 3 diarrhea. Our hypothesis set 21% as a threshold incidence and 10% as an expected incidence from previous studies with one-sided alpha 0.05. The secondary endpoints included the relative dose intensity, progression-free survival, overall survival and other adverse events. RESULTS A total of 51 patients were enrolled. The incidence of grade ≥ 3 diarrhea was 15.7% (8/51). Other common grade ≥ 3 adverse events were neutropenia, anemia, thrombocytopenia and fatigue were 13.7% (7/51), 5.9% (3/51), 2.0% (1/51) and 5.9% (3/51), respectively. The relative dose intensities of irinotecan, bevacizumab, and S-1 were 80.0, 86.8, and 77.7%, respectively. The median progression-free survival and overall survival were 8.4 months (5.8-9.8) and 17.1 months (11.8-22.3). CONCLUSIONS The alternate-day S-1 administration does not have significant effectiveness to reduce diarrhea in patients who received second-line treatment for metastatic colorectal cancer.
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Affiliation(s)
- Chu Matsuda
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Michitaka Honda
- Department of Disaster and Comprehensive Medicine, Fukushima Medical University, 1 Hikarigaoka, Fukushima, Fukushima, 960-1295, Japan.
| | | | - Ken Kondo
- Nagoya Medical Center, Nagoya, Japan
| | - Takao Takahashi
- Department of Surgical Oncology, Graduate School of Medicine, Gifu University, Gifu, Japan
| | | | | | | | - Ho Min Kim
- Department of Surgery, Rinku General Medical Center, Izumisano, Japan
| | | | - Koji Oba
- Department of Biostatistics, School of Public Health, University of Tokyo, Tokyo, Japan
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Kimura Y, Tanaka C, Oka M. Identification of Major Enzymes Involved in the Synthesis of Diadenosine Tetraphosphate and/or Adenosine Tetraphosphate in Myxococcus xanthus. Curr Microbiol 2018; 75:811-817. [PMID: 29468302 DOI: 10.1007/s00284-018-1452-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 02/08/2018] [Indexed: 01/13/2023]
Abstract
Myxococcus xanthus generates diadenosine tetraphosphates (Ap4A) and diadenosine pentaphosphates (Ap5A) under various stress conditions. M. xanthus lysyl-tRNA synthetase (LysS) efficiently synthesizes Ap4A from ATP, Ap5A from ATP and adenosine tetraphosphate (Ap4), and Ap4 from ATP and triphosphate. To identify other M. xanthus enzymes that can catalyze Ap4A and Ap4 synthesis, 15 M. xanthus aminoacyl-tRNA synthetases (aaRSs), four acyl-CoA synthetases (Acys), three acetyl-CoA synthetases (Aces), phosphoglycerate kinase (Pgk), and adenylate kinase (Adk) were expressed in Escherichia coli and examined for Ap4A or Ap4 synthetase activity using ATP or ATP and triphosphate as substrates. Among the tested enzymes, LysS had the highest Ap4A synthetase activity. AlaRS, SerRS, and LeuRS1 showed high ADP synthetase activity with ATP as a substrate in the presence of pyrophosphatase, and also demonstrated the ability to produce Ap4 from ATP and triphosphate in the absence of pyrophosphatase. Ap4 formation by AlaRS, SerRS, and LeuRS1 was approximately 4- to 13-fold higher compared with that of Ap4A, suggesting that these enzymes prefer triphosphate over ATP as a substrate in the second reaction. Some of the recombinant M. xanthus Acys and Aces also synthesized Ap4 from ATP and triphosphate. However, Pgk was capable of catalyzing the production of Ap4 from ATP and 3-phosphoglycerate in the presence of Mg2+ and did not require triphosphate, suggesting that this enzyme is mainly responsible for Ap4 synthesis in M. xanthus.
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Affiliation(s)
- Yoshio Kimura
- Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki-cho, Kagawa, Japan.
| | - Chihiro Tanaka
- Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki-cho, Kagawa, Japan
| | - Manami Oka
- Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki-cho, Kagawa, Japan
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Iwata Y, Tanaka C, Komori S, Nagao N, Kawai M, Yoshida K, Kunieda K. Lobulated esophageal schwannoma resected with concurrent approach from the thorax and cervix. World J Surg Oncol 2018; 16:29. [PMID: 29439724 PMCID: PMC5812219 DOI: 10.1186/s12957-018-1334-5] [Citation(s) in RCA: 2] [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] [Received: 07/30/2017] [Accepted: 02/05/2018] [Indexed: 12/16/2022] Open
Abstract
Background Esophageal schwannomas are rare esophageal submucosal tumors. We herein report a case of a lobulated esophageal schwannoma resected with concurrent approach from the thorax and cervix. Case presentation A 74-year-old woman visited our hospital with complaint of loss of consciousness, and a lobulated mediastinal tumor was discovered by chance in computed tomography. Upper gastrointestinal endoscopy showed a smooth elevated lesion at a position of 23–28 cm from the incisor teeth. A hypermetabolic appearance was noted on positron emission tomography. Based on these data, a gastrointestinal stromal tumor was suspected. The tumor was enucleated at the thoracic cavity while being pushed from the cervical incision. Pathological examination showed an esophageal schwannoma. Conclusions We experienced a case of lobulated esophageal schwannoma with fluorodeoxyglucose accumulation. We resected the tumor with concurrent approach from the thorax and cervix.
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Affiliation(s)
- Yoshinori Iwata
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1 Noisshiki, Gifu, Japan.
| | - Chihiro Tanaka
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1 Noisshiki, Gifu, Japan
| | - Shuji Komori
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1 Noisshiki, Gifu, Japan
| | - Narutoshi Nagao
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1 Noisshiki, Gifu, Japan
| | - Masahiko Kawai
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1 Noisshiki, Gifu, Japan
| | - Kazuhiro Yoshida
- Department of Surgical Oncology, Gifu University School of Medicine, 1-1 Yanagido, Gifu, Japan
| | - Katsuyuki Kunieda
- Department of Surgery, Gifu Prefectural General Medical Center, 4-6-1 Noisshiki, Gifu, Japan
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Tanaka C, Itoh T, Iwasaki Y, Mizuno N, Nasuda S, Murai K. Direct interaction between VRN1 protein and the promoter region of the wheat FT gene. Genes Genet Syst 2018; 93:25-29. [DOI: 10.1266/ggs.17-00041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- Chihiro Tanaka
- Department of Bioscience and Biotechnology, Fukui Prefectural University
| | - Takafumi Itoh
- Department of Bioscience and Biotechnology, Fukui Prefectural University
| | - Yukimoto Iwasaki
- Department of Bioscience and Biotechnology, Fukui Prefectural University
| | | | | | - Koji Murai
- Department of Bioscience and Biotechnology, Fukui Prefectural University
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Sunakawa Y, Satake H, Usher JL, Jaimes YS, Miyamoto Y, Nakamura M, Nakayama H, Sugano N, Takagane A, Gotoh M, Watanabe T, Ishigure K, Tanaka C, Takeuchi M, Fujii M, DANENBERG KATHLEEN, Lenz HJ, Sekikawa T, Ichikawa W. Initial therapy with FOLFOXIRI plus bevacizumab (bev) for RAS mutant metastatic colorectal cancer (mCRC) and gene mutations in circulating tumor DNA (ctDNA) as a predictive marker for the efficacy: JACCRO CC-11. J Clin Oncol 2018. [DOI: 10.1200/jco.2018.36.4_suppl.635] [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: 11/20/2022] Open
Abstract
635 Background: We have reported that modified (m)-FOLFOXIRI plus bev was feasible and had a good objective response rate (ORR) for Japanese patients (pts) in a phase II trial of the JACCRO CC-11 (ESMO 2017 #543P). In addition, a pre-planned research was performed to investigate if the change of gene mutations in ctDNA during therapy can serve as a predictor for clinical outcomes in RAS mutant mCRC. Methods: The efficacy of m-FOLFOXIRI (irinotecan 150 mg/m², oxaliplatin 85 mg/m², levofolinate 200 mg/m², and fluorouracil 2400 mg/m² repeated biweekly) plus bev was evaluated prospectively in 62 pts (median age 63, 55% male, 92% PS0, and 27% right-sided tumors) with mCRC harboring RAS mutation (mt). The primary endpoint was ORR. Progression-free survival (PFS), overall survival, early tumor shrinkage (ETS), depth of response (DpR), and safety were secondary endpoints. Plasma samples for extraction of ctDNA were collected at 3 points (pre-, 8w, and progression) and analyzed for specific KRAS, NRAS, BRAF, and PIK3CA variants with real-time PCR assays. Results: Updated median follow-up time was 10.2 months. ORR and disease control rate were 75.8% and 96.8%, respectively. ETS was 73.8%, and median DpR was 49.6%. Median PFS was 11.5 months (95%CI 9.5-14.0). KRAS/ NRAS mt from pre-treatment plasma was confirmed in 79% of pts. In 41 pts with RAS mt at pre-treatment, mt status at 8 weeks predicted clinical outcomes (Table). Moreover, combined assessment of mt in ctDNA and ETS served as a refined predictor for efficacy. Pts with PIK3CA mt at pre-treatment had a poor outcome (ORR, 43%; median PFS, 8.8 months). Conclusions: FOLFOXIRI plus bev regimen is active for RAS mutant mCRC. RAS mt in ctDNA and ETS evaluation might potentially be a useful on-treatment biomarker in mCRC pts with RAS mt. Clinical trial information: UMIN000015152. [Table: see text]
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Affiliation(s)
- Yu Sunakawa
- St. Marianna University School of Medicine, Kawasaki, Japan
| | | | | | | | | | | | - Hiroshi Nakayama
- National Hospital Organization Nagoya Medical Center, Nagoya, Japan
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Nakamura N, Tanaka E, Tanaka C, Takeuchi-Kaneko Y. Localization of helotialean fungi on ectomycorrhizae of Castanopsis cuspidata visualized by in situ hybridization. Mycorrhiza 2018; 28:17-28. [PMID: 29046936 DOI: 10.1007/s00572-017-0803-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 02/12/2017] [Accepted: 10/11/2017] [Indexed: 05/16/2023]
Abstract
Non-ectomycorrhizal fungi that associate with typical ectomycorrhizae often remain hidden, and their localization inside ectomycorrhizal (ECM) roots has remained uncharacterized. In this study, the fungal community associated with the ectomycorrhizae of Castanopsis cuspidata was investigated using a culture-dependent isolation technique. Additionally, the species composition and localization were determined using molecular techniques. The results of the isolation and identification of fungal species revealed the predominance of a few species belonging to the order Helotiales. Furthermore, the fungal community structures were significantly different depending on the taxa of the ectomycorrhiza-forming fungi. A taxon-specific probe was developed to analyze the localization of one dominant Hyaloscyphaceae (Helotiales) species in ECM tissues by in situ hybridization. Hybridization signals were detected on the surface of the fungal mantle and around the ECM fungal cells within the mantle. Hyphal penetration into ECM hyphal cells of fungal mantles was also observed. Signals were not detected in the Hartig net or plant tissues inside the mantle in healthy ectomycorrhizae. These findings suggest that the analyzed species interact not only with host plant as root endophyte but also directly with the ECM fungi.
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Affiliation(s)
- Noritaka Nakamura
- Laboratory of Terrestrial Microbial Ecology, Division of Environmental Science and Technology, Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto, 606-8502, Japan.
| | - Eiji Tanaka
- Department of Environmental Science and Engineering, Ishikawa Prefectural University, Nonoichi, Ishikawa, 921-8836, Japan
| | - Chihiro Tanaka
- Laboratory of Terrestrial Microbial Ecology, Division of Environmental Science and Technology, Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Yuko Takeuchi-Kaneko
- Laboratory of Terrestrial Microbial Ecology, Division of Environmental Science and Technology, Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto, 606-8502, Japan
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Pertuit D, Mitaine-Offer AC, Miyamoto T, Tanaka C, Delaude C, Lacaille-Dubois MA. New terpenoid glycosides from Eriocoelum microspermum. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608240] [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: 10/18/2022]
Affiliation(s)
- D Pertuit
- PEPITE EA 4267, Laboratoire de Pharmacognosie, UFR des Sciences de Santé, Université de Bourgogne Franche-Comté, Dijon, France
| | - AC Mitaine-Offer
- PEPITE EA 4267, Laboratoire de Pharmacognosie, UFR des Sciences de Santé, Université de Bourgogne Franche-Comté, Dijon, France
| | - T Miyamoto
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - C Tanaka
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - C Delaude
- Centre de Recherche Phytochimique, Université de Liège, Institut de Chimie-B6, Sart Tilman, Liège, Belgium
| | - MA Lacaille-Dubois
- PEPITE EA 4267, Laboratoire de Pharmacognosie, UFR des Sciences de Santé, Université de Bourgogne Franche-Comté, Dijon, France
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Sumita T, Izumitsu K, Tanaka C. Characterization of the autophagy-related gene BmATG8 in Bipolaris maydis. Fungal Biol 2017; 121:785-797. [PMID: 28800850 DOI: 10.1016/j.funbio.2017.05.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 05/26/2017] [Accepted: 05/29/2017] [Indexed: 10/19/2022]
Abstract
Autophagy is involved in cellular development and the maintenance of viability under nutrient deprivation in a wide range of eukaryotes. A filamentous ascomycete Bipolaris maydis, responsible for southern corn leaf blight, is also studied as a model fungus for sexual reproduction in filamentous ascomycetes that form filiform ascospores. In order to clarify the roles of autophagy in various stages of the life cycle of B. maydis, we constructed null mutants of BmATG8, an orthologue of the Saccharomyces cerevisiae autophagy gene ATG8 in B. maydis. Deletion of BmATG8 impaired localization of cytosolic components to the vacuole under nitrogen starvation, suggesting that autophagy was deficient in the null mutants. Additionally, fluorescent microscopic observations on a eGFP-fused BmATG8 expressing strain showed that BmATG8 is associated with autophagy-related structures. In vegetative growth, ΔBmATG8 strains showed a reduction in conidiation and aerial mycelial growth. Interestingly, the mutant conidia indicated loss of the germination rate under starvation conditions and affected longevity. However, germinated mutant conidia were still capable of infecting the host plant via appressoria. In sexual reproduction, ascospores with ΔBmATG8 genetic background were aborted. Our results revealed that autophagy plays a crucial role in the function of conidia, not in host infection via appressoria in B. maydis. In addition, conservation of the importance of autophagy in ascospore development is suggested among ascomycetes including species that form bitunicate ascus.
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Affiliation(s)
- Takuya Sumita
- Laboratory of Environmental Mycoscience, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Kosuke Izumitsu
- Laboratory of Environmental Mycoscience, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Chihiro Tanaka
- Laboratory of Environmental Mycoscience, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan.
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