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Hasegawa M, Arai E, Nakamura M. Nestling, but not adult male, barn swallows emit short calls in noisy environments. Biol J Linn Soc Lond 2021. [DOI: 10.1093/biolinnean/blab007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Some, but not all, animals cope with anthropogenic noise by changing the structure of their acoustic signals, possibly due to two interrelated factors: the design of the acoustic signals and the intrinsic biological state. Here, using the barn swallow (Hirundo rustica) that breed solitarily along streets, we studied male enticement calls and nestling food-begging calls in relation to ambient noise. The former calls are structurally quite similar to the latter, perhaps functioning as a sensory trap to exploit female parental care for nestlings. This provides a unique opportunity to study whether intrinsic biological state (i.e. developmental stage, here), virtually independent of acoustic design, matters in acoustic adaptation to anthropogenic noise. We found that the syllable length of nestling food-begging calls, but not of male enticement calls, decreased with increasing local noise levels within populations. The syllable lengths of the father’s enticement calls and those of the nestling’s food-begging calls were positively related, which explains why male enticement calls as well as nestling food-begging calls had shorter syllables in a noisy urban population compared to those in a quiet rural population. The current findings indicate that the intrinsic biological state of two acoustically similar sounds explains their differential relationships with ambient noise.
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Rabben HL, Kodama Y, Nakamura M, Bones AM, Wang TC, Chen D, Zhao CM, Øverby A. Chemopreventive Effects of Dietary Isothiocyanates in Animal Models of Gastric Cancer and Synergistic Anticancer Effects With Cisplatin in Human Gastric Cancer Cells. Front Pharmacol 2021; 12:613458. [PMID: 33897415 PMCID: PMC8060630 DOI: 10.3389/fphar.2021.613458] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 02/09/2021] [Indexed: 12/15/2022] Open
Abstract
Naturally occurring isothiocyanates (ITCs) from edible vegetables have shown potential as chemopreventive agents against several types of cancer. The aims of the present study were to study the potential of ITCs in chemoprevention and in potentiating the efficacy of cytotoxic drugs in gastric cancer treatment. The chemoprevention was studied in chemically induced mouse model of gastric cancer, namely N-methyl-N-nitrosourea (MNU) in drinking water, and in a genetically engineered mouse model of gastric cancer (the so-called INS-GAS mice). The pharmacological effects of ITCs with or without cisplatin were studied in human gastric cell lines MKN45, AGS, MKN74 and KATO-III, which were derived from either intestinal or diffused types of gastric carcinoma. The results showed that dietary phenethyl isothiocyanate (PEITC) reduced the tumor size when PEITC was given simultaneously with MNU, but neither when administrated after MNU nor in INS-GAS mice. Treatments of gastric cancer cells with ITCs resulted in a time- and concentration-dependent inhibition on cell proliferation. Pretreatment of gastric cancer cells with ITCs enhanced the inhibitory effects of cisplatin (but not 5-fluorouracil) in time- and concentration-dependent manners. Treatments of gastric cancer cells with PEITC plus cisplatin simultaneously at different concentrations of either PEITC or cisplatin exhibited neither additive nor synergetic inhibitory effect. Furthermore, PEITC depleted glutathione and induced G2/M cell cycle arrest in gastric cancer cells. In conclusion, the results of the present study showed that PEITC displayed anti-cancer effects, particularly when given before the tumor initiation, suggesting a chemopreventive effect in gastric cancer, and that pretreatment of PEITC potentiated the anti-cancer effects of cisplatin, possibly by reducing the intracellular pool of glutathione, suggesting a possible combination strategy of chemotherapy with pretreatment with PEITC.
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Rimbara E, Suzuki M, Matsui H, Nakamura M, Morimoto M, Sasakawa C, Masuda H, Nomura S, Osaki T, Nagata N, Shibayama K, Tokunaga K. Isolation and characterization of Helicobacter suis from human stomach. Proc Natl Acad Sci U S A 2021; 118:e2026337118. [PMID: 33753513 PMCID: PMC8020762 DOI: 10.1073/pnas.2026337118] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Helicobacter suis, a bacterial species naturally hosted by pigs, can colonize the human stomach in the context of gastric diseases such as gastric mucosa-associated lymphoid tissue (MALT) lymphoma. Because H. suis has been successfully isolated from pigs, but not from humans, evidence linking human H. suis infection to gastric diseases has remained incomplete. In this study, we successfully in vitro cultured H. suis directly from human stomachs. Unlike Helicobacter pylori, the viability of H. suis decreases significantly on neutral pH; therefore, we achieved this using a low-pH medium for transport of gastric biopsies. Ultimately, we isolated H. suis from three patients with gastric diseases, including gastric MALT lymphoma. Successful eradication of H. suis yielded significant improvements in endoscopic and histopathological findings. Oral infection of mice with H. suis clinical isolates elicited gastric and systemic inflammatory responses; in addition, progression of gastric mucosal metaplasia was observed 4 mo postinfection. Because H. suis could be isolated from the stomachs of infected mice, our findings satisfied Koch's postulates. Although further prospective clinical studies are needed, H. suis, like H. pylori, is likely a gastric pathogen in humans. Furthermore, comparative genomic analysis of H. suis using complete genomes of clinical isolates revealed that the genome of each H. suis isolate contained highly plastic genomic regions encoding putative strain-specific virulence factors, including type IV secretion system-associated genes, and that H. suis isolates from humans and pigs were genetically very similar, suggesting possible pig-to-human transmission.
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79
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Aibara N, Ohyama K, Nakamura M, Nakamura H, Tamai M, Kishikawa N, Kawakami A, Tsukamoto K, Nakashima M, Kuroda N. Investigation of immune complexes formed by mitochondrial antigens containing a new lipoylated site in sera of primary biliary cholangitis patients. Clin Exp Immunol 2021; 204:335-343. [PMID: 33605437 DOI: 10.1111/cei.13588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 02/03/2021] [Accepted: 02/12/2021] [Indexed: 11/30/2022] Open
Abstract
Primary biliary cholangitis (PBC) is characterized by the presence of serum anti-mitochondrial autoantibodies (AMAs). To date, four antigens among the 2-oxo-acid dehydrogenase complex family, which commonly have lipoyl domains as an epitope, have been identified as AMA-corresponding antigens (AMA-antigens). It has recently been reported that AMAs react more strongly with certain chemically modified mimics than with the native lipoyl domains in AMA-antigens. Moreover, high concentrations of circulating immune complexes (ICs) in PBC patients have been reported. However, the existence of ICs formed by AMAs and their antigens has not been reported to date. We hypothesized that AMAs and their antigens formed ICs in PBC sera, and analyzed sera of PBC and four autoimmune diseases (Sjögren's syndrome, systemic lupus erythematosus, systemic scleroderma, and rheumatoid arthritis) using immune complexome analysis, in which ICs are separated from serum and are identified by nano-liquid chromatography-tandem mass spectrometry. To correctly assign MS/MS spectra to peptide sequences, we used a protein-search algorithm that including lipoylation and certain xenobiotic modifications. We found three AMA-antigens, the E2 subunit of the pyruvate dehydrogenase complex (PDC-E2), the E2 subunit of the 2-oxo-glutarate dehydrogenase complex (OGDC-E2) and dihydrolipoamide dehydrogenase binding protein (E3BP), by detecting peptides containing lipoylation and xenobiotic modifications from PBC sera. Although the lipoylated sites of these peptides were different from the well-known sites, abnormal lipoylation and xenobiotic modification may lead to production of AMAs and the formation ICs. Further investigation of the lipoylated sites, xenobiotic modifications, and IC formation will lead to deepen our understanding of PBC pathogenesis.
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Nakamura M, Kodama Y, Øverby A, Takahashi S, Ohshima K, Suzuki H, Murayama SY, Matsui H. Helicobacter suis Infection in Mouse Induced not Only Gastric, but Hepatic and Pulmonary MALT Lymphoma: Relation to Substance P. Curr Pharm Des 2021; 26:3039-3045. [PMID: 32329683 DOI: 10.2174/1381612826666200424163506] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 04/10/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND The hepatic and pulmonary MALT lymphoma (mucosa-associated lymphoid tissue lymphoma) is clinically occasionally observed but its pathogenesis is unknown and thought to be important to establish the treatment strategy. OBJECTIVES The present study was designed to clarify the characteristics of these lymphomas and the effect of the Helicobacter eradication regimen and substance P antagonist. METHODS After the long term infection of Helicobacter suis to the C57BL/6 mice stomach, the whole organ was surveyed pathologically. Histochemical characteristics of the lesion and the localization of bacteria were observed. In addition, the effect of the administration of antibiotics and a proton pump inhibitor or the substance P antagonist was investigated. RESULTS We have detected the hepatic and pulmonary MALT lymphoma after the long term infection. In situ hybridization study revealed the positive reaction of Helicobacter suis in the hepatic and pulmonary MALT lymphoma. After the administration of antibiotics and a proton pump inhibitor, the bacterial number has significantly decreased and the tumor size in the fundus, liver and lung markedly reduced. Substance P immunoreactivity was clearly shown in the lymphoma cells in the liver and lung, and the spantide II administration induced the marked decrease in the size of tumors. CONCLUSION By our experiments using the long term infection of Helicobacter suis to the C57BL/6 mice, we have detected the liver and pulmonary MALT lymphoma. In situ hybridization study suggested the direct interaction of this bacterium to the etiology of these lesions. Substance P within the lymphoma cells was suggested to work on the maintenance of the extragastric MALT lymphoma.
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Minami M, Nakamura M. Effect of Haskap (Lonicera caerulea) on streptococcus pneumoniae infected aged-mouse. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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82
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Kobayashi K, Wada A, Nakamura M, Kuroda A, Kido S, Harada D, Kuwahata M. Influence of postoperative infusion of amino acids and exogenous albumin on albumin synthesis in surgically stressed rats. Clin Nutr ESPEN 2020. [DOI: 10.1016/j.clnesp.2020.09.858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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83
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Kawamoto H, Higashitarumizu N, Nagamura N, Nakamura M, Shimamura K, Ohashi N, Nagashio K. Micrometer-scale monolayer SnS growth by physical vapor deposition. NANOSCALE 2020; 12:23274-23281. [PMID: 33206097 DOI: 10.1039/d0nr06022d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Recently, monolayer SnS, a two-dimensional group IV monochalcogenide, was grown on a mica substrate at the micrometer-size scale by the simple physical vapor deposition (PVD), resulting in the successful demonstration of its in-plane room temperature ferroelectricity. However, the reason behind the monolayer growth remains unclear because it had been considered that the SnS growth inevitably results in a multilayer thickness due to the strong interlayer interaction arising from lone pair electrons. Here, we investigate the PVD growth of monolayer SnS from two different feed powders, highly purified SnS and commercial phase-impure SnS. Contrary to expectations, it is suggested that the mica substrate surface is modified by sulfur evaporated from the Sn2S3 contaminant in the as-purchased powder and the lateral growth of monolayer SnS is facilitated due to the enhanced surface diffusion of SnS precursor molecules, unlike the growth from the highly purified powder. This insight provides a guide to identify further controllable growth conditions.
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Noborio R, Nomura Y, Nakamura M, Nishida E, Kiyohara T, Tanizaki H, Morita A. Efficacy of 308-nm excimer laser treatment for refractory vitiligo: a case series of treatment based on the minimal blistering dose. J Eur Acad Dermatol Venereol 2020; 35:e287-e289. [PMID: 33232541 DOI: 10.1111/jdv.17047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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85
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Nakamura M, Obayashi M, Yoshimitsu M, Kato H, Morita A. Comparative whole-exome sequencing of an ultra-late recurrent malignant melanoma. Br J Dermatol 2020; 184:762-763. [PMID: 33205417 DOI: 10.1111/bjd.19680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 11/12/2020] [Accepted: 11/12/2020] [Indexed: 11/29/2022]
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86
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Kosugi S, Ueda Y, Abe H, Mishima T, Shinouchi K, Ozaki T, Takayasu K, Iida Y, Ohashi T, Toriyama C, Nakamura M, Date M, Uematsu M, Koretsune Y. Angioscopic evaluation of vascular healing at 1 and 12 months after drug-coated stent implantation. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Polymer- and carrier-free Biolimus-A9-coated stent (DCS) is expected better vascular healing compared with conventional durable polymer drug-eluting stents (DES). Moreover, DCS had been demonstrated in clinical trials to allow one-month short dual antiplatelet therapy, which might achieve sufficient healing at only 1 month after implantation. However, the process of vascular healing after DCS implantation has not been elucidated by angioscopic observation.
Purpose
To evaluate the process of vascular healing at 1 month and 12 months after DCS implantation.
Methods
This study included 57 patients treated with DCS or durable polymer everolimus-eluting stents (EES) in our hospital from April 2017 to April 2019. Firstly, the angioscopic findings of DCS at 1 month (n=16) and 12 months (n=14) after implantation were respectively compared with EES at 12 months after implantation (EES-12, n=35) as a standard healing status of DES. Secondary, angioscopic findings of DCS at 1 month and 12 months after implantation were compared among the serially observed eight patients. Neointimal coverage (NIC) grade, yellow colour grade, and the presence of thrombus were evaluated. NIC grade was classified as grade 0 (no neointimal coverage), grade 1 (struts were bulged into lumen but covered), grade 2 (struts were embedded in the neointima but visible), or grade 3 (struts were fully embedded and invisible). Yellow colour grade was classified as grade 0 (white), grade 1 (light yellow), grade 2 (yellow), or grade 3 (intensive yellow).
Results
At 1 month after DCS implantation, dominant NIC grade was lower (0.3±0.5 vs. 1.5±0.7, p<0.001) and the frequency of thrombus was higher (38% vs. 6%, p=0.008) than EES-12. On the other hands, at 12 months after DCS implantation, dominant NIC grade was higher (2.1±0.6 vs. 1.5±0.7, p=0.013) and the frequency of thrombus was not different (7% vs. 6%, p=1.000) in comparison with EES-12. By serial observation of DCS, dominant NIC grade was higher at 12 months than at 1 month (2.3±0.5 vs. 0.4±0.5, p<0.001), while yellow colour grade (1.0±0.5 vs. 1.5±1.2, p=0.227) and the frequency of thrombus adhesion (0% vs. 38%, p=0.200) were not different.
Conclusion
Compared with EES-12, vascular healing of DCS was inferior at 1 month but superior at 12 months.
Figure 1
Funding Acknowledgement
Type of funding source: None
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Nakamura M, Imamura T, Ueno H, Kinugawa K. Impact of the angle between aortic and mitral annulus on the occurrence of hemolysis during Impella support. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Hemolysis of Impella is known as a major comorbidity and adequate device positioning and optimization of volume status are recommended. However, we have sometimes experienced hemolysis refractory to these adjustments and anatomical feature appears to be crucial in such cases.
Methods
We enrolled 26 patients (median 71 y; BSA 1.6 m2; LVEF 27%) with cardiogenic shock who received Impella insertion from March 2018 to November 2019. The angle of the aortic and mitral annulus which was drawn at the apical 3-chamber view on echocardiography, just before or after Impella insertion was measured (Figure). Hemolytic event was defined as follows; (1) Gross dark red urine and elevation of serum LDH level after initiation of Impella support were seen and subsequently required to lower the support level of Impella under P6. (2) Blood sample data indicating hemolysis (i.e. elevation of LDH level over 1.5 fold of normal range, anemia complicated with decreased haptoglobin, the elevation of total bilirubin level accompanied indirect bilirubin elevation) was found and subsequently required to initiate continuous hemodiafiltration.
Results
The freedom from hemolytic event was significantly lower in the narrow angle group (<126.5 degrees, Figure A) compared with the wide angle group (≥126.5 degrees, Figure B) (18% vs 83%, p<0.0001). The narrow angle was a significant risk factor of hemolytic event with an unadjusted hazard ratio 13.9 (95% confidence interval 2.88–67.2, p=0.0499) and a hazard ratio 15.5 (95% confidence interval 3.15–76.3, p=0.0008) adjusted for lower pulmonary artery pulsatility index, which was another risk factor significant in the univariate analyses. Furthermore, 30-day survival rate was significantly lower in the narrow angle group compared with the wide angle group (63% vs 100%, p=0.0116).
Conclusions
The narrow angle (<126.5 degrees) was an independent risk factor of hemolytic event and 30-day survival was lower compared with the wide angle group.
Figure 1
Funding Acknowledgement
Type of funding source: None
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Nakamura M, Funakoshi T, Kataoka S, Horimatsu T, Nishikawa Y, Matsubara T, Mizukami T, Goto T, Tsuchihashi K, Baba E, Tsumura T, Mihara Y, Hamaguchi T, Muto M, Yanagita M. 348P Anti-VEGF inhibitors and renal safety in onco-nephrology consortium: Urinary protein/creatinine ratio (VERSiON UP study). Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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89
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Okumura M, Hojo H, Nakamura N, Zenda S, Motegi A, Nakamura M, Hirano Y, Kageyama S, Raturi V, Akimoto T. PO-1261: Radiation pneumonitis after palliative radiotherapy in patients with interstitial lung disease. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01279-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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90
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Matsuo Y, Hiraoka M, Karasawa K, Kokubo M, Sakamoto T, Nakamura M, Morita S, Inokuchi H, Mizowaki T. A Multi-institutional Phase II Study of Dynamic Tumor Tracking SBRT for the Lung. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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91
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Itoh T, Toda N, Osaki T, Maegawa Y, Yoshizawa R, Ishikawa Y, Nishiyama O, Yoshizawa M, Nakajima S, Nakamura M, Morino Y. Impact of east Japan earthquake disaster with massive tsunami for prevalence of Takotsubo syndrome – a multicenter regional registry before and after east Japan earthquake disaster. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Previous studies demonstrated Takotsubo syndrome (TS) was easy provoked by earthquake disaster. However, a previous other regional report demonstrated TS was not increased after 2011 east Japan earthquake disaster. The purpose of this study was to clarify incidence of TS after the earthquake disaster in Iwate prefecture during long term period.
Method
Consecutive hospitalized TS patients were registered during 8 years between 2009 and 2016 in our medical university and five Iwate prefecture hospitals. Moreover, patients were divided into two groups, i.e., those with the inland and those with tsunami-stricken area groups. Prevalence of TS were calculated by standard incidence ratio (SIR) before and after the earthquake disaster. Moreover, long-term prognosis in the both groups was compared using Kaplan-Meier analysis.
Results
A total of 112 TS (male 25 and female 87) were registered from acute coronary syndrome registry in each hospital (n=4,163). Averaged age was 75.3 year-old. A total number of TS just after the two months of the earthquake (March and April 2011) was nine and significance monthly variation was observed comparing with the other months (p=0.029). SIR before and after the disaster is as following Figure. There were no significant differences for long-term prognosis between the two groups (p=0.20).
Conclusion
Incidence of TS was increased in acute phase after east Japan earthquake disaster. However, significance increases were maintained during long-term period, although number of TS was decreased after acute phase. TS is increased not only acute but also chronic phase after the serious earthquake disaster.
Standard incidence ratio
Funding Acknowledgement
Type of funding source: None
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Enomoto M, Yamada T, Nakamura M, Ishiyama S, Yokomizo H, Kosugi C, Sonoda H, Ishibashi K, Kuramochi H, Nozawa K, Yoshida Y, Ohta R, Hasegawa S, Ichikawa D, Hashiguchi Y, Hirata K, Katsumata K, Ishida H, Koda K, Sakamoto K. 89P Biomarker analysis of regorafenib dose escalation study (RECC study): A phase II multicenter clinical trial in Japan. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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93
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Iizuka Y, Matsuo Y, Nakamura M, Mizowaki T. Reduction Of Kidney Doses Using Dynamic Wave-Arc Therapy For Spinal Metastases To The Lower Thoracic And Upper Lumbar Vertebra Indicated For Spinal Stereotactic Body Radiotherapy. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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94
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Yoshimura M, Hiraoka M, Kokubo M, Sakamoto T, Karasawa K, Matsuo Y, Nakamura M, Goto Y, Morita S, Mizowaki T. A Multi-institutional Phase II Study of Dynamic Tumor Tracking IMRT for Locally Advanced Pancreatic Cancer. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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95
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Hiramoto A, Suzuki Y, Ali A, Aoki S, Berns L, Fukuda T, Hanaoka Y, Hayato Y, Ichikawa A, Kawahara H, Kikawa T, Koga T, Komatani R, Komatsu M, Kosakai Y, Matsuo T, Mikado S, Minamino A, Mizuno K, Morimoto Y, Morishima K, Naganawa N, Naiki M, Nakamura M, Nakamura Y, Nakano N, Nakano T, Nakaya T, Nishio A, Odagawa T, Ogawa S, Oshima H, Rokujo H, Sanjana I, Sato O, Shibuya H, Sugimura K, Suzui L, Takagi H, Takao T, Tanihara Y, Yasutome K, Yokoyama M. First measurement of
ν¯μ
and
νμ
charged-current inclusive interactions on water using a nuclear emulsion detector. Int J Clin Exp Med 2020. [DOI: 10.1103/physrevd.102.072006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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96
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Nakamura M, Øverby A, Michimae H, Matsui H, Takahashi S, Mabe K, Shimoyama T, Sasaki M, Terao S, Kamada T, Yanaka A, Iwamoto J, Tanabe S, Tari A, Nasu S, Suzuki H, Yamagata Murayama S. PCR analysis and specific immunohistochemistry revealing a high prevalence of non-Helicobacter pylori Helicobacters in Helicobacter pylori-negative gastric disease patients in Japan: High susceptibility to an Hp eradication regimen. Helicobacter 2020; 25:e12700. [PMID: 32790220 DOI: 10.1111/hel.12700] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 04/14/2020] [Accepted: 04/19/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND The clinical significance of non-Helicobacter pylori Helicobacter (NHPH) is still unknown. There are many reports of NHPH-infected patients suffering from gastric diseases. Here, we investigated the polymerase chain reaction (PCR) positivity of NHPH infection in gastric disease patients who were negative for H. pylori (Hp) by the rapid urease test and by pathological observation. MATERIALS AND METHODS We collected the 296 endoscopically obtained gastric mucosal samples of Hp-negative gastric disease patients diagnosed based on a rapid urease test and pathology from 17 hospitals in Japan from September 2013 to June 2019, and we analyzed the existence of Hp and NHPH by PCR. The samples were also treated by indirect immunohistochemistry using an anti-Helicobacter suis VacA paralog antibody and were observed by confocal laser microscopy. RESULTS Among the 236 non-Hp-eradicated cases, 49 cases (20.8%) were positive for NHPH. Among them, 20 cases were positive for Helicobacter suis, 7 cases were positive for Helicobacter heilmannii sensu stricto/ Helicobacter ailurogastricus (Hhss/Ha), and the other 22 cases could not be identified. The regional differences in the infection rates were significant. Forty percent of the nodular gastritis cases, 24% of the MALT lymphoma, 17% of the chronic gastritis cases, and 33% of the gastroduodenal ulcer cases were NHPH positive. Forty-five patients had been treated with one of the four types of combinations of a proton pump inhibitor and two antibiotics, and in all of these cases, the NHPH diagnosed by PCR was successfully eradicated. Immunohistochemistry using the Helicobacter suis-specific HsvA antibody coincided well with the PCR results. Among the 29 post-Hp eradication cases, three were NHPH positive, including one Hhss/Ha-positive case. Thus, approx. 20% of the Hp-negative non-Hp-eradicated gastric disease patients treated at 17 hospitals in Japan were infected with NHPH.
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Nakamura M, Satoh N, Tsukada H, Mizuno T, Fujii W, Suzuki A, Horita S, Nangaku M, Suzuki M. Stimulatory effect of insulin on H+-ATPase in the proximal tubule via the Akt/mTORC2 pathway. Physiol Int 2020; 107:376-389. [PMID: 32990653 DOI: 10.1556/2060.2020.00030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Accepted: 06/12/2020] [Indexed: 11/19/2022]
Abstract
Purpose Acid-base transport in renal proximal tubules (PTs) is mainly sodium-dependent and conducted in coordination by the apical Na+/H+ exchanger (NHE3), vacuolar H+-adenosine triphosphatase (V-ATPase), and the basolateral Na+/HCO3- cotransporter. V-ATPase on PTs is well-known to play an important role in proton excretion. Recently we reported a stimulatory effect of insulin on these transporters. However, it is unclear whether insulin is involved in acid-base balance in PTs. Thus, we assessed the role of insulin in acid-base balance in PTs. Methods V-ATPase activity was evaluated using freshly isolated PTs obtained from mice, and specific inhibitors were then used to assess the signaling pathways involved in the observed effects. Results V-ATPase activity in PTs was markedly enhanced by insulin, and its activation was completely inhibited by bafilomycin (a V-ATPase-specific inhibitor), Akt inhibitor VIII, and PP242 (an mTORC1/2 inhibitor), but not by rapamycin (an mTORC1 inhibitor). V-ATPase activity was stimulated by 1 nm insulin by approximately 20% above baseline, which was completely suppressed by Akt1/2 inhibitor VIII. PP242 completely suppressed the insulin-mediated V-ATPase stimulation in mouse PTs, whereas rapamycin failed to influence the effect of insulin. Insulin-induced Akt phosphorylation in the mouse renal cortex was completely suppressed by Akt1/2 inhibitor VIII and PP242, but not by rapamycin. Conclusion Our results indicate that stimulation of V-ATPase activity by insulin in PTs is mediated via the Akt2/mTORC2 pathway. These results reveal the mechanism underlying the complex signaling in PT acid-base balance, providing treatment targets for renal disease.
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Yoshino T, Kotaka M, Manaka D, Eto T, Hasegawa J, Takagane A, Nakamura M, Kato T, Munemoto Y, Nakamura F, Bando H, Taniguchi H, Sakamoto Y, Shiozawa M, Nishi M, Horiuchi T, Mizushima T, Yamanaka T, Ohtsu A, Mori M. 401MO OS and long-term DFS with 3- vs. 6-month adjuvant oxaliplatin and fluoropyrimidine-based therapy for stage III colon cancer patients: A randomized phase III ACHIEVE trial. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Satake H, Kotaka M, Ishibashi K, Tsuji Y, Kataoka M, Nakamura M, Nagata N, Sakamoto J, Oba K, Mishima H. 460P Update analysis of phase II study of oxaliplatin based regimen in relapsed colorectal cancer patients treated with oxaliplatin based adjuvant chemotherapy: INSPIRE study. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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100
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Sakanaka K, Ishida Y, Fujii K, Ishihara Y, Nakamura M, Hiraoka M, Mizowaki T. Radiation Dose-escalated Chemoradiotherapy Using Simultaneous Integrated Boost Intensity-Modulated Radiotherapy for Locally Advanced Unresectable Thoracic Oesophageal Squamous Cell Carcinoma: A Single-institution Phase I Study. Clin Oncol (R Coll Radiol) 2020; 33:191-201. [PMID: 32768158 DOI: 10.1016/j.clon.2020.07.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 05/22/2020] [Accepted: 07/15/2020] [Indexed: 12/25/2022]
Abstract
AIMS About 80% of cases of locally advanced unresectable thoracic oesophageal squamous cell carcinoma recur within the irradiation fields after chemoradiotherapy. Radiation dose escalation using advanced radiotherapy techniques is expected to improve clinical outcomes by reducing local and regional recurrence. The current study aimed to determine the recommended escalated radiation dose for these patients. MATERIALS AND METHODS Patients with locally advanced unresectable thoracic oesophageal squamous cell carcinoma with good performance status underwent chemoradiotherapy using simultaneous integrated boost intensity-modulated radiotherapy (SIB-IMRT) with elective nodal irradiation. SIB-IMRT was delivered in five fractions per week. The radiation dose to the unresectable gross tumour was escalated from 66 Gy to a planned maximum dose of 72 Gy in 3 Gy increments in a standard 3 + 3 design. The doses to the resectable component, superficial tumours and elective nodal regions were fixed as 60, 51 and 48 Gy, respectively. Cisplatin and 5-fluorouracil were concurrently administered. Dose-limiting toxicity (DLT) was defined as acute grade 3 oesophagitis, grade 2 pneumonitis, grade 2 cardiac toxicity and a failure to complete planned radiotherapy within 60 days. Locoregional control and overall survival were estimated using the Kaplan-Meier method. Nine patients were enrolled. RESULTS DLTs occurred in one of six and two of three patients at doses of 66 and 69 Gy, respectively. All DLTs were grade 3 oesophagitis. The recommended dose was determined as 66 Gy delivered in 30 fractions based on the predefined criteria. With a median follow-up period of 23 months, the 1-year locoregional control and overall survival rates were 67 (95% confidence interval = 19-90) and 78% (95% confidence interval = 36-94), respectively. CONCLUSION The recommended radiation dose in chemoradiotherapy using SIB-IMRT with elective nodal irradiation was 66 Gy delivered in 30 fractions.
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