Publications by authors named "Tonouchi A"

Reductive soil disinfestation (RSD), also known as biological soil disinfestation, is a bioremediation method used to suppress soil-borne plant pathogens by stimulating the activity of indigenous anaerobic bacteria in the soil. An anaerobic bacterial strain (E14) was isolated from an anoxic soil sample subjected to RSD treatment and then comprehensively characterized. Cells of the strain were Gram-stain-positive, curved to sigmoid, and spore-forming rods.

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Facultatively anaerobic bacterial strains were isolated from samples of a methanogenic reactor and, based on 16S rRNA gene sequences, found to be affiliated with the family in the phylum Four strains with almost-identical 16S rRNA gene sequences were comprehensively characterized. The most closely related species to the strains was BL-34 (96.4 % sequence similarity).

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In Aspergillus oryzae, the tyrosinase-encoding gene melB causes undesirable browning of sake and sake lees. This gene is known to be expressed specifically in solid-state culture; however, its expression mechanisms remain unknown. Here, we evaluated the possible factors affecting the transcription of melB and found that the copper ion (Cu2+) significantly enhanced the transcription level of melB in solid-state culture.

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Long-term field monitoring of leaf pigment content is informative for understanding plant responses to environments distinct from regulated chambers but is impractical by conventional destructive measurements. We developed PlantServation, a method incorporating robust image-acquisition hardware and deep learning-based software that extracts leaf color by detecting plant individuals automatically. As a case study, we applied PlantServation to examine environmental and genotypic effects on the pigment anthocyanin content estimated from leaf color.

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An obligately anaerobic bacterial strain (WR041) was isolated from a plant residue sample in a methanogenic reactor. Cells of the strain were Gram-stain-negative, non-motile, non-spore-forming rods. JCM 13650 was the closest species of the strain based on 16S rRNA gene sequencing (98.

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We developed a computer-aided detection (CADe) system to detect and localize colorectal lesions by modifying You-Only-Look-Once version 3 (YOLO v3) and evaluated its performance in two different settings. The test dataset was obtained from 20 randomly selected patients who underwent endoscopic resection for 69 colorectal lesions at the Jikei University Hospital between June 2017 and February 2018. First, we evaluated the diagnostic performances using still images randomly and automatically extracted from video recordings of the entire endoscopic procedure at intervals of 5 s, without eliminating poor quality images.

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An obligately anaerobic bacterial strain (CTTW) belonging to the family within the class was isolated from an anoxic soil sample subjected to biological or reductive soil disinfestation. Cells of the strain were Gram-stain-positive, short rods with peritrichous flagella. The strain was saccharolytic and decomposed polysaccharides, chitin, xylan and β-1,3-glucan.

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A series of cyclohumulanoids, i.e., tricocerapicanols A-C (-), tricoprotoilludenes A () and B (), tricosterpurol (), and tricoilludins A-C (-) were isolated along with known violascensol () and omphadiol () from the culture broth of , an inedible but not toxic mushroom.

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Background: We have developed the computer-aided detection (CADe) system using an original deep learning algorithm based on a convolutional neural network for assisting endoscopists in detecting colorectal lesions during colonoscopy. The aim of this study was to clarify whether adenoma miss rate (AMR) could be reduced with CADe assistance during screening and surveillance colonoscopy.

Methods: This study was a multicenter randomized controlled trial.

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Biological soil disinfestation (BSD) or reductive soil disinfestation (RSD) is a bioremediation method used to suppress or eliminate soil-borne plant pathogens by stimulating activities of indigenous anaerobic bacteria of the soil. An anaerobic bacterial strain (TW1) was isolated from an anoxic soil sample subjected to the BSD treatment and comprehensively characterized. Cells of the strain were Gram-stain-positive, slightly curved and motile rods producing terminal spores.

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Gastric stump cancer (GSC) has distinct clinicopathological characteristics from primary gastric cancer. However, the detailed molecular and pathological characteristics of GSC remain to be clarified because of its rarity. In this study, a set of tissue microarrays from 89 GSC patients was analysed by immunohistochemistry and in situ hybridisation.

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A 47-year-old woman visited a neighboring hospital because of lower abdominal pain and high fever. She was diagnosed with acute pyelonephritis and administered(oral)antibiotics. However, there was no sign of improvement.

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Between 2003 and 2017, 13 patients with primary small bowel adenocarcinoma(SBA)were treated at our hospital. Tumors developed in the duodenum in 6 patients and in the jejunum in 7 patients. The median age of the patients was 62 (range: 31-83)years and male/female ratio was 10/3.

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Background And Objectives: The lymphatic flow around the esophagogastric junction is complicated. Therefore, it is unclear whether lymphatic invasion in the esophageal region (eLI) and in the gastric region (gLI) in patients with adenocarcinoma of the esophagogastric junction (AEG) equally affect the incidence of lymph node metastases (LNM), and consequently, survival.

Methods: We retrospectively reviewed clinicopathological data of 175 patients with AEG between January 2008 and July 2017.

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Background: Insufficient information is available about the long-term outcomes of patients with Siewert type II adenocarcinoma of the esophagogastric junction (AEG) who undergo laparoscopic transhiatal approach (LTH). Here we evaluated the oncological safety of LTH for patients with Siewert type II AEG compared with the open transhiatal approach (OTH).

Methods: Subjects included 79 patients with Siewert type II AEG who underwent gastrectomy combined with lower esophagectomy from 2008 to 2018 at our institution.

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Purpose: Lymphatic invasion (LI) is associated with lymph node metastasis (LNM) and a poor prognosis in patients with early gastric cancer (EGC). Although the impact of the LI volume on LNM has been described, no reports have assessed the impact of its depth on LNM.

Methods: A total of 360 EGC patients with pathologically proven LI who underwent radical gastrectomy with lymphadenectomy between January 2005 and June 2018 at our institution were extracted from our database.

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Neomacrophorins I-III (1-3) and X have previously been isolated from Trichoderma sp. 1212-03. Their mode of action against cancer cells and the mechanism of biosynthesis of the characteristic [4.

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Arundifungin (1) has been reported as a potent antifungal agent against Candida and Aspergillus spp; however, only its planar structure has been disclosed. This paper describes the assignment of the relative and absolute configuration of 1, which includes (a) determination of the relative configuration of the ABCD polycyclic ring moiety on the basis of detailed nuclear magnetic resonance (NMR) analysis, followed by the confirmation with density functional theory (DFT)-based C NMR chemical shift calculations, (b) determination of the absolute configuration of the ABCD polycyclic ring moiety by observing a positive Cotton effect at 217 nm because of the C-8/C-9 tetrasubstituted double bond and its reproduction using DFT calculations, (c) determination of the configurational relationship between C-17 and C-20 by a combination of nuclear Overhauser effect (NOE) analysis and DFT-based conformational analysis, and (d) determination of the relative and absolute configuration of the C-24 and C-25 asymmetric centers on the acyclic side chain by a combination of chemical derivatization including modified Mosher's method and DFT-based conformational analysis, followed by electronic circular dichroism (ECD) spectral reproduction. Present study also discovered 26-deoxyarundifungin (2) of which relative structure was readily elucidated by H and C spectral comparison with those of 1.

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Background: Extranodal metastasis is an isolated tumor nodule without a residual lymph node structure and has been reported as a poor prognostic factor in gastric cancer. The aim of this study is to assess the prognostic value of extranodal metastasis, especially from the viewpoint of its anatomical distribution.

Methods: A total of 139 consecutive gastric cancer patients who underwent curative surgery with lymph node metastasis between 2008 and 2009 were included.

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Article Synopsis
  • The novel compound 12-deoxytrichodermin was isolated from the fungus Trichoderma sp. 1212-03 for research on its effects against colon cancer cells and a specific fungus.
  • The study indicated that the presence of the 12-epoxide group is vital for the effectiveness of certain trichothecenes in killing cancer cells, while it's not necessary for others.
  • However, the 12-epoxide is essential for the antifungal properties of trichothecenes, emphasizing its importance in different biological activities.
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An aerobic bacterial strain designated AX-7 was isolated from the trunk surface of a Japanese beech (Fagus crenata). Cells of strain AX-7 were Gram-stain-negative, non-spore-forming, non-motile rods (1.0-1.

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Mono-ADP-ribosylation of an (arginine) protein catalyzed by ADP-ribosyltransferase 1 (ART1) - i.e., transfer of ADP-ribose from NAD to arginine - is reversed by ADP-ribosylarginine hydrolase 1 (ARH1) cleavage of the ADP-ribose-arginine bond.

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Parkinson's disease (PD) is a common neurodegenerative disorder characterized by slow and progressive degeneration of dopaminergic neurons in the substantia nigra pars compacta (SNc). Levodopa (l-Dopa), the current main treatment for PD, supplies dopamine, but it does not prevent neurodegeneration. There is thus no promising remedy for PD.

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