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Shchepin ON, López Villalba Á, Inoue M, Prikhodko IS, Erastova DA, Okun MV, Woyzichovski J, Yajima Y, Gmoshinskiy VI, Moreno G, Novozhilov YK, Schnittler M. DNA barcodes reliably differentiate between nivicolous species of Diderma (Myxomycetes, Amoebozoa) and reveal regional differences within Eurasia. Protist 2024; 175:126023. [PMID: 38368650 DOI: 10.1016/j.protis.2024.126023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 01/03/2024] [Accepted: 02/09/2024] [Indexed: 02/20/2024]
Abstract
The nivicolous species of the genus Diderma are challenging to identify, and there are several competing views on their delimitation. We analyzed 102 accessions of nivicolous Diderma spp. that were sequenced for two or three unlinked genes to determine which of the current taxonomic treatments is better supported by molecular species delimitation methods. The results of a haplotype web analysis, Bayesian species delimitation under a multispecies coalescent model, and phylogenetic analyses on concatenated alignments support a splitting approach that distinguishes six taxa: Diderma alpinum, D. europaeum, D. kamchaticum, D. meyerae, D. microcarpum and D. niveum. The first two approaches also support the separation of Diderma alpinum into two species with allopatric distribution. An extended dataset of 800 specimens (mainly from Europe) that were barcoded with 18S rDNA revealed only barcode variants similar to those in the species characterized by the first data set, and showed an uneven distribution of these species in the Northern Hemisphere: Diderma microcarpum and D. alpinum were the only species found in all seven intensively sampled mountain regions. Partial 18S rDNA sequences serving as DNA barcodes provided clear signatures that allowed for unambiguous identification of the nivicolous Diderma spp., including two putative species in D. alpinum.
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Affiliation(s)
- Oleg N Shchepin
- Institute of Botany and Landscape Ecology, University Greifswald, Soldmannstr. 15, 17487 Greifswald, Germany; Komarov Botanical Institute of the Russian Academy of Sciences, Laboratory of Systematics and Geography of Fungi, Prof. Popov Street 2, 197376 St. Petersburg, Russia.
| | - Ángela López Villalba
- Institute of Botany and Landscape Ecology, University Greifswald, Soldmannstr. 15, 17487 Greifswald, Germany
| | - Maho Inoue
- Institute of Botany and Landscape Ecology, University Greifswald, Soldmannstr. 15, 17487 Greifswald, Germany
| | - Ilya S Prikhodko
- Komarov Botanical Institute of the Russian Academy of Sciences, Laboratory of Systematics and Geography of Fungi, Prof. Popov Street 2, 197376 St. Petersburg, Russia
| | - Daria A Erastova
- Komarov Botanical Institute of the Russian Academy of Sciences, Laboratory of Systematics and Geography of Fungi, Prof. Popov Street 2, 197376 St. Petersburg, Russia
| | - Mikhail V Okun
- Komarov Botanical Institute of the Russian Academy of Sciences, Laboratory of Systematics and Geography of Fungi, Prof. Popov Street 2, 197376 St. Petersburg, Russia
| | - Jan Woyzichovski
- Institute of Botany and Landscape Ecology, University Greifswald, Soldmannstr. 15, 17487 Greifswald, Germany
| | - Yuka Yajima
- Department of Science and Informatics, Muroran Institute of Technology, Mizumoto-cho 27-1, 0508585 Muroran, Japan
| | - Vladimir I Gmoshinskiy
- Department of Mycology and Algology, Faculty of Biology, Moscow State University, Leninskie Gory 1/12, Moscow 119992, Russia
| | - Gabriel Moreno
- Departamento Ciencias de la Vida (Botanica), Universidad de Alcala, Alcala de Henares, Madrid 28805, Spain
| | - Yuri K Novozhilov
- Komarov Botanical Institute of the Russian Academy of Sciences, Laboratory of Systematics and Geography of Fungi, Prof. Popov Street 2, 197376 St. Petersburg, Russia
| | - Martin Schnittler
- Institute of Botany and Landscape Ecology, University Greifswald, Soldmannstr. 15, 17487 Greifswald, Germany
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2
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Hoshino T, Yajima Y, Degawa Y, Kume A, Tkachenko OB, Matsumoto N. Life Cycle Plasticity in Typhula and Pistillaria in the Arctic and the Temperate Zone. Microorganisms 2023; 11:2028. [PMID: 37630589 PMCID: PMC10458498 DOI: 10.3390/microorganisms11082028] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/29/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023] Open
Abstract
Typhulaceae Jülich is one of the cold-adapted fungal families in basidiomycetes. The representative genera, Typhula (Pers.) Fr. and Pistillaria Fr., are distinguished by the discontinuity between stems and hymenia in the former and the continuity in the latter (Fries 1821). This taxonomic criterion is ambiguous, and consequently, the view of Karsten (1882) has been widely accepted: Typhula develops basidiomata from sclerotia, while basidiomata develop directly from substrata in Pistillaris. However, Corner (1970) observed basidiomata of Pistillaria petasitis S. Imai developing from sclerotia in Hokkaido, Japan. We later recognized that P. petasitis basidiomata also emerged directly from substrates on the ground in Hokkaido. An aberrant form of Typhula hyperborea H. Ekstr. was found in Upernavik, West Greenland. This specimen had a stem-like structure on a Poaceae plant, and sclerotia developed on its tip. Similar phenomena were found in other Typhula species in Japan. In this study, we aimed to elucidate the life cycle plasticity in the genera Typhula and Pistillaria through the interactions between their ecophysiological potential and environmental conditions in their localities. We collected and prepared strains of the above fungi from sclerotia or basidiomata, and we elucidated the taxonomical relationship and determined the physiological characteristics of our strains. Our findings imply that both Typhula and Pistillaria have the potential to produce sclerotia as well as the capacity for mycelial growth at ambient air temperatures in each locality where samples were collected. These findings suggest that Typhula spp. develope basidiomata not only from the sclerotia dispersed by the basidiospores but also from mycelia generated by the spore germination, which formed basidiomata multiple times, depending on their growth environments.
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Affiliation(s)
- Tamotsu Hoshino
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1, Tsukisamu-higashi, Toyohira-ku, Sapporo 062-8517, Japan
- Hachinohe Institute of Technology, Obiraki 88-1, Myo, Hachinohe 031-8501, Japan
- National Institute of Polar Research, 10-3, Midori-cho, Tachikawa, Tokyo 190-8518, Japan
| | - Yuka Yajima
- Graduate School of Engineering, Muroran Institute of Technology, Mizumoto-cho 27-1, Muroran 050-8585, Japan;
| | - Yosuke Degawa
- Sugadaira Research Station, Mountain Science Center, University of Tsukuba, Sugadairakogen, 1278-294, Ueda 386-2204, Japan;
| | - Atsushi Kume
- Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan;
| | - Oleg B. Tkachenko
- N.V. Tsitsin Main Botanical Garden, Russian Academy of Sciences, 4 Botanicheskaya Ul., 127276 Moscow, Russia;
| | - Naoyuki Matsumoto
- National Agriculture and Food Research Organization, Tsukuba 305-0856, Japan;
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3
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Abstract
The noncellular complex structures of fruiting body produced by a multinucleate large plasmodium are the distinct character of Myxomycetes. Although the fruiting body distinguishes myxomycetes from other amoeboid single-cell organisms, it is unclear how such complex structures arise out of a single cell. The present study investigated the detailed process of fruiting body formation in Lamproderma columbinum, the type species of the genus Lamproderma, at the cellular level. A single cell excretes cellular waste and excess water during the formation of the fruiting body by controlling its shape, secreted materials, and organelle distribution. These excretion phenomena lead to the morphology of the mature fruiting body. The results of this study suggest that the structures of the L. columbinum fruiting body are involved not merely in spore dispersal but also in the process of dehydration and self-cell cleaning of the single cell for the next generation.
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Affiliation(s)
- Yuka Yajima
- Department of Science and Informatics, Muroran Institute of Technology, Mizumoto-cho 27-1, 0508585, Muroran, Japan
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4
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Yajima Y. Revisiting the morphology of Lamproderma reveals incongruities among the taxonomic characteristics of higher classifications of Myxomycetes. Mycologia 2023; 115:225-235. [PMID: 36867578 DOI: 10.1080/00275514.2023.2170144] [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] [Indexed: 03/04/2023]
Abstract
Despite various attempts during the last few decades to establish a natural system for the Myxomycetes, researchers have not yet reached a consensus. One of the most drastic recent proposals is the movement of the genus Lamproderma, an almost a trans-subclass transfer. The traditional subclasses are not supported by current molecular phylogenies, and various higher classifications have been proposed during the last decade. However, the taxonomic characteristics on which the traditional higher classifications were based have not been reinvestigated. In the present study, the key species involved in this transfer, Lamproderma columbinum (the type species of the genus Lamproderma), was assessed using correlational morphological analysis of stereo, light, and electron microscopic images. Correlational analysis of the plasmodium, fruiting body formation, and the mature fruiting bodies revealed that several concepts of taxonomic characteristics that have been used to distinguish higher classifications are questionable. The results of this study indicate that caution is required when interpreting the evolution of morphological traits in Myxomycetes, as the current concepts are vague. The definitions of the taxonomic characteristics need a detailed research, and attention should be paid to the lifecycle timing of observations, before discussing a natural system for Myxomycetes.
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Affiliation(s)
- Yuka Yajima
- Department of Science and Informatics, Muroran Institute of Technology, Mizumoto-cho 27-1, 0508585, Muroran, Japan
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5
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Shchepin O, Novozhilov Y, Woyzichovski J, Bog M, Prikhodko I, Fedorova N, Gmoshinskiy V, Borg Dahl M, Dagamac NHA, Yajima Y, Schnittler M. Genetic structure of the protist Physarum albescens (Amoebozoa) revealed by multiple markers and genotyping by sequencing. Mol Ecol 2021; 31:372-390. [PMID: 34676941 DOI: 10.1111/mec.16239] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 09/26/2021] [Accepted: 10/08/2021] [Indexed: 01/05/2023]
Abstract
Myxomycetes are terrestrial protists with many presumably cosmopolitan species dispersing via airborne spores. A truly cosmopolitan species would suffer from outbreeding depression hampering local adaptation, while locally adapted species with limited distribution would be at a higher risk of extinction in changing environments. Here, we investigate intraspecific genetic diversity and phylogeography of Physarum albescens over the entire Northern Hemisphere. We sequenced 324 field collections of fruit bodies for 1-3 genetic markers (SSU, EF1A, COI) and analysed 98 specimens with genotyping by sequencing. The structure of the three-gene phylogeny, SNP-based phylogeny, phylogenetic networks, and the observed recombination pattern of three independently inherited gene markers can be best explained by the presence of at least 18 reproductively isolated groups, which can be seen as cryptic species. In all intensively sampled regions and in many localities, members of several phylogroups coexisted. Some phylogroups were found to be abundant in only one region and completely absent in other well-studied regions, and thus may represent regional endemics. Our results demonstrate that the widely distributed myxomycete species Ph. albescens represents a complex of at least 18 cryptic species, and some of these seem to have a limited geographical distribution. In addition, the presence of groups of presumably clonal specimens suggests that sexual and asexual reproduction coexist in natural populations of myxomycetes.
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Affiliation(s)
- Oleg Shchepin
- Laboratory of Systematics and Geography of Fungi, Komarov Botanical Institute of the Russian Academy of Sciences, St. Petersburg, Russia.,General Botany and Plant Systematics, Institute of Botany and Landscape Ecology, University of Greifswald, Greifswald, Germany
| | - Yuri Novozhilov
- Laboratory of Systematics and Geography of Fungi, Komarov Botanical Institute of the Russian Academy of Sciences, St. Petersburg, Russia
| | - Jan Woyzichovski
- General Botany and Plant Systematics, Institute of Botany and Landscape Ecology, University of Greifswald, Greifswald, Germany
| | - Manuela Bog
- General Botany and Plant Systematics, Institute of Botany and Landscape Ecology, University of Greifswald, Greifswald, Germany
| | - Ilya Prikhodko
- Laboratory of Systematics and Geography of Fungi, Komarov Botanical Institute of the Russian Academy of Sciences, St. Petersburg, Russia
| | - Nadezhda Fedorova
- Laboratory of Systematics and Geography of Fungi, Komarov Botanical Institute of the Russian Academy of Sciences, St. Petersburg, Russia.,Faculty of Biology, Saint Petersburg State University, Saint Petersburg, Russia
| | - Vladimir Gmoshinskiy
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia.,Polistovsky National Nature Reserve, Pskov Region, Russia
| | - Mathilde Borg Dahl
- General Botany and Plant Systematics, Institute of Botany and Landscape Ecology, University of Greifswald, Greifswald, Germany.,Institute of Microbiology, Center for Functional Genomics of Microbes, University of Greifswald, Greifswald, Germany
| | - Nikki H A Dagamac
- General Botany and Plant Systematics, Institute of Botany and Landscape Ecology, University of Greifswald, Greifswald, Germany.,Department of Biological Sciences and Research Center for the Natural and Applied Sciences, University of Santo Tomas, Manila, Philippines
| | - Yuka Yajima
- Muroran Institute of Technology, Muroran, Japan
| | - Martin Schnittler
- General Botany and Plant Systematics, Institute of Botany and Landscape Ecology, University of Greifswald, Greifswald, Germany
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Mori-Yoshimura M, Yajima Y, Kimura A, Segawa K, Oya Y, Mizuno K, Noguchi S, Nishino I, Takahashi Y. DISTAL MYOPATHIES. Neuromuscul Disord 2021. [DOI: 10.1016/j.nmd.2021.07.096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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7
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Cho J, Uejima T, Hayama H, Yajima Y, Yamashita Y. Phenotyping right heart function for prognosticating heart failure. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356.024] [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: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Right heart failure has been shown to portend poor prognosis. The pathophysiology of right heart function is complex, as right ventricular (RV) function is easily affected by preload and afterload.
Purpose
To test the hypothesis that machine learning would detect heterogeneity in right heart function and improve risk stratifications in a heart failure population
Methods
This study included 403 heart failure patients who had a history of hospitalization for decompensation. Patients were excluded if they had primary heart valve disease or pericardial disease or a previous cardiac surgery. Hierarchical clustering was undertaken on right heart variables (RV strain, right ventricular systolic pressure (RVSP), vena contracta of tricuspid regurgitation (TR) and diameter of inferior vena cava) to identify homogenous groups of patients with similar profiles of the variables. Cox hazard analysis was used to elucidate the benefit of clustering over each variable for prognosticating heart failure. Endpoint was hospitalization for worsening heart failure.
Results
Cluster analysis identified three groups with distinct right heart function. Cluster 1 (n = 191) represented patients with preserved RV function and low RVSP (figure A). On the other hand, cluster 2 (n = 144) had reduced RV function and low RVSP, while cluster 3 (n = 68) had preserved RV function and high RVSP, associated with severe TR and high central venous pressure. The latter 2 clusters carried worse outcome than cluster 1 (p < 0.001, figure B). Cox hazard analysis demonstrated that, although the addition of each right heart variable to baseline model constructed from left heart variables did not improve predictive power, clusters predicted events with a hazard ratio of 1.566, independent from and incremental to the left heart variables (Figure C).
Conclusion
Cluster analysis identified two distinct phenotypes of right heart failure that were associated with adverse outcomes. This data-driven phenotyping can help in categorizing right heart failure and better prognosticating heart failure.
Abstract Figure.
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Affiliation(s)
- J Cho
- Cardiovascular Institute, Tokyo, Japan
| | - T Uejima
- Cardiovascular Institute, Tokyo, Japan
| | - H Hayama
- National Center for Global Health and Medicine, Tokyo, Japan
| | - Y Yajima
- Cardiovascular Institute, Tokyo, Japan
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8
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Hiratsuka T, Arakawa Y, Yajima Y, Kakimoto Y, Shima K, Yamazaki Y, Ikegami M, Yamamoto T, Fujiwake H, Fujimoto K, Yamada N, Tsuruyama T. Hierarchical Cluster and Region of Interest Analyses Based on Mass Spectrometry Imaging of Human Brain Tumours. Sci Rep 2020; 10:5757. [PMID: 32238824 PMCID: PMC7113320 DOI: 10.1038/s41598-020-62176-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 03/06/2020] [Indexed: 12/31/2022] Open
Abstract
Imaging mass spectrometry (IMS) has been rarely used to examine specimens of human brain tumours. In the current study, high quality brain tumour samples were selected by tissue observation. Further, IMS analysis was combined with a new hierarchical cluster analysis (IMS-HCA) and region of interest analysis (IMS-ROI). IMS-HCA was successful in creating groups consisting of similar signal distribution images of glial fibrillary acidic protein (GFAP) and related multiple proteins in primary brain tumours. This clustering data suggested the relation of GFAP and these identified proteins in the brain tumorigenesis. Also, high levels of histone proteins, haemoglobin subunit α, tubulins, and GFAP were identified in a metastatic brain tumour using IMS-ROI. Our results show that IMS-HCA and IMS-ROI are promising techniques for identifying biomarkers using brain tumour samples.
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Affiliation(s)
- Takuya Hiratsuka
- Department of Drug and Discovery Medicine, Pathology Division, Kyoto University Graduate School of Medicine, Kyoto, 606-8501, Japan
| | - Yoshiki Arakawa
- Department of Neural Surgery, Kyoto University Hospital, Kyoto, 606-8507, Japan
| | - Yuka Yajima
- Department of Microbiology, Muroran Institute of Technology, Muroran, Hokkaido, 050-8585, Japan
| | - Yu Kakimoto
- Department of Forensic Medicine, Graduate School of Medicine, Tokai University School of Medicine, Isehara-Shimokasuya 143, Kanagawa, 259-1193, Japan
| | - Keisuke Shima
- Kyoto Applications Development Center, Analytical & Measuring Instruments Division, Shimadzu Corporation, 1 Nishino-kyo-Kuwabara-cho, Kyoto, 604-8511, Japan
| | - Yuzo Yamazaki
- Kyoto Applications Development Center, Analytical & Measuring Instruments Division, Shimadzu Corporation, 1 Nishino-kyo-Kuwabara-cho, Kyoto, 604-8511, Japan
| | - Masahiro Ikegami
- Kyoto Applications Development Center, Analytical & Measuring Instruments Division, Shimadzu Corporation, 1 Nishino-kyo-Kuwabara-cho, Kyoto, 604-8511, Japan
| | - Takushi Yamamoto
- Kyoto Applications Development Center, Analytical & Measuring Instruments Division, Shimadzu Corporation, 1 Nishino-kyo-Kuwabara-cho, Kyoto, 604-8511, Japan
| | - Hideshi Fujiwake
- Research Center, Shimadzu General Services, Inc., 1 Nishino-kyo-Kuwabara-cho, Kyoto, 604-8511, Japan
| | - Koichi Fujimoto
- Department of Neural Surgery, Kyoto University Hospital, Kyoto, 606-8507, Japan
| | - Norishige Yamada
- Clinical bioresource centre, Kyoto University Hospital, Kyoto, 606-8507, Japan
| | - Tatsuaki Tsuruyama
- Department of Drug and Discovery Medicine, Pathology Division, Kyoto University Graduate School of Medicine, Kyoto, 606-8501, Japan. .,Clinical bioresource centre, Kyoto University Hospital, Kyoto, 606-8507, Japan.
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9
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Reddy MV, Mawatari Y, Onodera R, Nakamura Y, Yajima Y, Chang YC. Bacterial conversion of waste into polyhydroxybutyrate (PHB): A new approach of bio-circular economy for treating waste and energy generation. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.biteb.2019.100246] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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10
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Yajima Y, Hoshino T, Kondo N, Chang YC. Fruiting body formation of the nivicolous myxomycete Badhamia alpina in moist chamber culture. MYCOSCIENCE 2018. [DOI: 10.1016/j.myc.2017.04.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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11
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Hoshino T, Tuno N, Degawa Y, Kasuya T, Yajima Y, Kawahara E, Nose I. The 10th International Symposium on Arctic and Alpine Mycology. MYCOSCIENCE 2018. [DOI: 10.1016/j.myc.2018.04.005] [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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12
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Yajima Y, Hiratsuka T, Kakimoto Y, Ogawa S, Shima K, Yamazaki Y, Yoshikawa K, Tamaki K, Tsuruyama T. Region of Interest analysis using mass spectrometry imaging of mitochondrial and sarcomeric proteins in acute cardiac infarction tissue. Sci Rep 2018; 8:7493. [PMID: 29748547 PMCID: PMC5945593 DOI: 10.1038/s41598-018-25817-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 04/30/2018] [Indexed: 12/25/2022] Open
Abstract
Matrix-assisted laser desorption ionization image mass spectrometry (MALDI-IMS) has been developed for the identification of peptides in various tissues. The MALDI-IMS signal distribution patterns and quantification of the signal intensities of the regions of interest (ROI) with healthy regions were compared for identification of the disease specific biomarkers. We performed a new ROI analysis using the conventional t-test and data number independent Cohen’s d-value analysis. Using these techniques, we analysed heart tissues after acute myocardial infarction (AMI). As a result, IMS signals of mitochondrial adenosine triphosphate synthase alpha subunit (ATP5A), myosin-6/7(MYH6/7), aortic actin, and the myosin light chain 3 (MYL3) were identified in the infarcted region. In particular, the signals of MYH7 are significantly greater in the infarcted region using ROI analysis. ROI analysis using MALDI-IMS may be a promising technique for the identification of biomarkers for pathological studies that involve the comparison of diseased and control areas.
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Affiliation(s)
- Yuka Yajima
- Department of Microbiology, Muroran Institute of Technology, Muroran, Hokkaido, 050-8585, Japan
| | - Takuya Hiratsuka
- Department of Drug and Discovery Medicine, Pathology Division, Kyoto University Graduate School of Medicine, Kyoto, 606-8501, Japan.
| | - Yu Kakimoto
- Department of Forensic Medicine, Graduate School of Medicine, Tokai University School of Medicine, Isehara-Shimokasuya 143, Kanagawa, 259-1193, Japan
| | - Shuichiro Ogawa
- Center for Anatomical, Pathological, and Forensic Medical Research, Kyoto University Graduate School of Medicine, Kyoto, 606-8501, Japan
| | - Keisuke Shima
- Kyoto Applications Development Center, Analytical & Measuring Instruments Division, Shimadzu Corporation, 1 Nishino-kyo-Kuwabara-cho, Kyoto, 604-8511, Japan
| | - Yuzo Yamazaki
- Kyoto Applications Development Center, Analytical & Measuring Instruments Division, Shimadzu Corporation, 1 Nishino-kyo-Kuwabara-cho, Kyoto, 604-8511, Japan
| | - Kenichi Yoshikawa
- Department of Life and Medical Sciences, Doshisha University, 1-3 Tatara Miyakodani, Kyotanabe-shi, Kyoto, 610-0394, Japan
| | - Keiji Tamaki
- Department of Forensic Medicine, Kyoto University Graduate School of Medicine, Kyoto, 606-8501, Japan
| | - Tatsuaki Tsuruyama
- Department of Drug and Discovery Medicine, Pathology Division, Kyoto University Graduate School of Medicine, Kyoto, 606-8501, Japan.
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13
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Abstract
We collected snow blight of moss, Polytrichum juniperinum on King George Island, maritime Antarctica. Host died in a circle of about 10-30 cm after snow melts. Clamp connected hyphae and no sclerotia were observed on tip of host leaves. DNA sequence of ITS region from moss symptoms were perfectly matched with fruit bodies of Typhula sp. on Macquarie Island in the maritime Antarctica and high homology with Typhula cf. subvariabilis from Iran. Therefore, we suggested that T. cf. subvariabilis caused snow blight on moss in Antarctica, and this is first record of Typhula snow blight in Southern Hemisphere. These results also suggested that fungi in same genera gained similar ecological niche in both Polar Regions.
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Affiliation(s)
- Yuka Yajima
- College of Environmental Technology, Muroran Institute of Technology, Muroran, Japan
| | - Motoaki Tojo
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Japan
| | - Bo Chen
- SOA Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai, China
| | - Tamotsu Hoshino
- Research Institute of Sustainable Chemistry, National Institute of Advanced Industrial Technology (AIST), Higashi-Hiroshima, Japan.,Graduate School of Advanced Sciences of Matter, Hiroshima University, Higashi-Hiroshima, Japan.,Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan
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14
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Yajima Y, Kawaguchi M, Yoshikawa M, Okubo M, Tsukagoshi E, Sato K, Katakura A. The effects of 2,3-dimercapto-1-propanesulfonic acid (DMPS) and meso-2,3-dimercaptosuccinic acid (DMSA) on the nephrotoxicity in the mouse during repeated cisplatin (CDDP) treatments. J Pharmacol Sci 2017. [PMID: 28648300 DOI: 10.1016/j.jphs.2017.05.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
Previously, we reported that specific lower dose of sodium 2,3-dimercapto-1-propanesulfonic acid (DMPS) which is an antidote to heavy metal intoxication, inversely enhanced cisplatin (CDDP)-induced antitumor activity to S-180 cell-bearing mouse. This activity was only weak with meso-2,3-dimercaptosuccinic acid (DMSA), however. This study investigated the effects of lower doses of DMPS or DMSA on the nephrotoxicity and kinetics of CDDP. Kidney and blood isolated from female mice which received CDDP with or without DMPS or DMSA once daily for 4 days were provided for measuring levels of blood urea nitrogen (BUN) and transporter proteins (OCT2: organic cation transporter; MATE1: multidrug and toxin extrusion) mRNA, and CDDP-originated platinum, and TUNEL staining of renal tubular cells. DMPS or DMSA reduced effectively CDDP-induced BUN, and caused a moderate reduction of platinum in kidney. Additionally, both dimercapto-compounds restored the CDDP-reduced mRNA levels of transporter proteins (OCT2 and MATE1), and apparently suppressed the CDDP-induced apoptosis. These results suggest that DMPS, as well as DMSA, at approximate 17-fold dose (μmol/kg) of CDDP, has an enough potential to reverse the CDDP nephrotoxicity, and concomitant use of DMPS considering both dose and timing for administration is potentially useful for preventing nephrotoxicity and enhancing antitumor activity during CDDP chemotherapy.
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Affiliation(s)
- Yuka Yajima
- Department of Oral Medicine, Oral and Maxillofacial Surgery, Tokyo Dental College, 5-11-13 Sugano, Ichikawa, Chiba 272-8513, Japan
| | - Mitsuru Kawaguchi
- Department of Pharmacology, Tokyo Dental College, 2-1-14 Misakicho, Chiyoda-ku, Tokyo 101-0061, Japan.
| | - Masanobu Yoshikawa
- Department of Clinical Pharmacology, School of Medicine, Tokai University, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan
| | - Migiwa Okubo
- Department of Pharmacology, Tokyo Dental College, 2-1-14 Misakicho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - Eri Tsukagoshi
- Department of Pharmacology, Tokyo Dental College, 2-1-14 Misakicho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - Kazumichi Sato
- Department of Oral Medicine, Oral and Maxillofacial Surgery, Tokyo Dental College, 5-11-13 Sugano, Ichikawa, Chiba 272-8513, Japan
| | - Akira Katakura
- Department of Oral Medicine, Oral and Maxillofacial Surgery, Tokyo Dental College, 5-11-13 Sugano, Ichikawa, Chiba 272-8513, Japan
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Venkateswar Reddy M, Mawatari Y, Onodera R, Nakamura Y, Yajima Y, Chang YC. Polyhydroxyalkanoates (PHA) production from synthetic waste using Pseudomonas pseudoflava: PHA synthase enzyme activity analysis from P. pseudoflava and P. palleronii. Bioresour Technol 2017; 234:99-105. [PMID: 28319778 DOI: 10.1016/j.biortech.2017.03.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [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: 12/31/2016] [Revised: 02/28/2017] [Accepted: 03/01/2017] [Indexed: 06/06/2023]
Abstract
Synthetic wastewater (SW) at various carbon concentrations (5-60g/l) were evaluated for polyhydroxyalkanoates (PHA) production using the bacteria Pseudomonas pseudoflava. Bacteria showed highest PHA production with 20g/l (57±5%), and highest carbon removal at 5g/l (74±6%) concentrations respectively. Structure, molecular weight, and thermal properties of the produced PHA were evaluated using various analytical techniques. Bacteria produced homo-polymer [poly-3-hydroxybutyrate (P3HB)] when only acetate was used as carbon source; and it produced co-polymer [poly-(3-hydroxybutyrate-co-3-hydroxyvalerate) P(3HB-co-3HV)] by addition of co-substrate propionate. PHA synthase, the enzyme which produce PHA was extracted from two bacterial strains i.e., P. pseudoflava and P. palleronii and its molecular weight was analysed using SDS-PAGE. Protein concentration, and PHA synthase enzyme activity of P. pseudoflava and P. palleronii was carried out using spectrophotometer. Results denoted that P. pseudoflava can be used for degradation of organic carbon persistent in wastewaters and their subsequent conversion into PHA.
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Affiliation(s)
- M Venkateswar Reddy
- Department of Applied Sciences, College of Environmental Technology, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido 050-8585, Japan
| | - Yasuteru Mawatari
- Research Center for Environmentally Friendly Materials Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran, Hokkaido 050-8585, Japan
| | - Rui Onodera
- Department of Applied Sciences, College of Environmental Technology, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido 050-8585, Japan
| | - Yuki Nakamura
- Department of Applied Sciences, College of Environmental Technology, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido 050-8585, Japan
| | - Yuka Yajima
- Department of Applied Sciences, College of Environmental Technology, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido 050-8585, Japan
| | - Young-Cheol Chang
- Department of Applied Sciences, College of Environmental Technology, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido 050-8585, Japan.
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Yajima Y, Oshima M, Iwai T, Kitajima H, Omura S, Tohnai I. Computational fluid dynamics study of the pharyngeal airway space before and after mandibular setback surgery in patients with mandibular prognathism. Int J Oral Maxillofac Surg 2017; 46:839-844. [PMID: 28412180 DOI: 10.1016/j.ijom.2017.03.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 01/21/2017] [Accepted: 03/21/2017] [Indexed: 10/19/2022]
Abstract
The purpose of this study was to investigate the relationship between the pressure drop in the pharyngeal airway space (ΔPPAS) and the minimum cross-sectional area (minCSA) of the pharyngeal airway before and after mandibular setback surgery using computational fluid dynamics, in order to prevent iatrogenic obstructive sleep apnoea. Eleven patients with mandibular prognathism underwent bilateral sagittal split osteotomy for mandibular setback. Three-dimensional models of the upper airway were reconstructed from preoperative and postoperative computed tomography images, and simulations were performed using computational fluid dynamics. ΔPPAS and the minCSA of the pharyngeal airway were calculated, and the relationship between them was evaluated by non-linear regression analysis. In all cases, the minCSA was found at the level of the velopharynx. After surgery, ΔPPAS increased significantly and the minCSA decreased significantly. The non-linear regression equation expressing the relationship between these variables was ΔPPAS=3.73×minCSA-2.06. When the minCSA was <1cm2, ΔPPAS increased greatly. The results of this study suggest that surgeons should consider bimaxillary orthognathic surgery rather than mandibular setback surgery to prevent the development of iatrogenic obstructive sleep apnoea when correcting a skeletal class III malocclusion.
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Affiliation(s)
- Y Yajima
- Department of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - M Oshima
- Institute of Industrial Science, The University of Tokyo, Tokyo, Japan
| | - T Iwai
- Department of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan.
| | - H Kitajima
- Department of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - S Omura
- Department of Oral and Maxillofacial Surgery/Orthodontics, Yokohama City University Medical Center, Yokohama, Kanagawa, Japan
| | - I Tohnai
- Department of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
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18
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Iwai T, Yajima Y, Honda K, Murata S, Omura S, Tohnai I. Computational fluid dynamic simulation of pharyngeal airway before and after mandibular setback surgery. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.1092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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19
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Iwai T, Kitajima H, Ohhara Y, Yajima Y, Mitsudo K, Tohnai I. Computational fluid dynamic simulation of intraarterial chemotherapy for tongue cancer. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Abstract
To determine the ’hard palate representing’ area in the primary somatosensory cortex, we recorded somatosensory-evoked magnetic fields from the cortex in ten healthy volunteers, using magnetoencephalography. Following electrical stimulation of 3 sites on the hard palate (the first and third transverse palatine ridges, and the greater palatine foramen), magnetic responses showed peak latencies of 15, 65, and 125 ms. Equivalent current dipoles for early magnetic responses were found along the posterior wall of the inferior part of the central sulcus. These dipoles were localized anterior-inferiorly, compared with locations for the hand area in the cortex. However, there were no significant differences in three-dimensional locations among the 3 selected regions for hard palate stimulation. These results demonstrated the precise location of palatal representation in the primary somatosensory cortex, the actual area being small.
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Affiliation(s)
- H Bessho
- Oral Health Science Center, Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Chiba, Japan.
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Venkateswar Reddy M, Mawatari Y, Yajima Y, Satoh K, Venkata Mohan S, Chang YC. Production of poly-3-hydroxybutyrate (P3HB) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) P(3HB-co-3HV) from synthetic wastewater using Hydrogenophaga palleronii. Bioresour Technol 2016; 215:155-162. [PMID: 26995321 DOI: 10.1016/j.biortech.2016.03.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 03/01/2016] [Accepted: 03/02/2016] [Indexed: 06/05/2023]
Abstract
In the present study, synthetic wastewater (SW) was used for production of poly-3-hydroxybutyrate (P3HB) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) P(3HB-co-3HV) using the bacteria Hydrogenophaga palleronii. SW at various volatile fatty acids concentrations (5-60g/l) was evaluated for the growth and biopolymer production using H. palleronii. Substrate degradation was analyzed using total organic carbon (TOC) analyzer and high pressure liquid chromatography (HPLC). H. palleronii showed highest and lowest removal of TOC at 5g/l (88±4%) and 60g/l (15±6%) respectively. Among all the concentrations evaluated, bacteria showed highest biopolymer production with 20g/l (63±5%), followed by 30g/l (58±3%) and 40g/l (56±2%). Lowest biopolymer production was observed at 5g/l concentration (21±3%). Structure, molecular weight, and thermal properties of the produced biopolymer were analyzed. These results denoted that the strain H. palleronii can be used for degradation of high concentration of volatile fatty acids persistent in wastewaters and their subsequent conversion into useable biopolymers.
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Affiliation(s)
- M Venkateswar Reddy
- Department of Applied Sciences, College of Environmental Technology, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido 050-8585, Japan
| | - Yasuteru Mawatari
- Research Center for Environmentally Friendly Materials Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran, Hokkaido 050-8585, Japan
| | - Yuka Yajima
- Department of Applied Sciences, College of Environmental Technology, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido 050-8585, Japan
| | - Kohki Satoh
- Department of Information and Electronic Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran, Hokkaido 050-8585, Japan
| | - S Venkata Mohan
- Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
| | - Young-Cheol Chang
- Department of Applied Sciences, College of Environmental Technology, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, Hokkaido 050-8585, Japan.
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Chang YC, Reddy MV, Umemoto H, Sato Y, Kang MH, Yajima Y, Kikuchi S. Bio-Augmentation of Cupriavidus sp. CY-1 into 2,4-D Contaminated Soil: Microbial Community Analysis by Culture Dependent and Independent Techniques. PLoS One 2015; 10:e0145057. [PMID: 26710231 PMCID: PMC4699198 DOI: 10.1371/journal.pone.0145057] [Citation(s) in RCA: 15] [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: 05/11/2015] [Accepted: 11/29/2015] [Indexed: 11/21/2022] Open
Abstract
In the present study, a 2,4-dichlorophenoxyacetic acid (2,4-D) degrading bacterial strain CY-1 was isolated from the forest soil. Based on physiological, biochemical and 16S rRNA gene sequence analysis it was identified as Cupriavidus sp. CY-1. Further 2,4-D degradation experiments at different concentrations (200 to 800 mg l-1) were carried out using CY-1. Effect of NaCl and KNO3 on 2,4-D degradation was also evaluated. Degradation of 2,4-D and the metabolites produced during degradation process were analyzed using high pressure liquid chromatography (HPLC) and GC-MS respectively. The amount of chloride ions produced during the 2,4-D degradation were analyzed by Ion chromatography (IC) and it is stoichiometric with 2,4-D dechlorination. Furthermore two different types of soils collected from two different sources were used for 2,4-D degradation studies. The isolated strain CY-1 was bio-augmented into 2,4-D contaminated soils to analyze its degradation ability. Culture independent methods like denaturing gradient gel electrophoresis (DGGE) and terminal restriction fragment length polymorphism (T-RFLP), and culture dependent methods like colony forming units (CFU) and most probable number (MPN) were used to analyze the survivability of strain CY-1 in contaminated soil. Results of T-RFLP were coincident with the DGGE analysis. From the DGGE, T-RFLP, MPN and HPLC results it was concluded that strain CY-1 effectively degraded 2,4-D without disturbing the ecosystem of soil indigenous microorganisms.
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Affiliation(s)
- Young-Cheol Chang
- Course of Chemical and Biological Engineering, Division of Sustainable and Environmental Engineering, College of Environmental Technology, Muroran Institute of Technology, 27–1 Mizumoto, Muroran, 050–8585, Japan
- * E-mail:
| | - M. Venkateswar Reddy
- Course of Chemical and Biological Engineering, Division of Sustainable and Environmental Engineering, College of Environmental Technology, Muroran Institute of Technology, 27–1 Mizumoto, Muroran, 050–8585, Japan
| | - Honoka Umemoto
- Course of Chemical and Biological Engineering, Division of Sustainable and Environmental Engineering, College of Environmental Technology, Muroran Institute of Technology, 27–1 Mizumoto, Muroran, 050–8585, Japan
| | - Yuki Sato
- Course of Chemical and Biological Engineering, Division of Sustainable and Environmental Engineering, College of Environmental Technology, Muroran Institute of Technology, 27–1 Mizumoto, Muroran, 050–8585, Japan
| | - Mi-Hye Kang
- Seoul Metropolitan Government Research Institute of Public Health and Environment, 202–3 Yangjae-dong, Seocho-gu, Seoul, 137–893, Republic of Korea
| | - Yuka Yajima
- Graduate School of Medicine, Kyoto University, Yoshidakonoe-cho, Sakyo-ku, Kyoto-shi, Kyoto, 606–8501, Japan
| | - Shintaro Kikuchi
- Course of Chemical and Biological Engineering, Division of Sustainable and Environmental Engineering, College of Environmental Technology, Muroran Institute of Technology, 27–1 Mizumoto, Muroran, 050–8585, Japan
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Venkateswar Reddy M, Mawatari Y, Yajima Y, Seki C, Hoshino T, Chang YC. Poly-3-hydroxybutyrate (PHB) production from alkylphenols, mono and poly-aromatic hydrocarbons using Bacillus sp. CYR1: A new strategy for wealth from waste. Bioresour Technol 2015; 192:711-717. [PMID: 26101960 DOI: 10.1016/j.biortech.2015.06.043] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 06/08/2015] [Accepted: 06/10/2015] [Indexed: 06/04/2023]
Abstract
In the present study five different types of alkylphenols, each of the two different types of mono and poly-aromatic hydrocarbons were selected for degradation, and conversion into poly-3-hydroxybutyrate (PHB) using the Bacillus sp. CYR1. Strain CYR1 showed growth with various toxic organic compounds. Degradation pattern of all the organic compounds at 100 mg/l concentration with or without addition of tween-80 were analyzed using high pressure liquid chromatography (HPLC). Strain CYR1 showed good removal of compounds in the presence of tween-80 within 3 days, but it took 6 days without addition of tween-80. Strain CYR1 showed highest PHB production with phenol (51 ± 5%), naphthalene (42 ± 4%), 4-chlorophenol (32 ± 3%) and 4-nonylphenol (29 ± 3%). The functional groups, structure, and thermal properties of the produced PHB were analyzed. These results denoted that the strain Bacillus sp. CYR1 can be used for conversion of different toxic compounds persistent in wastewaters into useable biological polyesters.
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Affiliation(s)
- M Venkateswar Reddy
- Department of Applied Sciences, College of Environmental Technology, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran 050-8585, Japan
| | - Yasuteru Mawatari
- Research Center for Environmentally Friendly Materials Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran, Hokkaido 050-8585, Japan
| | - Yuka Yajima
- Graduate School of Medicine, Kyoto University, Yoshidakonoe-cho, Sakyo-ku, Kyoto-shi, Kyoto 606-8501, Japan
| | - Chigusa Seki
- Department of Applied Sciences, College of Environmental Technology, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran 050-8585, Japan
| | - Tamotsu Hoshino
- Biomass Refinery Research Center, National Institute of Advanced Industrial, Sciences and Technology (AIST), 3-11-32 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan; Bioproduction Research Institute, National Institute of Advanced Industrial Sciences, and Technology (AIST), 2-17-2-1 Tsukisamu-Higashi, Toyohira-ku, Sapporo 062-8517, Japan
| | - Young-Cheol Chang
- Department of Applied Sciences, College of Environmental Technology, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran 050-8585, Japan.
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Murakami R, Yajima Y, Kida KI, Tokura K, Tojo M, Hoshino T. Surviving freezing in plant tissues by oomycetous snow molds. Cryobiology 2015; 70:208-10. [PMID: 25661659 DOI: 10.1016/j.cryobiol.2015.01.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 01/21/2015] [Accepted: 01/23/2015] [Indexed: 11/16/2022]
Abstract
Oomyceteous snow molds, Pythium species, were reported to be less tolerant to chilling and freezing temperatures than other snow mold taxa. However, Pythium species are often found to be pathogenic on mosses in Polar Regions. We investigated the frost resistance of Pythium species from Temperate (Hokkaido, Japan) and Subantarctic Regions. Free mycelia and hyphal swellings, structures for survival, of Pythium iwayamai and Pythium paddicum lost viability within freeze-thaw 3 cycles; however, mycelia in host plants survived the treatment. It was reported that fungi in permafrost are characterized both by the presence of natural cryoprotectants in these ecotopes and by the ability to utilize their inherent mechanisms of protection. It is conceivable that plant substrates or derivatives thereof are natural cryoprotectants, enabling them to provide advantageous conditions to microorganisms under freezing conditions. Our results are the first to experimentally support this hypothesis.
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Affiliation(s)
- Ryo Murakami
- Graduate School of Life Science, Hokkaido University, N10W8, Kita-ku, Sapporo 060-0810, Japan; Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1 Tsukisamu-Higashi, Toyohira-ku, Sapporo 062-8517, Japan
| | - Yuka Yajima
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1 Tsukisamu-Higashi, Toyohira-ku, Sapporo 062-8517, Japan
| | - Ken-ichi Kida
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai 599-8531, Japan
| | - Katsuyuki Tokura
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai 599-8531, Japan
| | - Motoaki Tojo
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai 599-8531, Japan
| | - Tamotsu Hoshino
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1 Tsukisamu-Higashi, Toyohira-ku, Sapporo 062-8517, Japan; Graduate School of Life Science, Hokkaido University, N10W8, Kita-ku, Sapporo 060-0810, Japan.
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Ishibashi S, Okamoto Y, Koyama C, Yajima Y, Noda A, Kawada, M. Enomoto K, Miyamoto M, Fujimoto A, Ishikawa Y. Two Cases of Mandibular Fractures in Child Treated by Open Reduction and Internal Fixation with a Titanium plate. J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.joms.2014.06.410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Yajima Y, Iwai T, Kitajima H, Ohara Y, Honda K, Shibutani N, Fujita K, Yamashita Y, Murata S, Omura S, Oshima M, Tohnai I. Evaluation of airway resistance and wall shear stress affected by mandibular setback surgery using computational fluid dynamics. J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.joms.2014.06.227] [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: 11/30/2022]
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Mitsunaga S, Iwai T, Kitajima H, Yajima Y, Ohya T, Hirota M, Mitsudo K, Aoki N, Yamashita Y, Omura S, Tohnai I. Cervicofacial subcutaneous emphysema associated with dental laser treatment. Aust Dent J 2014; 58:424-7. [PMID: 24320897 DOI: 10.1111/adj.12119] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2013] [Indexed: 11/28/2022]
Abstract
Cervicofacial subcutaneous emphysema is a rare complication of dental procedures. Although most cases of emphysema occur incidentally with the use of a high-speed air turbine handpiece, there have been some reports over the past decade of cases caused by dental laser treatment. Emphysema as a complication caused by the air cooling spray of a dental laser is not well known, even though dental lasers utilize compressed air just as air turbines and syringes do. In this study, we comprehensively reviewed cases of emphysema attributed to dental laser treatment that appeared in the literature between January 2001 and September 2012, and we included three such cases referred to us. Among 13 cases identified in total, nine had cervicofacial subcutaneous and mediastinal emphysema. Compared with past reviews, the incidence of mediastinal emphysema caused by dental laser treatment was higher than emphysema caused by dental procedure without dental laser use. Eight patients underwent CO2 laser treatment and two underwent Er:YAG laser treatment. Nine patients had emphysema following laser irradiation for soft tissue incision. Dentists and oral surgeons should be cognizant of the potential risk for iatrogenic emphysema caused by the air cooling spray during dental laser treatment and ensure proper usage of lasers.
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Affiliation(s)
- S Mitsunaga
- Department of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Kanazawa-ku, Yokohama, Japan
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Shigeki I, Yajima Y, Degawa Y, Hoshino T, Kondo N. Ultrastructure of cyst-like fungal bodies in myxomycete fruiting bodies. ACTA ACUST UNITED AC 2013. [DOI: 10.29203/ka.2013.458] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [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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Yajima Y, Miyazaki M, Okita N, Hoshino T. Production of Ginkgo Leaf−Shaped Basidiocarps of the Lingzhi or Reishi Medicinal Mushroom Ganoderma lucidum (Higher Basidiomycetes), Containing High Levels of α- and β-D-Glucan and Ganoderic Acid A. Int J Med Mushrooms 2013; 15:175-82. [DOI: 10.1615/intjmedmushr.v15.i2.60] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Zamri N, Masuda N, Oura F, Yajima Y, Nakada H, Fujita-Yamaguchi Y. Effects of two monoclonal antibodies, MLS128 against Tn-antigen and 1H7 against insulin-like growth factor-I receptor, on the growth of colon cancer cells. Biosci Trends 2012; 6:303-312. [PMID: 23337790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
MLS128 is an anti-carbohydrate monoclonal antibody (mAb) that binds three or two consecutive Tn-antigens. MLS128 bound 110-210 kDa glycoproteins (GPs) and inhibited the growth of LS180 and HT29 colon and MCF-7 breast cancer cells. One possible mechanism of MLS128's inhibition of growth may be via insulin-like growth factor-I receptor (IGF-IR) down-regulation (Morita et al. BioScience Trends. 2009; 3:32-37). The current study examined the role of IGF-IR signaling in the growth of colon cancer cells and its possible interaction with MLS128-induced inhibition of cell growth in LS180, LS174T, and HT29 human colon cancer cells treated with MLS128 or anti-IGF-IR 1H7. Both MLS128 and 1H7 treatment significantly inhibited the growth of colon cancer cells. All three colon cancer cell lines expressed IGF-IR. Their growth was in part IGF-I dependent, but inhibition by MLS128 was independent of IGF-IR signaling. All of the colon cancer cell lines expressed an 110kDa GP for MLS128 binding, but MCF-7 cells expressed MLS128-detectable bands with higher molecular masses. 1H7 treatments caused down-regulation of IGF-IR but did not affect 110kDa GP levels. MLS128 treatments resulted in partial disappearance of the 110kDa band but did not affect IGF-IR levels. Western blotting analyses of colon and breast cancer cell lysates revealed that colon and breast cancer cells differed significantly in patterns of expression of growth-related molecules while colon cancer cells were similar but distinctive. In conclusion, MLS128 inhibited the growth of colon cancer cells by binding to the 110kDa GP receptor. Inhibition of growth by MLS128 did not appear to affect IGF-IR signaling and instead only affected other growth signaling pathways.
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Affiliation(s)
- N Zamri
- Department of Applied Biochemistry, Tokai University School of Engineering, Hiratsuka, Kanagawa, Japan
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Yajima Y, Ishiki H, Kobayashi T, Tahara M, Suzuki S, Kobayashi S, Akimoto T, Zenda S. A Non-Randomized Comparison of Enteral Diet and Low Residue Diet in Head and Neck Cancer Patients During Concurrent Chemoradiotherapy. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32351-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Suzuki S, Yoshida M, Yajima Y, Kobayashi T, Kobayashi S, Enokida T, Ishiki H, Endo K, Izumi K, Tahara M. Improving Patient Adherence by using the Flowchart Type Leaflet. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)34160-0] [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: 11/27/2022] Open
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Yajima Y, Fujii S, Kobayashi T, Ishiki H, Hayashi R, Tahara M. Anti-Androgen Therapy for the Patients with Recurrent and/or Metastatic Salivary Duct Carcinoma Expressing Androgen Receptors: A Retrospective Study. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)33608-5] [Citation(s) in RCA: 7] [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: 12/01/2022] Open
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Shimamoto A, Fujii H, Tomita M, Yajima Y, Takao M, Shimpo H. 230 Pharmacological Preconditioning of Lung with Monophosphoryl Lipid A: A Role of MyD88-Independent Signaling Pathway. J Heart Lung Transplant 2012. [DOI: 10.1016/j.healun.2012.01.237] [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] Open
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Suzuki S, Tahara M, Kobayashi T, Yajima Y, Ishiki H, Sugiyama J, Endo K, Izumi K. Evaluation of a team-based clinical pharmacist in cancer chemotherapy. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e16535] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Katayama S, Moriya T, Tanaka S, Tanaka S, Yajima Y, Sone H, Iimuro S, Ohashi Y, Akanuma Y, Yamada N. Low transition rate from normo- and low microalbuminuria to proteinuria in Japanese type 2 diabetic individuals: the Japan Diabetes Complications Study (JDCS). Diabetologia 2011; 54:1025-31. [PMID: 21286682 PMCID: PMC3071947 DOI: 10.1007/s00125-010-2025-0] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Accepted: 11/30/2010] [Indexed: 01/13/2023]
Abstract
AIMS/HYPOTHESIS The aim of the study was to determine the transition rate and factors associated with the progression of normo- and low microalbuminuria to diabetic nephropathy (overt proteinuria). METHODS For 8 years we prospectively observed 1,558 Japanese patients with type 2 diabetes mellitus whose basal urinary albumin:creatinine ratio (UACR) had been measured as <17.0 mg/mmol at entry. The incidence of nephropathy (UACR >33.9 mg/mmol) was determined by measuring UACR twice a year. RESULTS Progression to nephropathy occurred in 74 patients. The annual transition rate was 0.67%, and was substantially higher for the low-microalbuminuric group than for the normoalbuminuric group (1.85% and 0.23%, respectively; hazard ratio for the low-microalbuminuric group 8.45, p < 0.01). The hazard ratio for an HbA(1c) of 7-9% or ≥9% was 2.72 (p < 0.01) or 5.81 (p < 0.01) relative to HbA(1c) <7.0%, respectively. In comparison with individuals with a systolic blood pressure (SBP) of <120 mmHg, the hazard ratios for patients with an SBP of 120-140 mmHg or ≥140 mmHg were 2.31 (p = 0.06) and 3.54 (p < 0.01), respectively. Smoking also affected progression to proteinuria (hazard ratio 1.99, p < 0.01). In contrast, 30.3% of the low-microalbuminuric group returned to normoalbuminuria (i.e. were in remission). CONCLUSIONS/INTERPRETATION These results suggest that if patients with type 2 diabetes mellitus are receiving treatment from diabetologists for hyperglycaemia and hypertension when they are in the early stages of nephropathy (i.e. normo- or low microalbuminuria), their rate of transition to proteinuria is considerably lowered, and that differentiating patients with low microalbuminuria from those with high microalbuminuria might be clinically useful. TRIAL REGISTRATION UMIN Clinical Trials Registry C000000222.
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Affiliation(s)
- S Katayama
- Department of Endocrinology and Diabetes, School of Medicine, Saitama Medical University, 38 Morohongo, Moroyama-cho, Iruma-gun, Saitama 350-0495, Japan.
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Shimamoto A, Yajima Y, Shomura S, Takao M, Shimpo H. 383: MyD88-Independent Signaling Pathway Is Involved with Lung Ischemic Preconditioning. J Heart Lung Transplant 2010. [DOI: 10.1016/j.healun.2009.11.397] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Yajima Y, Kondo N, Yamamoto Y. <i>Arcyria monticola</i> from Hokkaido, northern Japan: its habit, detailed morphology, and comparison with <i>Arcyria imperialis</i>. MYCOSCIENCE 2010. [DOI: 10.47371/mycosci.myc51242] [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: 04/03/2023]
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Shibata M, Yumiko N, Hirano T, Matsuo S, Abe H, Yajima Y. Efficacy of FOLFOX4 in patients with hypoalbuminemia or immune impairment. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e15141] [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
e15141 Background: The effects of chemotherapeutic agents are understood to be regulated by many factors including tumor factors such as sensitivity to drugs and host factors. Among these host factors, nutritional conditions and immune function of cancer-bearing host has been told to relate the effects of chemotherapy, however, it has not been clarified yet. Methods: We have analysed the relationships between the effects of FOLFOX4 and nutritional markers such as serum albumin concentrations and immunology markers including counts of lymphocytes and neutrophils, the ratios of these counts G/L: granulocytes/lymphocytes) and serum concentrations of immunosuppressive acidic protein (IAP) in the patients with disseminated colorectal cancer who have received FOLFOX4. All these blood examinations were performed before the first administration of FOLFOX4 as a first line chemotherapy in 18 patients with disseminated colorectal cancer. Results: Firstly serum albumin levels have shown significant correlation to lymphocyte counts and did inverse correlation to neutrophil counts and G/L ratios. The albumin levels in the patients with PD of FOLFOX outcome was significantly lower than in the patients with PR(p<0.05) and SD (p<0.05). The lymphocytes counts in the patients with PD were significantly lower than in those with PR (p<0.05) and SD (p<0.05). Neutrophil counts, on the other hand, was significantly higher in the patients with PD than in those with PR (p<0.01) and SD (p<0.05). IAP, have been recognized as a marker of immune-suppression in patients with cancer was higher in the patients with PD. Conclusions: Thus the nutritional status is closely related to the immune status in patients with cancer, and the markers of these conditions may present important informations in prediction of results of cancer chemotherapy. No significant financial relationships to disclose.
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Affiliation(s)
- M. Shibata
- Akiru Municipal Medical Center, Tokyo, Japan
| | - N. Yumiko
- Akiru Municipal Medical Center, Tokyo, Japan
| | - T. Hirano
- Akiru Municipal Medical Center, Tokyo, Japan
| | - S. Matsuo
- Akiru Municipal Medical Center, Tokyo, Japan
| | - H. Abe
- Akiru Municipal Medical Center, Tokyo, Japan
| | - Y. Yajima
- Akiru Municipal Medical Center, Tokyo, Japan
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Yajima Y, Sueki H, Oguro T, Yoshida T, Iijima M. Effects of oral administration of ciclosporin A on skin carcinogenesis: a study using the two-stage carcinogenesis protocol in mice. Clin Exp Dermatol 2008; 33:478-83. [PMID: 18498406 DOI: 10.1111/j.1365-2230.2008.02763.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND Development of malignant skin neoplasms in patients receiving cyclosporin A (CsA) has been reported. The relationship between the pathogenesis of skin carcinogenesis and the dose of CsA is still unclear. AIM To clarify the effect of oral administration of CsA, especially its dose, on skin carcinogenesis. METHODS Hr-1 hairless mice were assigned to the following four groups: (i) control group (n = 8), given vehicle intragastrically six times/week and acetone applied to the skin of the back; (ii) chemical-alone (n = 11), given vehicle intragastrically + application of 7,12-dimethylbenz[a]anthracene (DMBA) once week and 12-O-tetradecanoyl-phorbol-13-acetate (TPA) twice week to the back; (iii) CsA-alone group (n = 8), given CsA intragastrically (10 mg/kg) six times/week and vehicle applied to the back twice week; and (iv) CsA + chemical group (n = 8), given 10 mg/kg CsA intragastrically + topical DMBA and TPA. The number of papules > 3 mm in diameter that had developed on the back after 15 weeks was counted. The mean epidermal thickness and number of dermal infiltrates were determined. The same experiments were performed using CsA at doses of 5 and 20 mg/kg. RESULTS Oral administration of either 10 or 20 mg/kg CsA significantly enhanced the formation of papillomas by DMBA and TPA, but no enhancement was observed when 5 mg/kg CsA was administered. The mean epidermal thickness and number of dermal infiltrates were significantly greater in the CsA + chemical group than in the chemical-alone group. CONCLUSION These data suggest that oral administration of CsA in excess of a certain dose can accelerate tumour development in mice.
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Affiliation(s)
- Y Yajima
- Department of Dermatology, Showa University School of Medicine, Tokyo, Japan
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Narita M, Shimamura M, Imai S, Kubota C, Yajima Y, Takagi T, Shiokawa M, Inoue T, Suzuki M, Suzuki T. Role of interleukin-1beta and tumor necrosis factor-alpha-dependent expression of cyclooxygenase-2 mRNA in thermal hyperalgesia induced by chronic inflammation in mice. Neuroscience 2007; 152:477-86. [PMID: 18262365 DOI: 10.1016/j.neuroscience.2007.10.039] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2007] [Revised: 10/17/2007] [Accepted: 10/19/2007] [Indexed: 02/09/2023]
Abstract
The present study investigated whether the endogenous pro-inflammatory cytokines [interleukin (IL)-1beta and tumor necrosis factor-alpha (TNF-alpha)]-dependent expression of cyclooxygenase-2 (COX-2) mRNA within the spinal cord could be involved in the development of chronic inflammatory pain-like behaviors in mice. We demonstrated that the expression of COX-2 mRNA on the ipsilateral side of the spinal cord was significantly increased 6 h and 3 days after intraplantar injection of complete Freund's adjuvant (CFA), compared with the expression in saline-treated mice. In addition, the chronic pain-like behaviors following CFA injection were markedly suppressed by repeated intrathecal (i.t.) pre-treatment with the COX-2 inhibitor etodolac, but not with the COX-1 inhibitor mofezolac. The cytosolic level of the activated form of nuclear factor-kappa B (NF-kappaB), which is a major contributor to the induction of COX-2, on the ipsilateral side of the mouse spinal cord was also increased compared with that in the saline-treated mice. The key finding in the present study was that a single i.t. injection with either IL-1beta or TNF-alpha induced a marked increase in spinal COX-2 mRNA and persistent thermal hyperalgesia in mice. Furthermore, CFA-induced hypersensitivity to inflammatory pain was significantly reduced by repeated i.t. pre-injection of the recombinant Fc chimera of IL-1 receptor I or soluble TNF receptor I, which sequesters endogenous IL-1beta or TNF-alpha, respectively. In contrast, the expression of spinal COX-2 mRNA in CFA-treated mice was similar to that in saline-treated mice at 7 days after CFA injection. The present findings strongly indicate the early intrathecal use of the COX-2 inhibitor for the relief of chronic inflammatory pain. Furthermore, together with the result in a previous study that pro-inflammatory cytokines lead to stimulation of a NF-kappaB-dependent transcriptional pathway, these findings suggest that a spinal cytokine/NF-kappaB/COX-2 pathway may play an important role in the development, but not maintenance, of chronic pain following peripheral tissue inflammation.
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Affiliation(s)
- M Narita
- Department of Toxicology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan.
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Ro Y, Muramatsu T, Shima K, Yajima Y, Shibahara T, Noma H, Shimono M. Correlation between reduction of syndecan-1 expression and clinico-pathological parameters in squamous cell carcinoma of tongue. Int J Oral Maxillofac Surg 2006; 35:252-7. [PMID: 16280239 DOI: 10.1016/j.ijom.2005.06.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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: 11/12/2004] [Revised: 06/17/2005] [Accepted: 06/26/2005] [Indexed: 10/25/2022]
Abstract
We examined expression of syndecan-1 in squamous cell carcinoma (SCC) of tongue using immunohistochemistry. Forty-three cases of SCC arising in lateral border of tongue were investigated. From the immunohistochemical staining pattern, the cases were divided into two groups based on expression of syndecan-1 at the supra-peripheral cells of the tumor nest: Group A, completely or mainly positive; Group B, sporadically positive or negative. Most poorly differentiated SCC cases were classified into Group B (81.8%). The number of Group B cases in T1-2 was different from that in T3-4. The number of cases where syndecan-1 expression was reduced was much greater in T3-4, and represented the majority of Group B (86.7%). More than 80% of Grade 4D cases were in Group B (83.3%) based on the Yamamoto-Kohama criteria. These results indicate that reduction of syndecan-1 correlates to histological grade, tumor size and mode of invasion in tongue SCC.
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Affiliation(s)
- Y Ro
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, 1-2-2, Masago, Mihama-ku, Chiba 261-8502, Japan
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Narita M, Suzuki M, Narita M, Niikura K, Nakamura A, Miyatake M, Yajima Y, Suzuki T. mu-Opioid receptor internalization-dependent and -independent mechanisms of the development of tolerance to mu-opioid receptor agonists: Comparison between etorphine and morphine. Neuroscience 2006; 138:609-19. [PMID: 16417975 DOI: 10.1016/j.neuroscience.2005.11.046] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2005] [Revised: 11/10/2005] [Accepted: 11/19/2005] [Indexed: 12/30/2022]
Abstract
A growing body of evidences suggests that receptor desensitization is implicated in the development of tolerance to opioids, which is generally regulated by protein kinases and receptor trafficking proteins. In the present study, we demonstrated that repeated s.c. treatment with etorphine, but not morphine, produced a significant increase in protein levels of G protein-coupled receptor kinase 2, dynamin II, beta-arrestin 2 and phosphorylated-conventional protein kinase C in membranes of the mouse spinal cord, suggesting that the etorphine-induced mu-opioid receptor desensitization may result from G protein-coupled receptor kinase 2/dynaminII/beta-arrestin2-dependent phosphorylation of mu-opioid receptors. Unlike etorphine, morphine failed to change the levels of these trafficking proteins. Furthermore, we found that the level of glial fibrillary acidic protein in the mouse spinal cord was clearly increased by chronic in vivo and in vitro treatment with morphine, whereas no such effect was noted by etorphine. In the behavioral study, intraperitoneal pretreatment with the glial-modulating agent propentofylline suppressed the development of tolerance to morphine-induced antinociception. In addition, intrathecal injection of astrocytes and astrocyte-conditioned medium mixture, which were obtained from cultured astrocytes of the newborn mouse spinal cord, aggravated the development of tolerance to morphine. In contrast, these agents failed to affect the development of tolerance induced by etorphine. These findings provide direct evidence for the distinct mechanisms between etorphine and morphine on the development of tolerance to spinal antinociception. These findings raise the possibility that the increased astroglia response produced by chronic morphine could be associated with the lack of mu-opioid receptor internalization.
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Affiliation(s)
- M Narita
- Department of Toxicology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan.
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Isogai O, Tsukamoto K, Masubuchi Y, Tomioka S, Suzuki T, Kawato H, Yajima Y, Kasamaki Y, Ito S, Kanmatsuse K. High salt diet enhances cardiovascular responses from the nucleus tractus solitarius and ventrolateral medulla of Sprague-Dawley rats. Clin Exp Hypertens 2005; 27:33-44. [PMID: 15773228 DOI: 10.1081/ceh-200044252] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
High salt intake has been shown to augment the sensitivity of rostral ventrolateral medulla (RVLM) sympathoexcitatory neurons. We examined the effects of 4 weeks of high dietary salt (8%) on the sensitivity of nucleus tractus solitarius (NTS) and caudal ventrolateral medulla (CVLM) in controlling RVLM. In chloralose-anesthetized Sprague-Dawley rats, high salt intake did not elevate baseline arterial pressure or heart rate (HR). In high-salt group, NTS, CVLM, and RVLM responses to glutamate were greater. NTS responses to acetylcholine or serotonin, which is independent of baroreflex, also were greater. Phenylephrine or nitroprusside (i.v.) elicited similar changes in arterial pressure and heart rate, the baroreflex sensitivity also was similar in both groups of rats. These results suggest that high salt intake augments the sensitivity of NTS and CVLM sending inhibitory input to RVLM. This presumably may inhibit the RVLM, thereby inhibiting the elevation of arterial pressure.
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Affiliation(s)
- O Isogai
- Second Department of Internal Medicine, Nihon University School of Medicine, Tokyo, Japan
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Narita M, Matsumura Y, Ozaki S, Ise Y, Yajima Y, Suzuki T. Role of the calcium/calmodulin-dependent protein kinase ii (CaMKII) in the morphine-induced pharmacological effects in the mouse. Neuroscience 2004; 126:415-21. [PMID: 15207359 DOI: 10.1016/j.neuroscience.2004.03.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/06/2004] [Indexed: 11/20/2022]
Abstract
Calcium/calmodulin-dependent protein kinase II (CaMKII) is a family of multifunctional protein kinases that activates signaling pathways. The present study was designed to ascertain whether CaMKII could play a substantial role in the expression of morphine-induced antinociception, hyperlocomotion and rewarding effect in the mouse. An i.c.v. pretreatment with a CaMKII inhibitor KN-93 failed to affect the antinociception and hyperlocomotion induced by s.c. administration of a prototype micro-opioid receptor agonist morphine. In contrast, the morphine-induced place preference was significantly attenuated by i.c.v. pretreatment with KN-93. The levels of phosphorylated-CaMKII (p-CaMKII) in the limbic forebrain, but not in the frontal cortex and the lower midbrain, were significantly increased in morphine-conditioned mice, whereas the levels of CaMKII in three brain regions obtained from morphine-conditioned mice were not changed. This up-regulation of p-CaMKII in the limbic forebrain obtained from morphine-conditioned mice was significantly inhibited by i.c.v. pretreatment with KN-93. These results provide evidence that the increase in CaMKII activity in the mouse limbic forebrain may contribute to the rewarding effect, but not the antinociception and the hyperlocomotion, induced by morphine.
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Affiliation(s)
- M Narita
- Department of Toxicology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan.
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Yajima Y, Noma H, Furuya Y, Nomura T, Yamauchi T, Kasahara K, Hatada K, Takano M. Quantification of telomerase activity of regions unstained with iodine solution that surround oral squamous cell carcinoma. Oral Oncol 2004; 40:314-20. [PMID: 14747063 DOI: 10.1016/j.oraloncology.2003.08.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The aim of this study was to analyze the iodine-unstained region expanding around oral squamous cell carcinoma (SCC) by quantification of telomerase activity. The epithelial dysplasia often observed around SCC is considered to cause local recurrence or a second primary cancer. However these areas are hard to distinguish from normal mucosa. To clear the border of the expanding epithelial dysplasia around SCC, we stained with 3% iodine solution, and then decided the surgical margin. We measured quantification of telomerase activity in tumor, in epithelial dysplasia, and also in normal epithelium. Thirty-three primary cases of oral SCC which have iodine-unstained region around lesions were investigated. Fluorescense-based TRAP was applied to obtain quantification of telomerase activity. We obtained the following results: histological examination confirmed that every patient's unstained region consisted of various degrees of epithelial dysplasia. The quantified telomerase activities for squamous cell carcinoma, epithelial dysplasia and normal epithelium were 53.9, 39.6 and 2.7 U/microgP, respectively, and there was a significant difference between carcinoma and normal areas, and between dysplasia and normal epithelium. Therefore, these findings suggest that the areas of epithelial dysplasia unstained by iodine consist of cells that are nearly cancerous and excessively proliferative, and that epithelial dysplasia around SCC should be resected together with the tumor. Vital staining with iodine is useful for identifying epithelial dysplasia around SCC.
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Affiliation(s)
- Y Yajima
- The First Department of Oral and Maxillofacial Surgery, Tokyo Dental College 1-2-2 Masago, Mihama Ward, Chiba City 261-8502, Japan.
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Narita M, Imai S, Narita M, Kasukawa A, Yajima Y, Suzuki T. Increased level of neuronal phosphoinositide 3-kinase γ by the activation of μ-opioid receptor in the mouse periaqueductal gray matter: further evidence for the implication in morphine-induced antinociception. Neuroscience 2004; 124:515-21. [PMID: 14980723 DOI: 10.1016/j.neuroscience.2003.11.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/16/2003] [Indexed: 10/26/2022]
Abstract
It has been proposed that phosphoinositide 3-kinase (PI3K), one of the phosphatidylinositol kinases, can be regulated by G-protein-coupled receptor as well as nerve growth factor-associated receptors. The aim of the present study was to investigate whether in vivo treatment with morphine, a mu-opioid receptor (MOR) agonist, could directly regulate PI3Kgamma isoform in the mouse periaqueductal gray matter (PAG). Using the polyclonal antibody recognizing a p110gamma catalytic subunit of PI3Kgamma, PI3Kgamma-like immunoreactivity (IR) was mostly seen in the membrane of the cell labeled by anti-neuron-specific nuclear protein. A single s.c. injection of morphine caused a marked increase in the number of PI3Kgamma-IR expressing cells in the PAG. Double immunolabeling assay showed that MOR-IR was mostly overlapped with PI3Kgamma-IR on the cell surface in the PAG section. Additionally, phosphorylated-phospholipase Cgamma1 (PLCgamma1-IR) was highly detected in the membrane compartment of the increased PI3Kgamma-IR-positive cells of this region. Further pharmacological evidence for the critical role of PI3Kgamma in MOR-mediated antinociceptive response was provided by the warm-plate test. The dose-response lines for antinociceptive effects of morphine were significantly shifted to the right following i.c.v. treatment with PI3K inhibitors. These findings suggested that acute treatment with morphine may directly activate the PI3Kgamma/PLCgamma1 pathway in the PAG. This effect may, at least in part, result in the expression of morphine-induced pharmacological actions including antinociception in mice.
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Affiliation(s)
- M Narita
- Department of Toxicology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
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Narita M, Oe K, Kato H, Shibasaki M, Narita M, Yajima Y, Yamazaki M, Suzuki T. Implication of spinal protein kinase C in the suppression of morphine-induced rewarding effect under a neuropathic pain-like state in mice. Neuroscience 2004; 125:545-51. [PMID: 15099668 DOI: 10.1016/j.neuroscience.2004.02.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/09/2004] [Indexed: 10/26/2022]
Abstract
We previously demonstrated that spinal protein kinase C (PKC) is involved in the development of a neuropathic pain-like state induced by sciatic nerve ligation, and the morphine-induced rewarding effect is attenuated by sciatic nerve ligation in rodents. Here we first investigated whether sciatic nerve injury could change the activity of a conventional PKC (cPKC) and an atypical PKC isoform PKCzeta in the mouse spinal cord. The second experiment was to investigate whether direct inhibition of spinal PKC by intrathecal (i.t.) administration of a specific PKC inhibitor, 2-[8-[(dimethylamino)methyl]-6,7,8,9-tetrahydropyrido[1,2-a]indol-3-yl]-3-(1-methyl-1H-indole-3-yl)maleimide (RO-32-0432), could affect the rewarding effect induced by morphine following sciatic nerve ligation in mice. We found here that the activities of both cPKC and PKCzeta in the spinal cord were clearly increased following sciatic nerve ligation. Furthermore, i.t. administration of RO-32-0432 reversed a long-lasting pain-like syndrome as indicated by thermal hyperalgesia following sciatic nerve ligation in mice. These data provide direct evidence that activated cPKC and PKCzeta in the spinal cord may contribute to the development and maintenance of neuropathic pain. In the present study, we confirmed that the morphine-induced place preference was significantly suppressed by sciatic nerve ligation. It should be mentioned that i.t. pretreatment with RO-32-0432 significantly reversed the attenuation of morphine-induced rewarding effect following sciatic nerve ligation. These results suggest that activation of PKCs, including cPKC and PKCzeta, within the spinal cord is directly responsible for the attenuation of the morphine-induced rewarding effect under a neuropathic pain-like state following sciatic nerve ligation in mice.
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Affiliation(s)
- M Narita
- Department of Toxicology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan.
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Narita M, Aoki K, Takagi M, Yajima Y, Suzuki T. Implication of brain-derived neurotrophic factor in the release of dopamine and dopamine-related behaviors induced by methamphetamine. Neuroscience 2003; 119:767-75. [PMID: 12809697 DOI: 10.1016/s0306-4522(03)00099-x] [Citation(s) in RCA: 121] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
It is widely recognized that methamphetamine enhances the release of dopamine at dopaminergic neuron terminals of the mesolimbic system, which induces dopamine-related behaviors. Brain-derived neurotrophic factor (BDNF), a neurotrophin, binds to and activates its specific receptor tyrosine kinase, TrkB. BDNF has been shown to influence the release of dopamine in the mesolimbic dopamine system. The present study was designed to investigate roles of BDNF and TrkB in the expression of methamphetamine-induced dopamine release in the nucleus accumbens and dopamine-related behaviors induced by methamphetamine in rats. Methamphetamine (1 mg/kg, s.c.) produced a substantial increase in the extracellular levels of dopamine and induced a progressive augmentation of dopamine-related behaviors such as rearing and sniffing. In contrast, both the stimulation of dopamine release and induction of dopamine-related behaviors by methamphetamine were significantly suppressed by pretreatment with intra-nucleus accumbens injection of either BDNF (2.0 microl/rat, 1:1000, 1:300 and 1:100) or TrkB (2.0 microl/rat, 1:1000 and 1:100) antibody. Furthermore, the basal level of dopamine in the nucleus accumbens was not affected by treatment with both BDNF and TrkB antibodies. These findings provide further evidence that BDNF/TrkB pathway is implicated in the methamphetamine-induced release of dopamine and the induction of dopamine-related behaviors.
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Affiliation(s)
- M Narita
- Department of Toxicology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
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