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Nakagiri A, Hakotani A, Shino R, Miyazaki K, Endo N, Sotome K, Maekawa N. Taxonomic and life cycle reappraisals of the marine basidiomycete Nia vibrissa complex, with descriptions of three new Nia species. Mycologia 2024; 116:59-91. [PMID: 38109665 DOI: 10.1080/00275514.2023.2276028] [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: 06/15/2023] [Accepted: 10/24/2023] [Indexed: 12/20/2023]
Abstract
The marine basidiomycete Nia vibrissa has been regarded as a species complex, possibly including several species, because morphological variations in fruitbody, spore, and spore appendage have been observed in materials from worldwide collections. Using more than 50 monosporic isolates of N. vibrissa-like fungi mainly obtained from Japanese beach coasts, we investigated their molecular phylogeny, morphological characteristics, mating compatibility, nuclear behavior during spore formation, and life cycles. Molecular phylogenetic analyses separated the examined strains into seven clades. Each clade of fungi exhibited distinctive characteristics in fruitbodies and spores produced by culturing monokaryotic strains and mated dikaryotic strains; these characteristics included the color of fruitbodies, apical structure of peridial hair hyphae, spore shape, and apical structure of spore appendages. Mating tests of monokaryotic strains demonstrated mating compatibility between strains within a clade and incompatibility among clades. Therefore, each clade of fungi was phylogenetically, morphologically, and biologically recognized as a different Nia species. Observation of the type specimen of N. vibrissa revealed a tiny T-shaped apical structure of spore appendages-not mentioned in the original description-that is unique to the species. This finding, together with the original description, suggests that our studied strains include N. aff. vibrissa, whose morphology is mostly identical to N. vibrissa sensu stricto, and three new species. Thus, we describe three new Nia species and propose emendation of the descriptions of the genus Nia. Culture-based studies have demonstrated that Nia species have both sexual and asexual morphs that produce morphologically similar fruitbodies (basidiomata and conidiomata) and spores (basidiospores and conidia). Because it has both morphs forming appendaged waterborne basidiospores and conidia, Nia must be the most well-adapted marine basidiomycete, ensuring the continuation of new generations by two morphs, while distributing in and inhabiting numerous marine environments.
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Affiliation(s)
- A Nakagiri
- Fungus/Mushroom Resource and Research Center, Faculty of Agriculture, Tottori University, 4-101 Koyama-Minami, Tottori, 680-8553, Japan
| | - A Hakotani
- Graduate School of Sustainability Science, Department of Agricultural Sciences, Tottori University, 4-101 Koyama-Minami, Tottori, 680-8553, Japan
| | - R Shino
- The United Graduate School of Agricultural Sciences, Tottori University, 4-101 Koyama-Minami, Tottori, 680-8553, Japan
| | - K Miyazaki
- Graduate School of Sustainability Science, Department of Agricultural Sciences, Tottori University, 4-101 Koyama-Minami, Tottori, 680-8553, Japan
| | - N Endo
- Fungus/Mushroom Resource and Research Center, Faculty of Agriculture, Tottori University, 4-101 Koyama-Minami, Tottori, 680-8553, Japan
| | - K Sotome
- Fungus/Mushroom Resource and Research Center, Faculty of Agriculture, Tottori University, 4-101 Koyama-Minami, Tottori, 680-8553, Japan
| | - N Maekawa
- Fungus/Mushroom Resource and Research Center, Faculty of Agriculture, Tottori University, 4-101 Koyama-Minami, Tottori, 680-8553, Japan
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2
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Tanaka D, Ishihara J, Takahashi H, Kobayashi M, Miyazaki A, Kajiya S, Fujita R, Maekawa N, Yamazaki Y, Takaya A, Nakamura Y, Furuya M, Sekiguchi T, Shoji S. High-Efficiency Single-Cell Containment Microdevices Based on Fluid Control. Micromachines (Basel) 2023; 14:mi14051027. [PMID: 37241650 DOI: 10.3390/mi14051027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/05/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023]
Abstract
In this study, we developed a comb-shaped microfluidic device that can efficiently trap and culture a single cell (bacterium). Conventional culture devices have difficulty in trapping a single bacterium and often use a centrifuge to push the bacterium into the channel. The device developed in this study can store bacteria in almost all growth channels using the flowing fluid. In addition, chemical replacement can be performed in a few seconds, making this device suitable for culture experiments with resistant bacteria. The storage efficiency of microbeads that mimic bacteria was significantly improved from 0.2% to 84%. We used simulations to investigate the pressure loss in the growth channel. The pressure in the growth channel of the conventional device was more than 1400 PaG, whereas that of the new device was less than 400 PaG. Our microfluidic device was easily fabricated by a soft microelectromechanical systems method. The device was highly versatile and can be applied to various bacteria, such as Salmonella enterica serovar Typhimurium and Staphylococcus aureus.
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Affiliation(s)
- Daiki Tanaka
- Research Organization for Nano & Life Innovation, Waseda University, 513 Waseda Tsurumakicho, Shinjuku-ku, Tokyo 162-0041, Japan
| | - Junichi Ishihara
- Medical Mycology Research Center, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-0856, Japan
| | - Hiroki Takahashi
- Medical Mycology Research Center, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-0856, Japan
- Molecular Chirality Research Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
- Plant Molecular Science Center, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Masashi Kobayashi
- School of Fundamental Science and Engineering, Waseda University, 3-4-1 Okubo, Shin-juku-ku, Tokyo 169-8555, Japan
| | - Aya Miyazaki
- School of Fundamental Science and Engineering, Waseda University, 3-4-1 Okubo, Shin-juku-ku, Tokyo 169-8555, Japan
| | - Satsuki Kajiya
- School of Fundamental Science and Engineering, Waseda University, 3-4-1 Okubo, Shin-juku-ku, Tokyo 169-8555, Japan
| | - Risa Fujita
- Research Organization for Nano & Life Innovation, Waseda University, 513 Waseda Tsurumakicho, Shinjuku-ku, Tokyo 162-0041, Japan
| | - Naoki Maekawa
- Department of Natural Products Chemistry, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
| | - Yuriko Yamazaki
- Department of Dermatology, Osaka University Graduate School of Medicine, Osaka 565-0871, Japan
- Department of Dermatology, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
- Cutaneous Allergy and Host Defense, Immunology Frontier Research Center, Osaka University, Osaka 565-0871, Japan
| | - Akiko Takaya
- Medical Mycology Research Center, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-0856, Japan
- Plant Molecular Science Center, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
- Department of Natural Products Chemistry, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
| | - Yuumi Nakamura
- Department of Dermatology, Osaka University Graduate School of Medicine, Osaka 565-0871, Japan
- Cutaneous Allergy and Host Defense, Immunology Frontier Research Center, Osaka University, Osaka 565-0871, Japan
| | - Masahiro Furuya
- Graduate School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Tetsushi Sekiguchi
- Research Organization for Nano & Life Innovation, Waseda University, 513 Waseda Tsurumakicho, Shinjuku-ku, Tokyo 162-0041, Japan
| | - Shuichi Shoji
- School of Fundamental Science and Engineering, Waseda University, 3-4-1 Okubo, Shin-juku-ku, Tokyo 169-8555, Japan
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Hayashi K, Tanaka Y, Tsuda T, Nomura A, Fujino N, Furusho H, Sakai N, Iwata Y, Usui S, Sakata K, Kato T, Tada H, Kusayama T, Usuda K, Kawashiri MA, Passman RS, Wada T, Yamagishi M, Takamura M, Fujino N, Nohara A, Kawashiri MA, Hayashi K, Sakata K, Yoshimuta T, Konno T, Funada A, Tada H, Nakanishi C, Hodatsu A, Mori M, Tsuda T, Teramoto R, Nagata Y, Nomura A, Shimojima M, Yoshida S, Yoshida T, Hachiya S, Tamura Y, Kashihara Y, Kobayashi T, Shibayama J, Inaba S, Matsubara T, Yasuda T, Miwa K, Inoue M, Fujita T, Yakuta Y, Aburao T, Matsui T, Higashi K, Koga T, Hikishima K, Namura M, Horita Y, Ikeda M, Terai H, Gamou T, Tama N, Kimura R, Tsujimoto D, Nakahashi T, Ueda K, Ino H, Higashikata T, Kaneda T, Takata M, Yamamoto R, Yoshikawa T, Ohira M, Suematsu T, Tagawa S, Inoue T, Okada H, Kita Y, Fujita C, Ukawa N, Inoguchi Y, Ito Y, Araki T, Oe K, Minamoto M, Yokawa J, Tanaka Y, Mori K, Taguchi T, Kaku B, Katsuda S, Hirase H, Haraki T, Fujioka K, Terada K, Ichise T, Maekawa N, Higashi M, Okeie K, Kiyama M, Ota M, Todo Y, Aoyama T, Yamaguchi M, Noji Y, Mabuchi T, Yagi M, Niwa S, Takashima Y, Murai K, Nishikawa T, Mizuno S, Ohsato K, Misawa K, Kokado H, Michishita I, Iwaki T, Nozue T, Katoh H, Nakashima K, Ito S, Yamagishi M. Correction: Characterization of baseline clinical factors associated with incident worsening kidney function in patients with non-valvular atrial fibrillation: the Hokuriku-Plus AF Registry. Heart Vessels 2023; 38:412. [PMID: 36508013 DOI: 10.1007/s00380-022-02218-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Kenshi Hayashi
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.
| | - Yoshihiro Tanaka
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.,Center for Arrhythmia Research, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Toyonobu Tsuda
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Akihiro Nomura
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Noboru Fujino
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Hiroshi Furusho
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.,Department of Cardiology, Ishikawa Prefectural Central Hospital, 2-1, Kuratsuki-higashi, Kanazawa, Japan
| | - Norihiko Sakai
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa, Japan
| | - Yasunori Iwata
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa, Japan
| | - Soichiro Usui
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Kenji Sakata
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Takeshi Kato
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Hayato Tada
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Takashi Kusayama
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Keisuke Usuda
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Masa-Aki Kawashiri
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Rod S Passman
- Center for Arrhythmia Research, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Division of Cardiology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa, Japan
| | - Masakazu Yamagishi
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.,Osaka University of Human Sciences, Settsu, Osaka, Japan
| | - Masayuki Takamura
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
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Arai S, Furukawa N, Takahama M, Kodai S, Ishii N, Nakagawa H, Yamasaki T, Kusutani N, Maekawa N, Fukai K. Extracutaneous neutrophilic infiltration of the spleen and lung associated with pyoderma gangrenosum of the skin. Clin Exp Dermatol 2021; 47:775-778. [PMID: 34905234 DOI: 10.1111/ced.15065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 12/09/2021] [Accepted: 12/13/2021] [Indexed: 11/27/2022]
Affiliation(s)
| | - Nao Furukawa
- General Thoracic Surgery.,Department of General Thoracic Surgery, Bell Land General Hospital
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5
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Kusutani N, Arai S, Imanishi A, Maekawa N, Fukai K. A giant variant of acquired reactive perforating collagenosis. Int J Dermatol 2021; 61:e250-e252. [PMID: 34302354 DOI: 10.1111/ijd.15797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 06/25/2021] [Accepted: 06/30/2021] [Indexed: 12/01/2022]
Affiliation(s)
- Nao Kusutani
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - Sakurako Arai
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - Akiko Imanishi
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - Naoki Maekawa
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - Kazuyoshi Fukai
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
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Sajiki Y, Konnai S, Ikenaka Y, Okagawa T, Maekawa N, Logullo C, da Silva Vaz I, Murata S, Ohashi K. Prostaglandin-related immune suppression in cattle. Vet Immunol Immunopathol 2021; 236:110238. [PMID: 33857743 DOI: 10.1016/j.vetimm.2021.110238] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/08/2021] [Accepted: 04/02/2021] [Indexed: 12/31/2022]
Abstract
Prostaglandins (PGs) are lipid mediators derived from arachidonic acid by several enzymes including cyclooxygenase (COX)-1 and COX-2. We have previously shown that PGE2 regulates immune responses, such as Th1 cytokine production and T-cell proliferation, in cattle. However, it is still unclear whether other PGs are involved in the regulation of immune responses in cattle. Here, immunosuppressive profiles of PGs (PGA1, PGB2, PGD2, PGE2, PGF1α and PGF2α) were firstly examined using bovine peripheral blood mononuclear cells (PBMCs). In addition to PGE2, PGA1 significantly inhibited Th1 cytokine production from PBMCs in cattle. Further analyses focusing on PGA1 revealed that treatment with PGA1 in the presence of concanavalin A (con A) downregulated CD69, an activation marker, and IFN-γ expression in both CD4+ and CD8+ T cells. Sorted CD3+ T cells stimulated with con A were cultivated with PGA1, and IFN-γ and TNF-α concentrations decreased upon PGA1 treatment. Taken together, these results suggest that the treatment with PGA1in vitro inhibits T-cell activation, especially Th1 cytokine production, in cattle.
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Affiliation(s)
- Y Sajiki
- Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan
| | - S Konnai
- Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan; Department of Advanced Pharmaceutics, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan.
| | - Y Ikenaka
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan; Translational Research Unit, Veterinary Teaching Hospital, Faculty of Veterinary Medicine, Hokkaido University, Kita-18 Nishi-9, Kita-ku, Sapporo, 060-0818, Japan; Water Research Group, Unit for Environmental Sciences and Management, North-West University, Potchefstroom, South Africa
| | - T Okagawa
- Department of Advanced Pharmaceutics, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan
| | - N Maekawa
- Department of Advanced Pharmaceutics, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan
| | - C Logullo
- Laboratório Integrado de Bioquímica Hatisaburo Masuda and Laboratório Integrado de Morfologia, NUPEM-UFRJ, Macaé, RJ, Brazil
| | - I da Silva Vaz
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, 91501-970, RS, Brazil
| | - S Murata
- Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan; Department of Advanced Pharmaceutics, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan
| | - K Ohashi
- Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan; Department of Advanced Pharmaceutics, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan
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7
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Kusutani N, Nishida M, Sowa-Osako J, Maekawa N, Fukai K. Acute generalized exanthematous pustulosis induced by pseudoephedrine in a combination tablet with fexofenadine. Int J Dermatol 2021; 60:e286-e288. [PMID: 33559159 DOI: 10.1111/ijd.15431] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 12/31/2020] [Accepted: 01/11/2021] [Indexed: 12/01/2022]
Affiliation(s)
- Nao Kusutani
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - Marina Nishida
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - Junko Sowa-Osako
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Naoki Maekawa
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - Kazuyoshi Fukai
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
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Izawa K, Shirakura K, Kakiuchi K, Funahashi N, Maekawa N, Hino N, Tanaka T, Doi T, Okada Y. PRC2 Components Maintain DNA Hypermethylation of the Upstream Promoter and Regulate Robo4 Expression in Endothelial Cells. Biol Pharm Bull 2020; 43:742-746. [DOI: 10.1248/bpb.b19-01014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Kohei Izawa
- Graduate School of Pharmaceutical Sciences, Osaka University
| | | | - Koji Kakiuchi
- Graduate School of Pharmaceutical Sciences, Osaka University
| | | | - Naoki Maekawa
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Nobumasa Hino
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Toru Tanaka
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Takefumi Doi
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Yoshiaki Okada
- Graduate School of Pharmaceutical Sciences, Osaka University
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9
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Nishida M, Takeichi T, Kono M, Imanishi A, Maekawa N, Akiyama M, Fukai K. Successful secukinumab treatment of recalcitrant juvenile generalized pustular psoriasis. J Dermatol 2020; 47:e77-e78. [PMID: 31907962 DOI: 10.1111/1346-8138.15228] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Marina Nishida
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - Takuya Takeichi
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Michihiro Kono
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Akiko Imanishi
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - Naoki Maekawa
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - Masashi Akiyama
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kazuyoshi Fukai
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
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10
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Furumura Y, Nishida M, Imanishi A, Maekawa N, Fukai K. Infectious endocarditis with multiple cerebral infarctions in a patient with severe atopic dermatitis. J Dermatol 2019; 46:e353-e354. [PMID: 31090225 DOI: 10.1111/1346-8138.14924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yosuke Furumura
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - Marina Nishida
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - Akiko Imanishi
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - Naoki Maekawa
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - Kazuyoshi Fukai
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
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11
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Nishiyama C, Tateishi C, Hashimoto T, Nishida M, Imanishi A, Shiratori T, Maekawa N, Tsuruta D, Fukai K. Exacerbation of well-controlled bullous pemphigoid by the administration of a dipeptidyl peptidase-4 inhibitor. Clin Exp Dermatol 2019; 44:830-832. [PMID: 30859617 DOI: 10.1111/ced.13962] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/06/2019] [Indexed: 12/21/2022]
Affiliation(s)
- C Nishiyama
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - C Tateishi
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - T Hashimoto
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - M Nishida
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - A Imanishi
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - T Shiratori
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - N Maekawa
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - D Tsuruta
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - K Fukai
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
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12
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Shiratori T, Takeichi T, Kono M, Nishida M, Imanishi A, Maekawa N, Kawamura N, Fukai K. A case of pustular psoriasis possibly precipitated by periodic oestrogen/gestagen therapy for Turner syndrome. Clin Exp Dermatol 2019; 44:e240-e241. [PMID: 30963610 DOI: 10.1111/ced.13979] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2010] [Indexed: 11/29/2022]
Affiliation(s)
- T Shiratori
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - T Takeichi
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Kono
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Nishida
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - A Imanishi
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - N Maekawa
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
| | - N Kawamura
- Department of Gynecology, Osaka City General Hospital, Osaka, Japan
| | - K Fukai
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
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13
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Tanaka T, Izawa K, Maniwa Y, Okamura M, Okada A, Yamaguchi T, Shirakura K, Maekawa N, Matsui H, Ishimoto K, Hino N, Nakagawa O, Aird WC, Mizuguchi H, Kawabata K, Doi T, Okada Y. ETV2-TET1/TET2 Complexes Induce Endothelial Cell-Specific Robo4 Expression via Promoter Demethylation. Sci Rep 2018; 8:5653. [PMID: 29618782 PMCID: PMC5884809 DOI: 10.1038/s41598-018-23937-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [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: 10/18/2017] [Accepted: 03/23/2018] [Indexed: 01/18/2023] Open
Abstract
Although transcription factors regulating endothelial cell (EC)-specific gene expression have been identified, it is not known how those factors induce EC-specificity. We previously reported that DNA hypomethylation of the proximal promoter elicits EC-specific expression of Roundabout4 (Robo4). However, the mechanisms establishing EC-specific hypomethylation of the Robo4 promoter remain unknown. In this study, we demonstrated that the hypermethylated Robo4 proximal promoter is demethylated as human iPS cells differentiate into endothelial cells. Reporter assays demonstrated that ETV2, an ETS family transcription factor, bound to ETS motifs in the proximal promoter and activated Robo4 expression. Immunoprecipitation demonstrated direct interaction between ETV2 and methylcytosine-converting enzymes TET1 and TET2. Adenoviral expression of ETV2-TET1/TET2 complexes demethylated the Robo4 promoter and induced Robo4 expression in non-ECs. In summary, we propose a novel regulatory model of EC-specific gene expression via promoter demethylation induced by ETV2-TET1/TET2 complexes during endothelial differentiation.
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Affiliation(s)
- Toru Tanaka
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita City, Osaka, 565-0871, Japan
| | - Kohei Izawa
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita City, Osaka, 565-0871, Japan
| | - Yusuke Maniwa
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita City, Osaka, 565-0871, Japan
| | - Maki Okamura
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita City, Osaka, 565-0871, Japan
| | - Atsumasa Okada
- Laboratory of Stem Cell Regulation, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki City, Osaka, 567-0085, Japan
| | - Tomoko Yamaguchi
- Laboratory of Stem Cell Regulation, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki City, Osaka, 567-0085, Japan
| | - Keisuke Shirakura
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita City, Osaka, 565-0871, Japan
| | - Naoki Maekawa
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita City, Osaka, 565-0871, Japan
| | - Hayato Matsui
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita City, Osaka, 565-0871, Japan
| | - Kenji Ishimoto
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita City, Osaka, 565-0871, Japan
| | - Nobumasa Hino
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita City, Osaka, 565-0871, Japan
| | - Osamu Nakagawa
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita City, Osaka, 565-8565, Japan
| | - William C Aird
- Center for Vascular Biology Research and Division of Molecular and Vascular Medicine, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA
| | - Hiroyuki Mizuguchi
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita City, Osaka, 565-0871, Japan
| | - Kenji Kawabata
- Laboratory of Stem Cell Regulation, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki City, Osaka, 567-0085, Japan
| | - Takefumi Doi
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita City, Osaka, 565-0871, Japan
| | - Yoshiaki Okada
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita City, Osaka, 565-0871, Japan.
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Tanaka T, Maekawa N, Kashio T, Izawa K, Ishiba R, Shirakura K, Ishimoto K, Hino N, Aird WC, Doi T, Okada Y. Tumor Necrosis Factor α Induces the Expression of the Endothelial Cell-Specific Receptor Roundabout4 through the Nuclear Factor-κB Pathway. Biol Pharm Bull 2017; 40:504-509. [DOI: 10.1248/bpb.b16-00938] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Toru Tanaka
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Naoki Maekawa
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Taito Kashio
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Kohei Izawa
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Ryosuke Ishiba
- Graduate School of Pharmaceutical Sciences, Osaka University
| | | | - Kenji Ishimoto
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Nobumasa Hino
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - William C. Aird
- Center for Vascular Biology Research and Division of Molecular and Vascular Medicine, Beth Israel Deaconess Medical Center
| | - Takefumi Doi
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Yoshiaki Okada
- Graduate School of Pharmaceutical Sciences, Osaka University
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Orihara T, Lebel T, Ge ZW, Smith M, Maekawa N. Evolutionary history of the sequestrate genus Rossbeevera ( Boletaceae) reveals a new genus Turmalinea and highlights the utility of ITS minisatellite-like insertions for molecular identification. Persoonia 2016; 37:173-198. [PMID: 28232764 PMCID: PMC5315287 DOI: 10.3767/003158516x691212] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Accepted: 12/02/2015] [Indexed: 11/25/2022]
Abstract
The sequestrate (truffle-like) basidiomycete genera Rossbeevera, Chamonixia, and Octaviania are closely related to the epigeous mushroom genera Leccinum and Leccinellum. In order to elucidate the properties and placement of several undescribed sequestrate taxa in the group and to reveal the evolutionary history of Rossbeevera and its allies, we conducted phylogenetic analyses based on three nuclear (ITS, nLSU, EF-1α) and two mitochondrial DNA loci (ATP6 and mtSSU) as well as precise morphological observations. Phylogenetic analyses of three nuclear loci suggest a complex evolutionary history with sequestrate fruiting bodies present in several clades, including a previously unrecognized sister clade to Rossbeevera. Here we propose a new sequestrate genus, Turmalinea, with four new species and one new subspecies as well as two new species of Rossbeevera. The three-locus nuclear phylogeny resolves species-level divergence within the Rossbeevera-Turmalinea lineage, whereas a separate phylogeny based on two mitochondrial genes corresponds to geographic distance within each species-level lineage and suggests incomplete lineage sorting (ILS) and gene introgression within several intraspecific lineages of Rossbeevera. Furthermore, topological incongruence among the three nuclear single-locus phylogenies suggests that ancient speciation within Rossbeevera probably involved considerable ILS. We also found an unusually long, minisatellite-like insertion within the ITS2 in all Rossbeevera and Turmalinea species. A barcode gap analysis demonstrates that the insertion is more informative for discrimination at various taxonomic levels than the rest of the ITS region and could therefore serve as a unique molecular barcode for these genera.
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Affiliation(s)
- T. Orihara
- Kanagawa Prefectural Museum of Natural History, 499 Iryuda, Odawara-shi, Kanagawa 250-0031, Japan
| | - T. Lebel
- National Herbarium of Victoria, Royal Botanic Gardens Melbourne, Private Bag 2000, Birdwood Ave, South Yarra, Vic., 3141, Australia
| | - Z.-W. Ge
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - M.E. Smith
- Department of Plant Pathology, University of Florida, Gainesville FL 32611-0680, USA
| | - N. Maekawa
- Fungus/Mushroom Resource and Research Center, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
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Kuniyuki S, Maekawa N. Ectopic extramammary Paget's disease on the head: case report and literature review. Int J Dermatol 2015; 54:e483-6. [DOI: 10.1111/ijd.13018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 12/30/2014] [Accepted: 02/28/2015] [Indexed: 11/26/2022]
Affiliation(s)
- Shuichi Kuniyuki
- Department of Dermatology; Osaka City General Hospital; Osaka Japan
| | - Naoki Maekawa
- Department of Dermatology; Osaka City General Hospital; Osaka Japan
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17
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Namaki S, Maekawa N, Iwata J, Namaki M, Yonehara Y. Correlation between hyoid bone position, width of pharynx and swallowing function before-after orthognathic surgery for mandibular deficiency. J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.joms.2014.06.221] [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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Abstract
Forty-nine children aged 0.2-13 years with bullous and eroded lesions, from which Staphylococcus aureus was isolated, were diagnosed with impetigo and entered into a randomized, open-labeled trial of topical oxytetracycline hydrochloride (tetracycline) compared with a combination of topical tetracycline and oral antibiotics. After one week of topical tetracycline treatment, 22 of the 28 patients were clinically cured, and the remaining six patients had improved. In the other treatment group, 14 patients of 21 were clinically cured and 7 patients improved by the combination of topical tetracycline and oral antibiotics. There were no significant differences between the two groups. Therefore, the present study suggests that topical tetracycline treatment is effective for the treatment of impetigo.
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Affiliation(s)
- Shuichi Kuniyuki
- Department of Dermatology, Osaka City General Hospital, Osaka, Japan
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Namaki S, Maekawa N, Iwata J, Sawada K, Namaki M, Bjornland T, Yonehara Y. Long-term evaluation of swallowing function before and after sagittal split ramus osteotomy. Int J Oral Maxillofac Surg 2014; 43:856-61. [PMID: 24679852 DOI: 10.1016/j.ijom.2014.03.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2013] [Revised: 01/30/2014] [Accepted: 03/03/2014] [Indexed: 11/25/2022]
Abstract
The aim of this study was to determine whether mandibular setback by sagittal split ramus osteotomy (SSRO) influences swallowing function. The subjects were 14 patients with skeletal class III malocclusions who underwent setback surgery by SSRO. Morphological changes were studied on cephalograms, and swallowing function was evaluated by videofluorography before the operation (T0) and at 7-10 days (T1), 3 months (T2), and 6 months (T3) after surgery. The angle between nasion, sella, and hyoid bone (HSN) and the sella-hyoid distance had increased significantly at T1. The hyoid bone returned to the preoperative position at T2. There were no significant changes in the oropharyngeal space at any time. On videofluorographic assessment, lingual movement, soft palate movement, and epiglottic movement had decreased at T1, but all patients recovered at T2. The oral transit time was significantly longer at T1 than at T0. Our results confirm that SSRO influences swallowing function. Swallowing function appears to stabilize by 3 months after surgery.
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Affiliation(s)
- S Namaki
- Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry, Tokyo, Japan.
| | - N Maekawa
- Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry, Tokyo, Japan
| | - J Iwata
- Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry, Tokyo, Japan
| | - K Sawada
- Department of Oral and Maxillofacial Radiology, Nihon University School of Dentistry, Tokyo, Japan
| | - M Namaki
- Department of Oral and Maxillofacial Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - T Bjornland
- Department of Oral Surgery and Oral Medicine, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - Y Yonehara
- Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry, Tokyo, Japan
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Yamanaka K, Kuniyuki S, Maekawa N, Yoshida Y, Teshima H. Pyoderma gangrenosum with myelodysplastic syndrome treated with analogous bone marrow transplantation. Acta Derm Venereol 2009; 89:105-6. [PMID: 19197560 DOI: 10.2340/00015555-0577] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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22
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Kuniyuki S, Fukushima Y, Yoshida Y, Yamanaka K, Maekawa N, Inoue T. Ciliated cyst of the vulva: oestrogen and progesterone receptors. Acta Derm Venereol 2008; 88:514-5. [PMID: 18779897 DOI: 10.2340/00015555-0481] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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23
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Iwanaga Y, Ueno M, Ueki M, Huang CL, Tomita S, Okamoto Y, Ogawa T, Ueda N, Maekawa N, Sakamoto H. The expression of osteopontin is increased in vessels with blood-brain barrier impairment. Neuropathol Appl Neurobiol 2007; 34:145-54. [PMID: 17973907 DOI: 10.1111/j.1365-2990.2007.00877.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
AIMS We previously reported that the blood-brain barrier (BBB) function was deteriorated in vessels located along hippocampal fissures in stroke-prone spontaneously hypertensive rats (SHRSP). In this study, we examined changes of gene expression in the BBB-damaged vessels of SHRSP. METHODS Vascular samples were microdissected from the hippocampi of SHRSP and Wistar-Kyoto (WKY) as a control and the difference in gene expression between the BBB-damaged vessels in SHRSP and vessels without BBB damage in WKY was examined by a microarray. The differences in gene and protein expression between brain tissues in the two strains of rats were examined using real-time quantitative reverse transcriptase-polymerase chain reaction (RT-PCR), Western blotting and immunohistochemistry. RESULTS The microarray assay revealed that the ratio of osteopontin gene expression in the vascular tissue of the hippocampi of SHRSP to that of WKY was the highest among 8435 genes. Real-time RT-PCR analysis revealed that the gene expression of osteopontin was significantly increased in the hippocampal samples of SHRSP compared with that in the hippocampal samples of WKY rats or with that in the cortical samples of SHRSP. Immunohistochemical and Western blot analyses showed that the osteopontin protein expression was seen in perivascular ED1-positive macrophages/microglial cells located around hippocampal fissures and significantly increased in the hippocampi of SHRSP compared with that of WKY. CONCLUSIONS These findings indicate that the expression of osteopontin is increased in BBB-damaged vessels in hypertensive SHRSP compared with that in vessels without BBB impairment in WKY rats, suggesting a role for osteopontin in BBB function.
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Affiliation(s)
- Y Iwanaga
- Department of Anaesthesiology and Emergency Medicine, Faculty of Medicine, Kagawa University, Kagawa, Japan
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Kim SG, Maekawa N, Matsuzaki A, Sakurai K, Yoshikawa T. Lepton flavor violation in a supersymmetric grand unified theory model with nonuniversal sfermion masses. Int J Clin Exp Med 2007. [DOI: 10.1103/physrevd.75.115008] [Citation(s) in RCA: 9] [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: 11/07/2022]
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Takatsu H, Wada H, Maekawa N, Takemura M, Saito K, Fujiwara H. Significant reduction of 125 I-meta-iodobenzylguanidine accumulation directly caused by 1-methyl-4-phenyl-1,2,3,6-tetrahydroxypyridine, a toxic agent for inducing experimental Parkinson's disease. Nucl Med Commun 2002; 23:161-6. [PMID: 11891470 DOI: 10.1097/00006231-200202000-00008] [Citation(s) in RCA: 9] [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: 11/25/2022]
Abstract
A significant reduction of cardiac 123I-meta-iodobenzylguanidine (MIBG) accumulation has been reported in patients with idiopathic Parkinson's disease. However, it is unclear whether this reduction in cardiac sympathetic nerve is caused primarily or secondarily to the degeneration of sympathetic nerve centres which occurs in Parkinson's disease. Therefore, we examined neuronal 125I-MIBG accumulation in mice hearts of an experimental Parkinson's disease model and in sympathetic cells without any neuronal innervation. Cardiac accumulation of 125I-MIBG was determined 4h after intravenous injection of 125I-MIBG in mice pretreated with 1-methyl-4-phenyl-1,2,3,6-tetrahydroxypyridine (MPTP), an inducer of Parkinson's disease. In an in vitro study, uptake of 125I-MIBG was determined in a cultured pheochromocytoma cell line (PC-12), which was pretreated with MPTP. MPTP reduced MIBG accumulation mainly in its neuronal component of mice hearts, suggesting that MPTP impairs cardiac sympathetic nerves to uptake MIBG. Application of MPTP also caused near-complete blockade of 125I-MIBG accumulation in PC-12 cells. In the experimental PD models, it was shown that neuronal accumulation of MIBG was impaired by the direct action of MPTP to the sympathetic cells. These findings support the idea that cardiac sympathetic nerves are primarily impaired in Parkinson's disease despite the presence or absence of systemic autonomic failure.
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Affiliation(s)
- H Takatsu
- First Department of Internal Medicine, Gifu Municipal Hospital, Japan.
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Yamamoto-Mitani N, Sugishita C, Ishigaki K, Hasegawa K, Maekawa N, Kuniyoshi M, Hayashi K. Development of instruments to measure appraisal of care among Japanese family caregivers of the elderly. Sch Inq Nurs Pract 2002; 15:113-35; discussion 137-41. [PMID: 11695490] [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] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
The purpose of this study was to develop two instruments for the evaluation of positive and negative appraisal of care among family caregivers of elderly Japanese care recipients within the framework of caregiver adaptation. The positive appraisal of care instrument (PAC) includes domains of relationship satisfaction, role confidence, consequential gain, and normative fulfillment. The negative appraisal of care instrument (NAC) includes domains of role exhaustion, isolation, relationship difficulty, and symptom management difficulty. The PAC and NAC are self-administered questionnaires and were developed from data collected from 337 family caregivers of relatives aged 65 years and over who were using visiting nursing services from 21 organizations in multiple areas of Japan. Out of 87 items, 21 PAC items and 14 NAC items were selected based on content and construct validity and internal consistency examination. Results show evidence of validity and reliability for the PAC and NAC, although some NAC domains may benefit from further refinement. The PAC and NAC will be useful research tools for examining elder caregiving experience and evaluating nursing care for elders.
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Abstract
OBJECTIVE Because plasma potassium, which may similarly change as plasma phosphate (P), decreases during moderate hypothermia, plasma P, a requisite electrolyte for the cell function, may alter during therapeutic moderate hypothermia for brain-injured patients. In 22 such patients who underwent moderate hypothermia or were treated with normothermia, plasma concentrations of P and other chemicals were examined. DESIGN A prospective study. SETTING The intensive care unit of a medical university hospital. PATIENTS AND INTERVENTIONS In 15 consecutive patients with brain injury who underwent moderate hypothermia and 7 serial patients treated with normothermia, plasma concentrations of P, potassium, glucose, blood gas tension and pH, daily urine volume, and water balance were examined. Inequality in the numbers of patients of the two groups was the result of patient exclusion because of multiple trauma, aluminum hydroxide administrations, hyperventilation, preexisting diabetes mellitus, or administration of insulin. Daily blood sampling was done around 8 am. Inclusion criteria included a Glasgow Coma Scale score assessment < or = 8 at admission to the emergency room and evidence of injury on computerized tomography scanning of the brain. MEASUREMENT AND MAIN RESULTS Hypothermia decreased plasma P levels as compared with those of normothermia within 4 days after the injury (this period was similar to the duration of the hypothermic phase in the hypothermia group). Such reduction related to changes in blood glucose levels, but not to any in the urine volume, or water balance. The P decrease occurred during the hypothermic phase, but subsequently there was a recovery of P after the rewarming phase. The changes in plasma potassium levels were similar to those in plasma P concentrations during the course. Such changes were accompanied by a recovery of decreased heart rate that occurred during the hypothermic phase. CONCLUSION The results suggest that moderate hypothermia of 32-33 degrees C decreases plasma P levels. Further studies are required to examine whether P repletion may overcome certain hemodynamic derangements during moderate hypothermia in brain-injured patients.
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Affiliation(s)
- M Aibiki
- Intensive Care Unit, Kagawa Medical University Hospital, Kagawa, Japan
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Ikeue T, Nishiyama H, Yokomise H, Ueshima K, Watanabe S, Sugita T, Horikawa S, Suzuki Y, Maekawa N. [A case of non-invasive pulmonary aspergillosis that rapidly deteriorated]. Nihon Kokyuki Gakkai Zasshi 2001; 39:582-6. [PMID: 11681024] [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] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
The pulmonary diseases caused by the Aspergillus species include invasive forms, for example, invasive pulmonary aspergillosis, chronic necrotizing pulmonary aspergillosis, and non-invasive pulmonary aspergillosis. Though these forms are defined pathologically by the presence of the Aspergillus species that invades the lung tissue, they are used as clinical entities. We report a case of non-invasive pulmonary aspergillosis which, from the clinical data, appeared likely to be misdiagnosed as the chronic invasive form. A 45 year-old man received chemoradiotherapy for lung cancer as well as undergoing an left upper lobectomy. Two weeks after the surgery the patient developed a cough, high fever and chest pain. Chest radiography and chest computed tomography showed a rapidly enlarging cavity with an internal mass and infiltration in the left lower lung field. A transbronchial biopsy specimen of the cavity wall showed fungal hyphae. Bronchial washing culture grew Aspergillus fumigatus. Itraconazole and amphotericin B were administered, but the patient's condition did not improve. A left lower lobectomy was performed. The histologic findings showed that the fungal hyphae were only on the surface of the cavity wall, and were surrounded by necrosis and widespread inflammatory cell infiltration. No fungal invasion of the viable lung tissue was seen. The area of infiltration revealed an organizing pneumonia without Aspergillus or other organisms. Our final diagnosis was non-invasive pulmonary aspergillosis. There has been no recurrence of the lung cancer or of the pulmonary aspergillosis in the three years since surgery. It is reported that non-invasive pulmonary aspergillosis passes through a period so active that it seems to be the invasive form for its entire clinical course. To avoid confusion in diagnosis, establishment of a comprehensive clinical classification of pulmonary aspergillosis will be needed.
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Affiliation(s)
- T Ikeue
- Department of Respiratory Disease, Japanese Red Cross Society Wakayama Medical Center, Wakayama, Japan
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Ikeue T, Ueshima K, Watanabe S, Sugita T, Horikawa S, Suzuki Y, Nishiyama H, Maekawa N. [Pneumonia caused by Nocardia nova]. Nihon Kokyuki Gakkai Zasshi 2001; 39:492-7. [PMID: 11579529] [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] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
This is the first clinical report of a case of pneumonia caused by Nocardia nova in Japan. A 52 year-old woman who had received steroids and cyclophosphamide for six years because of polymyositis was admitted to our hospital for further examination. On admission she had a mild cough, and her chest radiography and computed tomography revealed bilateral multiple nodules, some of which were cavitated. She developed a cough productive of yellow sputum and fever up to 38 degrees C. Examination of the sputum revealed a gram-positive branched organism and sputum cultures repeatedly grew Nocardia species. The isolate was identified as Nocardia nova later. Clinical recovery was obtained readily upon treatment with imipenem and trimethoprim methoxazole, though the latter drug was discontinued because of nausea and anorexia. This drug was therefore replaced with oral minocycline, which proved to be ineffective clinically although susceptibility testing of the drug showed positive sensitivity. Minocycline was replaced with clarithromycin, after which chest radiography and computed tomography showed almost total resolution of the infiltrates. Clarithromycin may be an alternative oral agent to sulfonamides or minocycline when these agents are ineffective or not tolerated.
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Affiliation(s)
- T Ikeue
- Department of Respiratory Disease, Japan Red Cross Society, Wakayama Medical Center, Wakayama, Japan
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Morita T, Saito K, Takemura M, Maekawa N, Fujigaki S, Fujii H, Wada H, Takeuchi S, Noma A, Seishima M. 3-Hydroxyanthranilic acid, an L-tryptophan metabolite, induces apoptosis in monocyte-derived cells stimulated by interferon-gamma. Ann Clin Biochem 2001; 38:242-51. [PMID: 11392499 DOI: 10.1258/0004563011900461] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.1] [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: 11/18/2022]
Abstract
3-Hydroxyanthranilic acid (3-HAA), a metabolite of L-tryptophan, accumulates in monocyte-derived cells (THP-1), but not in other cell lines tested (MRC-9, H4, U373MG, Wil-NS), following immune stimulation that induces indoleamine-2,3-dioxygenase (IDO), a rate-limiting enzyme in the L-tryptophan kynurenine pathway. We examined whether metabolites of the L-tryptophan-kynurenine pathway act to induce apoptosis in monocytes/macrophages. Of the L-tryptophan metabolites tested, only 3-HAA at a concentration of 200 micromol/L was found to induce apoptosis in THP-1 and U937 cells. The addition of ferrous or manganese ions further enhanced apoptosis and free radical formation by 3-HAA in these two types of cells. The apoptotic response induced by 3-HAA was significantly attenuated by the addition of antioxidant, alpha-tocopherol or Trolox (a water-soluble analogue of vitamin E), and the xanthine oxidase inhibitor, allopurinol. In addition, the 3-HAA-induced apoptotic response was slightly attenuated by catalase, but not by superoxide dismutase (SOD), indicating that generation of hydrogen peroxide is involved in this response. Interferon-gamma (IFN-gamma), an inducer of IDO, potently induced apoptosis in THP-1 cells, but not in U937 cells, in the presence of ferrous or manganese ions. This different susceptibility to apoptosis inducer between THP-1 and U937 cells may depend on the capacity of the cells for 3-HAA synthesis following IDO induction by IFN-gamma. Furthermore, apoptosis was suppressed by cycloheximide in THP-1 cells, suggesting that newly synthesized proteins may be essential for apoptotic events. These results suggest that 3-HAA induces apoptosis in monocytes/macrophages under inflammatory or other pathophysiological conditions.
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Affiliation(s)
- T Morita
- Department of Laboratory Medicine, Gifu University School of Medicine, Japan
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Kasahara-Imamura M, Hosokawa H, Maekawa N, Horio T. Activation of Fc epsilon RI-positive eosinophils in bullous pemphigoid. Int J Mol Med 2001; 7:249-53. [PMID: 11179502] [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: 02/18/2023] Open
Abstract
Bullous pemphigoid (BP) is an autoimmune disease frequently occurring in elderly persons. It has been reported that 92-kDa gelatinase released from eosinophils cleaves the extracellular domain of BP180 protein, suggesting a direct role of eosinophils in bulla formation in this disease. The expression of the high-affinity IgE receptor, Fc epsilon RI, on eosinophils was examined in patient with BP. Samples of affected skin obtained from 7 patients with BP were stained immunohistochemically by the alkaline phosphatase anti-alkaline phosphatase (APAAP) method and mirror sections were examined. Eosinophils were present at a rate of 1.0-19.0% in lesions of the dermis, and the number of IgE-positive cells exceeded that of Fc epsilon RI-positive cells in all cases. These cells were not detected in the epidermis, and examination of mirror sections confirmed that the Fc epsilon RI-positive cells corresponded to eosinophils. It has been demonstrated that Fc epsilon RI-positive cells are involved in the dermal lesions of BP. The activation of eosinophils by Fc epsilon RI may participate in the pathogenesis of BP by triggering the degranulation of mast cells.
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Affiliation(s)
- M Kasahara-Imamura
- Department of Dermatology, Kansai Medical University, Moriguchi-shi, Osaka 570-8506, Japan
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Nishina K, Mikawa K, Shiga M, Takao Y, Maekawa N, Obara H. Diclofenac and flurbiprofen with or without clonidine for postoperative analgesia in children undergoing elective ophthalmological surgery. Paediatr Anaesth 2001; 10:645-51. [PMID: 11119198 DOI: 10.1111/j.1460-9592.2000.00589.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
We conducted a prospective, randomized study to compare the efficacy of preoperative diclofenac, flurbiprofen, and clonidine, given alone, as well as the combination of diclofenac and clonidine, and flurbiprofen and clonidine in controlling postoperative pain in 125 children. The patients (ASA I, 2-12 years) undergoing elective ophthalmological surgery were allocated to one of five groups: rectal diclofenac 2 mg.kg(-1) following oral placebo premedication, i. v. flurbiprofen 1 mg.kg(-1) following placebo premedication, oral clonidine premedication, rectal diclofenac 2 mg.kg(-1) following clonidine, and i.v. flurbiprofen 1 mg.kg(-1) following clonidine. The children received clonidine (4 microg.kg(-1)) or placebo 105 min before anaesthesia. Diclofenac or flurbiprofen was given immediately after induction of anaesthesia. Anaesthesia was induced and maintained with sevoflurane and nitrous oxide in oxygen. Postoperative pain was assessed by a blinded observer using a modified objective pain scale (OPS). No opioids were administered throughout the study. Rectal diclofenac 2 mg.kg(-1) i.v. flurbiprofen 1 mg.kg(-1), oral clonidine 4 microg.kg(-1) provided similar OPS scores and requirement for supplementary analgesics during 12 h after surgery. Combination of oral clonidine and one of these nonsteroidal analgesics minimized postoperative pain. Our findings suggest that this combined regimen may be a promising prophylactic approach to postoperative pain control in children undergoing ophthalmological surgery.
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Affiliation(s)
- K Nishina
- Department of Anaesthesiology, Kobe University School of Medicine, Chuo-ku, Kobe, Japan
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Wada H, Saito K, Kanda T, Kobayashi I, Fujii H, Fujigaki S, Maekawa N, Takatsu H, Fujiwara H, Sekikawa K, Seishima M. Tumor necrosis factor-alpha (TNF-alpha) plays a protective role in acute viralmyocarditis in mice: A study using mice lacking TNF-alpha. Circulation 2001; 103:743-9. [PMID: 11156888 DOI: 10.1161/01.cir.103.5.743] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND It has been reported that tumor necrosis factor-alpha (TNF-alpha) is expressed in the heart with viral myocarditis and that its expression aggravates the condition. The pathophysiological effects of TNF-alpha on viral myocarditis, however, have not been fully elucidated. METHODS AND RESULTS To investigate the role of TNF-alpha in the progression of viral myocarditis, we used TNF-alpha gene-deficient mice (TNF-alpha(-/-)) and induced acute myocarditis by infection with encephalomyocarditis virus (EMCV). The survival rate of TNF-alpha(-/-) mice after EMCV infection was significantly lower than that of TNF-alpha(+/+) mice (0% versus 67% on day 14). Injection of recombinant human TNF-alpha (0.2 to 4.0 microg/mouse IV) improved the survival of TNF-alpha(-/-) mice in a dose-dependent manner, indicating that TNF-alpha is essential for protection against viral myocarditis. The levels of viral titer and viral genomic RNA of EMCV in the myocardium were significantly higher in TNF-alpha(-/-) than in TNF-alpha(+/+) mice. Histopathological examination showed that the inflammatory changes of the myocardium were less marked in TNF-alpha(-/-) than in TNF-alpha(+/+) mice. Immunohistochemical analysis revealed that the levels of immunoreactivity of intercellular adhesion molecule-1 and vascular cell adhesion molecule-1 in the myocardium were decreased in TNF-alpha(-/-) mice compared with TNF-alpha(+/+) mice. CONCLUSIONS These observations suggested that TNF-alpha is necessary for adhesion molecule expression and to recruit leukocytes to inflammatory sites, and thus, the lack of this cytokine resulted in failure of elimination of infectious agents. We concluded that TNF-alpha plays a protective role in the acute stage of viral myocarditis.
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Affiliation(s)
- H Wada
- Department of Laboratory Medicine, Gifu University School of Medicine, Gifu, Japan.
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Nishiyama T, Tsukamoto I, Shirakawa Y, Komatsu H, Maekawa N, Kinoshita H, Ameno K, Ijiri I. Fourier transform infrared (FTIR) analysis of volatile compounds in expired gas for the monitoring of poisonings 1. Ethanol. Pharm Res 2001; 18:125-8. [PMID: 11336347 DOI: 10.1023/a:1011095214643] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T Nishiyama
- Dept. of Anesthesiology and Emergency Medicine, Kagawa Medical University, Miki, Japan
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Shiga M, Nishina K, Mikawa K, Uesugi T, Maekawa N, Obara H. Oral clonidine premedication does not change efficacy of simulated epidural test dose in sevoflurane-anesthetized children. Anesthesiology 2000; 93:954-8. [PMID: 11020745 DOI: 10.1097/00000542-200010000-00013] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [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: 11/25/2022]
Abstract
BACKGROUND Caudal epidural anesthesia is often used as an adjunct to general anesthesia and for postoperative pain relief in children. In anesthetized children, epinephrine and isoproterenol are reliable indicators to detect accidental intravascular injection of a test dose. Oral clonidine, a useful premedicant in pediatric anesthesia, modifies hemodynamic responses to sympathomimetics, including catecholamines. The aim of the current study was to determine whether oral clonidine premedication alters the efficacy of a simulated intravascular test dose containing epinephrine or isoproterenol in sevoflurane-anesthetized children. METHODS One hundred twenty children (aged 1-7 yr) were randomly divided into six groups; control-saline, control-epinephrine, control-isoproterenol, clonidine-saline, clonidine-epinephrine, and clonidine-isoproterenol. The three clonidine groups received oral clonidine 4 microg/kg [DOSAGE ERROR CORRECTED] as premedication, whereas the three control groups did not receive any premedication. Anesthesia was maintained with sevoflurane at a level of 1.2 minimum alveolar concentration. After hemodynamics were stable, 0.1 ml/kg of 1% lidocaine containing epinephrine 0.5 mg/kg or isoproterenol 75 ng/kg was intravenously given to the two epinephrine or isoproterenol groups, respectively, to simulate intravascular injection of a test dose. The saline groups received saline alone instead of the test dose. Heart rate, blood pressure, and T-wave amplitude of electrocardiogram were recorded before and after administration of study drugs for subsequent analysis. RESULTS Test solution containing epinephrine increased heart rate, systolic blood pressure, and T-wave amplitude. Oral clonidine had no effect on elevation of these variables in response to epinephrine. The isoproterenol-containing test dose produced a prominent increase in heart rate and a less pronounced increase in systolic blood pressure and T-wave amplitude. Oral clonidine also failed to modify isoproterenol-induced hemodynamic and T-wave changes. Calculated sensitivity and specificity of epinephrine or isoproterenol were all 100% based on a new heart rate criterion (positive if >/= 10 beats/min) and were unaltered by oral clonidine premedication. CONCLUSIONS Epinephrine or isoproterenol is a reliable marker to detect accidental intravascular injection of a test dose with 100% sensitivity and specificity based on a new heart rate criterion in sevoflurane-anesthetized children. These data suggest that oral clonidine premedication does not alter the efficacy of a simulated epidural test dose containing epinephrine or isoproterenol.
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Affiliation(s)
- M Shiga
- Department of Anesthesiology, Kobe Children's Hospital, Kobe, Japan
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Fei H, Maeda S, Kirii H, Fujigaki S, Maekawa N, Fujii H, Wada H, Saito K, Seishima M. Evaluation of two different homogeneous assays for LDL-cholesterol in lipoprotein-X-positive serum. Clin Chem 2000; 46:1351-6. [PMID: 10973865] [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: 02/17/2023]
Abstract
BACKGROUND The purpose of this study was to evaluate the performance of two homogeneous assays for LDL-cholesterol (LDL-C), a polyethylene/cyclodextrin (PC) assay and a detergent (D) assay, which are based on different principles, in cholestatic serum. METHODS We compared serum LDL-C concentrations determined by the two assays for healthy normolipidemic subjects (n = 42) and cholestatic patients (n = 51). LDL-C concentrations obtained with the homogeneous assays were also compared with those obtained by HPLC for patients' sera. In the interference study, conjugated bile acids were added to normal serum, and their effects on the two assays were examined. The effects of lipoprotein-X (LP-X), intermediate-density lipoprotein (IDL), and apolipoprotein (apo) E-rich HDL on the LDL-C assays were also investigated by adding these lipoproteins to normal serum. RESULTS The LDL-C concentrations obtained with the D assay were higher than those obtained with the PC assay in the serum with high LP-X. The bias for LDL-C vs LP-X in cholestatic serum correlated with LP-X concentration (r = 0.582; P: <0.0001; n = 51). In the interference study, no effect of bile acids on the LDL-C assays was observed. However, the D assay measured 51.0% of the cholesterol in LP-X, whereas no reactivity was observed for LP-X in the PC assay. In addition, the D assay and the PC assay measured IDL-cholesterol at 31.2% and 52.4%, respectively, and measured apo E-rich HDL-C at 7.6% and 17.8%, respectively. CONCLUSIONS Although both homogeneous LDL-C assays are suitable for most cases, the present study showed that each homogeneous assay has a different limitation for cholestatic serum with gross alterations in lipoproteins.
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Affiliation(s)
- H Fei
- Department of Laboratory Medicine, Gifu University School of Medicine, 40 Tsukasa-machi, Gifu 500-8705, Japan
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Abstract
OBJECTIVES Sepsis or endotoxemia causes diaphragmatic dysfunction, which may contribute to respiratory distress. Toxic free radicals are partly responsible for the pathogenesis. Lidocaine scavenges the reactive molecules. The purpose of the current study was to examine whether lidocaine prevents the diaphragmatic dysfunction of sepsis. DESIGN Prospective, randomized animal study. SETTING University research laboratory. SUBJECTS A total of 40 male Golden-Syrian hamsters. INTERVENTIONS The animals were randomly allocated to one of five groups (n = 8 each): hamsters undergoing sham laparotomy alone and receiving saline infusion (Sham group), those undergoing cecal ligation with puncture (CLP) and receiving an infusion of saline (Sepsis group), those undergoing sham laparotomy and receiving infusion of lidocaine, 2 mg/kg/hr (Sham-LID group), those undergoing CLP and receiving infusion of lidocaine, 1 mg/kg/hr (Sepsis-LID 1 group), and those undergoing CLP and receiving infusion of lidocaine, 2 mg/kg/hr (Sepsis-LID 2 group). Subcutaneous infusion of saline or lidocaine was started 6 hrs before surgery and continued until 24 hrs after the operation when all hamsters were killed. MEASUREMENTS AND MAIN RESULTS Diaphragmatic contractility and fatigability were assessed in vitro by using muscle strips excised from the costal diaphragms. Diaphragmatic levels of malondialdehyde (MDA), an index of free radicals-mediated lipid peroxidation, were also measured. Twitch and tetanic tensions in the Sepsis group were reduced compared with the Sham group. Tensions generated during fatigue trials were decreased, and MDA levels were elevated in diaphragms from the Sepsis group. An infusion of 2 mg/kg/hr lidocaine attenuated contractile dysfunction, aggravation of fatigability, and the increase in MDA formation. In contrast, 1 mg/kg/hr lidocaine failed to do so. Electrophysiologic diaphragmatic characteristics in the Sham-LID group were similar to those in the Sham group. CONCLUSIONS Pretreatment with 2 mg/kg/hr but not 1 mg/kg/hr lidocaine attenuated sepsis-induced diaphragmatic dysfunction in hamsters assessed by contractile profiles and endurance capacity. This beneficial effect of lidocaine may be attributable, in part, to inhibition of lipid peroxidation in the diaphragm.
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Affiliation(s)
- S Kodama
- Department of Anesthesiology, Kobe University School of Medicine, Japan
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Kato H, Yoshida M, Takata K, Kanehara H, Maekawa N, Ohnishi T, Murakita H, Kuriyama T, Yamamoto M. Hemodynamic abnormalities in the left atrial appendage in patients with paroxysmal atrial fibrillation, with special reference to albumin-contrast echocardiographic aspects. Cardiology 2000; 92:135-43. [PMID: 10702657 DOI: 10.1159/000006961] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
AIM We assessed the prolonged dysfunction of the left atrial appendage caused by paroxysmal atrial fibrillation. METHODS AND RESULTS Transesophageal echocardiography with intravenous albumin-microspheres (Albunex, 0.2 ml/kg) was performed in 100 consecutive patients (44 patients in sinus rhythm without previous paroxysmal atrial fibrillation: 13 patients in sinus rhythm who had had previous episodes of paroxysmal atrial fibrillation; and 43 patients with sustained atrial fibrillation). We compared the left atrial appendage ejection fraction and degree of opacification in the left atrial appendage with Albunex in the groups. Patients with previous paroxysmal atrial fibrillation had lower left atrial appendage ejection fractions than patients in sinus rhythm without paroxysmal atrial fibrillation (33 +/- 14 vs. 47 +/- 14%, p < 0.001). More than half of the patients (7/13 [54%]) with previous paroxysmal atrial fibrillation showed delayed and incomplete opacification of the left atrial appendage with Albunex. CONCLUSION We conclude that paroxysmal atrial fibrillation causes left atrial appendage stunning, at least in some patients.
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Affiliation(s)
- H Kato
- Department of Internal Medicine, Fukui Kosei Hospital, Fukui, Japan
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Nishina K, Mikawa K, Shiga M, Kodama S, Kagawa T, Maekawa N, Obara H. Attenuation of hyperoxia-induced diaphragmatic dysfunction with lidocaine in hamsters. Crit Care Med 2000; 28:1973-8. [PMID: 10890650 DOI: 10.1097/00003246-200006000-00048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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: 11/26/2022]
Abstract
OBJECTIVE Toxic free radicals cause dysfunction of respiratory muscles, probably leading to respiratory distress. Exposure to high concentrations of oxygen generates plenty of free radicals. Lidocaine scavenges the reactive molecules. The purposes of the current study were first to examine whether hyperoxia impairs diaphragmatic function, and second, to assess the effects of lidocaine on hyperoxia-induced diaphragmatic dysfunction, if developed. DESIGN Prospective, randomized animal study. SETTING University research laboratory. SUBJECTS Forty and 48 adult male Golden-Syrian hamsters (110-150 g) in parts I and II studies, respectively. INTERVENTION In the part I study, hyperoxia for 5 and 6 days reduced diaphragmatic contractility and enhanced fatigue. In the part II study, hamsters were randomly allocated to one of six groups (n = 8 each): exposure to air for 6 days with saline (group A-S) or lidocaine infusion (group A-L), exposure to 100% oxygen for 5 days with saline (group 05-S) or lidocaine (group 05-L), and exposure to 100% oxygen for 6 days with saline (group 06-S) or lidocaine (group 06-L). Saline or lidocaine (2 mg/kg/hr) was subcutaneously given immediately before exposure to air or oxygen. Diaphragmatic contractility and fatigability were assessed in vitro using muscle strips excised from the costal diaphragms. Diaphragmatic levels of malondialdehyde (MDA), an index of free radical-mediated lipid peroxidation, were measured. These variables were compared between groups. MEASUREMENTS AND MAIN RESULTS Twitch and tetanic tensions in groups 05-S and 06-S were reduced compared with group A-S. Tensions generated during fatigue trials were also decreased in groups 05-S and 06-S. MDA levels were elevated in diaphragms from these groups. In groups 05-L and 06-L, contractile dysfunction, deterioration of fatigability, and MDA formation in the diaphragm were attenuated. CONCLUSIONS Lidocaine attenuated hyperoxia-induced diaphragmatic dysfunction assessed by contractile profiles and fatigability in hamsters. This beneficial effect may be attributable, in part, to inhibition of lipid peroxidation.
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Affiliation(s)
- K Nishina
- Department of Anaesthesiology, Kobe University School of Medicine, Japan
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Izuta S, Yaku H, Kiyonari Y, Maekawa N, Obara H. [Anesthetic management of a patient with mitochondrial encephalomyopathy]. Masui 2000; 49:649-51. [PMID: 10885246] [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] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
A 46-year-old female with mitochondrial encephalomyopathy underwent the replacement of right femur head under continuous epidural anesthesia. Considering that this disease is a neuromuscular disorder, general anesthesia should be avoided. In addition, the patients with mitochondrial encephalomyopathy tend to show increased concentrations of lactate and pyruvate caused by perioperative stress. Use of lactated Ringer's solution may elevate these concentrations. We managed this patient uneventfully with continuous epidural anesthesia and the use of acetated Ringer's solution during the perioperative period. We consider that continuous epidural anesthesia is useful for a patient with mitochondrial encephalomyopathy.
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Affiliation(s)
- S Izuta
- Department of Anesthesiology, Kobe University School of Medicine
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Morita T, Saito K, Takemura M, Maekawa N, Fujigaki S, Fujii H, Wada H, Takeuchi S, Noma A, Seishima M. L-tryptophan-kynurenine pathway metabolite 3-hydroxyanthranilic acid induces apoptosis in macrophage-derived cells under pathophysiological conditions. Adv Exp Med Biol 2000; 467:559-63. [PMID: 10721100 DOI: 10.1007/978-1-4615-4709-9_69] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Accumulation of L-kynurenine and 3-hydroxyanthranilic acid (3HAA) occurs in the monocyte-derived cells following immune stimulation, and may derive from L-tryptophan following induction of indoleamine-2,3-dioxygenase. In the present study, we evaluate the possibility that 3HAA acts as an endogenous inducer of monocyte/macrophage apoptosis. Supplementation with 200 microM of 3HAA, but not other L-tryptophan metabolites tested, significantly increased the number of apoptotic cells in both THP-1 and U937 cells. Catalase, superoxide dismutase and manganese ions markedly enhanced apoptosis in the presence of 3HAA in these cells. The present results suggest that 3HAA induces the macrophage/monocyte apoptosis under certain conditions, which may be relevant to pathophysiology of inflammatory conditions.
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Affiliation(s)
- T Morita
- Department of Laboratory Medicine, Gifu University School of Medicine, Japan.
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Tamaya S, Ihara C, Tsuji K, Nanno M, Maekawa N, Matsumoto S, Imai T. [Isolated ACTH deficiency with severe muscle atrophy]. Nihon Naika Gakkai Zasshi 2000; 89:983-5. [PMID: 10853487 DOI: 10.2169/naika.89.983] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- S Tamaya
- Department of Internal Medicine, Kitano Hospital, Osaka
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Abstract
OBJECTIVES Neutrophils play an important role in ridding the body of bacteria and cellular debris. Several neutrophil functions are thought to be regulated by inotropes that increase cellular levels of cyclic adenosine monophosphate, including phosphodiesterase (PDE) inhibitors. We have investigated the effect of amrinone, milrinone, and olprinone, type III PDE (PDE-III) inhibitors, on several human neutrophil functions. DESIGN Prospective in vitro study. SETTING Academic research laboratory. SUBJECTS Neutrophils isolated from 12 healthy adult volunteers. INTERVENTIONS We measured chemotaxis, phagocytosis, reactive oxygen species production, intracellular calcium ion concentration, and cyclic adenosine monophosphate levels in neutrophils in the absence and the presence (at clinically relevant concentrations, 10 times, and 100 times those concentrations) of amrinone, milrinone, or olprinone. We also measured reactive oxygen species production under the same condition in a xanthine-xanthine oxidase system MEASUREMENTS AND MAIN RESULTS None of the PDE-III inhibitors impaired neutrophil chemotaxis or phagocytosis. Amrinone at clinically relevant or higher concentrations and milrinone at high concentrations reduced superoxide, hydrogen peroxide, and hydroxyl radical levels in neutrophils and in the xanthine-xanthine oxidase system. Olprinone did not have those effects, and none of the PDE-III inhibitors had an effect on intracellular calcium ion concentration or cyclic adenosine monophosphate production in neutrophils stimulated by a chemotactic factor. CONCLUSIONS The ability of amrinone to scavenge reactive oxygen species at clinically relevant concentrations while not affecting neutrophil function suggests that the PDE inhibitor can be used without detriment in severely ill patients.
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Affiliation(s)
- K Mikawa
- Department of Anaesthesiology, Kobe University School of Medicine, Japan
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Nishina K, Mikawa K, Takao Y, Shiga M, Maekawa N, Obara H. A comparison of rabeprazole, lansoprazole, and ranitidine for improving preoperative gastric fluid property in adults undergoing elective surgery. Anesth Analg 2000; 90:717-21. [PMID: 10702463 DOI: 10.1097/00000539-200003000-00038] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
UNLABELLED Acid aspiration syndrome at the induction of anesthesia is still a potentially life-threatening complication. Its severity is affected by both pH and volume of the gastric juice that is aspirated. We compared the effects of rabeprazole (a new proton pump inhibitor), lansoprazole, and ranitidine on gastric fluid properties in a prospective, randomized, double-blinded fashion in 180 adult patients undergoing elective surgery. Patients were divided into six groups (n = 30 in each) according to their premedication. Patients in each group received placebo-rabeprazole (PLA-RAB), rabeprazole-placebo (RAB-PLA), rabeprazole-rabeprazole (RAB-RAB), lansoprazole-lansoprazole (LAN-LAN), placebo-ranitidine (PLA-RAN), or placebo-placebo (PLA-PLA) for the first-second medication. Each dose of the study drug was 20 mg for rabeprazole, 30 mg for lansoprazole, and 150 mg for ranitidine. The first medication was given orally at 9:00 PM on the day before surgery and the second at 5:30 AM on the day of surgery. Each patient fasted overnight and took the drug with 20 mL of water. After tracheal intubation, gastric fluid was aspirated via an orogastric tube, and the volume and pH of the aspirate was measured. Preoperative gastric fluid acidity and volume were improved by the study drugs in the following order: PLA-RAN (pH 5.3, volume 0.10 mL/kg), RAB-RAB, LAN-LAN, PLA-RAB, and RAB-PLA (pH 3.8, volume 0.22 mL/kg). The proportion of patients at risk of acid aspiration syndrome according to the traditional criteria (pH < 2.5 and volume > 0.4 mL/kg) was minimized in Groups RAB-RAB and PLA-RAN (0%). We concluded that a single morning dose of ranitidine rather than two doses (bedtime and morning) of rabeprazole was the most effective premedicant to control gastric fluid properties and to minimize the risk of aspiration pneumonitis. IMPLICATIONS Acid aspiration syndrome at the induction of anesthesia is rare but still a potentially life-threatening complication. We compared rabeprazole, lansoprazole, and ranitidine for reduction of preoperative gastric fluid acidity and volume in elective surgery and found that a combination of bedtime and morning doses of rabeprazole, or a morning dose of ranitidine, similarly minimized the variables. In adult patients who are at risk of aspirating gastric contents, improvement of gastric fluid environment by rabeprazole can reasonably be anticipated to provide protection against pneumonitis should regurgitation and aspiration of gastric contents occur.
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Affiliation(s)
- K Nishina
- Departments of Anaesthesiology and Intensive Care Unit, Kobe University School of Medicine, Kobe, Japan
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Mikawa K, Akamatsu H, Nishina K, Shiga M, Maekawa N, Obara H, Niwa Y. The effects of sarpogrelate on superoxide production by human neutrophils. Reg Anesth Pain Med 2000; 25:181-6. [PMID: 10746532 DOI: 10.1053/rapm.2000.0250181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND AND OBJECTIVES Superoxide anion (O2-) released from neutrophils plays an important role in antibacterial host defense system and tissue auto-injury. Sarpogrelate, a serotonin-receptor antagonist, has been successfully used for management of chronic pain caused by arterial occlusive or ischemic vascular diseases, or by microcirculation disturbances. Suppression of O2- generation may be detrimental to infection or contribute to the therapeutic approach to these diseases, the pathogenesis of which probably includes neutrophil activation. No data regarding the effects of sarpogrelate on neutrophil functions are available despite the possible clinical concern. The purpose of this study was to determine whether sarpogrelate reduces O2- production by human neutrophils using an in vitro system. In addition, we examined changes in concentrations of the intracellular calcium ion ([Ca2+]i), which is responsible for one of the mechanisms of the neutrophils' O2- production. METHODS The O2- production by human neutrophils or the xanthine-xanthine oxidase system and [Ca2+]i were measured in the absence and the presence (at clinically relevant concentrations: 0.1x, 10x, and 100x these concentrations) of sarpogrelate. RESULTS Sarpogrelate inhibited O2- production of neutrophils in a dose-dependent manner. The drug at a clinically relevant concentration suppressed this neutrophil function. In contrast, sarpogrelate failed to inhibit O2-generation by the cell-free (xanthine-xanthine oxidase) system. Elevation of [Ca2+]i in neutrophils stimulated by a chemotactic factor was dose-dependently attenuated with sarpogrelate. CONCLUSIONS These findings suggest that sarpogrelate (even at clinically relevant concentrations) is able to inhibit O2- production by neutrophils. However, the drug failed to quench an excessive amount of O2- (similar to the level produced by neutrophils). There is a possibility that the inhibitory effect of the drug on [Ca2+]i response in neutrophils may contribute to impairment of the neutrophils' O2- production. Further studies using in vivo systems are required to elucidate the inhibitory effects of sarpogrelate on O2- in clinical settings.
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Affiliation(s)
- K Mikawa
- Department of Anaesthesiology, Kobe University School of Medicine, Japan
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49
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Abstract
OBJECTIVE Acute severe pancreatitis is often associated with acute lung injury, including acute respiratory distress syndrome. Acute lung injury induced by phospholipase A2 (PLA2) or trypsin, a pancreatic enzyme, is an experimental model resembling acute respiratory distress syndrome. Neutrophils and platelets are thought to play a pivotal role in the pathogenesis of acute respiratory failure. Lidocaine inhibits some aspects of neutrophil and platelet functions. We conducted the current study to assess the effects of pretreatment with lidocaine on acute lung injury induced by a combination of PLA2 and trypsin. DESIGN Prospective, randomized animal study. SETTING University research laboratory. SUBJECTS Twenty-one adult male Japanese White rabbits (weight range, 2.0-2.4 kg). INTERVENTIONS The animals were mechanically ventilated with a tidal volume of 10 mL/kg and an Fio2 of 0.4, and thereafter, they were randomly assigned to three groups. Acute lung injury was induced by a combination of PLA2 (1000 units/kg/hr) and trypsin (5000 units/kg/hr) infused intravenously for 4 hrs. Immediately before induction of the acute lung injury, the lidocaine treatment group received intravenous lidocaine (2 mg/kg bolus followed by 2 mg/kg/hr) until they were killed. In the nontreatment group, saline was given instead of lidocaine. Rabbits in the nonlung-injury group received saline infusion instead of the pancreatic enzymes. MEASUREMENTS AND MAIN RESULTS During the experimental period (4 hrs), arterial blood gases, lung mechanics, and peripheral neutrophil and platelet counts were measured. Immediately after killing, the wet weight/dry weight ratio of the lung was recorded. Light microscopic findings (lung injury score and number of neutrophils) were compared between the three groups. The combination of PLA2 and trypsin decreased Pao2, lung compliance, and peripheral counts of neutrophils and platelets and increased alveolar/arterial oxygen tension difference, lung resistance, wet weight/dry weight ratio, and the number of neutrophils in the lung. Lidocaine treatment attenuated these changes. The two pancreatic enzymes caused extensive morphologic lung damage, which was lessened by lidocaine. CONCLUSIONS We conclude that pretreatment with intravenous lidocaine attenuated the lung injury induced by the pancreatic enzymes. However, further studies are required to determine whether this drug has a therapeutic effect once the lung injury has developed.
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Affiliation(s)
- Y Kiyonari
- Department of Anesthesiology, Kobe University School of Medicine, Japan
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50
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Furue S, Kuwabara K, Mikawa K, Nishina K, Shiga M, Maekawa N, Ueno M, Chikazawa Y, Ono T, Hori Y, Matsukawa A, Yoshinaga M, Obara H. Crucial role of group IIA phospholipase A(2) in oleic acid-induced acute lung injury in rabbits. Am J Respir Crit Care Med 1999; 160:1292-302. [PMID: 10508821 DOI: 10.1164/ajrccm.160.4.9812042] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.4] [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: 11/16/2022] Open
Abstract
Group IIA secretory phospholipase A(2) (sPLA(2)) has been implicated in a variety of inflammatory diseases including acute lung injury (ALI); however, the role of sPLA(2) in this disorder remains unclear. The aim of the present investigation was to examine the role of this enzyme in a model of ALI induced by oleic acid (OA) in rabbits by testing human group IIA phospholipase A(2) (PLA(2)) inhibitor, S-5920/LY315920Na. Experimental groups consisted of a saline control group (n = 8), an OA control group (n = 10) infused intravenously with OA (0.1 ml/kg/h for 2 h), and three groups given OA + S-5920/LY315920Na (three different doses, n = 8, respectively). Infusion of OA provoked pulmonary hemorrhage and edema formation, protein leakage, and massive neutrophil infiltration, resulting in severe hypoxemia and impaired lung compliance. PLA(2) activity was detected in the bronchoalveolar lavage fluid (BALF), but not plasma, which correlated well with severity of lung injury in this model. Pretreatment with S-5920/LY315920Na diminished the OA-induced PLA(2) activity in the BALF and dose-dependently attenuated the previously described lung injury induced by OA, accompanied by protection against lung surfactant degradation and production of thromboxane A(2) (TXA(2)) and leukotriene B(4) (LTB(4)). S-5920/LY315920Na also inhibited the OA-induced production of interleukin-8 (IL-8), both in plasma and BALF. Thus, sPLA(2) appears to play a key role in OA-induced lung injury, suggesting that the group IIA PLA(2) inhibitor may be a promising agent for patients with acute respiratory distress syndrome (ARDS).
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Affiliation(s)
- S Furue
- Department of Anesthesiology, Kobe University School of Medicine, Kobe, Japan
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