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Yamagami Y, Asao M, Takahashi A, Hashimoto Y, Okuyama N, Arai E, Arihara W, Masui R, Shimazaki Y. Prevalence and antimicrobial resistance of Enterococcus spp. isolated from animal feed in Japan. Front Vet Sci 2024; 10:1328552. [PMID: 38327814 PMCID: PMC10847256 DOI: 10.3389/fvets.2023.1328552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 12/26/2023] [Indexed: 02/09/2024] Open
Abstract
The rising prevalence of antimicrobial resistance (AMR) of bacteria is a global health problem at the human, animal, and environmental interfaces, which necessitates the "One Health" approach. AMR of bacteria in animal feed are a potential cause of the prevalence in livestock; however, the role remains unclear. To date, there is limited research on AMR of bacteria in animal feed in Japan. In this study, a total of 57 complete feed samples and 275 feed ingredient samples were collected between 2018 and 2020. Enterococcus spp. were present in 82.5% of complete feed (47/57 samples), 76.5% of soybean meal (62/81), 49.6% of fish meal (55/111), 33.3% of poultry meal (22/66), and 47.1% of meat and bone meal (8/17) samples. Of 295 isolates, E. faecium (33.2% of total isolates) was the dominant Enterococcus spp., followed by E. faecalis (14.2%), E. hirae (6.4%), E. durans (2.7%), E. casseliflavus (2.4%), and E. gallinarum (1.0%). Of 134 isolates which were tested for antimicrobial susceptibility, resistance to kanamycin was the highest (26.1%), followed by erythromycin (24.6%), tetracycline (6.0%), lincomycin (2.2%), tylosin (1.5%), gentamicin (0.8%), and ciprofloxacin (0.8%). All Enterococcus spp. exhibited susceptibility to ampicillin, vancomycin, and chloramphenicol. Of 33 erythromycin-resistant isolates, only two showed a high minimum inhibitory concentration value (>128 μg/mL) and possessed ermB. These results revealed that overall resistance to antimicrobials is relatively low; however, animal feed is a source of Enterococcus spp. It is essential to elucidate the causative factors related to the prevalence of AMR in animal feed.
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Affiliation(s)
- Yohei Yamagami
- Department of Fertilizer and Feed Inspection, Food and Agricultural Materials Inspection Center, Saitama, Japan
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Ikegaya A, Yamazaki S, Yamaga I, Kosugi T, Toyoizumi T, Nagafuji A, Saika T, Arai E. Controlled atmosphere maintains the quality of certain fresh produce in mixed cargo shipments. J FOOD PROCESS ENG 2023. [DOI: 10.1111/jfpe.14297] [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: 02/11/2023]
Affiliation(s)
- Atsushi Ikegaya
- Shizuoka Professional University Junior College of Agriculture Iwata Shizuoka Japan
- Shizuoka Professional University of Agriculture Iwata Shizuoka Japan
- Shizuoka Prefectural Research Institute of Agriculture and Forestry Iwata Shizuoka Japan
- Graduate School of Integrated Pharmaceutical and Nutritional Sciences University of Shizuoka Suruga‐ku Shizuoka Japan
| | - Shigehiro Yamazaki
- Shizuoka Prefectural Research Institute of Agriculture and Forestry Iwata Shizuoka Japan
| | - Ittetsu Yamaga
- Shizuoka Professional University Junior College of Agriculture Iwata Shizuoka Japan
- Shizuoka Professional University of Agriculture Iwata Shizuoka Japan
| | - Toru Kosugi
- Shizuoka Prefectural Research Institute of Agriculture and Forestry Iwata Shizuoka Japan
| | - Tomoyasu Toyoizumi
- Shizuoka Prefectural Research Institute of Agriculture and Forestry Iwata Shizuoka Japan
| | - Akihiko Nagafuji
- Shizuoka Professional University Junior College of Agriculture Iwata Shizuoka Japan
- Shizuoka Professional University of Agriculture Iwata Shizuoka Japan
- Shizuoka Prefectural Research Institute of Agriculture and Forestry Iwata Shizuoka Japan
| | - Takehiro Saika
- Chubu Regional Development Bureau, Ministry of Land, Infrastructure, Transport, and Tourism, Japan Nagoya Aichi Japan
| | - Eiko Arai
- Graduate School of Integrated Pharmaceutical and Nutritional Sciences University of Shizuoka Suruga‐ku Shizuoka Japan
- School of Food and Nutritional Sciences University of Shizuoka Suruga‐ku Shizuoka Japan
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Kunimaru W, Ito S, Motohashi R, Arai E. Ease of swallowing potato paste in people with dysphagia: effect of potato variety. International Journal of Food Properties 2021. [DOI: 10.1080/10942912.2021.1908353] [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] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Wakana Kunimaru
- School of Food and Nutritional Sciences, University of Shizuoka, Suruga-ku, Shizuoka, Japan
| | - Seiko Ito
- School of Food and Nutritional Sciences, University of Shizuoka, Suruga-ku, Shizuoka, Japan
| | - Reiko Motohashi
- Faculty of Agriculture, Shizuoka University, Suruga-ku, Shizuoka, Japan
| | - Eiko Arai
- School of Food and Nutritional Sciences, University of Shizuoka, Suruga-ku, Shizuoka, Japan
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Deguchi M, Ito S, Motohashi R, Arai E. Effects of taro (<i>Colocasia esculenta</i> L. Schott) drying on the properties of taro flour and taro flour products. FSTR 2021. [DOI: 10.3136/fstr.27.369] [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] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Mai Deguchi
- Graduate School of Integrated Pharmaceutical and Nutritional Sciences, University of Shizuoka
| | - Seiko Ito
- School of Food and Nutritional Sciences, University of Shizuoka
| | | | - Eiko Arai
- School of Food and Nutritional Sciences, University of Shizuoka
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5
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Imamura M, Ito S, Arai E. Effects of different types of hydrocolloids on the quality improvement of gluten-free rice flour bread made with soymilk. FSTR 2021. [DOI: 10.3136/fstr.27.389] [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] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Mana Imamura
- School of Food and Nutritional Sciences, University of Shizuoka
| | - Seiko Ito
- School of Food and Nutritional Sciences, University of Shizuoka
| | - Eiko Arai
- School of Food and Nutritional Sciences, University of Shizuoka
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Ito S, Arai E. Improvement of gluten-free steamed bread quality by partial substitution of rice flour with powder of Apios americana tuber. Food Chem 2020; 337:127977. [PMID: 32919271 DOI: 10.1016/j.foodchem.2020.127977] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 10/29/2019] [Revised: 08/14/2020] [Accepted: 08/30/2020] [Indexed: 11/19/2022]
Abstract
This study investigated the effect of powder made from tubers of the legume Apios americana (Apios) as a rice flour substitute in the making of gluten-free steamed bread. The carbohydrates of Apios powder were mainly starch and sucrose, and included legume-specific raffinose and stachyose. Apios powder contained almost no α-amylase but had a high level of β-amylase activity. Substitution of rice flour with Apios powder delayed the hardening of bread on storage and helped to maintain cohesiveness. Apios powder-substituted bread had higher maltose content than unsubstituted control bread due to β-amylase activity in the Apios powder. Bread substituted with 10% Apios powder had a significantly higher degree of gelatinization than the control even after storage, most likely due to lower amounts of recrystallized amylose as determined by differential scanning calorimetry. These results demonstrate Apios powder as promising a new food ingredient for improving the quality of gluten-free rice bread.
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Affiliation(s)
- Seiko Ito
- School of Food and Nutritional Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Eiko Arai
- School of Food and Nutritional Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
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Ikegaya A, Ohba S, Nakajima T, Toyoizumi T, Ito S, Arai E. Practical long-term storage of strawberries in refrigerated containers at ice temperature. Food Sci Nutr 2020; 8:5138-5148. [PMID: 32994974 PMCID: PMC7500797 DOI: 10.1002/fsn3.1817] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/17/2020] [Accepted: 07/18/2020] [Indexed: 01/30/2023] Open
Abstract
This study investigated the effect of storage temperature in the presence or absence of film packaging on the Benihoppe and Kirapika varieties of Japanese strawberries stored for 28 days at 0°C and 3°C. The study was conducted in a 20-foot reefer container for practicality. Storage at 0°C suppressed decay and reduction in sugars and organic acids more efficiently than that at 3°C. Softening of fruit hardness was also suppressed depending on the variety. The reduction in sugars and organic acids did not affect strawberry palatability. Along with low temperature, long-term storage of strawberries also requires the use of film packaging, which prevents drying. Without film packaging, storage at both 0°C and 3°C decreased fresh weight significantly, resulting in loss of commercial value. In contrast, storage in film packaging decreased weight reduction to <5%, even after 28 days cold storage.
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Affiliation(s)
- Atsushi Ikegaya
- Shizuoka Professional University Junior College of Agriculture Iwata Japan
- Shizuoka Prefectural Research Institute of Agriculture and Forestry Iwata Japan
- Graduate School of Integrated Pharmaceutical and Nutritional Sciences University of Shizuoka Shizuoka Japan
| | - Seiji Ohba
- Shizuoka Prefectural Research Institute of Agriculture and Forestry Iwata Japan
| | - Teruko Nakajima
- Shizuoka Prefectural Research Institute of Agriculture and Forestry Iwata Japan
| | - Tomoyasu Toyoizumi
- Shizuoka Prefectural Research Institute of Agriculture and Forestry Iwata Japan
| | - Seiko Ito
- Graduate School of Integrated Pharmaceutical and Nutritional Sciences University of Shizuoka Shizuoka Japan
- School of Food and Nutritional Sciences University of Shizuoka Shizuoka Japan
| | - Eiko Arai
- Graduate School of Integrated Pharmaceutical and Nutritional Sciences University of Shizuoka Shizuoka Japan
- School of Food and Nutritional Sciences University of Shizuoka Shizuoka Japan
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Ikegaya A, Toyoizumi T, Kosugi T, Arai E. Taste and palatability of strawberry jam as affected by organic acid content. International Journal of Food Properties 2020. [DOI: 10.1080/10942912.2020.1843484] [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] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Atsushi Ikegaya
- Department of Agricultural Production, Shizuoka Professional University Junior College of Agriculture, Iwata, Japan
- Shizuoka Prefectural Research Institute of Agriculture and Forestry, Iwata, Japan
- Graduate School of Integrated Pharmaceutical and Nutritional Sciences, University of Shizuoka, Suruga-ku, Shizuoka, Japan
| | - Tomoyasu Toyoizumi
- Shizuoka Prefectural Research Institute of Agriculture and Forestry, Iwata, Japan
| | - Toru Kosugi
- Shizuoka Prefectural Research Institute of Agriculture and Forestry, Iwata, Japan
| | - Eiko Arai
- Graduate School of Integrated Pharmaceutical and Nutritional Sciences, University of Shizuoka, Suruga-ku, Shizuoka, Japan
- School of Food and Nutritional Sciences, University of Shizuoka, Suruga-ku, Shizuoka, Japan
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9
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Ikegaya A, Toyoizumi T, Ohba S, Nakajima T, Kawata T, Ito S, Arai E. Effects of distribution of sugars and organic acids on the taste of strawberries. Food Sci Nutr 2019; 7:2419-2426. [PMID: 31367371 PMCID: PMC6657712 DOI: 10.1002/fsn3.1109] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 05/20/2019] [Accepted: 05/23/2019] [Indexed: 11/11/2022] Open
Abstract
The concentrations of sugars and organic acids as well as the total soluble solid (TSS) in different parts of the strawberry fruit were characterized. The data were used to create simulated fruit juice jellies, in order to clarify how the sugar and organic acid levels affect the taste. Such an approach eliminates the influence of external factors such as size, color, and texture when using real fruits in sensory evaluations. Further, the use of a jelly allowed us to simulate the concentration differences between various parts of the fruit. In the strawberry fruit, the sugar content is higher in the apex than in the peduncle; however, the level of organic acids is the same throughout. It was revealed that the sweetness and sourness in the apex and peduncle could be sufficiently recognized by humans as tastes. Also, a layered jelly sample replicating the sugar and acid distribution in real strawberry was perceived as less sweet and more sour, compared to a homogeneous one with the same overall composition. The likely reason is that the sourness in the peduncle is accentuated by the low TSS level, which decreases the TSS/total organic acid ratio that affects the sweetness/sour perceptions. Based on these results, factors for the appropriate sensory evaluation of fresh fruits in general were considered. Specifically, the distribution of sugars and organic acids in the fruit should be analyzed first, and bite-sized parts with concentrations close to the average provide the most accurate evaluation results.
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Affiliation(s)
- Atsushi Ikegaya
- Shizuoka Prefectural Research Institute of Agriculture and ForestryIwataJapan
- Graduate School of Integrated Pharmaceutical and Nutritional SciencesUniversity of ShizuokaShizuokaJapan
| | - Tomoyasu Toyoizumi
- Shizuoka Prefectural Research Institute of Agriculture and ForestryIwataJapan
| | - Seiji Ohba
- Shizuoka Prefectural Research Institute of Agriculture and ForestryIwataJapan
| | - Teruko Nakajima
- Shizuoka Prefectural Research Institute of Agriculture and ForestryIwataJapan
| | - Tomoaki Kawata
- Shizuoka Prefectural Research Institute of Agriculture and ForestryIwataJapan
| | - Seiko Ito
- Graduate School of Integrated Pharmaceutical and Nutritional SciencesUniversity of ShizuokaShizuokaJapan
- School of Food and Nutritional SciencesUniversity of ShizuokaShizuokaJapan
| | - Eiko Arai
- Graduate School of Integrated Pharmaceutical and Nutritional SciencesUniversity of ShizuokaShizuokaJapan
- School of Food and Nutritional SciencesUniversity of ShizuokaShizuokaJapan
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10
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Matsuya T, Nakamura Y, Teramoto Y, Shimizu A, Asami Y, Arai E, Yamamoto A. Image Gallery: Bowen's disease of a nail unit presenting with 'woodgrain appearance' - a new dermoscopic finding. Br J Dermatol 2019; 178:e66. [PMID: 29357581 DOI: 10.1111/bjd.16070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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)
- T Matsuya
- Department of Skin Oncology/Dermatology, Saitama Medical University International Medical Center, Saitama, Japan
| | - Y Nakamura
- Department of Skin Oncology/Dermatology, Saitama Medical University International Medical Center, Saitama, Japan
| | - Y Teramoto
- Department of Skin Oncology/Dermatology, Saitama Medical University International Medical Center, Saitama, Japan
| | - A Shimizu
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Y Asami
- Department of Skin Oncology/Dermatology, Saitama Medical University International Medical Center, Saitama, Japan
| | - E Arai
- Department of Pathology, Saitama Medical University International Medical Center, Saitama, Japan
| | - A Yamamoto
- Department of Skin Oncology/Dermatology, Saitama Medical University International Medical Center, Saitama, Japan
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11
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Arai E, Ishii K, Ishii H, Sagawa S, Makiyama N, Mizutani T, Omatsu T, Katayama Y, Kunimi Y, Inoue MN, Nakai M. An ascovirus isolated from Spodoptera litura (Noctuidae: Lepidoptera) transmitted by the generalist endoparasitoid Meteorus pulchricornis (Braconidae: Hymenoptera). J Gen Virol 2018. [DOI: 10.1099/jgv.0.001035] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Affiliation(s)
- Eiko Arai
- Tokyo University of Agriculture and Technology, Saiwai, Fuchu, Tokyo 183-8509, Japan
| | - Kazuo Ishii
- Biostatistics Center, University of Kurume, 67, Asahimachi, Kurume, Fukuoka 830-0011, Japan
| | - Hiroki Ishii
- Tokyo University of Agriculture and Technology, Saiwai, Fuchu, Tokyo 183-8509, Japan
| | - Shiori Sagawa
- Tokyo University of Agriculture and Technology, Saiwai, Fuchu, Tokyo 183-8509, Japan
| | - Nao Makiyama
- Tokyo University of Agriculture and Technology, Saiwai, Fuchu, Tokyo 183-8509, Japan
| | - Tetsuya Mizutani
- Tokyo University of Agriculture and Technology, Saiwai, Fuchu, Tokyo 183-8509, Japan
| | - Tsutomu Omatsu
- Tokyo University of Agriculture and Technology, Saiwai, Fuchu, Tokyo 183-8509, Japan
| | - Yukie Katayama
- Tokyo University of Agriculture and Technology, Saiwai, Fuchu, Tokyo 183-8509, Japan
| | - Yasuhisa Kunimi
- Tokyo University of Agriculture and Technology, Saiwai, Fuchu, Tokyo 183-8509, Japan
| | - Maki N. Inoue
- Tokyo University of Agriculture and Technology, Saiwai, Fuchu, Tokyo 183-8509, Japan
| | - Madoka Nakai
- Tokyo University of Agriculture and Technology, Saiwai, Fuchu, Tokyo 183-8509, Japan
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Hasegawa M, Arai E. Differential visual ornamentation between brood parasitic and parental cuckoos. J Evol Biol 2018; 31:446-456. [DOI: 10.1111/jeb.13240] [Citation(s) in RCA: 5] [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] [Received: 05/30/2017] [Accepted: 01/05/2018] [Indexed: 11/30/2022]
Affiliation(s)
- M. Hasegawa
- Department of Evolutionary Studies of Biosystems; Sokendai (the Graduate University for Advanced Studies); Hayama-machi Kanagawa Japan
| | - E. Arai
- Department of Evolutionary Studies of Biosystems; Sokendai (the Graduate University for Advanced Studies); Hayama-machi Kanagawa Japan
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Affiliation(s)
- E. Arai
- Kernforschungszentrum Karlsruhe Institut für Angewandte Kernphysik Karlsruhe, Germany
| | - H. Miessner
- Kernforschungszentrum Karlsruhe Institut für Angewandte Kernphysik Karlsruhe, Germany
| | - K. H. Beckurts
- Kernforschungszentrum Karlsruhe Institut für Angewandte Kernphysik Karlsruhe, Germany
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Murata M, Ito S, Arai E. Effect of Rice Variant on the Ease of Swallowing Blender-made Rice Gruel. FSTR 2016. [DOI: 10.3136/fstr.22.695] [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] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Maiha Murata
- Graduate School of Integrated Pharmaceutical and Nutritional Sciences, University of Shizuoka
| | - Seiko Ito
- School of Food and Nutritional Sciences, University of Shizuoka
| | - Eiko Arai
- School of Food and Nutritional Sciences, University of Shizuoka
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Bonisoli-Alquati A, Koyama K, Tedeschi DJ, Kitamura W, Sukuzi H, Ostermiller S, Arai E, Møller AP, Mousseau TA. Abundance and genetic damage of barn swallows from Fukushima. Sci Rep 2015; 5:9432. [PMID: 25838205 PMCID: PMC5381690 DOI: 10.1038/srep09432] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Accepted: 02/05/2015] [Indexed: 11/09/2022] Open
Abstract
A number of studies have assessed or modeled the distribution of the radionuclides released by the accident at the Fukushima-Daiichi Nuclear Power Plant (FDNPP). Few studies however have investigated its consequences for the local biota. We tested whether exposure of barn swallow (Hirundo rustica) nestlings to low dose ionizing radiation increased genetic damage to their peripheral erythrocytes. We estimated external radiation exposure by using thermoluminescent dosimeters, and by measuring radioactivity of the nest material. We then assessed DNA damage by means of the neutral comet assay. In addition, we conducted standard point-count censuses of barn swallows across environmental radiation levels, and estimated their abundance and local age ratio. Radioactivity of nest samples was in the range 479-143,349 Bq kg(-1), while external exposure varied between 0.15 and 4.9 mGy. Exposure to radioactive contamination did not correlate with higher genetic damage in nestlings. However, at higher levels of radioactive contamination the number of barn swallows declined and the fraction of juveniles decreased, indicating lower survival and lower reproduction and/or fledging rate. Thus, genetic damage to nestlings does not explain the decline of barn swallows in contaminated areas, and a proximate mechanism for the demographic effects documented here remains to be clarified.
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Affiliation(s)
- A Bonisoli-Alquati
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
| | - K Koyama
- Japan Bird Research Association, Fuchu, Tokyo, Japan
| | - D J Tedeschi
- Department of Physics and Astronomy, University of South Carolina, Columbia, SC 29208, USA
| | - W Kitamura
- Faculty of Environmental Studies, Tokyo City University, Yokohama City, Japan
| | - H Sukuzi
- Value Frontier Co., Ltd., Minato, Tokyo, Japan
| | - S Ostermiller
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
| | - E Arai
- Division of Ecology and Evolutionary Biology, Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - A P Møller
- Laboratoire d'Ecologie, Systématique et Evolution, CNRS UMR 8079, Université Paris-Sud, Bâtiment 362, F-91405 Orsay Cedex, France
| | - T A Mousseau
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA
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19
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Uchiyama T, Arai E, Arai M, Higuchi Y, Yamamoto T, Yamanaka Y, Aoyagi K, Shina A, Shibata-Yamaguchi C, Fuse M, Tateno H, Kamai T, Yamanishi T, Yokosuka O, Saeki N, Sakakibara R, Hirata K, Kuwabara S. Subthalamic deep brain stimulation can improve gastric emptying in Parkinson's disease. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.538] [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: 11/24/2022]
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20
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Arai E, Obikawa F, Suzuki K, Kainuma Y. Characteristics of Dried Powder from Rice Paste and Its Use in Bread Made With Dried Powder Substitute. J JPN SOC FOOD SCI 2013. [DOI: 10.3136/nskkk.60.425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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21
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Yoshida H, Ando A, Sho K, Akioka M, Kawai E, Arai E, Nishimura T, Shinde A, Masaki H, Takahashi K, Takagi M, Tanaka K. Anti-Aquaporin-4 Antibody-Positive Optic Neuritis Treated with Double-Filtration Plasmapheresis. J Ocul Pharmacol Ther 2010; 26:381-5. [DOI: 10.1089/jop.2009.0150] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Hideyuki Yoshida
- Department of Ophthalmology, Kansai Medical University Takii Hospital, Moriguchi, Japan
| | - Akira Ando
- Department of Ophthalmology, Kansai Medical University Takii Hospital, Moriguchi, Japan
| | - Kenichiro Sho
- Department of Ophthalmology, Kansai Medical University Takii Hospital, Moriguchi, Japan
| | - Masako Akioka
- Department of Ophthalmology, Kansai Medical University Takii Hospital, Moriguchi, Japan
| | - Emi Kawai
- Department of Ophthalmology, Kansai Medical University Takii Hospital, Moriguchi, Japan
| | - Eiko Arai
- Department of Ophthalmology, Kansai Medical University Takii Hospital, Moriguchi, Japan
| | - Tetsuya Nishimura
- Department of Ophthalmology, Kansai Medical University Takii Hospital, Moriguchi, Japan
| | - Akiyo Shinde
- Department of Neurology, Kansai Medical University Takii Hospital, Moriguchi, Japan
| | - Hiroya Masaki
- Department of Medicine II, Kansai Medical University Takii Hospital, Moriguchi, Japan
| | - Kanji Takahashi
- Department of Ophthalmology, Kansai Medical University Hirakata Hospitala, Hirakata, Japan
| | - Mineo Takagi
- Divisions of Ophthalmology and Visual Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Keiko Tanaka
- Department of Neurology, Kanazawa Medical University, Ishikawa, Japan
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Yokota K, Akiyama Y, Adachi D, Shindo Y, Yoshida Y, Miyoshi F, Arai E, Kuramochi A, Tsuchida T, Mimura T. Subcutaneous panniculitis-like T-cell lymphoma accompanied by Sjögren's syndrome. Scand J Rheumatol 2009; 38:494-5. [DOI: 10.3109/03009740903173355] [Citation(s) in RCA: 8] [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: 11/13/2022]
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23
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Ito H, Satsukawa M, Arai E, Sugiyama K, Sonoyama K, Kiriyama S, Morita T. Soluble fiber viscosity affects both goblet cell number and small intestine mucin secretion in rats. J Nutr 2009; 139:1640-7. [PMID: 19605529 DOI: 10.3945/jn.109.110171] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We examined the role of soluble fiber viscosity in small intestinal mucin secretion. Viscosities were defined as the area under the viscosity curve (VAUC). Rats were fed a control diet or diets containing konjac mannan (KM) [low, medium, or high molecular weight (LKM, MKM, HKM), respectively] at 50 g/kg diet for 10 d. Luminal mucin content and goblet cell number increased in proportion to the molecular weight of KM. Such effects with the HKM diet were nullified by the concurrent ingestion of 2 g cellulase/kg diet. Diet containing LKM, MKM, HKM, guar gums (high or low molecular weight; HGG, LGG), psyllium (PS), or pectin (PC) at 50 g/kg was fed to rats. Fibers with higher VAUC (MKM, HKM, HGG, and PS) increased goblet cell numbers, but not those with lower VAUC (LKM, LGG, and PC). Luminal mucins were greater in rats fed HKM, PC, and PS diets. Goblet cell numbers and VAUC were correlated (r = 0.98; P < 0.01). In rats fed the HKM diet, ileal Muc2 gene expression was not affected, but that of Muc3 was lower than in those fed the control diet, indicating that the increase in luminal mucins after ingestion of HKM diet occurred independently of enhanced Muc gene expression. An incorporation study of 5'-bromo-deoxyuridine (BrdU) showed the position of the uppermost-BrdU labeled cell along the villi was higher in rats fed the HKM diet than in those fed the control diet. The results suggest that soluble fibers, except PC, upregulate baseline secretion of luminal mucins by increasing goblet cell numbers in proportion to fiber VAUC.
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Affiliation(s)
- Hiroyuki Ito
- Graduate School of Science and Technology, Shizuoka University, 836 Ohya, Shizuoka 422-8529, Japan
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Kobayashi A, Ando A, Tagami N, Kitagawa M, Kawai E, Akioka M, Arai E, Nakatani T, Nakano S, Matsui Y, Matsumura M. Severe Optic Neuropathy Caused by Dichloromethane Inhalation. J Ocul Pharmacol Ther 2008; 24:607-12. [DOI: 10.1089/jop.2007.0100] [Citation(s) in RCA: 14] [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: 11/13/2022] Open
Affiliation(s)
- Atsushi Kobayashi
- Department of Ophthalmology, Kansai Medical University, Moriguchi, Japan
| | - Akira Ando
- Department of Ophthalmology, Kansai Medical University, Moriguchi, Japan
| | - Nobuko Tagami
- Department of Ophthalmology, Kansai Medical University, Moriguchi, Japan
| | - Masahiko Kitagawa
- Department of Ophthalmology, Kansai Medical University, Moriguchi, Japan
| | - Emi Kawai
- Department of Ophthalmology, Kansai Medical University, Moriguchi, Japan
| | - Masako Akioka
- Department of Ophthalmology, Kansai Medical University, Moriguchi, Japan
| | - Eiko Arai
- Department of Ophthalmology, Kansai Medical University, Moriguchi, Japan
| | - Toshio Nakatani
- Department of Emergency and Critical Care Medicine, Kansai Medical University, Moriguchi, Japan
| | - Satoshi Nakano
- Department of Neurology, Kansai Medical University, Moriguchi, Japan
| | - Yoshie Matsui
- Department of Ophthalmology, Kyoto-Katsura Hospital, Kyoto, Japan
| | - Miyo Matsumura
- Department of Ophthalmology, Kansai Medical University, Moriguchi, Japan
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Mitsuhashi T, Tsuchida T, Arai E, Ban S, Shimada T, Kuramochi A, Hirose T, Shimizu M. Lymphoepithelioma-Like Carcinoma of the Skin: A Case Report. J Cutan Pathol 2008. [DOI: 10.1111/j.0303-6987.2005.320ev.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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Jin L, Arai E, Tsuchida T, Ogawa F, Mitsuhashi T, Ban S, Shimizu Y, Hirose T, Shimizu M. Chronology of Cellular Blue Nevus. J Cutan Pathol 2008. [DOI: 10.1111/j.0303-6987.2005.320di.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Ogawa F, Arai E, Tsuchida T, Kuramochi A, Mitsuhashi T, Ban S, Shimizu Y, Hirose T, Shimizu M. Clinicopathological and Immunohistochemical Study of Eccrine Porocarcinoma (Malignant Eccrine Poroma). J Cutan Pathol 2008. [DOI: 10.1111/j.0303-6987.2005.320fb.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Arai E, Kuramochi A, Shimizu M, Hirose T. D2-40 Expression in Hemangiomas and Lymphangiomas: Special Reference to its Differential Utility Between Kaposiform Hemangioendothelioma and Acquired Tufted Angioma. J Cutan Pathol 2008. [DOI: 10.1111/j.0303-6987.2005.0320l.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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29
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Ogawa F, Tsuchida T, Arai E, Kuramochi A, Mitsuhashi T, Ban S, Shimizu Y, Hirose T, Shimizu M. Vesiculo-Bullous Dermatomyositis Associated with Malignant Lymphoma. J Cutan Pathol 2008. [DOI: 10.1111/j.0303-6987.2005.320fa.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Miwa H, Yokoyama T, Hori K, Sakagami T, Oshima T, Tomita T, Fujiwara Y, Saita H, Itou T, Ogawa H, Nakamura Y, Kishi K, Murayama Y, Hayashi E, Kobayashi K, Tano N, Matsushita K, Kawamoto H, Sawada Y, Ohkawa A, Arai E, Nagao K, Hamamoto N, Sugiyasu Y, Sugimoto K, Hara H, Tanimura M, Honda Y, Isozaki K, Noda S, Kubota S, Himeno S. Interobserver agreement in endoscopic evaluation of reflux esophagitis using a modified Los Angeles classification incorporating grades N and M: a validation study in a cohort of Japanese endoscopists. Dis Esophagus 2008; 21:355-63. [PMID: 18477259 DOI: 10.1111/j.1442-2050.2007.00788.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The Los Angeles classification system is the most widely employed criteria associated with the greatest interobserver agreement among endoscopists. In Japan, the Los Angeles classification system has been modified (modified LA system) to include minimal changes as a distinct grade of reflux esophagitis, rather than as auxiliary findings. This adds a further grading M defined as minimal changes to the mucosa, such as erythema and/or whitish turbidity. The modified LA system has come to be used widely in Japan. However, there have been few reports to date that have evaluated the interobserver agreement in diagnosis when using the modified LA classification system incorporating these minimal changes as an additional grade. A total of 100 endoscopists from university hospitals and community hospitals, as well as private practices in the Osaka-Kobe area participated in the study. A total of 30 video clips of 30-40 seconds duration, mostly showing the esophagocardiac junction, were created and shown to 100 endoscopists using a video projector. The participating endoscopists completed a questionnaire regarding their clinical experience and rated the reflux esophagitis as shown in the video clips using the modified LA classification system. Agreement was assessed employing kappa (kappa) statistics for multiple raters. The kappa-value for all 91 endoscopists was 0.094, with a standard error of 0.002, indicating poor interobserver agreement. The endoscopists showed the best agreement on diagnosing grade A esophagitis (0.167), and the poorest agreement when diagnosing grade M esophagitis (0.033). The kappa-values for the diagnoses of grades N, M, and A esophagitis on identical video pairs were 0.275-0.315, with a standard error of 0.083-0.091, indicating fair intraobserver reproducibility among the endoscopists. The study results consistently indicate poor agreement regarding diagnoses as well as fair reproducibility of these diagnoses by endoscopists using the modified LA classification system, regardless of age, type of practice, past endoscopic experience, or current workload. However, grade M reflux esophagitis may not necessarily be irrelevant, as it may suggest an early form of reflux disease or an entirely new form of reflux esophagitis. Further research is required to elucidate the pathophysiological basis of minimal change esophagitis.
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Affiliation(s)
- H Miwa
- Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan.
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31
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Takeishi M, Mimori A, Adachi D, Arai E, Suzuki T. [Case of fulminant mixed cryoglobulinemia developing after atrial myxoma resection]. ACTA ACUST UNITED AC 2006; 24:168-74. [PMID: 16578968 DOI: 10.2177/jsci.24.168] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A 63-year-old man, with a 13-year history of asymptomatic proteinuria, was diagnosed with left atrial myxoma at the onset of heart failure. After resection of the tumor by hypothermal surgery, the patient developed fever, renal failure and skin rash. The diagnosis was type II mixed cryoglobulinemia accompanied by an IgMlambda clone with high titers of rheumatoid factor activity and polyclonal IgG. Treatment with high doses of steroids and plasmapheresis was ineffective, and the patient died of colon necrosis due to thrombotic occlusion in the supra-mesenteric arteries. Although the patient had suffered from sporadic Raynaud's phenomenon and purpura of the lower extremities from the age of 60 years, cryoglobulinemia was not suspected before surgery because of the atrial myxoma. Thus, we suggest that it is important to perform laboratory tests for cryoproteins before hypothermal surgery.
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Affiliation(s)
- M Takeishi
- Division of Rheumatology, Saitama Medical School
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Ishizawa K, Komori T, Shimada T, Arai E, Imanaka K, Kyo S, Hirose T. Hemodynamic infarction of the spinal cord: involvement of the gray matter plus the border-zone between the central and peripheral arteries. Spinal Cord 2005; 43:306-10. [PMID: 15597113 DOI: 10.1038/sj.sc.3101671] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVE Hemodynamic infarction of the spinal cord that affected an 81-year-old female having a dissecting aortic aneurysm is presented. During the graft replacement operation, systemic hypotension occurred and the patient was subsequently complicated with paraplegia of the lower limbs. The patient died 2 weeks after the surgery due to gastrointestinal bleeding. An autopsy, which did not include the brain, was performed and the spinal cord was sampled. The aim of this report is to describe the pathologic profile of the spinal cord of the patient, and to gain insight into the pathogenesis of the lesion. METHODS Histochemical and immunohistochemical methods were employed to study the spinal cord ranging from the lower thoracic to sacral segments. RESULTS The whole central areas of the spinal cord showed coagulation and/or liquefaction necroses, while the white matter on the circumference of the cord remained unaffected, thus exhibiting a 'ring-like' appearance. CONCLUSION This case is an example of hemodynamic infarction of the spinal cord involving the gray matter that is supplied by the central artery, plus the border-zone that is supplied by both the central and peripheral arteries. The former is probably associated with selective vulnerability of the gray matter to ischemia, while the latter is probably associated with intrinsic vulnerability of the border-zone to systemic hypotension or low blood-flow states.
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Affiliation(s)
- K Ishizawa
- Department of Pathology, Saitama Medical School, Saitama, Japan
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33
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Hara Y, Kobayashi K, Yamamoto T, Arai E, Matsuda H. The Effect of Electrolyzed Water on Production of Soybean Functional Low-molecular Weight Peptide by an Aspergillus oryzae Protease. J JPN SOC FOOD SCI 2003. [DOI: 10.3136/nskkk.50.419] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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34
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Itani T, Tamaki M, Arai E, Horino T. Distribution of amylose, nitrogen, and minerals in rice kernels with various characters. J Agric Food Chem 2002; 50:5326-32. [PMID: 12207469 DOI: 10.1021/jf020073x] [Citation(s) in RCA: 75] [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] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The distribution of chemical constituents is known not to be even within a rice kernel. To improve the eating quality of rice or to give it some special traits by adjusting the milling intensity, we investigated the distribution of amylose, nitrogen (N), and specific minerals (P, K, Mg, Ca, and Mn) in rice kernels of 11 cultivars with various characteristics cultivated under similar conditions. The distributions of these constituents were determined using flour samples prepared consecutively by abrasive milling from the outer to the inner portions of hulled rice. In all the cultivars tested, N and the minerals were found to be more abundant in the outer than in the inner portion, but amylose was rich in the inner portion. P, Mg, K, and Mn were extremely rich in the outer portion, while N and Ca were only relatively rich there. Koshihikari, which is the most popular cultivar in Japan because of its excellent eating quality, showed the highest Mg/K ratio in the outermost portion of polished rice. The color of flour samples became pure white going from outside portions toward the center of the kernel, even if the sample was from red rice or purple-black rice because only the surface of hulled rice contains pigments. These findings suggest that the outer portion contains various compounds other than starch and the inner portion contains relatively pure starch. Rice palatability and other characteristics can be improved through controlling the degree of milling using the biased distribution of chemical constituents within a rice kernel.
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Affiliation(s)
- Tomio Itani
- School of Bioresources, Hiroshima Prefectural University, Shobara, Hiroshima 727-0023, Japan.
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35
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36
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Nakano M, Kondoh T, Igarashi J, Kadowaki A, Arai E. A case of chronic expanding hematoma in the tensor fascia lata. Dermatol Online J 2001; 7:6. [PMID: 12165222] [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: 02/26/2023] Open
Abstract
We describe a patient in whom a chronic expanding hematoma was pathologically confirmed by examination of the resected specimen. It developed gradually in the left lateral thigh, which had been bruised 8 months before, but had produced no mass-related symptoms initially. Computed tomography (CT) showed the mass to be homogeneous with capsule formation, whereas ultrasonography showed it to resemble a multilocular cyst. The lesion was treated by complete excision of a perifascial mass. Grossly, a well-circumscribed, fusiform mass with a soft cystic center and a fibrous pseudocapsule was observed. Histologically, the mass was composed of necrotic debris, fibrin and blood clots. This was surrounded by a rim of hyalinized fibrous tissue with a chronic inflammatory infiltrate and granulation tissue with sprouting new capillaries. CT was unable to discriminate the chronic expanding hematoma from other soft tissue masses, ultrasonography being needed to reveal its characteristics in this case.
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Affiliation(s)
- M Nakano
- Division of Plastic and Reconstructive Surgery, Organized Center of Clinical Medicine, International University of Health and Welfare
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37
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Kambe M, Arai E, Suzuki M, Tokuyama H, Fukuyama T. Intramolecular 1,3-dipolar cycloaddition strategy for enantioselective synthesis of FR-900482 analogues. Org Lett 2001; 3:2575-8. [PMID: 11483064 DOI: 10.1021/ol016243t] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] Enantioselective synthesis of FR-900482 analogues is described. The key reaction of the synthesis is intramolecular 1,3-dipolar cycloaddition of a highly functionalized nitrile oxide with complete stereo- and regioselectivities to construct the eight-membered benzazocine ring.
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Affiliation(s)
- M Kambe
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, CREST, The Japan Science and Technology Corporation, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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38
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Arai E, Okubo H, Tsuchida T, Kitamura K, Katayama I. Pseudolymphomatous folliculitis: a clinicopathologic study of 15 cases of cutaneous pseudolymphoma with follicular invasion. Am J Surg Pathol 1999; 23:1313-9. [PMID: 10554999 DOI: 10.1097/00000478-199911000-00001] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We report the clinical, histopathologic, and immunohistologic features of 15 cases of pseudolymphomatous folliculitis (PLF). The patients comprised seven males and eight females (mean age, 38.6 years; age range, 2-67 years). All patients had dome-shaped or flat-elevated nodules suggestive of cutaneous lymphoid hyperplasias (CLHs). The lesions were solitary in all 15 cases, except in one case with duplex lesions. All lesions were located on the face and measured less than 1.5 cm. In 14 cases with one lesion each, five lesions showed rapid regression after incisional biopsy, whereas the remaining nine underwent excisional biopsy. In the case with duplex lesions, one regressed spontaneously after excisional biopsy of the other. Histopathologically, all PLFs showed dense lymphocytic infiltrates from the dermis to the subcutis simulating cutaneous lymphomas. The walls of hair follicles in all cases were enlarged and irregularly deformed with their epithelium blurred by lymphocytic infiltrates; we called this change "activation" of hair follicles. In nine cases, many atypical lymphocytes were intermingled; three of these cases had been misdiagnosed as cutaneous T-cell lymphoma at other institutions. Immunohistologically, 10 and 5 cases showed predominantly B cells and predominantly T cells, respectively. Remarkably, all lesions showed increased numbers of perifollicular histiocytes expressing anti-S-100 protein and CD1a, and seven lesions showed histiocytes in aggregates. We conclude that PLF is a subset of CLH with characteristic clinical and pathologic features showing perifollicular clustering of T-cell-associated dendritic cells with activation of pilosebaceous units. PLF is an entity to be differentiated from malignant lymphomas and other cutaneous pseudolymphomas.
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Affiliation(s)
- E Arai
- Department of Pathology, Saitama Medical School, Japan
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39
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Iwamura H, Horii Y, Arai E. [Small cell neuroendocrine carcinoma of the urinary bladder: a case report]. Hinyokika Kiyo 1999; 45:641-4. [PMID: 10540713] [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: 02/14/2023]
Abstract
A 60-year-old male was referred to our hospital with a complaint of asymptomatic gross hematuria. Cystoscopic examination revealed a non-papillary broad-based tumor on the posterior wall of the urinary bladder. Computed tomography revealed no evidence of metastases. Transurethral resection of bladder tumor (TUR-BT) was performed and muscle invasion was detected by histological examination of the specimen. Total cystectomy and ileal conduit formation were performed at the preoperative diagnosis of T2-3N0M0. Hematoxylin-eosin staining of the specimen revealed small cancer cells with hyperchromatic nucleus and scanty cytoplasm growing in the muscle layer of the urinary bladder and in the left obturator lymph nodes. Immunohistochemistry for neurospecific enolase showed diffuse staining in the cytoplasm of cancer cells, and ultrastructural study showed dense core granules. From these findings, the patient was diagnosed with small cell neuroendocrine carcinoma of the urinary bladder at the stage of pT3bpN1M0. Three courses of adjuvant chemotherapies with cis-platinum (CDDP) and etoposide were administered. The patient is still alive with no evidence of any recurrence at 22 months after the operation. This case suggests that treatment with combined total cystectomy and adjuvant CDDP and etoposide chemotherapies is effective against neuroendocrine carcinoma of the urinary bladder with regional lymph node metastases.
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Affiliation(s)
- H Iwamura
- Department of Urology, Nara Social Insurance Hospital
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40
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Iwamura H, Horii Y, Tokuchi H, Arai E. [A case of genital Paget's disease with severe dermal invasion and early dissemination]. Hinyokika Kiyo 1999; 45:281-4. [PMID: 10363152] [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: 02/12/2023]
Abstract
A 65-year-old man was referred to our hospital with a complaint of a scrotal mass which he first noticed 8 months ago. The mass was resected saving genital organs. Pathological diagnosis was extramammary Paget's disease with severe dermal invasion and many nuclear mitoses. The tumor was 15 mm in diameter, and 18 mm in thickness. The bilateral inguinal lymph nodes were dissected and multiple metastases were revealed in the right specimen. Since paraaortic lymph node metastases were detected later 5 cycles of chemotherapy consisting of cyclophosphamide, adriamycin and cisplatin (CAP) followed by radiation therapy were performed. However, only a partial response could be obtained, and multiple brain metastases were revealed on computed tomographic scan. He died 22 months after discovery of this disease. Since extramammary Paget's disease tends to grow slowly and horizontally, cases with such severe dermal invasion and early dissemination as in our case are unusual.
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Affiliation(s)
- H Iwamura
- Department of Urology, Nara Social Insurance Hospital
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41
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Yoneya T, Yamada Y, Kakeda M, Osawa M, Arai E, Hayashi K, Nishi N, Inoue H, Nishikawa M. Molecular cloning of a novel receptor-type protein tyrosine phosphatase from murine fetal liver. Gene X 1997; 194:241-7. [PMID: 9272866 DOI: 10.1016/s0378-1119(97)00174-1] [Citation(s) in RCA: 4] [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: 02/05/2023] Open
Abstract
A cDNA fragment encoding a novel tyrosine phosphatase (PTPase), termed ptpf, was isolated from day 11.5 mouse fetal liver using reverse transcription-polymerase chain reaction (RT-PCR) with degenerate primers. The 5.5-kb cDNA encoding the complete coding region was isolated from an adult mouse kidney cDNA library. This cDNA contained a single open reading frame (ORF) encoding a predicted 1436-amino-acid protein with a molecular mass of 161,150 Da. Sequence analysis revealed that PTPf was homologous to PTPmu and PTPkappa, and a putative receptor-type PTPase. Northern blotting analysis of adult mouse mRNA indicated the existence of four major ptpf transcripts of approximately 10, 6, 3 and 2.7 kb, and these transcripts were expressed in a tissue-specific manner. During embryogenesis, only the 6-kb transcript was detected.
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Affiliation(s)
- T Yoneya
- Pharmaceutical Research Laboratory, Kirin Brewery Co. Ltd, Gunma, Japan
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42
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Abstract
Apoptosis was suspected to play a significant role in spontaneous regression of skin lesions in four cases of peripheral T-cell lymphoma arising in the skin or subcutis. All of the patients had skin tumors with ulcer formation, but no metastasis to the lymph nodes or viscera. Biopsy showed a sea of CD3-positive lymphoma cells involving the dermis to the subcutis with scattered foci of coagulative necrosis. In the zone of incipient necrosis surrounding the core of coagulative necrosis, frequent apoptotic bodies were identified by electron microscopy (EM), and DNA strand breaks were detected in 34% to 51% (mean, 42%) of lymphoma cells by the TdT-mediated deoxyuridine triphosphate (dUTP)-biotin nick end-labeling (TUNEL). As for the pathogenesis of coagulative necrosis, ischemic necrosis attributable to lymphocytic vasculitis appeared unlikely, because necrotic foci were devoid of neutrophils and had no relation to vascular distribution. Primary cataclysmic apoptosis appeared more likely, but its pathogenetic role could not be established, because EM and TUNEL could not be applied to the core of the debris-ridden coagulative necrosis. Although these cases had been classified as pseudolymphomas because they were histologically malignant but clinically benign, they were in fact true lymphomas characterized by extensive coagulative necrosis with a high rate of apoptosis demonstrable in the zone of incipient necrosis.
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Affiliation(s)
- E Arai
- First Department of Pathology, Saitama Medical School, Iruma-gun, Japan
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44
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Takahashi T, Tamaki M, Arai E, Sanada S. [Two cases of cavity formation in prostatic urethra after transurethral microwave thermotherapy (TUMT) with Prostatron]. Hinyokika Kiyo 1995; 41:399-402. [PMID: 7541182] [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: 01/25/2023]
Abstract
The Prostatron device, developed by Dr. Devonec, provides microwave heating of the prostate and simultaneous conductive cooling of the urethra. Treatment with Prostatron (transurethral microwave thermotherapy: TUMT) of BPH can be performed in a single session, and the urethra, the rectum and the surrounding tissue are protected with the temperature monitoring system. TUMT with Prostatron may be more suitable for a small adenoma with mild symptoms than a large adenoma with severe symptoms, because objective improvement is rarely observed compared with subjective improvement. We have treated 40 cases of BPH with Prostatron (Prostasoft 2, max. energy: 50 watt, max. urethral temperature: 44.5 degrees C, max. rectal temperature: 42.5 degrees C) since March 1993. Among them, there were 2 cases of large cavity formation involving the prostatic urethra. With cavity formation, TUMT may have its place in the treatment of a large adenoma with severe urinary symptoms, but loses its advantage in the prevention of persistent urinary infection and retrograde ejaculation, especially in the treatment of a small adenoma in a younger patient with mild urinary symptoms. It is unknown why such cavity formation occurred only in 2 patients among 40 equally treated cases, but the causes of cavity formation and safety of TUMT should be evaluated again, even though no injury to the rectum and the external urethral sphincter were detected. We report these 2 cases, and causes of cavity formation and discuss the prospects of TUMT.
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Affiliation(s)
- T Takahashi
- Department of Urology, Kansai Electric Power Hospital
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45
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Abstract
Neurofibromatosis 2 (NF2) is an autosomal dominant disorder characterized by the occurrence of bilateral acoustic neuromas, as well as meningiomas and schwannomas. The gene locus for NF2 resides on chromosome 22q12 and has been cloned recently. Neurilemmomatosis is characterized by multiple cutaneous and spinal neurilemmomas without other signs of NF1 or NF2. Many cases with this disorder include the diagnosis of neurofibromatosis or other rare diseases unexplained by current nosology. In this study, we analyzed the peripheral leukocytes and tissue from cutaneous neurilemmomas of seven patients with neurilemmomatosis using DNA markers for different regions of chromosome 22. We detected allelic losses in three of seven tumors from seven patients with a probe for the NF2 region of the long arm of chromosome 22 and the germ-line mutations in two of three tumors from the same three patients. Mutations in the NF2 gene were a deletion from at least codon 334 to 579 and G insertion at codon 42. We conclude that the neurilemmomatosis locus lies within the NF2 region and that these diseases might be identical.
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Affiliation(s)
- M Honda
- Department of Dermatology, Jikei University School of Medicine, Tokyo, Japan
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46
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Arai E, Nishimura S, Tamura K, Kida M, Ikeuchi T. Chromosome 1q terminal deletion resulting from de novo translocation with an acrocentric chromosome. Jpn J Hum Genet 1994; 39:433-7. [PMID: 7873756 DOI: 10.1007/bf01892389] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Distal deletion of chromosome 1q has been reported in nearly 30 patients, all being associated with a deletion ranging from the 1q42 or q43 band to 1qter region. Here, we describe a girl with 1q terminal deletion resulting from an unbalanced de novo translocation t(1;D or G)(q44;p11), as revealed by the presence of a satellited feature and an NOR-stained region at the tip of 1q. We suggest that most of the phenotypic abnormalities seen in patients with 1q distal deletion are attributable to the monosomy for band 1q44.
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Affiliation(s)
- E Arai
- Department of Cytogenetics, Tokyo Medical and Dental University, Japan
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47
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Kato S, Nakagawa T, Kobayashi H, Arai E, Isetani K. Septum formation of the common hepatic duct associated with an anomalous junction of the pancreaticobiliary ductal system and gallbladder cancer: report of a case. Surg Today 1994; 24:534-7. [PMID: 7919737 DOI: 10.1007/bf01884574] [Citation(s) in RCA: 12] [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: 01/27/2023]
Abstract
We herein describe a 48-year-old woman who developed a septum formation of the bile duct combined with an anomalous arrangement of the pancreaticobiliary ductal system in conjunction with gallbladder cancer. A preoperative endoscopic retrograde cholangiogram demonstrated a filling defect in the common hepatic duct which was misdiagnosed to be an elevated lesion. Further exploration revealed a septum formation of the bile duct along with gallbladder cancer. A resection of the dilated bile duct and gallbladder along with a dissection of the regional lymph nodes was performed. A histological evaluation showed the septum to consist of a normal bile duct wall while the tumor in the gallbladder was poorly differentiated adenocarcinoma. The patient made an uneventful recovery. The septum formation was presumed to be congenital in origin.
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Affiliation(s)
- S Kato
- Department of Surgery, Yukokai General Hospital, Osaka, Japan
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48
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Arai E, Ikeuchi T, Nakamura Y. Characterization of the translocation breakpoint on chromosome 22q12.2 in a patient with neurofibromatosis type 2 (NF2). Hum Mol Genet 1994; 3:937-9. [PMID: 7951241 DOI: 10.1093/hmg/3.6.937] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
We previously described a patient with neurofibromatosis type 2 (NF2) who showed a constitutional balanced translocation, t(4;22). To characterize the breakpoint on chromosome 22 in this patient in relation to a candidate gene (NF2) responsible for NF2, we analyzed DNAs from this patient and her parents using parts of NF2 cDNA as probes. Southern analyses and DNA sequencing revealed that the chromosome 22 breakpoint in this patient lies within the intron between exons 14 and 15 of NF2. The results lend support to the conclusion that NF2 is the gene responsible for the CNS form of neurofibromatosis.
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Affiliation(s)
- E Arai
- Department of Biochemistry, Cancer Institute, Tokyo, Japan
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49
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Arai E, Chow KC, Li CY, Tokunaga M, Katayama I. Differentiation between cutaneous form of adult T cell leukemia/lymphoma and cutaneous T cell lymphoma by in situ hybridization using a human T cell leukemia virus-1 DNA probe. Am J Pathol 1994; 144:15-20. [PMID: 8291605 PMCID: PMC1887115] [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: 01/29/2023]
Abstract
Adult T cell leukemia/lymphoma (ATLL) shares overlapping clinicopathological features with cutaneous T cell lymphoma (CTCL), requiring detection of monoclonal integration of proviral DNA of type 1 human T cell leukemia virus for its differential diagnosis from the latter. We applied in situ hybridization (ISH) and polymerase chain reaction (PCR) to paraffin sections from 63 Japanese autopsy cases that had been diagnosed as CTCL in earlier years when ATLL was still not widely known. Eleven and two cases with confirmed diagnoses of ATLL and CTCL served as positive and negative controls, respectively. It was found that ISH was positive in 7 of 63 test cases and 10 of 11 positive controls, whereas PCR was positive in none of the test cases and eight of the positive control cases. Two negative controls were negative for both ISH and PCR. We conclude that ISH is superior to PCR for detecting type 1 human T cell leukemia virus proviral DNA on paraffin sections and that the ISH method is useful for differentiating CTCL from the cutaneous form of ATLL.
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Affiliation(s)
- E Arai
- Department of Pathology, Saitama Medical School, Japan
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50
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Abstract
A 61-year-old man presented with a skin tumour in the right axilla of 2 months' duration. An excision biopsy revealed a malignant lymphoma, of diffuse mixed small and large cell type, morphologically suggestive of T-cell lymphoma, but shown to be a T-cell-rich B-cell lymphoma by subsequent immunohistochemical staining. A review of the literature revealed 47 cases of T-cell-rich B-cell lymphoma with descriptions of primary sites, 35 nodal and 12 extranodal, of which only one was a cutaneous primary.
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Affiliation(s)
- E Arai
- First Department of Pathology, Saitama Medical School, Japan
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