著者

Yasumasa Naka Masaya Tamura

出版者

The Institute of Electronics, Information and Communication Engineers

雑誌

IEICE Communications Express (ISSN:21870136)

巻号頁・発行日

vol.9, no.10, pp.457-463, 2020-10-01 (Released:2020-10-01)

参考文献数

8

被引用文献数

1

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Capacitive wireless power transfer is performed using large electrodes or using a medium having high relative permittivity such as water. The transfer efficiency demonstrates a pronounced change with frequency. A lumped-constant equivalent circuit with parasitic elements represents the change. However, a relationship between conditions for generating minimum/maximum values of the transfer efficiency and structural parameters of the electrodes in the coupler has not clarified. In this study, an equivalent circuit is proposed using a distributed-constant circuit. We converted the lumped-constant circuit into two open-ended directional couplers. From the result, we derived the conditions for generating the minimum and maximum values of the voltage input/output ratio. The efficiencies calculated by the distributed-constant circuit and electromagnetic simulation were in good agreement.

著者

和田 昌也 Masaya Wada

出版者

同志社大学グローバル・スタディーズ学会

雑誌

同志社グローバル・スタディーズ = Journal of global studies (ISSN:21859396)

巻号頁・発行日

vol.10, pp.87-103, 2019

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論文

著者

Shinya - Imai Takuya - Hamada Masaya - Hamada Takanori - Shirokura Iriya - Muneta Kuniyuki - Kakushima Tetsuya - Tatsumi Shigetaka - Tomiya Kazuo - Tsutsui Hitoshi Wakabayashi

雑誌

2020 International Conference on Solid State Devices and Materials

巻号頁・発行日

2020-08-31

著者

Akira Funada Yoshikazu Goto Hayato Tada Ryota Teramoto Masaya Shimojima Kenshi Hayashi Masakazu Yamagishi

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

pp.CJ-16-1251, (Released:2017-02-11)

参考文献数

28

被引用文献数

5 7

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Background:The appropriate duration of prehospital cardiopulmonary resuscitation (CPR)administered by emergency medical service (EMS) providers for patients with out-of-hospital cardiac arrest (OHCA) necessary to achieve 1-month survival with favorable neurological outcome (Cerebral Performance Category 1 or 2, CPC 1–2) is unclear and could differ by age.Methods and Results:We analyzed the records of 35,709 adult OHCA patients with return of spontaneous circulation (ROSC) before hospital arrival in a prospectively recorded Japanese registry between 2011 and 2014. The CPR duration was defined as the time from CPR initiation by EMS providers to prehospital ROSC. The rate of 1-month CPC 1–2 was 21.4% (7,650/35,709). The CPR duration was independently and inversely associated with 1-month CPC 1–2 (adjusted odds ratio, 0.93 per 1-min increment; 95% confidence interval, 0.93–0.94). The CPR duration increased with age (P<0.001). However, the CPR duration beyond which the proportion of OHCA patients with 1-month CPC 1–2 decreased to <1% declined with age: 28 min for patients aged 18–64 years, 25 min for 65–74 years, 23 min for 75–84 years, 20 min for 85–94 years, and 18 min for ≥95 years.Conclusions:In patients who achieved prehospital ROSC after OHCA, the duration of CPR administered by EMS providers necessary to achieve 1-month CPC 1–2 varied by age.

著者

Yuki NISHIMURA Takeshi SASAKI Toru YOSHIKAWA Tomohide KUBO Tomoaki MATSUO Xinxin LIU Masaya TAKAHASHI

出版者

National Institute of Occupational Safety and Health

雑誌

Industrial Health (ISSN:00198366)

巻号頁・発行日

pp.2020-0058, (Released:2020-07-01)

被引用文献数

5

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While a number of work-related events have been proposed as risk factors for depression, a majority of studies have focused only on a few events in a single study. Therefore, we conducted a web-based longitudinal study to comprehensively investigate the impact of various work-related events on depressive symptoms. Ten thousand Japanese workers representing the Japanese working population were recruited online and questioned on their experiences of 36 work-related events in the past year. Their depressive symptoms were also assessed based on the Center for Epidemiologic Studies Depression Scale. Two years later, 3,098 participants responded to a follow-up study. By excluding 1,030 participants who were classified as being depressed in the baseline survey, data of 2,068 participants were analyzed. Odds ratios (OR) were calculated using multivariate logistic regression to assess the effect of work-related events on depressive symptoms. Eighteen events were found to be risk factors and were sorted into four types as follows: experience of an accident or disaster (OR: 4.78–7.67), excessive responsibility (OR: 3.01–3.62), drastic change in workstyle or workload (OR: 2.38–3.08), and interpersonal conflict (OR: 2.41–11.16). The current results, including magnitude relationship of ORs, should be utilized for promoting psychosocially healthy work environment.

著者

俵 京佑 針田 聖平 河尻 翔太 松下 将典 吉井 健敏 太田 佳 古賀 将哉 渡邉 輔祐太 菊谷 侑平 林 雄希 小池 毅彦 新谷 勇介 谷津 陽一 河合 誠之 松永 三郎 Tawara Kyosuke Harita Shohei Kawajiri Shota Matsushita Masanori Yoshii Taketoshi Ohta Kei Koga Masaya Watanabe Futa Kikuya Yuhei Hayashi Yuki Koike Takehiko Shintani Yusuke Yatsu Yoichi Kawai Nobuyuki Matunaga Saburo

出版者

宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)

雑誌

第17回宇宙科学シンポジウム 講演集 = Proceedings of the 17th Space Science Symposium

巻号頁・発行日

2017-01

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第17回宇宙科学シンポジウム (2017年1月5日-6日. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)相模原キャンパス), 相模原市, 神奈川県

著者

吉川 雅也 Masaya Yoshikawa

出版者

関西外国語大学・関西外国語大学短期大学部

雑誌

研究論集 = Journal of inquiry and research (ISSN:03881067)

巻号頁・発行日

no.111, pp.193-211, 2020-03

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本研究は有機的統合理論における自律-他律パラダイムの観点から主体性概念の構造的理解を試みるものである。主体性という言葉は教育や産業の現場でも頻繁に使用されるが自律や自発などの類語が存在するうえ、それらが何を意味するのか定義が一定しない。自ら考えて行動しても他者の期待に沿わなければ主体的との評価がなされないこともある。本研究は文部科学省「生徒指導提要」の分類を出発点とし、モチベーション研究における有機的統合理論の枠組みを用いて主体性および類語の整理を行った。その結果、自ら考え行動するだけでは自発・自主であり、計画性が認められると自律となり、自らの考えからではなく他者の期待や組織のルールに沿ったことを自らの意志で行うことが主体性であることがわかった。これは有機的統合理論では社会化された外発的動機づけに相当し、主体性が自律的ながら外部から動機づけられた手段性を有するものであることを意味している。

著者

Masaya MIYAZONO Katsunori TORII Mayu YAMAMOTO Junko TANAKA Masahiro TANAKA

出版者

Osaka Odontological Society

雑誌

Journal of Osaka Dental University (ISSN:04752058)

巻号頁・発行日

vol.53, no.2, pp.179-186, 2019-10-25 (Released:2020-01-25)

参考文献数

22

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We attempted to clarify how the impressions imparted on observers are affected by smiles with exposed teeth. Sixty young adults participated in the study, 23 men and 37 women, who had a mean age of 23±2 years. Impressions of composite (average) male and female faces were rated to eliminate individual bias. Ten facial photos were processed for each of 10 adult males with a mean age of 25±2 years and 10 adult females with a mean age of 26±1 years. Three stimulus images were used for each gender: a neutral face (teeth hidden), a smiling face (teeth hidden), and a grinning face (teeth exposed). The average male faces were rated by 30 subjects and the average female faces by the other 30. The semantic differential method was used to rate the impressions. Group ratings were then subjected to factor analysis. The two common factors having the greatest explanatory power were: “Sociable" and “Active" for the male stimulus images and “Friendly" and “Elegant" for the females. Significant differences between stimuli were observed for scores on both the first and second factors. In all cases, the grin was rated highest, followed by the smile and neutral face. We found that when smiling with the teeth exposed, male faces give a strong impression of sociability and activity, while females give a strong impression of friendliness and elegance. (J Osaka Dent Univ 2019; 53: 179‐186)

著者

Masaya IGASE Yuki MORINAGA Masahiro KATO Toshihiro TSUKUI Yusuke SAKAI Masaru OKUDA Takuya MIZUNO

出版者

JAPANESE SOCIETY OF VETERINARY SCIENCE

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

vol.82, no.4, pp.483-487, 2020 (Released:2020-04-15)

参考文献数

13

被引用文献数

1

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DEP domain-containing 1B (DEPDC1B) is involved in the regulation of cell de-adhesion and actin cytoskeleton activity during the G2/M transition of the cell cycle, and its overexpression has been proven to be associated with cancer progression in several human cancers. Canine DEPDC1B was identified as a gene that was overexpressed in canine lymphoma tissues in our previous study. However, in dogs, the protein expression of DEPDC1B remains to be determined due to the lack of a specific monoclonal antibody. Here, we developed rat monoclonal antibodies against canine DEPDC1B and characterized their applicability for immunodetection assays. Our findings demonstrated that these antibodies are functional and can be important tools to investigate the precise role of DEPDC1B in canine tumors.

著者

諏訪 僚太 中村 崇 井口 亮 中村 雅子 守田 昌哉 加藤 亜記 藤田 和彦 井上 麻夕里 酒井 一彦 鈴木 淳 小池 勲夫 白山 義久 野尻 幸宏 Ryota Suwa Takashi Nakamura Akira Iguchi Masako Nakamura Masaya Morita Aki Kato Kazuhiko Fujita Mayuri Inoue Kazuhiko Sakai Atsushi Suzuki Isao Koike Yoshihisa Sirayama Yukihiro Nojiri 京都大学フィールド科学教育研究センター瀬戸臨海実験所 九州大学付属天草臨海実験所 琉球大学熱帯生物圏研究センター瀬底研究施設 琉球大学熱帯生物圏研究センター瀬底研究施設 琉球大学熱帯生物圏研究センター瀬底研究施設 琉球大学大学院理工学研究科 琉球大学大学院理工学研究科 東京大学海洋研究所 琉球大学熱帯生物圏研究センター瀬底研究施設 産業技術総合研究所 琉球大学 京都大学フィールド科学教育研究センター瀬戸臨海実験所 国立環境研究所地球環境研究センター Seto Marine Biological Laboratory Field Science Education and Research Center Kyoto University Amakusa Marine Laboratory Kyusyu University Sesoko Station Tropical Biosphere Research Center University of the Ryukyus Sesoko Station Tropical Biosphere Research Center University of the Ryukyus Sesoko Station Tropical Biosphere Research Center University of the Ryukyus Graduate School of Engineering and Science University of the Ryukyus Graduate School of Engineering and Science University of the Ryukyus Ocean Research Institute The University of Tokyo Sesoko Station Tropical Biosphere Research Center University of the Ryukyus Geological Survey of Japan National Institute of Advanced Industrial Science and Technology(AIST) University of the Ryukyus Seto Marine Biological Laboratory Field Science Education and Research Center Kyoto University Center for Global Environmental Research National Institute for Environmental Studies

出版者

日本海洋学会

雑誌

海の研究 (ISSN:09168362)

巻号頁・発行日

vol.19, no.1, pp.21-40, 2010-01-05

参考文献数

102

被引用文献数

3

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産業革命以降の二酸化炭素(CO_2)排出量の増加は,地球規模での様々な気候変動を引き起こし,夏季の異常高海水温は,サンゴ白化現象を引き起こすことでサンゴ礁生態系に悪影響を及ぼしたことが知られている。加えて,増加した大気中CO_2が海水に溶け込み,酸として働くことで生じる海洋酸性化もまた,サンゴ礁生態系にとって大きな脅威であることが認識されつつある。本総説では,海洋酸性化が起こる仕組みと共に,海洋酸性化がサンゴ礁域の石灰化生物に与える影響についてのこれまでの知見を概説する。特に,サンゴ礁の主要な石灰化生物である造礁サンゴや紅藻サンゴモ,有孔虫に関しては,その石灰化機構を解説すると共に,海洋酸性化が及ぼす影響について調べた様々な研究例を取り上げる。また,これまでの研究から見えてきた海洋酸性化の生物への影響評価実験を行う上で注意すべき事項,そして今後必要となる研究の方向性についても述べたい。The increase of the atmospheric carbon dioxide (CO_2) concentration after the industrial revolution caused global climate change. During the last several decades, coral reef ecosystems have been devastated by the mass-scale coral bleaching events caused by abnormally high seawater temperature in summer. In addition, increased atmospheric CO_2dissolves in the ocean, acts as an acid and finally decreases the pH level of seawater. This phenomenon, known as ocean acidification, is now being considered as a future threat to the calcifying organisms in coral reef ecosystems. In this review, we summarize basic backgrounds of ocean acidification as well as its potential impacts on coral reef calcifiers. Together with the distinctive mechanisms of calcification among specific groups, we review the impacts of ocean acidification on major reef-builders such as scleractinian corals, calcareous red algae and reef-dwelling foraminifera. Finally, we point out some recently-recognized problems in acidified seawater experiments as well as the future direction of this research field.

著者

Masaya Yamoto Koji Fukumoto Naoto Urushihara

出版者

The Editorial Committee of Annals of Thoracic and Cardiovascular Surgery

雑誌

Annals of Thoracic and Cardiovascular Surgery (ISSN:13411098)

巻号頁・発行日

pp.cr.19-00198, (Released:2020-01-29)

参考文献数

8

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Introduction: Congenital tracheal stenosis (CTS) with a bilateral tracheal bronchus (TB) has not been reported as a subtype of CTS. A novel technique to manage CTS in patients with a bilateral TB is described.Case Report: An infant with tetralogy of Fallot underwent repair of cardiac anomaly at age 1 month. He experienced numerous cyanosis and episodes of transient respiratory arrest. Chest computed tomography (CT) demonstrated an aberrant bilateral upper lobe bronchus arising directly from the trachea and a stenotic trachea connecting the pseudo- carina to the true carina between the common right lower and left lower bronchus. On bronchoscopy, the diameter of the lumen of the narrowed segment was estimated to be less than 2 mm. Tracheal reconstruction was undertaken when he was 2 years of age. The surgical technique using a modified slide tracheoplasty for the correction of this anomaly are described. After surgery, the patient was extubated and has had no respiratory symptoms.Discussion and Conclusion: The patient had unique anatomic considerations that made reconstruction challenging. Our technique of covering a stenotic section by normal trachea is a modification of the slide tracheoplasty technique and is useful for CTS with a unilateral and a bilateral TB.

著者

Kosuke KOBAYASHI Kenji BABA Masaya IGASE Takako SHIMOKAWA MIYAMA Satoshi KAMBAYASHI Masaru OKUDA

出版者

JAPANESE SOCIETY OF VETERINARY SCIENCE

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

pp.19-0553, (Released:2019-12-02)

被引用文献数

1

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Microparticle (MP)-associated tissue factor (TF) activity in plasma might play a role in human disseminated intravascular coagulation (DIC). The aim of this study was to compare MP-TF activity between non-DIC and DIC groups. Ten clinically healthy beagles and 26 diseased dogs were enrolled. The proportion of dogs with increased MP-TF activity was significantly higher in the DIC group than the non-DIC group (P=0.014). MP-TF activity in the DIC group was significantly higher than the non-DIC group (P=0.021). MP-TF activity positively correlated with plasma D-dimer concentration (r=0.42, P=0.034). Moreover, MP-TF activity was decreased by the time of recovery in some dogs with DIC. Larger prospective studies are warranted to assess its value as a diagnostic and prognostic biomarker in DIC.

著者

Taku Suzuki Takuji Iwamoto Noboru Matsumura Masaya Nakamura Morio Matsumoto Kazuki Sato

出版者

The Keio Journal of Medicine

雑誌

The Keio Journal of Medicine (ISSN:00229717)

巻号頁・発行日

pp.2019-0004-OA, (Released:2019-07-06)

参考文献数

20

被引用文献数

7

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Percutaneous ultrasonic tendon needling has been used to treat persistent lateral epicondylitis, and its efficacy has been demonstrated. However, whether ultrasonography is necessary remains unclear. The purpose of this retrospective study was to evaluate the efficacy of percutaneous tendon needling without ultrasonography for lateral epicondylitis. A total of 36 patients who underwent tendon needling without ultrasonography for lateral epicondylitis were retrospectively included in the study. The tendinotic lesion was needled by fenestration approximately 20–30 times without sonographic assistance. The Visual Analogue Scale (VAS) pain score, the grip strength, and success rates were assessed at baseline and at 1, 3, 6, and 12 months after treatment. The Nirschl tennis elbow score was evaluated at baseline and at 6 and 12 months after the needling procedure. The mean VAS pain score and grip strength at 3, 6, and 12 months significantly improved compared to the baseline values. At 6 and 12 months, the success rates had significantly increased compared to the rates at 1 month. The mean Nirschl scores at 6 and 12 months were significantly better than the baseline value. No severe complications were observed during the study period. Percutaneous tendon needling without ultrasonography is a simple and safe technique. The procedure is effective for lateral epicondylitis that is unresponsive to conventional conservative treatments.

著者

阿久津 洋巳 石亀 雅哉 AKUTSU Hiromi ISHIGAME Masaya

出版者

岩手大学教育学部附属教育実践総合センター

雑誌

岩手大学教育学部附属教育実践総合センター研究紀要 (ISSN:13472216)

巻号頁・発行日

no.11, pp.167-175, 2012-03-31

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大学生の共通教育科目の学力は,合理的な手立てとして多くの場合試験によって評価される。受講生の人数が多いため,客観式テストによる学力評価が望ましいが,信頼性のあるテストを作成することは容易なことではない。本研究は,項目反応理論を用いて,適正な評価を行うために必要な試験問題の選び方とその採点の方法について検討した。そのため実際の共通教育試験問題のデータに対して項目反応理論を適用し,不適格な問題項目を見出し,それらの問題項目を取り除いた採点結果と初めの試験問題を使った通常の採点結果とを比較した。項目反応理論を適用する有効性がいくつかの側面で明らかとなった。

著者

Koki R. Katsuhara Naoyuki Nakahama Taketo Komura Masaya Kato Yuko Miyazaki Yuji Isagi Motomi Ito Atushi Ushimaru

出版者

The Genetics Society of Japan

雑誌

Genes & Genetic Systems (ISSN:13417568)

巻号頁・発行日

pp.18-00058, (Released:2019-06-29)

参考文献数

19

被引用文献数

1

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Commelina communis f. ciliata (Commelinaceae), a newly distinguished taxon, is an annual andromonoecious herb exhibiting a mixed mating system, the details of which remain unclear. We developed microsatellite markers for use in exploring the evolution of andromonoecy and mixed mating in the species. Fifteen microsatellite loci were developed using next-generation sequencing. The primer sets were used to evaluate 65 C. communis f. ciliata individuals from three populations in Japan; we found 1–13 alleles per locus and the expected heterozygosity ranged from 0.00 to 0.76. The markers are potentially useful to examine intra- and interspecies genetic structure and the mixed mating strategy of Commelina species via paternity analysis.

著者

野村 真 河本 昌也 Tadashi Nomura Masaya Kawamoto

出版者

京都府立医科大学医学部医学科(教養教育)

雑誌

Studia humana et naturalia = Studia humana et naturalia (ISSN:03856755)

巻号頁・発行日

no.52, pp.51-62, 2019-03-29

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京都府立医科大学大学院神経発生生物学

著者

Motohiko Suzuki Makoto Yokota Tamami Matsumoto Meiho Nakayama Masaya Takemura Yoshihiro Kanemitsu Akio Niimi Yoshihisa Nakamura Shingo Murakami

出版者

Tohoku University Medical Press

雑誌

The Tohoku Journal of Experimental Medicine (ISSN:00408727)

巻号頁・発行日

vol.247, no.1, pp.19-25, 2019 (Released:2019-01-12)

参考文献数

43

被引用文献数

3

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Patients with laryngopharyngeal reflux (LPR) were reported to suffer from hypogeusia that affects quality of life. Proton pump inhibitor (PPI) is a useful drug in the treatment of LPR, but its effect on hypogeusia is not known. We therefore assessed the effects of PPI or a histamine H2 receptor antagonist (H2 blocker) on hypogeusia among patients with LPR. Both PPI and H2 blocker could inhibit acid reflux. LPR was diagnosed with reflux finding score and reflux symptom index. The visual analogue scale (VAS) of taste disturbance symptoms and the gustatory tests were assessed before and 8 weeks after treatment with esomeprazole, a PPI (20 patients, aged 50.0 ± 1.7 years) or famotidine, a H2 blocker (20 patients, aged 47.1 ± 1.8 years). There were no significant differences in VAS scores and recognition thresholds for four basic tastes between the two groups before treatment. Only PPI therapy significantly decreased the VAS scores, suggesting the improvement of taste perception. Moreover, PPI therapy significantly decreased recognition thresholds for bitter taste in the anterior tongue (chorda tympani nerve area) and the thresholds in the posterior tongue (glossopharyngeal nerve area) for salty, sour, and bitter tastes. By contrast, H2-blocker therapy caused no significant changes of thresholds in the anterior tongue, but improved the threshold only for bitter in the posterior tongue, the value of which was however significantly higher than that in PPI group. In conclusion, PPI could ameliorate hypogeusia by improving bitter, salty, and sour tastes among patients with LPR.

著者

Akemi Ohmiya Masaya Kato Takehiko Shimada Kenji Nashima Sanae Kishimoto Masayasu Nagata

出版者

The Japanese Society for Horticultural Science

雑誌

The Horticulture Journal (ISSN:21890102)

巻号頁・発行日

pp.UTD-R003, (Released:2019-03-12)

被引用文献数

29

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Carotenoids are isoprenoid pigments, which are widely distributed in nature. In fruits and flowers, carotenoids are responsible for bright yellow, orange, and red colors and provide a substrate to form flavor compounds, which attract pollinators and seed dispersers. In leaves, carotenoids play an essential role in photosynthesis. When carotenoids are ingested in the diet, they play a vital role in human nutrition and health as a precursor of vitamin A, antioxidants, and anti-inflammatory agents. It is therefore important to control carotenoid accumulation to improve the commercial value of horticultural crops. Carotenoid accumulation is regulated by flux through the carotenoid biosynthetic pathway, and also by degradation and sequestration into plastids, which function as sink organelles. These processes are mostly controlled at the transcriptional levels of relevant genes. In this review, we summarize recent advances in studies on the molecular mechanisms that regulate carotenoid accumulation in vegetables, fruits, and ornamental flowers.

著者

MURATA Akihiko WATANABE I. Shun-ichi SASAKI Hidetaka KAWASE Hiroaki NOSAKA Masaya

出版者

Meteorological Society of Japan

雑誌

気象集誌. 第2輯 (ISSN:00261165)

巻号頁・発行日

pp.2019-035, (Released:2019-02-04)

被引用文献数

7

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A novel method for detecting tropical cyclones in high-resolution climate model simulations is proposed herein and subjected to examination. The proposed method utilizes a two-dimensional scatterplot based on two quantities that represent the radial gradient and the tangential asymmetry of mid-to upper-level thickness around a simulated vortex. A comparison between the modeled and observed tropical cyclones using the non-hydrostatic regional climate model (NHRCM) with 20-km grid spacing under reanalysis-driven boundary conditions for one year revealed that no cyclones were missed and there was only one false alarm over a part of the western North Pacific near Japan. The simulated vortices were classified into two categories; tropical cyclones and extratropical cyclones. These two groups, having specific features, were also found in the results using present-day climate datasets, indicating that the tropical cyclones were reasonably distinguished from extratropical cyclones although a one-by-one comparison could not, in principle, be conducted. Comparison of the results obtained from datasets with 5-km and 20-km grid spacing demonstrated that the detection scheme was only weakly dependent on the horizontal resolution. This dependence was further reduced by using the radial gradient over the outer radii instead of near the center of the vortex. The resolution-independent feature in this method is due to a procedure in which the tangential asymmetry of mid-to upper-level thickness is utilized instead of the relative vorticity at 850 hPa, often used in conventional schemes. This procedure allows the method to identify tropical cyclones without the need to determine a grid-dependent threshold. The method proposed here provides a useful tool for detecting tropical cyclones in high-resolution climate simulations.

著者

Nguyen V. SON James K. CHAMBERS Takanori SHIGA Takuya E. KISHIMOTO Shotaro KIKUHARA Kohei SAEKI Reina FUJIWARA Masaya TSUBOI Ryohei NISHIMURA Kazuyuki UCHIDA Hiroyuki NAKAYAMA

出版者

JAPANESE SOCIETY OF VETERINARY SCIENCE

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

vol.80, no.7, pp.1125-1128, 2018 (Released:2018-07-12)

参考文献数

19

被引用文献数

8

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A 12-year-old intact male Welsh Corgi was presented with enlargement of the right scrotum. Both testicles were surgically removed and histopathologically examined. On gross examination, white nodules were found in the epididymis and ductus deferens. Histopathologically, the nodules developed continuously from the tunica vaginalis testis of the right scrotum and consisted of spindle-shaped neoplastic cells that invaded the surrounding tissue. Immunohistochemically, the neoplastic cells were diffusely positive for vimentin, cytokeratin and Wilms tumor-1 (WT-1). Based on these findings, the tumor was diagnosed as sarcomatoid mesothelioma. The dog presented with respiratory distress 122 days after surgery and clinical examination found multiple metastatic lesions in the lung, abdominal lymph nodes and peritoneum. The dog died 144 days after surgery due to disease progression.