著者

渡辺 智子 桜井 芳子 阿波 理江 川野 朝子 高居 百合子 Tomoko Watanabe Yoshiko Sakurai Masae Awa Tomoko Kawano Yuriko Takai 千葉県立衛生短期大学栄養学 食品学 八日市場保健課 袖ヶ浦外科胃腸科 ビーコンソフトウェアK. K 千葉県立衛生短期大学栄養学 食品学 Chiba College of Health Science Chiba College of Health Science

雑誌

千葉県立衛生短期大学紀要 = Bulletin of Chiba College of Health Science (ISSN:02885034)

巻号頁・発行日

vol.4, no.1, pp.15-17, 1985

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我国は四面を海に囲まれ,国民1人1日当り93.4gという水産物(鯨を除く)の摂取量が示すように海産魚介類が動物性蛋白資源として重要な位置を占めている。その中で鮭は,摂取量(国民1人1日2.9g)こそ少ないが,おにぎりの材料,弁当のおかず等として日本人に昔から親しまれている魚の一種である。市販されている鮭を大きく分けると,生鮭,甘塩鮭,辛塩鮭の3種である。四訂日本食品成分表では,甘塩鮭は新巻鮭と標示し内臓等を除去した鮭の魚体重に対し20%前後の食塩量で塩蔵したものと定義している。また,辛塩鮭は塩鮭と標示し内臓等を除去した鮭の魚体重に対し40%前後の食塩量で塩蔵したものと定義している。実際に市販されている3種の鮭にはどの位の塩分が含まれ,各販売店により差が見られるのであろうか。そこで,実際に市販されている3種の鮭の食塩含量を知り,更に水分量,大きさ,価格等の相違を知ることを目的に,今回の実験調査を行なった。

著者

Ayumi SUMI James K CHAMBERS Soma ITO Kazuhiro KOJIMA Tetsuo OMACHI Masaki DOI Kazuyuki UCHIDA

出版者

JAPANESE SOCIETY OF VETERINARY SCIENCE

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

vol.86, no.1, pp.39-48, 2024 (Released:2024-01-10)

参考文献数

58

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Merkel cell carcinoma (MCC) is a cutaneous neuroendocrine tumor, and more than 90% of feline MCC cases test positive for Felis catus papillomavirus type 2 (FcaPV2). In the present study, basal cell markers p40, p63, and p73 and the stem cell marker SOX2 and cytokeratin 14 (CK14) were immunohistochemically examined in normal fetal, infant, and adult feline skin tissues. The expression of these proteins was examined in tumors positive for FcaPV2, including MCC, basal cell carcinoma (BCC), Bowenoid in situ carcinoma (BISC), and squamous cell carcinoma (SCC). Infant and adult feline skin tissues had mature Merkel cells, which were CK14-, CK18+, CK20+, SOX2+, synaptophysin+ and CD56+, while fetal skin tissue had no mature Merkel cells. MCC was immunopositive for p73, CK18, and SOX2 in 32/32 cases, and immunonegative for CK14 in 31/32 cases and for p40 and p63 in 32/32 cases. These results indicate that MCC exhibits different immunophenotypes from Merkel cells (p73-) and basal cells (p40+, p63+, and SOX2-). In contrast, all 3 BCCs, 1 BISC, and 2 SCCs were immunopositive for the basal cell markers p40, p63, and p73. The life cycle of papillomavirus is closely associated with the differentiation of infected basal cells, which requires the transcription factor p63. Changes in p63 expression in FcaPV2-positive MCC may be associated with unique cytokeratin expression patterns (CK14-, CK18+, and CK20+). Furthermore, SOX2 appears to be involved in Merkel cell differentiation in cats, similar to humans and mice.

著者

Tatsuhito II James K CHAMBERS Ko NAKASHIMA Yuko GOTO-KOSHINO Kazuyuki UCHIDA

出版者

JAPANESE SOCIETY OF VETERINARY SCIENCE

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

pp.23-0299, (Released:2023-12-18)

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Differentiating intestinal T-cell lymphoma from chronic enteropathy (CE) in endoscopic samples is often challenging. In the present study, automated machine learning systems were developed to distinguish between the two diseases, predict clonality, and detect prognostic factors of intestinal lymphoma in cats. Four models were created for four experimental conditions: experiment 1 to distinguish between intestinal T-cell lymphoma and CE; experiment 2 to distinguish large cell lymphoma, small cell lymphoma, and CE; experiment 3 to distinguish granzyme B+ lymphoma, granzyme B- lymphoma, and CE; and experiment 4 to distinguish between T-cell receptor (TCR) clonal population and TCR polyclonal population. After each experiment, a pathologist reviewed the test images and scored for lymphocytic infiltration, epitheliotropism, and epithelial injury. The models of experiments 1–4 achieved area under the receiver operating characteristic curve scores of 0.943 (precision, 87.59%; recall, 87.59%), 0.962 (precision, 86.30%; recall, 86.30%), 0.904 (precision, 82.86%; recall, 80%), and 0.904 (precision, 81.25%; recall, 81.25%), respectively. The images predicted as intestinal T-cell lymphoma showed significant infiltration of lymphocytes and epitheliotropism than CE. These models can provide evaluation tools to assist pathologists with differentiating between intestinal T-cell lymphoma and CE.

著者

坂井 進一郎 PANG Peter K STOCKIGT Joa PONGLUX Dhav TONGROCH Pav 北島 満里子 堀江 俊治 高山 廣光 矢野 眞吾 渡辺 裕司 渡辺 和夫 相見 則郎 KTPANG Peter JOACHIM Stoc DHAVADEE Pon PAVICH Tongr JOACHIM Sto PETER KT Pa DHAVADEE Po PAVICH Tong PETER KT Pan 池上 文雄

出版者

千葉大学

雑誌

国際学術研究

巻号頁・発行日

1994

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アカネ科植物ミトラガイナ・スペシオ-サ(Mitragyna speciosa)葉部は、タイ国内では"Kratom"、マレーシア国内では"Biak Biak"と呼ばれる伝承民間薬であり、麻薬様作用:中枢神経抑制効果(阿片様作用)と中枢神経興奮効果(コカイン様作用)及び止瀉作用が知られていた。本植物に含まれる有効成分に焦点を当てて、日本、タイ、ドイツ、カナダの研究者がそれぞれの専門領域の研究分野で協力することにより、化学と薬理の両面からの究明研究を行なった。化学面では、タイ産植物葉部の詳細な成分検索を行ない、主塩基Mitragynineと共に新化合物を含む数種の微量塩基を単離構造決定した。更に、主塩基Mitragynineの集約的ルートによる不斉全合成法を開拓することができた。また、Mitragynineの菌代謝産物として報告されたプソイドインドキシル体やMitragynineオキシインドールも化学変換により合成し、これらの立体化学を明らかにすると共に、薬理活性評価用検体として供した。更に、マレーシア産Mitragyna speciosa葉部のアルカロイドについても化学的研究を行い、新規化合物の単離と共にピリドン型ミトラガイナアルカロイドの基本骨格合成を達成することができた。一方、薬理面での成果としては以下の点があげられる。主成分Mitragynineの中枢作用について検討を行い、Mitragynineに強力な鎮痛作用を見い出した。さらに末梢作用として、平滑筋収縮抑制作用を見い出した。輸精管標本を用いた検討から、末梢作用の作用機序としてMitragynineが神経の節後線維に作用し、神経伝達物質の放出を抑制することが考えられた。神経由来細胞を用い、パッチクランプ、蛍光色素法などを駆使して解析した結果、Mitragynineの神経伝達物質遊離抑制作用には神経のT型およびL型Caチャネル遮断作用が関与していると推定した。また、モルモット回腸標本に用いた検討から、Mitragynineはオピオイド作用も有していることが判明した。その効力はMorphineの1/6であった。Mitragynineの微生物代謝物Pseudoindoxyl体にもオピオイド作用が認められ、その効力はMorphineの約20倍強力であった。そこで、これらの化合物についてオピオイド受容体結合実験を行い、両アルカロイドは特にμ受容体に親和性が高いことを見い出した。これらのMitragynineの末梢作用はその鎮痛作用機序に関連していると考えられる。Mitragynineの構造に類似する釣藤鈎アルカロイドおよび母核のIndoloqunolitidine誘導体を用いて、オピオイド作用の構造活性相関的検討を行った。該結果、Mitragynineの9位メトキシル基が作用発現に必須であることが明らかとなった。また、そのメトキシル基と4位の窒素の位置関係が効力を左右していると推察した。また、Mitragynineの中枢作用に関する研究で以下の成果を得た。脳内5-HT2A受容体作動薬をマウスに投与すると"首振り行動"が発現する。本行動に対するMitragynineの影響を検討した結果、Mitragynineは用量依存的な抑制効果を示した。Mitragynineの抑制作用はNoradrenaline枯渇薬及び5-HT枯渇薬の影響を受けず,α2受容体拮抗薬で解除されたことから、Mitragynineがシナプス後膜α2受容体刺激作用または5-HT2A受容体遮断作用を有することが示唆された。Mitragynineをマウスに腹腔内あるいは脳室内投与(i.c.v.)すると顕著な鎮痛作用が認められた。i.c.v.投与したMitragynineの鎮痛作用はオピオイド拮抗薬Naloxone(i.c.v.),α2受容体拮抗薬および5-HT受容体拮抗薬(i.c.v.,orくも膜下腔内投与)で抑制された。従って1)Mitragynine自身が脳内で作用して鎮痛作用を発現しうること,および2)この鎮痛作用に上位オピオイド受容体及び下降性モノアミン神経系が関与することが推察された。この様に、ミトラガイナアルカロイドに種々の特異的かつ有効な薬理活性が見出された。これらアルカロイドは今後、医薬品の開発、薬理作用機序の観点から興味深い素材と考えられる。上記研究と平行して、タイ産Uncaria,Nauclea,Hunteria、及びVemonia属植物の化学的検索及び薬理学的評価も実施した。

著者

Susumu IWAIDE Yutaro NAKAYAMA James K CHAMBERS Kazuyuki UCHIDA Daisuke NAKAGAWA Yumi YAMANASHI Haruna BANDO Tomoaki MURAKAMI

出版者

JAPANESE SOCIETY OF VETERINARY SCIENCE

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

vol.85, no.12, pp.1296-1300, 2023 (Released:2023-12-06)

参考文献数

30

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The brain of a rhesus monkey that died at 43 years of age with symptoms of suspected cognitive dysfunction was analyzed. pathological analyses revealed characteristic Alzheimer’s disease-related lesions: the aggregation of amyloid β (Aβ) in the form of senile plaques and phosphorylated tau proteins. We also revealed that Aβ43, which is prone to aggregation and toxicity in humans, is involved in senile plaques in the brain of the rhesus monkey, as well as several other Aβ species. Comparative studies of neuropathology using aged nonhuman primates lack behavioral descriptions compared to human medicine. This case report showed behavioral abnormalities and the detailed pathological changes that may have caused it in a super-aged rhesus monkey.

著者

edited by K.R. Moore

出版者

Routledge

巻号頁・発行日

2023

著者

James K CHAMBERS Soma ITO Kazuyuki UCHIDA

出版者

JAPANESE SOCIETY OF VETERINARY SCIENCE

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

vol.85, no.11, pp.1195-1209, 2023 (Released:2023-11-18)

参考文献数

168

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Merkel cell carcinoma (MCC) is a rare skin tumor that shares a similar immunophenotype with Merkel cells, although its origin is debatable. More than 80% of human MCC cases are associated with Merkel cell polyomavirus infections and viral gene integration. Recent studies have shown that the clinical and pathological characteristics of feline MCC are comparable to those of human MCC, including its occurrence in aged individuals, aggressive behavior, histopathological findings, and the expression of Merkel cell markers. More than 90% of feline MCC are positive for the Felis catus papillomavirus type 2 (FcaPV2) gene. Molecular changes involved in papillomavirus-associated tumorigenesis, such as increased p16 and decreased retinoblastoma (Rb) and p53 protein levels, were observed in FcaPV2-positive MCC, but not in FcaPV2-negative MCC cases. These features were also confirmed in FcaPV2-positive and -negative MCC cell lines. The expression of papillomavirus E6 and E7 genes, responsible for p53 degradation and Rb inhibition, respectively, was detected in tumor cells by in situ hybridization. Whole genome sequencing revealed the integration of FcaPV2 DNA into the host feline genome. MCC cases often develop concurrent skin lesions, such as viral plaque and squamous cell carcinoma, which are also associated with papillomavirus infection. These findings suggest that FcaPV2 infection and integration of viral genes are involved in the development of MCC in cats. This review provides an overview of the comparative pathology of feline and human MCC caused by different viruses and discusses their cell of origin.

著者

K. ECKARDT H. THRUM G. BRADLER E. TONEW M. TONEW

出版者

JAPAN ANTIBIOTICS RESEARCH ASSOCIATION

雑誌

The Journal of Antibiotics (ISSN:00218820)

巻号頁・発行日

vol.28, no.4, pp.274-279, 1975 (Released:2006-04-12)

参考文献数

5

被引用文献数

25 33

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Streptovirudin is a complex of antibiotics isolated from fermentation of a Streptomyces strain. Eight components have been isolated as pure substances, designated as streptovirudins A1, A2, B1, B2, C1, C2, D1 and D2. The streptovirudins are chemically and biologically related to each other and appear to be a new family of antibiotics exhibiting activity against a variety of Gram-positive bacteria, mycobacteria, and various DNA- and RNA-viruses. According to their physico-chemical properties these antibiotics have been classified in series I and II. The streptovirudins of series II (A2, B2, C2, D2) are related to the reported antibiotics tunicamycin, mycospocidin and 24010.

著者

Chih Chun WU Yasutsugu MIWA Makoto NAKATA James K CHAMBERS Kazuyuki UCHIDA Nobuo SASAKI

出版者

JAPANESE SOCIETY OF VETERINARY SCIENCE

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

pp.23-0230, (Released:2023-11-13)

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A retrospective study involving 14 pet rabbits histopathologically diagnosed with malignant peripheral nerve sheath tumors (MPNSTs) was conducted. The age at diagnosis was 4–12 years, with a median age of 8.6 years. All rabbits had solid subcutaneous tumor masses in varied locations. Surgical excision of the tumors was performed in all cases. Recurrence was observed in 10 cases (71%), and postoperative metastasis to the lung was suspected in 4 cases (29%). The postoperative mean and median survival times were 11 months and 9 months, respectively. Hence, MPNSTs should be considered in the differential diagnosis for subcutaneous masses in rabbits and it is essential to inform the owners of the potentially high recurrence and metastasis rates.

著者

Satoshi WATANABE Naofumi YOSHIDA Kairi BABA Hiroyuki YAMASAKI Natsuko O. SHINOZAKI Masato OGAWA Tomoya YAMASHITA Aya K. TAKEDA

出版者

BMFH Press

雑誌

Bioscience of Microbiota, Food and Health (ISSN:21863342)

巻号頁・発行日

pp.2022-047, (Released:2023-10-18)

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Gut microbiota imbalance plays an important role in the pathogenesis of various diseases. Here, we determined microbe–microbe interactions and gut microbiome stability in a Japanese population with varying body mass indices (BMIs) and enterotypes. Using 16S ribosomal RNA gene sequencing, we analyzed gut microbial data from fecal samples obtained from 3,365 older Japanese individuals. The individuals were divided into lean, normal, and obese groups based on their BMIs. They were further categorized according to their gut microbiota enterotypes: Bacteroides (enterotype B), Prevotella (enterotype P), and Ruminococcus (enterotype R). We obtained data on different host factors, such as age, BMI, and disease status, using a survey questionnaire evaluated by the Mykinso gut microbiome testing service. Subsequently, we evaluated the co-occurrence network. Individual differences in BMI were associated with differences in co-occurrence networks. By exploring the network topology based on BMI status , we observed that the network density was lower in the lean group than that in the normal group. Furthermore, a simulation-based stability analysis revealed a lower resistance index in the lean group than those in the other two groups. Our results provide insights into various microbe–microbe interactions and gut microbial stability and could aid in developing appropriate therapeutic strategies targeting gut microbiota modulation to manage frailty.

著者

James K CHAMBERS Soma ITO Kazuyuki UCHIDA

出版者

JAPANESE SOCIETY OF VETERINARY SCIENCE

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

pp.23-0322, (Released:2023-09-22)

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Merkel cell carcinoma (MCC) is a rare skin tumor that shares a similar immunophenotype with Merkel cells, although its origin is debatable. More than 80% of human MCC cases are associated with Merkel cell polyomavirus infections and viral gene integration. Recent studies have shown that the clinical and pathological characteristics of feline MCC are comparable to those of human MCC, including its occurrence in aged individuals, aggressive behavior, histopathological findings, and the expression of Merkel cell markers. More than 90% of feline MCC are positive for the Felis catus papillomavirus type 2 (FcaPV2) gene. Molecular changes involved in papillomavirus-associated tumorigenesis, such as increased p16 and decreased retinoblastoma (Rb) and p53 protein levels, were observed in FcaPV2-positive MCC, but not in FcaPV2-negative MCC cases. These features were also confirmed in FcaPV2-positive and -negative MCC cell lines. The expression of papillomavirus E6 and E7 genes, responsible for p53 degradation and Rb inhibition, respectively, was detected in tumor cells by in situ hybridization. Whole genome sequencing revealed the integration of FcaPV2 DNA into the host feline genome. MCC cases often develop concurrent skin lesions, such as viral plaque and squamous cell carcinoma, which are also associated with papillomavirus infection. These findings suggest that FcaPV2 infection and integration of viral genes are involved in the development of MCC in cats. This review provides an overview of the comparative pathology of feline and human MCC caused by different viruses and discusses their cell of origin.

著者

Reina Hiraishi Yuika Morita Ryo Nakamura Haruhiko Koseki Kazuko Koshiba-Takeuchi Jun K. Takeuchi

雑誌

BMB2015 Biochemistry and Molecular Biology

巻号頁・発行日

2015-11-02

著者

Ma. LaRue E. Ballesfin Ricky B. Vinarao Janice Sapin Sung-Ryul Kim Kshirod K. Jena

出版者

Japanese Society of Breeding

雑誌

Breeding Science (ISSN:13447610)

巻号頁・発行日

vol.68, no.4, pp.474-480, 2018 (Released:2018-10-10)

参考文献数

34

被引用文献数

9 9

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An intergeneric hybrid was successfully developed between Oryza sativa L. (IRRI 154) and Leersia perrieri (A. Camus) Launert using embryo rescue technique in this study. A low crossability value (0.07%) implied that there was high incompatibility between the two species of the hybrid. The F1 hybrid showed intermediate phenotypic characteristics between the parents but the plant height was very short. The erect plant type resembled the female parent IRRI 154 but the leaves were similar to L. perrieri. Cytological analysis revealed highly non-homology between chromosomes of the two species as the F1 plants showed 24 univalents without any chromosome pairing. The F1 hybrid plant was further confirmed by PCR analysis using the newly designed 11 indel markers showing polymorphism between O. sativa and L. perrieri. This intergeneric hybrid will open up opportunities to transfer novel valuable traits from L. perrieri into cultivated rice.

著者

von K.H. Wiederkehr

出版者

Wissenschaftliche Verlagsgesellschaft

巻号頁・発行日

1967

著者

K.F.ベルトラム [著] 西浦公訳

出版者

御茶の水書房

巻号頁・発行日

1980

著者

T. K. 菅野 徹三

出版者

順天堂医学会

雑誌

順天堂医学 (ISSN:00226769)

巻号頁・発行日

vol.M23, no.91, pp.1025-1031, 1890-10-15 (Released:2015-06-18)

著者

樋口 浩造 弓谷 葵 ヒグチ ユミヤ K. Higuchi A. Yumiya

雑誌

愛知県立大学文学部論集. 日本文化学科編

巻号頁・発行日

vol.57, pp.107-167, 2008

著者

辻 和良 ツジ K. Tsuji

雑誌

名古屋女子大学紀要. 人文・社会編 = Journal of Nagoya Women's University. Humanities・social science

巻号頁・発行日

vol.36, pp.304-297, 1990-03-05

著者

影山悦子 M.A.レウトヴァ K.アヴドゥルラエフ編

出版者

名古屋大学人文学研究科 : 名古屋大学高等研究院

巻号頁・発行日

2021

著者

Stella Amarachi Ihim Yukiko K. Kaneko Moe Yamamoto Momoka Yamaguchi Toshihide Kimura Tomohisa Ishikawa

出版者

The Pharmaceutical Society of Japan

雑誌

Biological and Pharmaceutical Bulletin (ISSN:09186158)

巻号頁・発行日

vol.46, no.4, pp.630-635, 2023-04-01 (Released:2023-04-01)

参考文献数

31

被引用文献数

2

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The improvement of type 2 diabetes mellitus induced by naturally occurring polyphenols, known as flavonoids, has received considerable attention. However, there is a dearth of information regarding the effect of the trihydroxyflavone apigenin on pancreatic β-cell function. In the present study, the anti-diabetic effect of apigenin on pancreatic β-cell insulin secretion, apoptosis, and the mechanism underlying its anti-diabetic effects, were investigated in the INS-ID β-cell line. The results showed that apigenin concentration-dependently facilitated 11.1-mM glucose-induced insulin secretion, which peaked at 30 µM. Apigenin also concentration-dependently inhibited the expression of endoplasmic reticulum (ER) stress signaling proteins, CCAAT/enhancer binding protein (C/EBP) homologous protein (CHOP) and cleaved caspase-3, which was elevated by thapsigargin in INS-1D cells, with peak suppression at 30 µM. This was strongly correlated with the results of flow cytometric analysis of annexin V/propidium iodide (PI) staining and DNA fragmentation analysis. Moreover, the increased expression of thioredoxin-interacting protein (TXNIP) induced by thapsigargin was remarkably reduced by apigenin in a concentration-dependent manner. These results suggest that apigenin is an attractive candidate with remarkable and potent anti-diabetic effects on β-cells, which are mediated by facilitating glucose-stimulated insulin secretion and preventing ER stress-mediated β-cell apoptosis, the latter of which may be possibly mediated by reduced expression of CHOP and TXNIP, thereby promoting β-cell survival and function.