著者

Yusuke IZUMI Yuki HOSHINO Kenji HOSOYA Satoshi TAKAGI Masahiro OKUMURA

出版者

JAPANESE SOCIETY OF VETERINARY SCIENCE

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

pp.14-0347, (Released:2014-12-05)

被引用文献数

1 2

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The present study involved the isolation and characterization of canine tumor endothelial cells (TECs) from two malignancies. TECs were isolated using magnetic cell sorting following FITC labeling with UEA1 lectin, and they were characterized by measuring genetic and histopathological endothelial markers. Isolated TECs exhibited a cobblestone-like morphology and expressed both vascular endothelial growth factor receptor 2 (VEGFR2) and Von Willebrand factor (vWF). Further, both TECs and tumor cells derived from a seminoma exhibited increased C-X-C chemokine receptor type 7 (CXCR7) expression. However, CXCR7 expression was not detected in TECs and tumor cells derived from a hepatocellular carcinoma. Understanding TEC specific traits may be important in the development of more efficacious anti-angiogenic therapies that do not induce adverse effects.

著者

Takahiro NAGUMO Yuki HOSHINO Kohei NAKATA Masaaki KATAYAMA

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.2, pp.180-184, 2023 (Released:2023-02-01)

参考文献数

10

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An intact, male mixed-breed cat approximately 3 months of age was referred to Iwate University Veterinary Teaching Hospital with dysuria that developed after a traffic accident. At the initial visit, a cystostomy tube was placed as a temporal urinary diversion. Antegrade urethrography revealed severe stenosis of the intrapelvic urethra. A prepubic urethrostomy (PPU) with formation of a convex urethral stoma was performed 22 days after the first visit. Twenty-four months after surgery, the cat could urinate smoothly in a standing position, although a small amount of intermittent leakage was observed immediately after getting up. There was no evidence of peristomal dermatitis. Therefore, the formation of a convex urethral stoma may effectively prevent peristomal dermatitis in cats who undergo PPU.

著者

Yuki HOSHINO Takanori INDEN Riko OTAKA Daisuke FUKUI Hiroshi SATOH Masaaki KATAYAMA

出版者

JAPANESE SOCIETY OF VETERINARY SCIENCE

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

pp.19-0339, (Released:2019-10-08)

被引用文献数

1

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Phenobarbital (PB) decreases the cyclosporine (CsA) blood level in humans. However, the interaction of PB with CsA has not been reported in cats. This study investigated the effects of multiple doses of PB on the pharmacokinetics of CsA in three healthy cats. The treatments included oral CsA 5 mg/kg alone and oral CsA 5 mg/kg plus PB 5 mg/kg for 4 weeks. Co-administration of PB with CsA resulted in significant decreases in the oral bioavailability of CsA though both the first pass and elimination phases. These preliminary results suggest that oral administration of multiple doses of PB increases the required CsA dosage in CsA-based immunosuppressive therapy in cats.

著者

Yuki Hoshino Kenya Jin'no

出版者

Research Institute of Signal Processing, Japan

雑誌

Journal of Signal Processing (ISSN:13426230)

巻号頁・発行日

vol.22, no.4, pp.153-156, 2018-07-25 (Released:2018-07-25)

参考文献数

15

被引用文献数

1

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Recently, machine learning has been attracting attention. Machine learning is mainly realized by the learning of artificial neural networks. Various learning methods have been proposed; however, the learning methods are based on gradient methods. On the other hand, swarm intelligence (SI) algorithms have been attracting attention in the optimization field. Generally speaking, SI algorithms have a large computation cost. Therefore, there are few cases of SI algorithms being applied to machine learning. In this paper, we propose a novel learning algorithm for an artificial neural network which applies our proposed nonlinear map optimization (NMO) method. NMO consists of some simple particles which are driven by a simple nonlinear map. NMO can be classified as an SI algorithm. However, it has only a small computation cost. Therefore, NMO can be applied to a learning algorithm for an artificial neural network. In this paper, we introduce NMO, and a small learning simulation is carried out to confirm the performance of our learning method.

著者

Mami ADACHI Yuki HOSHINO Yusuke IZUMI Satoshi TAKAGI

出版者

公益社団法人 日本獣医学会

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

pp.15-0625, (Released:2015-12-21)

被引用文献数

1 8

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Canine hemangiosarcoma (HSA) is a progressive malignant neoplasm of dogs for which there is currently no effective treatment. A recent study suggested that receptor tyrosine kinases (RTKs), the PI3K/Akt/m-TOR and MAPK pathways are all activated in canine and human HSA. The aim of the present study was to investigate the overexpression of these proteins by immunohistochemistry in canine splenic HSA to identify potential molecular therapeutic targets. A total of 10 splenic HSAs and two normal splenic samples surgically resected from dogs were sectioned and stained with hematoxylin and eosin for histological diagnosis or analyzed using immunohistochemistry. The expression of RTKs, c-kit, VEGFR-2 and PDGFR-2, as well as PI3K/Akt/m-TOR and MEK was higher in canine splenic HSAs compared to normal spleens. These proteins may therefore be potential therapeutic targets in canine splenic HSA.

著者

Shunsuke NOGUCHI Takashi MORI Yuki HOSHINO Nami YAMADA Takayuki NAKAGAWA Nobuo SASAKI Yukihiro AKAO Kohji MARUO

出版者

JAPANESE SOCIETY OF VETERINARY SCIENCE

雑誌

Journal of Veterinary Medical Science (ISSN:09167250)

巻号頁・発行日

vol.74, no.1, pp.1-8, 2012 (Released:2012-02-01)

参考文献数

20

被引用文献数

38 50

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MicroRNA-145 (miRNA-145; miR-145) is aberrantly expressed in most of human cancers and plays a significant role in carcinogenesis and cancer progression. In the current study, we focused on how miR-145 plays a role in canine and human malignant melanomas. MiR-145 was significantly downregulated in canine malignant melanoma tissues and canine melanoma cell lines, as well as human melanoma cell lines tested. The ectopic expression of miR-145 showed a significant growth inhibition in both canine and human melanoma cells tested, and the effect was achieved partly by suppressing c-MYC in canine melanoma LMeC and in human melanoma A2058 and Mewo cells. At the same time, a suppressive tendency on cell migration in canine melanoma KMeC cells and significant suppression of cell migration in human melanoma A2058 cells by suppressing FASCIN1 were also found. These findings suggest that miR-145 acts as a tumor suppressor in both canine and human malignant melanomas.