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  1. Article ; Online: Isolation and propagation of bovine blood-derived macrophages using a mixed culture with bovine endothelial B46 cells.

    Hiramatsu, Kanae / Ikeda, Rina / Kawaji, Satoko / Ueno, Yuichi / Nagata, Reiko / Hayashi, Ken-Go / Iga, Kosuke / Yoshioka, Miyako / Takenouchi, Takato

    Cell biology international

    2023  Volume 48, Issue 1, Page(s) 76–83

    Abstract: Macrophages are innate immune cells with multiple functions such as phagocytosis, cytokine production, and antigen presentation. Since macrophages play critical roles in some bacterial infectious diseases in cattle, including tuberculosis, ... ...

    Abstract Macrophages are innate immune cells with multiple functions such as phagocytosis, cytokine production, and antigen presentation. Since macrophages play critical roles in some bacterial infectious diseases in cattle, including tuberculosis, paratuberculosis, and brucellosis, the in vitro culturing of bovine macrophages is useful for evaluating host-pathogen interactions at the cellular and molecular levels. We have previously reported the establishment of two immortalized bovine liver sinusoidal cell lines, endothelial B46 cells and myofibroblast-like A26 cells (Cell Biology International, 40, 1372-1379, 2016). In this study, we investigated the use of these cell lines as feeder cells that support the proliferation of bovine blood-derived macrophages (BBMs). Notably, the B46 cell line efficiently acts as feeder cells for the propagation of BBMs. Compared with primary cultured vascular endothelial cells, the infinite proliferation ability of B46 cells is more beneficial for preparing confluent feeder layers. In conclusion, this study provides a simple and efficient protocol for the isolation and propagation of BBMs using a primary mixed culture of bovine whole blood with B46 feeder cells. Isolated BBMs are expected to be useful for developing in vitro models for studying the interactions between bovine pathogens and host immune cells.
    MeSH term(s) Cattle ; Animals ; Endothelial Cells ; Macrophages/physiology ; Cell Line ; Phagocytosis ; Feeder Cells
    Language English
    Publishing date 2023-11-03
    Publishing country England
    Document type Journal Article
    ZDB-ID 1143453-3
    ISSN 1095-8355 ; 1065-6995
    ISSN (online) 1095-8355
    ISSN 1065-6995
    DOI 10.1002/cbin.12102
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Enhanced Exciton-Exciton Collisions in an Ultraflat Monolayer MoSe

    Hotta, Takato / Ueda, Akihiko / Higuchi, Shohei / Okada, Mitsuhiro / Shimizu, Tetsuo / Kubo, Toshitaka / Ueno, Keiji / Taniguchi, Takashi / Watanabe, Kenji / Kitaura, Ryo

    ACS nano

    2020  Volume 15, Issue 1, Page(s) 1370–1377

    Abstract: Squeezing bubbles and impurities out of interlayer spaces by applying force through a few-layer graphene capping layer leads to van der Waals heterostructures with the ultraflat structure free from random electrostatic potential arising from charged ... ...

    Abstract Squeezing bubbles and impurities out of interlayer spaces by applying force through a few-layer graphene capping layer leads to van der Waals heterostructures with the ultraflat structure free from random electrostatic potential arising from charged impurities. Without the graphene capping layer, a squeezing process with an AFM tip induces applied-force-dependent charges of Δ
    Language English
    Publishing date 2020-12-23
    Publishing country United States
    Document type Journal Article
    ISSN 1936-086X
    ISSN (online) 1936-086X
    DOI 10.1021/acsnano.0c08642
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Cyclosporine protects from intestinal epithelial injury by modulating butyrate uptake via upregulation of membrane monocarboxylate transporter 1 levels.

    Ota, Shinji / Sakuraba, Hirotake / Hiraga, Hiroto / Yoshida, Shukuko / Satake, Miwa / Akemoto, Yui / Tanaka, Nahoko / Watanabe, Rina / Takato, Maeda / Murai, Yasuhisa / Ueno, Kayo / Niioka, Takenori / Hayakari, Makoto / Ishiguro, Yoh / Fukuda, Shinsaku

    Biochemistry and biophysics reports

    2020  Volume 24, Page(s) 100811

    Abstract: Background and aims: A relationship between treatment outcomes and intestinal microbiota in patients with inflammatory bowel diseases has been demonstrated. Cyclosporine treatment leads to rapid improvement in severe ulcerative colitis. We hypothesized ... ...

    Abstract Background and aims: A relationship between treatment outcomes and intestinal microbiota in patients with inflammatory bowel diseases has been demonstrated. Cyclosporine treatment leads to rapid improvement in severe ulcerative colitis. We hypothesized that the potent effects of cyclosporine would be exerted through relationships between intestinal epithelial cells (IECs) and the host microbiota. The present study was designed to elucidate the effects of cyclosporine on monocarboxylate transporter 1 (MCT1) regulation and butyrate uptake by IECs.
    Methods: Colitis was induced in C57BL6 mice via the administration of 4% dextran sulfate sodium in drinking water, following which body weights, colon lengths, and histological scores were evaluated. To examine the role of butyrate in the protective effects of cyclosporine, MCT1 inhibitor and an antibiotic cocktail was administered and tributyrin (TB; a prodrug of butyrate) was supplemented; MCT1 protein expression and acetylated histone 3 (AcH3) signals in IECs, as well as the MCT1-membrane fraction of Caco-2 cells, were evaluated. To explore butyrate uptake, as s butyrate derivatives, 3-bromopyruvic acid (3-BrPA) and 1-pyrenebutyric acid were used.
    Results: Treatment with cyclosporine inhibited body weight loss and colon length shortening. However, treatment with MCT1 inhibitor and the antibiotic cocktail negated the efficacy of cyclosporine, whereas TB supplementation restored its protective effect. Furthermore, cyclosporine upregulated MCT1 expression in the membrane and the AcH3 signal in IECs, while also inducing higher anti-inflammatory cytokine production compared to that in the vehicle-treated mice. The transcription level of
    Conclusion: Cyclosporine treatment modulates butyrate uptake via the post-transcriptional upregulation of membrane MCT1 levels in IECs.
    Language English
    Publishing date 2020-10-21
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2831046-9
    ISSN 2405-5808 ; 2405-5808
    ISSN (online) 2405-5808
    ISSN 2405-5808
    DOI 10.1016/j.bbrep.2020.100811
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Wheat-bran autolytic peptides containing a branched-chain amino acid attenuate non-alcoholic steatohepatitis via the suppression of oxidative stress and the upregulation of AMPK/ACC in high-fat diet-fed mice.

    Kawaguchi, Takumi / Ueno, Takato / Nogata, Yoichi / Hayakawa, Masako / Koga, Hironori / Torimura, Takuji

    International journal of molecular medicine

    2017  Volume 39, Issue 2, Page(s) 407–414

    Abstract: Whole-wheat intake is known to reduce the risk of metabolic syndrome. However, the active component remains unclear. Recently, we identified bioactive peptides [leucine-arginine-proline (LRP) and leucine-glutamine‑proline (LQP)] from wheat bran autolytic ...

    Abstract Whole-wheat intake is known to reduce the risk of metabolic syndrome. However, the active component remains unclear. Recently, we identified bioactive peptides [leucine-arginine-proline (LRP) and leucine-glutamine‑proline (LQP)] from wheat bran autolytic hydrolysate. The present study aimed to investigate the effects of LRP and LQP on non-alcoholic steatohepatitis (NASH) in a mouse model. We also evaluated the effects of these peptides on oxidative stress and on the AMP-activated protein kinase (AMPK) signaling pathway, two major pathogenic factors of NASH. Seven‑week-old male C57BL/6 mice were fed a high-fat diet for 10 weeks and administered water supplemented with 0.05% LRP, 0.20% LRP, 0.05% LQP, or 0.20% LQP (each n=5) or distilled water (control; n=5) ad libitum. Oxidative stress was evaluated by measuring the serum levels of diacron reactive oxygen metabolite (d-ROM) and biological antioxidant potential (BAP). Hepatic expression of phosphorylated AMPK and phosphorylated acetyl-CoA carboxylase (ACC) were evaluated by immunoblotting. The result showed that non‑alcoholic fatty liver disease activity score was significantly decreased in all types of treatment. Serum d-ROM levels were significantly decreased in the 0.20% LRP group, but not in the 0.05% LRP, 0.05% LQP, and 0.20% LQP groups. Serum BAP levels were significantly increased in the 0.05% LRP and 0.20% LRP groups, but not in the 0.05% LQP and 0.20% LQP groups. Immunoblotting analysis revealed that the expression of phospho-AMPK was increased whereas that of phospho-ACC was decreased in the 0.20% LQP group. In conclusion, we demonstrated that both LRP and LQP alleviated the severity of NASH in a high-fat diet-induced NASH mouse model. In addition, we showed that LRP and LQP modulated oxidative stress and upregulated AMPK/ACC, respectively. Thus, LRP and LQP may constitute clinically applicable therapeutic agents for NASH.
    MeSH term(s) AMP-Activated Protein Kinases/metabolism ; Acetyl-CoA Carboxylase/metabolism ; Amino Acids, Branched-Chain/metabolism ; Animals ; Antioxidants/metabolism ; Body Weight ; Diet, High-Fat/adverse effects ; Disease Models, Animal ; Liver/metabolism ; Liver/pathology ; Male ; Mice ; Non-alcoholic Fatty Liver Disease/etiology ; Non-alcoholic Fatty Liver Disease/metabolism ; Non-alcoholic Fatty Liver Disease/pathology ; Oxidative Stress ; Peptides/chemistry ; Peptides/metabolism ; Reactive Oxygen Species/metabolism ; Triticum/chemistry
    Chemical Substances Amino Acids, Branched-Chain ; Antioxidants ; Peptides ; Reactive Oxygen Species ; AMP-Activated Protein Kinases (EC 2.7.11.31) ; Acetyl-CoA Carboxylase (EC 6.4.1.2)
    Language English
    Publishing date 2017-02
    Publishing country Greece
    Document type Journal Article
    ZDB-ID 1444428-8
    ISSN 1791-244X ; 1107-3756
    ISSN (online) 1791-244X
    ISSN 1107-3756
    DOI 10.3892/ijmm.2016.2831
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Regulation of matrix metalloproteinase-1 and alpha-smooth muscle actin expression by interleukin-1 alpha and tumour necrosis factor alpha in hepatic stellate cells.

    Inoue, Asami / Obayashi, Kenichi / Sonoda, Yuka / Nakamura, Anna / Ueno, Takato / Kuhara, Satoru / Tashiro, Kosuke

    Cytotechnology

    2016  Volume 69, Issue 3, Page(s) 461–468

    Abstract: Hepatic stellate cells (HSCs) are key players in liver fibrosis and regeneration via collagen degradation and synthesis. These phenomena involve inflammatory cytokines released from non-parenchymal liver cells such as Kupffer cells. Although the effects ... ...

    Abstract Hepatic stellate cells (HSCs) are key players in liver fibrosis and regeneration via collagen degradation and synthesis. These phenomena involve inflammatory cytokines released from non-parenchymal liver cells such as Kupffer cells. Although the effects of individual cytokines on many cell types have been investigated in various conditions, such as inflammation and tissue fibrosis, investigating the effect of combined cytokines would further our understanding of the regulatory mechanisms in tissue fibrosis. Here, we report the effect of multiple cytokine combinations on primary HSCs. We first examined the effect of individual cytokines and then the simultaneous exposure of different cytokines, including interleukin-6 (IL-6), IL-1 alpha (IL-1α), platelet-derived growth factor (PDGF), tumour necrosis factor-alpha (TNF-α) and transforming growth factor-beta (TGF-β), on matrix metalloproteinase-1 (MMP1) gene expression in primary HSCs. We observed that the combination of all five cytokines induced higher levels of MMP1 gene expression. Of these cytokines, TNF-α and IL-1α were found to be the key cytokines for not only inducing MMP1 expression, but also increasing α-smooth muscle actin gene expression. In conclusion, the combined treatment of TNF-α and IL-1α on HSCs had an enhanced effect on the expression of the fibrotic genes, MMP1 and α-smooth muscle actin, so appears to be an important regulator for tissue regeneration. This finding suggests that stimulation with combined anti-fibrotic cytokines is a potential approach in the development of a novel therapy for the recovery of liver fibrosis.
    Language English
    Publishing date 2016-01-29
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1035772-5
    ISSN 0920-9069
    ISSN 0920-9069
    DOI 10.1007/s10616-016-9948-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Cyclosporine protects from intestinal epithelial injury by modulating butyrate uptake via upregulation of membrane monocarboxylate transporter 1 levels

    Shinji Ota / Hirotake Sakuraba / Hiroto Hiraga / Shukuko Yoshida / Miwa Satake / Yui Akemoto / Nahoko Tanaka / Rina Watanabe / Maeda Takato / Yasuhisa Murai / Kayo Ueno / Takenori Niioka / Makoto Hayakari / Yoh Ishiguro / Shinsaku Fukuda

    Biochemistry and Biophysics Reports, Vol 24, Iss , Pp 100811- (2020)

    2020  

    Abstract: Background and aims: A relationship between treatment outcomes and intestinal microbiota in patients with inflammatory bowel diseases has been demonstrated. Cyclosporine treatment leads to rapid improvement in severe ulcerative colitis. We hypothesized ... ...

    Abstract Background and aims: A relationship between treatment outcomes and intestinal microbiota in patients with inflammatory bowel diseases has been demonstrated. Cyclosporine treatment leads to rapid improvement in severe ulcerative colitis. We hypothesized that the potent effects of cyclosporine would be exerted through relationships between intestinal epithelial cells (IECs) and the host microbiota. The present study was designed to elucidate the effects of cyclosporine on monocarboxylate transporter 1 (MCT1) regulation and butyrate uptake by IECs. Methods: Colitis was induced in C57BL6 mice via the administration of 4% dextran sulfate sodium in drinking water, following which body weights, colon lengths, and histological scores were evaluated. To examine the role of butyrate in the protective effects of cyclosporine, MCT1 inhibitor and an antibiotic cocktail was administered and tributyrin (TB; a prodrug of butyrate) was supplemented; MCT1 protein expression and acetylated histone 3 (AcH3) signals in IECs, as well as the MCT1-membrane fraction of Caco-2 cells, were evaluated. To explore butyrate uptake, as s butyrate derivatives, 3-bromopyruvic acid (3-BrPA) and 1-pyrenebutyric acid were used. Results: Treatment with cyclosporine inhibited body weight loss and colon length shortening. However, treatment with MCT1 inhibitor and the antibiotic cocktail negated the efficacy of cyclosporine, whereas TB supplementation restored its protective effect. Furthermore, cyclosporine upregulated MCT1 expression in the membrane and the AcH3 signal in IECs, while also inducing higher anti-inflammatory cytokine production compared to that in the vehicle-treated mice. The transcription level of MCT1 mRNA in IECs and Caco-2 cells did not increase with cyclosporine treatment; however, cyclosporine treatment increased membrane MCT1 expression in these cells and uptake of butyrate derivative. Conclusion: Cyclosporine treatment modulates butyrate uptake via the post-transcriptional upregulation of membrane MCT1 levels in IECs.
    Keywords Butyrate ; Colitis ; Cyclosporine ; Intestinal epithelial cells ; Monocarboxylate transporter 1 ; Biology (General) ; QH301-705.5 ; Biochemistry ; QD415-436
    Subject code 610
    Language English
    Publishing date 2020-12-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article: [Type III procollagen-N-peptide (P III P)].

    Ueno, Takato / Tanikawa, Kyuichi

    Nihon rinsho. Japanese journal of clinical medicine

    2004  Volume 62 Suppl 11, Page(s) 314–316

    MeSH term(s) Humans ; Liver Diseases/blood ; Peptide Fragments/blood ; Procollagen/blood
    Chemical Substances Peptide Fragments ; Procollagen ; procollagen Type III-N-terminal peptide
    Language Japanese
    Publishing date 2004-11
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 390903-7
    ISSN 0047-1852
    ISSN 0047-1852
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Green tea with high-density catechins improves liver function and fat infiltration in non-alcoholic fatty liver disease (NAFLD) patients: a double-blind placebo-controlled study.

    Sakata, Ryuichiro / Nakamura, Toru / Torimura, Takuji / Ueno, Takato / Sata, Michio

    International journal of molecular medicine

    2013  Volume 32, Issue 5, Page(s) 989–994

    Abstract: Catechins, a major component of green tea extract, have anti-hyperlipidemic effects. The present study investigated the effects of consumption of green tea with high-density catechins in non-alcoholic fatty liver disease (NAFLD) patients. Seventeen ... ...

    Abstract Catechins, a major component of green tea extract, have anti-hyperlipidemic effects. The present study investigated the effects of consumption of green tea with high-density catechins in non-alcoholic fatty liver disease (NAFLD) patients. Seventeen patients with NAFLD consumed green tea with high-density catechins, low-density catechins or a placebo for 12 weeks in a randomized double-blind study. Ultrasonography and computed tomography (CT) were performed at baseline and after 12 weeks. Serum alanine aminotransferase (ALT) levels and urine 8-isoprostane were monitored and compared to baseline at 4, 8 and 12 weeks. Body fat was significantly decreased in the high-density catechin group compared with the placebo and low-density catechin groups after 12 weeks of consumption. All the patients in the high-density catechin group showed a significantly improved liver-to-spleen CT attenuation ratio compared with the placebo and low-density catechin groups after 12 weeks of consumption. The high-density catechin group significantly decreased serum ALT levels and reduced urinary 8-isoprostane excretion compared with the placebo and low-density catechin group after 12 weeks of consumption. Based on a reduced proportion of body fat as estimated by bioimpedance measurement, increased liver-to-spleen CT attenuation ratio, decreased serum ALT levels and reduced urinary 8-isoprostane excretion, we concluded that 12 weeks of 700 ml per day of green tea containing >1 g catechin improved liver fat content and inflammation by reducing oxidative stress in patients with NAFLD.
    MeSH term(s) Double-Blind Method ; Fatty Liver/drug therapy ; Female ; Humans ; Liver/drug effects ; Male ; Middle Aged ; Non-alcoholic Fatty Liver Disease ; Plant Extracts/therapeutic use ; Tea/chemistry
    Chemical Substances Plant Extracts ; Tea
    Language English
    Publishing date 2013-11
    Publishing country Greece
    Document type Journal Article ; Randomized Controlled Trial ; Research Support, Non-U.S. Gov't
    ZDB-ID 1444428-8
    ISSN 1791-244X ; 1107-3756
    ISSN (online) 1791-244X
    ISSN 1107-3756
    DOI 10.3892/ijmm.2013.1503
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Does hepatocellular carcinoma develop after treatment of Wegener's granulomatosis with cyclophosphamide?

    Ueno, Takato / Sata, Michio

    Internal medicine (Tokyo, Japan)

    2003  Volume 42, Issue 5, Page(s) 379–380

    MeSH term(s) Carcinoma, Hepatocellular/chemically induced ; Cyclophosphamide/adverse effects ; Cyclophosphamide/therapeutic use ; Granulomatosis with Polyangiitis/drug therapy ; Humans ; Immunosuppressive Agents/adverse effects ; Immunosuppressive Agents/therapeutic use ; Liver Neoplasms/chemically induced ; Mutagens/adverse effects ; Mutagens/therapeutic use
    Chemical Substances Immunosuppressive Agents ; Mutagens ; Cyclophosphamide (8N3DW7272P)
    Language English
    Publishing date 2003-05-30
    Publishing country Japan
    Document type Comment ; Editorial
    ZDB-ID 32371-8
    ISSN 0918-2918 ; 0021-5120
    ISSN 0918-2918 ; 0021-5120
    DOI 10.2169/internalmedicine.42.379
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Branched-Chain Amino Acid-Rich Supplements Containing Microelements Have Antioxidant Effects on Nonalcoholic Steatohepatitis in Mice.

    Tanaka, Hiroaki / Fukahori, Suguru / Baba, Shinji / Ueno, Takato / Sivakumar, Ramadoss / Yagi, Minoru / Asagiri, Kimio / Ishii, Shinji / Tanaka, Yoshiaki

    JPEN. Journal of parenteral and enteral nutrition

    2016  Volume 40, Issue 4, Page(s) 519–528

    Abstract: Background: The aim of the present study was to elucidate whether the administration of antioxidant-rich nutrients, including branched-chain amino acids (BCAAs), microelements, and vitamins, both alone and in combination, has a positive impact on liver ... ...

    Abstract Background: The aim of the present study was to elucidate whether the administration of antioxidant-rich nutrients, including branched-chain amino acids (BCAAs), microelements, and vitamins, both alone and in combination, has a positive impact on liver function in a nonalcoholic steatohepatitis (NASH) mouse model and identify the mechanisms underlying these effects.
    Methods: Seven-week-old male KKAy mice fed a methionine- and choline-deficient diet (MCD) for 4 weeks were divided into 7 groups and fed the following planned diets for another 4 weeks: group A (normal diet), group B (MCD; control), group C (MCD with rich microelements), group D (MCD with rich BCAAs), group E (MCD with rich microelements and BCAAs), and group F (MCD with rich microelements, BCAAs, and vitamins). We then conducted biochemical assays, histological analyses, immunohistochemistry for 8-hydroxy-2'-deoxyguanosine (8-OHdG) and 4-hydroxy-2'-nonenal (4-HNE), and Western blotting for insulin glucose signaling, lipid metabolism, and endoplasmic reticulum (ER) stress-related signaling in liver specimens obtained from mice in each group.
    Results: The morphometric grades of all NASH-related findings and the mean degree of 8-OHdG immunolocalization in groups D-F were significantly lower than those observed in group B. The expression levels of insulin receptor β subunit (IRβ) and p-elF in groups E and F and those of phosphatidyl-inositol 3 kinase (PI3K85), p-AcelCoA, and PERK in group F were similar to those noted in group A.
    Conclusions: The administration of a combination of antioxidant-rich nutrients, including BCAAs and microelements, is likely to suppress the progression of NASH by reducing oxidative stress, primarily via the downregulation of the ER stress pathway.
    Language English
    Publishing date 2016-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 800861-9
    ISSN 0148-6071
    ISSN 0148-6071
    DOI 10.1177/0148607114555160
    Database MEDical Literature Analysis and Retrieval System OnLINE

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