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  1. AU="Hiroki Ishikawa"
  2. AU=Fischer Lorenz
  3. AU="Hooberman, B H"
  4. AU="Vaid, Nidhi"
  5. AU="Xiao Han"
  6. AU="Stuart G. Tangye"
  7. AU="Yao-Zhong Zhao"
  8. AU="Chern, Chang-Ming"
  9. AU="Floeter, Jens"
  10. AU="Wijnen, Petal"
  11. AU="Saravanamuthu, Pira"
  12. AU="Kalpana Deepa Priya Dorayappan"
  13. AU="Xiao, Hongkui"
  14. AU="Lali, Arvind M"
  15. AU="Kim, Hyojeong"
  16. AU="Nasseri, Saeed"
  17. AU="Kluge"
  18. AU="Bierbaumer, Lisa"
  19. AU="Rashid, Muhammad"
  20. AU="Huang, Chiun-Sheng"
  21. AU="Shevchuk, O O"
  22. AU="Mulvihill, Emily"
  23. AU="Gandhi, Adarsh"
  24. AU="Zhao, Chuanrui"
  25. AU="Shelley Wiart"
  26. AU="Lydia E. Wroblewski" AU="Lydia E. Wroblewski"
  27. AU="Paterson, Ross"
  28. AU="Alexander Marx"
  29. AU="Robinson, Jill"
  30. AU="Mitchell, Adam W M"
  31. AU="Ingham, Jesse R"

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  1. Artikel ; Online: HIF-PHD inhibitor regulates the function of group2 innate lymphoid cells and polarization of M2 macrophages

    Ryuichi Nagashima / Hiroki Ishikawa / Yoshihiro Kuno / Chikara Kohda / Masayuki Iyoda

    Scientific Reports, Vol 13, Iss 1, Pp 1-

    2023  Band 10

    Abstract: Abstract Hypoxia-inducible factor-prolyl hydroxylase (HIF-PHD) inhibitors are therapeutic agents for renal anemia that work through HIF2-mediated upregulation of erythropoietin (EPO) and have also been reported to suppress renal fibrosis. Group 2 innate ... ...

    Abstract Abstract Hypoxia-inducible factor-prolyl hydroxylase (HIF-PHD) inhibitors are therapeutic agents for renal anemia that work through HIF2-mediated upregulation of erythropoietin (EPO) and have also been reported to suppress renal fibrosis. Group 2 innate lymphoid cells (ILC2s) have been proven to be involved in the pathogenesis of fibrosis in various organs, including the kidney. However, the relationship between the HIF pathway, renal fibrosis, and kidney ILC2s remains unclear. In the present study, we found that HIF activation by HIF-PHD inhibitors suppressed type 2 cytokine production from kidney ILC2s. The enhanced HIF pathway downregulated the IL-33 receptor ST2L on ILC2s, and phosphorylation of downstream p38 MAPK was attenuated. M2 macrophages that promote renal fibrosis were polarized by ILC2 supernatants, but reduced cytokine production from ILC2s treated with HIF-PHD inhibitors suppressed this polarization. Our findings suggest that HIF-PHD inhibitors are potential therapeutic agents for renal fibrosis that are mediated by the alteration of ILC2 function.
    Schlagwörter Medicine ; R ; Science ; Q
    Thema/Rubrik (Code) 616
    Sprache Englisch
    Erscheinungsdatum 2023-02-01T00:00:00Z
    Verlag Nature Portfolio
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  2. Artikel ; Online: Transcriptional Regulation of Differentiation and Functions of Effector T Regulatory Cells

    Shin-ichi Koizumi / Hiroki Ishikawa

    Cells, Vol 8, Iss 8, p

    2019  Band 939

    Abstract: Foxp3-expressing regulatory T (Treg) cells can suppress the activity of various types of immune cells and play key roles in the maintenance of self-tolerance and in the regulation of immune responses against pathogens and tumor cells. Treg cells consist ... ...

    Abstract Foxp3-expressing regulatory T (Treg) cells can suppress the activity of various types of immune cells and play key roles in the maintenance of self-tolerance and in the regulation of immune responses against pathogens and tumor cells. Treg cells consist of heterogeneous subsets that have distinct phenotypes and functions. Upon antigen stimulation, naïve-like thymus-derived Treg cells, which circulate in secondary lymphoid organs, can differentiate into effector Treg (eTreg) cells and migrate to and control immune homeostasis of peripheral tissues. eTreg cells are heterogeneous in terms of their ability to localize to specific tissues and suppress particular types of immune responses. Differentiation and function of diverse eTreg subsets are regulated by a variety of transcription factors that are activated by antigens and cytokines. In this article, we review the current understanding of the transcriptional regulation of differentiation and function of eTreg cells.
    Schlagwörter Treg subsets ; effector Treg ; transcriptional regulation ; Biology (General) ; QH301-705.5
    Thema/Rubrik (Code) 570
    Sprache Englisch
    Erscheinungsdatum 2019-08-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  3. Artikel ; Online: Type V Tibial Tubercle Avulsion Fracture with Suspected Complication of Anterior Cruciate Ligament Injury

    Hiroki Okamura / Hiroki Ishikawa / Takuya Ohno / Shogo Fujita / Kei Nagasaki / Katsunori Inagaki / Yoshifumi Kudo

    Medicina, Vol 59, Iss 1061, p

    A Case Report

    2023  Band 1061

    Abstract: Background and Objectives : Type V tibial tubercle avulsion fractures are extremely rare; therefore, information on them remains limited. Furthermore, although these fractures are intra-articular, to the best of our knowledge, there are no reports on ... ...

    Abstract Background and Objectives : Type V tibial tubercle avulsion fractures are extremely rare; therefore, information on them remains limited. Furthermore, although these fractures are intra-articular, to the best of our knowledge, there are no reports on their assessment via magnetic resonance imaging (MRI) or arthroscopy. Accordingly, this is the first report to describe the case of a patient undergoing detailed evaluation via MRI and arthroscopy. Case Presentation : A 13-year-old male adolescent athlete jumped while playing basketball, experienced discomfort and pain at the front of his knee, and fell down. He was transported to the emergency room by ambulance after he was unable to walk. The radiographic examination revealed a Type Ⅴ tibial tubercle avulsion fracture that was displaced. In addition, an MRI scan revealed a fracture line extending to the attachment of the anterior cruciate ligament (ACL); moreover, high MRI intensity and swelling due to ACL were observed, suggesting an ACL injury. On day 4 of the injury, open reduction and internal fixation were performed. Furthermore, 4 months after surgery, bone fusion was confirmed, and metal removal was performed. Simultaneously, an MRI scan obtained at the time of injury revealed findings suggestive of ACL injury; therefore, an arthroscopy was performed. Notably, no parenchymal ACL injury was observed, and the meniscus was intact. The patient returned to sports 6 months postoperatively. Conclusion : Type V tibial tubercle avulsion fractures are known to be extremely rare. Based on our report, we suggest that MRI should be performed without hesitation if intra-articular injury is suspected.
    Schlagwörter tibial tubercle avulsion fractures ; anterior cruciate ligament ; knee ; sports injury ; Medicine (General) ; R5-920
    Thema/Rubrik (Code) 610 ; 796
    Sprache Englisch
    Erscheinungsdatum 2023-06-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  4. Artikel ; Online: Cardiac interaction between mother and infant

    Ayami Suga / Maki Uraguchi / Akiko Tange / Hiroki Ishikawa / Hideki Ohira

    Scientific Reports, Vol 9, Iss 1, Pp 1-

    enhancement of heart rate variability

    2019  Band 9

    Abstract: Abstract The vagal activity of infants is represented by heart rate variability (HRV) and associated with both growth and socioemotional development. The enhancement of an infant’s vagal tone activity might be beneficial for development. This study ... ...

    Abstract Abstract The vagal activity of infants is represented by heart rate variability (HRV) and associated with both growth and socioemotional development. The enhancement of an infant’s vagal tone activity might be beneficial for development. This study explored whether HRV in infants aged 3–8 months can be enhanced by influencing HRV in mothers (40 dyads). The power of the low frequency (LF) component of maternal HRV was facilitated using slow-paced breathing. We investigated whether the change in maternal HRV affected the LF component in infants held by their mothers. In older infants (N = 14, 6–8 months) the LF power showed an increase during maternal paced breathing, whereas a delayed increase occurred after termination of maternal paced breathing in younger infants (N = 16, 3–5 months). These results show that the effects of maternal cardiac activity on the infant’s HRV are age-dependent. This age-dependent reactivity of the infant’s HRV could be due to the development of the inner model in infants which regulates physiological functions, including cardiac activity. This finding might help develop efficient methods for enhancing vagal nerve activity in infants.
    Schlagwörter Medicine ; R ; Science ; Q
    Thema/Rubrik (Code) 610
    Sprache Englisch
    Erscheinungsdatum 2019-12-01T00:00:00Z
    Verlag Nature Publishing Group
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  5. Artikel ; Online: Phosphoenolpyruvate regulates the Th17 transcriptional program and inhibits autoimmunity

    Tsung-Yen Huang / Masato Hirota / Daiki Sasaki / Rajkumar Singh Kalra / Hsiao-Chiao Chien / Miho Tamai / Shukla Sarkar / Yang Mi / Mio Miyagi / Yu Seto / Hiroki Ishikawa

    Cell Reports, Vol 42, Iss 3, Pp 112205- (2023)

    2023  

    Abstract: Summary: Aerobic glycolysis, a metabolic pathway essential for effector T cell survival and proliferation, regulates differentiation of autoimmune T helper (Th) 17 cells, but the mechanism underlying this regulation is largely unknown. Here, we identify ... ...

    Abstract Summary: Aerobic glycolysis, a metabolic pathway essential for effector T cell survival and proliferation, regulates differentiation of autoimmune T helper (Th) 17 cells, but the mechanism underlying this regulation is largely unknown. Here, we identify a glycolytic intermediate metabolite, phosphoenolpyruvate (PEP), as a negative regulator of Th17 differentiation. PEP supplementation or inhibition of downstream glycolytic enzymes in differentiating Th17 cells increases intracellular PEP levels and inhibits interleukin (IL)-17A expression. PEP supplementation inhibits expression of signature molecules for Th17 and Th2 cells but does not significantly affect glycolysis, cell proliferation, or survival of T helper cells. Mechanistically, PEP binds to JunB and inhibits DNA binding of the JunB/basic leucine zipper transcription factor ATF-like (BATF)/interferon regulatory factor 4 (IRF4) complex, thereby modulating the Th17 transcriptional program. Furthermore, daily administration of PEP to mice inhibits generation of Th17 cells and ameliorates Th17-dependent autoimmune encephalomyelitis. These data demonstrate that PEP links aerobic glycolysis to the Th17 transcriptional program, suggesting the therapeutic potential of PEP for autoimmune diseases.
    Schlagwörter CP: Immunology ; Biology (General) ; QH301-705.5
    Thema/Rubrik (Code) 570
    Sprache Englisch
    Erscheinungsdatum 2023-03-01T00:00:00Z
    Verlag Elsevier
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  6. Artikel ; Online: NKT cells are responsible for the clearance of murine norovirus through the virus-specific secretory IgA pathway

    Hiroki Ishikawa / Satoshi Ino / Toshiko Yamochi / Hiraku Sasaki / Takahiro Kobayashi / Chikara Kohda / Masafumi Takimoto / Kazuo Tanaka

    Biochemistry and Biophysics Reports, Vol 21, Iss , Pp - (2020)

    2020  

    Abstract: Norovirus infection cause epidemic nonbacterial gastroenteritis in patients. The immune mechanisms responsible for the clearance of virus are not completely understood. We examined whether NKT cells are effective against norovirus infection using CD1d KO ...

    Abstract Norovirus infection cause epidemic nonbacterial gastroenteritis in patients. The immune mechanisms responsible for the clearance of virus are not completely understood. We examined whether NKT cells are effective against norovirus infection using CD1d KO mice. The body weights of 4-weeks-old CD1d KO mice that were infected with murine norovirus-S7 (MNV-S7) were significantly lower than those of non-infected CD1d KO mice. On the other hand, the body weights of infected WT mice were comparable to those of non-infected WT mice. Correspondingly, CD1d KO mice had an almost 1000-fold higher MNV-S7 burden in the intestine after infection in comparison to WT mice. The mechanism responsible for the insufficient MNV-S7 clearance in CD1d KO mice was attributed to reduced IFN-γ production early during MNV-S7 infection. In addition, the markedly impaired IL-4 production in CD1d KO mice resulted in an impaired MNV-S7-specific secretory IgA production after MNV-S7 infection which is associated with mucosal immunity. Thus, the present results provide evidence that NKT cells play an essential role in MNV-S7 clearance. Keywords: Murine norovirus-S7, NKT cells, Secretory IgA, Delayed growth
    Schlagwörter Biology (General) ; QH301-705.5 ; Biochemistry ; QD415-436
    Thema/Rubrik (Code) 570
    Sprache Englisch
    Erscheinungsdatum 2020-03-01T00:00:00Z
    Verlag Elsevier
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  7. Artikel: Asymmetric Diels–Alder Reaction Involving Dynamic Enantioselective Crystallization

    Uemura, Naohiro / Hiroki Ishikawa / Masami Sakamoto / Seiya Toyoda / Takashi Mino / Yasushi Yoshida / Yoshio Kasashima

    Journal of organic chemistry. 2018 May 28, v. 83, no. 16

    2018  

    Abstract: Asymmetric Diels–Alder reaction was achieved under achiral conditions. Reaction of prochiral 2-methylfuran and N-phenylmaleimide in heptane or hexane solution at 80 °C efficiently gave a conglomerate crystal of exo-type Diels–Alder adduct selectively, ... ...

    Abstract Asymmetric Diels–Alder reaction was achieved under achiral conditions. Reaction of prochiral 2-methylfuran and N-phenylmaleimide in heptane or hexane solution at 80 °C efficiently gave a conglomerate crystal of exo-type Diels–Alder adduct selectively, and continuous suspension of the reaction mixture with glass beads promoted attrition-enhanced deracemization, leading to an optically active exo-adduct in 90% ee.
    Schlagwörter chemical structure ; crystallization ; cycloaddition reactions ; enantioselectivity ; glass ; heptane ; hexane ; organic chemistry
    Sprache Englisch
    Erscheinungsverlauf 2018-0528
    Umfang p. 9300-9304.
    Erscheinungsort American Chemical Society
    Dokumenttyp Artikel
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.8b01273
    Datenquelle NAL Katalog (AGRICOLA)

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  8. Artikel: Stereoselective Photodimerization of 3-Arylindenones in Solution and in the Solid State

    Uemura, Naohiro / Hiroki Ishikawa / Masami Sakamoto / Naoki Tamura / Takashi Mino / Yasushi Yoshida / Yoshio Kasashima

    Journal of organic chemistry. 2018 Feb. 16, v. 83, no. 4

    2018  

    Abstract: Photodimerization of 3-arylindenones in solution and in the solid state was examined. Irradiation of 3-arylindenones in benzene exclusively gave C2-symmetric anti-HH cyclobutane dimers in good yields. In contrast, photolysis in the solid state afforded ... ...

    Abstract Photodimerization of 3-arylindenones in solution and in the solid state was examined. Irradiation of 3-arylindenones in benzene exclusively gave C2-symmetric anti-HH cyclobutane dimers in good yields. In contrast, photolysis in the solid state afforded syn-HH cyclobutane dimers efficiently, which was considerably influenced by the molecular arrangement in the crystal lattice.
    Schlagwörter benzene ; chemical structure ; irradiation ; organic chemistry ; photolysis ; solids ; stereoselectivity
    Sprache Englisch
    Erscheinungsverlauf 2018-0216
    Umfang p. 2256-2262.
    Erscheinungsort American Chemical Society
    Dokumenttyp Artikel
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.7b03147
    Datenquelle NAL Katalog (AGRICOLA)

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  9. Artikel: Isolation and analysis of a stromule‐overproducing Arabidopsis mutant suggest the role of PARC6 in plastid morphology maintenance in the leaf epidermis

    Itoh, Ryuuichi D / Hiroki Ishikawa / Kohdai P. Nakajima / Shota Moriyama / Makoto T. Fujiwara

    Physiologia plantarum. 2018 Apr., v. 162, no. 4

    2018  

    Abstract: Stromules, or stroma‐filled tubules, are thin extensions of the plastid envelope membrane that are most frequently observed in undifferentiated or non‐mesophyll cells. The formation of stromules is developmentally regulated and responsive to biotic and ... ...

    Abstract Stromules, or stroma‐filled tubules, are thin extensions of the plastid envelope membrane that are most frequently observed in undifferentiated or non‐mesophyll cells. The formation of stromules is developmentally regulated and responsive to biotic and abiotic stress; however, the physiological roles and molecular mechanisms of the stromule formation remain enigmatic. Accordingly, we attempted to obtain Arabidopsis thaliana mutants with aberrant stromule biogenesis in the leaf epidermis. Here, we characterize one of the obtained mutants. Plastids in the leaf epidermis of this mutant were giant and pleomorphic, typically having one or more constrictions that indicated arrested plastid division, and usually possessed one or more extremely long stromules, which indicated the deregulation of stromule formation. Genetic mapping, whole‐genome resequencing‐aided exome analysis, and gene complementation identified PARC6/CDP1/ARC6H, which encodes a vascular plant‐specific, chloroplast division site‐positioning factor, as the causal gene for the stromule phenotype. Yeast two‐hybrid assay and double mutant analysis also identified a possible interaction between PARC6 and MinD1, another known chloroplast division site‐positioning factor, during the morphogenesis of leaf epidermal plastids. To the best of our knowledge, PARC6 is the only known A. thaliana chloroplast division factor whose mutations more extensively affect the morphology of plastids in non‐mesophyll tissue than in mesophyll tissue. Therefore, the present study demonstrates that PARC6 plays a pivotal role in the morphology maintenance and stromule regulation of non‐mesophyll plastids.
    Schlagwörter Arabidopsis thaliana ; abiotic stress ; biogenesis ; chloroplasts ; chromosome mapping ; epidermis (plant) ; genes ; leaves ; mesophyll ; morphogenesis ; mutants ; mutation ; phenotype ; two hybrid system techniques
    Sprache Englisch
    Erscheinungsverlauf 2018-04
    Umfang p. 479-494.
    Erscheinungsort Blackwell Publishing Ltd
    Dokumenttyp Artikel
    Anmerkung JOURNAL ARTICLE
    ZDB-ID 2020837-6
    ISSN 1399-3054 ; 0031-9317
    ISSN (online) 1399-3054
    ISSN 0031-9317
    DOI 10.1111/ppl.12648
    Datenquelle NAL Katalog (AGRICOLA)

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  10. Artikel ; Online: A Survey of Vaccine-Induced Measles IgG Antibody Titer to Verify Temporal Changes in Response to Measles Vaccination in Young Adults

    Hiraku Sasaki / Tomoko Fukunaga / Ai Asano / Yoshio Suzuki / Yuko Nakanishi / Junzi Kondo / Hiroki Ishikawa / Nobuto Shibata

    Vaccines, Vol 7, Iss 3, p

    2019  Band 118

    Abstract: In Japan, sporadic measles cases increased rapidly in 2019 compared to the past six years. To clarify the persistence of immunity against measles in young adults, this study explored the persistence of immunoglobulin G (IgG) antibody titers against the ... ...

    Abstract In Japan, sporadic measles cases increased rapidly in 2019 compared to the past six years. To clarify the persistence of immunity against measles in young adults, this study explored the persistence of immunoglobulin G (IgG) antibody titers against the measles virus in 17- to 24-year-old young participants who reside in the Chiba prefecture of Japan. Measles-specific IgG antibody titers, determined by enzyme immunoassay in serum samples collected from 506 participants, were assessed through statistical analyses. Multivariable regression analysis revealed that the distribution of measles IgG antibody titers was significantly correlated with a medical history of measles ( P < 0.05), while there was no significant correlation between the number of vaccinations related to measles IgG titers. Furthermore, measles IgG titers tended to decrease, as revealed by the temporal change in IgG titers, during the elapsed period after the last vaccination ( P = 0.08). These results indicate that periodic vaccination against measles is required to prevent sporadic measles infection in young and older adults.
    Schlagwörter measles ; IgG antibody titers ; vaccination ; Medicine ; R
    Sprache Englisch
    Erscheinungsdatum 2019-09-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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