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Asahi T, Nakagawa K, Ishikawa K, Takanabe A, Koshima H. Chiroptical Study on Organic Crystals Using the G-HAUP. J SYN ORG CHEM JPN 2017. [DOI: 10.5059/yukigoseikyokaishi.75.530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Aoki K, Hayashi M, Kouno T, Umehara S, Sakaguchi H, Washida K, Ishikawa K. An Outbreak of Suspected Food Poisoning Related to Consumption of Undercooked Deer Meat in Shiga Prefecture. ACTA ACUST UNITED AC 2017. [DOI: 10.5803/jsfm.34.166] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Ihara T, Hosokawa Y, Kumazawa K, Ishikawa K, Fujimoto J, Yamamoto M, Muramkami T, Goshima N, Ito E, Watanabe S, Semba K. An in vivo screening system to identify tumorigenic genes. Oncogene 2016; 36:2023-2029. [PMID: 27694896 DOI: 10.1038/onc.2016.351] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 08/11/2016] [Accepted: 08/15/2016] [Indexed: 12/26/2022]
Abstract
Screening for oncogenes has mostly been performed by in vitro transformation assays. However, some oncogenes might not exhibit their transforming activities in vitro unless putative essential factors from in vivo microenvironments are adequately supplied. Here, we have developed an in vivo screening system that evaluates the tumorigenicity of target genes. This system uses a retroviral high-efficiency gene transfer technique, a large collection of human cDNA clones corresponding to ~70% of human genes and a luciferase-expressing immortalized mouse mammary epithelial cell line (NMuMG-luc). From 845 genes that were highly expressed in human breast cancer cell lines, we focused on 205 genes encoding membrane proteins and/or kinases as that had the greater possibility of being oncogenes or drug targets. The 205 genes were divided into five subgroups, each containing 34-43 genes, and then introduced them into NMuMG-luc cells. These cells were subcutaneously injected into nude mice and monitored for tumor development by in vivo imaging. Tumors were observed in three subgroups. Using DNA microarray analyses and individual tumorigenic assays, we found that three genes, ADORA2B, PRKACB and LPAR3, were tumorigenic. ADORA2B and LPAR3 encode G-protein-coupled receptors and PRKACB encodes a protein kinase A catalytic subunit. Cells overexpressing ADORA2B, LPAR3 or PRKACB did not show transforming phenotypes in vitro, suggesting that transformation by these genes requires in vivo microenvironments. In addition, several clinical data sets, including one for breast cancer, showed that the expression of these genes correlated with lower overall survival rate.
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Okuda N, Fujii T, Inoue H, Ishikawa K, Hoshino T. Enhancing cellulase production by overexpression of xylanase regulator protein gene, xlnR, in Talaromyces cellulolyticus cellulase hyperproducing mutant strain. Biosci Biotechnol Biochem 2016; 80:2065-8. [DOI: 10.1080/09168451.2016.1189315] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Abstract
We obtained strains with the xylanase regulator gene, xlnR, overexpressed (HXlnR) and disrupted (DXlnR) derived from Talaromyces cellulolyticus strain C-1, which is a cellulase hyperproducing mutant. Filter paper degrading enzyme activity and cellobiohydrolase I gene expression was the highest in HXlnR, followed by C-1 and DXlnR. These results indicate that the enhancement of cellulase productivity was succeeded by xlnR overexpression.
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Oguma Y, Matsuura T, Ishikawa K, Tatebe H, Fukuda K, Nishikawa T, Takahashi H, Okajima K. Internal Movement of the Prostate During Intensity Modulated Radiation Therapy Detected by Using Cone Beam Computed Tomography Considering the Prostate and Bladder Volumes and Rectal Diameter. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Nishimura Y, Kodaira T, Ito Y, Tsuchiya K, Murakami Y, Saitoh J, Akimoto T, Nakata K, Yoshimura M, Teshima T, Toshiyasu T, Ota Y, Ishikawa K, Shimizu H, Minemura T, Ishikura S, Shibata T, Nakamura K, Shibata T, Hiraoka M. A Phase II Study of Intensity Modulated Radiation Therapy (IMRT) with Chemotherapy for Locoregionally Advanced Nasopharyngeal Cancer (NPC) (JCOG1015): Acute Toxicity and Treatment Compliance. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1467] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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57
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Ishikawa K, Inada M, Fukuda K, Tatebe H, Nakamatsu K, Kanamori S, Nishimura Y. Pharyngeal Constrictor Muscle (PCM) Sparing and Dysphagia Toxicity in the Treatment of Intensity Modulated Radiation Therapy for Nasopharyngeal Cancer (NPC). Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Furukawa I, Ishihara T, Teranishi H, Saito S, Yatsuyanagi J, Wada E, Kumagai Y, Takahashi S, Konno T, Kashio H, Kobayashi A, Kato N, Hayashi KI, Fukushima K, Ishikawa K, Horikawa K, Oishi A, Izumiya H, Ohnishi T, Konishi Y, Kuroki T. Prevalence and Characteristics of Salmonella and Campylobacter in Retail Poultry Meat in Japan. Jpn J Infect Dis 2016; 70:239-247. [PMID: 27580577 DOI: 10.7883/yoken.jjid.2016.164] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This study was performed to determine the prevalence, antimicrobial susceptibility, and genetic relatedness of Salmonella enterica subsp. enterica and Campylobacter spp. in poultry meat, and to analyze the association of genetic types of these bacteria with their geographical distribution and antimicrobial resistance profiles. Salmonella and Campylobacter isolates have been detected, respectively, in 54 and 71 samples out of 100 samples tested. Nine Salmonella serotypes were found, including S. enterica subsp. enterica serovar Infantis (33%), Schwarzengrund (12%), Manhattan (9%), and others. Campylobacter jejuni and C. coli were detected in 64 (64%) and 14 (14%) samples, respectively. S. enterica subsp. enterica isolates were very frequently resistant to tetracycline (78.3%) and streptomycin (68.3%). Many C. jejuni and C. coli isolates were resistant to sulfamethoxazole/trimethoprim (90.5%), nalidixic acid (47.3%), ampicillin (45.9%), and ciprofloxacin (40.5%). Cluster analysis was performed for the Salmonella isolates using pulsed-field gel electrophoresis (PFGE) data. For Campylobacter isolates, the cluster analysis was based on both PFGE and comparative genomic fingerprinting. The molecular typing results were compared with the information about antimicrobial resistance and geographical locations in which the poultry meat was produced. This analysis revealed that C. jejuni strains with a particular genotype and antimicrobial resistance profile are spreading in specific areas of Japan.
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Kim HW, Park AK, Ishikawa K. Structural insight of hyperthermostable cellulase from the archaea Pyrococcus horikoshii. Acta Crystallogr A Found Adv 2016. [DOI: 10.1107/s2053273316096510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Watanabe M, Fukada H, Ishikawa K. Construction of Thermophilic Xylanase and Its Structural Analysis. Biochemistry 2016; 55:4399-409. [DOI: 10.1021/acs.biochem.6b00414] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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61
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Takeda E, Kunimoto K, Kawai Y, Kataoka M, Ishikawa K, Nakamura T. Role of F225 in O-phosphoserine sulfhydrylase from Aeropyrum pernix K1. Extremophiles 2016; 20:733-45. [DOI: 10.1007/s00792-016-0862-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 06/26/2016] [Indexed: 10/21/2022]
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62
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Matsumoto A, Tsuchiya S, Hagiwara Y, Ishikawa K, Koshima H, Asahi T, Soai K. Absolute Structure Determination of Chiral Crystals Consisting of Achiral Benzophenone with Single-crystal X-ray Diffraction and Its Correlation with Solid-state Circular Dichroism. CHEM LETT 2016. [DOI: 10.1246/cl.160114] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Ishikawa K, Shimoyama N, Mannen H, Kuwabara K, Matsuoka H, Oguchi K. Visual methods to assess cold fingers and experimental verification. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2016; 2015:6776-9. [PMID: 26737849 DOI: 10.1109/embc.2015.7319949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Cold fingers is complaint of many people. To independently assess actual finger temperature, this paper uses prototype sensors to capture blood vessel width and blood flow rates. We verify their feasibility for future home healthcare use along with far infrared camera outputs. We elucidate the impact of three remedies, massage, hot cocoa, and shoulder exercises, on 7 subjects.
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Watanabe M, Yoshida E, Fukada H, Inoue H, Tokura M, Ishikawa K. Characterization of a feruloyl esterase B from Talaromyces cellulolyticus. Biosci Biotechnol Biochem 2015; 79:1845-51. [DOI: 10.1080/09168451.2015.1058700] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Abstract
A feruloyl esterase catalyzes the hydrolysis of the 4-hydroxy-3-methoxycinnamoyl (feruloyl) group from esterified sugars in plant cell walls. Talaromyces cellulolyticus is a high cellulolytic-enzyme producing fungus. However, there is no report for feruloyl esterase activity of T. cellulolyticus. Analysis of the genome database of T. cellulolyticus identified a gene encoding a putative feruloyl esterase B. The recombinant enzyme was prepared using a T. cellulolyticus homologous expression system and characterized. The purified enzyme exhibited hydrolytic activity toward p-nitrophenyl acetate, p-nitrophenyl trans-ferulate, methyl ferulate, rice husk, and bagasse. HPLC assays showed that the enzyme released ferulic acid and p-coumaric acid from hydrothermal-treated rice husk and bagasse. Trichoderma sp. is well-known high cellulolytic-enzyme producing fungus useful for the lignocellulosic biomass saccharification. Interestingly, no feruloyl esterase has been reported from Trichoderma sp. The results show that this enzyme is expected to be industrially useful for biomass saccharification.
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Okajima K, Oguma Y, Matsuura T, Ishikawa K, Tatebe H, Fukuda K, Nishimura Y. Endoscopic Evaluation of Radiation Proctitis After Radiation Therapy for Prostate Cancer: Spatial Distribution of the Mucosal Lesion Correlated With Radiation Dose. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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66
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Oguma Y, Okajima K, Matsuura T, Ishikawa K, Tatebe H, Fukuda K, Nishimura Y. Histologic Evaluation of Acute Graft-Versus-Host Disease After Stem Cell Transplantation With or Without Total Body Irradiation. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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67
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Nakamura T, Asai S, Nakata K, Kunimoto K, Oguri M, Ishikawa K. Thermostability and reactivity in organic solvent of O-phospho-l-serine sulfhydrylase from hyperthermophilic archaeon Aeropyrum pernix K1. Biosci Biotechnol Biochem 2015; 79:1280-6. [DOI: 10.1080/09168451.2015.1020753] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Abstract
O-phospho-l-serine sulfhydrylase (OPSS) from archaeon Aeropyrum pernix K1 is able to synthesize l-cysteine even at 80 °C. In this article, we compared thermal stability and reactivity in organic solvent of OPSS with those of O-acetyl-l-serine sulfhydrylase B (OASS-B) from Escherichia coli. As a result, the thermostability of OPSS was much higher than that of OASS-B. Moreover, the activity of OPSS increased in the reaction mixture containing the organic solvent, such as N, N′-dimethyl formamide and 1,4-dioxane, whereas that of OASS-B gradually decreased as the content of organic solvent increased. From the crystal structural analysis, the intramolecular electrostatic interactions of N-terminal domain in OPSS seemed to be correlated with the tolerance of OPSS to high temperature and organic solvent. These results indicate that OPSS is more superior to OASS-B for the industrial production of l-cysteine and unnatural amino acids that are useful pharmaceuticals in the presence of organic solvent.
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Ishikawa T, Suzuki H, Ishikawa K, Yasuda S, Matsui T, Yamamoto M, Kakeda T, Yamamoto S, Owada Y, Yaksh TL. Spinal cord ischemia/injury. Curr Pharm Des 2015; 20:5738-43. [PMID: 24502574 DOI: 10.2174/1381612820666140204113252] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Accepted: 02/03/2014] [Indexed: 11/22/2022]
Abstract
A spinal cord injury leads to disturbances of sensory and motor signals due to the damage to white matter and myelinated fiber tracts. Moreover, the damage to gray matter causes segmental loss of interneurons of dorsal horn and motoneurons and restricts the therapeutic options. Neuroprotective strategies have the potential to improve the neurological outcome of patients. To achieve this, concerns to anesthetics or analgesics as neuroprotective interventions have been accumulating to explore neuroprotection during perioperative period. This review includes consideration of: 1) basic concepts of the pathophysiological mechanisms following spinal cord injury and 2) anesthetics and analgesics displaying neuroprotective potential. In particular, we review the application of isoflurane as an inhalational neuroprotectant and discuss evidence for the neuroprotection provided by barbiturates. In addition, 3) recent advances in stem cell biology, neural injury and repair, and progress toward the development of neuroprotective and regenerative interventions are the basis for increased optimism.
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Ishikawa K, Kataoka M, Yanamoto T, Nakabayashi M, Watanabe M, Ishihara S, Yamaguchi S. Crystal structure of β-galactosidase fromBacillus circulansATCC 31382 (BgaD) and the construction of the thermophilic mutants. FEBS J 2015; 282:2540-52. [DOI: 10.1111/febs.13298] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 04/13/2015] [Accepted: 04/14/2015] [Indexed: 11/26/2022]
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Hozawa J, Ishikawa K, Fukuoka F, Ohta S. Considerations on vestibular physiopathology with special reference to comparison of irritative state and paralytic state. Adv Otorhinolaryngol 2015; 42:135-8. [PMID: 3265011 DOI: 10.1159/000416092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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71
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Mizukoshi K, Ino H, Ishikawa K, Watanabe Y, Yamazaki H, Kato I, Okubo J, Watanabe I. Epidemiological survey of definite cases of Meniere's disease collected by the seventeen members of the Meniere's Disease Research Committee of Japan in 1975--1976. Adv Otorhinolaryngol 2015; 25:106-11. [PMID: 484342 DOI: 10.1159/000402925] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Between Aril 1975 and December 1976, the second nationwide survey of Meniere's disease in Japan was made by the 17 members of the Meniere's Disease Research Committee of Japan. The epidemiological data from 520 patients with definite Meniere's disease were analyzed in comparison with those from the 126 patients in the non-Meniere vertiginous group (Control A) and the 228 patients in the rhinolaryngological group (Control B). The male:female ratio of definite cases of Meniere's disease was almost the same, and the age distribution peaked at the age group of 40--49 years for males, while the peak for females was at the age group of 30--39 years. 5.8% of the 520 patients had a close relative who also suffered from Meniere's disease. From the epidemiological features, it may appear that the occurrence of vertiginous attacks in Meniere's disease is influenced much more by individual than by environmental factors. However, this feature can be considered as another evidence of the psychosomatic disorders involved in Meniere's disease.
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Ishikawa K. Diagnosis of myocardial damage upon the Frank lead electrocardiogram. Adv Cardiol 2015; 21:313-7. [PMID: 145795 DOI: 10.1159/000400472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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73
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Ishikawa K, Nagasawa T, Nakabayashi K, Fukui H, Shimada H. An influence of hemodialysis upon electrocardiographic waveforms. Adv Cardiol 2015; 21:210-3. [PMID: 619541 DOI: 10.1159/000400451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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74
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Watanabe M, Fukada H, Inoue H, Ishikawa K. Crystal structure of an acetylesterase fromTalaromyces cellulolyticusand the importance of a disulfide bond near the active site. FEBS Lett 2015; 589:1200-6. [DOI: 10.1016/j.febslet.2015.03.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 03/10/2015] [Accepted: 03/17/2015] [Indexed: 11/29/2022]
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75
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Tachibana K, Sakurai K, Yokoh H, Ishibashi T, Ishikawa K, Shirasawa T, Yokote K. Mutation in insulin receptor attenuates oxidative stress and apoptosis in pancreatic beta-cells induced by nutrition excess: reduced insulin signaling and ROS. Horm Metab Res 2015; 47:176-83. [PMID: 25295420 DOI: 10.1055/s-0034-1389990] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Type 2 diabetes results from the failure of beta-cells to adequately compensate for insulin resistance. Although the reduction of beta-cell mass is because of increased cell death and/or inadequate replication or neogenesis, the mechanism underlying beta-cell mass reduction is not fully understood. Here, we clarify the role of insulin signaling pathway in the beta-cell apoptosis using insulin resistant model mice. Wild-type mice and those carrying a mutation in the insulin receptor (mIR) were fed either regular chow or a high-fat diet for 6 weeks and subsequently investigated for beta-cell apoptosis, endoplasmic reticulum stress, and oxidative stress. Insulin tolerance tests revealed that mIR mice fed a high-fat diet (mIRHF) had higher insulin resistance. Beta-cell apoptosis was increased 2-fold in the wild-type mice fed a high-fat diet (wHF) compared with control mice, whereas beta-cell apoptosis in mIRHF mice did not increase compared with that in mIR mice. The expression of endoplasmic reticulum stress markers in isolated islets did not differ between the groups. Staining of 8-hydroxy-2'-deoxyguanosine and 4-hydroxy-2-nonenal in islets of wHF mice significantly increased, but the staining in mIRHF mice was not different from that in control group. Gene expression of the antioxidant enzyme MnSOD was significantly higher in mIRHF mice than those in the other 3 groups. A mutation in the insulin receptor attenuated the oxidative stress and apoptosis in beta-cells even though high caloric nutrient was loaded. Our results suggest that reduced insulin signaling protects beta-cells thorough decline of oxidative stress.
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