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Satoh M, Terata S, Kikuya M, Ohkubo T, Hashimoto T, Hara A, Hirose T, Obara T, Metoki H, Inoue R, Asayama K, Nakayama M, Kanno A, Totsune K, Hoshi H, Satoh H, Sato H, Imai Y, Palmer S, Germaine W, Iff S, Craig J, Mitchell P, Wang JJ, Strippoli G, Palmer S, Craig J, Navaneethan S, Tonelli M, Pellegrini F, Strippoli G, Stracke S, Ernst F, Robinson D, Schwahn C, John U, Felix SB, Volzke H, Mysula I, Gozhenko A, Susla O, Minutolo R, Gabbai FB, Agarwal R, Bellizzi V, Nappi F, Conte G, De Nicola L, Smith E, Tomlinson L, Ford M, Mcmahon L, Rajkumar C, Holt S, Lee S, Kim I, Lee D, Rhee H, Song S, Seong E, Kwak I, Redal-Baigorri B, Rasmusen K, Goya Heaf J, Sombolos K, Tsakiris D, John B, Vlahakos D, Siamopoulos K, Vargiemezis V, Nikolaidis P, Iatrou C, Dafnis E, Argyropoulos C, Xynos K, Ramona H, Jos D, Guido F, Patrick D, Dominique L, Begona MYK, Antoon DS, Marc VS, Hellberg M, Wiberg EM, Hoglund P, Simonsen O, Clyne N, Manfredini F, Manfredini F, Bolignano D, Rastelli S, Barilla A, Bertoli S, Ciurlino D, Messa P, Fabrizi F, Zuccala A, Rapana R, Fatuzzo P, Rapisarda F, Bonanno G, Lombardi L, De Paola L, Cupisti A, Fuiano G, Lucisano G, Tripepi G, Catizone L, Zoccali C, Mallamaci F, Ishigami T, Ishigami T, Yamamoto R, Nagasawa Y, Isaka Y, Konta T, Iseki K, Moriyama T, Yamagata K, Tsuruya K, Yoshida H, Fujimoto S, Asahi K, Watanabe T, Morales E, Gutierrez E, Forteza A, Bellot R, Sanchez V, Sanz MP, Evangelista A, Cortina J, Praga M, Hung CC, Yang ML, Hwang SJ, Chen HC, Saglimbene VM, Palmer S, Craig J, Pellegrini F, Vecchio M, Ruospo M, De Berardis G, Strippoli G, DI Iorio B, Bellasi A, Pota A, Russo L, Russo D, Nakano C, Nakano C, Hamano T, Fujii N, Obi Y, Matsui I, Mikami S, Inoue K, Shimomura A, Rakugi H, Isaka Y, Yen CY, Wang HH, Hung CC, Hwang SJ, Chen HC, Postorino M, Postorino M, Cutrupi S, Pizzini P, Marino C, D'arrigo G, Tripepi G, Zoccali C, Ghasemi H, Afshar R, Afshar R, Shabpirai H, Davati A, Zerafatjou N, Abdi S, Khorsand Askari M, Almeida E, Lavinas C, Teixeira C, Raimundo M, Nogueira C, Ferreira M, Sampaio A, Henriques I, Teixeira C, Gomes Da Costa A, Leal M, Ekart R, Hojs N, Pecovnik Balon B, Bevc S, Dvorsak B, Stropnik Galuf T, Hojs R, Lin WH, Guo CY, Wang WM, Yang DC, Kuo TH, Liu MF, Wang MC, Hara S, Tanaka K, Tsuji H, Ohmoto Y, Amaka K, Ubara Y, Arase K, Yilmaz MI, Solak Y, Saglam M, Yaman H, Unal HU, Gok M, Cetinkaya H, Biyik Z, Gaipov A, Caglar K, Tonbul HZ, Turk S, Wang HH, Yen CY, Hung CC, Hwang SJ, Chen HC, Krivoshiev S, Krivoshiev S, Koteva A, Kraev Z, Mihaylov G, Shikov P, David R, Jeffrey J, Andrew S, Michael R, Charmot D, Fouda R, Abdelhamid Y, Alsayed D, Salah S, Belal D, Salem M, Ahmed H, Vecchio M, Palmer S, Saglimbene VM, Ruospo M, Gargano L, Pellegrini F, Strippoli G, Tisljar M, Horvatic I, Bozic B, Crnjakovic Palmovic J, Bacalja J, Bulimbasic S, Galesic Ljubanovic D, Galesic K, Choi JS, Kim CS, Park JW, Bae EH, MA SK, Kim SW, Choi JS, Kim CS, Park JW, Bae EH, MA SK, Kim SW. Clinical Nephrology - Epidemiology I. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Yang Y, Ishino S, Yamagami T, Kumamaru T, Satoh H, Ishino Y. The OsGEN-L protein from Oryza sativa possesses Holliday junction resolvase activity as well as 5'-flap endonuclease activity. J Biochem 2012; 151:317-27. [DOI: 10.1093/jb/mvr145] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Satoh H, Tsushima I, Miura Y, Ito T, Okabe S. Characterization of microbial community structures and their activities in single anaerobic granules by beta imaging, microsensors and fluorescence in situ hybridization. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2012; 65:2125-2131. [PMID: 22643406 DOI: 10.2166/wst.2012.117] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The spatial distribution of microorganisms and their in situ activities in anaerobic granules were investigated by fluorescence in situ hybridization (FISH), beta imaging and microsensors. FISH results revealed a layered structure of microorganisms in the granule, where Chloroflexi was present in the outermost layer, Smithella spp. and Syntrophobacter spp. were found in a depth of ca. 100 μm, and Archaea was restricted to the inner layer (below ca. 300 μm from the surface). Substrate uptake patterns elucidated by beta imaging demonstrated that glucose uptake was highest at 50 μm depth, whereas propionate uptake had a peak at 200 μm depth. In addition, microsensor measurements revealed that acid was produced mainly at 100 μm depth and H(2) production was detected at a depth from 100 to 200 μm. H(2) consumption and corresponding CH(4) production were found below 200 μm from the surface. Direct comparison of these results implied sequential degradation of complex organic compounds in anaerobic granules; Chloroflexi contributed to fermentation of organic compounds and acid production in the outermost layer, volatile fatty acids were oxidized and H(2) was produced mainly by Smithella spp. and Syntrophobacter spp. at a depth from 100 to 200 μm, and Archaea produced CH(4) below ca. 300 μm from the surface.
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Uno S, Uchida T, Sekimoto M, Murakami T, Miyama K, Shoji M, Nakano E, T.Koike, Morita K, Satoh H, T.Kamiyama, Kiyanagi Y. Two-dimensional Neutron Detector with GEM and its Applications. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.phpro.2012.03.019] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Awa K, Satoh H, Hori S, Sawada Y. Prediction of time-dependent interaction of aspirin with ibuprofen using a pharmacokinetic/pharmacodynamic model. J Clin Pharm Ther 2011; 37:469-74. [PMID: 22122406 DOI: 10.1111/j.1365-2710.2011.01313.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
WHAT IS KNOWN AND OBJECTIVE Low-dose aspirin is widely used for prevention of thrombosis, but combined use of aspirin with non-steroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen, reduces the antiplatelet effect of aspirin. However, there has been no report describing the effects of the timing of the ibuprofen dose on the degree of interaction between low-dose aspirin and ibuprofen. The purpose of this study was to predict the time-course of the antiplatelet effect of low-dose aspirin when ibuprofen is administered as a single dose or repeatedly in combination with aspirin at various time intervals. METHODS We simulated ex vivo platelet aggregation using a previously developed pharmacokinetic (PK)/pharmacodynamic (PD) model. RESULTS AND DISCUSSION The antiplatelet effect of low-dose aspirin (81 mg) was predicted to be markedly reduced when ibuprofen (200 mg; the usual prescribed dose in Japan) was administered 1 h or less after aspirin, but not when it was administered more than 2 h after the administration of aspirin. Moreover, the administration of ibuprofen up to 12 h before aspirin completely abrogated the antiplatelet effect of aspirin. When ibuprofen (200 mg) was administered three times daily for 3 days (day 1 to day 3) on a background of continuous low-dose aspirin (81 mg) once daily, 2 h after aspirin, no reduction in the antiplatelet effect of aspirin was predicted on day 1, but a reduction is predicted from day 2, with no return to the initial level until more than 3 days after discontinuation of ibuprofen. A marked reduction in the antiplatelet effect of aspirin was also seen on the same schedule when the dosage of ibuprofen was 150 mg, which is the dose used in over-the-counter (OTC) preparations. WHAT IS NEW AND CONCLUSION This study indicates that the antiplatelet effect of low-dose aspirin can be markedly reduced with combined use of ibuprofen, depending on the timing of co-administration. As even the lower OTC dose of ibuprofen (150 mg) was enough to affect the antiplatelet effect of aspirin, health professionals should take into account patients' use of OTC ibuprofen when prescribing low-dose aspirin.
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Kobayashi D, Kogawa K, Imai K, Tanaka T, Hiroi S, Satoh H, Tanaka-Taya K, Nonoyama S. Quantitation of human herpesvirus-6 (HHV-6) DNA in a cord blood transplant recipient with chromosomal integration of HHV-6. Transpl Infect Dis 2011; 13:650-3. [DOI: 10.1111/j.1399-3062.2011.00693.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2011] [Revised: 08/01/2011] [Accepted: 09/07/2011] [Indexed: 11/30/2022]
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Van Driessche AES, García-Ruíz JM, Tsukamoto K, Patiño LD, Satoh H. How slow do giant gypsum crystals grow? Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311086405] [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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Tsukamoto K, Satoh H, Oshima Y, Ueda A, Miura H, Araki Y, Kimura Y. Crystal growth in carbon sequestration. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311086417] [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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Sakamoto M, Murata K, Nakai K, Satoh H. Differences in heavy metal exposure to fetuses and breast-feeding infants. Toxicol Lett 2011. [DOI: 10.1016/j.toxlet.2011.05.183] [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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Katanoda K, Saika K, Yamamoto S, Tanaka S, Oshima A, Nakamura M, Satoh H, Tajima K, Suzuki T, Tamakoshi A, Tsugane S, Sobue T. Projected Cancer Mortality Among Japanese Males Under Different Smoking Prevalence Scenarios: Evidence for Tobacco Control Goal Setting. Jpn J Clin Oncol 2011; 41:483-9. [DOI: 10.1093/jjco/hyq247] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Ogiwara H, Ui A, Otsuka A, Satoh H, Yokomi I, Nakajima S, Yasui A, Yokota J, Kohno T. Histone acetylation by CBP and p300 at double-strand break sites facilitates SWI/SNF chromatin remodeling and the recruitment of non-homologous end joining factors. Oncogene 2011. [PMID: 21217779 DOI: 10.1038/onc.2010.592;] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Non-homologous end joining (NHEJ) is a major repair pathway for DNA double-strand breaks (DSBs) generated by ionizing radiation (IR) and anti-cancer drugs. Therefore, inhibiting the activity of proteins involved in this pathway is a promising way of sensitizing cancer cells to both radiotherapy and chemotherapy. In this study, we developed an assay for evaluating NHEJ activity against DSBs in chromosomal DNA in human cells to identify the chromatin modification/remodeling proteins involved in NHEJ. We showed that ablating the activity of the homologous histone acetyltransferases, CBP and p300, using inhibitors or small interfering RNAs-suppressed NHEJ. Ablation of CBP or p300 impaired IR-induced DSB repair and sensitized lung cancer cells to IR and the anti-cancer drug, etoposide, which induces DSBs that are repaired by NHEJ. The CBP/p300 proteins were recruited to sites of DSBs and their ablation suppressed acetylation of lysine 18 within histone H3, and lysines 5, 8, 12, and 16 within histone H4, at the DSB sites. This then suppressed the recruitment of KU70 and KU80, both key proteins for NHEJ, to the DSB sites. Ablation of CBP/p300 also impaired the recruitment of BRM, a catalytic subunit of the SWI/SNF complex involved in chromatin remodeling at DSB sites. These results indicate that CBP and p300 function as histone H3 and H4 acetyltransferases at DSB sites in NHEJ and facilitate chromatin relaxation. Therefore, inhibition CBP and p300 activity may sensitize cancer cells to radiotherapy and chemotherapy.
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Ogiwara H, Ui A, Otsuka A, Satoh H, Yokomi I, Nakajima S, Yasui A, Yokota J, Kohno T. Histone acetylation by CBP and p300 at double-strand break sites facilitates SWI/SNF chromatin remodeling and the recruitment of non-homologous end joining factors. Oncogene 2011; 30:2135-46. [PMID: 21217779 DOI: 10.1038/onc.2010.592] [Citation(s) in RCA: 227] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Non-homologous end joining (NHEJ) is a major repair pathway for DNA double-strand breaks (DSBs) generated by ionizing radiation (IR) and anti-cancer drugs. Therefore, inhibiting the activity of proteins involved in this pathway is a promising way of sensitizing cancer cells to both radiotherapy and chemotherapy. In this study, we developed an assay for evaluating NHEJ activity against DSBs in chromosomal DNA in human cells to identify the chromatin modification/remodeling proteins involved in NHEJ. We showed that ablating the activity of the homologous histone acetyltransferases, CBP and p300, using inhibitors or small interfering RNAs-suppressed NHEJ. Ablation of CBP or p300 impaired IR-induced DSB repair and sensitized lung cancer cells to IR and the anti-cancer drug, etoposide, which induces DSBs that are repaired by NHEJ. The CBP/p300 proteins were recruited to sites of DSBs and their ablation suppressed acetylation of lysine 18 within histone H3, and lysines 5, 8, 12, and 16 within histone H4, at the DSB sites. This then suppressed the recruitment of KU70 and KU80, both key proteins for NHEJ, to the DSB sites. Ablation of CBP/p300 also impaired the recruitment of BRM, a catalytic subunit of the SWI/SNF complex involved in chromatin remodeling at DSB sites. These results indicate that CBP and p300 function as histone H3 and H4 acetyltransferases at DSB sites in NHEJ and facilitate chromatin relaxation. Therefore, inhibition CBP and p300 activity may sensitize cancer cells to radiotherapy and chemotherapy.
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Oshiki M, Satoh H, Mino T. Rapid quantification of polyhydroxyalkanoates (PHA) concentration in activated sludge with the fluorescent dye Nile blue A. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2011; 64:747-753. [PMID: 22097056 DOI: 10.2166/wst.2011.707] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The present study was conducted (1) to develop a rapid quantification method of polyhydroxyalkanoates (PHA) concentration in activated sludge by Nile blue A staining and fluorescence measurement and (2) to perform on-line monitoring of PHA concentrations in activated sludge. Activated sludge samples collected from laboratory scale sequencing batch reactors and full-scale wastewater treatment plants were stained with Nile blue A and their fluorescence intensities were determined. There was a high correlation (R2 > 0.97) between the fluorescence intensities of Nile blue A and PHA concentrations in activated sludge determined by gas chromatography. The Nile blue A staining and fluorescence measurement method allows us to determine PHA concentrations in activated sludge within only five minutes and up to 96 samples can be measured at once by using microplate reader. On-line monitoring of PHA concentrations in activated sludge was achieved by using a fluorometer equipped with a flow cell and the time point at which PHA concentration in activated sludge reached the maximum level could be identified. In addition, we examined the influence of pH, floc size and co-existing chemicals in activated sludge suspension on the fluorescence intensities of Nile blue A.
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Hashimoto T, Hara A, Ohkubo T, Kikuya M, Shintani Y, Metoki H, Inoue R, Asayama K, Kanno A, Nakashita M, Terata S, Obara T, Hirose T, Hoshi H, Totsune K, Satoh H, Imai Y. Serum magnesium, ambulatory blood pressure, and carotid artery alteration: the Ohasama study. Am J Hypertens 2010; 23:1292-8. [PMID: 20706194 DOI: 10.1038/ajh.2010.168] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND To investigate the associations of 24-h ambulatory blood pressure (ABP) and serum magnesium level (sMg) with risk of carotid artery alteration in a general population. METHODS sMg and ABP, monitored every 30 min, were measured in 728 subjects (mean age, 67 years) from the Japanese general population. The extent of carotid artery alteration was evaluated according to mean common carotid intima-media thickness (IMT) and the presence of focal carotid plaque. To determine the association of sMg and carotid artery alteration, analysis of covariance (ANCOVA) (for adjusted mean IMT) or multiple logistic regression analysis (for odds ratio (OR) for the presence of carotid plaques) was used. RESULTS Lower sMg was significantly associated with mean IMT (P = 0.004) and risk of ≥2 carotid plaques (P = 0.03) after adjusting for possible confounding factors, including 24-h ABP (systolic), creatinine clearance (Ccr) (estimated using the Cockcroft-Gault equation), and serum minerals (sodium, potassium, calcium, and inorganic phosphorus). Even when 24-h ABP values were within normal range (<130/80 mm Hg), lower sMg levels (<2.2 mg/dl) were significantly associated with mean IMT (P = 0.007) and risk of ≥2 carotid plaques (OR, 2.14; 95% confidence interval, 1.18-3.85; P = 0.01). CONCLUSIONS Both 24-h ABP and lower sMg were closely and independently associated with risk of carotid artery alteration. Further investigations are needed to examine the relationship between sMg levels and the incidence of cardiovascular disease.
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Nabika S, Kiya K, Satoh H, Mizoue T, Kondo H, Katagiri M, Nishisaka T, Sugiyama K, Kurisu K. Prognostic significance of expression patterns of EGFR family, p21 and p27 in high-grade astrocytoma. HIROSHIMA JOURNAL OF MEDICAL SCIENCES 2010; 59:65-70. [PMID: 21361082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The goal of this study was to investigate the relationship among immunohistochemical expression of epithelial growth factor receptor (EGFR) family proteins, p21, p27 and prognosis in patients with high-grade astrocytoma. Expression of EGFR family proteins (c-erbB-1, c-erbB-2, c-erbB-3, c-erbB-4), p21 and p27 and Ki-67 labeling index (LI) were studied in 59 samples of high-grade astrocytoma. Expression of protein levels was analyzed by immunohistochemical staining of formalin-fixed and paraffin-embedded sections. Results were analyzed in relation to age, gender and survival. Overexpression of c-erbB-1, c-erbB-2, c-erbB-3 and c-erbB-4 was found in 40 (67.8%), 17 (28.8%), 3 (5.1%) and 42 (75.0%) samples, respectively. Similarly, low expression of p21 and p27 was observed in 50 (84.8%) and 27 (45.8%) samples. Mean Ki-67 LI was 17.3 +/- 1.1. Cox multiple regression analysis showed that c-erbB-1 (Hazard rate(HR) 1.57, 95% Confidence interval (CI) 1.08-2.36; p = 0.017), c-erbB-4 (HR 1.79, 95% CI 1.20-2.74; p = 0.004) and p27 (HR 0.50, 95% CI 0.30-0.82; p = 0.006) were significantly associated with survival. High expression of c-erbB-1 and c-erbB-4 and low expression of p27 were associated with poor prognosis in these patients.
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Kawaguchi M, Fujita J, Kokubu F, Ohara G, Huang SK, Matsukura S, Ishii Y, Adachi M, Satoh H, Hizawa N. Induction of insulin-like growth factor-I by interleukin-17F in bronchial epithelial cells. Clin Exp Allergy 2010; 40:1036-43. [PMID: 20642578 DOI: 10.1111/j.1365-2222.2010.03527.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
BACKGROUND Increased expression of IL-17F has been noted in the airway of asthmatic patients, but its role in asthma has not been fully elucidated. Insulin-like growth FACTOR-I (IGF-I) is known to be involved in airway remodelling and inflammation, while its regulatory mechanisms remain to be defined. OBJECTIVE To further clarify the biological function of IL-17F, we investigated whether IL-17F is able to regulate the expression of IGF-I in bronchial epithelial cells. METHODS Bronchial epithelial cells were stimulated with IL-17F in the presence or absence of T-helper type 2 cytokines. Various kinase inhibitors were added to the culture to identify the key signalling events leading to the expression of IGF-I, in conjunction with the use of short interfering RNAs (siRNAs) targeting mitogen- and stress-activated protein kinase (MSK) 1, p90 ribosomal S6 kinase (p90RSK), and cyclic AMP response element-binding protein (CREB). RESULTS IL-17F significantly induced IGF-I gene and protein expression, and co-stimulation with IL-4 and IL-13 augmented its production. MAP kinase kinase (MEK) inhibitors and the Raf1 kinase inhibitor significantly inhibited IGF-I production, and the combination of PD98059 and Raf1 kinase inhibitor showed further inhibition. Overexpression of Raf1 and Ras dominant-negative mutants inhibited its expression. MSK1 inhibitors significantly blocked IL17F-induced IGF-I expression. Moreover, transfection of the siRNAs targeting MSK1, p90RSK, and CREB blocked its expression. CONCLUSIONS In bronchial epithelial cells, IL-17F is able to induce the expression of IGF-I via the Raf1-MEK1/2-ERK1/2-MSK1/p90RSK-CREB pathway in vitro.
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Hattori Y, Jojima T, Tomizawa A, Satoh H, Hattori S, Kasai K, Hayashi T. A glucagon-like peptide-1 (GLP-1) analogue, liraglutide, upregulates nitric oxide production and exerts anti-inflammatory action in endothelial cells. Diabetologia 2010; 53:2256-63. [PMID: 20593161 DOI: 10.1007/s00125-010-1831-8] [Citation(s) in RCA: 144] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2010] [Accepted: 05/24/2010] [Indexed: 01/12/2023]
Abstract
AIMS/HYPOTHESIS Glucagon-like peptide-1 (GLP-1), a member of the proglucagon-derived peptide family, was seen to exert favourable actions on cardiovascular function in preclinical and clinical studies. The mechanisms through which GLP-1 modulates cardiovascular function are complex and incompletely understood. We thus investigated whether the GLP-1 analogue, liraglutide, which is an acylated GLP-1, has protective effects on vascular endothelial cells. METHODS Nitrite and nitrate were measured in medium with an automated nitric oxide detector. Endothelial nitric oxide synthase (eNOS) activation was assessed by evaluating the phosphorylation status of the enzyme and evaluating eNOS activity by citrulline synthesis. Nuclear factor kappaB (NF-kappaB) activation was assessed by reporter gene assay. RESULTS Liraglutide dose-dependently increased nitric oxide production in HUVECs. It also caused eNOS phosphorylation, potentiated eNOS activity and restored the cytokine-induced downregulation of eNOS (also known as NOS3) mRNA levels, which is dependent on NF-kappaB activation. We therefore examined the effect of liraglutide on TNFalpha-induced NF-kappaB activation and NF-kappaB-dependent expression of proinflammatory genes. Liraglutide dose-dependently inhibited NF-kappaB activation and TNFalpha-induced IkappaB degradation. It also reduced TNFalpha-induced MCP-1 (also known as CCL2), VCAM1, ICAM1 and E-selectin mRNA expression. Liraglutide-induced enhancement of nitric oxide production and suppression of NF-kappaB activation were attenuated by the AMP-activated protein kinase (AMPK) inhibitor compound C or AMPK (also known as PRKAA1) small interfering RNA. Indeed, liraglutide induced phosphorylation of AMPK, which occurs through a signalling pathway independent of cyclic AMP. CONCLUSIONS/INTERPRETATION Liraglutide exerts an anti-inflammatory effect on vascular endothelial cells by increasing nitric oxide production and suppressing NF-kappaB activation, partly at least through AMPK activation. These effects may explain some of the observed vasoprotective properties of liraglutide, as well as its beneficial effects on the cardiovascular system.
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Sakamoto M, Murata K, Kawakami S, Domingo J, Nakai K, Satoh H. Relationship between methylmercury and DHA in pregnant women and fetuses: The risks and benefits of fish consumption. Toxicol Lett 2010. [DOI: 10.1016/j.toxlet.2010.03.165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Tsubota-Utsugi M, Ohkubo T, Kikuya M, Metoki H, Kurimoto A, Suzuki K, Fukushima N, Hara A, Asayama K, Satoh H, Tsubono Y, Imai Y. High fruit intake is associated with a lower risk of future hypertension determined by home blood pressure measurement: the OHASAMA study. J Hum Hypertens 2010; 25:164-71. [PMID: 20445569 DOI: 10.1038/jhh.2010.48] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We investigate associations of fruit and vegetable intake with the risk of future hypertension using home blood pressure in a general population from Ohasama, Japan. We obtained data from 745 residents aged ≥35 years without home hypertension at baseline. Dietary intake was measured using a validated 141-item food frequency questionnaire, and subjects were then divided into quartiles according to the fruit and vegetable intake. Home hypertension was defined as home systolic/diastolic blood pressure of ≥135/85 mm Hg and/or the use of antihypertensive medication. During a 4-year follow-up period, we identified 222 incident cases of home hypertension. After adjustment for all putative confounding factors, the highest quartile of fruit intake was associated with a significantly lower risk of future home hypertension (odds ratio 0.40, 95% confidence interval 0.22-0.74, P=0.004). In conclusion, this study, based on home blood pressure measurement, suggests that higher intake of fruit is associated with a lower risk of future home hypertension.
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Tezuka K, Miyadate H, Katou K, Kodama I, Matsumoto S, Kawamoto T, Masaki S, Satoh H, Yamaguchi M, Sakurai K, Takahashi H, Satoh-Nagasawa N, Watanabe A, Fujimura T, Akagi H. A single recessive gene controls cadmium translocation in the cadmium hyperaccumulating rice cultivar Cho-Ko-Koku. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2010; 120:1175-82. [PMID: 20039013 DOI: 10.1007/s00122-009-1244-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2009] [Accepted: 12/08/2009] [Indexed: 05/21/2023]
Abstract
The heavy metal cadmium (Cd) is highly toxic to humans and can enter food chains from contaminated crop fields. Understanding the molecular mechanisms of Cd accumulation in crop species will aid production of safe Cd-free food. Here, we identified a single recessive gene that allowed higher Cd translocation in rice, and also determined the chromosomal location of the gene. The Cd hyperaccumulator rice variety Cho-Ko-Koku showed 3.5-fold greater Cd translocation than the no-accumulating variety Akita 63 under hydroponics. Analysis of an F(2) population derived from these cultivars gave a 1:3 segregation ratio for high:low Cd translocation. This indicates that a single recessive gene controls the high Cd translocation phenotype. A QTL analysis identified a single QTL, qCdT7, located on chromosome 7. On a Cd-contaminated field, Cd accumulation in the F(2) population showed continuous variation with considerable transgression. Three QTLs for Cd accumulation were identified and the peak of the most effective QTL mapped to the same region as qCdT7. Our data indicate that Cd translocation mediated by the gene on qCdT7 plays an important role in Cd accumulation on contaminated soil.
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Oshiki M, Satoh H, Mino T. Acetate uptake by PHA-accumulating and non-PHA-accumulating organisms in activated sludge from an aerobic sequencing batch reactor fed with acetate. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2010; 62:8-14. [PMID: 20595747 DOI: 10.2166/wst.2010.238] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The present study was conducted to evaluate the specific acetate uptake rates of microorganisms with and without polyhydroxyalkanoates (PHA) accumulation. Activated sludge was aerobically incubated with 75 mgC L(-1) radiolabeled or non-labeled acetate, and acetate consumption and PHA accumulation were monitored. Microorganisms were quantified as follows: all microbial cells by DAPI staining, whole acetate utilizing organisms by microautoradiography, and PHA-accumulating organisms by staining with Nile blue A. The abundance of acetate-utilizing organisms without PHA accumulation was also calculated from the outcomes. The estimate of acetate utilized by PHAAOs included both the acetate converted to PHA and that used to supply reducing power and ATP. Acetate utilized by PHAAOs and non-PHAAOs were divided by their respective abundances to obtain their respective specific acetate uptake rates: PHAAOs ranged between 5.3 and 8.0 x 10(-10) mgC cell(-1) h(-1), and non-PHAAOs ranged between 2.8 and 4.2 x 10(-10) mgC cell(-1) h(-1).
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72
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Mori T, Tanaka-Taya K, Satoh H, Aisa Y, Yamazaki R, Kato J, Ikeda Y, Okamoto S. Transmission of chromosomally integrated human herpesvirsus 6 (HHV-6) variant A from a parent to children leading to misdiagnosis of active HHV-6 infection. Transpl Infect Dis 2009; 11:503-6. [DOI: 10.1111/j.1399-3062.2009.00430.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Satoh H, Shiotani S, Otsuka N, Hatao K, Nishimura S. Role of dietary fibres, intestinal hypermotility and leukotrienes in the pathogenesis of NSAID-induced small intestinal ulcers in cats. Gut 2009; 58:1590-6. [PMID: 19060018 DOI: 10.1136/gut.2008.156596] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Recent advances in endoscopy have revealed that non-steroidal anti-inflammatory drugs (NSAIDs) often cause ulcers in the human small intestine. However, the mechanism of intestinal ulcer formation is still unclear. AIMS The role of dietary fibre (DF), intestinal motility and leukotrienes (LTs) in the formation of small intestinal ulcers induced by indomethacin (IND) was investigated in cats. METHODS Several types of diets containing DF at various percentages were given to animals twice daily during the experiment. IND was administered orally once daily after the morning meal for 3 days, and the area of mucosal lesions in the intestine was measured. Gastrointestinal motility was measured using a telemetry system in conscious cats implanted with force transducers. RESULTS In cats fed regular dry food containing 2.8% DF, IND (3 mg/kg, p.o.) significantly increased the motility of the lower half of the small intestine and produced many severe lesions; the total lesion area was 7.7 (SEM 2.0) cm(2) (n = 5). The lesions were markedly decreased with the low-DF diet (0.4%) and increased with the high-DF diet (7.2%). The lesion area was 0.1 (SEM 0.1) cm(2) (p<0.05) and 18.2 (SEM 4.1) cm(2) (p<0.05), respectively. Supplementation with insoluble DF (6% cellulose), but not soluble DF (pectin), in the low-DF diet increased the lesion area significantly. The hypermotility and lesion formation in the small intestine induced by IND were significantly (p<0.05) inhibited by AA-861 (a 5-lipoxygenase inhibitor), pranlukast (a LT receptor antagonist) or atropine. CONCLUSIONS Insoluble DF, intestinal hypermotility, leukotrienes and cholinergic pathways are implicated in the pathogenesis of small intestinal ulcers induced by NSAIDs.
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Sugiyama K, Isogai K, Toyama A, Satoh H, Saito K, Nakagawa Y, Tasaki M, Takahashi K, Saito N, Hirano T. Cyclosporine pharmacological efficacy estimated by lymphocyte immunosuppressant sensitivity test before and after renal transplantation. J Clin Pharm Ther 2009; 34:539-45. [DOI: 10.1111/j.1365-2710.2009.01036.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Mawatari T, Izumiyama O, Satoh H, Baba T, Kuroda Y, Yanase Y, Kuwaki K, Morishita K. [Infective endocarditis with acute embolism to the lower extremity artery caused by a vegetation: report of a case]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2009; 62:496-499. [PMID: 19522213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Successful surgical treatment of a case of infective endocarditis with embolism to a lower extremity artery is reported. A 71-year-old man was referred to our hospital for the treatment of infective endocarditis. Echocardiography showed a vegetation on the non-coronary cusp of the aortic valve measuring 19 mm in diameter. We planned surgical treatment, including aortic valve replacement, however, embolism of a lower extremity artery by the vegetation occurred during the waiting period for the operation. We removed the offending vegetation from the popliteal artery and replaced the peccant aortic valve with a prosthetic valve in separate operations. The postoperative course was uneventful and the patient was transferred to another hospital on the 33rd day after the valve replacement surgery.
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