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Kido J, Bando Y, Bando M, Kajiura Y, Hiroshima Y, Inagaki Y, Murata H, Ikuta T, Kido R, Naruishi K, Funaki M, Nagata T. YKL-40 level in gingival crevicular fluid from patients with periodontitis and type 2 diabetes. Oral Dis 2015; 21:667-73. [PMID: 25740558 DOI: 10.1111/odi.12334] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2015] [Revised: 02/16/2015] [Accepted: 02/25/2015] [Indexed: 01/15/2023]
Abstract
OBJECTIVE YKL-40 is a chitin-binding glycoprotein, the level of which increases in inflammatory diseases, diabetes mellitus (DM), cardiovascular diseases, and tumors. Gingival crevicular fluid (GCF) contains many proteins and markers of periodontitis. The purpose of this study was to investigate YKL-40 level in GCF from patients with periodontitis and DM and the association between YKL-40 level and chronic periodontitis (CP) or DM. SUBJECTS AND METHODS The subjects were 121 patients with DM, CP, DM and periodontitis (DM-P), and healthy subjects (H). GCF was collected using paper strips after the sites for GCF collection were clinically evaluated for probing depth (PD), gingival index (GI), and bleeding on probing (BOP). YKL-40 in GCF was identified by Western blotting, and its level was determined by ELISA. RESULTS YKL-40 was contained in GCF samples from H, DM, CP, and DM-P sites, and its levels (amount and concentration) in CP and DM-P were significantly higher than those in H and DM. GCF YKL-40 level significantly correlated with PD and GI, and its level in BOP-positive sites was significantly higher than that in BOP-negative ones. CONCLUSIONS GCF YKL-40 level was elevated in periodontitis, but not DM. YKL-40 in GCF may be an inflammatory marker for periodontitis.
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Akahoshi T, Sugimori H, Kaku N, Tokuda K, Nagata T, Noda E, Morita M, Hashizume M, Maehara Y. Comparison of recombinant human thrombomodulin and gabexate mesylate for treatment of disseminated intravascular coagulation (DIC) with sepsis following emergent gastrointestinal surgery: a retrospective study. Eur J Trauma Emerg Surg 2014; 41:531-8. [PMID: 26038004 DOI: 10.1007/s00068-014-0478-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 11/06/2014] [Indexed: 10/24/2022]
Abstract
PURPOSE Recombinant thrombomodulin (rTM) has been available in Japan since 2008, but there is concern about its association with postoperative hemorrhage. The efficacy and safety of rTM were examined in patients with disseminated intravascular coagulation (DIC) caused by a septic condition after gastrointestinal surgery. METHODS Forty-two patients were emergently admitted to the intensive care unit after emergent gastrointestinal surgery in Kyushu University Hospital from May 2008 to April 2013. Of these patients, 22 had DIC (defined as an acute DIC score ≥ 4). All but three patients received treatment with gabexate mesylate (GM) (n = 9) or rTM (n = 10). The causes of sepsis were peritonitis with colorectal perforation, anastomotic leakage, and intestinal necrosis. Acute DIC score, sepsis-related organ failure assessment score, platelet count, and a variety of biochemical parameters were compared between rTM and GM recipients after treatment administration. RESULTS There were no significant differences between the groups for any parameter except C-reactive protein levels. The CRP level tended to be lower in the rTM group than in the GM group. Acute DIC score in the rTM group resolved significantly earlier than that in the GM group. No patient stopped the administration of rTM because of postoperative bleeding. CONCLUSION rTM may be an effective therapeutic drug for the treatment of septic patients with DIC following emergent gastrointestinal surgery.
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Tsuchiya Y, Kawai S, Tazawa K, Yamagishi H, Arai H, Manabe T, Sekine S, Okumura T, Nagata T, Tsukada K. 251. Is laparoscopy-assisted colectomy superior to open colectomy? Comparison of the long term postoperative course and prognosis. Eur J Surg Oncol 2014. [DOI: 10.1016/j.ejso.2014.08.243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Murata H, Hattori T, Maeda H, Takashiba S, Takigawa M, Kido J, Nagata T. Identification of transactivation-responsive DNA-binding protein 43 (TARDBP43; TDP-43) as a novel factor for TNF-α expression upon lipopolysaccharide stimulation in human monocytes. J Periodontal Res 2014; 50:452-60. [PMID: 25202836 DOI: 10.1111/jre.12227] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/13/2014] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND OBJECTIVE Tumor necrosis factor alpha (TNF-α) is a major cytokine implicated in various inflammatory diseases. The nature of the nuclear factors associated with human TNF-α gene regulation is not well elucidated. We previously identified a novel region located from -550 to -487 in human TNF-α promoter that did not contain the reported binding sites for nuclear factor kappa B (NF-κB) but showed lipopolysaccharide (LPS)-induced transcriptional activity. The purpose of this study is to identify novel factors that bind to the promoter region and regulate TNF-α expression. MATERIAL AND METHODS To identify DNA-binding proteins that bound to the target region of TNF-α promoter, a cDNA library from LPS-stimulated human monocytic cell line THP-1 was screened using a yeast one-hybrid system. Cellular localizations of the DNA-binding protein in the cells were examined by subcellular immunocytochemistry. Nuclear amounts of the protein in LPS-stimulated THP-1 cells were identified by western blot analysis. Expression of mRNA of the protein in the cells was quantified by real-time polymerase chain reaction. Electrophoretic mobility shift assays were performed to confirm the DNA-binding profile. Overexpression of the protein and knockdown of the gene were also performed to investigate the role for TNF-α expression. RESULTS Several candidates were identified from the cDNA library and transactivation-responsive DNA-binding protein 43 (TARDBP43; TDP-43) was focused on. Western blot analysis revealed that nuclear TDP-43 protein was increased in the LPS-stimulated THP-1 cells. Expression of TDP-43 mRNA was already enhanced before TNF-α induction by LPS. Electrophoretic mobility shift assay analysis showed that nuclear extracts obtained by overexpressing FLAG-tagged TDP-43 bound to the -550 to -487 TNF-α promoter fragments. Overexpression of TDP-43 in THP-1 cells resulted in an increase of TNF-α expression. Knockdown of TDP-43 in THP-1 cells downregulated TNF-α expression. CONCLUSION We identified TDP-43 as one of the novel TNF-α factors and found that it bound to the LPS-responsive element in the TNF-α promoter to increase TNF-α expression.
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Nakajima Y, Inagaki Y, Kido J, Nagata T. Advanced glycation end products increase expression of S100A8 and A9 via RAGE-MAPK in rat dental pulp cells. Oral Dis 2014; 21:328-34. [PMID: 25098709 DOI: 10.1111/odi.12280] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 07/19/2014] [Accepted: 07/25/2014] [Indexed: 12/15/2022]
Abstract
OBJECTIVE Advanced glycation end products (AGE) are involved in the progression of diabetic complications. Although our previous reports show that AGE increased dental pulp calcification, AGE accumulation is also associated with inflammation. This study examined AGE effect on the expression of inflammation factors using rat dental pulp tissues and cell cultures. MATERIALS AND METHODS Receptor for AGE (RAGE), S100A8, S100A9, and interleukin (IL)-1β were selected as inflammation parameters. Rat dental pulp cells were cultured and treated with AGE, and the effects were determined by real-time PCR. An anti-RAGE antibody or MAPK pathway inhibitors (PD98059, SB203580, and SP60012) were used to investigate AGE signaling pathway. RESULTS The mRNA levels of RAGE, S100A8, S100A9, and IL-1β were higher in diabetic pulp tissues. AGE increased mRNA expressions of S100A8, S100A9, and IL-1β in cultured dental pulp cells. In the presence of anti-RAGE antibody, AGE did not increase in S100A8 or S100A9 expressions. The AGE-induced increases in S100A8 and S100A9 were inhibited by PD98059 and SB203580, respectively. CONCLUSIONS Advanced glycation end products increased mRNA expression of S100A8, S100A9, and IL-1β under diabetic pulp conditions, and AGE-induced increases in S100A8 and S100A9 expressions may be associated with the RAGE-MAPK signaling pathway.
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Yanazume S, Douzono H, Kubo H, Nagata T, Douchi T, Kobayashi H. Cryotherapy for Massive Vulvar Lymphatic Leakage Complicated with Lymphangiomas Following Gynecological Cancer Treatment. Jpn J Clin Oncol 2014; 44:1116-9. [DOI: 10.1093/jjco/hyu125] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Inose T, Tanaka D, Tanaka H, Ivasenko O, Nagata T, Ohta Y, De Feyter S, Ishikawa N, Ogawa T. Cover Picture: Switching of Single-Molecule Magnetic Properties of Tb III-Porphyrin Double-Decker Complexes and Observation of Their Supramolecular Structures on a Carbon Surface (Chem. Eur. J. 36/2014). Chemistry 2014. [DOI: 10.1002/chem.201490150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Nogami N, Ichihara E, Kozuki T, Kubo T, Kishino D, Kuyama S, Bessho A, Fujii M, Takigawa N, Chikamori K, Aoe K, Nagata T, Fujimoto N, Hosokawa S, Harita S, Kamei H, Ueoka H, Hotta K, Tanimoto M, Kiura K. A Phase Ii Trial of Gefitinib in Combination with Bevacizumab As First-Line Therapy for Advanced Non-Small-Cell Lung Cancer with Activating Egfr Gene Mutations: Olcsg 1001. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu349.64] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Hasumi H, Nagata T. Modeling the global cycle of marine dissolved organic matter and its influence on marine productivity. Ecol Modell 2014. [DOI: 10.1016/j.ecolmodel.2014.05.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Nagata T, Fukuzawa T, Takeda M, Fukazawa M, Mori T, Nihei T, Honda K, Suzuki Y, Kawabe Y. Tofogliflozin, a novel sodium-glucose co-transporter 2 inhibitor, improves renal and pancreatic function in db/db mice. Br J Pharmacol 2014; 170:519-31. [PMID: 23751087 DOI: 10.1111/bph.12269] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Revised: 05/28/2013] [Accepted: 06/04/2013] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND AND PURPOSE Although inhibition of renal sodium-glucose co-transporter 2 (SGLT2) has a stable glucose-lowering effect in patients with type 2 diabetes, the effect of SGLT2 inhibition on renal dysfunction in type 2 diabetes remains to be determined. To evaluate the renoprotective effect of SGLT2 inhibition more precisely, we compared the effects of tofogliflozin (a specific SGLT2 inhibitor) with those of losartan (an angiotensin II receptor antagonist) on renal function and beta-cell function in db/db mice. EXPERIMENTAL APPROACH The effects of 8-week tofogliflozin or losartan treatment on renal and beta-cell function were investigated in db/db mice by quantitative image analysis of glomerular size, mesangial matrix expansion and islet beta-cell mass. Blood glucose, glycated Hb and insulin levels, along with urinary albumin and creatinine were measured KEY RESULTS Tofogliflozin suppressed plasma glucose and glycated Hb and preserved pancreatic beta-cell mass and plasma insulin levels. No improvement of glycaemic conditions or insulin level was observed with losartan treatment. Although the urinary albumin/creatinine ratio of untreated db/db mice gradually increased from baseline, tofogliflozin or losartan treatment prevented this increase (by 50-70%). Tofogliflozin, but not losartan, attenuated glomerular hypertrophy. Neither tofogliflozin nor losartan altered matrix expansion. CONCLUSIONS AND IMPLICATIONS Long-term inhibition of renal SGLT2 by tofogliflozin not only preserved pancreatic beta-cell function, but also prevented kidney dysfunction in a mouse model of type 2 diabetes. These findings suggest that long-term use of tofogliflozin in patients with type 2 diabetes may prevent progression of diabetic nephropathy.
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Nagata T. Molby: Graphical Molecular Modeling Software with Integrated Ruby Interpreter. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2014. [DOI: 10.1246/bcsj.20140093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Inose T, Tanaka D, Tanaka H, Ivasenko O, Nagata T, Ohta Y, Feyter SD, Ishikawa N, Ogawa T. Switching of Single-Molecule Magnetic Properties of TbIII-Porphyrin Double-Decker Complexes and Observation of Their Supramolecular Structures on a Carbon Surface. Chemistry 2014. [DOI: 10.1002/chem.201403984] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Suzuki M, Takeda M, Kito A, Fukazawa M, Yata T, Yamamoto M, Nagata T, Fukuzawa T, Yamane M, Honda K, Suzuki Y, Kawabe Y. Tofogliflozin, a sodium/glucose cotransporter 2 inhibitor, attenuates body weight gain and fat accumulation in diabetic and obese animal models. Nutr Diabetes 2014; 4:e125. [PMID: 25000147 PMCID: PMC5189930 DOI: 10.1038/nutd.2014.20] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 05/26/2014] [Accepted: 05/30/2014] [Indexed: 12/23/2022] Open
Abstract
OBJECTIVE Tofogliflozin, a highly selective inhibitor of sodium/glucose cotransporter 2 (SGLT2), induces urinary glucose excretion (UGE), improves hyperglycemia and reduces body weight in patients with Type 2 diabetes (T2D). The mechanisms of tofogliflozin on body weight reduction were investigated in detail with obese and diabetic animal models. METHODS Diet-induced obese (DIO) rats and KKAy mice (a mouse model of diabetes with obesity) were fed diets containing tofogliflozin. Body weight, body composition, biochemical parameters and metabolic parameters were evaluated. RESULTS In DIO rats tofogliflozin was administered for 9 weeks, UGE was induced and body weight gain was attenuated. Body fat mass decreased without significant change in bone mass or lean body mass. Food consumption (FC) increased without change in energy expenditure, and deduced total calorie balance (deduced total calorie balance=FC-UGE-energy expenditure) decreased. Respiratory quotient (RQ) and plasma triglyceride (TG) level decreased, and plasma total ketone body (TKB) level increased. Moreover, plasma leptin level, adipocyte cell size and proportion of CD68-positive cells in mesenteric adipose tissue decreased. In KKAy mice, tofogliflozin was administered for 3 or 5 weeks, plasma glucose level and body weight gain decreased together with a reduction in liver weight and TG content without a reduction in body water content. Combination therapy with tofogliflozin and pioglitazone suppressed pioglitazone-induced body weight gain and reduced glycated hemoglobin level more effectively than monotherapy with either pioglitazone or tofogliflozin alone. CONCLUSION Body weight reduction with tofogliflozin is mainly due to calorie loss with increased UGE. In addition, tofogliflozin also induces a metabolic shift from carbohydrate oxidation to fatty acid oxidation, which may lead to prevention of fat accumulation and inflammation in adipose tissue and liver. Tofogliflozin may have the potential to prevent obesity, hepatic steatosis and improve insulin resistance as well as hyperglycemia.
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Inose T, Tanaka D, Tanaka H, Ivasenko O, Nagata T, Ohta Y, De Feyter S, Ishikawa N, Ogawa T. Switching of Single-Molecule Magnetic Properties of TbIII-Porphyrin Double-Decker Complexes and Observation of Their Supramolecular Structures on a Carbon Surface. Chemistry 2014; 20:11362-9. [DOI: 10.1002/chem.201402669] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Indexed: 11/07/2022]
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Hasezawa S, Nagata T. Dynamic Organization of Plant Microtubules at the Three Distinct Transition Points During the Cell Cycle Progression of Synchronized Tobacco BY-2 Cells. ACTA ACUST UNITED AC 2014. [DOI: 10.1111/j.1438-8677.1991.tb00218.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kumagai F, Hasezawa S, Takahashi Y, Nagata T. The Involvement of Protein Synthesis Elongation Factor 1α in the Organization of Microtubules on the Perinuclear Region during the Cell Cycle Transition from M Phase to G1Phase in Tobacco BY-2 Cells. ACTA ACUST UNITED AC 2014. [DOI: 10.1111/j.1438-8677.1995.tb00523.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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93
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Chatani H, Tanaka M, Nagata T, Araki T, Kusunoki S. Guillain–Barré syndrome–like–onset neurosarcoidosis positive for immunoglobulin G anti-N-acetylgalactosaminyl-GD1a antibody. J Clin Neurosci 2014; 21:170-2. [DOI: 10.1016/j.jocn.2013.01.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Revised: 12/21/2012] [Accepted: 01/03/2013] [Indexed: 10/26/2022]
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Nakamura M, Kitatsuka M, Takahashi K, Nagata T, Mori S, Kuzuhara D, Okujima T, Yamada H, Nakae T, Uno H. Yellow NIR dye: π-fused bisbenzoBODIPYs with electron-withdrawing groups. Org Biomol Chem 2014; 12:1309-17. [DOI: 10.1039/c3ob41996g] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stable benzene-fused bisbenzoBODIPY with four cyano groups is ideal for a NIR-selective dye, which shows strong absorption in the NIR region and good transparency in the visible region.
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Seto S, Sugaya K, Tsujimura K, Nagata T, Horii T, Koide Y. Rab39a interacts with phosphatidylinositol 3-kinase and negatively regulates autophagy induced by lipopolysaccharide stimulation in macrophages. PLoS One 2013; 8:e83324. [PMID: 24349490 PMCID: PMC3862771 DOI: 10.1371/journal.pone.0083324] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Accepted: 11/01/2013] [Indexed: 11/25/2022] Open
Abstract
Rab39a has pleiotropic functions in phagosome maturation, inflammatory activation and neuritogenesis. Here, we characterized Rab39a function in membrane trafficking of phagocytosis and autophagy induction in macrophages. Rab39a localized to the periphery of LAMP2-positive vesicles and showed the similar kinetics on the phagosome to that of LAMP1. The depletion of Rab39a did not influence the localization of LAMP2 to the phagosome, but it augments the autophagosome formation and LC3 processing by lipopolysaccharide (LPS) stimulation. The augmentation of autophagosome formation in Rab39a-knockdown macrophages was suppressed by Atg5 depletion or an inhibitor for phosphatidylinostol 3-kinase (PI3K). Immunoprecipitation analysis revealed that Rab39a interacts with PI3K and that the amino acid residues from 34(th) to 41(st) in Rab39a were indispensable for this interaction. These results suggest that Rab39a negatively regulates the LPS-induced autophagy in macrophages.
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Motegi C, Nagata T, Miki T, Weinbauer MG, Legendre L, Rassoulzadegan F. Interactive effects of viral and bacterial production on marine bacterial diversity. PLoS One 2013; 8:e76800. [PMID: 24244268 PMCID: PMC3820650 DOI: 10.1371/journal.pone.0076800] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Accepted: 08/29/2013] [Indexed: 11/18/2022] Open
Abstract
A general model of species diversity predicts that the latter is maximized when productivity and disturbance are balanced. Based on this model, we hypothesized that the response of bacterial diversity to the ratio of viral to bacterial production (VP/BP) would be dome-shaped. In order to test this hypothesis, we obtained data on changes in bacterial communities (determined by terminal restriction fragment length polymorphism of 16S rRNA gene) along a wide VP/BP gradient (more than two orders of magnitude), using seawater incubations from NW Mediterranean surface waters, i.e., control and treatments with additions of phosphate, viruses, or both. In December, one dominant Operational Taxonomic Unit accounted for the major fraction of total amplified DNA in the phosphate addition treatment (75±20%, ± S.D.), but its contribution was low in the phosphate and virus addition treatment (23±19%), indicating that viruses prevented the prevalence of taxa that were competitively superior in phosphate-replete conditions. In contrast, in February, the single taxon predominance in the community was held in the phosphate addition treatment even with addition of viruses. We observed statistically robust dome-shaped response patterns of bacterial diversity to VP/BP, with significantly high bacterial diversity at intermediate VP/BP. This was consistent with our model-based hypothesis, indicating that bacterial production and viral-induced mortality interactively affect bacterial diversity in seawater.
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Sekine S, Shimada Y, Nagata T, Sawada S, Yoshioka I, Matsui K, Moriyama M, Omura T, Osawa S, Shibuya K, Hashimoto I, Watanabe T, Hojo S, Hori R, Okumura T, Yoshida T, Tsukada K. Role of aquaporin-5 in gallbladder carcinoma. Eur Surg Res 2013; 51:108-17. [PMID: 24217644 DOI: 10.1159/000355675] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Accepted: 09/17/2013] [Indexed: 01/04/2023]
Abstract
BACKGROUND/PURPOSE Aquaporins (AQPs) are important in controlling bile formation. However, the exact role in human gallbladder carcinogenesis has not yet been defined. METHODS AQP-5-expressing gallbladder carcinoma (GBC) cell lines (NOZ) were transfected with anti-AQP-5 small interfering RNA (siRNA). Growth, migration, invasion assay, and drug susceptibility tests were performed. Next, microRNA (miRNA) expression was analyzed by miRNA oligo chip (3D-Gene®). AQP-5 and AQP-5-related miRNA target gene expressions were also analyzed using tissue microarray (TMA) in 44 GBC samples. RESULTS Treatment with AQP-5 siRNA decreased cell proliferation, migration, and invasion. On the other hand, those cells increased IC50 of gemcitabine. By performing miRNA assays, miR-29b, -200a, and -21 were shown to be highly overexpressed in cells treated with AQP-5 siRNA NOZ. When focusing on miR-21, phosphatase and tensin homolog (PTEN) was found to be a target of miR-21. In the TMA, AQP-5/PTEN coexpression was significantly associated with the depth of invasion and MIB-1 index (p = 0.003, 0.010). Survival of patients with a high AQP-5/PTEN coexpression was longer than that of patients with a low coexpression (p = 0.003). CONCLUSIONS Our result suggested that miR-21 and PTEN may contribute to the role of AQP-5 in GBC. AQP-5 and PTEN cascades are favorable biomarkers of GBC.
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Nagata T, Okada S, Makikawa M. Electric motor assisted bicycle as an aerobic exercise machine. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2013; 2012:1933-5. [PMID: 23366293 DOI: 10.1109/embc.2012.6346332] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The goal of this study is to maintain a continuous level of exercise intensity around the aerobic threshold (AT) during riding on an electric motor assisted bicycle using a new control system of electrical motor assistance which uses the efficient pedaling rate of popular bicycles. Five male subjects participated in the experiment, and the oxygen uptake was measured during cycling exercise using this new pedaling rate control system of electrical motor assistance, which could maintain the pedaling rate within a specific range, similar to that in previous type of electrically assisted bicycles. Results showed that this new pedaling rate control system at 65 rpm ensured continuous aerobic exercise intensity around the AT in two subjects, and this intensity level was higher than that observed in previous type. However, certain subjects were unable to maintain the expected exercise intensity because of their particular cycling preferences such as the pedaling rate. It is necessary to adjust the specific pedaling rate range of the electrical motor assist control according to the preferred pedaling rate, so that this system becomes applicable to anyone who want continuous aerobic exercise.
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Silva KN, Nicolini C, Silva MS, Fernandes CD, Nagata T, Resende RO. First Report of Johnsongrass mosaic virus (JGMV) Infecting Pennisetum purpureum in Brazil. PLANT DISEASE 2013; 97:1003. [PMID: 30722548 DOI: 10.1094/pdis-01-13-0013-pdn] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Tropical grass and legume species used as pasture grasses for cattle feeding cover over 25% of the agricultural area in Brazil. In recent years, plants showing virus-like symptoms have been observed in the main pasture grass growing areas. Plants of Pennisetum purpureum line CNPGL 00211 showing typical virus mosaic symptoms on leaves and growth reduction were collected in Bahia State, Brazil. Flexuous elongated potyvirus-like particles were observed in the leaf-dip preparation of diseased plants by electron microscopy. In addition, the virus was mechanically transmitted using a standard procedure for potyviruses (4) and produced similar symptoms in inoculated P. purpureum plants. For further molecular identification, total RNA was extracted from frozen symptomatic leaves following the guanidine thiocyanate method (3). cDNA synthesis was performed using oligonucleotide, OligodT50M10 and PCR was carried out using Potyvirus degenerate primers PY11 (5'-GGNAAYAAYAGYGGNCARCC-3') (2) and M10 (5'-AAGCAGTGTTATCAACGCAGA-3'). The amplified fragments of the expected size (approximately 2 kb comprising part of the NIb protein gene, the entire coat protein [CP] gene, and the 3' nontranslated region) were separated using agarose gel electrophoresis, excised, and cloned into plasmid vector pGEMT-Easy (Promega) according to the manufacturer's instructions. Four selected clones were sequenced (Macrogen, South Korea). The sequenced 2.0-kb fragment (GenBank Accession No. KC333416) was compared with sequences available in GenBank and the highest nucleotide identity of 79% was observed with Johnsongrass mosaic virus (JGMV) isolated in Australia (4). According to the Potyvirus species demarcation convention based on CP identity (1), the virus isolate from P. purpureum belongs to the JGMV species. However, the amino acid sequence of the N-terminus of the CP of the Bahia isolate is distinct from JGMV sequences reported in GenBank. The phylogenetic analysis of the CP confirmed the difference since this Bahia isolate was located in a clearly distinct branch separate from all JGMV isolates. To our knowledge, this is the first report of a JGMV in Brazil infecting tropical grass in the main pasture areas. References: (1) M. J. Adams et al. Arch. Virol. 150: 459, 2005. (2) J. Chen et al. Arch. Virol. 146:757. 2001. (3) P. Chomczynski and N. Sacchi. Nature Protocols 1:581, 2006. (4) H. K. Laidlaw et al. Arch. Virol. 149:1633, 2004.
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Hozumi H, Tsujimura K, Yamamura Y, Seto S, Uchijima M, Nagata T, Miwa S, Hayakawa H, Fujisawa T, Hashimoto D, Inui N, Suda T, Chida K, Koide Y. Immunogenicity of dormancy-related antigens in individuals infected with Mycobacterium tuberculosis in Japan. Int J Tuberc Lung Dis 2013; 17:818-24. [DOI: 10.5588/ijtld.12.0695] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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