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| 1 | Role of bacterial and genetic factors in gastric cancer in Costa Rica显示文摘AIM: To evaluate several risk factors for gastric cancer (GC) in Costa Rican regions with contrasting GC incidence rate (GCIR). METHODS: According to GCIR, 191 Helicobacter pylori (H pylori)-positive patients were classified into groups A (high GCIR, n = 101) and B (low GCIR, n = 90). Human DNA obtained from biopsy specimens was used in the determination of polymorphisms of the genes coding for interleukin (IL)-1β and IL-10 by PCR-RFLP, and IL-1RN by PCR. H pylori DNA extractions obtained from clinical isolates of 83 patients were used for PCR-based genotyping of H pylori cagA, vacA and babA2. Human DNA from gastric biopsies of 52 GC patients was utilized for comparative purposes. RESULTS: Cytokine polymorphisms showed no association with GCIR variability. However, gastric atrophy, intestinal metaplasia and strains with different vacA genotypes in the same stomach (mixed strain infection) were more frequently found in group A than in group B, and cagA and vacA s1b were signif icantly associated with high GCIR (P = 0.026 and 0.041, respectively). IL- 1β+3954_T/C (OR 2.1, 1.0-4.3), IL-1RN*2/L (OR 3.5, 1.7-7.3) and IL-10-592_C/A (OR 3.2, 1.5-6.8) were individually associated with GC, and a combination of these cytokine polymorphisms with H pylori vacA s1b and m1 further increased the risk (OR 7.2, 1.4-36.4). CONCLUSION: Although a proinflammatory cytokine genetic profile showed an increased risk for developing GC, the characteristics of H pylori infection, in particular the status of cagA and vacA genotype distribution seemed to play a major role in GCIR variability in Costa Rica. | Sergio A Con Hiroaki Takeuchi Gil R Con-Chin Vicky G Con-Chin Nobufumi Yasuda Reinaldo Con-Wong | 2009 | World Journal of Gastroenterology2009，15，2： | 9 |
| 2 | Clinical relevance of Helicobacter pylori babA2 and babA2/B in Costa Rica and Japan显示文摘AIM:To evaluate the prevalence of Helicobacter pylori(H.pylori ) babA2 ,babB and a recombinant gene between babA2 and babB(babA2/B ),and their role in the development of atrophic gastritis in Costa Rican and Japanese clinical isolates.METHODS:A total of 95 continuous H.pylori-positive Costa Rican(41 males and 54 females;mean age,50.65 years;SD,± 13.04 years) and 95 continuous H.pylori-positive Japanese(50 males and 45 females;mean age,63.43;SD,± 13.21 years) patients underwent upper endoscopy from October 2005 to July 2006.They were enrolled for the polymerase chain reaction(PCR)-based genotyping of the H.pylori babA2 ,babB and babA2/B genes.Statistical analysis was performed using the χ2 test and the Fisher's exact probability test and multivariate analysis was performed by logistic regression adjusting for gender and age.P < 0.05 was regarded as statistically significant.RESULTS:The PCR-based genotyping of 95 Costa Rican and 95 Japanese isolates showed a higher prevalence of babA2 in Japan(96.8%) than in Costa Rica(73.7%),while that of babA2/B was higher in Costa Rica(11.6%) than in Japan(1.1%).In Costa Rican isolates only,babA2 was significantly associated with atrophic gastritis(P = 0.01).CONCLUSION:These results suggest that the status of babA2 and babA2/B shows geographic differences,and that babA2 has clinical relevance in Costa Rica. | Sergio A Con Hiroaki Takeuchi Mitsuaki Nishioka Norihito Morimoto Tetsuro Sugiura Nobufumi Yasuda Reinaldo Con-Wong | 2010 | World Journal of Gastroenterology2010，16，4： | 4 |
| 3 | Effect of Helicobacter pylori cdrA on interleukin-8 secretions and nuclear factor kappa B activation显示文摘AIM:To investigate genetic diversity of Helicobacter pylori (H.pylori) cell division-related gene A (cdrA) and its effect on the host response.METHODS:Inactivation of H.pylori cdrA,which is involved in cell division and morphological elongation,has a role in chronic persistent infections.Genetic property of H.pylori cdrA was evaluated using polymerase chain reaction and sequencing in 128 (77 American and 51 Japanese) clinical isolates obtained from 48 and 51 patients,respectively.Enzyme-linked immunosorbent assay was performed to measure interleukin-8 (IL-8) secretion with gastric biopsy specimens obtained from American patients colonized with cdrA-positive or-negative strains and AGS cells cocultured with wild-type HPK5 (cdrA-positive) or its derivative HPKT510 (cdrA-disruptant).Furthermore,the cytotoxin-associated gene A (cagA) status (translocation and phosphorylation) and kinetics of transcription factors [nuclear factor-kappa B (NF-κB) and inhibition kappa B] were investigated in AGS cells co-cultured with HPK5,HPKT510 and its derivative HPK5CA (cagA disruptant) by western blotting analysis with immunoprecipitation.RESULTS:Genetic diversity of the H.pylori cdrA gene demonstrated that the cdrA status segregated into two categories including four allele types,cdrA-positive (allele types;Ⅰand Ⅱ) and cdrA-negative (allele types;Ⅲ and Ⅳ) categories,respectively.Almost all Japanese isolates were cdrA-positive (Ⅰ:7.8% and Ⅱ:90.2%),whereas 16.9% of American isolates were cdrA-positive (Ⅱ) and 83.1% were cdrA-negative (Ⅲ:37.7% and Ⅳ:45.5%),indicating extended diversity of cdrA in individual American isolates.Comparison of each isolate from different regions (antrum and corpus) in the stomach of 29 Americans revealed that cdrA status was identical in both isolates from different regions in 17 cases.However,12 cases had a different cdrA allele and 6 of them exhibited a different cdrA category between two regions in the stomach.Furthermore,in 5 of the 6 cases possessing a different cdrA category,cdrA-negative isolate existed in the corpus,suggesting that cdrA-negative strain is more adaptable to colonization in the corpus.IL-8 secretions from AGS revealed that IL-8 levels induced by a cdrA-disrupted HPKT510 was significantly lower (P < 0.01) compared to wildtype HPK5:corresponding to 50%-60% of those of wild-type HPK5.These data coincided with in vivo data that an average value of IL-8 in biopsy specimens from cdrA-positive and cdrA-negative groups was 215.6 and 135.9 pg/mL,respectively.Western blotting analysis documented that HPKT510 had no effect on CagA translocation and phosphorylation,however,nuclear accumulation of NF-κB was lower by HPKT510 compared to HPK5.CONCLUSION:Colonization by a cdrA-negative or cdrA-dysfunctional strain resulted in decreased IL-8 production and repression of NF-κB,and hence,attenuate the host immunity leading to persistent infection. | Hiroaki Takeuchi Ya-Nan Zhang Dawn A Israel Richard M Peek Jr Mikio Kamioka Hideo Yanai Norihito Morimoto Tetsuro Sugiura | 2012 | World Journal of Gastroenterology2012，18，5： | 3 |
| 4 | Reciprocal connections between the amygdala and parabrachial nuclei:ultrastructural demonstration by degeneration and axonal transport of horseradish peroxidase in the cat 显示文摘 | Takeuchi Y McLean J H Hopkins D A | 1982 | Brain Res1982，239，： | 2 |
| 5 | 胆固醇酯转移蛋白基因的蛋白质截断型变异体与冠状动脉性心脏病风险的关系显示文摘随机对照试验结果表明,抑制胆固醇酯转运蛋白(cholesteryl ester transfer protein,CETP)的疗法并不能降低冠状动脉性心脏病(coronary heart disease,CHD)的发生风险。研究失败的可能原因包括靶目标无效、靶目标外小分子的不良反应和随机对照设计因素影响等。在编码药物靶点的基因中具有天然存在的遗传变异,以此为基础,人类研究可以深入了解针对基因产物的治疗的潜在功效和安全性。 | Nomura A Won HH Khera AV Takeuchi F Ito K McCarthy S Emdin CA Klarin D Natarajan P Zekavat SM Gupta N Peloso GM Borecki IB Teslovich TM Asselta R Duga S Merlini PA Correa A Kessler T Wilson JG Bown MJ Hall AS Braund PS Carey DJ Murray MF Kirchner HL Leader JB Lavage DR Manus JN Hartze DN Samani NJ Schunkert H Marrugat J Elosua R McPherson R Farrall M Watkins H Juang JJ Hsiung CA Lin SY Wang JS Tada H Kawashiri MA Inazu A Yamagishi M Katsuya T Nakashima E Nakatochi M Yamamoto K Yokota M Momozawa Y Rotter JI Lander ES Rader DJ Danesh J Ardissino D Gabriel S Willer CJ Abecasis GR Saleheen D Kubo M Kato N Ida Chen YD Dewey FE Kathiresan S 刘莉 叶鹏 | 2017 | 中华高血压杂志2017，25，9： | 2 |
| 6 | Hepatocyte growth factor levels in the vitreous of patients with proliferative vitreoretinopathy显示文摘 | Takeuchi S Matsuda A | 2000 | Am J Ophthalmol2000，，： | 1 |
| 7 | Changes in cerebral circulation and neuronal metabolism during chronic cerebral vasospasm after sub-arachnoid hemorrhage显示文摘 | Takeuchi H Tsuchida A | 2003 | International Congress Series2003，1251，： | 1 |
| 8 | Macrophage migration inhibitory factor levels in the vitreous of patients with proliferative diabetic retinopathy显示文摘 | Mitamura Y Takeuchi S Matsuda A | 2000 | Br J Ophthalmol2000，84，： | 1 |
| 9 | Recent progress in bulk glassy alloys显示文摘 | Inoue A Takeuchi A | 2002 | Trans JIM2002，43，8： | 1 |
| 10 | Recent progress in bulk glassy, nano- quasicrystalline and nanoerystalline alloys 显示文摘 | INOUE A TAKEUCHI A | 2004 | Materials Science and Engineering2004，37，： | 1 |
| 11 | Effects of chemical composition and dose on microstructure evolution and hardening of neutron-irradiated reactor pressure vessel steels 显示文摘 | Takeuchi T Kuramoto A Kameda J et ol | 2010 | Journal of Nuclear Materials2010，402，： | 1 |
| 12 | Ante- cedents and Consequences of the Perceived Adjust ment of Japanese Expatriates in the USA 显示文摘 | TAKEUCHI R YUN S RUSSELL J E A | 2001 | Inter- national Journal of Human Resource Management2001，13，8： | 1 |
| 13 | Design and evaluation ofnovel pH-sensitive chitosan nanoparticles for oral insulin delivery显示文摘 | Makhlof A Tozuka YC Takeuchi H | 2011 | European Journal of Pharmaceutical Sciences2011，42，5： | 1 |
| 14 | Neonatal repair of right interrupted aortic arch with cerebro-myocardial perfusion technique显示文摘 | Takeuchi K Masuzawa A Kohayashi J | 2011 | Interact Cardiovasc Thorac Surg2011，13，4： | 1 |
| 15 | Defensin-like polypeptide LUREs are pollen tube attractants secreted from synergid ceils显示文摘 | Okuda S Tsutsui H Shiina K Sprunck S Takeuchi H Yui R Kasahara R D HamamuraY Mizukami A S usaki D Kawano N Sakakibara T Namiki S Itoh K Otsuka K Matsuzaki M Nozaki H Kuroiwa T Nakano A Kanaoka M M Dresselhaus T Sasaki N Higashiyama T | | 0，，7236： | 1 |
| 16 | Characteristics of neu- ropsychological functions in inpatients with poorly-controlled type 2 diabetes mellitus显示文摘 | Takeuchi A Matsushima E Kato M | 2012 | J Diabetes Invest2012，3，3： | 1 |
| 17 | Classification of bulk metallic glasses by atomic size difference, beat of mixing and period of constituent elements and its application to characterization of the main alloying element 显示文摘 | Takeuchi A Inoue A | 2005 | Materials Transactions2005，46，12： | 1 |
| 18 | Inhibition of RSK/YB-1 signaling enhances the anti-cancer effect of enzalutamide in pros- rate cancer 显示文摘 | Shiota M Yokomizo A Takeuchi A | 2014 | Prostate2014，74，9： | 1 |
| 19 | Inhibition of RSK/YB-1signaling enhances the anti-cancer effect of enzalutamide in prostate cancer显示文摘 | Shiota M Yokomizo A Takeuchi A | 2014 | Prostate2014，74，9： | 1 |
| 20 | Anti-angiogenic action of hypethermia by suppressing gene expression and production of tumourderived vascular endothelial growth factor in vivo and in vitro显示文摘 | Sawaji Y Sato T Takeuchi A | 2002 | Br J Cancer2002，86，10： | 1 |
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