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2327篇 您的检索式:作者名="Kitano"
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1Diagnosis of subepithelial tumors in the upper gastrointestinal tract by endoscopic ultrasonography显示文摘Endoscopic ultrasonography(EUS) is the most accurate procedure for detecting and diagnosing subepithelial tumors,due to its higher sensitivity and specificity than other imaging modalities.EUS can characterize lesions by providing information on echogenic origin,size,borders,homogeneity,and the presence of echogenic or anechoic foci.Linear echoendoscopes,and recently also electronic radial echoendoscopes,can be used with color Doppler or power Doppler to assess the vascular signals from subepithelial masses,and thus permit the differentiation of vascular structures from cysts,as well as the assessment of the tumor blood supply.However,the diagnostic accuracy of EUS imaging alone has been shown to be low in subepithelial lesions with 3rd and 4th layers.It is also difficult to differentiate exactly between benign and malignant tumors and to gain an accurate picture of histology using EUS.On the other hands,EUS guided fine needle aspiration(EUS-FNA) can provide samples for cytologic or histologic analysis.Hypoechoic lesions of the 3rd and the 4th EUS layers,more than in 1 cm diameter are recommended,and histologic confirmation using endoscopic submucosal resection or EUSFNA should be obtained when possible.Therefore,EUSFNA plays an important role in the clinical management of subepithelial tumors.Furthermore improvements in endoscopic technology are expected to be more useful modalities in differential diagnosis and discrimination between benign and malignant subepithelialHiroki Sakamoto Masayuki Kitano Masatoshi Kudo 2010World Journal of Radiology2010,2,8:40
2Removal of diminutive colorectal polyps: A prospective randomized clinical trial between cold snare polypectomy and hot forceps biopsy显示文摘AIM To compare the efficacy and safety of cold snare polypectomy(CSP) and hot forceps biopsy(HFB) for diminutive colorectal polyps.METHODS This prospective, randomized single-center clinical trial included consecutive patients ≥ 20 years of age with diminutive colorectal polyps 3-5 mm from December 2014 to October 2015. The primary outcome measures were en-bloc resection(endoscopic evaluation) and complete resection rates(pathological evaluation). The secondary outcome measures were the immediate bleeding or immediate perforation rate after polypectomy, delayed bleeding or delayed perforation rate after polypectomy, use of clipping for bleeding or perforation, and polyp retrieval rate. Prophylactic clipping after polyp removal wasn't routinely performed.RESULTS Two hundred eight patients were randomized into the CSP(102), HFB(106) and 283 polyps were evaluated(CSP: 148, HFB: 135). The en-bloc resection rate was significantly higher with CSP than with HFB [99.3%(147/148) vs 80.0%(108/135), P < 0.0001]. The complete resection rate was significantly higher with CSP than with HFB [80.4%(119/148) vs 47.4%(64/135), P < 0.0001]. The immediate bleeding rate was similar between the groups [8.6%(13/148) vs 8.1%(11/135), P = 1.000], and endoscopic hemostasis with hemoclips was successful in all cases. No cases of perforation or delayed bleeding occurred. The rate of severe tissue injury to the pathological specimen was higher HFB than CSP [52.6%(71/135) vs 1.3%(2/148), P < 0.0001]. Polyp retrieval failure was encountered CSP(7), HFB(2).CONCLUSION CSP is more effective than HFB for resecting diminutive polyps. Further long-term follow-up study is required.Yoriaki Komeda Hiroshi Kashida Toshiharu Sakurai George Tribonias Kazuki Okamoto Masashi Kono Mitsunari Yamada Teppei Adachi Hiromasa Mine Tomoyuki Nagai Yutaka Asakuma Satoru Hagiwara Shigenaga Matsui Tomohiro Watanabe Masayuki Kitano Takaaki Chikugo Yasutaka Chiba Masatoshi Kudo 2017World Journal of Gastroenterology2017,23,2:20
3SMALL ORGAN SIZE 1 and SMALL ORGAN SIZE 2/DWARF AND LOW-TILLERING Form aComplex to Integrate Auxin and Brassinosteroid Signaling in Rice显示文摘尽管植物生长素和 brassinosteroid (BR ) synergistically 控制各种各样的植物回答,位于 auxin-BR 串音下面的分子的机制很好没被理解。我们以前识别了 SMOS1,一个调整植物生长素的 APETALA2 类型抄写因素,作为小机关的原因的基因缩放 1 (smos1 ) 被各种各样的机关的一种减少的最后的尺寸在米饭描绘的异种。在这研究,我们识别了另一 smos 异种, smos2,哪个表演与 smos1 难区分的显型。SMOS2 与以前报导的矮子和 LOW-TILLERING (DLT ) 相同,它编码涉及 BR 发信号的 GRAS 蛋白质。SMOS1 和 SMOS2/DLT 身体上交往合作地在酵母并且在米饭原子核提高 transcriptional transactivation 活动。一致地, OsPHI-1 的表示, SMOS1 的一个直接目标,当 SMOS1 和 SMOS2/DLT 蛋白质两个都是在米饭房间的现在时,仅仅是 upregulated。一起拿,我们的结果建议 SMOS1 和 SMOS2/DLT 在在米饭表明串音的 auxin-BR 上形成重点建筑群。Ko Hirano Hideki Yoshida Koichiro Aya Mayuko Kawamura Makoto Hayashi Tokunori Hobo Karma Sato-lzawa Hidemi Kitano Miyako Ueguchi-Tanaka Makoto Matsuoka 2017Molecular Plant2017,10,4:20
4Urgent endoscopic ultrasound-guided choledochoduodenostomy for acute obstructive suppurative cholangitis-induced sepsis显示文摘Acute obstructive suppurative cholangitis(AOSC) due to biliary lithiasis is a life-threatening condition that requires urgent biliary decompression. Although endoscopic retrograde cholangiopancreatography(ERCP) with stent placement is the current gold standard for biliary decompression, it can sometimes be difficult because of failed biliary cannulation. In this retrospective case series, we describe three cases of successful biliary drainage with recovery from septic shock after urgent endoscopic ultrasound-guided choledochoduodenostomy(EUS-CDS) was performed for AOSC due to biliary lithiasis. In all three cases, technical success in inserting the stents was achieved and the patients completely recovered from AOSC with sepsis in a few days after EUS-CDS. There were no procedure-related complications. When initial ERCP fails, EUS-CDS can be an effective life-saving endoscopic biliary decompression procedure that shortens the procedure time and prevents post-ERCP pancreatitis, particularly in patients with AOSC-induced sepsis.Kosuke Minaga Masayuki Kitano Hajime Imai Kentaro Yamao Ken Kamata Takeshi Miyata Shunsuke Omoto Kumpei Kadosaka Tomoe Yoshikawa Masatoshi Kudo 2016World Journal of Gastroenterology2016,22,16:18
5Laparoscopic appendectomy for acute appendicitis: How to discourage surgeons using inadequate therapy显示文摘Acute appendicitis(AA) develops in a progressive and irreversible manner, even if the clinical course of AA can be temporarily modified by intentional medications. Reliable and real-time diagnosis of AA can be made based on findings of the white blood cell count and enhanced computed tomography. Emergent laparoscopic appendectomy(LA) is considered as the first therapeutic choice for AA. Interval/delayed appendectomy at 6-12 wk after disease onset is considered as unsafe with a high recurrent rate during the waiting time. However, this technique may have some advantages for avoiding unnecessary extended resection in patients with an appendiceal mass. Nonoperative management of AA may be tolerated only in children. Postoperative complications increase according to the patient's factors, and temporal avoidance of emergent general anesthesia may be beneficial for high-risk patients. The surgeon's skill and cooperation of the hospital are important for successful LA. Delaying appendectomy for less than 24 h from diagnosis is safe. Additionally, a semi-elective manner(i.e., LA within 24 h after onset of symptoms) may be paradoxically acceptable, according to the factors of the patient, physician, and institution. Prompt LA is mandatory for AA. Fortunately, the Japanese government uses a universal health insurance system, which covers LA.tomohide hori takafumi machimoto yoshio kadokawa toshiyuki hata tatsuo ito shigeru kato daiki yasukawa yuki aisu yusuke kimura maho sasaki yuichi takamatsu taku kitano shigeo hisamori tsunehiro yoshimura 2017World Journal of Gastroenterology2017,23,32:18
6手术期间血糖控制对糖尿病视网膜病变和黄斑病变的影响显示文摘目的:评估手术期间血糖控制对糖尿病视网膜病变和黄斑病变进展的影响。Chikako Suto Sadao Hori SatoshI Kato Kanemitsu Muraoka Shigehiko Kitano 刘亮(译) 2006美国医学会眼科杂志(中文版)2006,18,4:16
7Endoscopic ultrasound-guided gallbladder drainage for acute cholecystitis: Long-term outcomes after removal of a self-expandable metal stent显示文摘AIM To assess the long-term outcomes of this procedure after removal of self-expandable metal stent(SEMS). The efficacy and safety of endoscopic ultrasoundguided gallbladder drainage(EUS-GBD) with SEMS were also assessed.METHODS Between January 2010 and April 2015, 12 patients with acute calculous cholecystitis, who were deemed unsuitable for cholecystectomy, underwent EUSGBD with a SEMS. EUS-GBD was performed under the guidance of EUS and fluoroscopy, by puncturing the gallbladder with a needle, inserting a guidewire, dilating the puncture hole, and placing a SEMS. TheSEMS was removed and/or replaced with a 7-Fr plastic pigtail stent after cholecystitis improved. The technical and clinical success rates, adverse event rate, and recurrence rate were all measured.RESULTS The rates of technical success, clinical success, and adverse events were 100%, 100%, and 0%, respectively. After cholecystitis improved, the SEMS was removed without replacement in eight patients, whereas it was replaced with a 7-Fr pigtail stent in four patients. Recurrence was seen in one patient(8.3%) who did not receive a replacement pigtail stent. The median follow-up period after EUS-GBD was 304 d(78-1492).CONCLUSION EUS-GBD with a SEMS is a possible alternative treatment for acute cholecystitis. Long-term outcomes after removal of the SEMS were excellent. Removal of the SEMS at 4-wk after SEMS placement and improvement of symptoms might avoid migration of the stent and recurrence of cholecystitis due to food impaction.Ken Kamata Mamoru Takenaka Masayuki Kitano Shunsuke Omoto Takeshi Miyata Kosuke Minaga Kentaro Yamao Hajime Imai Toshiharu Sakurai Tomohiro Watanabe Naoshi Nishida Masatoshi Kudo 2017World Journal of Gastroenterology2017,23,4:15
8Can the biliary enhancement of Gd-EOB-DTPA predict the degree of liver function?显示文摘BACKGROUND: Excretion of gadolinium-ethoxybenzyl-diethyl- enetriamine pentaacetic acid (Gd-EOB-DTPA) in the bile may be related to liver function, because of elimination from the liver after preferential uptake by hepatocytes. The purpose of this study was to investigate the relation between liver and biliary enhancement in patients with or without liver dysfunction, and to compare the tumor-to-liver contrast in these patients. METHODS: Forty patients [group 1: normal liver and Child Pugh class A in 20 patients, group 2: Child-Pugh class B in 18 patients and Child-Pugh C in 2] were evaluated. All patients underwent MR imaging of the liver using a 1.5-Tesla system. T1 weighted 3D images were obtained at 5, 10, 15 and 20 minutes after Gd-EOB-DTPA injection. The relation between group 3 (total bilirubin <1.8 mg/dL) and group 4 (total bilirubin ≥1.8 mg/dL) was investigated at 20 minutes. Liver and biliary signals were measured, and compared between groups 1 and 2 or groups 3 and 4. Tumor-to-liver ratio was also evaluated between groups 1 and 2. Scheffé's post-hoc test after two-way repeated measures ANOVA and Pearson's correlation test were used for statistical analysis. RESULTS: Liver enhancement showed significant difference at all time points between groups 1 and 2. Biliary enhancement did not show a significant difference between groups 1 and 2 at 5 minutes, but did at 10, 15 and 20 minutes. At 20 minutes significant differences between groups 3 and 4 were seen for liver and biliary enhancement. At all time points, liver enhancement correlated with biliary enhancement in both groups. At 5 minutes and 20 minutes, statistical differences between groups 1 and 2 were seen for tumor-to-liver ratio.CONCLUSIONS: The degree of biliary enhancement has a close correlation to that of liver enhancement. It is especially important that insufficient liver enhancement causes lower tumor-to-liver contrast in the hepatobiliary phase of Gd-EOB- DTPA.Masahiro Okada Kazunari Ishii Kazushi Numata Tomoko Hyodo Seishi Kumano Masayuki Kitano Masatoshi Kudo Takamichi Murakami 2012Hepatobiliary & Pancreatic Diseases International2012,11,3:13
9Diagnosis of pancreatic tumors by endoscopic ultrasonography显示文摘Pancreatic tumors are highly diverse, as they can be solid or cystic, and benign or malignant. Since their imaging features overlap considerably, it is often difficult to characterize these tumors. In addition, small pancreatic tumors, especially those less than 2 cm in diameter, are difficult to detect and diagnose. For characterizing pancreatic tumors and detecting small pancreatic tumors, endoscopic ultrasonography (EUS) is the most sensitive of the imaging procedures currently available. This technique also provides good results in terms of the preoperative staging of pancreatic tumors. EUS-guided fine needle aspiration (EUS-FNA) has also proved to be a safe and useful method for tissue sampling of pancreatic tumors. Despite these advantages, however, it is still difficult to differentiate between be-nign and malignant, solid or cystic pancreatic tumors, malignant neoplasms, and chronic pancreatitis using EUS, even when EUS-FNA is performed. Recently, contrast-enhanced EUS with Doppler mode (CE-EUS) employing ultrasound contrast agents, which indicate vascularization in pancreatic lesions, has been found to be useful in the differential diagnosis of pancreatic tumors, especially small pancreatic tumors. However, Doppler ultrasonography with contrast-enhancement has several limitations, including blooming artifacts, poor spatial resolution, and low sensitivity to slow flow. Consequently, an echoendoscope was developed recently that has a broad-band transducer and an imaging mode that was designed specifically for contrastenhanced harmonic EUS (CEH-EUS) with a secondgeneration ultrasound contrast agent. The CEH-EUS technique is expected to improve the differential diagnosis of pancreatic disease in the future. This review describes the EUS appearances of common solid and cystic pancreatic masses, the diagnostic accuracy of EUS-FNA, and the relative efficacies and advantages of CE-EUS and CEH-EUS along with their relative advantages and their complementary roles in clinical practice.Hiroki Sakamoto Masayuki Kitano Ken Kamata Muhammad El-Masry Masatoshi Kudo 2010World Journal of Radiology2010,2,4:11
10上海和宜兴地区食品和人乳腺组织中有机氯农药污染现状显示文摘[目的 ]了解上海和宜兴地区环境和人体中有机氯农药的污染现状。 [方法 ]分别在上海和宜兴两城市采集2 0种食物样品及 5份人乳腺组织 ,采用GC ECD方法对样品中有机氯含量进行测定。 [结果 ]滴滴涕及其代谢物 (DDTs)是此次检测到的主要有机氯农药污染物 ,DDTs、六六六 (HCHs)、六氯苯及其代谢物 (HCB)、氯丹 (CHLs)在食品中的检出率分别为 85 %、64 %、5 9%和 5 3 % ,食品中HCHs ,HCB ,CHLs含量较低 ;而人乳腺组织中DDTs和HCHs的含量很高 ,可分别达 190 0 0ng/g脂肪和 170 0 0ng/g脂肪。 [结论 ]上海及宜兴地区食物和人乳腺组织中普遍还能检测到有机氯农药的残留 。李卫华 张蕴晖 范奇元 Nakata H Kitano T Abe S 丁训诚 2005环境与职业医学2005,22,1:10
11Contrast-enhanced harmonic endoscopic ultrasonography for assessment of lymph node metastases in pancreatobiliary carcinoma显示文摘AIM: To assess the usefulness of contrast-enhanced harmonic endoscopic ultrasonography(CH-EUS) for lymph node metastasis in pancreatobiliary carcinoma.METHODS: All patients suspected of pancreatobiliary carcinoma with visible lymph nodes after standard EUS between June, 2009 and January, 2012 were enrolled.In the primary analysis, patients with successful EUSfine needle aspiration(FNA) were included. The lymph nodes were assessed by several standard EUS variables(short and long axis lengths, shape, edge characteristic and echogenicity), color Doppler EUS variable [central intranodal blood vessel(CIV) presence] and CH-EUS variable(heterogeneous/homogeneous enhancement patterns). The diagnostic accuracy relative to EUSFNA was calculated. In the second analysis, N-stage diagnostic accuracy of CH-EUS was compared with EUS-FNA in patients who underwent surgical resection.RESULTS: One hundred and nine patients(143 lymph nodes) fulfilled the criteria. The short axis cutoff ≥ 13 mm predicted malignancy with a sensitivity and specificity of 72% and 85%, respectively. These values were 72% and 63% for the long axis cut-off ≥ 20 mm, 62% and 75% for the round shape variable, 81% and 30% for the sharp edge variable, 66% and 61% for the hypoechogenicity variable, 70% and 72% for the CIV-absent variable, and 83% and 91% for the heterogeneous CH-EUS-enhancement variable, respectively. CH-EUS was more accurate than standard and color Doppler EUS, except the short axis cut-off. Notably, three patients excluded because of EUS-FNA failure were correctly N-staged by CH-EUS.CONCLUSION: CH-EUS complements standard and color Doppler EUS and EUS-FNA for assessment of lymph node metastases.Takeshi Miyata Masayuki Kitano Shunsuke Omoto Kumpei Kadosaka Ken Kamata Hajime Imai Hiroki Sakamoto Naoshi Nisida Yogesh Harwani Takamichi Murakami Yoshifumi Takeyama Yasutaka Chiba Masatoshi Kudo 2016World Journal of Gastroenterology2016,22,12:7
12Familial pancreatic cancer: Concept, management and issues显示文摘Familial pancreatic cancer (FPC) is broadly defined as two first-degree-relatives with pancreatic cancer (PC) and accounts for 4%-10% of PC. Several genetic syndromes, including Peutz-Jeghers syndrome, hereditary pancreatitis, hereditary breast-ovarian cancer syndrome(HBOC), Lynch syndrome, and familial adenomatous polyposis (FAP), also have increased risks of PC, but the narrowest definition of FPC excludes these known syndromes. When compared with other familial tumors, proven genetic alterations are limited to a small proportion (<20%) and the familial aggregation is usually modest. However, an ethnic deviation (Ashkenazi Jewish>Caucasian) and a younger onset are common also in FPC. In European countries, 'anticipation' is reported in FPC families, as with other hereditary syndromes; a trend toward younger age and worse prognosis is recognized in the late years. The resected pancreases of FPC kindred often show multiple pancreatic intraepithelial neoplasia (Pan IN) foci, with various K-ras mutations, similar to colorectal polyposis seen in the FAP patients. As with HBOC patients, a patient who is a BRCA mutation carrier with unresectable pancreatic cancer (accounting for 0%-19% of FPC patients) demonstrated better outcome following platinum and Poly (ADP-ribose) polymerase inhibitor treatment. Western countries have established FPC registries since the 1990 s and several surveillance projects for highrisk individuals are now ongoing to detect early PCs. Improvement in lifestyle habits, including non-smoking, is recommended for individuals at risk. In Japan, the FPC study group was initiated in 2013 and the Japanese FPC registry was established in 2014 by the Japan Pancreas Society.Hiroyuki Matsubayashi Kyoichi Takaori Chigusa Morizane Hiroyuki Maguchi Masamichi Mizuma Hideaki Takahashi Keita Wada Hiroko Hosoi Shinichi Yachida Masami Suzuki Risa Usui Toru Furukawa Junji Furuse Takamitsu Sato Makoto Ueno Yoshimi Kiyozumi Susumu Hijioka Nobumasa Mizuno Takeshi Terashima Masaki Mizumoto Yuzo Kodama Masako Torishima Takahisa Kawaguchi Reiko Ashida Masayuki Kitano Keiji Hanada Masayuki Furukawa Ken Kawabe Yoshiyuki Majima Toru Shimosegawa 2017World Journal of Gastroenterology2017,23,6:5
13A multicenter study on oncologic outcome of laparoscopic gastrectomy for early cancer in Japan显示文摘Kitano S Shiraishi N Uyama I 0,,01:4
14Current status of laparoscopic gastrectomy for cancer in Japan显示文摘S. Kitano N. Shiraishi 2004Surgical Endoscopy2004,,2:4
15A randomized controlled trial comparing open vs laparoscopy-assisted distal gastrectomy for the treatment of early gastric cancer: An interim report显示文摘Seigo Kitano Norio Shiraishi Kyuzo Fujii Kazuhiro Yasuda Masafumi Inomata Yosuke Adachi 2002Surgery2002,,1:4
16A Multicenter Study on Oncologic Outcome of Laparoscopic Gastrectomy for Early Cancer in Japan显示文摘Seigo Kitano Norio Shiraishi Ichiro Uyama Kenichi Sugihara Nobuhiko Tanigawa 2007Annals of Surgery2007,,1:4
1764-slice multidetector computed tomography evaluation of gastrointestinal tract perforation site: detectability of direct findings in upper and lower GI tract显示文摘Sota Oguro Tomohiro Funabiki Koji Hosoda Yukio Inoue Takashi Yamane Michihiro Sato Mitsuhide Kitano Masahiro Jinzaki 2010European Radiology2010,,6:3
18Endoscopic ultrasound-guided biliary drainage for right hepatic bile duct obstruction: novel technical tips显示文摘Takeshi Ogura Tatsushi Sano Saori Onda Akira Imoto Daisuke Masuda Kazuhiro Yamamoto Masayuki Kitano Toshihisa Takeuchi Takuya Inoue Kazuhide Higuchi 2014Endoscopy2014,,:3
19Laparoscopy-assisted Billroth I gastrectomy显示文摘Kitano S Iso Y Moriyama M 0,,02:3
20Minimally invasive approaches for gastric cancer—Japanese experiences显示文摘Tsuyoshi Etoh Masafumi Inomata Norio Shiraishi Seigo Kitano 2012J. Surg. Oncol2012,,3:2
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