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| 1 | Endoscopic ultrasonography for gastric submucosal lesions显示文摘Gastric submucosal tumors(SMTs) are a rather frequent finding,occurring in about 0.36%of routine upper GIendoscopies.Endoscopic ultrasonography(EUS) has emerged as a reliable investigative procedure for evaluation of these lesions.Diagnostic EUS has the ability to differentiate intramural tumors from extraluminal compressions and can also show the layer of origin of gastric SMTs.Tumors can be further characterized by their layer of origin,echo pattern and margin.EUS-risk criteria of their malignant potential are presented,although the emergence of EUS-FNA has opened new indications for transmural tissue diagnosis and expanded the possibilities of EUS in SMTs of the stomach.Tissue diagnosis should address whether the SMT is a Gastrointestinal stromal tumour(GIST) or another tumor type and evaluate the malignant potential of a given GIST.However,there seems to be a lack of data on the optimal strategy in SMTs suspected to be GISTs with a negative EUS-FNA tissue diagnosis.The current management strategies,as well as open questions regarding their treatment are also presented. | Ioannis S Papanikolaou Konstantinos Triantafyllou Anastasia Kourikou Thomas Rsch | 2011 | World Journal of Gastrointestinal Endoscopy2011，3，5： | 44 |
| 2 | Gut microbiota and non-alcoholic fatty liver disease显示文摘BACKGROUND: Non-alcoholic fatty liver disease(NAFLD) is a common disorder with poorly understood pathogenesis. Beyond environmental and genetic factors,cumulative data support the causative role of gut microbiota in disease development and progression.DATA SOURCE: We performed a Pub Med literature search with the following key words: 'non-alcoholic fatty liver disease','non-alcoholic steatohepatitis','fatty liver','gut microbiota' and 'microbiome',to review the data implicating gut microbiota in NAFLD development and progression.RESULTS: Recent metagenomic studies revealed differences in the phylum and genus levels between patients with fatty liver and healthy controls. While bacteroidetes and firmicutes remain the dominant phyla among NAFLD patients,their proportional abundance and genera detection vary among different studies. New techniques indicate a correlation between the methanogenic archaeon(methanobrevibacter smithii) and obesity,while the bacterium akkermanshia municiphila protects against metabolic syndrome. Among NAFLD patients,small intestinal bacterial overgrowth detected by breath tests might induce gut microbiota and host interactions,facilitating disease development.CONCLUSIONS: There is evidence that gut microbiota participates in NAFLD development through,among others,obesity induction,endogenous ethanol production,inflammatory response triggering and alterations in choline metabolism. Further studies with emerging techniques are needed to further elucidate the microbiome and host crosstalk in NAFLD pathogenesis. | Paraskevas Gkolfakis George Dimitriadis Konstantinos Triantafyllou | 2015 | Hepatobiliary & Pancreatic Diseases International2015，14，6： | 22 |
| 3 | Current status of esophageal cancer treatment显示文摘Esophageal cancer(EC) remains one of the most common and aggressive diseases worldwide.This review discusses some debates in the modern management of the disease.Endoscopic procedures for early cancer(T1a-b) are now embedded in routine care and the challenge will be to more accurately select patients for endoscopic resection with or without adjuvant therapy.Perioperative multimodal therapies are associated with improved survival compared to surgery alone for locally advanced esophageal cancer.However, there is no global consensus on the optimal regimen.Furthermore, histological subtype(adenocarcinoma vs.squamous cell cancer) plays a role in the choice for treatment.New studies are underway to resolve some issues.The extent of the lymphadenectomy during esophagectomy remains controversial especially after neoadjuvant chemoradiation.The ideal operation balances between limiting surgical trauma and optimizing survival.Minimally invasive esophagectomy and enhanced recovery pathways are associated with decreased morbidity and faster recovery albeit there is no consensus yet what approach should be used.Finally, immune checkpoint inhibitors present promising preliminary results in the novel treatment of advanced or metastatic EC but their widespread application in clinical practice is still awaited. | Tania Triantafyllou Bas P L Wijnhoven | 2020 | Chinese Journal of Cancer Research2020，32，3： | 12 |
| 4 | Gene polymorphisms associated with functional dyspepsia显示文摘Functional dyspepsia(FD) is a constellation of functional upper abdominal complaints with poorly elucidated pathophysiology. However, there is increasing evidence that susceptibility to FD is influenced by hereditary factors. Genetic association studies in FD have examined genotypes related to gastrointestinal motility or sensation, as well as those related to inflammation or immune response. G-protein b3 subunit gene polymorphisms were first reported as being associated with FD. Thereafter, several gene polymorphisms including serotonin transporter promoter, interlukin-17 F, migration inhibitory factor, cholecystocynine-1 intron 1, cyclooxygenase-1, catechol-o-methyltransferase, transient receptor potential vanilloid 1 receptor, regulated upon activation normal T cell expressed and secreted, p22 PHOX, Toll like receptor 2, SCN10 A, CD14 and adrenoreceptors have been investigated in relation to FD; however, the results are contradictory. Several limitations underscore the value of current studies. Among others, inconsistencies in the definitions of FD and controls, subject composition differences regarding FD subtypes, inadequate samples, geographical and ethnical differences, as well as unadjusted environmental factors. Further well-designed studies are necessary to determine how targeted genes polymorphisms, influence the clinical manifestations and potentially the therapeutic response in FD. | Anastasia Kourikou George P Karamanolis George D Dimitriadis Konstantinos Triantafyllou | 2015 | World Journal of Gastroenterology2015，21，25： | 8 |
| 5 | Virtual reality simulators for gastrointestinal endoscopy training显示文摘The use of simulators as educational tools for medical procedures is spreading rapidly and many efforts have been made for their implementation in gastrointestinal endoscopy training. Endoscopy simulation training has been suggested for ascertaining patient safety while positively influencing the trainees' learning curve. Virtual simulators are the most promising tool among all available types of simulators. These integrated modalities offer a human-like endoscopy experience by combining virtual images of the gastrointestinal tract and haptic realism with using a customized endoscope. From their first steps in the 1980s until today, research involving virtual endoscopic simulators can be divided in two categories: investigation of the impact of virtual simulator training in acquiring endoscopy skills and measuring competence. Emphasis should also be given to the financial impact of their implementation in endoscopy, including the cost of these state-of-theart simulators and the potential economic benefits from their usage. Advances in technology will contribute to the upgrade of existing models and the development of new ones; while further research should be carried out to discover new fields of application. | Konstantinos Triantafyllou Lazaros Dimitrios Lazaridis George D Dimitriadis | 2014 | World Journal of Gastrointestinal Endoscopy2014，6，1： | 7 |
| 6 | Endoscopic treatments for chronic radiation proctitis显示文摘Chronic radiation proctitis is a complication that occurs in patients who receive radiation therapy for pelvic malignancies. The common presentation is with rectal bleeding, but also rectal pain, diarrhea, tenesmus and even passage of mucus can occur. The optimal treatment of bleeding due to radiation proctitis remains unclear. Among various therapeutic options, medical management is generally ineffective and surgical intervention has a high incidence of morbidity. Promising advances have been made in endoscopic therapy, including argon plasma coagulation (APC), formalin application as well as new techniques such as radio-frequency ablation and cryoablation. APC is a safe, highly effective and long-lasting therapy in patients with rectal bleeding associated with radiation proctitis. It has been shown that several sessions of APC reduce the rate of bleeding and therefore the blood transfusion requirements. Moreover, the effect of treatment is long lasting. However, best results are achieved in patients with mild to moderate radiation proctitis, leaving space for alternative treatments for patients with more severe disease. In patients with severe or refractoryradiation proctitis intra rectal formalin application is an appropriate treatment option. Radiofrequency ablation and cryoablation have shown efficacy as alternative methods in a limited number of patients with refractory chronic radiation proctitis. | George Karamanolis Panagiota Psatha Konstantinos Triantafyllou | 2013 | World Journal of Gastrointestinal Endoscopy2013，5，7： | 7 |
| 7 | Insulin action in muscle and adipose tissue in type 2 diabetes:The significance of blood flow显示文摘Under normal metabolic conditions insulin stimulates microvascular perfusion(capillary recruitment) of skeletal muscle and subcutaneous adipose tissue and thus increases blood flow mainly after meal ingestion or physical exercise.This helps the delivery of insulinitself but also that of substrates and of other signalling molecules to multiple tissues beds and facilitates glucose disposal and lipid kinetics.This effect is impaired in insulin resistance and type 2 diabetes early in the development of metabolic dysregulation and reflects early-onset endothelial dysfunction.Failure of insulin to increase muscle and adipose tissue blood flow results in decreased glucose handling.In fat depots,a blunted postprandial blood flow response will result in an insufficient suppression of lipolysis and an increased spill over of fatty acids in the circulation,leading to a more pronounced insulin resistant state in skeletal muscle.This defect in blood flow response is apparent even in the prediabetic state,implying that it is a facet of insulin resistance and exists long before overt hyperglycaemia develops.The following review intends to summarize the contribution of blood flow impairment to the development of the atherogenic dysglycemia and dyslipidaemia. | Vaia Lambadiari Konstantinos Triantafyllou George D Dimitriadis | 2015 | World Journal of Diabetes2015，6，4： | 6 |
| 8 | Colonoscopy attachments for the detection of precancerous lesions during colonoscopy:A review of the literature显示文摘Although colonoscopy has been proven effective in reducing the incidence of colorectal cancer through the detection and removal of precancerous lesions, it remains an imperfect examination, as it can fail in detecting up to almost one fourth of existing adenomas. Among reasons accounting for such failures, is the inability to meticulously visualize the colonic mucosa located either proximal to haustral folds or anatomic curves, including the hepatic and splenic flexures. In order to overcome these limitations, various colonoscope attachments aiming to improve mucosal visualization have been developed. All of them-transparent cap, Endocuff, Endocuff Vision and Endorings-are simply mounted onto the distal tip of the scope. In this review article, we introduce the rationale of their development, present their mode of action and discuss in detail the effect of their implementation in the detection of lesions during colonoscopy. | Paraskevas Gkolfakis Georgios Tziatzios Eleftherios Spartalis Ioannis S Papanikolaou Konstantinos Triantafyllou | 2018 | World Journal of Gastroenterology2018，24，37： | 5 |
| 9 | Omeprazole maintenance therapy prevents recurrent ulcer bleeding after surgery for duodenal ulcer显示文摘瞄准:与周期性的溃疡为十二指肠溃疡在外科以后流血在病人评估 omeprazole 维护治疗。方法:我们与周期性的溃疡为十二指肠溃疡在外科以后流血学习了 15 个连续病人。维护治疗在溃疡愈合以后被给的 Omeprazole (20 mg/d ) 。除了临床的后续,回廊 24-h 胃的 pH 试金与以前的十二指肠溃疡外科而是没有溃疡复发在那些病人和控制被执行在前并且在 omeprazole 治疗期间。结果:所有 15 溃疡在为 2 瞬间与 omeprazole (40 mg/d ) 被对待以后被愈合。有二的十一个病人(1-9 ) 周期性的溃疡流血的事件完成了后续(43, 12-72 瞬间) 。任何一个都没他们有一个流血事件当时在 omeprazole 上。一个病人中止了治疗并且有周期性的流血。在病人的胃的 pH<4 的中部的 24-h 部分时间是 80, 46-95% ,并且被归结为 32,由 omeprazole (P=0.002 ) 的 13-70% 。结论:有 omeprazole (20 mg/day ) 的长期的维护治疗在阻止周期性的溃疡流血是有效的。 | Konstantinos Demertzis Dimitrios Polymeros Theodoros Emmanuel Konstantinos Triantafyllou Pericles Tassios Spiros D Ladas | 2006 | World Journal of Gastroenterology2006，12，5： | 5 |
| 10 | Two cameras detect more lesions in the small-bowel than one显示文摘AIM:To explore the feasibility of dual camera capsule (DCC)small-bowel(SB)imaging and to examine if two cameras complement each other to detect more SB lesions.METHODS:Forty-one eligible,consecutive patients underwent DCC SB imaging.Two experienced investigators examined the videos and compared the total number of detected lesions to the number of lesions detected by each camera separately.Examination tolerability was assessed using a questionnaire.RESULTS:One patient was excluded.DCC cameras detected 68 positive findings(POS)in 20(50%)cases.Fifty of them were detected by the'yellow'camera,48 by the'green'and 28 by both cameras;44%(n=22)of the'yellow'camera’s POS were not detected by the'green'camera and 42%(n=20)of the'green' camera’s POS were not detected by the'yellow'camera.In two cases,only one camera detected significant findings.All participants had 216 findings of unknown significance(FUS).The'yellow','green'and both cameras detected 171,161,and 116 FUS,respectively;32%(n=55)of the'yellow'camera’s FUS were not detected by the'green'camera and 28%(n=45)of the'green'camera’s FUS were not detected by the 'yellow'camera.There were no complications related to the examination,and 97.6%of the patients would repeat the examination,if necessary.CONCLUSION:DCC SB examination is feasible and well tolerated.The two cameras complement each other to detect more SB lesions. | Konstantinos Triantafyllou Ioannis S Papanikolaou Kostis Papaxoinis Spiros D Ladas | 2011 | World Journal of Gastroenterology2011，17，11： | 5 |
| 11 | An unusual case of prolonged post-endoscopic retrograde cholangiopancreatography jaundice显示文摘Despite the effectiveness of endoscopic retrograde cholangiopancreatography(ERCP) for the treatment of choledocholithiasis, various complications have been described. We herein report the first case of prolonged postERCP jaundice due to toxicity of the contrast agent Iobitridol(~174;XENETIX, Guerbet, Roissy Cd G Cedex, France) in a patient who underwent ERCP with sphincterectomy and common bile duct stone removal. While clinical improvement and normalization of aminotransferases and cholestatic enzymes after the procedure, an unexplained increase of direct bilirubin was noticed. A second ERCP was performed one week later, excluding possible remaining choledocholithiasis. Nevertheless, serum direct bilirubin increased further up to 15 mg/d L. Other potential causes of direct hyperbilirubinemia were ruled out and patient's liver biopsy was compatible with drug-induced liver toxicity. Additionally, the cause-result time connection between the use of Iobitridol and bilirubin increase indicated the possibility of a toxic effect related to the repeated use of the particular contrast agent. Iobitridol, a contrast agent, can induce prolonged direct hyperbilirubinemia. | Georgios Tziatzios Paraskevas Gkolfakis Ioannis S Papanikolaou George Dimitriadis Konstantinos Triantafyllou | 2016 | Hepatobiliary & Pancreatic Diseases International2016，15，2： | 4 |
| 12 | Melatonin attenuates high fat diet-induced fatty liver disease in rats显示文摘AIM:To investigate melatonin's preventive action in oxidative stress in a rat model with high fat diet-induced non-alcoholic fatty liver disease(NAFLD).METHODS:NAFLD was induced by high fat diet(HFD)in adult,male,Wistar rats,weighing 180-230 g.After acclimatization for one week,they were randomly assigned to 6 experimental groups that comprised animals on regular diet plus 5 or 10 mg/kg melatonin,for 4 or 8 wk;animals on HFD,with or without 5 or 10 mg/kg melatonin,for 4 or 8 wk;and animals on HFD for 8 or 12 wk,with melatonin 10 mg/kg for the last 4 wk.Liver damage was assessed biochemically by the serum levels of alanine aminotransferase(ALT),aspartate aminotransferase(AST),and histologically.Lipid peroxidation and oxidative stress were assessed by malondialdehyde and glutathione levels in liver tissue.Lipidemic indices and portal vein pressure were also measured.RESULTS:Compared to rats not receiving melatonin,rats on 5 or 10 mg/kg of melatonin had lower mean liver weight(-5.0 g and-4.9 g)(P < 0.001)and lower liver weight to body weight ratio(-1.0%)(P < 0.001),for the two doses,respectively.All rats fed HFD without melatonin developed severe,grade Ⅲ,steatosis.Rats on HFD with concurrent use of melatonin showed significantly less steatosis,with grade Ⅲ steatosis observed in 1 of 29(3.4%)rats on 10 mg/kg melatonin and in 3 of 27(11.1%)rats on 5 mg/kg melatonin.Melatonin was ineffective in reversing established steatosis.Melatonin also had no effect on any of the common lipidemic serum markers,the levels of which did not differ significantly among the rats on HFD,irrespective of the use or not of melatonin.Liver cell necrosis was significantly less in rats on HFD receiving melatonin than in those not on melatonin,with the AST levels declining by a mean of 170 U/L(P = 0.01)and 224 U/L(P = 0.001),and the ALT levels declining by a mean of 62.9 U/L(P = 0.01)and 93.4 U/L(P < 0.001),for the 5 and 10 mg/kg melatonin dose,respectively.Melatonin mitigated liver damage due to peroxidation and oxidative stress in liver tissue as indicated by a significant decline in MDA production by 12.7(P < 0.001)and 12.2(P < 0.001)μmol/L/mg protein/mg tissue,and a significant increase in glutathione by 20.1(P = 0.004)and 29.2(P < 0.001)μmol/L/mg protein/mg tissue,for the 5 and 10 mg/kg melatonin dose,respectively.CONCLUSION:Melatonin can attenuate oxidative stress,lessen liver damage,and improve liver histology in rats with high fat diet-induced NAFLD,when given concurrently with the diet. | Gregorios Hatzis Panayiotis Ziakas Nikolaos Kavantzas Aggeliki Triantafyllou Panagiotis Sigalas Ioanna Andreadou Konstantinos Ioannidis Stamatios Chatzis Konstantinos Filis Alexandros Papalampros Fragiska Sigala | 2013 | World Journal of Hepatology2013，5，4： | 4 |
| 13 | Improved bowel preparation increases polyp detection and unmasks significant polyp miss rate显示文摘AIM: To retrospectively compare previous-day vs splitdose preparation in terms of bowel cleanliness and polyp detection in patients referred for polypectomy. METHODS: Fifty patients underwent two colonoscopies: one diagnostic in a private clinic and a second for polypectomy in a University Hospital. The latter procedures were performed within 12 wk of the index ones. Examinations were accomplished by two experienced endoscopists, different in each facility. Twenty-seven patients underwent screening/surveillance colonoscopy, while the rest were symptomatic. Previous day bowel preparation was utilized initially and splitdose for polypectomy. Colon cleansing was evaluated using the Aronchick scale. We measured the number of detected polyps, and the polyp miss rates per-polyp.RESULTS: Excellent/good preparation was reported in 38 cases with previous-day preparation(76%) vs 46 with split-dose(92%), respectively(P = 0.03). One hundred and twenty-six polyps were detected initially and 169 subsequently(P < 0.0001); 88 vs 126 polyps were diminutive(P < 0.0001), 25 vs 29 small(P = 0.048) and 13 vs 14 equal or larger than 10 mm. The miss rates for total, diminutive, small and large polyps were 25.4%, 30.1%, 13.7% and 6.6%, respectively. Multivariate analysis revealed that split-dose preparation was significantly associated(OR, P) with increased number of polyps detected overall(0.869, P < 0.001), in the right(0.418, P = 0.008) and in the left colon(0.452, P = 0.02). CONCLUSION: Split-dose preparation improved colon cleansing, enhanced polyp detection and unmasked significant polyp miss rates. | Ioannis S Papanikolaou Athanasios D Sioulas Nektarios Magdalinos Iosif Beintaris Lazaros-Dimitrios Lazaridis Dimitrios Polymeros Chrysoula Malli George D Dimitriadis Konstantinos Triantafyllou | 2015 | World Journal of Clinical Cases2015，3，10： | 4 |
| 14 | Role of pancreatic endoscopic ultrasonography in 2010显示文摘Endoscopic ultrasonography (EUS) was introduced 25 years ago aiming at better visualization of the pancreas compared to transabdominal ultrasonography. This update discusses the current evidence in 2010 concerning the role of EUS in the clinical management of patients with pancreatic disease. Major indications of EUS are:(1) Detection of common bile duct stones (e.g. in acute pancreatitis); (2) Detection of small exo-and endocrine pancreatic tumours; and (3) Performance of fine needle aspiration in pancreatic masses depending on therapeutic consequences. EUS seems to be less useful in cases of chronic pancreatitis and cystic pan-creatic lesions. Moreover the constant improvement of computed tomography has limited the role of EUS in pancreatic cancer staging. On the other hand,new therapeutic options are available due to EUS,such as pancreatic cyst drainage and celiac plexus neurolysis,offering a new field in which new techniques may arise. So the main goal of this review is to determine the exact role of EUS in a number of pancreatic and biliary diseases. | Ioannis S Papanikolaou Pantelis S Karatzas Konstantinos Triantafyllou Andreas Adler | 2010 | World Journal of Gastrointestinal Endoscopy2010，2，10： | 3 |
| 15 | Colon capsule endoscopy is feasible to perform after incomplete colonoscopy and guides further workup in clinical practice显示文摘 | Konstantinos Triantafyllou Nikos Viazis Panagiotis Tsibouris Georgios Zacharakis Chryssostomos Kalantzis Demetrios G. Karamanolis Spiros D. Ladas | 2014 | Gastrointestinal Endoscopy2014，，2： | 3 |
| 16 | Sedation-risk-free colonoscopy for minimizing the burden of colorectal cancer screening显示文摘Unsedated colonoscopy is available worldwide,but is not a routine option in the United States(US).We conducted a literature review supplemented by our experience and expert commentaries to provide data to support the use of unsedated colonoscopy for colorectal cancer screening.Medline data from 1966 to 2009 were searched to identify relevant articles on the subject.Data were summarized and co-authors provided critiques as well as accounts of unsedated colonoscopy for screening and surveillance.Diagnostic colonoscopy was initially dev eloped as an unsedated procedure.Procedure-re lated discomfort led to wide adoption of sedation in the US,although unsedated colonoscopy remains the usual practice elsewhere.The increased use of colonoscopy for colorectal cancer screening in healthy,asymptomatic individuals suggests a reass-essment of the burden of sedation in colonoscopy for screening is appropriate in the US for lowering costs and minimizing complications for patients.A water method developed to minimize discomfort has shown promise to enhance outcomes of unsedated colonoscopy.The use of scheduled,unsedated colono scopy in the US appears to be feasible for colorectal cancer screening.Studies to assess its applicability in diverse practice settings deserve to be conducted and supported. | Felix W Leung Abdulrahman M Aljebreen Emilio Brocchi Eugene B Chang Wei-Chih Liao Takeshi Mizukami Melvin Schapiro Konstantinos Triantafyllou | 2010 | World Journal of Gastrointestinal Endoscopy2010，2，3： | 3 |
| 17 | European Society of Gastrointestinal Endoscopy (ESGE): Recommendations (2009) on clinical use of video capsule endoscopy to investigate small-bowel, esophageal and colonic diseases显示文摘 | S. Ladas K. Triantafyllou C. Spada M. Riccioni J.-F. Rey Y. Niv M. Delvaux R. de Franchis G. Costamagna | 2010 | Endoscopy2010，，03： | 2 |
| 18 | Can we improve the diagnostic yield of small bowel video-capsule endoscopy?显示文摘Video-capsule endoscopy has revolutionized the examination of small bowel mucosa.However,this modality is relatively young and its diagnostic yield is low.Herein,we discuss different approaches to improve examination's diagnostic yield.There are strong data supporting some of them while there is speculation about the rest.As capsule endoscopy continues to evolve there is also a strong belief that technology will overcome at least some of the obst acles that hamper capsule endoscopy's diagnostic yield sometime in the near future. | Konstantinos Triantafyllou | 2010 | World Journal of Gastrointestinal Endoscopy2010，2，5： | 2 |
| 19 | A study on the migration of organic pollutants from recycled paperboard packaging materials to solid food matrices显示文摘 | V.I. Triantafyllou K. Akrida-Demertzi P.G. Demertzis | 2006 | Food Chemistry2006，，4： | 2 |
| 20 | European Society of Gastrointestinal Endoscopy (ESGE): Recommendations (2009) on clinical use of video capsule endoscopy to investigate small-bowel, esophageal and colonic diseases显示文摘 | S. Ladas K. Triantafyllou C. Spada M. Riccioni J.-F. Rey Y. Niv M. Delvaux R. de Franchis G. Costamagna | 2010 | Endoscopy2010，，03： | 2 |
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