Gastroenterology Research and Practice http://www.hindawi.com The latest articles from Hindawi Publishing Corporation © 2016 , Hindawi Publishing Corporation . All rights reserved. Splenectomy versus Partial Splenic Embolization for Massive Splenomegaly Secondary to Hepatitis B-Related Liver Cirrhosis: A Case-Control Study Wed, 22 Jun 2016 14:25:48 +0000 http://www.hindawi.com/journals/grp/2016/3471626/ Background. Both splenectomy (SP) and partial splenic embolization (PSE) are used to treat massive splenomegaly (MSM) secondary to hepatitis B-related liver cirrhosis (HB-LC). This retrospective case-control study was conducted to compare the effects of SP and PSE on these patients. Methods. From July 2004 to January 2012, patients with MSM secondary to HB-LC who underwent SP or PSE were 1 : 1 : 1 matched with similar nonsurgery patients, respectively. Intraoperative situation, hematological indices, liver function, HBV DNA level, HBeAg seroconversion rate, morbidity, and mortality at 6 months postoperatively were compared. Results. Operative time, estimated blood loss, blood transfusion rate, severe pain, postoperative stay, and portal vein thrombosis (PVT) rate in the PSE group were significantly superior to the SP group, although SP and PSE were similar in liver function improvement, HBV suppression, morbidity, and mortality at 6 months postoperatively, and SP even improved WBC and PLT counts higher than PSE. Conclusion. Both SP and PSE are effective in improving liver function, increasing WBC and PLT counts, and suppressing replication of HBV for MSM secondary to HB-LC. Although postoperative improvement in WBC and PLT counts by SP can be higher than PSE, PSE is simple and minimally invasive and has a lower incidence of PVT. Shoufei Jiao, Hongxing Chen, Youlong Wang, Jiye Zhu, Jingwang Tan, and Jie Gao Copyright © 2016 Shoufei Jiao et al. All rights reserved. Comparison of Survival Rates, Tumor Stages, and Localization in between Obese and Nonobese Patients with Gastric Cancer Tue, 21 Jun 2016 10:47:00 +0000 http://www.hindawi.com/journals/grp/2016/9382750/ Purpose. In this study we tried to determine the association between body-mass index (BMI), survival rate, and the stage of tumor at the time of diagnosis in patients with gastric cancer. Methods. A total of 270 gastric cancer patients’ hospital records were retrospectively evaluated. Patients were grouped according to their BMI at the time of tumor diagnosis. Tumor stages at admission were compared according to their BMI values. Results. There were no differences in OS among BMI subgroups (). The percent of patients with stage III tumor was significantly higher in nonobese while the percent of stage IV tumor was surprisingly higher in obese patients ( was 0.011 and 0.004, resp.). Percent of patients who did not have any surgical intervention was significantly lower in overweight and obese patients than normal and/or underweight patients. Conclusions. At the time of diagnosis, obese patients had significantly higher percent of stage IV tumor than nonobese patients. Despite of that, there were no differences in survival rates among BMI subgroups. Our study results are consistent with “obesity paradox” in gastric cancer patients. We also did not find any relationship between BMI and localization of gastric tumor. Hakan Kocoglu, Hakan Dogan, Basak Oguz, Sibel Ocak Serin, Yildiz Okuturlar, Meral Gunaldi, Betul Erismis, Bahar Ozdemir, Deniz Tural, Mehmet Hursitoglu, Ozlem Harmankaya, and Abdulbaki Kumbasar Copyright © 2016 Hakan Kocoglu et al. All rights reserved. High Dose Ilaprazole/Amoxicillin as First-Line Regimen for Helicobacter pylori Infection in Korea Sun, 19 Jun 2016 11:23:07 +0000 http://www.hindawi.com/journals/grp/2016/1648047/ Objective. The eradication rate of Helicobacter pylori (H. pylori) following standard triple therapy has declined over the past few decades. This study has determined whether high dose dual therapy (PPI and amoxicillin) is adequate for eradicating H. pylori in Korea. Methods. This was an open-labeled study of H. pylori infected treatment-naive patients. Subjects received dual therapy for 14 days: ilaprazole 40 mg tablets given twice a day and amoxicillin 750 mg tablets given 4 times a day. At the end of the therapy, the subjects visited the clinic to confirm compliance and monitor for any side effects. Subjects visited again after 4–6 weeks to confirm H. pylori status through a urea breath test. Results. The cure rate of H. pylori was 79.3% (23 of 29) (95% confidence interval: 61.6–90.2) in the intention-to-treat analysis and 82.1% (23 of 28) in the per-protocol analysis. Compliance rates were high (96.6%) and side effects were minimal and tolerable. Conclusion. A high dose of ilaprazole + amoxicillin was ineffective as the first-line therapy for eradicating H. pylori in Korea. Future studies should focus on intragastric pH measurements and assess amoxicillin resistance. WonGun Kwack, YunJeong Lim, ChiYeon Lim, and David Y. Graham Copyright © 2016 WonGun Kwack et al. All rights reserved. Risk and Surveillance of Cancers in Primary Biliary Tract Disease Sun, 19 Jun 2016 09:07:50 +0000 http://www.hindawi.com/journals/grp/2016/3432640/ Primary biliary diseases have been associated in several studies with various malignancies. Understanding the risk and optimizing surveillance strategy of these malignancies in this specific subset of patients are an important facet of clinical care. For instance, primary sclerosing cholangitis is associated with an increased risk for cholangiocarcinoma (which is very challenging to diagnose) and when IBD is present for colorectal cancer. On the other hand, primary biliary cirrhosis patients with cirrhosis or not responding to 12 months of ursodeoxycholic acid therapy are at increased risk of hepatocellular carcinoma. In this review we will discuss in detail the risks and optimal surveillance strategies for patients with primary biliary diseases. Valery Hrad, Yoftahe Abebe, Syed Haris Ali, Jared Velgersdyk, Mohammed Al Hallak, and Mohamad Imam Copyright © 2016 Valery Hrad et al. All rights reserved. Tacrolimus for Remission Induction and Maintenance Therapy in Patients with Ulcerative Colitis: A Retrospective Evaluation Study Thu, 16 Jun 2016 09:58:36 +0000 http://www.hindawi.com/journals/grp/2016/5956316/ Background. In this retrospective study, we compared the efficacy of tacrolimus (TAC) or prednisolone (PSL) for maintenance therapy in patients with ulcerative colitis (UC) at remission. Methods. The study patients were followed up for at least one year after induction of remission with either PSL (, between April 2004 and March 2014) or TAC (, between April 2009 and March 2014). The clinical features and relapse rates were compared in the two groups. Maintenance therapy in the TAC group included TAC alone, AZA alone, and TAC plus AZA. Results. The recurrence rates at 1500 days after remission were 61% and 46% for the PSL and TAC groups, respectively (). The recurrence rates at 600 days for TAC, AZA, and TAC + AZA maintenance groups were 24%, 49%, and 55%, respectively. Nephrotoxicity developed in 16 patients on TAC maintenance therapy. Conclusions. TAC monotherapy is a potential alternative especially for PSL nonresponders or those intolerant to AZA. However, patients on TAC therapy should be regularly monitored for adverse effects including nephrotoxicity. Ayumi Ito, Bunei Iizuka, Teppei Omori, Shinichi Nakamura, and Katsutoshi Tokushige Copyright © 2016 Ayumi Ito et al. All rights reserved. Advances in Therapeutic Cholangioscopy Wed, 15 Jun 2016 15:36:25 +0000 http://www.hindawi.com/journals/grp/2016/5249152/ Nowadays, cholangioscopy is an established modality in diagnostic and treatment of pancreaticobiliary diseases. The more widespread use and the recent development of new technologies and accessories had renewed the interest of endoscopic visualization of the biliary tract, increasing the range of indications and therapeutic procedures, such as diagnostic of indeterminate biliary strictures, lithotripsy of difficult bile duct stones, ablative techniques for intraductal malignancies, removal of foreign bodies and gallbladder drainage. These endoscopic interventions will probably be the last frontier in the near future. This paper presents the new advances in therapeutic cholangioscopy, focusing on the current clinical applications and on research areas. Tomazo Antonio Prince Franzini, Renata Nobre Moura, and Eduardo Guimarães Hourneaux de Moura Copyright © 2016 Tomazo Antonio Prince Franzini et al. All rights reserved. Screening Driving Transcription Factors in the Processing of Gastric Cancer Wed, 15 Jun 2016 08:34:25 +0000 http://www.hindawi.com/journals/grp/2016/8431480/ Background. Construction of the transcriptional regulatory network can provide additional clues on the regulatory mechanisms and therapeutic applications in gastric cancer. Methods. Gene expression profiles of gastric cancer were downloaded from GEO database for integrated analysis. All of DEGs were analyzed by GO enrichment and KEGG pathway enrichment. Transcription factors were further identified and then a global transcriptional regulatory network was constructed. Results. By integrated analysis of the six eligible datasets (340 cases and 43 controls), a bunch of 2327 DEGs were identified, including 2100 upregulated and 227 downregulated DEGs. Functional enrichment analysis of DEGs showed that digestion was a significantly enriched GO term for biological process. Moreover, there were two important enriched KEGG pathways: cell cycle and homologous recombination. Furthermore, a total of 70 differentially expressed TFs were identified and the transcriptional regulatory network was constructed, which consisted of 566 TF-target interactions. The top ten TFs regulating most downstream target genes were BRCA1, ARID3A, EHF, SOX10, ZNF263, FOXL1, FEV, GATA3, FOXC1, and FOXD1. Most of them were involved in the carcinogenesis of gastric cancer. Conclusion. The transcriptional regulatory network can help researchers to further clarify the underlying regulatory mechanisms of gastric cancer tumorigenesis. Guangzhong Xu, Kai Li, Nengwei Zhang, Bin Zhu, and Guosheng Feng Copyright © 2016 Guangzhong Xu et al. All rights reserved. A Prebiotic Formula Improves the Gastrointestinal Bacterial Flora in Toddlers Tue, 14 Jun 2016 08:40:28 +0000 http://www.hindawi.com/journals/grp/2016/3504282/ We aimed to investigate the effect of enriched 3-prebiotic formula (including inulin, fructooligosaccharides, and galactooligosaccharides) on toddler gut health by measuring fecal microbiota. Our results revealed that the consumption of 3-prebiotic formula three times per day giving total intake of 1.8 g prebiotic ingredients significantly showed the increased number of probiotic Bifidobacterium spp. colonies and the reduced populations of both C. perfringens and total anaerobic bacteria on the fecal bacterial flora in toddlers at 18~36 months. In addition, total organic acids in the fecal samples significantly increased which improves the utilization of bifidus under acidic conditions after consumption of the 3-prebiotic formula. Therefore, using the formula enriched with prebiotic may maintain gut health in toddlers. Ya-Ling Chen, Fang-Hsuean Liao, Shyh-Hsiang Lin, and Yi-Wen Chien Copyright © 2016 Ya-Ling Chen et al. All rights reserved. Comparison of Inflammatory Response to Transgastric and Transcolonic NOTES Tue, 14 Jun 2016 08:36:28 +0000 http://www.hindawi.com/journals/grp/2016/7320275/ Aims. The aim of our study was to determine the physiologic impact of NOTES and to compare the transgastric and transcolonic approaches. Methods. Thirty pigs were randomized to transgastric, transcolonic, or laparoscopic peritoneoscopy. Blood was drawn and analyzed for C-reactive protein (CRP), tumor necrosis factor-α (TNF-α), interleukin- (IL-) 1β, IL-6, WBCs, and platelets. Results. Endoscopic closure with an OTSC was successful in all 20 animals. The postoperative course was uneventful in all animals. CRP values rose on day 1 in all animals and slowly declined to baseline levels on day 14 with no differences between the groups (, NS). The levels of TNF-α were significantly increased in the transcolonic group (); however this difference was already present prior to the procedure and remained unchanged. No differences were observed in IL1-β and IL-6 values. There was a temporary rise of WBC on day 1 and of platelets on day 7 in all groups (, NS). Conclusions. Transgastric, transcolonic, and laparoscopic peritoneoscopy resulted in similar changes in systemic inflammatory markers. Our findings do not support the assumption that NOTES is less invasive than laparoscopy. Tomas Hucl, Marek Benes, Matej Kocik, Alla Splichalova, Jana Maluskova, Martin Krak, Vera Lanska, Marie Heczkova, Eva Kieslichova, Martin Oliverius, and Julius Spicak Copyright © 2016 Tomas Hucl et al. All rights reserved. Formulation for Effective Screening and Management of Nonalcoholic Steatohepatitis: Noninvasive NAFLD Management Strategy Mon, 13 Jun 2016 07:36:04 +0000 http://www.hindawi.com/journals/grp/2016/6343656/ To establish a versatile means for screening and management of nonalcoholic steatohepatitis (NASH), shear wave velocity was measured in 20 normal controls and 138 consecutive nonalcoholic fatty liver disease (NAFLD) cases. Referencing biochemical properties in 679 healthy volunteers, a formula to distinguish NASH suspects was established and validated in another cohort of 138 histologically proven NAFLD cases. NASH and simple steatosis (SS) suspects were selected based on a plot of shear wave velocity against age. A formula consisting of five factors (γ-glutamyl transpeptidase, alkaline phosphatase, platelet counts, body mass index, and presence/absence of type 2 diabetes mellitus) distinguished NASH suspects from SS suspects with area under the receiver operating characteristic curve values of 86% and 84% in the development and validation cohorts. Among 25 NAFLD cases in which shear wave velocity was repeatedly measured, 8 and 9 cases revealed an increase or decrease, respectively, of shear wave velocity in the entire liver, and the corresponding change in shear wave velocity was primarily observed in the right lobe or the left lateral segment, respectively. These results suggest that the new formula and sequential shear wave velocity measurements at each segment enable high throughput screening of NASH suspects and noninvasive assessment of pathophysiological alleviation/aggravation in cases of NASH. Kanae Hirose, Tsutomu Kanefuji, Takeshi Suda, Souichi Sugitani, Keisuke Nagasaki, Tomoyuki Kubota, Masato Igarashi, and Shuji Terai Copyright © 2016 Kanae Hirose et al. All rights reserved. Small Intestinal Bacterial Overgrowth in Patients with Irritable Bowel Syndrome: Clinical Characteristics, Psychological Factors, and Peripheral Cytokines Thu, 09 Jun 2016 12:15:29 +0000 http://www.hindawi.com/journals/grp/2016/3230859/ Small intestinal bacterial overgrowth (SIBO) has been implicated in the pathogenesis of irritable bowel syndrome (IBS). Psychosocial factors and low-grade colonic mucosal immune activation have been suggested to play important roles in the pathophysiology of IBS. In total, 94 patients with IBS and 13 healthy volunteers underwent a 10 g lactulose hydrogen breath test (HBT) with concurrent scintigraphy. All participants also completed a face-to-face questionnaire survey, including the Hospital Anxiety and Depression Scale, Life Event Stress (LES), and general information. Serum tumour necrosis factor-α, interleukin- (IL-) 6, IL-8, and IL-10 levels were measured. The 89 enrolled patients with IBS and 13 healthy controls had no differences in baseline characteristics. The prevalence of SIBO in patients with IBS was higher than that in healthy controls (39% versus 8%, resp.; ). Patients with IBS had higher anxiety, depression, and LES scores, but anxiety, depression, and LES scores were similar between the SIBO-positive and SIBO-negative groups. Psychological disorders were not associated with SIBO in patients with IBS. The serum IL-10 level was significantly lower in SIBO-positive than SIBO-negative patients with IBS. Hua Chu, Mark Fox, Xia Zheng, Yanyong Deng, Yanqin Long, Zhihui Huang, Lijun Du, Fei Xu, and Ning Dai Copyright © 2016 Hua Chu et al. All rights reserved. Bowel Perforation in Premature Infants with Necrotizing Enterocolitis: Risk Factors and Outcomes Wed, 08 Jun 2016 12:19:40 +0000 http://www.hindawi.com/journals/grp/2016/6134187/ We aim to determine risk factors and clinical outcomes for bowel perforation in premature infants with NEC. We analyzed clinical data of 57 cases of premature infants with NEC at our NICU between January 2010 and December 2012. Based on the presence of bowel perforation, we divided these infants into two groups: perforated NEC group () and nonperforated NEC group (). We compared general information, clinical characteristics, and laboratory findings between groups. The perforated NEC group, compared to the nonperforated NEC group, had significantly lesser gestational age, lower birth weight, higher prevalence of apnea, mechanical ventilation, sepsis and shock, lower blood pH, higher levels of blood glucose, abnormal WBC count and thrombocytopenia, and elevated CRP (all ). Moreover, the perforated NEC group had significantly longer durations of fasting and TPN usage, higher incidences of EUGR and cholestasis, longer duration of antibiotics, higher frequency of advanced antibiotics use, and poorer prognosis than the nonperforated NEC group (all ). Bowel perforation in premature infants with NEC was associated with multiple risk factors. Early identification of some of these risk factors in premature infants with NEC may help implement early intervention to reduce the incidence of bowel perforation and thereby improve the prognosis. Lingling Yu, Jianmei Tian, Xingli Zhao, Ping Cheng, Xiaoqian Chen, Yun Yu, Xiaochun Ding, Xueping Zhu, and Zhihui Xiao Copyright © 2016 Lingling Yu et al. All rights reserved. Pigtail Catheter: A Less Invasive Option for Pleural Drainage in Egyptian Patients with Recurrent Hepatic Hydrothorax Thu, 02 Jun 2016 16:11:57 +0000 http://www.hindawi.com/journals/grp/2016/4013052/ Background and Aims. Treatment of hepatic hydrothorax is a clinical challenge. Chest tube insertion for hepatic hydrothorax is associated with high complication rates. We assessed the use of pigtail catheter as a safe and practical method for treatment of recurrent hepatic hydrothorax as it had not been assessed before in a large series of patients. Methods. This study was conducted on 60 patients admitted to Tanta University Hospital, Egypt, suffering from recurrent hepatic hydrothorax. The site of pigtail catheter insertion was determined by ultrasound guidance under complete aseptic measures and proper local anesthesia. Insertion was done by pushing the trocar and catheter until reaching the pleural cavity and then the trocar was withdrawn gradually while inserting the catheter which was then connected to a collecting bag via a triple way valve. Results. The use of pigtail catheter was successful in pleural drainage in 48 (80%) patients with hepatic hydrothorax. Complications were few and included pain at the site of insertion in 12 (20%) patients, blockage of the catheter in only 2 (3.3%) patients, and rapid reaccumulation of fluid in 12 (20%) patients. Pleurodesis was performed on 38 patients with no recurrence of fluid within three months of observation. Conclusions. Pigtail catheter insertion is a practical method for treatment of recurrent hepatic hydrothorax with a low rate of complications. This trial is registered with ClinicalTrials.gov Identifier: NCT02119169. Mohamed Sharaf-Eldin, Adel Salah Bediwy, Abdelrahman Kobtan, Sherief Abd-Elsalam, Ferial El-Kalla, Loai Mansour, Walaa Elkhalawany, Mohamed Elhendawy, and Samah Soliman Copyright © 2016 Mohamed Sharaf-Eldin et al. All rights reserved. Nasogastric Nutrition versus Nasojejunal Nutrition in Patients with Severe Acute Pancreatitis: A Meta-Analysis of Randomized Controlled Trials Thu, 02 Jun 2016 06:30:29 +0000 http://www.hindawi.com/journals/grp/2016/6430632/ Introduction. Previous studies have shown that the nasogastric (NG) route seems equivalent to the nasojejunal (NJ) route in patients with severe acute pancreatitis (SAP). However, these studies used a small sample size and old criteria for diagnosing SAP, which may include some patients with moderate SAP, according to the newly established SAP criteria (Atlanta 2012 classification). Based on the changes in the criteria for classifying SAP, we performed an up-to-date meta-analysis. Method. We reviewed the PubMed, EMbase, China National Knowledge Infrastructure, Wanfang Database, and Cochrane Central Register of Controlled Trials electronic databases. We included randomized controlled trials comparing NG and NJ nutrition in patients with SAP. We performed the meta-analysis using the Cochrane Collaborations’ RevMan 5.3 software. Results. We included four randomized controlled trials involving 237 patients with SAP. There were no significant differences in the incidence of mortality, infectious complications, digestive complications, achievement of energy balance, or length of hospital stay between the NG and NJ nutrition groups. Conclusions. NG nutrition was as safe and effective as NJ nutrition in patients with SAP. Further studies are needed to confirm our results. Youfeng Zhu, Haiyan Yin, Rui Zhang, Xiaoling Ye, and Jianrui Wei Copyright © 2016 Youfeng Zhu et al. All rights reserved. The Impact of Colonoscopy Quality Control Table on Adenoma Detection Rates Thu, 02 Jun 2016 06:18:30 +0000 http://www.hindawi.com/journals/grp/2016/2548109/ Objective. This study aims to investigate the effects of reporting colonoscopy findings and the regular review of outcomes on adenoma detection rates. Methods. Patients who underwent colonoscopy from August 2013 to February 2014 were selected as the intervention group. The preintervention group included patients who underwent colonoscopy from January 2013 to July 2013, in which the procedure sheet for this group of patients was not accomplished. The primary outcome was adenoma detection rate (ADR), and secondary outcomes included the success rate of intubation and withdrawal time. Results. This study included 2,467 cases: 1,302 cases in the intervention group and 1,165 cases in the preintervention group. There was no significant difference in demographic characteristics between the two groups. In the intervention group, withdrawal time of colonoscopy was longer (), and the success rate of intubation (92.5% versus 89.1%, ) and detection rate of polyps (32.6% versus 27.6%, ) and adenomas (20.0% versus 16.1%, ) were higher. Significantly high detection rates for proximal adenomas, flat adenomas, and adenomas with a diameter <5 mm were observed in the intervention group (all ). Conclusion. The reporting and review of procedure details help to improve quality indicators of colonoscopy. Bin Deng, Jiehua Zhi, Yaosheng Chen, Lanyu Liang, Jian Wu, Xuefen Gao, Weiming Xiao, and Yanbing Ding Copyright © 2016 Bin Deng et al. All rights reserved. Ex Vivo Apoptosis in CD8+ Lymphocytes Predicts Rectal Cancer Patient Outcome Wed, 01 Jun 2016 06:56:40 +0000 http://www.hindawi.com/journals/grp/2016/5076542/ Background. Apoptotic rates in peripheral blood lymphocytes can predict radiation induced normal tissue toxicity. We studied whether apoptosis in lymphocytes has a prognostic value for therapy outcome. Methods. Lymphocytes of 87 rectal cancer patients were ex vivo irradiated with 2 Gy, 8 Gy, or a combination of 2 Gy ionizing radiation and Oxaliplatin. Cells were stained with Annexin V and 7-Aminoactinomycin D and apoptotic and necrotic rates were analyzed by multicolor flow cytometry. Results. After treatment, apoptotic and necrotic rates in CD8+ cells are consistently higher than in CD4+ cells, with lower corresponding necrotic rates. Apoptotic and necrotic rates of CD4+ cells and CD8+ cells correlated well within the 2 Gy, 8 Gy, and 2 Gy and Oxaliplatin arrangements (). High apoptotic CD8+ rates after 2 Gy, 8 Gy, and 2 Gy + Oxaliplatin treatment were prognostically favorable for metastasis-free survival (, and ) and disease-free survival (, , and ). Conclusions. Ex vivo CD8+ apoptotic rates are able to predict the patient outcome in regard to metastasis-free or disease-free survival. Patients with higher CD8+ apoptotic rates in the peripheral blood have a more favorable prognosis. In addition to the prediction of late-toxicity by utilization of CD4+ apoptotic rates, the therapy outcome can be predicted by CD8+ apoptotic rates. Sebastian Winkler, Philipp Hoppe, Marlen Haderlein, Markus Hecht, Rainer Fietkau, and Luitpold V. Distel Copyright © 2016 Sebastian Winkler et al. All rights reserved. Endoscopic Ultrasound-Guided Drainage without Fluoroscopic Guidance for Extraluminal Complicated Cysts Mon, 30 May 2016 12:56:48 +0000 http://www.hindawi.com/journals/grp/2016/1249064/ Background. Endoscopic ultrasound- (EUS-) guided drainage is generally performed under fluoroscopic guidance. However, improvements in endoscopic and EUS techniques and experience have led to questions regarding the usefulness of fluoroscopy. This study aimed to retrospectively evaluate the safety and efficacy of EUS-guided drainage of extraluminal complicated cysts without fluoroscopic guidance. Methods. Patients who had undergone nonfluoroscopic EUS-guided drainage of extraluminal complicated cysts were enrolled. Drainage was performed via a transgastric, transduodenal, or transrectal approach. Single or double 7 Fr double pigtail stents were inserted. Results. Seventeen procedures were performed in 15 patients in peripancreatic fluid collections () and pelvic abscesses (). The median lesion size was 7.1 cm (range: 2.8–13.0 cm), and the mean time spent per procedure was minutes (range: 16–50 minutes). Endoscopic drainage was successful in 16 of 17 (94.1%) procedures. There were no complications. All patients experienced symptomatic improvement and revealed partial to complete resolution according to follow-up computed tomography findings. Two patients developed recurrent cysts that were drained during repeat procedures, with eventual complete resolution. Conclusion. EUS-guided drainage without fluoroscopic guidance is a technically feasible, safe, and effective procedure for the treatment of extraluminal complicated cysts. Hyeong Seok Nam, Hyung Wook Kim, Dae Hwan Kang, Cheol Woong Choi, Su Bum Park, Su Jin Kim, Dae Gon Ryu, and Joon Ho Jeon Copyright © 2016 Hyeong Seok Nam et al. All rights reserved. Recipient Hyperbilirubinemia May Reduce Ischemia-Reperfusion Injury but Fails to Improve Outcome in Clinical Liver Transplantation Sun, 22 May 2016 09:39:35 +0000 http://www.hindawi.com/journals/grp/2016/6964856/ Background. Exogenous bilirubin may reduce experimental ischemia-reperfusion injury (IRI) due to its antioxidant properties. We studied if early graft exposure to high bilirubin levels in the recipient affects the early IRI and outcomes after liver transplantation (LTx). Methods. In 427 LTx patients, the AUROC curve based on bilirubin and AST at day 1 identified a cutoff of 2.04 mg/dL for the recipient pretransplant bilirubin. Recipients were grouped as having low (group L, ) or high (group H, ) bilirubin. Both groups had similar donor-related variables (age, preservation time, donor BMI > 28, and donor risk index (DRI)). Results. Alanine (ALT) and aspartate (AST) aminotransferase levels were higher in group L at day 1; ALT levels remained higher at day 2 in group L. LTx from high risk donors (DRI > 2) revealed a trend towards lower transaminases during the first two days after transplantation in group H. One month and 1-year patient survival were similar in groups L and H. High preoperative bilirubin did not affect the risk for early graft dysfunction (EGD), death, or graft loss during the first year after transplantation nor the incidence of acute rejection. LTx using donors with DRI > 2 resulted in similar rates of EGD in both groups. Conclusion. Increased bilirubin appears to reduce the early IRI after LTx yet this improvement was insufficient to improve the clinical outcome. Mihai Oltean, Christian Barrenäs, Paulo Ney Martins, Gustaf Herlenius, Bengt Gustafsson, Styrbjörn Friman, and William Bennet Copyright © 2016 Mihai Oltean et al. All rights reserved. Worldwide Incidence of Colorectal Cancer, Leukemia, and Lymphoma in Inflammatory Bowel Disease: An Updated Systematic Review and Meta-Analysis Mon, 16 May 2016 14:07:22 +0000 http://www.hindawi.com/journals/grp/2016/1632439/ Background/Aims. Inflammatory bowel disease (IBD) is associated with an increased risk of colorectal cancer (CRC). In addition, there may be an association between leukemia and lymphoma and IBD. We conducted a systematic review and meta-analysis of the IBD literature to estimate the incidence of CRC, leukemia, and lymphoma in adult IBD patients. Methods. Studies were identified by a literature search of PubMed, Cochrane Library, Medline, Web of Science, Scopus, EMBASE, and ProQuest Dissertations and Theses. Pooled incidence rates (per 100,000 person-years [py]) were calculated through use of a random effects model, unless substantial heterogeneity prevented pooling of estimates. Several stratified analyses and metaregression were performed to explore potential study heterogeneity and bias. Results. Thirty-six articles fulfilled the inclusion criteria. For CRC, the pooled incidence rate in CD was 53.3/100,000 py (95% CI 46.3–60.3/100,000). The incidence of leukemia was 1.5/100,000 py (95% CI −0.06–3.0/100,000) in IBD, 0.3/100,000 py (95% CI −1.0–1.6/100,000) in CD, and 13.0/100,000 py (95% CI 5.8–20.3/100,000) in UC. For lymphoma, the pooled incidence rate in CD was 0.8/100,000 py (95% CI −0.4–2.1/100,000). Substantial heterogeneity prevented the pooling of other incidence estimates. Conclusion. The incidence of CRC, leukemia, and lymphoma in IBD is low. Chelle L. Wheat, Kindra Clark-Snustad, Beth Devine, David Grembowski, Timothy A. Thornton, and Cynthia W. Ko Copyright © 2016 Chelle L. Wheat et al. All rights reserved. Short-Term Biliary Stent Placement Contributing Common Bile Duct Stone Disappearance with Preservation of Duodenal Papilla Function Tue, 10 May 2016 16:20:21 +0000 http://www.hindawi.com/journals/grp/2016/6153893/ Aims. To investigate the effect of biliary stent placement without endoscopic sphincterotomy (EST) on common bile duct stones (CBDS) disappearance and the contribution of preserving the duodenal papilla function to reduce recurrence of CBDS. Methods. Sixty-six patients admitted for acute obstructive cholangitis due to CBDS who underwent biliary stent placement without EST for 2 years from March 2011 were evaluated retrospectively. The second endoscopic retrograde cholangiopancreatography (ERCP) was performed for treatment of CBDS 3 to 4 months after the first ERCP. We estimated the rate of stone disappearance at the time of second ERCP. Results. CBDS disappearance was observed in 32 (48.5%) of 66 patients. The diameter of the bile ducts and the diameter of CBDS in patients with CBDS disappearance were significantly smaller than in those with CBDS requiring extraction ( and , resp.). Stone disappearance was evident when the diameter of bile ducts and that of CBDS were <10 and 7 mm, respectively (). Conclusions. Short-term stent placement without EST eliminates CBDS while preserving duodenal papilla function and may be suitable for treating CBDS in patients with nondilated bile ducts and small CBDS. Tatsuki Ueda, Masataka Kikuyama, Yuzo Kodama, and Takafumi Kurokami Copyright © 2016 Tatsuki Ueda et al. All rights reserved. Novel Mutations in MLH1 and MSH2 Genes in Mexican Patients with Lynch Syndrome Tue, 10 May 2016 10:58:49 +0000 http://www.hindawi.com/journals/grp/2016/5278024/ Background. Lynch Syndrome (LS) is characterized by germline mutations in the DNA mismatch repair (MMR) genes MLH1, MSH2, MSH6, and PMS2. This syndrome is inherited in an autosomal dominant pattern and is characterized by early onset colorectal cancer (CRC) and extracolonic tumors. The aim of this study was to identify mutations in MMR genes in three Mexican patients with LS. Methods. Immunohistochemical analysis was performed as a prescreening method to identify absent protein expression. PCR, Denaturing High Performance Liquid Chromatography (dHPLC), and Sanger sequencing complemented the analysis. Results. Two samples showed the absence of nuclear staining for MLH1 and one sample showed loss of nuclear staining for MSH2. The mutations found in MLH1 gene were c.2103+1G>C in intron 18 and compound heterozygous mutants c.1852_1854delAAG (p.K618del) and c.1852_1853delinsGC (p.K618A) in exon 16. In the MSH2 gene, we identified mutation c.638dupT (p.L213fs) in exon 3. Conclusions. This is the first report of mutations in MMR genes in Mexican patients with LS and these appear to be novel. Jose Miguel Moreno-Ortiz, María de la Luz Ayala-Madrigal, Jorge Román Corona-Rivera, Manuel Centeno-Flores, Víctor Maciel-Gutiérrez, Ramón Antonio Franco-Topete, Juan Armendáriz-Borunda, Erin Hotchkiss, Lucia Pérez-Carbonell, Jennifer Rhees, Clement Richard Boland, and Melva Gutiérrez-Angulo Copyright © 2016 Jose Miguel Moreno-Ortiz et al. All rights reserved. Gut Microbiota and Metagenomic Advancement in Digestive Disease Tue, 10 May 2016 08:19:07 +0000 http://www.hindawi.com/journals/grp/2016/4703406/ Jinsheng Yu, Sharon Marsh, Junbo Hu, Wenke Feng, and Chaodong Wu Copyright © 2016 Jinsheng Yu et al. All rights reserved. The Pathogenesis of Nonalcoholic Fatty Liver Disease: Interplay between Diet, Gut Microbiota, and Genetic Background Mon, 09 May 2016 12:13:55 +0000 http://www.hindawi.com/journals/grp/2016/2862173/ Nonalcoholic fatty liver disease (NAFLD) is the most common chronic liver disease in the world, and it comprises a spectrum of hepatic abnormalities from simple hepatic steatosis to steatohepatitis, fibrosis, cirrhosis, and liver cancer. While the pathogenesis of NAFLD remains incompletely understood, a multihit model has been proposed that accommodates causal factors from a variety of sources, including intestinal and adipose proinflammatory stimuli acting on the liver simultaneously. Prior cellular and molecular studies of patient and animal models have characterized several common pathogenic mechanisms of NAFLD, including proinflammation cytokines, lipotoxicity, oxidative stress, and endoplasmic reticulum stress. In recent years, gut microbiota has gained much attention, and dysbiosis is recognized as a crucial factor in NAFLD. Moreover, several genetic variants have been identified through genome-wide association studies, particularly rs738409 (Ile748Met) in PNPLA3 and rs58542926 (Glu167Lys) in TM6SF2, which are critical risk alleles of the disease. Although a high-fat diet and inactive lifestyles are typical risk factors for NAFLD, the interplay between diet, gut microbiota, and genetic background is believed to be more important in the development and progression of NAFLD. This review summarizes the common pathogenic mechanisms, the gut microbiota relevant mechanisms, and the major genetic variants leading to NAFLD and its progression. Jinsheng Yu, Sharon Marsh, Junbo Hu, Wenke Feng, and Chaodong Wu Copyright © 2016 Jinsheng Yu et al. All rights reserved. Multicenter Study of Antibiotic Resistance Profile of H. pylori and Distribution of CYP2C19 Gene Polymorphism in Rural Population of Chongqing, China Mon, 09 May 2016 09:54:15 +0000 http://www.hindawi.com/journals/grp/2016/8547686/ This study was to investigate the antibiotic resistance profile of H. pylori and the distribution of CYP2C19 gene polymorphism in rural population of Chongqing, China. 214 and 111 strains of H. pylori were isolated from rural and urban patients, respectively. 99.53%, 20.09%, and 23.36% of the isolates in rural patients were found to be resistant to metronidazole, clarithromycin, and levofloxacin, while the resistant rate in urban patients was 82.88%, 19.82%, and 24.32%. The multiple antibiotic resistance percentage significantly increased from 28.26% (below 45 years) to 41.80% (above 45 years) in rural patients. Up to 44.39%, 45.79%, and 9.81% of rural patients from whom H. pylori was isolated were found to be extensive metabolizers, intermediate metabolizers, and poor metabolizers. No correlation was observed between antibiotic resistance profile of H. pylori and genetic polymorphism of CYP2C19 among rural population. There was a high prevalence of H. pylori strains resistant to metronidazole, clarithromycin, and levofloxacin in rural patients in Chongqing, China. The choice of therapy in this area should be based on local susceptibility patterns. Amoxicillin, gentamicin, and furazolidone are recommended as the first-line empiric regimen. Ran Han, Hong Lu, Ming-Wan Jiang, Ke-Wen Tan, Zhong Peng, Jia-Li Hu, Dian-Chun Fang, Chun-Hui Lan, and Xiao-Ling Wu Copyright © 2016 Ran Han et al. All rights reserved. Risk of Dumping Syndrome after Sleeve Gastrectomy and Roux-en-Y Gastric Bypass: Early Results of a Multicentre Prospective Study Sun, 08 May 2016 12:04:08 +0000 http://www.hindawi.com/journals/grp/2016/2570237/ Background. Bariatric surgery is an important field of surgery. An important complication of bariatric surgery is dumping syndrome (DS). Aims. To evaluate the incidence of DS in patients undergoing bariatric surgery. Methods. 541 patients included from 5 nutrition and bariatric centers in France underwent either LSG or LRYGB. They were evaluated at 1 month (M1) and 6 months (M6) postoperatively by an interview and completion of a dumping syndrome questionnaire. Results. 268 patients underwent LSG (Group A) and 273 underwent LRYGB. From the LRYGB patients 229 had mechanical gastrojejunoanal anastomosis with 30 mm linear stapler (Group B) and 44 had manual (hand sewn) 15 mm gastrojejunal anastomosis (Group C). Overall incidence of DS was 8.5% at M1 and M6. In LSG group (Group A), only 4 patients (1.49%) reported episodes of DS at M1 and 3 (1.12%) at M6. In Group B, 41 patients (17.90%) reported episodes of DS at M1 and 43 (18.78%) at M6. Group C experienced one case (2.27%) of DS at M1 and none (0%) at M6. Conclusions. Patients undergoing LRYGB, especially with larger gastrojejunal anastomosis, are more prone to developing DS following surgery than patients undergoing LSG or LRYGB with calibrated manual anastomosis. M. Ramadan, M. Loureiro, K. Laughlan, R. Caiazzo, A. Iannelli, L. Brunaud, S. Czernichow, M. Nedelcu, and D. Nocca Copyright © 2016 M. Ramadan et al. All rights reserved. Simple, Safe, and Cost-Effective Technique for Resected Stomach Extraction in Laparoscopic Sleeve Gastrectomy Thu, 05 May 2016 16:27:12 +0000 http://www.hindawi.com/journals/grp/2016/7090128/ Background. Laparoscopic sleeve gastrectomy (LSG) has become a popular operation during the recent years. This procedure requires resection of 80–90% of the stomach. Extraction of gastric specimen is known to be a challenging and costly stage of the operation. In this paper, we report results of a simple and cost-effective specimen extraction technique which was applied to 137 consecutive LSG patients. Methods. Between October 2013 and October 2015, 137 laparoscopic sleeve gastrectomy surgeries were performed at Dokuz Eylul University General Surgery Department, Upper Gastrointestinal Surgery Unit. All specimens were extracted through a 15 mm trocar site without using any special device. Results. We noticed one superficial incisional surgical site infection and treated this patient with oral antibiotics. No cases of trocar site hernia were observed. Conclusion. Different techniques have been described for specimen extraction. This simple technique allows extraction of specimen safely in a short time and does not require any special device. Serhan Derici, Koray Atila, Seymen Bora, and Serkan Yener Copyright © 2016 Serhan Derici et al. All rights reserved. Annexin A2 Coordinates STAT3 to Regulate the Invasion and Migration of Colorectal Cancer Cells In Vitro Wed, 04 May 2016 12:57:57 +0000 http://www.hindawi.com/journals/grp/2016/3521453/ The present study aimed to reveal the expression of STAT3 and Anxa 2 in CRC specimens and to investigate the effects of STAT3 and Anxa 2 signaling on the proliferation, invasion, and migration in CRC Caco-2 cells. Results demonstrated that both Anxa 2 and STAT3 were highly expressed in CRC specimens in both mRNA and protein levels, with or without phosphorylation (Tyrosine 23 in Anxa 2 and Tyrosine 705 in STAT3). And the upregulated Anxa 2 promoted the phosphorylation of STAT3 (Tyrosine 705) in CRC Caco-2 cells. The upregulated Anxa 2 promoted the proliferation, migration, and invasion of Caco-2 cells in vitro. Moreover, the STAT3 knockdown also repressed the proliferation, migration, and invasion of Caco-2 cells. In conclusion, the overexpressed Annexin A2 regulated the proliferation, invasion, and migration in CRC cells in an association with STAT3. Dianhui Xiu, Lin Liu, Fengli Qiao, Haishan Yang, Lu Cui, and Guifeng Liu Copyright © 2016 Dianhui Xiu et al. All rights reserved. Vaccinating Adult Patients with Cirrhosis: Trends over a Decade in the United States Sat, 30 Apr 2016 07:57:54 +0000 http://www.hindawi.com/journals/grp/2016/5795712/ Introduction. The progression of chronic liver disease to cirrhosis involves both innate and adaptive immune system dysfunction resulting in increased risk of infectious complications. Vaccinations against pneumococcus, hepatitis A virus (HAV), and hepatitis B virus (HBV) are well tolerated and effective in disease prevention and reduction in morbidity and mortality. Prior studies assessing vaccination rates in patients with cirrhosis have specific limitations and to date no study has provided a comprehensive evaluation of vaccination rates in patients with cirrhosis in the United States. Aim. This study assessed vaccination rates for pneumococcus, HAV, and HBV in patients with cirrhosis. Results. Overall 59.7% of patients with cirrhosis received at least 1 vaccination during the study period. Vaccination rates within the same or following year of cirrhosis diagnosis were 19.9%, 7.7%, and 11.0% against pneumococcus, HAV, and HBV, respectively. Trend analysis revealed significant increases in vaccination rates for pneumococcus in all patients with cirrhosis and within subgroups based on age, gender, and presence of concomitant diabetes. Conclusion. The study demonstrated that vaccination rates in patients with cirrhosis remain suboptimal. Ultimately, the use of electronic medical record (EMR) reminders improved communication between healthcare professionals and public health programs to increase awareness are fundamental to reducing morbidity, mortality, and health-care related costs of vaccine preventable diseases in patients with cirrhosis. Abhijeet Waghray, Nisheet Waghray, Hicham Khallafi, and K. V. Narayanan Menon Copyright © 2016 Abhijeet Waghray et al. All rights reserved. Dyspepsia: When and How to Test for Helicobacter pylori Infection Thu, 28 Apr 2016 17:13:47 +0000 http://www.hindawi.com/journals/grp/2016/8463614/ Dyspepsia is defined as symptoms related to the upper gastrointestinal tract. Approximately 25% of western populations complain of dyspeptic symptoms each year. 70% of them do not have an organic cause and symptoms are related to the so-called functional dyspepsia, characterized by epigastric pain, early satiety, and/or fullness during or after a meal occurring at least weekly and for at least 6 months according to ROME III criteria. In order to avoid invasive procedures and adverse effects, to minimize costs, to speed up diagnosis, and to provide the most appropriate treatments, primary care physicians need to recognize functional dyspepsia. Because symptoms do not reliably discriminate between organic and functional forms of the disease, anamnesis, family history of peptic ulcer and/or of gastric cancer, medication history, especially for nonsteroidal anti-inflammatory drugs, age, and physical examination could help the physician in discerning between functional dyspepsia and organic causes. For patients without alarm symptoms, noninvasive testing for H. pylori, with either carbon-13-labeled urea breath testing or stool antigen testing, is recommended as a first-line strategy. In this review, we provide recommendations to guide primary care physicians for appropriate use of diagnostic tests and for H. pylori management in dyspeptic patients. Maria Pina Dore, Giovanni Mario Pes, Gabrio Bassotti, and Paolo Usai-Satta Copyright © 2016 Maria Pina Dore et al. All rights reserved. Factor Analysis Influencing Postoperative Hospital Stay and Medical Costs for Patients with Definite, Suspected, or Unmatched Diagnosis of Acute Cholecystitis according to the Tokyo Guidelines 2013 Thu, 28 Apr 2016 09:52:16 +0000 http://www.hindawi.com/journals/grp/2016/7675953/ Purpose. To identify significant independent preoperative factors influencing postoperative hospital stay (PHS) and medical costs (MC) in 171 patients who underwent cholecystectomy for benign gallbladder diseases and had definite, suspected, or unmatched acute cholecystitis (AC) diagnosis according to the Tokyo Guidelines 2013 (TG13). Methods. The 171 patients were classified according to the combination of diagnostic criteria including local signs of inflammation (A), systemic signs of inflammation (B), and imaging findings (C): A+ B+ C (definite diagnosis, ), A+ B (suspected diagnosis, ), (A or B) + C (), A (), and B (). Results. The A+ B + C and (A or B) + C groups had equivalent PHS and MC, suggesting that imaging findings were essential for AC diagnosis. PHS and MC were significantly increased in the order of severity grades based on TG13. Performance status (PS), white blood cell count, and severity grade were identified as preoperative factors influencing PHS by multivariate analysis, and significant independent preoperative factors influencing MC were age, PS, preoperative biliary drainage, hospital stay before surgery, albumin, and severity grade. Conclusion. PS and severity grade significantly influenced prolonged PHS and increased MC. Aoi Hayasaki, Koji Takahashi, Takehiro Fujii, Koji Kumamoto, Koji Fujii, Eiichi Matsumoto, Shigeki Miyahara, Tsukasa Kusuta, Yoshinori Azumi, and Shuji Isaji Copyright © 2016 Aoi Hayasaki et al. All rights reserved.