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| 1 | H pylori infection causes chronic pancreatitis in Mongolian gerbils显示文摘AIM: To investigate whether chronic H pylori infection has the potential to induce pancreatitis in the Mongolian gerbil model, and whether it is dependent on an intact type Ⅳ secretion system. METHODS: Mongolian gerbils were infected with wild type (WT) H pylori typeⅠstrain B128 or its isogenic mutant B128 ?cagY (defective type Ⅳ secretion). After seven months of infection, H pylori was reisolated from antrum and corpus and H pylori DNA was analyzed by semi- nested polymerase chain reaction (PCR). Inflammation and histological changes were documented in the gastric antrum, corpus, and pancreas by immunohistochemistry. Cytokine mRNA, gastric pH, plasma gastrin, amylase, lipase, and glucose levels were determined. RESULTS: The H pylori infection rate was 95%. Eight infected animals, but none of the uninfected group, developed transmural inflammation and chronic pancreatitis. Extensive interstitial fibrosis and inflammation of the pancreatic lobe adjacent to the antrum was confirmed by trichrome stain, and immuno- histochemically. Pro-inflammatory cytokine mRNA was significantly increased in the antral mucosa of all infected gerbils. In the corpus, only cytokine levels of WT-infected animals and those developing transmural inflammation and pancreatitis were significantly increased. Levels of lipase, but not glucose or amylase levels, were significantly reduced in the pancreatitis group. H pylori DNA was detected in infected antral and corpus tissue,but not in the pancreas. CONCLUSION: H pylori infection is able to induce chronic pancreatitis in Mongolian gerbils independently of the type Ⅳ secretion system, probably by an indirect mechanism associated with a penetrating ulcer. | Gabriele Rieder Arno Karnholz Mechthild Stoeckelhuber Juanita L Merchant Rainer Haas | 2007 | World Journal of Gastroenterology2007，13，29： | 10 |
| 2 | Low skeletal muscle mass is associated with non-alcoholic fatty liver disease in Korean adults: the Fifth Korea National Health and Nutrition Examination Survey显示文摘BACKGROUND: Sarcopenia and non-alcoholic fatty liver disease(NAFLD) share similar pathophysiological mechanisms, and the relationship between sarcopenia and NAFLD has been recently investigated. The study investigated whether low skeletal muscle mass is differentially associated with NAFLD by gender in Korean adults.METHODS: We conducted a cross-sectional analysis of the data from the Fifth Korea National Health and Nutrition Examination Survey. The skeletal muscle index(SMI) was obtained by the appendicular skeletal muscle mass divided by the weight. NAFLD was defined as a fatty liver index(FLI) ≥60 in the absence of other chronic liver disease.RESULTS: Among the included subjects, 18.3%(SE: 1.4%) in men and 7.0%(SE: 0.7%) in women were classified as having FLI-defined NAFLD. Most of the risk factors for FLI-defined NAFLD showed a significant negative correlation with the SMI in both genders. Multiple logistic regression analysis showed that low SMI was associated with FLI-defined NAFLD, independent of other metabolic and lifestyle parameters in both genders [males: odds ratio(OR)=1.35; 95% confidence interval(CI): 1.17-1.54; females: OR=1.36; 95% CI: 1.18-1.55]. The magnitude of the association between FLI-defined NAFLD and low SMI was higher in middle aged to elderly males(OR=1.50; 95% CI: 1.22-1.84) than in males less than 45 years of age(OR=1.25; 95% CI: 1.02-1.52) and in premenopausal females(OR=1.50; 95% CI: 1.12-2.03) than in postmenopausal females(OR=1.36; 95% CI: 1.20-1.54).CONCLUSIONS: Low SMI is associated with the risk of FLIdefined NAFLD independent of other well-known metabolic risk factors in both genders. This association may differ according to age group or menopausal status. Further studies are warranted to confirm this relationship. | hee yeon kim chang wook kim chung-hwa park jong young choi kyungdo han anwar t merchant yong-moon park | 2016 | Hepatobiliary & Pancreatic Diseases International2016，15，1： | 7 |
| 3 | Lymph node ratio and preoperative CA 19-9 levels predict overall survival and recurrence-free survival in patients with resected pancreatic adenocarcinoma显示文摘AIM:Clinicopathologic factors predicting overall survival (OS) would help identify a subset to benefit from adjuvant therapy. METHODS: One hundred and sixty-nine patients patients from 1984 to 2009 with curative resections for pancreatic adenocarcinoma were included. Tumors were staged by American Joint Committee on Cancer 7th edition criteria. Univariate and multivariable analyses were performed using Kaplan-Meier methodology or Cox proportional hazard models. Log-rank tests were performed. Statistical inferences were assessed by two-sided 5% significance level. RESULTS: Median age was 67.1 (57.2-73.0) years with equal gender distribution. Tumors were in the head (89.3%) or body/tail (10.7%). On univariate analysis, adjuvant therapy, lymph node (LN) ratio, histologic grade, negative margin status, absence of peripancreatic extension, and T stage were associated with improved OS. Adjuvant therapy, LN ratio, histologic grade, number of nodes examined, negative LN status, and absence of peripancreatic extension were associated with improved recurrence-free survival (RFS). On multivariable analysis, LN ratio and carbohydrate antigen (CA) 19-9 levels were associated with OS. LN ratio was associated with RFS. CONCLUSION: The LN ratio and CA 19-9 levels are independent prognostic factors following curative resections of pancreatic cancer. | Sabrina C Wentz Zhi-Guo Zhao Yu Shyr Chan-Juan Shi Kay Washington Nipun B Merchant Fen Xia A Bapsi Chakravarthy | 2012 | World Journal of Gastrointestinal Oncology2012，4，10： | 3 |
| 4 | Immunohistochemical analysis of the Wnt/β-catenin signaling pathway in pancreatic neuroendocrine neoplasms显示文摘AIM: To investigate the role of the Wnt/β-catenin pathway in pancreatic neuroendocrine neoplasms(PanN ENs). METHODS: Tissue microarrays containing 88 PanN ENs were immunohistochemically labeled with antibodies to β-catenin, E-cadherin, adenomatous polyposis coli(APC), chromogranin and synaptophysin. One case had only metastatic tumors resected, whereas others(n = 87) received pancreatectomy with or without partial hepatectomy. Pathology slides, demographic, clinicopathologic, and follow up data were reviewed. Patients' demographics, clinicopathologic features, and immunohistochemical results from 87 primary tumors were compared between patients with low stage(stage Ⅰ/Ⅱ) and high stage(stage Ⅲ/Ⅳ) tumors. In addition, correlation of immunohistochemical results from primary tumors with disease-specific survival(DSS) was evaluated. RESULTS: Strong membranous β-catenin staining in the primary tumor was observed in all 13 stage Ⅲ/Ⅳ Pan NENs as compared to 47%(35/74) of stage Ⅰ/Ⅱtumors(P < 0.01). However, the strong membranous β-catenin staining was unassociated with tumor grade or DSS. Decreased membranous β-catenin staining was associated with decreased membranous E-cadherin labeling. Nuclear β-catenin staining was seen in 15%(2/13) of stage Ⅲ/Ⅳ Pan NENs as compared to 0%(0/74) of stage Ⅰ/Ⅱ tumors(P = 0.02). The case with metastasectomy only also showed nuclear β-catenin staining. Two of the three cases with nuclear β-catenin staining were familial adenomatous polyposis(FAP) patients. Lack of APC expression was seen in 70%(57/81) of the cases, including the 3 cases with nuclear β-catenin staining. Expression of E-cadherin and APC in primary tumor was not correlated with tumor grade, tumor stage, or disease specific survival. CONCLUSION: The Wnt/β-catenin pathway was altered in some PanN ENs, but did not Impact DSS. PanN ENs in FAP patients demonstrated nuclear β-catenin accumulation and loss of APC. | Vivian Weiss Julie Dueber Jesse P Wright Justin Cates Frank Revetta Alexander A Parikh Nipun B Merchant Chanjuan Shi | 2016 | World Journal of Gastrointestinal Oncology2016，8，8： | 3 |
| 5 | Emerging targets in pancreatic cancer: epithelial–mesenchymal transition and cancer stem cells显示文摘 | Nagaraj Nagathihalli Merchant Jason Castellanos | 2013 | OncoTargets and Therapy (default)2013，，： | 3 |
| 6 | Safety and Efficacy of Low Anterior Resection for Rectal Cancer: 681 Consecutive Cases From a Specialty Service显示文摘 | Warren E. Enker Nipun Merchant Alfred M. Cohen Nicole M. Lanouette Carol Swallow Jose Guillem Philip Paty Bruce Minsky Katherine Weyrauch Stuart H. Q. Quan | 1999 | Annals of Surgery1999，，4： | 3 |
| 7 | A Multicenter Analysis of Distal Pancreatectomy for Adenocarcinoma: Is Laparoscopic Resection Appropriate?显示文摘 | David A. Kooby William G. Hawkins C. Max Schmidt Sharon M. Weber David J. Bentrem Theresa W. Gillespie Johnita Byrd Sellers Nipun B. Merchant Charles R. Scoggins Robert C.G. Martin Hong Jin Kim Syed Ahmad Clifford S. Cho Alexander A. Parikh Carrie K. Chu | 2010 | Journal of the American College of Surgeons2010，，5： | 2 |
| 8 | A model and algorithms for dynamic traffic assignment problem 显示文摘 | Merchant D K Nemhauser G L | 1978 | Transpn Sci1978，12，： | 2 |
| 9 | Introduction of new techniques and technologies in surgery: Where is transanal total mesorectal excision today?显示文摘The introduction of new surgical techniques and technologies has traditionally been unregulated.In many settings surgeons frequently adopt novel procedures without following a structured program of implementation or supervision.The appearance of innovative technology played a pivotal role in the advancement of new surgical techniques during the industrial revolution.Innovation has been an essential component of surgical development,which led to contemporary surgical techniques such as minimally invasive surgery.Different initiatives have been developed to guide the safe introduction of new surgical techniques and other procedures.Those include comprehensive concepts such as the Idea,Development,Exploration,Assessment,Long-term study framework,which could be particularly relevant when reflecting on the novel transanal total mesorectal excision(taTME),introduced a decade ago.This relatively novel and complex procedure promised to overcome some of the major limitations of traditional surgical approaches for rectal cancer.According to the Idea,Development,Exploration,Assessment,Long-term study framework,taTME is in the phase of exploration,where there is an existing and increasing number of reports being published as the experience grows.The current management of rectal cancer is in a state of radical evolution,with multiple options that were not previously available.Ta TME is only one technique amongst many which could be part of a rectal cancer surgeon’s armamentarium;however,it requires further rigorous study and evaluation. | Antonio Caycedo-Marulanda Sunil Patel Shaila Merchant Carl Brown | 2020 | World Journal of Gastrointestinal Surgery2020，12，5： | 2 |
| 10 | Endoscopic Ultrasound and Computed Tomography Predictors of Pancreatic Cancer Resectability显示文摘 | Philip Q. Bao J. Chad Johnson Elizabeth H. Lindsey David A. Schwartz Ron C. Arildsen Ewa Grzeszczak Alexander A. Parikh Nipun B. Merchant | 2008 | Journal of Gastrointestinal Surgery2008，，1： | 2 |
| 11 | Histamine 3 receptor activation mediates inhibition of acid secretion during Helicobacter-induced gastritis显示文摘AIM:To test the hypothesis that histamine 3 receptor (H3R)activation during Helicobacter infection inhibits gastric acid secretion in vivo and in vitro.METHODS:Helicobacter felis(H.felis)infected and uninfected C57Bl/6 mice were infused with either PBS or the H3 receptor antagonist thioperamide(THIO)for 12 wk.After treatment,mice were analyzed for morphological changes and gastric acid content.Total RNA was prepared from the stomachs of each group and analyzed for changes in somatostatin and gastrin mRNA abundance by real time-polymerase chain reaction(RTPCR).Location of H3 receptors in the stomach was analyzed by co-localization using antibodies specific for the H3 receptor and parietal cell marker H + ,K + -ATPase βsubunit. RESULTS:Inflammation and parietal cell atrophy was observed after 12 wk of H.felis infection.Interestingly, treatment with the H3R antagonist thioperamide(THIO) prior to and during infection prevented H.felis-induced inflammation and atrophy.Compared to the uninfected controls,infected mice also had significantly decreased gastric acid.After eradication of H.felis with THIO treatment,gastric acidity was restored.Compared to the control mice,somatostatin mRNA abundance was decreased while gastrin gene expression was elevated during infection.Despite elevated gastric acid levels, after eradication of H.felis with THIO,somatostatin mRNA was elevated whereas gastrin mRNA was suppressed.Immunofluorescence revealed the presence of H3 receptors on the parietal cells,somatostatin-secreting D-cells as well as the inflammatory cells. CONCLUSION:This study shows that during H.felis infection,gastric acidity is suppressed as a consequence of an inhibitory effect on the parietal cell by H3R activation.The stimulation of gastric mucosal H3Rs increases gastrin expression and release by inhibiting release of somatostatin. | Yana Zavros Nisreen Mesiwala Meghna Waghray Andrea Todisco Arthur Shulkes Juanita L Merchant | 2010 | World Journal of Gastrointestinal Pathophysiology2010，1，5： | 2 |
| 12 | Left-sided Pancreatectomy: A Multicenter Comparison of Laparoscopic and Open Approaches显示文摘 | David A. Kooby Theresa Gillespie David Bentrem Attila Nakeeb Max c. Schmidt Nipun B. Merchant Alex A. Parikh Robert C. G. Martin Charles R. Scoggins Syed Ahmad Hong Jin Kim Jaemin Park Fabian Johnston Matthew J. Strouch Alex Menze Jennifer Rymer Rebecca M | 2008 | Annals of Surgery2008，，3： | 2 |
| 13 | Effects of advertising-evoked vicarious nostalgia on brand heritage显示文摘 | Altaf Merchant Gregory M. Rose | 2012 | Journal of Business Research2012，，： | 2 |
| 14 | Design for mass customization显示文摘 | Tseng M M Jiao J Merchant M E | 1996 | CIRP Annals-Manufacturing Technology1996，45，1： | 1 |
| 15 | Proteomics and diabetic retinopathy显示文摘 | Merchant M L Klein J B | 2009 | Clin Lab Med2009，29，1： | 1 |
| 16 | Long - term follow - up after fracture of the tibial and fibular shafts 显示文摘 | Merchant TC Dietz FR | 1989 | J Bone Joint surg( Am)1989，71，4： | 1 |
| 17 | Analytical model for the electric field distribution in SOI resurf and TMBS structures显示文摘 | Merchant S | 1999 | IEEE Transaction on Electron Devices1999，46，6： | 1 |
| 18 | Recent advancements in surface-enhanced laser desorption/ionization-time of flight-mass spectrometry显示文摘 | Merchant M Weinberger SR | 2000 | Electrophoresis2000，21，： | 1 |
| 19 | Recent advancements in surface-enhanced laser desorption/ionozation-time of flight-mass spectrimetry显示文摘 | MERCHANT M WEINBERGER SR | 2000 | Electrophoresis2000，1，4： | 1 |
| 20 | Long-tern follow-up after fractures of the tibial and fibular shaft显示文摘 | Merchant TC Dietz FR | 1989 | J Bone Joint Surg (Am)1989，71，4： | 1 |
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