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James buxbaum

Bechien U Wu, Michael Batech, Michael Quezada, Daniel Lew, Kelly Fujikawa, Jonathan Kung, Laith H Jamil, Wansu Chen, Elham Afghani, Sonya Reicher, James Buxbaum, Stephen J Pandol
OBJECTIVES: Acute pancreatitis has a highly variable course. Currently there is no widely accepted method to measure disease activity in patients hospitalized for acute pancreatitis. We aimed to develop a clinical activity index that incorporates routine clinical parameters to assist in the measurement, study, and management of acute pancreatitis. METHODS: We used the UCLA/RAND appropriateness method to identify items for inclusion in the disease activity instrument...
May 2, 2017: American Journal of Gastroenterology
Nitzan Roth, Preeth Jayaram, James Buxbaum
No abstract text is available yet for this article.
April 2017: American Journal of Gastroenterology
James L Buxbaum, David Hormozdi, Mario Dinis-Ribeiro, Christianne Lane, Diogo Dias-Silva, Ara Sahakian, Preeth Jayaram, Pedro Pimentel-Nunes, Daniel Shue, Michael Pepper, Daniel Cho, Loren Laine
BACKGROUND AND AIMS: Gastric intestinal metaplasia (GIM) is a gastric cancer precursor. Narrow-band imaging (NBI) may improve detection of GIM. We compared detection of GIM with high-definition white-light (HD-WL) endoscopy, NBI, and mapping biopsies in a population with increased gastric cancer risk. METHODS: Patients undergoing upper endoscopy had HD-WL examination by 1 endoscopist, followed by an NBI examination by a second endoscopist blinded to HD-WL findings...
March 30, 2017: Gastrointestinal Endoscopy
Preeth Jayaram, Alex Shindel, James Buxbaum
No abstract text is available yet for this article.
March 11, 2017: Clinical Gastroenterology and Hepatology
James L Buxbaum, Michael Quezada, Ben Da, Niraj Jani, Christianne Lane, Didi Mwengela, Thomas Kelly, Paul Jhun, Kiran Dhanireddy, Loren Laine
OBJECTIVES: Early aggressive intravenous hydration is recommended for acute pancreatitis treatment although randomized trials have not documented benefit. We performed a randomized trial of aggressive vs. standard hydration in the initial management of mild acute pancreatitis. METHODS: Sixty patients with acute pancreatitis without systemic inflammatory response syndrome (SIRS) or organ failure were randomized within 4 h of diagnosis to aggressive (20 ml/kg bolus followed by 3 ml/kg/h) vs...
May 2017: American Journal of Gastroenterology
Linda A Hou, Loren Laine, Nima Motamedi, Ara Sahakian, Christianne Lane, James Buxbaum
OBJECTIVES: Acute cholangitis mandates resuscitation, antibiotic therapy, and biliary decompression. Our aim was to define the optimal timing of endoscopic retrograde cholangiopancreatography (ERCP) for patients with acute cholangitis. METHODS: Clinical data on all cases of cholangitis managed by ERCP were prospectively collected from September 2010 to July 2013. The clinical impact of the time to ERCP, defined as the time from presentation in the emergency department to the commencement of the ERCP, was determined...
July 2017: Journal of Clinical Gastroenterology
Paige M Siper, Vance Zemon, James Gordon, Julia George-Jones, Stacey Lurie, Jessica Zweifach, Teresa Tavassoli, A Ting Wang, Jesslyn Jamison, Joseph D Buxbaum, Alexander Kolevzon
OBJECTIVE: There is a critical need to identify biomarkers and objective outcome measures that can be used to understand underlying neural mechanisms in autism spectrum disorder (ASD). Visual evoked potentials (VEPs) offer a noninvasive technique to evaluate the functional integrity of neural mechanisms, specifically visual pathways, while probing for disease pathophysiology. METHODS: Transient VEPs (tVEPs) were obtained from 96 unmedicated children, including 37 children with ASD, 36 typically developing (TD) children, and 23 unaffected siblings (SIBS)...
2016: PloS One
Sujit S Kulkarni, Mayo Hotta, Linda Sher, Robert R Selby, Dilipkumar Parekh, James Buxbaum, Maria Stapfer
BACKGROUND: Mirizzi syndrome (MS) is characterized by an obstruction of the proximal bile duct due to extrinsic compression by either an impacted stone in the gallbladder neck or local inflammatory changes. Although this is a rare syndrome in developed countries (0.7-1.4 %), preoperative diagnosis and careful surgical management are essential to avoid bilio-vascular injuries and misdiagnosed malignancy. METHODS: The purpose of this study was to review our experience in the diagnosis and management of MS, assess the role of laparoscopy and the risk of concomitant gallbladder carcinoma...
May 2017: Surgical Endoscopy
Daniel S Evans, Christy L Avery, Mike A Nalls, Guo Li, John Barnard, Erin N Smith, Toshiko Tanaka, Anne M Butler, Sarah G Buxbaum, Alvaro Alonso, Dan E Arking, Gerald S Berenson, Joshua C Bis, Steven Buyske, Cara L Carty, Wei Chen, Mina K Chung, Steven R Cummings, Rajat Deo, Charles B Eaton, Ervin R Fox, Susan R Heckbert, Gerardo Heiss, Lucia A Hindorff, Wen-Chi Hsueh, Aaron Isaacs, Yalda Jamshidi, Kathleen F Kerr, Felix Liu, Yongmei Liu, Kurt K Lohman, Jared W Magnani, Joseph F Maher, Reena Mehra, Yan A Meng, Solomon K Musani, Christopher Newton-Cheh, Kari E North, Bruce M Psaty, Susan Redline, Jerome I Rotter, Renate B Schnabel, Nicholas J Schork, Ralph V Shohet, Andrew B Singleton, Jonathan D Smith, Elsayed Z Soliman, Sathanur R Srinivasan, Herman A Taylor, David R Van Wagoner, James G Wilson, Taylor Young, Zhu-Ming Zhang, Alan B Zonderman, Michele K Evans, Luigi Ferrucci, Sarah S Murray, Gregory J Tranah, Eric A Whitsel, Alex P Reiner, Nona Sotoodehnia
The electrocardiographic QRS duration, a measure of ventricular depolarization and conduction, is associated with cardiovascular mortality. While single nucleotide polymorphisms (SNPs) associated with QRS duration have been identified at 22 loci in populations of European descent, the genetic architecture of QRS duration in non-European populations is largely unknown. We therefore performed a genome-wide association study (GWAS) meta-analysis of QRS duration in 13,031 African Americans from ten cohorts and a transethnic GWAS meta-analysis with additional results from populations of European descent...
October 1, 2016: Human Molecular Genetics
Yuji Kajiwara, Andrew McKenzie, Nate Dorr, Miguel A Gama Sosa, Gregory Elder, James Schmeidler, Dara L Dickstein, Ozlem Bozdagi, Bin Zhang, Joseph D Buxbaum
Recent studies have indicated that innate immune signalling molecules are involved in late-onset Alzheimer's disease (LOAD) risk. Amyloid beta (Aβ) accumulates in AD brain, and has been proposed to act as a trigger of innate immune responses. Caspase-4 is an important part of the innate immune response. We recently characterized transgenic mice carrying human CASP4, and observed that the mice manifested profound innate immune responses to lipopolysaccharide (LPS). Since these inflammatory processes are important in the aetiology of AD, we have now analysed the correlation of expression of caspase-4 in human brain with AD risk genes, and studied caspase-4 effects on AD-related phenotypes in APPswe/PS1deltaE9 (APP/PS1) mice...
October 1, 2016: Human Molecular Genetics
James Buxbaum, Nitzan Roth, Nima Motamedi, Terrance Lee, Paul Leonor, Mark Salem, Dolores Gibbs, John Vargo
OBJECTIVES: Sedation is required to perform endoscopic retrograde cholangiopancreatography (ERCP) and endoscopic ultrasound (EUS) given the duration and complexity of these advanced procedures. Sedation options include anesthetist-directed sedation (ADS) vs. gastroenterologist-directed sedation (GDS). Although ADS has been shown to shorten induction and recovery times, it is not established whether it impacts likelihood of procedure completion. Our aim was to assess whether ADS impacts the success of advanced endoscopy procedures...
February 2017: American Journal of Gastroenterology
James Buxbaum, Paul Leonor, Jonathan Tung, Christianne Lane, Ara Sahakian, Loren Laine
OBJECTIVES: Biliary cannulation is frequently the most difficult component of endoscopic retrograde cholangiopancreatography (ERCP). Techniques employed to improve safety and efficacy include wire-guided access and the use of sphincterotomes. However, a variety of options for these techniques are available and optimum strategies are not defined. We assessed whether the use of endoscopist- vs. assistant-controlled wire guidance and small vs. standard-diameter sphincterotomes improves safety and/or efficacy of bile duct cannulation...
December 2016: American Journal of Gastroenterology
Ben Da, James Buxbaum
The practice of endoscopic sedation requires a thorough understanding of preprocedural assessment, sedation pharmacology, intraprocedure monitoring, adverse event management, and postprocedural care. The training process has become increasingly standardized and entails knowledge and practice-based components. The use of propofol in particular requires a higher level of structured training owing to its narrow therapeutic window. Simulation has increased opportunities for practice-based training in a controlled environment...
July 2016: Gastrointestinal Endoscopy Clinics of North America
Pedro Pimentel-Nunes, Diogo Libânio, Jorge Lage, Diogo Abrantes, Miguel Coimbra, Gianluca Esposito, David Hormozdi, Mike Pepper, Silvia Drasovean, Jonathan R White, Daniela Dobru, James Buxbaum, Krish Ragunath, Bruno Annibale, Mário Dinis-Ribeiro
BACKGROUND AND AIM: Some studies suggest that narrow-band imaging (NBI) can be more accurate at diagnosing gastric intestinal metaplasia and dysplasia than white-light endoscopy (WLE) alone. We aimed to assess the real-time diagnostic validity of high resolution endoscopy with and without NBI in the diagnosis of gastric premalignant conditions and to derive a classification for endoscopic grading of gastric intestinal metaplasia (EGGIM). METHODS: A multicenter prospective study (five centers: Portugal, Italy, Romania, UK, USA) was performed involving the systematic use of high resolution gastroscopes with image registry with and without NBI in a centralized informatics platform (available online)...
August 2016: Endoscopy
Sarah Sheibani, Saro Khemichian, John J Kim, Linda Hou, Arthur W Yan, James Buxbaum, Lily Dara, Loren Laine
UNLABELLED: The appropriate interval between ligation sessions for treatment of esophageal variceal bleeding is uncertain. The optimal interval would provide variceal eradication as rapidly as possible to lessen early rebleeding while minimizing ligation-induced adverse events. We randomly assigned patients hospitalized with acute esophageal variceal bleeding who had successful ligation at presentation to repeat ligation at 1-week or 2-week intervals. Beta-blocker therapy was also prescribed...
August 2016: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
Holly Rochefort, Lea Matsuoka, Konstantinos Chouliaras, Didi Mwengela, James Buxbaum, Sophoclis P Alexopoulos
Endoscopic retrograde cholangiopancreatography (ERCP) is frequently used to clear the common bile duct (CBD) in patients with choledocholithiasis. While a single ERCP is usually effective, many patients undergo multiple ERCP attempts before cholecystectomy. Here we sought to identify preoperative factors predictive of surgical complexity beyond routine laparoscopic cholecystectomy after ERCP. Data were prospectively collected for all ERCPs between September 2010 and February 2012 at a public academic medical center including demographics, indication, stone presence, CBD diameter, sphincterotomy, stent placement, and ERCP number...
February 2016: American Surgeon
Shou-Jiang Tang, Andreas S Vilmann, Adrian Saftoiu, Wanmei Wang, Costin Teodor Streba, Peter P Fink, Michael Griswold, Ruonan Wu, Christoph F Dietrich, Christian Jenssen, Michael Hocke, Marcus Kantowski, Jürgen Pohl, Paul Fockens, Jouke T Annema, Erik H F M van der Heijden, Roald Flesland Havre, Khanh Do-Cong Pham, Rastislav Kunda, Pierre H Deprez, Jinga Mariana, Enrique Vazquez-Sequeiros, Alberto Larghi, Elisabetta Buscarini, Pietro Fusaroli, Maor Lahav, Rajesh Puri, Pramod Kumar Garg, Malay Sharma, Fauze Maluf-Filho, Anand Sahai, William R Brugge, Linda S Lee, Harry R Aslanian, Andrew Y Wang, Vanessa M Shami, Arnold Markowitz, Ali A Siddiqui, Girish Mishra, James M Scheiman, Gerard Isenberg, Uzma D Siddiqui, Raj J Shah, James Buxbaum, Rabindra R Watson, Field F Willingham, Manoop S Bhutani, Michael J Levy, Cynthia Harris, Michael B Wallace, Christian Pállson Nolsøe, Torben Lorentzen, Niels Bang, Sten Mellerup Sørensen, Odd Helge Gilja, Mirko D'Onofrio, Fabio Piscaglia, Norbert Gritzmann, Maija Radzina, Zeno Adrian Sparchez, Paul S Sidhu, Simon Freeman, Timothy C McCowan, Cyrillo Rodrigues de Araujo, Akash Patel, Mohammad Adel Ali, Garth Campbell, Edward Chen, Peter Vilmann
BACKGROUND AND AIMS: EUS-guided FNA or biopsy sampling is widely practiced. Optimal sonographic visualization of the needle is critical for image-guided interventions. Of the several commercially available needles, bench-top testing and direct comparison of these needles have not been done to reveal their inherent echogenicity. The aims are to provide bench-top data that can be used to guide clinical applications and to promote future device research and development. METHODS: Descriptive bench-top testing and comparison of 8 commonly used EUS-FNA needles (all size 22 gauge): SonoTip Pro Control (Medi-Globe); Expect Slimline (Boston Scientific); EchoTip, EchoTip Ultra, EchoTip ProCore High Definition (Cook Medical); ClearView (Conmed); EZ Shot 2 (Olympus); and BNX (Beacon Endoscopic), and 2 new prototype needles, SonoCoat (Medi-Globe), coated by echogenic polymers made by Encapson...
September 2016: Gastrointestinal Endoscopy
Ben L Da, Ira A Shulman, Christianne Joy Lane, James Buxbaum
OBJECTIVE: The diagnosis of acute pancreatitis (AP) is defined as a constellation of abnormal pancreatic enzymes, imaging, and characteristic pain. The origin and clinical significance of isolated hyperlipasemia is unclear. METHODS: We prospectively evaluated patients with serum lipase level greater than 3 times the upper limit of normal (ULN) admitted to Los Angeles County Hospital from October 2014 to April 2015. Patients were identified by a daily laboratory query used to support an ongoing randomized trial of goal-directed therapy for AP (NCT 01761539)...
July 2016: Pancreas
Niraj Jani, James Buxbaum
Autoimmune pancreatitis (AIP) is part of a systemic fibrosclerotic process characterized by lymphoplasmacytic infiltrate with immunoglobulin G subtype-4 (IgG4) positive cells. It characteristically presents with biliary obstruction due to mass-like swelling of the pancreas. Frequently AIP is accompanied by extra-pancreatic manifestations including retroperitoneal fibrosis, thyroid disease, and salivary gland involvement. Auto-antibodies, hypergammaglobulemia, and prompt resolution of pancreatic and extrapancreatic findings with steroids signify its autoimmune nature...
November 6, 2015: World Journal of Gastrointestinal Pharmacology and Therapeutics
Stephan J Sanders, Xin He, A Jeremy Willsey, A Gulhan Ercan-Sencicek, Kaitlin E Samocha, A Ercument Cicek, Michael T Murtha, Vanessa H Bal, Somer L Bishop, Shan Dong, Arthur P Goldberg, Cai Jinlu, John F Keaney, Lambertus Klei, Jeffrey D Mandell, Daniel Moreno-De-Luca, Christopher S Poultney, Elise B Robinson, Louw Smith, Tor Solli-Nowlan, Mack Y Su, Nicole A Teran, Michael F Walker, Donna M Werling, Arthur L Beaudet, Rita M Cantor, Eric Fombonne, Daniel H Geschwind, Dorothy E Grice, Catherine Lord, Jennifer K Lowe, Shrikant M Mane, Donna M Martin, Eric M Morrow, Michael E Talkowski, James S Sutcliffe, Christopher A Walsh, Timothy W Yu, David H Ledbetter, Christa Lese Martin, Edwin H Cook, Joseph D Buxbaum, Mark J Daly, Bernie Devlin, Kathryn Roeder, Matthew W State
Analysis of de novo CNVs (dnCNVs) from the full Simons Simplex Collection (SSC) (N = 2,591 families) replicates prior findings of strong association with autism spectrum disorders (ASDs) and confirms six risk loci (1q21.1, 3q29, 7q11.23, 16p11.2, 15q11.2-13, and 22q11.2). The addition of published CNV data from the Autism Genome Project (AGP) and exome sequencing data from the SSC and the Autism Sequencing Consortium (ASC) shows that genes within small de novo deletions, but not within large dnCNVs, significantly overlap the high-effect risk genes identified by sequencing...
September 23, 2015: Neuron
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