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Charles vollmer

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https://www.readbyqxmd.com/read/29548006/tn5prime-a-tn5-based-5-capture-method-for-single-cell-rna-seq
#1
Charles Cole, Ashley Byrne, Anna E Beaudin, E Camilla Forsberg, Christopher Vollmers
RNA-sequencing (RNA-seq) is a powerful technique to investigate and quantify entire transcriptomes. Recent advances in the field have made it possible to explore the transcriptomes of single cells. However, most widely used RNA-seq protocols fail to provide crucial information regarding transcription start sites. Here we present a protocol, Tn5Prime, that takes advantage of the Tn5 transposase-based Smart-seq2 protocol to create RNA-seq libraries that capture the 5' end of transcripts. The Tn5Prime method dramatically streamlines the 5' capture process and is both cost effective and reliable...
March 14, 2018: Nucleic Acids Research
https://www.readbyqxmd.com/read/29522897/interdisciplinary-team-based-care-for-patients-with-chronic-pain-on-long-term-opioid-treatment-in-primary-care-ppact-protocol-for-a-pragmatic-cluster-randomized-trial
#2
Lynn DeBar, Lindsay Benes, Allison Bonifay, Richard A Deyo, Charles R Elder, Francis J Keefe, Michael C Leo, Carmit McMullen, Meghan Mayhew, Ashli Owen-Smith, David H Smith, Connie M Trinacty, William M Vollmer
BACKGROUND: Chronic pain is one of the most common, disabling, and expensive public health problems in the United States. Interdisciplinary pain management treatments that employ behavioral approaches have been successful in helping patients with chronic pain reduce symptoms and regain functioning. However, most patients lack access to such treatments. We are conducting a pragmatic clinical trial to test the hypothesis that patients who receive an interdisciplinary biopsychosocial intervention, the Pain Program for Active Coping and Training (PPACT), at their primary care clinic will have a greater reduction in pain impact in the year following than patients receiving usual care...
April 2018: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/29489483/the-beneficial-effects-of-minimizing-blood-loss-in-pancreatoduodenectomy
#3
Thomas F Seykora, Brett L Ecker, Matthew T McMillan, Laura Maggino, Joal D Beane, Zhi Ven Fong, Robert H Hollis, Nigel B Jamieson, Ammar A Javed, Stacy J Kowalsky, John W Kunstman, Giuseppe Malleo, Katherine E Poruk, Kevin Soares, Vicente Valero, Lavanniya K P Velu, Ammara A Watkins, Charles M Vollmer
OBJECTIVE: The aim of this study was to elucidate the impact of intraoperative blood loss on outcomes following pancreatoduodenectomy (PD). BACKGROUND: The negative impact of intraoperative blood loss on outcomes in PD has long been suspected but not well characterized, particularly those factors that may be within surgeons' control. METHODS: From 2001 to 2015, 5323 PDs were performed by 62 surgeons from 17 institutions. Estimated blood loss (EBL) was discretized (0 to 300, 301 to 750, 751 to 1300, and >1300 mL) using optimal scaling methodology...
February 27, 2018: Annals of Surgery
https://www.readbyqxmd.com/read/29408353/impact-of-operative-time-on-outcomes-after-pancreatic-resection-a-risk-adjusted-analysis-using-the-american-college-of-surgeons-nsqip-database
#4
Laura Maggino, Jason B Liu, Brett L Ecker, Henry A Pitt, Charles M Vollmer
BACKGROUND: Longer operative time (OT) has been associated with negative outcomes in various surgical procedures, but its role in pancreatic resection, a complex, high-acuity endeavor, is not yet well defined. The aim of this study was to analyze the relationship between OT and pancreatectomy outcomes in a risk-adjusted fashion. STUDY DESIGN: This retrospective cohort study analyzed patients undergoing pancreaticoduodenectomy (PD) or distal pancreatectomy (DP) between 2014 and 2015 using the procedure-targeted pancreatectomy database of the American College of Surgeons NSQIP...
May 2018: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/29362902/a-phase-i-dose-escalation-trial-of-nab-paclitaxel-and-fixed-dose-radiation-in-patients-with-unresectable-or-borderline-resectable-pancreatic-cancer
#5
Jacob E Shabason, Jerry Chen, Smith Apisarnthanarax, Nevena Damjanov, Bruce Giantonio, Arturo Loaiza-Bonilla, Peter J O'Dwyer, Mark O'Hara, Kim A Reiss, Ursina Teitelbaum, Paul Wissel, Jeffrey A Drebin, Charles Vollmer, Michael Kochman, Rosemarie Mick, Norge Vergara, Nirag Jhala, Abigail Doucette, John N Lukens, John P Plastaras, James M Metz, Edgar Ben-Josef
PURPOSE: Patients with locally advanced pancreatic cancer typically have poor outcomes, with a median survival of approximately 16 months. Novel methods to improve outcomes are needed. Nab-paclitaxel (Abraxane) has shown efficacy in pancreatic cancer and is FDA-approved for metastatic disease in combination with gemcitabine. Nab-paclitaxel is also a promising radiosensitizer based on laboratory studies, but it has never been clinically tested with definitive radiotherapy for locally advanced pancreatic carcinoma...
March 2018: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/29334556/decoding-grade-b-pancreatic-fistula-a-clinical-and-economical-analysis-and-subclassification-proposal
#6
Laura Maggino, Giuseppe Malleo, Claudio Bassi, Valentina Allegrini, Matthew T McMillan, Alex Borin, Bofeng Chen, Jeffrey A Drebin, Brett L Ecker, Douglas L Fraker, Major K Lee, Salvatore Paiella, Robert E Roses, Roberto Salvia, Charles M Vollmer
OBJECTIVE: The aim of this study was to describe characteristics and management approaches for grade B pancreatic fistula (B-POPF) and investigate whether it segregates into distinct subclasses. BACKGROUND: The 2016 ISGPS refined definition of B-POPF is predicated on various postoperative management approaches, ranging from prolonged drainage to interventional procedures, but the spectrum of clinical severity within this entity is yet undefined. METHODS: Pancreatectomies performed at 2 institutions from 2007 to 2016 were reviewed to identify B-POPFs and their treatment strategies...
January 12, 2018: Annals of Surgery
https://www.readbyqxmd.com/read/29240007/alternative-fistula-risk-score-for-pancreatoduodenectomy-a-frs-design-and-international-external-validation
#7
Timothy H Mungroop, L Bengt van Rijssen, David van Klaveren, F Jasmijn Smits, Victor van Woerden, Ralph J Linnemann, Matteo de Pastena, Sjors Klompmaker, Giovanni Marchegiani, Brett L Ecker, Susan van Dieren, Bert Bonsing, Olivier R Busch, Ronald M van Dam, Joris Erdmann, Casper H van Eijck, Michael F Gerhards, Harry van Goor, Erwin van der Harst, Ignace H de Hingh, Koert P de Jong, Geert Kazemier, Misha Luyer, Awad Shamali, Salvatore Barbaro, Thomas Armstrong, Arjun Takhar, Zaed Hamady, Joost Klaase, Daan J Lips, I Quintus Molenaar, Vincent B Nieuwenhuijs, Coen Rupert, Hjalmar C van Santvoort, Joris J Scheepers, George P van der Schelling, Claudio Bassi, Charles M Vollmer, Ewout W Steyerberg, Mohammed Abu Hilal, Bas Groot Koerkamp, Marc G Besselink
OBJECTIVE: The aim of this study was to develop an alternative fistula risk score (a-FRS) for postoperative pancreatic fistula (POPF) after pancreatoduodenectomy, without blood loss as a predictor. BACKGROUND: Blood loss, one of the predictors of the original-FRS, was not a significant factor during 2 recent external validations. METHODS: The a-FRS was developed in 2 databases: the Dutch Pancreatic Cancer Audit (18 centers) and the University Hospital Southampton NHS...
December 12, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28952140/identification-of-patients-for-adjuvant-therapy-after-resection-of-carcinoma-of-the-extrahepatic-bile-ducts-a-propensity-score-matched-analysis
#8
Brett L Ecker, Charles C Vining, Robert E Roses, Laura Maggino, Major K Lee, Jeffrey A Drebin, Douglas L Fraker, Charles M Vollmer, Jashodeep Datta
BACKGROUND: Resectability rates for extrahepatic cholangiocarcinoma have increased over time, but long-term survival after resection alone with curative intent remains poor. Recent series suggest improved survival with adjuvant therapy. Patient subsets benefiting most from adjuvant therapy have not been clearly defined. METHODS: Patients with extrahepatic cholangiocarcinoma who underwent resection with curative intent and received adjuvant therapy (chemotherapy ± radiotherapy) or surgery alone (SA) were identified in the U...
December 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28938266/identification-of-an-optimal-cut-off-for-drain-fluid-amylase-on-postoperative-day-1-for-predicting-clinically-relevant-fistula-after-distal-pancreatectomy-a-multi-institutional-analysis-and-external-validation
#9
Laura Maggino, Giuseppe Malleo, Claudio Bassi, Valentina Allegrini, Joal D Beane, Ross M Beckman, Bofeng Chen, Euan J Dickson, Jeffrey A Drebin, Brett L Ecker, Douglas L Fraker, Michael G House, Nigel B Jamieson, Ammar A Javed, Stacy J Kowalsky, Major K Lee, Matthew T McMillan, Robert E Roses, Roberto Salvia, Vicente Valero, Lavanniya K P Velu, Christopher L Wolfgang, Amer H Zureikat, Charles M Vollmer
OBJECTIVE: The aim of this study was to investigate the relationship between drain fluid amylase value on the first postoperative day (DFA1) and clinically relevant fistula (CR-POPF) after distal pancreatectomy (DP), and to identify the cut-off of DFA1 that optimizes CR-POPF prediction. BACKGROUND: DFA1 is a well-recognized predictor of CR-POPF after pancreatoduodenectomy, but its role in DP is largely unexplored. METHODS: DFA1 levels were correlated with CR-POPF in 2 independent multi-institutional sets of DP patients: developmental (n = 338; years 2012 to 2017) and validation cohort (n = 166; years 2006 to 2016)...
September 21, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28875275/decision-making-for-the-management-of-cystic-lesions-of-the-pancreas-how-satisfied-are-patients-with-surgery
#10
Priya M Puri, Ammara A Watkins, Tara S Kent, Laura Maggino, Jenna Gates Jeganathan, Mark P Callery, Jeffrey A Drebin, Charles M Vollmer
INTRODUCTION: This study aims to understand patients' perspectives and satisfaction with choosing surgery for the treatment of pancreatic cystic lesions (PCLs). METHODS: A 62-question survey was administered to 113 patients who had a resection for a PCL by 12 surgeons at two pancreatic specialty centers (2004-2016). Patients' final diagnoses and perioperative outcomes were correlated to the survey's results using univariate analysis. RESULTS: Fear of cancer was quite or extremely important in most respondents' decision to have surgery (95...
January 2018: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/28857813/risk-factors-and-mitigation-strategies-for-pancreatic-fistula-after-distal-pancreatectomy-analysis-of-2026-resections-from-the-international-multi-institutional-distal-pancreatectomy-study-group
#11
Brett L Ecker, Matthew T McMillan, Valentina Allegrini, Claudio Bassi, Joal D Beane, Ross M Beckman, Stephen W Behrman, Euan J Dickson, Mark P Callery, John D Christein, Jeffrey A Drebin, Robert H Hollis, Michael G House, Nigel B Jamieson, Ammar A Javed, Tara S Kent, Michael D Kluger, Stacy J Kowalsky, Laura Maggino, Giuseppe Malleo, Vicente Valero, Lavanniya K P Velu, Amarra A Watkins, Christopher L Wolfgang, Amer H Zureikat, Charles M Vollmer
OBJECTIVE: To identify a clinical fistula risk score following distal pancreatectomy. BACKGROUND: Clinically relevant pancreatic fistula (CR-POPF) following distal pancreatectomy (DP) is a dominant contributor to procedural morbidity, yet risk factors attributable to CR-POPF and effective practices to reduce its occurrence remain elusive. METHODS: This multinational, retrospective study of 2026 DPs involved 52 surgeons at 10 institutions (2001-2016)...
August 29, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28852967/recent-advances-in-pancreatic-cancer-surgery
#12
REVIEW
Laura Maggino, Charles M Vollmer
Pancreatic cancer surgery is a continuously evolving field. Despite tremendous advances in perioperative outcomes, pancreatic resection is still associated with substantial morbidity, and mortality is not nil. Institutional caseload is a well-established determinant of patient outcomes, and centralization to experienced centers is essential to the safety and oncological appropriateness of the resection. Minimally invasive approaches are increasingly applied for pancreatic resection, even in cancer patients...
December 2017: Current Treatment Options in Gastroenterology
https://www.readbyqxmd.com/read/28840459/pancreatogastrostomy-vs-pancreatojejunostomy-a-risk-stratified-analysis-of-5316-pancreatoduodenectomies
#13
Brett L Ecker, Matthew T McMillan, Laura Maggino, Valentina Allegrini, Horacio J Asbun, Chad G Ball, Claudio Bassi, Joal D Beane, Stephen W Behrman, Adam C Berger, Mark Bloomston, Mark P Callery, John D Christein, Euan Dickson, Elijah Dixon, Jeffrey A Drebin, Carlos Fernandez-Del Castillo, William E Fisher, Zhi Ven Fong, Ericka Haverick, Robert H Hollis, Michael G House, Steven J Hughes, Nigel B Jamieson, Tara S Kent, Stacy J Kowalsky, John W Kunstman, Giuseppe Malleo, Ronald R Salem, Kevin C Soares, Vicente Valero, Ammara A Watkins, Christopher L Wolfgang, Amer H Zureikat, Charles M Vollmer
No abstract text is available yet for this article.
January 2018: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/28803644/surgical-experience-and-the-practice-of-pancreatoduodenectomy
#14
Gregory T Kennedy, Matthew T McMillan, Laura Maggino, Michael H Sprys, Charles M Vollmer
BACKGROUND: Experienced surgeons demonstrate improved pancreatoduodenectomy outcomes, but little is known about what distinguishes their practice. Furthermore, the concept of experience has been variably interpreted in the surgical literature. We investigated how 4 interpretations of experience influence pancreatoduodenectomy management decisions. METHODS: A survey assessing pancreatoduodenectomy practice patterns was distributed by 6 surgical societies. Regression analysis identified behaviors associated with 4 forms of experience: years in practice, surpassing the learning curve (≥50 pancreatoduodenectomies), high annual volume (≥25 pancreatoduodenectomy/year), and high career volume (>200 pancreatoduodenectomy)...
October 2017: Surgery
https://www.readbyqxmd.com/read/28722025/nanopore-long-read-rnaseq-reveals-widespread-transcriptional-variation-among-the-surface-receptors-of-individual-b-cells
#15
Ashley Byrne, Anna E Beaudin, Hugh E Olsen, Miten Jain, Charles Cole, Theron Palmer, Rebecca M DuBois, E Camilla Forsberg, Mark Akeson, Christopher Vollmers
Understanding gene regulation and function requires a genome-wide method capable of capturing both gene expression levels and isoform diversity at the single-cell level. Short-read RNAseq is limited in its ability to resolve complex isoforms because it fails to sequence full-length cDNA copies of RNA molecules. Here, we investigate whether RNAseq using the long-read single-molecule Oxford Nanopore MinION sequencer is able to identify and quantify complex isoforms without sacrificing accurate gene expression quantification...
July 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28692468/a-prospective-randomized-multicenter-trial-of-distal-pancreatectomy-with-and-without-routine-intraperitoneal-drainage
#16
RANDOMIZED CONTROLLED TRIAL
George Van Buren, Mark Bloomston, Carl R Schmidt, Stephen W Behrman, Nicholas J Zyromski, Chad G Ball, Katherine A Morgan, Steven J Hughes, Paul J Karanicolas, John D Allendorf, Charles M Vollmer, Quan Ly, Kimberly M Brown, Vic Velanovich, Jordan M Winter, Amy L McElhany, Peter Muscarella, Christian Max Schmidt, Michael G House, Elijah Dixon, Mary E Dillhoff, Jose G Trevino, Julie Hallet, Natalie S G Coburn, Attila Nakeeb, Kevin E Behrns, Aaron R Sasson, Eugene P Ceppa, Sherif R Z Abdel-Misih, Taylor S Riall, Eric J Silberfein, Edwin C Ellison, David B Adams, Cary Hsu, Hop S Tran Cao, Somala Mohammed, Nicole Villafañe-Ferriol, Omar Barakat, Nader N Massarweh, Christy Chai, Jose E Mendez-Reyes, Andrew Fang, Eunji Jo, Qianxing Mo, William E Fisher
OBJECTIVE: The objective of this study was to test the hypothesis that distal pancreatectomy (DP) without intraperitoneal drainage does not affect the frequency of grade 2 or higher grade complications. BACKGROUND: The use of routine intraperitoneal drains during DP is controversial. Prior to this study, no prospective trial focusing on DP without intraperitoneal drainage has been reported. METHODS: Patients undergoing DP for all causes at 14 high-volume pancreas centers were preoperatively randomized to placement of a drain or no drain...
September 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28688818/diabetes-in-sub-saharan-africa-from-clinical-care-to-health-policy
#17
REVIEW
Rifat Atun, Justine I Davies, Edwin A M Gale, Till Bärnighausen, David Beran, Andre Pascal Kengne, Naomi S Levitt, Florence W Mangugu, Moffat J Nyirenda, Graham D Ogle, Kaushik Ramaiya, Nelson K Sewankambo, Eugene Sobngwi, Solomon Tesfaye, John S Yudkin, Sanjay Basu, Christian Bommer, Esther Heesemann, Jennifer Manne-Goehler, Iryna Postolovska, Vera Sagalova, Sebastian Vollmer, Zulfiqarali G Abbas, Benjamin Ammon, Mulugeta Terekegn Angamo, Akhila Annamreddi, Ananya Awasthi, Stéphane Besançon, Sudhamayi Bhadriraju, Agnes Binagwaho, Philip I Burgess, Matthew J Burton, Jeanne Chai, Felix P Chilunga, Portia Chipendo, Anna Conn, Dipesalema R Joel, Arielle W Eagan, Crispin Gishoma, Julius Ho, Simcha Jong, Sujay S Kakarmath, Yasmin Khan, Ramu Kharel, Michael A Kyle, Seitetz C Lee, Amos Lichtman, Carl P Malm, Maïmouna N Mbaye, Marie A Muhimpundu, Beatrice M Mwagomba, Kibachio Joseph Mwangi, Mohit Nair, Simon P Niyonsenga, Benson Njuguna, Obiageli L O Okafor, Oluwakemi Okunade, Paul H Park, Sonak D Pastakia, Chelsea Pekny, Ahmed Reja, Charles N Rotimi, Samuel Rwunganira, David Sando, Gabriela Sarriera, Anshuman Sharma, Assa Sidibe, Elias S Siraj, Azhra S Syed, Kristien Van Acker, Mahmoud Werfalli
No abstract text is available yet for this article.
July 5, 2017: Lancet Diabetes & Endocrinology
https://www.readbyqxmd.com/read/28594741/characterization-and-optimal-management-of-high-risk-pancreatic-anastomoses-during-pancreatoduodenectomy
#18
Brett L Ecker, Matthew T McMillan, Horacio J Asbun, Chad G Ball, Claudio Bassi, Joal D Beane, Stephen W Behrman, Adam C Berger, Euan J Dickson, Mark Bloomston, Mark P Callery, John D Christein, Elijah Dixon, Jeffrey A Drebin, Carlos Fernandez-Del Castillo, William E Fisher, Zhi Ven Fong, Ericka Haverick, Robert H Hollis, Michael G House, Steven J Hughes, Nigel B Jamieson, Ammar A Javed, Tara S Kent, Stacy J Kowalsky, John W Kunstman, Giuseppe Malleo, Katherine E Poruk, Ronald R Salem, Carl R Schmidt, Kevin Soares, John A Stauffer, Vicente Valero, Lavanniya K P Velu, Amarra A Watkins, Christopher L Wolfgang, Amer H Zureikat, Charles M Vollmer
OBJECTIVE: The aim of this study was to identify the optimal fistula mitigation strategy following pancreaticoduodenectomy. BACKGROUND: The utility of technical strategies to prevent clinically relevant postoperative pancreatic fistula (CR-POPF) following pancreatoduodenectomy (PD) may vary by the circumstances of the anastomosis. The Fistula Risk Score (FRS) identifies a distinct high-risk cohort (FRS 7 to 10) that demonstrates substantially worse clinical outcomes...
April 2018: Annals of Surgery
https://www.readbyqxmd.com/read/28408176/using-the-nsqip-pancreatic-demonstration-project-to%C3%A2-derive-a-modified-fistula-risk-score-for-preoperative-risk-stratification-in-patients-undergoing-pancreaticoduodenectomy
#19
Olga Kantor, Mark S Talamonti, Henry A Pitt, Charles M Vollmer, Taylor S Riall, Bruce L Hall, Chi-Hsiung Wang, Marshall S Baker
BACKGROUND: The Fistula Risk Score (FRS) is a clinical tool developed from single-institutional data using primarily intraoperative factors to characterize the risk of clinically relevant pancreatic fistula (CR-POPF) after pancreaticoduodenectomy. We developed a modified FRS based on objective, nationally accrued data that is more readily determined before resection. STUDY DESIGN: The 2012 NSQIP Pancreatic Demonstration Project (PDP) was used to identify 1,731 pancreaticoduodenectomy resections over 14 months (2011 to 2012)...
May 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28317658/minimally-invasive-pancreatoduodenectomy
#20
REVIEW
Michael L Kendrick, Jony van Hilst, Ugo Boggi, Thijs de Rooij, R Matthew Walsh, Herbert J Zeh, Steven J Hughes, Yoshiharu Nakamura, Charles M Vollmer, David A Kooby, Horacio J Asbun
BACKGROUND: Minimally invasive pancreatoduodenectomy (MIPD) is increasingly performed with several institutional series and comparative studies reported. The aim was to conduct an assessment of the best-evidence and expert opinion on the current status and future challenges of MIPD. METHODS: A systematic review of the literature was performed and best-evidence presented at a State-of-the-Art conference on Minimally Invasive Pancreatic Resection. Expert panel discussion and audience response activity was used to assess perceived value and future direction...
March 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
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