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https://www.readbyqxmd.com/read/28933693/structural-inhibition-of-dynamin-mediated-membrane-fission-by-endophilin
#1
Annika Hohendahl, Nathaniel Talledge, Valentina Galli, Peter S Shen, Frédéric Humbert, Pietro De Camilli, Adam Frost, Aurélien Roux
Dynamin, which mediates membrane fission during endocytosis, binds endophilin and other members of the Bin-Amphiphysin-Rvs (BAR) protein family. How endophilin influences endocytic membrane fission is still unclear. Here we show that dynamin-mediated membrane fission is potently inhibited in vitro when an excess of endophilin co-assembles with dynamin around membrane tubules. We further show by electron microscopy that endophilin intercalates between turns of the dynamin helix and impairs fission by preventing trans interactions between dynamin rungs that are thought to play critical roles in membrane constriction...
September 21, 2017: ELife
https://www.readbyqxmd.com/read/28933045/a-prospective-single-arm-trial-of-modified-long-biliopancreatic-and-short-alimentary-limbs-roux-en-y-gastric-bypass-in-type-2-diabetes-patients-with-mild-obesity
#2
Abdon José Murad, Ricardo Vitor Cohen, Eudes Paiva de Godoy, Christian Lamar Scheibe, Giuliano Peixoto Campelo, Almino Cardoso Ramos, Roclides Castro de Lima, Luís Eduardo Veras Pinto, Daniel Coelho, Hamilton Belo França Costa, Ígor Marreiros Pereira Pinto, Tiago Pereira, Francisco Raúl Santos Teófilo, José Aparecido Valadão
BACKGROUND: Type-2 diabetes (T2D) patients with body mass index (BMI) below 35 kg/m(2) carry lower remission rates than severely obese T2D individuals submitted to "standard limb lengths" Roux-en-Y gastric bypass (RYGB). Mild-obese patients appear to have more severe forms of T2D, where the mechanisms of glycemic control after a standard-RYGB may be insufficient. The elongation of the biliopancreatic limb may lead to greater stimulation of the distal intestine, alterations in bile acids and intestinal microbiota, among other mechanisms, leading to better metabolic outcomes...
September 20, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28933032/the-effect-of-dumping-on-weight-loss-in-conversion-of-failed-restrictive-surgery-a-cross-sectional-pilot-study
#3
Ruth Van Looveren, Yannick Mandeville, Pieter Logghe, Katrien Vandendriessche, Xander Verbeke, Patrick Vuylsteke, Paul Pattyn, Bart Smet
PURPOSE: Dumping is currently seen as a negative side effect of Roux-en-Y gastric bypass (RYGB). However, it may help patients to comply with their prescribed diet. In this study, we assess the role of dumping on weight loss in patients who have undergone conversion of failed restrictive surgery into RYGB. METHODS: An analysis was performed of 100 consecutive patients who underwent revisional RYGB (rRYGB) between 2006 and 2011 due to inadequate weight loss or band intolerance after laparoscopic adjustable gastric banding (LAGB)...
September 21, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28932645/intratumor-heterogeneity-of-immune-checkpoints-in-primary-renal-cell-cancer-focus-on-hla-g-ilt2-ilt4
#4
Nathalie Rouas-Freiss, Joel LeMaoult, Jérôme Verine, Diana Tronik-Le Roux, Stéphane Culine, Christophe Hennequin, François Desgrandchamps, Edgardo D Carosella
The establishment and maintenance of anti-tumor immune responses are the objectives of cancer immunotherapy. Despite recent promising advances, the effectiveness of these approaches has been limited by the multiple immunosuppressive mechanisms developed by tumors (checkpoint). The aim of the present study was to demonstrate intratumor heterogeneity at the levels of immune escape strategies and tumor-host relationships. We focused on well-known checkpoints such as PD1/PDL1 and on a new checkpoint involving HLA-G and its receptors ILT2/ILT4...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28930514/weight-and-metabolic-outcomes-12-years-after-gastric-bypass
#5
Ted D Adams, Lance E Davidson, Sheldon E Litwin, Jaewhan Kim, Ronette L Kolotkin, M Nazeem Nanjee, Jonathan M Gutierrez, Sara J Frogley, Anna R Ibele, Eliot A Brinton, Paul N Hopkins, Rodrick McKinlay, Steven C Simper, Steven C Hunt
BACKGROUND: Few long-term or controlled studies of bariatric surgery have been conducted to date. We report the 12-year follow-up results of an observational, prospective study of Roux-en-Y gastric bypass that was conducted in the United States. METHODS: A total of 1156 patients with severe obesity comprised three groups: 418 patients who sought and underwent Roux-en-Y gastric bypass (surgery group), 417 patients who sought but did not undergo surgery (primarily for insurance reasons) (nonsurgery group 1), and 321 patients who did not seek surgery (nonsurgery group 2)...
September 21, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28929425/medium-term-outcomes-after-reversal-of-roux-en-y-gastric-bypass
#6
Gustavo Andrés Arman, J Himpens, R Bolckmans, D Van Compernolle, R Vilallonga, G Leman
BACKGROUND: Roux-en-Y gastric bypass (RYGB) can be reversed into normal anatomy (NA) or into sleeve gastrectomy (NASG) to address undesired side effects. Concomitant hiatal hernia repair (HHR) may be required. Before reversal, some patients benefit from placement of a gastrostomy, mostly to predict the result of recreating the native anatomy. METHODS: Retrospective study on mid-term effects of RYGB reversal to NA and NASG, including clinical and weight evolution, surgical complications, and incidence of gastro-esophageal reflux (GERD)...
September 19, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28929278/effect-and-mechanisms-of-diabetes-resolution-according-to-the-range-of-gastric-resection-and-the-length-of-anastomosis-in-animal-models-implication-for-gastric-cancer-surgery-in-patients-with-diabetes-mellitus
#7
Yeon-Ju Huh, Young-Gil Son, Tae-Han Kim, Ji-Ho Park, Tae-Jung Oh, Boram Choi, Jimin Min, Young Min Cho, Han-Kwang Yang, Hyuk-Joon Lee
BACKGROUND: To examine the effect and mechanism of Roux-en-Y gastric bypass (RYGB) on the improvement of diabetes according to the length of anastomosis and the gastric pouch volume in an animal model. METHODS: Glucose intolerance was induced with a high-fat diet for 3 months in Sprague-Dawley rats. The animals were subjected to conventional RYGB (cRYGB; 5% gastric pouch with 15-cm Roux limb, 40-cm biliopancreatic limb; n = 9), short-limb RYGB (sRYGB; 5%, 8, 4 cm; n = 9), fundus-sparing RYGB (fRYGB; 30%, 8, 4 cm; n = 9), or sham operation (n = 9)...
September 19, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28929218/percutaneous-gastric-remnant-gastrostomy-following-roux-en-y-gastric-bypass-surgery-a-single-tertiary-center-s-13-year-experience
#8
Shehbaz Hasam Shaikh, Justin Jay Stenz, David W McVinnie, James J Morrison, Todd Getzen, Arthur M Carlin, Farhaan R Mir
PURPOSE: The purpose of the study is to evaluate the indications, techniques, and outcomes for percutaneous gastrostomy placement in the gastric remnant following Roux-en-Y gastric bypass (RYGB) in bariatric patients. MATERIALS AND METHODS: Retrospective chart review and summary statistical analysis was performed on all RYGB patients that underwent attempted percutaneous remnant gastrostomy placement at our institution between April 2003 and November 2016. RESULTS: A total of 38 patients post-RYGB who underwent gastric remnant gastrostomy placement were identified, 32 women and 6 men, in which a total of 41 procedures were attempted...
September 19, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28928326/a-delayed-acute-complication-of-bariatric-surgery-gastric-remnant-haemorrhagic-ulcer-after-roux-en-y-gastric-bypass
#9
Stefan Patrascu, Carmen Balague Ponz, Sonia Fernandez Ananin, Eduardo M Targarona Soler
Acute gastric remnant bleeding is an exceptionally rare complication when it occurs long after bariatric surgery. We present the case of a patient with a bleeding ulcer of the excluded stomach (i.e., the remnant), occurring 7 years after Roux-en-Y gastric bypass (RYGB) for morbid obesity. A computed tomography scan managed to locate the active bleeding source in the gastric remnant. During emergency laparotomy, a bleeding ulcer of the fundic region of the excluded stomach was identified. Total resection of the remnant was performed, with good post-operative recovery...
September 20, 2017: Journal of Minimal Access Surgery
https://www.readbyqxmd.com/read/28927985/the-efficacy-of-resection-of-intrahepatic-bile-duct-stenosis-causing-membrane-or-septum-for-preventing-hepatolithiasis-after-choledochal-cyst-excision
#10
Yujiro Tanaka, Takahisa Tainaka, Wataru Sumida, Chiyoe Shirota, Akinari Hinoki, Naruhiko Murase, Kazuo Oshima, Ryo Shirotsuki, Kosuke Chiba, Hiroo Uchida
BACKGROUND/PURPOSE: We previously found that many patients who developed hepatolithiasis after choledochal cyst excisions had intrahepatic bile duct stenosis (IHBDS). In 1992, we started resection of the membrane or septum which was found at the site of IHBDS during choledochal cyst excisions. Since intrahepatic stones usually take years to form, the efficacy of this procedure has not been proved. METHODS: The records of patients who had IHBDS-causing membrane or septum and underwent choledochal cyst excision with Roux-Y hepaticojejunostomy between January 1979 and December 2006 were retrospectively analyzed...
September 5, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28927690/forensic-drug-intelligence-and-the-rise-of-cryptomarkets-part-i-studying-the-australian-virtual-market
#11
Julian Broséus, Marie Morelato, Mark Tahtouh, Claude Roux
Analysing and understanding cryptomarkets is essential to become proactive in the fight against the illicit drug trade. Such a research seeks to combine a diversity of indicators related to the virtual (darknet markets) and physical (the traditional "offline" market) aspects of the illicit drug trade to provide information on the distribution and consumption as well as to assess similarities/differences between the virtual and physical markets. This study analysed data that had previously been collected on cryptomarkets from December 2013 to March 2015...
September 12, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28927291/differentially-conserved-transcriptomic-response-to-adversity-related-to-self-rated-health-in-the-multi-ethnic-study-of-atherosclerosis
#12
Pia Riestra, Samson Y Gebreab, Yongmei Liu, Ana V Diez Roux, Rumana R Khan, Amadou Gaye, Ruihua Xu, S K Davis
Self-rated health (SRH) is considered a strong indicator of well-being and clinical health status and has been linked to inflammatory markers. The objective of this work was to examine how self-rated physical health (SRPH) and mental health (SRMH) influence the immune system through the regulation of a stress-related gene expression profile known as the 'conserved transcriptional response to adversity' (CTRA), which involves the up-regulation of pro-inflammatory genes and down-regulation of genes involved in type I interferon (IFN) response and antibody synthesis...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28926836/percutaneous-biliary-balloon-dilation-impact-of-an-institutional-three-session-protocol-on-patients-with-benign-anastomotic-strictures-of-hepatojejunostomy
#13
Matias E Czerwonko, Pablo Huespe, Oscar Mazza, Martin de Santibanes, Rodrigo Sanchez-Claria, Juan Pekolj, Miguel Ciardullo, Eduardo de Santibanes, Sung Ho Hyon
BACKGROUND: Percutaneous biliary balloon dilation (PBBD) stands as a safe, useful, and inexpensive treatment procedure performed on patients with benign anastomotic stricture of Roux-en-Y hepatojejunostomy (BASH). However, the optimal mode of application is still under discussion. METHODS: A retrospective cohort study was conducted including patients admitted between 2008 and 2015 with diagnosis of BASH. Patients were divided into 2 groups: group I (n = 22), included patients treated after the implementation of an institutional protocol of 3 PBBD sessions within a fixed time interval and group II (n = 24) consisted of our historical control of patients who underwent one or 2 dilation sessions...
September 20, 2017: Digestive Surgery
https://www.readbyqxmd.com/read/28926171/biliary-reconstructive-techniques-and-associated-anatomic-variants-in-adult-living-donor-liver-transplants-the-a2all-experience
#14
Talia B Baker, Michael A Zimmerman, Nathan P Goodrich, Benjamin Samstein, Elizabeth A Pomfret, James J Pomposelli, Brenda W Gillespie, Carl L Berg, Jean C Emond, Robert M Merion
INTRODUCTION: Living donor liver transplantation (LDLT) is a technically demanding endeavor, requiring command of the complex anatomy of partial liver grafts. We examined the influence of anatomic variation and reconstruction technique on surgical outcomes and graft survival in the nine-center A2ALL Study. METHODS: Data from 272 adult LDLT recipients (2011-2015) included details on anatomic characteristics and types of intraoperative biliary reconstruction. Associations were tested between reconstruction technique and complications, which included first biliary complication ([BC]; leak, stricture, or biloma) and first vascular complication (hepatic artery thrombosis [HAT] or portal vein thrombosis [PVT])...
September 19, 2017: Liver Transplantation
https://www.readbyqxmd.com/read/28924918/adipocyte-size-and-leptin-receptor-expression-in-human-subcutaneous-adipose-tissue-after-roux-en-y-gastric-bypass
#15
Martha Tamez, Victoria Ramos-Barragan, Patricia Mendoza-Lorenzo, Pablo Arrieta-Joffe, Sergio López-Martínez, Martín E Rojano-Rodríguez, Mucio Moreno-Portillo, María E Frigolet
The molecular mechanisms implicated in pronounced weight loss and metabolic benefits after bariatric surgery are still unknown. Adipocyte phenotype and metabolism have not been entirely explored. However, some features of adipocyte function have been studied, such as adipocyte size and inflammation, which are both reduced after bariatric surgery. Adipocyte fat metabolism, which is partly regulated by leptin, is likely modified, since adipocyte area is decreased. Here, we show that leptin receptor expression is increased, while adipocyte size is decreased 8 months after Roux-en-Y gastric bypass...
September 18, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28921894/macrophage-area-content-and-phenotype-in-hepatic-and-adipose-tissue-in-patients-with-obesity-undergoing-roux-en-y-gastric-bypass
#16
Marianne D Kristensen, Michael T Lund, Merethe Hansen, Steen S Poulsen, Thorkil Ploug, Flemming Dela, Jørn W Helge, Clara Prats
OBJECTIVE: To investigate hepatic and adipose tissue macrophage content in subjects with obesity and the role of adipose tissue macrophages in weight loss-induced improved insulin sensitivity (IS). METHODS: A cross-sectional and a longitudinal study were combined to investigate the role of macrophages in subcutaneous (SAT) and visceral (VAT) adipose tissue and the liver in obesity-induced impaired IS and improvements with weight loss. Macrophage markers (CD68, CD163, and CD206) in SAT, VAT, and the liver from patients with obesity were investigated...
September 18, 2017: Obesity
https://www.readbyqxmd.com/read/28921422/high-incidence-of-secondary-hyperparathyroidism-in-bariatric-patients-comparing-different-procedures
#17
Jih-Hua Wei, Wei-Jei Lee, Keong Chong, Yi-Chih Lee, Shu-Chun Chen, Po-Hsun Huang, Shing-Jong Lin
BACKGROUND: Bariatric surgery is an effective therapy for morbid obesity but may reduce calcium absorption and significantly decrease the bone mineral density. This study examined the prevalence of secondary hyperparathyroidism (SHPT) in obese subjects during follow-up after different bariatric surgeries. We investigated predictors of SHPT. METHODS: We enrolled 1470 obese subjects undergoing bariatric/metabolic surgery with at least 1-year follow-up, including 322 patients undergoing Roux-en-Y gastric bypass (RYGB), 695 undergoing single anastomosis (mini-) gastric bypass (SAGB), 93 undergoing laparoscopic adjustable gastric banding (LAGB), and 360 undergoing sleeve gastrectomy (SG)...
September 18, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28919979/reversal-of-fibrosis-in-patients-with-nonalcoholic-steatohepatosis-after-gastric-bypass-surgery
#18
Brian M Parker, Jiang Wu, Jing You, David S Barnes, Lisa Yerian, John P Kirwan, Philip R Schauer, Daniel I Sessler
BACKGROUND: Roux-en-Y gastric bypass (RYGB) improves the pathophysiology that contributes to obesity-related nonalcoholic steatohepatitis (NASH). Whether obesity-related fibrosis improves is unclear. We hypothesized that RYGB reverses NASH and fibrosis, and indocyanine green (ICG) clearance provides a sensitive measure for detecting asymptomatic fatty liver disease. METHODS: One hundred six obese adults scheduled for RYGB had preoperative liver function assessed using standard tests and ICG clearance and core liver biopsies obtained during RYGB...
2017: BMC Obesity
https://www.readbyqxmd.com/read/28919390/-histoplasma-capsulatum-bone-and-joint-infection
#19
M Gaume, L Marie-Hardy, F Larousserie, M Lavielle, C Roux, P Leclerc, A Paugam, D Archambeau, L Eyrolle, R Gauzit, O Lortholary, P Anract, D Salmon
No abstract text is available yet for this article.
September 14, 2017: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/28919184/clinical-significance-of-failure-to-lose-weight-10-years-after-roux-en-y-gastric-bypass
#20
Robert B Hawkins, J Hunter Mehaffey, Timothy L McMurry, Jennifer Kirby, Steven K Malin, Bruce Schirmer, Peter T Hallowell
BACKGROUND: Although Roux-en-Y gastric bypass (RYGB) induces short-term weight loss and co-morbidity amelioration, long-term data suggest that a subset of patients return to their preoperative body mass index (BMI). OBJECTIVES: To identify the clinical implications of 10-year weight loss failure after RYGB. SETTING: An academic teaching hospital. METHODS: Adults undergoing RYGB (1985-2004) were included in this study (n = 1087)...
August 9, 2017: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
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