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https://www.readbyqxmd.com/read/29342159/prediction-of-novel-target-genes-and-pathways-involved-in-bevacizumab-resistant-colorectal-cancer
#1
Precious Takondwa Makondi, Chia-Hwa Lee, Chien-Yu Huang, Chi-Ming Chu, Yu-Jia Chang, Po-Li Wei
Bevacizumab combined with cytotoxic chemotherapy is the backbone of metastatic colorectal cancer (mCRC) therapy; however, its treatment efficacy is hampered by therapeutic resistance. Therefore, understanding the mechanisms underlying bevacizumab resistance is crucial to increasing the therapeutic efficacy of bevacizumab. The Gene Expression Omnibus (GEO) database (dataset, GSE86525) was used to identify the key genes and pathways involved in bevacizumab-resistant mCRC. The GEO2R web tool was used to identify differentially expressed genes (DEGs)...
2018: PloS One
https://www.readbyqxmd.com/read/29340935/endoscopic-treatments-of-gerd
#2
REVIEW
Carol Rouphael, Ruthvik Padival, Madhusudhan R Sanaka, Prashanthi N Thota
OPINION STATEMENT: PURPOSE OF REVIEW: Endoscopic therapies for gastroesophageal reflux disease (GERD) are minimally invasive techniques which fill the gap between the medical therapy with proton pump inhibitors (PPIs) and surgical fundoplication. The main endoscopic therapies currently available in the USA are transoral incisionless fundoplication (TIF) using EsophyX device or less commonly, Medigus Ultrasonic Surgical Endostapler, and radiofrequency energy delivery to lower esophageal sphincter using Stretta device...
January 16, 2018: Current Treatment Options in Gastroenterology
https://www.readbyqxmd.com/read/29340828/hiatal-hernia-recurrence-following-magnetic-sphincter-augmentation-and-posterior-cruroplasty-intermediate-term-outcomes
#3
Kais A Rona, James M Tatum, Joerg Zehetner, Katrin Schwameis, Carol Chow, Kamran Samakar, Adrian Dobrowolsky, Caitlin C Houghton, Nikolai Bildzukewicz, John C Lipham
BACKGROUND: We have previously reported short-term outcomes after hiatal hernia repair (HHR) at the time of magnetic sphincter augmentation (MSA) for gastroesophageal reflux disease (GERD). Here we report intermediate-term outcomes and hernia recurrence rate after concomitant MSA and HHR. METHODS: This is a retrospective cohort study of patients who underwent repair of a hiatal hernia 3 cm or larger at the time of MSA implantation between May 2009 and December 2015...
January 16, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29339127/the-basophil-activation-test-can-be-of-value-for-diagnosing-immediate-allergic-reactions-to%C3%A2-omeprazole
#4
Jose J Laguna, Gador Bogas, Maria Salas, Cristobalina Mayorga, Javier Dionicio, Rosario Gonzalez-Mendiola, Adriana Ariza, Ruben Fernández-Santamaría, Isabel Olazabal, Inmaculada Doña, Tahia D Fernandez, Maria J Torres
BACKGROUND: Proton pump inhibitors (PPIs) are commonly used to treat gastrointestinal diseases. Incidence of hypersensitivity reactions to PPIs has risen, likely because of increased consumption. Their diagnosis is difficult, with skin tests (STs) presenting low sensitivity, making it necessary to perform drug provocation tests (DPTs). The value of in vitro tests for the diagnosis of immediate reaction to PPI is unclear. OBJECTIVE: To analyze the diagnostic value of the basophil activation test (BAT) in a group of patients diagnosed with immediate allergy to omeprazole...
January 12, 2018: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/29339107/influenza-a-virus-polymerase-an-attractive-target-for-next-generation-anti-influenza-therapeutics
#5
REVIEW
Zhongxia Zhou, Tao Liu, Jian Zhang, Peng Zhan, Xinyong Liu
The influenza RNA-dependent RNA polymerase (RdRP) is conserved among different types of influenza virus, playing an important part in transcription and replication. In this regard, influenza RdRP is an attractive target for novel anti-influenza drug discovery. Herein, we will introduce the structural and functional information of influenza polymerase; and an overview of inhibitors targeting the PA endonuclease and PB2 cap-binding site is provided, along with the approaches utilized for identification of these inhibitors...
January 12, 2018: Drug Discovery Today
https://www.readbyqxmd.com/read/29334187/surveying-the-landscape-of-optogenetic-methods-for-detection-of-protein-protein-interactions
#6
REVIEW
Matthew D Wiens, Robert E Campbell
Mapping the protein-protein interaction (PPi) landscape is of critical importance to furthering our understanding how cells and organisms function. Optogenetic methods, that is, approaches that utilize genetically encoded fluorophores or fluorogenic enzyme reactions, uniquely enable the visualization of biochemical phenomena in live cells with high spatial and temporal accuracy. Applying optogenetic methods to the detection of PPis requires the engineering of protein-based systems in which an optical signal undergoes a substantial change when the two proteins of interest interact...
January 15, 2018: Wiley Interdisciplinary Reviews. Systems Biology and Medicine
https://www.readbyqxmd.com/read/29331945/risk-factors-for-gastric-cancer-is-it-time-to-discard-ppis
#7
Lucrezia Laterza, Franco Scaldaferri, Antonio Gasbarrini
No abstract text is available yet for this article.
January 13, 2018: Gut
https://www.readbyqxmd.com/read/29328377/feature-genes-in-metastatic-breast-cancer-identified-by-metade-and-svm-classifier-methods
#8
Youlin Tuo, Ning An, Ming Zhang
The aim of the present study was to investigate the feature genes in metastatic breast cancer samples. A total of 5 expression profiles of metastatic breast cancer samples were downloaded from the Gene Expression Omnibus database, which were then analyzed using the MetaQC and MetaDE packages in R language. The feature genes between metastasis and non‑metastasis samples were screened under the threshold of P<0.05. Based on the protein‑protein interactions (PPIs) in the Biological General Repository for Interaction Datasets, Human Protein Reference Database and Biomolecular Interaction Network Database, the PPI network of the feature genes was constructed...
January 9, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29327263/proton-pump-inhibitors-increase-the-susceptibility-of-mice-to-oral-infection-with-enteropathogenic-bacteria
#9
Eiichiro Yasutomi, Namiko Hoshi, Soichiro Adachi, Takafumi Otsuka, Lingling Kong, Yuna Ku, Haruka Yamairi, Jun Inoue, Tsukasa Ishida, Daisuke Watanabe, Makoto Ooi, Masaru Yoshida, Tomoya Tsukimi, Shinji Fukuda, Takeshi Azuma
BACKGROUND AND AIMS: Proton pump inhibitors (PPIs) are among the most frequently prescribed medications. Side effects including an increased risk of intestinal infections have been reported. It is assumed that PPIs can increase susceptibility to enteropathogens; however, the underlying mechanisms are unknown. Here in this study, we explored whether Lansoprazole (Laz), one of the PPIs, increases the susceptibility to enteropathogens, and further investigated the mechanism of it. METHODS: Mice were administered Laz intraperitoneally once daily and orally infected with Citrobacter rodentium (C...
January 11, 2018: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29326019/isolation-of-a-peptide-containing-d-amino-acid-residues-that-inhibits-the-%C3%AE-helix-mediated-p53-mdm2-interaction-from-a-one-bead-one-compound-library
#10
Jumpei Morimoto, Yuki Hosono, Shinsuke Sando
α-Helix-mediated protein-protein interactions (PPIs) are important targets in biological research and drug development. Peptides containing d-amino acid residues are attractive molecules for inhibiting α-helix-mediated PPIs because of their wide surface area and high protease resistance. In this study, a peptide library was constructed using a one-bead one-compound format designed to isolate left-handed α-helical peptides, which are promising molecules as inhibitors of α-helix-mediated PPIs. Screening of the library against an α-helix-mediated PPI between MDM2 and p53 yielded an inhibitor of the PPI...
January 2, 2018: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29324308/antacids-side-effect-hyperuricaemia-could-be-alleviated-by-long-term-aerobic-exercise-via-accelerating-atp-turnover-rate
#11
Shu Yuan, Zhong-Wei Zhang, Zi-Lin Li
Hyperuricemia is the term for an abnormally high serum uric acid level. Many factors contribute to hyperuricemia, however no definite correlation between proton pump inhibitors (PPIs) and hyperuricemia has been reported before. Physical exercise also decreases serum uric acid levels. However, the detailed biochemical-regulatory mechanisms remain unknown. Here we found that adenylate deaminase activities are much higher in hyperuricemia patients than in the healthy people. Therefore, the patients have higher levels of adenosine metabolites hypoxanthine and uric acid...
January 8, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29316555/intestinal-dysbiosis-secondary-to-proton-pump-inhibitor-use
#12
Yuji Naito, Kaori Kashiwagi, Tomohisa Takagi, Akira Andoh, Ryo Inoue
BACKGROUND: Gut dysbiosis associated with the use of proton-pump inhibitors (PPIs) has been found to lead to the occurrence of infectious and inflammatory adverse events. A longitudinal observational cohort study has demonstrated the heightened risk of death associated with PPI use. SUMMARY: We evaluated meta-analyses to determine the association between PPI use and infectious and inflammatory diseases. Meta-analyses showed that PPI use is a potential risk for the development of enteric infections caused by Clostridium difficile, as well as small intestinal bacterial overgrowth, spontaneous bacterial peritonitis, community-acquired pneumonia, hepatic encephalopathy, and adverse outcomes in inflammatory bowel disease...
January 6, 2018: Digestion
https://www.readbyqxmd.com/read/29305934/efficacy-of-laparoscopic-nissen-fundoplication-vs-transoral-incisionless-fundoplication-or-proton-pump-inhibitors-in-patients-with-gastroesophageal-reflux-disease-a-systematic-review-and-network-meta-analysis
#13
Joel Richter, Ambuj Kumar, Seth Lipka, Branko Miladinovic, Vic Velanovich
BACKGROUND & AIMS: The effects of transoral incisionless fundoplication (TIF) and laparoscopic Nissen fundoplication (LNF) have been compared with those of proton pump inhibitors (PPIs) or a sham procedure in patients with gastroesophageal reflux disease (GERD), but there has been no direct comparison of TIF vs LNF. We performed a systematic review and network meta-analysis of randomized controlled trials to compare the relative efficacies of TIF vs LNF in patients with GERD. METHODS: We searched publication databases and conference abstracts through May 10, 2017 for randomized controlled trials that compared the efficacy of TIF or LNF with that of a sham procedure or PPIs in patients with GERD...
January 3, 2018: Gastroenterology
https://www.readbyqxmd.com/read/29290909/influence-of-proton-pump-inhibitors-in-the-development-of-spontaneous-bacterial-peritonitis
#14
Suelen A S Miozzo, Jorge A John, Marcelo C Appel-da-Silva, Isabella A Dossin, Cristiane V Tovo, Angelo A Mattos
AIM: To investigate whether the use of proton pump inhibitors (PPIs) increases the incidence of spontaneous bacterial peritonitis (SBP) in patients with cirrhosis and ascites. METHODS: An historical cohort study was carried out in cirrhotic outpatients with ascites followed in a specialized clinic at a tertiary hospital in Southern Brazil. Patient charts were reviewed to collect information on the variables of interest as the use of PPIs. Primary outcome was defined as development of SBP during the study period...
December 18, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/29288053/the-histidine-phosphocarrier-protein-hpr-binds-to-the-highly-thermostable-regulator-of-sigma-d-protein-rsd-and-its-isolated-helical-fragments
#15
José L Neira, Felipe Hornos, Concetta Cozza, Ana Cámara-Artigas, Olga Abián, Adrián Velázquez-Campoy
The phosphotransferase system (PTS) controls the preferential use of sugars in bacteria and it is also involved in other processes, such as chemotaxis. It is formed by a protein cascade in which the first two proteins are general (namely, EI and HPr) and the others are sugar-specific permeases. The Rsd protein binds specifically to the RNA polymerase (RNAP) σ70 factor. We first characterized the conformational stability of Escherichia coli Rsd. And second, we delineated the binding regions of Streptomyces coelicolor, HPrsc, and E...
December 26, 2017: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29284366/pepsi%C3%A2-or-coke%C3%A2-influence-of-acid-on-dasatinib-absorption
#16
Randall W Knoebel, Richard A Larson
Dasatinib is a second generation ABL kinase inhibitor used in the management of chronic myeloid leukemia or Philadelphia chromosome positive acute lymphoblastic leukemia (Ph+ ALL). Dasatinib's bioavailability is highly dependent on gastric pH. When proton-pump inhibitors (PPIs) are co-administered with dasatinib, absorption is significantly reduced. Cola intake at the time of drug administration has been demonstrated to lead to relevant increases in the bioavailability for other acid labile drugs during PPI treatment...
January 1, 2017: Journal of Oncology Pharmacy Practice
https://www.readbyqxmd.com/read/29283249/live-cell-visualization-of-multiple-protein-protein-interactions-with-bifc-rainbow
#17
Sheng Wang, Miao Ding, Boxin Xue, Yingping Hou, Yujie Sun
As one of the most powerful tools to visualize PPIs in living cells, bimolecular fluorescence complementation (BiFC) has gained great advancement during the recent years, including deep tissue imaging with far-red or near-infrared fluorescent proteins or super-resolution imaging with photochromic fluorescent proteins. However, little progress has been made towards simultaneous detection and visualization of multiple PPIs in the same cell, mainly due to the spectral crosstalk. In this report, we developed novel BiFC assays based on large-Stokes-shift fluorescent proteins (LSS-FPs) to detect and visualize multiple PPIs in living cells...
December 28, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/29282636/vonoprazan-a-novel-and-potent-alternative-in-the%C3%A2-treatment-of-acid-related-diseases
#18
REVIEW
Xiaoxiao Yang, Yueyue Li, Yiyuan Sun, Mingming Zhang, Chuanguo Guo, Iqtida Ahmed Mirza, Yan-Qing Li
Although proton pump inhibitors (PPIs) have been used widely, acid-related diseases are still associated with a huge burden on the health care system. Recently, the efficacy and safety of a new acid suppressant named vonoprazan in the treatment of acid-related diseases have been evaluated by a series of studies. As a novel potassium-competitive acid blocker, vonoprazan may provide reversible acid suppression by preventing K+ from binding to gastric H+/K+-ATPase. It has been clinically used for the short-term treatment of gastroesophageal reflux disease (GERD), peptic ulcer disease and Helicobacter pylori (H...
December 27, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29282565/hawkrank-a-new-scoring-function-for-protein-protein-docking-based-on-weighted-energy-terms
#19
Ting Feng, Fu Chen, Yu Kang, Huiyong Sun, Hui Liu, Dan Li, Feng Zhu, Tingjun Hou
Deciphering the structural determinants of protein-protein interactions (PPIs) is essential to gain a deep understanding of many important biological functions in the living cells. Computational approaches for the structural modeling of PPIs, such as protein-protein docking, are quite needed to complement existing experimental techniques. The reliability of a protein-protein docking method is dependent on the ability of the scoring function to accurately distinguish the near-native binding structures from a huge number of decoys...
December 28, 2017: Journal of Cheminformatics
https://www.readbyqxmd.com/read/29278655/eosinophilic-esophagitis-in-japan-focus-on-response-to-acid-suppressive-therapy
#20
REVIEW
Norihisa Ishimura, Yoshikazu Kinoshita
Eosinophilic esophagitis (EoE) is a chronic inflammatory condition characterized by esophageal dysfunction and dense eosinophilic infiltration of esophageal epithelium. According to clinical consensus and guidelines published in 2011, esophageal eosinophilia was classified into 2 entities based on response to proton pump inhibitor (PPI) administration; EoE and PPI-responsive esophageal eosinophilia (PPI-REE). We have performed a series of investigations to determine whether EoE is actually different from PPI-REE...
December 26, 2017: Journal of Gastroenterology and Hepatology
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