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Michael Mccullagh, David Douce, Els Van Hoeck, Séverine Goscinny
A method using Ion Mobility Mass Spectrometry (IM-MS) and collision induced dissociation (CID) coupled with micro flow Ultra High Performance Chromatography (UPLC-IM-MS) has been developed to screen for steviol glycosides. Travelling wave ion mobility was used to determine rotationally averaged collision cross sections in nitrogen buffer gas (TWCCSN2). To illustrate the evolving applicability of ion mobility screening, the analytical approach was initially developed and applied to the analysis of a steviol/steviol glycoside spiked chocolate spread extract...
March 14, 2018: Analytical Chemistry
Susan E Hagen, Kun Liu, Yafei Jin, Lolita Piersimoni, Philip C Andrews, Hollis D Showalter
Two novel cyclic quaternary amine crosslinking probes are synthesized for structural mass spectrometry of protein complexes in solution and for analysis of protein interactions in organellar and whole cell extracts. Each exhibits high aqueous solubility, excellent protein crosslinking efficiencies, low collision induced dissociation (CID) energy fragmentation efficiencies, high stoichiometries of reaction, increased charges of crosslinked peptide ions, and maintenance of overall surface charge balance of crosslinked proteins...
March 14, 2018: Organic & Biomolecular Chemistry
Alejandro José García Ferreira, Aida Ortega Alonso, Julia Cobos Rodríguez, Paula Bardón de Tena, Miguel Calderón Cid, Alberto Manuel García García, María Dolores García Escaño, Ramiro Alcántara Benitez, Encarnacíon Clavijo Frutos, Miren García-Cortés, Raúl Andrade
In 2016, an outbreak of hepatitis A was identified in the Malaga province among patients with specific epidemiological characteristics, which were predominantly males. This is a report of 51 subjects with acute hepatitis A and a mean age of 35.7 years, 90% were male and 55% of cases were men who had had sex with other men within the last two months. Half of them required hospitalization for significant coagulopathy at diagnosis and no cases progressed to fulminant failure or encephalopathy. Four patients had ascites at the time of diagnosis...
March 12, 2018: Revista Española de Enfermedades Digestivas
Joseph Arthur, Kimberson Tanco, Minjeong Park, Ali Haider, Courtney Maligi, Shalini Dalal, Syed M A Naqvi, Diane Liu, Eduardo Bruera
BACKGROUND: There is currently no universally accepted outcome measure in cancer pain management. The personalized pain goal (PPG) has been shown to be a relevant outcome measure. We examined its use in routine outpatient practice and compared it with the clinical important difference (CID, ≥2 points or 30%), a pain outcome measure frequently used in several clinical studies. METHODS: Initial and follow up clinical information of outpatients with advanced cancer pain were retrospectively reviewed...
March 8, 2018: Journal of Pain and Symptom Management
Thomas Sersté, Alexia Cornillie, Hassane Njimi, Marco Pavesi, Vicente Arroyo, Antonella Putignano, Laura Weichselbaum, Pierre Deltenre, Delphine Degré, Eric Trépo, Christophe Moreno, Thierry Gustot
BACKGROUND & AIMS: A better identification of factors predicting death is needed in alcoholic hepatitis. Acute-on-chronic liver failure (ACLF) occurs during the course of liver disease and can be identified when AH is diagnosed (prevalent ACLF, pACLF) or during follow-up (incidental ACLF, iACLF). This study analyzed the impact of ACLF on outcomes in AH and the role of infection in the onset of ACLF and death. METHODS: Patients admitted from July, 2006 to July, 2015 suffering from biopsy-proven severe (s)AH with a Maddrey discriminant function (mDF) ≥32 were included...
March 7, 2018: Journal of Hepatology
Ashwini Dolle, Narasimhappagari Jagadeesh, Suman Bhaumik, Sunita Prakash, Himansu S Biswal, Konkallu Hanumae Gowd
RATIONALE: The modes of cleavages of lanthionine/methyllanthionine bridges under electron transfer dissociation (ETD) was investigated using synthetic and natural lantipeptides. Knowledge on the mass spectrometric fragmentation of lanthionine/methyllanthionine bridges may assist in the development of analytical methods for rapid discovery of new lantibiotics. Present study strengthens the advantage of ETD in the characterization of posttranslational modifications of peptides and proteins...
March 8, 2018: Rapid Communications in Mass Spectrometry: RCM
Shihua Zhang, Liang Zhang, Yijun Wang, Jian Yang, Mingzhi Liao, Shoudong Bi, Zhongwen Xie, Chi-Tang Ho, Xiaochun Wan
Tea is one of the most popular non-alcoholic beverages consumed worldwide. Numerous bioactive constituents of tea were confirmed to possess healthy benefits via the mechanisms of regulating gene expressions or protein activities. However, a complete interacting profile between tea bioactive compounds (TBCs) and their target genes is lacking, which put an obstacle in the study of healthy function of tea. To fill this gap, we developed a database of target genes of TBCs (TBC2target, based on a pharmacophore mapping approach...
2018: Frontiers in Plant Science
Juan Alberto Paz-Solarte, Marisa Hernández-Garfella, Amalia Rueda-Cid, Cristina Campos-Fernández, Javier Calvo-Catala
No abstract text is available yet for this article.
March 5, 2018: Reumatología Clinica
Paula Martins, Cid Sergio Ferreira, José Renan Cunha-Melo
The aim of this study was to determine the esophageal transit time in control individuals and in chagasic patients with or without megaesophagus.A total of 148 patients were allocated in 6 groups according to serological diagnostic of Chagas disease and the degree of esophageal dilatation: A, control healthy individuals (n = 34, 22.9%); B, indeterminate form (n = 23, 15.5%); C, megaesophagus I (n = 37, 25.0%); D, megaesophagus II (n = 19, 12.8%); E, megaesophagus III (n = 21, 14.2%); and F, megaesophagus IV (n = 14, 9...
March 2018: Medicine (Baltimore)
Jean-François Rontani, Claude Aubert, Simon T Belt
RATIONALE: 3,9,13-trimethyl-6-(1,5-dimethylhexyl)-tetradecan-1,2-diol and 2,8,12-trimethyl-5-(1,5-dimethylhexyl)-tridecanoic acid appear to be produced during the bacterial metabolism of IP25 , a highly branched isoprenoid lipid often employed for past Arctic sea ice reconstruction. Characterization and quantification of these metabolites in sediments are essential to determine if bacterial degradation may exert a significant influence on IP25 -based palaeo sea ice reconstructions. METHODS: EIMS fragmentation pathways of 3,9,13-trimethyl-6-(1,5-dimethylhexyl)-tetradecan-1,2-diol and 2,8,12-trimethyl-5-(1,5-dimethylhexyl)-tridecanoic acid TMS derivatives were investigated...
March 6, 2018: Rapid Communications in Mass Spectrometry: RCM
David J Harvey, Gemma E Seabright, Snezana Vasiljevic, Max Crispin, Weston B Struwe
Extracted arrival time distributions of negative ion CID-derived fragments produced prior to traveling-wave ion mobility separation were evaluated for their ability to provide structural information on N-linked glycans. Fragmentation of high-mannose glycans released from several glycoproteins, including those from viral sources, provided over 50 fragments, many of which gave unique collisional cross-sections and provided additional information used to assign structural isomers. For example, cross-ring fragments arising from cleavage of the reducing terminal GlcNAc residue on Man8 GlcNAc2 isomers have unique collision cross-sections enabling isomers to be differentiated in mixtures...
March 5, 2018: Journal of the American Society for Mass Spectrometry
Belén Alvarez-Alvarez, Charigan Abou Jokh Casas, Jose María Garcia Acuña, Belén Cid Alvarez, Rosa María Agra Bermejo, Alberto Cordero Fort, Moisés Rodríguez Mañero, Francisco Gude Sampedro, José R González-Juanatey
No abstract text is available yet for this article.
February 28, 2018: International Journal of Cardiology
Brenna S Fullerton, Cristine S Velazco, Charles R Hong, Alexandra N Carey, Tom Jaksic
PURPOSE: Severe combined immunodeficiency (SCID) screening by T-cell receptor excision circles (TREC) has been part of Massachusetts routine newborn screening since 2009. Tetratricopeptide repeat domain 7A gene (TTC7A) mutations responsible for hereditary multiple intestinal atresia with combined immunodeficiency (MIA-CID) were also recently identified. We reviewed newborn SCID screening among infants with intestinal failure and correlated results with patient characteristics and outcomes...
January 2018: JPEN. Journal of Parenteral and Enteral Nutrition
I Esteban, M Vilaró, E Adrover, N Angulo, E Carrasco, N Gadea, A Sánchez, T Ocaña, G Llort, R Jover, J Cubiella, S Servitja, M Herráiz, L Cid, S Martínez, M J Oruezábal-Moreno, I Garau, S Khorrami, A Herreros de Tejada, R Morales, J M Cano, R Serrano, M H López-Ceballos, S González-Santiago, M J Juan-Fita, C Alonso-Cerezo, A Casas, B Graña-Suarez, A Teulé, E Alba, A Antón, C Guillén-Ponce, A B Sánchez-Heras, J E Alés-Martínez, J Brunet, F Balaguer, J Balmaña
OBJECTIVE: Patients' psychological reactions to multi-gene cancer panel testing might differ compared with the single-gene testing reactions due to the complexity and uncertainty associated with the different possible results. Understanding patients' preferences and psychological impact of multi-gene panel testing is important to adapt the genetic counselling model. METHODS: One hundred and eighty-seven unrelated patients with clinical suspicion of hereditary cancer undergoing a 25-gene panel test completed questionnaires after pre-test genetic counseling and at one week, three months and twelve months after results to elicit their preferences regarding results disclosure and to measure their cancer worry and testing-specific distress and uncertainty...
March 2, 2018: Psycho-oncology
Noemi Eiro, Lucía González, Anxo Martínez-Ordoñez, Belen Fernandez-Garcia, Luis O González, Sandra Cid, Francisco Dominguez, Román Perez-Fernandez, Francisco J Vizoso
PURPOSE: It has been reported that stromal cell features may affect the clinical outcome of breast cancer patients. Cancer associated fibroblasts (CAFs) represent one of the most abundant cell types within the breast cancer stroma. Here, we aimed to explore the influence of CAFs on breast cancer gene expression, as well as on invasion and angiogenesis. METHODS: qRT-PCR was used to evaluate the expression of several cancer progression related genes (S100A4, TGFβ, FGF2, FGF7, PDGFA, PDGFB, VEGFA, IL-6, IL-8, uPA, MMP2, MMP9, MMP11 and TIMP1) in the human breast cancer-derived cell lines MCF-7 and MDA-MB-231, before and after co-culture with CAFs...
March 1, 2018: Cellular Oncology (Dordrecht)
Maarten L J Doornbos, Xuesong Wang, Sophie C Vermond, Luc Peeters, Laura Pérez-Benito, Andrés A Trabanco, Hilde Lavreysen, José María Cid, Laura H Heitman, Gary Tresadern, Adriaan P IJzerman
Covalent labelling of G protein-coupled receptors (GPCRs) by small molecules is a powerful approach to understand binding modes, mechanism of action, pharmacology and even facilitate structure elucidation. We report the first covalent positive allosteric modulator (PAM) for a class C GPCR, the mGlu2 receptor. Three putatively covalent mGlu2 PAMs were designed and synthesized. Pharmacological characterization identified 2 to bind the receptor covalently. Computational modelling combined with receptor mutagenesis revealed T7917...
March 1, 2018: Journal of Medicinal Chemistry
Joseph C Cappelleri, Li-Jung Tseng, Vera J Stecher, Stanley E Althof
AIM: To determine what constitutes a clinically important difference (CID) on the Erectile Dysfunction Inventory of Treatment Satisfaction (EDITS), an 11-item validated questionnaire assessing treatment satisfaction used in clinical trials for patients with erectile dysfunction (ED). METHODS: Erectile Dysfunction Inventory of Treatment Satisfaction data were evaluated from a double-blind, fixed-dose trial of 279 men aged 18-65 years with ED who were treated with sildenafil 50 or 100 mg or placebo...
March 1, 2018: International Journal of Clinical Practice
Cuimei Liu, Wei Jia, Yu Han, Zhendong Hua
Some methamphetamine (MA) crystals contain pharmaceutical impurities resulting from the co-ingredients of medicines used for extracting ephedrine/pseudoephedrine. These pharmaceutical impurities and their related byproducts can reflect the trends in precursor chemicals and manufacturing sources. In this research, one pharmaceutical impurity related byproduct was detected in several seized MA samples synthesized by I/P (Nagai, Moscow, or Hypo) method. Its structure was postulated through the analysis of fragment ions in EI mass spectrum...
March 1, 2018: Drug Testing and Analysis
Ranelle M Schaller-Duke, Mallikharjuna R Bogala, Carolyn J Cassady
Electron transfer dissociation (ETD) and collision-induced dissociation (CID) were used to investigate underivatized, metal-cationized oligosaccharides formed via electrospray ionization (ESI). Reducing and non-reducing sugars were studied including the tetrasaccharides maltotetraose, 3α,4β,3α-galactotetraose, stachyose, nystose, and a heptasaccharide, maltoheptaose. Univalent alkali, divalent alkaline earth, divalent and trivalent transition metal ions, and a boron group trivalent metal ion were adducted to the non-permethylated oligosaccharides...
February 28, 2018: Journal of the American Society for Mass Spectrometry
Fernanda P Cid, Fumito Maruyama, Kazunori Murase, Steffen P Graether, Giovanni Larama, Leon A Bravo, Milko A Jorquera
Genome analyses are being used to characterize plant growth-promoting (PGP) bacteria living in different plant compartiments. In this context, we have recently isolated bacteria from the phyllosphere of an Antarctic plant (Deschampsia antarctica) showing ice recrystallization inhibition (IRI), an activity related to the presence of antifreeze proteins (AFPs). In this study, the draft genomes of six phyllospheric bacteria showing IRI activity were sequenced and annotated according to their functional gene categories...
February 28, 2018: Extremophiles: Life Under Extreme Conditions
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