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https://www.readbyqxmd.com/read/28738623/analysis-of-illegal-peptide-drugs-via-hilic-dad-ms
#1
Steven Janvier, Evelien De Sutter, Evelien Wynendaele, Bart De Spiegeleer, Celine Vanhee, Eric Deconinck
Biopharmaceuticals have established themselves as highly efficient medicines, and are still one of the fastest growing parts of the health-product industry. Unfortunately, the introduction of these promising new drugs went hand in hand with the creation of a black market for illegal and counterfeit biotechnology drugs. Particularly popular are the lyophilised peptides with a molecular weight of less than 5kDa. Most of them are meant for subcutaneous injection and are easily accessible via the internet. In recent years, different methods based on reversed phase liquid chromatography have been developed to detect and quantify these peptides...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738576/development-of-ph-responsive-polymer-and-citrate-aqueous-two-phase-system-for-extractive-bioconversion-of-cefprozil
#2
Jialing Chen, Zhaoyang Ding, Hongxia Pan, Xuejun Cao
A pH-responsive aqueous two-phase system (pH-ATPS) has been developed by sodium citrate and a recyclable pH-responsive polymer PADB6.8 that can response to the change of pH values. Phase separation mechanism is studied through Low field-NMR. All variables affecting the phase separation are evaluated. Phase characteristics (viscosity, density, interfacial tension) and phase separation kinetic are studied for understanding of separation process and operational parameters in applications. This pH-ATPS has the characters of low interfacial tension, high recovery leading efficient mass transfer and low cost...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738552/nutrients-removal-and-bacterial-community-structure-for-low-c-n-municipal-wastewater-using-a-modified-anaerobic-anoxic-oxic-ma2-o-process-in-north-china
#3
Shihua Zhang, Zhijia Huang, Shujian Lu, Jun Zheng, Xinxi Zhang
A modified anaerobic/anoxic/oxic (mA2/O) process based on utilizing the internal carbon source and adding polypropylene carriers was operated for 90d to investigate the nutrients removal performance and bacterial community. This system exhibited a stable and efficient performance, particularly, in removing the NH4(+)-N and total phosphorus. The results of high-throughput sequencing showed that the 13 dominant genera containing Pseudomonas, Comamonas, Arcobacter, Nitrobacteria, Nitrosospira, Nitrosomonas, Bacteroides, Flavobacterium, Rhizobium, Acinetobacter, Zoogloea, Rhodocyclus and Moraxella were shared by five zones, inferring that they were the essential players in treating low C/N (below 5...
July 12, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28738550/employing-microbial-electrochemical-technology-driven-electro-fenton-oxidation-for-the-removal-of-recalcitrant-organics-from-sanitary-landfill-leachate
#4
Muhammad Hassan, Narcis Pous, Bing Xie, Jesús Colprim, M Dolors Balaguer, Sebastia Puig
The feasibility of employing Microbial Electrochemical Technology (MET)-driven electro-Fenton oxidation was evaluated as a post-treatment of an anammox system treating sanitary landfill leachate. Two different MET configuration systems were operated using effluent from partial nitrification-anammox reactor treating mature leachate. In spite of the low organic matter biodegradability of the anammox's effluent (2401±562mgCODL(-1); 237±57mgBOD5L(-1)), the technology was capable to reach COD removal rates of 1077-1244mgL(-1)d(-1) with concomitant renewable electricity production (43...
July 8, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28738483/-outcome-analysis-of-patients-undergoing-percutaneous-coronary-intervention-with-or-without-prior-coronary-artery-bypass-grafting-operation
#5
Y Song, J J Xu, X F Tang, H H Wang, R Liu, P Jiang, L Jiang, L J Gao, Y Zhang, L Song, L J Xu, X Y Zhao, Z Gao, J Chen, R L Gao, S B Qiao, Y J Yang, B Xu, J Q Yuan
Objective: To investigate the impact of previous coronary artery bypass grafting(CABG) on long-term outcomes in patients undergoing percutaneous coronary intervention(PCI). Methods: A total of 10 724 consecutive coronary heart disease patients undergoing PCI between January and December 2013 in Fuwai hospital were prospectively included in this research. According to CABG history, the patients were divided into CABG group(437 cases) and without CABG group(10 287 cases). The patients were followed up for 2 years...
July 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28738454/-development-of-markov-models-for-economics-evaluation-of-strategies-on-hepatitis-b-vaccination-and-population-based-antiviral-treatment-in-china
#6
P C Yang, S X Zhang, P P Sun, Y L Cai, Y Lin, Y H Zou
Objective: To construct the Markov models to reflect the reality of prevention and treatment interventions against hepatitis B virus (HBV) infection, simulate the natural history of HBV infection in different age groups and provide evidence for the economics evaluations of hepatitis B vaccination and population-based antiviral treatment in China. Methods: According to the theory and techniques of Markov chain, the Markov models of Chinese HBV epidemic were developed based on the national data and related literature both at home and abroad, including the settings of Markov model states, allowable transitions and initial and transition probabilities...
July 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28738437/long-term-outcomes-and-quality-of-life-in-patients-after-soave-pull-through-operation-for-hirschsprung-s-disease-an-observational-retrospective-study
#7
Viet Quoc Tran, Tania Mahler, Martine Dassonville, Dinh Quang Truong, Annie Robert, Philippe Goyens, Henri Steyaert
No abstract text is available yet for this article.
July 24, 2017: European Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28738391/updated-palate-surgery-for-obstructive-sleep-apnea
#8
Hsueh-Yu Li
Initially described in 1981, uvulopalatopharyngoplasty was the first surgical procedure specially designed at the palatal level for snoring and obstructive sleep apnea (OSA). To date, palatal surgery remains the most commonly used surgery for OSA. The advancement of this surgery over the past 30 years has been a process of evolution in concepts, examination, and technique to increase safety and effectiveness in the treatment of OSA. Concept changes have emerged in the disease etiology, purpose of surgery, treatment priorities, staging of operations, integration therapy, and surgical endpoints...
2017: Advances in Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28738294/oral-mucosa-dose-parameters-predicting-grade-%C3%A2-3-acute-toxicity-in-locally-advanced-nasopharyngeal-carcinoma-patients-treated-with-concurrent-intensity-modulated-radiation-therapy-and-chemotherapy-an-independent-validation-study-comparing-oral-cavity-versus
#9
Kaixin Li, Ling Yang, Qiang-Ying Hu, Xiao-Zhong Chen, Ming Chen, Yuanyuan Chen
PURPOSE: To determine whether volumes based on the contours of the mucosal surface instead of the oral cavity can be used to predict grade ≥3 acute oral mucosa toxicity in patients with locally advanced nasopharyngeal carcinoma (LANPC) treated with concurrent intensity-modulated radiation therapy (IMRT) and chemotherapy. METHODS AND MATERIALS: A standardized method for the oral cavity (oral cavity contours, OCC) and a novel method for the mucosal surface (mucosal surface contours, MSC) were developed for the oral mucosa and prospectively applied to the radiation treatment plans of 92 patients treated with concurrent IMRT and chemotherapy for LANPC...
July 21, 2017: Translational Oncology
https://www.readbyqxmd.com/read/28738237/a-case-report-of-unexpected-pathology-within-an-incarcerated-ventral-hernia
#10
Erica D Kane, Katharine R Bittner, Michelle Bennett, John R Romanelli, Neal E Seymour, Jacqueline J Wu
INTRODUCTION: Incidence of hernial appendicitis is 0.008%, most frequently within inguinal and femoral hernias. Up to 2.5% of appendectomy patients are found to have Crohn's disease. Elucidating the etiology of inflammation is essential for directing management. PRESENTATION OF CASE: A 51-year-old female with achondroplastic dwarfism, multiple cesarean sections, and subsequent massive incisional hernia, presented with ruptured appendicitis within her incarcerated hernia...
July 8, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28738231/sliding-strip-microfluidic-device-enables-elisa-on-paper
#11
Mohit S Verma, Maria-Nefeli Tsaloglou, Tyler Sisley, Dionysios Christodouleas, Austin Chen, Jonathan Milette, George M Whitesides
This article describes a 3D microfluidic paper-based analytical device that can be used to conduct an enzyme-linked immunosorbent assay (ELISA). The device comprises two parts: a sliding strip (which contains the active sensing area) and a structure surrounding the sliding strip (which holds stored reagents-buffers, antibodies, and enzymatic substrate-and distributes fluid). Running an ELISA involves adding sample (e.g. blood) and water, moving the sliding strip at scheduled times, and analyzing the resulting color in the sensing area visually or using a flatbed scanner...
July 19, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28738219/finding-features-figuratively
#12
Sarah H Solomon, Sharon L Thompson-Schill
Object concepts refer to unique clusters of properties that can be selectively activated or inhibited depending on what information is currently relevant. This conceptual "stretching" enables limitless new meanings to be generated, and figurative language provides a useful framework in which to study this conceptual flexibility. Here we probe the cognitive and neural mechanisms underlying the comprehension of novel metaphors as a means of understanding the conceptual flexibility inherent to language processing more generally...
July 21, 2017: Brain and Language
https://www.readbyqxmd.com/read/28738192/maxillary-reconstruction-using-submental-artery-island-flap-and-sagittal-mandibular-ramus-coronoid-process-graft-pedicled-with-temporalis-muscle
#13
W H Wang, Z R Zou, B Xu, W Q Wang, S Y Shen
PURPOSE: The purpose of this study is to describe maxillary reconstruction using the submental artery island flap and the sagittal mandibular ramus and coronoid process graft pedicled with the temporalis muscle through the modified lateral lip and submandibular approach. MATERIALS AND METHODS: From May 2013 to September 2016, 11 patients with maxillary defects secondary to maxillary cancer ablation who underwent maxillary reconstruction using a submental artery island flap and a sagittal mandibular ramus and coronoid process graft pedicled with the temporalis muscle through the modified lateral lip and submandibular approach were enrolled in this prospective study...
June 29, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28738159/light-and-electrically-induced-phase-segregation-and-its-impact-on-the-stability-of-quadruple-cation-high-bandgap-perovskite-solar-cells
#14
The Duong, Hemant Kumar Mulmudi, Yiliang Wu, Xiao Fu, Heping Shen, Jun Peng, Nandi Wu, Hieu T Nguyen, Daniel MacDonald, Mark N Lockrey, Thomas P White, Klaus Weber, Kylie R Catchpole
Perovskite material with a bandgap of 1.7 eV - 1.8 eV is highly desirable for the top cell in a tandem configuration with a lower bandgap bottom cell, such as a silicon cell. This can be achieved by alloying iodide and bromide anions, but light-induced phase segregation phenomena is often observed in perovskite films of this kind, with implications for solar cell efficiency. Here we investigate light-induced phase segregation inside quadruple cation perovskite material in a complete cell structure, and find that the magnitude of this phenomenon is dependent on the operating condition of the solar cell...
July 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28738126/comparing-plasma-phospho-tau-total-tau-and-phospho-tau-total-tau-ratio-as-acute-and-chronic-traumatic-brain-injury-biomarkers
#15
Richard Rubenstein, Binggong Chang, John K Yue, Allen Chiu, Ethan A Winkler, Ava M Puccio, Ramon Diaz-Arrastia, Esther L Yuh, Pratik Mukherjee, Alex B Valadka, Wayne A Gordon, David O Okonkwo, Peter Davies, Sanjeev Agarwal, Fan Lin, George Sarkis, Hamad Yadikar, Zhihui Yang, Geoffrey T Manley, Kevin K W Wang, Shelly R Cooper, Kristen Dams-O'Connor, Allison J Borrasso, Tomoo Inoue, Andrew I R Maas, David K Menon, David M Schnyer, Mary J Vassar
Importance: Annually in the United States, at least 3.5 million people seek medical attention for traumatic brain injury (TBI). The development of therapies for TBI is limited by the absence of diagnostic and prognostic biomarkers. Microtubule-associated protein tau is an axonal phosphoprotein. To date, the presence of the hypophosphorylated tau protein (P-tau) in plasma from patients with acute TBI and chronic TBI has not been investigated. Objective: To examine the associations between plasma P-tau and total-tau (T-tau) levels and injury presence, severity, type of pathoanatomic lesion (neuroimaging), and patient outcomes in acute and chronic TBI...
July 24, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28738091/the-second-window-icg-technique-demonstrates-a-broad-plateau-period-for-near-infrared-fluorescence-tumor-contrast-in-glioblastoma
#16
Ryan Zeh, Saad Sheikh, Leilei Xia, John Pierce, Andrew Newton, Jarrod Predina, Steve Cho, MacLean Nasrallah, Sunil Singhal, Jay Dorsey, John Y K Lee
INTRODUCTION: Fluorescence-guided surgery has emerged as a powerful tool to detect, localize and resect tumors in the operative setting. Our laboratory has pioneered a novel way to administer an FDA-approved near-infrared (NIR) contrast agent to help surgeons with this task. This technique, coined Second Window ICG, exploits the natural permeability of tumor vasculature and its poor clearance to deliver high doses of indocyanine green (ICG) to tumors. This technique differs substantially from established ICG video angiography techniques that visualize ICG within minutes of injection...
2017: PloS One
https://www.readbyqxmd.com/read/28738074/adversity-emotion-recognition-and-empathic-concern-in-high-risk-youth
#17
Jodi A Quas, Kelli L Dickerson, Richard Matthew, Connor Harron, Catherine M Quas
Little is known about how emotion recognition and empathy jointly operate in youth growing up in contexts defined by persistent adversity. We investigated whether adversity exposure in two groups of youth was associated with reduced empathy and whether deficits in emotion recognition mediated this association. Foster, rural poor, and comparison youth from Swaziland, Africa identified emotional expressions and rated their empathic concern for characters depicted in images showing positive, ambiguous, and negative scenes...
2017: PloS One
https://www.readbyqxmd.com/read/28738057/the-fatty-liver-index-as-a-predictor-of-incident-chronic-kidney-disease-in-a-10-year-prospective-cohort-study
#18
Ji Hye Huh, Jang Young Kim, Eunhee Choi, Jae Seok Kim, Yoosoo Chang, Ki-Chul Sung
BACKGROUND: Although non-alcoholic fatty liver disease (NAFLD) is considered to be associated with chronic kidney disease (CKD), long-term follow up data is lacking. We investigated whether NAFLD, as determined by the fatty liver index (FLI), could predict incident CKD in 10-year prospective cohort study. We also assessed the clinical utility of FLI to predict the development of CKD. METHODS: 6,238 adults aged 40 to 69 years without baseline CKD from the Ansan-Ansung cohort were examined...
2017: PloS One
https://www.readbyqxmd.com/read/28737965/comparison-of-three-competitive-immunoassays-for-measurement-of-tsh-receptor-antibodies-in-patients-with-graves-disease
#19
Sara Doroudian, Inge Bülow Pedersen, Cindy Soendersoe Knudsen, Aase Handberg, Stine Linding Andersen
Thyrotropin (TSH) receptor antibodies (TRAb) mediate the hyperthyroidism of Graves' disease (GD). The aim of the study was to compare the diagnostic performance and assay agreement between three immunoassays for the measurement of TRAb in patients with newly diagnosed GD. TRAb was measured with three different assays [H-TRAb (BRAHMS Diagnostica), M22-Man (RSR Limited) and M22-Aut (Roche Diagnostics)] in 387 participants who were recruited from two Danish population-based studies and diagnosed with GD (n = 101), multinodular toxic goitre (n = 88), primary autoimmune hypothyroidism (n = 100) or included as controls (n = 98)...
July 24, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28737964/laparoscopic-duhamel-procedure-with-ex-anal-rectal-transection-for-right-sided-hirschsprung-s-disease
#20
Xi Zhang, Li Yang, Shao-Tao Tang, Guo-Qing Cao, Shuai Li, Meng Jiang, Meng Xiong, De-Hua Yang, Xiao-Pan Chang, Kang Li, Ya-Zhen Ma
BACKGROUND: Increased defecation frequency and soiling are common complications of surgery for right-sided Hirschsprung's disease (HD). Though the laparoscopic Duhamel procedure is a favorable option in right-sided HD, the conventional laparoscopic technique is time consuming and has complications that are associated with the reservoir. In this study, we described a modified laparoscopic Duhamel technique with ex-anal rectal transection combined with the Deloyer's procedure for right-sided HD...
July 24, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
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