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Xin Li, Jing Huang, Matthew A Holden, Min Chen
Pep-1 is a cell-penetrating peptide that represents a powerful strategy for delivering large, hydrophilic therapeutic molecules into cells. Model membranes, such as lipid vesicles and planar bilayers, have been useful for investigating the direct translocation of cell-penetrating peptides. Here, we present a droplet interface bilayer-based approach to quantify pep-1-mediated β-galactosidase translocation. We found that β-galactosidase translocation is driven only by the negative transmembrane potential resulting from the asymmetric bilayers...
October 19, 2017: Analytical Chemistry
Francesca Talamini, Gianmarco Altoè, Barbara Carretti, Massimo Grassi
BACKGROUND: Several studies have found that musicians perform better than nonmusicians in memory tasks, but this is not always the case, and the strength of this apparent advantage is unknown. Here, we conducted a meta-analysis with the aim of clarifying whether musicians perform better than nonmusicians in memory tasks. METHODS: Education Source; PEP (WEB)-Psychoanalytic Electronic Publishing; Psychology and Behavioral Science (EBSCO); PsycINFO (Ovid); PubMed; ScienceDirect-AllBooks Content (Elsevier API); SCOPUS (Elsevier API); SocINDEX with Full Text (EBSCO) and Google Scholar were searched for eligible studies...
2017: PloS One
Jessica Bradshaw, Karen Bearss, Courtney McCracken, Tristram Smith, Cynthia Johnson, Luc Lecavalier, Naomi Swiezy, Lawrence Scahill
This study examines parent and child characteristics in young children with autism spectrum disorder and disruptive behavior who showed a positive response to a parent education program in a randomized clinical trial of parent training. Children with autism spectrum disorder (N = 180) were randomized to parent training (PT) or parent education program (PEP) for 6 months. Using the Clinical Global Impression-Improvement scale, masked independent evaluators rated positive response in 68.5% of children in PT compared to 39...
October 19, 2017: Journal of Clinical Child and Adolescent Psychology
Michelle L Colgrave, Keren Byrne, Crispin A Howitt
During brewing gluten proteins may be solubilised, modified, complexed, hydrolysed and/or precipitate. Gluten fragments that persist in conventional beers render them unsuitable for people with coeliac disease (CD) or gluten-intolerance. Barley-based beers crafted to remove gluten using proprietary precipitation and/or application of enzymes, e.g. prolyl endopeptidases (PEP) that degrade the proline-rich gluten molecules, are available commercially. Gluten measurement in fermented products remains controversial...
October 19, 2017: Journal of Agricultural and Food Chemistry
Chris Gehring, Ilona S Turek
The cyclic nucleotide monophosphates (cNMPs), and notably 3',5'-cyclic guanosine monophosphate (cGMP) and 3',5'-cyclic adenosine monophosphate (cAMP) are now accepted as key signaling molecules in many processes in plants including growth and differentiation, photosynthesis, and biotic and abiotic defense. At the single molecule level, we are now beginning to understand how cNMPs modify specific target molecules such as cyclic nucleotide-gated channels, while at the systems level, a recent study of the Arabidopsis cNMP interactome has identified novel target molecules with specific cNMP-binding domains...
2017: Frontiers in Plant Science
Yusong Lv, Gaoneng Shao, Jiehua Qiu, Guiai Jiao, Zhonghua Sheng, Lihong Xie, Yawen Wu, Shaoqing Tang, Xiangjin Wei, Peisong Hu, Robert Sharwood
The plastid-encoded RNA polymerase (PEP) plays an important role in the transcription machinery of mature chloroplasts, yet details of its function remain elusive in rice. Here, we identified a novel PEP-associated protein (PAP), WLP2, based on its two allelic white leaf and panicle mutants, wlp2s and wlp2w. The two mutants were albino lethal at high temperatures and showed decreased chlorophyll accumulation, abnormal chloroplast ultrastructure, and attenuated photosynthetic activity. Map-based cloning suggested that WLP2 encodes a putative pfkB-type carbohydrate kinase family protein, which is homologous to fructokinase-like 1 (AtFLN1) in Arabidopsis...
October 16, 2017: Journal of Experimental Botany
Balasaheb V Sonawane, Robert E Sharwood, Susanne von Caemmerer, Spencer M Whitney, Oula Ghannoum, Christine Raines
C4 photosynthesis evolved independently many times, resulting in multiple biochemical pathways; however, little is known about how these different pathways respond to temperature. We investigated the photosynthetic responses of eight C4 grasses belonging to three biochemical subtypes (NADP-ME, PEP-CK, and NAD-ME) to four leaf temperatures (18, 25, 32, and 40 °C). We also explored whether the biochemical subtype influences the thermal responses of (i) in vitro PEPC (Vpmax) and Rubisco (Vcmax) maximal activities, (ii) initial slope (IS) and CO2-saturated rate (CSR) derived from the A-Ci curves, and (iii) CO2 leakage out of the bundle sheath estimated from carbon isotope discrimination...
October 16, 2017: Journal of Experimental Botany
Yanyong Cao, Lifeng Wang, Liping Duan, Jingjing Li, Juan Ma, Shuna Xie, Lei Shi, Huiyong Li
The common smut of corn, caused by Ustilago maydis is a troublesome disease of maize. Early and accurate detection of U. maydis is essential for the disease management. In this study, primer set Pep-2 was selected for LAMP (loop-mediated isothermal amplification) from 12 sets of primers targeting three U. maydis effector genes See1, Pit2 and Pep1 according to primer screening. The optimal concentrations of Bst DNA polymerase and Mg(2+) as well as inner/outer primer ratio of the LAMP reaction system were screened by combining a single factor experiment and an orthogonal design arrangement...
October 17, 2017: Scientific Reports
Nsoki Phambu, Bashiyar Almarwani, Amjad Alwadai, Esther Nzuzi Phambu, Natalie Faciane, Carmel Marion, Anderson Sunda-Meya
The objective of this study is to measure and compare the effects of the cell penetrating peptide (CPP) Pep-1 and the antimicrobial peptide (AMP) combi-2 on vesicles of membranes mimicking Escherichia coli (E. coli). To characterize the effects of Pep-1 and combi-2 on E. coli membrane vesicles, a combination of five biophysical techniques was employed: fluorescence, infrared, scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC) techniques. Upon addition of E...
October 17, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
Anna Lange, Judith Becker, Dennis Schulze, Edern Cahoreau, Jean-Charles Portais, Stefan Haefner, Hartwig Schröder, Joanna Krawczyk, Oskar Zelder, Christoph Wittmann
Succinic acid is a platform chemical of recognized industrial value and accordingly faces a continuous challenge to enable manufacturing from most attractive raw materials. It is mainly produced from glucose, using microbial fermentation. Here, we explore and optimize succinate production from sucrose, a globally applied substrate in biotechnology, using the rumen bacterium Basfia succiniciproducens DD1. As basis of the strain optimization, the yet unknown sucrose metabolism of the microbe was studied, using (13)C metabolic flux analyses...
October 13, 2017: Metabolic Engineering
Zhihua Sun, Jian Li, Chengmin Ji, Junliang Sun, Maochun Hong, Junhua Luo
The incommensurate (IC) behaviors of ferroelectrics have been widely investigated in inorganic oxides as an exciting branch for aperiodic materials, whereas it still remains a great challenge to achieve such intriguing effects in organic systems. Here, we present that successive ordering of dynamic dipoles in an organic molecular ferroelectric, N-isopropylbenzylaminium trichloroacetate (1), enables unusual incommensurately modulated structures between its paraelectric phase (PEP) and ferroelectric phase (FEP)...
October 16, 2017: Journal of the American Chemical Society
Fei Lou, Ning Li, Yujiao Zhao, Shiting Guo, Zhiwen Wang, Tao Chen
Malic acid is a dicarboxylic acid that is widely used in food, pharmaceutical and chemical industries. We studied the effects of overexpression of carboxylation pathway genes and inactivation of malic enzymes on the aerobic production of malic acid. Over expression of phosphoenolpyruvate (PEP) carboxylase (ppc) generated strain E21, which increased malic acid production from 0.57 g/L to 3.83 g/L. Then pyc gene from Coryenbacterium glutamicus and pck gene from Actinobacillus succinogenes were overexpressed in E21 separately...
November 25, 2016: Sheng Wu Gong Cheng Xue Bao, Chinese Journal of Biotechnology
Enrica Federti, Alessandro Matte, Alessandra Ghigo, Immacolata Andolfo, Cimino James, Angela Siciliano, Christophe Leboeuf, Anne Janin, Francesco Manna, Soo Young Choi, Achille Iolascon, Elisabetta Beneduce, Davide Melisi, Dae Won Kim, Sonia Levi, Lucia De Franceschi
The data presented in this article are related to the research paper entitled "peroxiredoxin-2 plays a pivotal role as multimodal cytoprotector in the early phase of pulmonary hypertension" (Federti et al., 2017) [1]. Data show that the absence of peroxiredoxin-2 (Prx2) is associated with increased lung oxidation and pulmonary vascular endothelial dysfunction. Prx2(-/)(-) mice displayed activation of the redox-sensitive transcriptional factors, NF-kB and Nrf2, and increased expression of cytoprotective system such as heme-oxygenase-1 (HO-1)...
December 2017: Data in Brief
Robert J Arciuolo, Rachel R Jablonski, Jane R Zucker, Jennifer B Rosen
Background: Measles, mumps, and rubella vaccine (MMR) or immune globulin (IG) are routinely used for measles post-exposure prophylaxis (PEP). However, current literature on the effectiveness of measles PEP is limited and variable. Here, we examined the effectiveness of MMR and IG PEP among children exposed to measles during an outbreak in New York City (NYC) in 2013. Methods: Contacts were identified by the NYC Department of Health and Mental Hygiene between 13 March 2013 and 30 June 2013...
September 23, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
Javier A Cepeda, Steffanie A Strathdee, Jaime Arredondo, Maria L Mittal, Teresita Rocha, Mario Morales, Erika Clairgue, Eliane Bustamante, Daniela Abramovitz, Irina Artamonova, Arnulfo Bañuelos, Thomas Kerr, Carlos L Magis-Rodriguez, Leo Beletsky
BACKGROUND: Policing practices such as syringe confiscation and arrest can act as important social-structural drivers of HIV risk among people who inject drugs (PWID). However, police referral to treatment and other services may improve the health of PWID. Little is known about the role of modifiable attitudinal and knowledge factors in shaping officer behavior. Using baseline findings from a police education program (PEP), we assessed relationships between drug policy knowledge and attitudes towards public health interventions with self-reported syringe confiscation, drug arrest, and service referral among street-level police in Tijuana, Mexico...
October 10, 2017: International Journal on Drug Policy
Jiezhao Zhou, Meiling Chen, Ying Li, Fanglin Yu, Xiaohui Cheng, Yang Yang, Yan Liu, Xiangyang Xie, Zhiping Li, Hui Zhang, Xingguo Mei
Combination of metolazone (0.5 mg) and valsartan (80 mg) has been verified as a promising therapy treatment for hypertension. In order to facilitate to pharmacokinetic research, it needs a method for the simultaneously determination of metolazone and valsartan in biological samples. However, there are no relative reports so far. In order to facilitate to pharmacokinetic research, an on-line solid phase extraction coupled with liquid chromatography-tandem mass spectrometry method for the simultaneous determination of metolazone and valsartan in beagle dog plasma was developed and validated in this study...
October 2017: European Journal of Mass Spectrometry
Julia König, Savanne Holster, Maaike J Bruins, Robert J Brummer
The Aspergillus niger-derived prolyl endoprotease (AN-PEP) has previously been shown to degrade gluten in healthy subjects when added to an intragastrically infused meal. The current study investigated the efficacy of AN-PEP in a physiological meal setting. In this randomized placebo-controlled crossover study, 18 gluten-sensitive subjects consumed a porridge containing 0.5 g gluten together with two tablets either containing a high or low dose of AN-PEP, or placebo. Gastric and duodenal content was sampled over 180 minutes, and areas under the curve of gluten concentrations were calculated...
October 12, 2017: Scientific Reports
Ryan J Watson, Jessica N Fish, Aerielle Allen, Lisa Eaton
Black men who have sex with men (BMSM) are disproportionately affected by the human immunodeficiency virus (HIV) epidemic, yet we know little about how HIV-negative BMSM of different sexual orientations access HIV prevention strategies. Identity development, minority stress, and disclosure theories suggest that for people of different sexual orientations, disclosure of sexual identity may be related to health behaviors. We performed a latent class analysis on a sample of 650 BMSM (Mage = 33.78, SD = 11...
October 12, 2017: Journal of Sex Research
Yutthapong Sangnoi, Sunipa Chankaew, Sompong O-Thong
BACKGROUND AND OBJECTIVE: Toxic nitrogen compounds are one cause decreasing of shrimp production and water pollution. Indigenous Halomonas spp., isolated from Pacific white shrimp farm are benefitted for saline ammonium waste water treatment. This study aimed to isolate the heterotrophic-halophilic Halomonas spp. and investigate their ammonium removal efficiency. MATERIALS AND METHODS: Halomonas spp., were isolated by culturing of samples collected from shrimp farm into modified Pep-Beef-AOM medium...
2017: Pakistan Journal of Biological Sciences: PJBS
Nithya J Gogtay, Renuka Munshi, D H Ashwathnarayan, B J Mahendra, Vikas Kshirsagar, Bhagwat Gunale, Susan Moore, Peter Cheslock, Saket Thaker, Siddharth Deshpande, Sunil Karande, Dipti Kumbhar, Ravish H S, B R Harish, Sambhaji S Pisal, Rajeev Dhere, Varsha Parulekar, William C Blackwelder, Deborah C Molrine, Prasad S Kulkarni
Background: Lack of access to rabies immunoglobulin (RIG) contributes to the high rabies mortality. A recombinant human monoclonal antibody (SII RMAb) was tested in a post-exposure prophylaxis (PEP) regimen in comparison to a human RIG (HRIG)-containing PEP regimen. Methods: This was a Phase 2/3 randomized, single blind, non-inferiority study conducted in 200 participants with WHO category III suspected rabies exposures. On Day 0, participants received either SII RMAb or HRIG (1:1 ratio) into wounds and if required, intramuscularly (IM) along with five doses of rabies vaccine IM on Days 0, 3, 7, 14 and 28...
September 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
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