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https://www.readbyqxmd.com/read/29929211/a-novel-myb-transcription-factor-regulates-asa-synthesis-and-effects-cold-tolerance
#1
Caihua Xing, Yue Liu, Liangyi Zhao, Shaoling Zhang, Xiaosan Huang
Dehydroascorbate reductase (DHAR) plays an important role in stress responses, but the transcriptional regulation of DHAR in response to abiotic stress is still poorly understood. In this study, we isolated a novel R2R3-type MYB transcription factor from Pyrus betulaefolia by yeast one-hybrid screening, designated as PbrMYB5. PbrMYB5 was localized in the nucleus and could bind specifically to the promoter of PbrDHAR2. PbrMYB5 was greatly induced by cold and salt, but slightly by dehydration. Overexpression of PbrMYB5 in tobacco conferred enhanced tolerance to chilling stresses, whereas down-regulation of PbrMYB5 in Pyrus betulaefolia by virus-induced gene silencing (VIGS) resulted in elevated chilling sensitivity...
June 21, 2018: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29929203/a-history-of-concussion-does-not-lead-to-an-increase-in-ocular-near-point-of-convergence
#2
Paul van Donkelaar, Jill Dierijck, Alexander Wright, Jonathan Smirl
Ocular near point of convergence (NPC) has been shown to be sensitive to the effects of concussion and subconcussive impacts. To determine if NPC is also sensitive to a previous history of concussion, male contact-sport athletes either with (n=26) or without (n=16) a history of at least one previous concussion had their NPC assessed. The results showed that participants with a history of concussion displayed NPC values (9.4±1.6 cm) indistinguishable from those with no history of concussion (8.4±2.1 cm, t-test, p=0...
June 21, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29929200/methionine-sulfoxide-reductase-a-knockout-mice-show-progressive-hearing-loss-and-sensitivity-to-acoustic-trauma
#3
Safa Alqudah, Mark Chertoff, Dianne Durham, Jackob Moskovitz, Hinrich Staecker, Marcello Peppi
Methionine sulfoxide reductases (MsrA and MsrB) protect the biological activity of proteins from oxidative modifications to methionine residues and are important for protecting against the pathological effects of neurodegenerative diseases. In the current study, we characterized the auditory phenotype of the MsrA knockout mouse. Young MsrA knockout mice showed small high-frequency threshold elevations for auditory brainstem response and distortion product otoacoustic emission compared to those of wild-type mice, which progressively worsened in older MsrA knockout mice...
June 21, 2018: Audiology & Neuro-otology
https://www.readbyqxmd.com/read/29929181/setting-the-magic-angle-for-fast-magic-angle-spinning-probes
#4
Susanne Penzel, Albert A Smith, Matthias Ernst, Beat H Meier
Fast magic-angle spinning, coupled with 1 H detection is a powerful method to improve spectral resolution and signal to noise in solid-state NMR spectra. Commercial probes now provide spinning frequencies in excess of 100 kHz. Then, one has sufficient resolution in the 1 H dimension to directly detect protons, which have a gyromagnetic ratio approximately four times larger than 13 C spins. However, the gains in sensitivity can quickly be lost if the rotation angle is not set precisely. The most common method of magic-angle calibration is to optimize the number of rotary echoes, or sideband intensity, observed on a sample of KBr...
June 15, 2018: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/29929165/high-throughput-label-free-microcontact-printing-graphene-based-biosensor-for-valley-fever
#5
Shih-Ming Tsai, Tyler Goshia, Yen-Chang Chen, Agnes Kagiri, Angelo Sibal, Meng-Hsuen Chiu, Anand Gadre, Vincent Tung, Wei-Chun Chin
The highly prevalent and virulent disease in the Western Hemisphere Coccidioidomycosis, also known as Valley Fever, can cause serious illness such as severe pneumonia with respiratory failure. It can also take on a disseminated form where the infection spreads throughout the body. Thus, a serious impetus exists to develop effective detection of the disease that can also operate in a rapid and high-throughput fashion. Here, we report the assembly of a highly sensitive biosensor using reduced graphene oxide (rGO) with Coccidioides(cocci) antibodies as the target analytes...
June 18, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29929158/immobilized-free-miniaturized-electrochemical-sensing-system-for-pb-2-detection-based-on-dual-pb-2-dnazyme-assistant-feedback-amplification-strategy
#6
Wei Cai, Shunbi Xie, Jin Zhang, Dianyong Tang, Ying Tang
We presented a novel dual-DNAzyme feedback amplification (DDFA) strategy for Pb2+ detection based on a micropipette tip-based miniaturized homogeneous electrochemical device. The DDFA system involves two rolling circle amplification (RCA) processes in which two circular DNA templates (C1 and C2) have been designed with a Pb2+ -DNAzyme sequence (8-17 DNAzyme, anti-GR-5 DNAzyme) and an antisense sequence of G-quadruplex. And a linear DNA (L-DNA), which consists of a primer sequence and a Pb2+ -DNAzyme substrate sequence, could hybridize with C1 and C2 to form two DNA complexes...
June 8, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29929118/facile-synthesis-of-vanillin-based-novel-bischalcones-identifies-one-that-induces-apoptosis-and-displays-synergy-with-artemisinin-in-killing-chloroquine-resistant-plasmodium-falciparum
#7
Upendra K Sharma, Dinesh Mohanakrishnan, Nandini Sharma, Danish Equbal, Dinkar Sahal, Arun K Sinha
The inherent affinity of natural compounds for biological receptors has been comprehensively exploited with great success for the development of many drugs, including antimalarials. Here the natural flavoring compound vanillin has been used as an economical precursor for the synthesis of a series of novel bischalcones whose in vitro antiplasmodial activities have been evaluated against erythrocytic stages of Plasmodium falciparum. Bischalcones 9, 11 and 13 showed promising antiplasmodial activity {Chloroquine (CQ) sensitive Pf3D7 IC50 (μM): 2...
June 15, 2018: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29929115/matched-pair-86-y-90-y-labeled-bivalent-rgd-bombesin-antagonist-rgd-glu-do3a-6-ahx-rm2-as-a-potential-theranostic-agent-for-prostate-cancer
#8
Nilantha Bandara, Tamila J Stott Reynolds, Rebecca Schehr, Rajendra P Bandari, Philipp J Diebolder, Stephanie Krieger, Jingli Xu, Yubin Miao, Buck E Rogers, Charles J Smith
INTRODUCTION: In this study, we describe development of a true matched-pair theranostic agent that is able to target the αV β3 integrin and the gastrin releasing peptide receptor (GRPR). We herein describe methods to metallate and characterize the new conjugate and to validate its biological efficacy by in vitro and in vivo methods. METHODS: We have previously described the development of [RGD-Glu-6Ahx-RM2] (where RGD: Arg-Gly-Asp; Glu: glutamic acid; 6-Ahx: 6-amino hexanoic acid; RM2: (D-Phe-Gln-Trp-Ala-Val-Gly-His-Sta-Leu-NH2)) that has been conjugated to a DOTA (1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid) bifunctional chelating agent (BFCA) to afford [RGD-Glu-[DO3A]-6-Ahx-RM2] peptide...
June 8, 2018: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/29929089/impact-of-a-novel-environment-on-alcohol-induced-locomotor-activity-in-wistar-rats
#9
Fabiola Hernández-Vázquez, Cosette Reyes-Guzmán, Milagros Méndez
Clinical studies have shown a positive correlation between novelty-seeking behavior and the susceptibility to consume drugs of abuse. Although several animal studies have demonstrated this correlation with psychostimulants or morphine, studies with alcohol have shown conflicting results. The aim of this work was to investigate alcohol-induced motor effects in Wistar rats with different responses to novelty. Animals were classified as Low- (LR) or High-Responders (HR) to novelty, depending on their horizontal activity in an automated open field...
February 17, 2018: Alcohol
https://www.readbyqxmd.com/read/29929085/schizotypal-traits-and-their-relation-to-rejection-sensitivity-in-the-general-population-their-mediation-by-quality-of-life-agreeableness-and-neuroticism
#10
Preethi Premkumar, Juliana Onwumere, Lucy Betts, Fränze Kibowski, Elizabeth Kuipers
Schizotypal traits are a cluster of personality styles suggesting a potential liability for schizophrenia-spectrum disorders. Interpersonal schizotypal traits include cognitive disorganisation which consists of social anxiety, and introvertive anhedonia which consists of a lack of pleasure in social activities. Rejection sensitivity is evident all along this continuum. This study aimed to determine whether psychosocial quality of life (QOL), neuroticism and agreeableness mediates the relation between schizotypy and rejection sensitivity...
June 5, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29929071/evidence-based-logic-chains-demonstrate-multiple-impacts-of-trace-metals-on-ecosystem-services
#11
F Hayes, D J Spurgeon, S Lofts, L Jones
Trace metals can have far-reaching ecosystem impacts. In this study, we develop consistent and evidence-based logic chains to demonstrate the wider effects of trace metal contamination on a suite of ecosystem services. They demonstrate knock-on effects from an initial receptor that is sensitive to metal toxicity, along a cascade of impact, to final ecosystem services via alterations to multiple ecosystem processes. We developed logic chains to highlight two aspects of metal toxicity: for impacts of copper pollution in soil ecosystems, and for impacts of mercury in freshwaters...
June 18, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29929059/evaluation-of-forensic-genetics-findings-given-activity-level-propositions-a-review
#12
REVIEW
Duncan Taylor, Bas Kokshoorn, Alex Biedermann
The evaluation of results of forensic genetic analyses given activity level propositions is an emerging discipline in forensic genetics. Although it is a topic with a long history, it has never been considered to be such a critically important topic for the field, as today. With the increasing sensitivity of analysis techniques, and advances in data interpretation using probabilistic models ('probabilistic genotyping'), there is an increasing demand on forensic biologists to share specialised knowledge to help recipients of expert information address mode and timing of transfer and persistence of traces in court...
June 7, 2018: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/29929039/combination-of-the-fetal-urinary-metabolome-and-peptidome-for-the-prediction-of-postnatal-renal-outcome-in-fetuses-with-puv
#13
Bénédicte Buffin-Meyer, Julie Klein, Benjamin Breuil, Françoise Muller, Panagiotis Moulos, Marion Groussolles, Ourdia Bouali, Jean-Loup Bascands, Stéphane Decramer, Joost P Schanstra
Most of biomarker panels, extracted from single omics traits, still need improvement since they display a gray zone where prediction is uncertain. Here we verified whether a combination of omics traits, fetal urinary metabolites and peptides analyzed in the same sample, improved prediction of postnatal renal function in fetuses with posterior urethral valves (PUV) compared to individual omics traits. Using CE-MS, we explored the urinary metabolome of 13 PUV fetuses with end stage renal disease (ESRD) and 12 PUV fetuses without postnatal ESRD at 2 years postnatally...
June 18, 2018: Journal of Proteomics
https://www.readbyqxmd.com/read/29929038/proteomics-based-identification-of-hypoxia-sensitive-membrane-bound-proteins-in-rat-erythrocytes
#14
Svetlana V Sidorenko, Rustam H Ziganshin, Oksana G Luneva, Leonid I Deev, Natalya V Alekseeva, Georgy V Maksimov, Ryszard Grygorczyk, Sergei N Orlov
No abstract text is available yet for this article.
June 18, 2018: Journal of Proteomics
https://www.readbyqxmd.com/read/29929037/proteomic-characterization-of-six-taiwanese-snake-venoms-identification-of-species-specific-proteins-and-development-of-a-siscapa-mrm-assay-for-cobra-venom-factors
#15
Chien-Chun Liu, Chih-Chuan Lin, Yung-Chin Hsiao, Po-Jung Wang, Jau-Song Yu
Deinagkistrodon acutus, Trimeresurus stejnegeri, Protobothrops mucrosquamatus, Daboia russelii siamensis, Bungarus multicinctus and Naja atra are the six medically important venomous snake species in Taiwan. In this study, we characterized and compared their venom protein profiles using proteomic approaches. The major snake venom proteins were identified by GeLC-MS/MS and the total venom proteome was characterized by in-solution digestion coupled with LC-MS/MS. A total of 27-52 proteins, categorized into 23 protein families, were identified in each snake's venom...
June 18, 2018: Journal of Proteomics
https://www.readbyqxmd.com/read/29929030/comparative-utility-of-dynamic-and-static-imaging-in-the-management-of-lumbar-spondylolisthesis
#16
Vibhu Krishnan Viswanathan, Jeff Hatef, Sina Aghili, Amy Minnema, H Francis Farhadi
OBJECTIVE: Segmental instability is traditionally investigated with flexion and extension (F/E) X-rays. We sought to determine whether motion between upright and supine (U/S) views can serve as an alternative sensitive diagnostic tool that predicts similar outcomes. METHODS: Ambispective collection of data was performed for 222 consecutive patients that underwent transforaminal lumbar interbody fusion (TLIF). Patients were divided into either Group 1 (≥3 mm spondylolisthesis difference between F/E X-rays) or Group 2 (≥3 mm spondylolisthesis difference between U/S imaging and otherwise not meeting Group 1 criteria)...
June 18, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29929022/risk-factors-for-surgical-site-infection-following-operative-treatment-of-ankle-fractures-a-systematic-review-and-meta-analysis
#17
REVIEW
Jiashen Shao, Huixin Zhang, Bing Yin, Jia Li, Yanbin Zhu, Yingze Zhang
BACKGROUND: This study aims to quantitatively summarize risk factors associated with surgical site infection after open reduction and internal fixation of ankle fractures. METHODS: Relevant original studies were searched in Medline, Embase, China National Knowledge Infrastructure, Wanfang database and Cochrane central database (all through April 2018). Studies eligible had to meet the quality assessment criteria by Newcastle-Ottawa Scale and to evaluate the risk factors for surgical site infection after open reduction and internal fixation of ankle fractures...
June 18, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29929009/safety-immunogenicity-and-protection-of-a-h3n2-live-attenuated-influenza-vaccines-containing-wild-type-nucleoprotein-in-a-ferret-model
#18
Daniil A Korenkov, Karen L Laurie, Patrick C Reading, Louise A Carolan, Kok Fei Chan, Irina I Isakova-Sivak, Tatiana A Smolonogina, Kanta Subbarao, Ian G Barr, Julie Villanueva, Svetlana Shcherbik, Tatiana Bousse, Larisa G Rudenko
Live attenuated influenza vaccines (LAIVs) are promising tools for the induction of broad protection from influenza due to their ability to stimulate cross-reactive T cells against influenza pathogens. One of the major targets for cytotoxic T-cell immunity is viral nucleoprotein (NP), which is relatively conserved among antigenically distant influenza viruses. Nevertheless, a diversity of epitope composition has been found in the NP protein of different lineages of influenza A viruses. The H2N2 master donor virus which is currently used as a backbone for the LAIV and donor of the six genomic segments encoding the internal proteins, A/Leningrad/134/17/57 (MDV Len/17), was isolated 60 years ago...
June 18, 2018: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29929000/telmisartan-generates-ros-dependent-upregulation-of-death-receptor-5-to-sensitize-trail-in-lung-cancer-via-inhibition-of-autophagy-flux
#19
Mohammad Rasheduzzaman, Ji-Hong Moon, Ju-Hee Lee, Uddin Md Nazim, Sang-Youel Park
Telmisartan broadly used for the treatment of hypertension that is also known for its anticancer properties. TRAIL has the potential to kill tumor cells with minimal toxicity in normal cells by binding to death receptors, DR4 and DR5. Unfortunately, these TRAIL-death receptors have failed as most human cancers are resistant to TRAIL-mediated apoptosis. In this study, we evaluated telmisartan as a novel TRAIL-DR5-targeting agent with the aim of rendering TRAIL-based cancer therapies more active. Herein, we demonstrated that telmisartan could sensitize TRAIL and enhance NSCLC tumor cell death...
June 18, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29928995/engineering-folate-targeting-diselenide-containing-triblock-copolymer-as-a-redox-responsive-shell-sheddable-micelle-for-antitumor-therapy-in-vivo
#20
Farnaz Behroozi, Mohammad-Jafar Abdkhodaie, Hamid Sadeghi Abandansari, Leila Satarian, Mohammad Molazem, Khuloud T Al-Jamal, Hossein Baharvand
The oxidation-reduction (redox)-responsive micelle system is based on a diselenide-containing triblock copolymer, poly(ε-caprolactone)-bis(diselenide-methoxy poly(ethylene glycol)/poly(ethylene glycol)-folate) [PCL-(SeSe-mPEG/PEG-FA)2 ]. This has helped in the development of tumor-targeted delivery for hydrophobic anticancer drugs. The diselenide bond, as a redox-sensitive linkage, was designed in such a manner that it is located at the hydrophilic-hydrophobic hinge to allow complete collapse of the micelle and thus efficient drug release in redox environments...
June 18, 2018: Acta Biomaterialia
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