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https://www.readbyqxmd.com/read/28733289/an-enterotoxin-like-binary-protein-from-pseudomonas-protegens-with-potent-nematicidal-activity
#1
Jun-Zhi Wei, Daniel L Siehl, Zhenglin Hou, Barbara Rosen, Jarred Oral, Christopher G Taylor, Gusui Wu
Soil microbes are a major food source for free-living soil nematodes. It is known that certain soil bacteria have evolved systems to combat predation. We identified the nematode-antagonistic Pseudomonas protegens strain 15G2 from screening of microbes. Through protein purification we identified a binary protein, designated as Pp-ANP, that is responsible for the nematicidal activity. This binary protein inhibits Caenorhabditis elegans growth and development by arresting larvae at L1 stage and killing older staged worms...
July 21, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28732882/engineering-of-anp-efficient-mutant-of-neisseria-polysaccharea-amylosucrase-for-the-synthesis-of-controlled-size-maltooligosaccharides
#2
Alizée Vergès, Sophie Barbe, Emmanuelle Cambon, Claire Moulis, Samuel Tranier, Magali Remaud-Siméon, Isabelle André
Amylosucrase from Neisseria polysaccharea naturally catalyzes the synthesis of α-1,4 glucans from sucrose. The product profile is quite polydisperse, ranging from soluble chains called maltooligosaccharides to high-molecular weight insoluble amylose. This enzyme was recently subjected to engineering of its active site to enable recognition of non-natural acceptor substrates. Libraries of variants were constructed and screened on sucrose, allowing the identification of a mutant that showed a 6-fold enhanced activity toward sucrose compared to the wild-type enzyme...
October 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28732345/multichannel-electroanalytical-devices-for-competitive-elisa-of-phenylethanolamine-a
#3
Yang Liu, Meng Cai, Weiping Wu, Yuting Fang, Pei She, Shouming Xu, Jianguo Li, Kang Zhao, Jingjuan Xu, Ning Bao, Anping Deng
Herein, we reported a disposable electroanalytical device for competitive enzyme-linked immunosorbent assay (ELISA) of phenylethanolamine A (PA). Conductive carbon tape coated with gold cluster served as the working electrode, while the counter and reference electrodes were fabricated on the filter paper by the screen-printing technique. Separating fabrication of the working electrode from other electrodes could make it possible for full utilization of the working electrode modification in bulk and no contamination of the immune-reagents on the counter and reference electrodes...
April 11, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28728835/a-multiplex-pcr-for-detection-of-six-viruses-in-ducks
#4
Yongjuan Wang, Shanyuan Zhu, Weiming Hong, Anping Wang, Weiyong Zuo
In this study, six pairs of specific primers that can amplify DNA fragments of different sizes were designed and synthesized according to viral protein gene sequences published in GenBank. Then, a multiplex PCR method was established for rapid detection of duck hepatitis virus 1, duck plague virus, duck Tembusu virus, muscovy duck parvovirus, muscovy duck reovirus, and duck H9N2 avian influenza virus, and achieve simple and rapid detection of viral diseases in ducks. Single PCR was used to confirm primer specificity, and PCR conditions were optimized to construct a multiplex PCR system...
July 17, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28727609/atrial-natriuretic-peptide-a-potential-early-therapy-for-the-prevention-of-multiple-organ-dysfunction-syndrome-following-severe-trauma
#5
Rong-Wei Zhang, Li-Li Liu, Lan-Lan Zeng, Rui-Jie Li, Ye-Hua Shen, Bin Zhang, Zi-Zhuo Liu, Meng-Fei Chen, Sheng-Mao Jiang, Li-Bing Jiang, Xiao-Gang Zhao, Shou-Yin Jiang
Trauma remains a tremendous medical burden partly because of increased expenditure for the management of multiple organ dysfunction syndrome (MODS) developed during hospital stay. The intestinal barrier injury continues to be a second insult resulting in MODS which currently lacks efficient strategies for prevention. Recent studies have uncovered multi-organ protective benefits of atrial natriuretic peptide (ANP) in cardiovascular disease. However, the role of ANP in prevention of MODS following severe trauma has not been understood...
July 19, 2017: Shock
https://www.readbyqxmd.com/read/28721709/-paradoxal-decrease-and-metabolic-effects-of-bnp-in-obese-patient
#6
Rémy C Martin-Du-Pan, Alain Golay
Natriuretic peptides (NP), ANP and BNP, are produced by cardiomyocytes when there is stretching of the ventricular and auricular walls in heart failure (HF). Their vasodilatator and natriuretic effect oppose to volume and pressure overload occurring in HF. Several studies have observed decreased levels of NP in obese and diabetic people and in patients with insulin resistance. This decrease could contribute to hypertension, frequently observed in obesity. NP have also a lipolytic action. Low levels of NP could promote obesity...
March 22, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28719616/analytical-network-process-based-optimum-cluster-head-selection-in-wireless-sensor-network
#7
Haleem Farman, Huma Javed, Bilal Jan, Jamil Ahmad, Shaukat Ali, Falak Naz Khalil, Murad Khan
Wireless Sensor Networks (WSNs) are becoming ubiquitous in everyday life due to their applications in weather forecasting, surveillance, implantable sensors for health monitoring and other plethora of applications. WSN is equipped with hundreds and thousands of small sensor nodes. As the size of a sensor node decreases, critical issues such as limited energy, computation time and limited memory become even more highlighted. In such a case, network lifetime mainly depends on efficient use of available resources...
2017: PloS One
https://www.readbyqxmd.com/read/28715690/a-dft-study-on-surface-enhanced-raman-spectroscopy-of-aromatic-dithiol-derivatives-adsorbed-on-gold-nanojunctions
#8
Tingting You, Xiufeng Lang, Anping Huang, Penggang Yin
A computational study on aromatic dithiol derivatives (HS-Ar-X-Ar-SH, X=O, S, Se, NH, CH2, NN, CHCH, CC) interacting with gold cluster(s) was presented to investigate the chemical enhancement mechanism related to surface-enhanced Raman spectroscopy (SERS) for molecular junctions. Density functional theory (DFT) were performed on derivatives molecules as well as their single-end-linked (SEL) or double-end-linked (DEL) complexes for geometric, spectra, electronic and excitation properties, leading to discussions on dominant factor during SERS process...
July 12, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28714245/drug-loaded-multifunctional-nanoparticles-targeted-to-the-endocardial-layer-of-the-injured-heart-modulate-hypertrophic-signaling
#9
Mónica P A Ferreira, Sanjeev Ranjan, Sini Kinnunen, Alexandra Correia, Virpi Talman, Ermei Mäkilä, Brianda Barrios-Lopez, Marianna Kemell, Vimalkumar Balasubramanian, Jarno Salonen, Jouni Hirvonen, Heikki Ruskoaho, Anu J Airaksinen, Hélder A Santos
Ischemic heart disease is the leading cause of death globally. Severe myocardial ischemia results in a massive loss of myocytes and acute myocardial infarction, the endocardium being the most vulnerable region. At present, current therapeutic lines only ameliorate modestly the quality of life of these patients. Here, an engineered nanocarrier is reported for targeted drug delivery into the endocardial layer of the left ventricle for cardiac repair. Biodegradable porous silicon (PSi) nanoparticles are functionalized with atrial natriuretic peptide (ANP), which is known to be expressed predominantly in the endocardium of the failing heart...
July 17, 2017: Small
https://www.readbyqxmd.com/read/28706128/transcriptome-analysis-reveals-a-role-for-the-endothelial-anp-gc-a-signaling-in-interfering-with-pre-metastatic-niche-formation-by-solid-cancers
#10
Takashi Nojiri, Miki Arai, Yutaka Suzuki, Motofumi Kumazoe, Takeshi Tokudome, Koichi Miura, Jun Hino, Hiroshi Hosoda, Mikiya Miyazato, Meinoshin Okumura, Shinpei Kawaoka, Kenji Kangawa
Cancer establishes a microenvironment called the pre-metastatic niche in distant organs where disseminated cancer cells can efficiently metastasize. Pre-metastatic niche formation requires various genetic factors. Previous studies suggest that inhibiting a single niche-factor is insufficient to completely block pre-metastatic niche formation especially in human patients. Here we show that the atrial natriuretic peptide (ANP), an endogenous hormone produced by the heart, inhibits pre-metastatic niche formation and metastasis of murine solid cancer models when pharmacologically supplied in vivo...
May 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28701741/preparation-of-mono-dispersed-high-energy-release-core-shell-structure-al-nanopowders-and-their-application-in-htpb-propellant-as-combustion-enhancers
#11
Fengyi Wang, Zhiguo Wu, Xushui Shangguan, Yunqiang Sun, Juanjuan Feng, Zhongyou Li, Luyang Chen, Shiyong Zuo, Renfu Zhuo, Pengxun Yan
Mono-dispersed, spherical and core/shell structure aluminum nanopowders (ANPs) were produced massively by high energy ion beam evaporation (HEIBE). And the number weighted average particle size of the ANPs is 98.9 nm, with an alumina shell (3-5 nm). Benefiting from the passivation treatment, the friction, impact and electrostatic spark sensitivity of the ANPs are almost equivalent to those of aluminum micro powders. The result of TG-DSC indicates the active aluminum content of ANPs is 87.14%, the enthalpy release value is 20...
July 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28698147/rip2-deficiency-attenuates-cardiac-hypertrophy-inflammation-and-fibrosis-in-pressure-overload-induced-mice
#12
Cui-Hua Zhao, Xiang Ma, Hong-Yu Guo, Peng Li, Hong-Yang Liu
Although the pathological cardiac hypertrophy presents a leading cause of morbidity and mortality worldwide, our knowledge of the molecular mechanisms underlying the disease is still poor. Here, we reported that receptor-interacting serine/threonine-protein kinase 2 (RIP2), promoting pro-inflammatory gene expression, enhanced the pathological cardiac hypertrophy in animals. The effects of RIP2 on the cardiac hypertrophy triggered by pathological stimuli have not been fully investigated. In our study, mice were subjected to aortic banding (AB) surgery to explore the pathological, echocardiographic and molecular mechanisms...
July 8, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28690610/toll-like-receptor-4-inhibition-improves-oxidative-stress-and-mitochondrial-health-in-isoproterenol-induced-cardiac-hypertrophy-in-rats
#13
Parmeshwar B Katare, Pankaj K Bagul, Amit K Dinda, Sanjay K Banerjee
BACKGROUND: Inflammation remains a crucial factor for progression of cardiac diseases and cardiac hypertrophy remains an important cause of cardiac failure over all age groups. As a key regulator of inflammation, toll-like receptor 4 (TLR4) plays an important role in pathogenesis of cardiac diseases. Being an important regulator of innate immunity, the precise pathway of TLR4-mediated cardiac complications is yet to be established. Therefore, the primary objective of the present study was to find the role of TLR4 in cardiac hypertrophy and the molecular mechanism thereof...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28686615/stat3-balances-myocyte-hypertrophy-vis-%C3%A3-vis-autophagy-in-response-to-angiotensin-ii-by-modulating-the-ampk%C3%AE-mtor-axis
#14
Lei Chen, Lin Zhao, Anweshan Samanta, Seyed Morteza Mahmoudi, Tanner Buehler, Amy Cantilena, Robert J Vincent, Magdy Girgis, Joshua Breeden, Samuel Asante, Yu-Ting Xuan, Buddhadeb Dawn
Signal transducers and activators of transcription 3 (STAT3) is known to participate in various cardiovascular signal transduction pathways, including those responsible for cardiac hypertrophy and cytoprotection. However, the role of STAT3 signaling in cardiomyocyte autophagy remains unclear. We tested the hypothesis that Angiotensin II (Ang II)-induced cardiomyocyte hypertrophy is effected, at least in part, through STAT3-mediated inhibition of cellular autophagy. In H9c2 cells, Ang II treatment resulted in STAT3 activation and cellular hypertrophy in a dose-dependent manner...
2017: PloS One
https://www.readbyqxmd.com/read/28680139/planar-binary-phase-lens-for-super-oscillatory-optical-hollow-needles
#15
Gang Chen, Zhixiang Wu, Anping Yu, Kun Zhang, Jing Wu, Luru Dai, Zhongquan Wen, Yinghu He, Zhihai Zhang, Senlin Jiang, Changtao Wang, Xiangang Luo
Optical hollow beams are suitable for materials processing, optical micromanipulation, microscopy, and optical lithography. However, conventional optical hollow beams are diffraction-limited. The generation of sub-wavelength optical hollow beams using a high numerical aperture objective lens and pupil filters has been theoretically proposed. Although sub-diffraction hollow spot has been reported, nondiffracting hollow beams of sub-diffraction transverse dimensions have not yet been experimentally demonstrated...
July 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28674393/identifying-affective-personality-profiles-a-latent-profile-analysis-of-the-affective-neuroscience-personality-scales
#16
Massimiliano Orri, Jean-Baptiste Pingault, Alexandra Rouquette, Christophe Lalanne, Bruno Falissard, Catherine Herba, Sylvana M Côté, Sylvie Berthoz
Based on evolutionary theory, a recent model in affective neuroscience delineated six emotional brain systems at the core of human personality: SEEKING, CARING, PLAYFULNESS, FEAR, ANGER, SADNESS. The Affective Neuroscience Personality Scales (ANPS) assess their functioning. Using a person-centred approach of the ANPS, this study: (i) examined the existence of latent personality profiles, (ii) studied their gender invariance, (iii) assessed their longitudinal (4 years) stability, and (iv) explored how they relate to several intrapersonal, interpersonal, and emotion regulation skills...
July 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28647688/antihypertensive-medication-adherence-and-risk-of-cardiovascular-disease-among-older-adults-a-population-based-cohort-study
#17
Quanhe Yang, Anping Chang, Matthew D Ritchey, Fleetwood Loustalot
BACKGROUND: Antihypertension medication (antihypertensive) adherence lowers risk of cardiovascular disease (CVD); few studies have examined this association among older adults. METHODS AND RESULTS: We assessed this association among Medicare fee-for-service beneficiaries aged 66 to 79 years who were newly diagnosed with hypertension and initiated on antihypertensives in 2008-2009 (n=155 597). We calculated proportion of days covered (PDC) during follow-up, using proportional subdistribution hazard models, to examine association between antihypertensive adherence and a composite CVD outcomes, including first incident of fatal/nonfatal acute myocardial infarction, ischemic heart disease, stroke/transient ischemic attack, and heart failure...
June 24, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28641980/cardiomyocyte-specific-overexpression-of-a-37-amino-acid-domain-of-regulator-of-g-protein-signalling-2-inhibits-cardiac-hypertrophy-and-improves-function-in-response-to-pressure-overload-in-mice
#18
Katherine N Lee, Xiangru Lu, Chau Nguyen, Qingping Feng, Peter Chidiac
Regulator of G protein signalling 2 (RGS2) is known to play a protective role in maladaptive cardiac hypertrophy and heart failure via its ability to inhibit Gq- and Gs- mediated GPCR signalling. We previously demonstrated that RGS2 can also inhibit protein translation and can thereby attenuate cell growth. This G protein-independent inhibitory effect has been mapped to a 37 amino acid domain (RGS2(eb)) within RGS2 that binds to eukaryotic initiation factor 2B (eIF2B). When expressed in neonatal rat cardiomyocytes, RGS2(eb) attenuates both protein synthesis and hypertrophy induced by Gq- and Gs- activating agents...
June 19, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28639898/targeting-interlukin-6-to-relieve-immunosuppression-in-tumor-microenvironment
#19
REVIEW
Qian Liu, Shengnan Yu, Anping Li, Hanxiao Xu, Xinwei Han, Kongming Wu
Immunotolerance is one of the hallmarks of malignant tumors. Tumor cells escape from host immune surveillance through various mechanisms resulting in tumor progression and therapeutic resistance. Interlukin-6 is a proinflammatory cytokine involved in many physiological and pathological processes by integrating with multiple intracellular signaling pathways. Aberrant expression of interlukin-6 is associated with the growth, metastasis, and chemotherapeutic resistance in a wide range of cancers. Interlukin-6 exerts immunosuppressive capacity mostly by stimulating the infiltrations of myeloid-derived suppressor cells, tumor-associated neutrophils, and cancer stem-like cells via Janus-activated kinase/signal transducer and activator of transcription 3 pathway in tumor microenvironment...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28630469/c2238-anp-gene-variant-promotes-increased-platelet-aggregation-through-the-activation-of-nox2-and-the-reduction-of-camp
#20
Roberto Carnevale, Pasquale Pignatelli, Giacomo Frati, Cristina Nocella, Rosita Stanzione, Daniele Pastori, Simona Marchitti, Valentina Valenti, Maria Santulli, Emanuele Barbato, Teresa Strisciuglio, Leonardo Schirone, Carmine Vecchione, Francesco Violi, Massimo Volpe, Speranza Rubattu, Sebastiano Sciarretta
Subjects carrying the C2238 variant of the atrial natriuretic peptide (ANP) gene have a higher occurrence of stroke and acute coronary syndrome, suggesting an increased predisposition to acute thrombotic events in these subjects. We evaluated for the first time the direct effects of mutant ANP (C2238/αANP) on platelet activation in vitro and in human subjects. In vitro, platelets were incubated with no peptide, with T2238/αANP (WT) or with C2238/αANP at different concentrations. C2238/αANP (10(-10) M) induced higher collagen-induced platelet aggregation with respect to both control without ANP and T2238/αANP...
June 19, 2017: Scientific Reports
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