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https://www.readbyqxmd.com/read/27925848/hospitalizations-for-pneumococcal-diseases-in-tuscany-from-2002-to-2014-impact-of-universal-pediatric-vaccination-on-the-population
#1
Sara Boccalini, Ornella Varone, Martina Chellini, Luca Pieri, Antonino Sala, Cesare Berardi, Paolo Bonanni, Angela Bechini
Streptococcus pneumoniae is the main causative organism of acute media otitis in children and meningitis and bacterial pneumonia in the community. Since 2008 in Tuscany, central Italy, the pneumococcal conjugate vaccine (7-valent vaccine, switched in 13-valent vaccine in 2010) was actively offered free of charge to all newborns. Aim of the study is to evaluate the impact of pneumococcal paediatric vaccination on the Tuscan population on hospitalizations potentially caused by S. pneumoniae, during pre-vaccination (PVP, 2002-2007) and vaccination period (VP, 2009-2014)...
December 7, 2016: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/27925845/economic-studies-applied-to-vaccines-against-invasive-diseases-an-updated-budget-impact-analysis-of-age-based-pneumococcal-vaccination-strategies-in-the-elderly-in-italy
#2
Sara Boccalini, Angela Bechini, Roberto Gasparini, Donatella Panatto, Daniela Amicizia, Paolo Bonanni
Many evaluations have been carried out on the economic impact of pneumococcal vaccination in older adults (>64 years of age) in several countries, including Italy. However, these studies did not include the new data on the effectiveness of 13-valent conjugate pneumococcal vaccine (PCV13) in the elderly reported by the CAPiTA Study. The aim of the present study was to update our previous budget impact analysis of multi-cohort PCV13 vaccination in adults in Italy by including new scientific evidence. We also compared single-cohort vaccination strategies per year, in order to identify the cohort with the most favourable economic profile, in the event of the multi-cohort approach not being economically sustainable for the National Health System (NHS)...
December 7, 2016: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/27925698/frustrated-lewis-pairs-like-reactivity-of-rare-earth-metal-complexes-1-4-addition-reactions-and-polymerizations-of-conjugated-polar-alkenes
#3
Pengfei Xu, Yingming Yao, Xin Xu
Three rare-earth aryloxide ion pairs ([L1REOAr]+[B(C6F5)4]-; L1 = CH3C(2,6-iPr2C6H3N)CHC(CH3)(NCH2CH2PPh2); RE = Sc, Y, Lu; Ar = 2,6-tBu2C6H3) are reported, which feature RE/P combinations exhibiting frustrated Lewis pair (FLP)-like 1,4-addition reactions towards conjugated carbonyl substrates e.g. enone, ynone and acrylic substrates. Furthermore, these RE/P complexes are found to be effective catalysts for polymerizations of conjugated polar alkene monomers. Mechanistic studies reveal that the polymerizations are initiated by novel FLP-type 1,4-additions, rather than traditional and ubiquitous covalent RE-E (E = H, C, N, etc...
December 7, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27925668/cyclic-immunofluorescence-cycif-a-highly-multiplexed-method-for-single-cell-imaging
#4
Jia-Ren Lin, Mohammad Fallahi-Sichani, Jia-Yun Chen, Peter K Sorger
Cyclic Immunofluorescence (CycIF) is a public-domain method for performing highly multiplexed immunofluorescence imaging using a conventional epifluorescence microscope. It uses simple reagents and existing antibodies to construct images with up to 30 channels by sequential 4- to 6-channel imaging followed by fluorophore inactivation. Three variant methods are described, the most generally useful of which involves staining fixed cells with antibodies directly conjugated to Alexa Fluor dyes and imaging in four colors, inactivating fluorophores using a mild base in the presence of hydrogen peroxide and light, and then performing another round of staining and imaging...
December 7, 2016: Current Protocols in Chemical Biology
https://www.readbyqxmd.com/read/27925666/enriching-s-4-u-rna-using-methane-thiosulfonate-mts-chemistry
#5
Erin E Duffy, Matthew D Simon
Metabolic labeling of cellular RNA is a useful approach to study RNA biology. 4-Thiouridine (s(4) U) is a convenient nucleoside for metabolic labeling because it is cell permeable and is incorporated into newly transcribed RNA, and the sulfur moiety provides a handle for biochemical purification. However, a critical step in the purification of s(4) U-RNA is the efficiency of the chemistry used to enrich s(4) U-RNA. Here, we present a protocol for s(4) U-RNA enrichment that includes efficient and reversible covalent chemistry to biotinylate s(4) U-RNA using the activated disulfide methane thiosulfonate conjugated to biotin (MTS-biotin), followed by enrichment on streptavidin beads...
December 7, 2016: Current Protocols in Chemical Biology
https://www.readbyqxmd.com/read/27925460/nir-mediated-nanohybrids-of-upconversion-nanophosphors-and-fluorescent-conjugated-polymers-for-high-efficiency-antibacterial-performance-based-on-fluorescence-resonance-energy-transfer
#6
Junting Li, Qi Zhao, Feng Shi, Chenghui Liu, Yanli Tang
A novel nanohybrid comprised of upconversion nanophosphors (UCNPs) and fluorescent conjugated polymers (PFVCN) is rationally fabricated. The new UCNP/PFVCN nanohybrids combine the excellent antibacterial ability of PFVCN and the near IR (NIR) absorbing property of UCNPs, which allows for NIR-mediated antibacterial through the effective fluorescence resonance energy transfer from UCNPs to PFVCN accompanied with generation of reactive oxygen species to kill bacteria.
December 2016: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/27925323/synthesis-binding-properties-and-differences-on-cell-uptake-of-g-quadruplex-ligands-based-on-carbohydrate-naphthalene-diimide-conjugates
#7
Matilde Arevalo, Filippo Doria, Efres Belmonte-Reche, Aurore De Rache, Jenny Campos-Salinas, Ricardo Lucas, Eva Falomir, Miguel Carda, Jose María Pérez-Victoria, Jean-Louis Mergny, Mauro Freccero, Juan Carlos Morales
G-quadruplex (G4) are currently being explored as therapeutic targets in cancer and other pathologies. We have synthesized six carbohydrate naphthalene diimide conjugates (carb-NDIs) as G4 ligands to investigate their potential selectivity on G4 binding and on cell penetration. Carb-NDIs have shown certain selectivity for G4 structures against DNA duplexes but the different sugar moieties did not induce a preference for a specific G4 topology. Interestingly, when monosaccharides were attached through a short ethylene linker to the NDI scaffold their cellular uptake was 2-3 fold more efficient than when the sugar was directly attached through its anomeric position...
December 7, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27924982/upconversion-nanoparticle-as-elemental-tag-for-the-determination-of-alpha-fetoprotein-in-human-serum-by-inductively-coupled-plasma-mass-spectrometry
#8
Zhengru Liu, Bin Yang, Beibei Chen, Man He, Bin Hu
Upconversion nanoparticles (UCNPs) have received increasing attention due to their unique optical properties. Recognizing that UCNPs are lanthanide-doped nanoparticles, we incorporated UCNPs into an immunoassay with inductively coupled plasma mass spectrometry (ICP-MS) detection for the determination of specific proteins, e.g., alpha-fetoprotein (AFP). The sensitivity of the assay was enhanced because of the ICP-MS detection of UCNPs that contained large numbers of lanthanide elemental tags. Conjugates of UCNPs and antibodies were prepared and the morphology of the conjugates was characterized by transmission electron microscopy...
December 7, 2016: Analyst
https://www.readbyqxmd.com/read/27924729/conjugated-linoleic-acid-isomers-exert-differential-effects-on-an-adipocyte-model-of-hiv-associated-lipodystrophy
#9
Cathríona R Loonam, Sandra D O Dell, Anne Mullen
BACKGROUND: HIV-associated lipodystrophy is associated with decreased expression of PPAR-γ in adipose tissue. Conjugated linoleic acid (CLA) isomers (cis9, trans11 and trans10, cis12) are putative PPAR-γ agonists, but have not previously been investigated in the context of HIV-associated lipodystrophy. METHODS: 3T3-L1 pre-adipocytes were differentiated in the presence of ritonavir (20 μM as per previous experimental models) and 100 μM cis9,trans11, trans10,cis12 or vehicle control, DMSO...
December 7, 2016: Current HIV Research
https://www.readbyqxmd.com/read/27924497/a-strategy-combining-higher-energy-c-trap-dissociation-with-neutral-loss-and-product-ion-based-ms-n-acquisition-for-global-profiling-and-structure-annotation-of-fatty-acids-conjugates
#10
Qi-Rui Bi, Jin-Jun Hou, Min Yang, Yao Shen, Peng Qi, Rui-Hong Feng, Zhuo Dai, Bing-Peng Yan, Jian-Wei Wang, Xiao-Jian Shi, Wan-Ying Wu, De-An Guo
Fatty acids conjugates (FACs) are ubiquitous but found in trace amounts in the natural world. They are composed of multiple unknown substructures and side chains. Thus, FACs are difficult to be analyzed by traditional mass spectrometric methods. In this study, an integrated strategy was developed to global profiling and targeted structure annotation of FACs in complex matrix by LTQ Orbitrap. Dicarboxylic acid conjugated bufotoxins (DACBs) in Venenum bufonis (VB) were used as model compounds. The new strategy (abbreviated as HPNA) combined higher-energy C-trap dissociation (HCD) with product ion- (PI), neutral loss- (NL) based MS(n) (n ≥ 3) acquisition in both positive-ion mode and negative-ion mode...
December 6, 2016: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/27924336/the-single-molecule-electrical-conductance-of-a-rotaxane-hexayne-supramolecular-assembly
#11
David C Milan, Maximilian Krempe, Ali K Ismael, Levon D Movsisyan, Michael Franz, Iain Grace, Richard J Brooke, Walther Schwarzacher, Simon J Higgins, Harry L Anderson, Colin J Lambert, Rik R Tykwinski, Richard J Nichols
Oligoynes are archetypical molecular wires due to their 1-D chain of conjugated carbon atoms and ability to transmit charge over long distances by coherent tunneling. However, the stability of the oligoyne can be an issue. Here we address this problem by two stabilization methods, namely sterically shielding endgroups, and rotaxination to produce an insulated molecular wire. We demonstrate the threading of a hexayne within a macrocycle to form a rotaxane and report measurements of the electrical conductance of this single supramolecular assembly within an STM break junction...
December 7, 2016: Nanoscale
https://www.readbyqxmd.com/read/27924295/dataset-on-the-physical-characterization-of-biopolymer-coated-magnetic-nanoparticles
#12
Shazia Bano, Muhammad Afzal
The data presented in this article is related to the research article entitled "Paclitaxel loaded magnetic nanocomposites with folate modified chitosan/carboxymethyl surface; a vehicle for imaging and targeted drug delivery" (S. Bano, M. Afzal, M.M. Waraich, K. Alamgir, S. Nazir, 2016) [1]. It contains the absorbance spectra, band gap energies of pure nickel-ferrite nano cores (NFs), and calibration curve of Paclitaxel. Thermal stability analysis of pure NFs, chitosan (CS) and carboxymethyl cellulose (CMC)-conjugated NFs samples is also included in the data...
December 2016: Data in Brief
https://www.readbyqxmd.com/read/27924160/multivalent-targeting-based-delivery-of-therapeutic-peptide-using-ap1-elp-carrier-for-effective-cancer-therapy
#13
Vijaya Sarangthem, Yunjae Kim, Thoudam Debraj Singh, Bo-Yeon Seo, Sun-Ha Cheon, Young-Jin Lee, Byung-Heon Lee, Rang-Woon Park
Elastin-like polypeptide (ELP)-based drug delivery has been utilized for various applications including cancer therapies for many years. Genetic incorporation of internalization ligands and cell-targeting peptides along with ELP polymer enhanced tumor accumulation and retention time as well as stability and activities of the drug conjugates. Herein, we described a unique delivery system comprised of genetically engineered ELP incorporated with multiple copies of IL-4 receptor targeting peptide (AP1) periodically and proapoptotic peptide (KLAKLAK)2 referred to as AP1-ELP-KLAK...
2016: Theranostics
https://www.readbyqxmd.com/read/27923813/the-chemical-basis-of-thiol-addition-to-nitro-conjugated-linoleic-acid-a-protective-cell-signaling-lipid
#14
Lucia Turell, Dario A Vitturi, E Laura Coitiño, Lourdes Lebrato, Matias N Moller, Camila Sagasti, Sonia R Salvatore, Steven R Woodcock, Beatriz Alvarez, Francisco J Schopfer
Nitroalkene fatty acids are formed in vivo and exert protective and anti-inflammatory effects via reversible Michael addition to thiol-containing proteins in key signaling pathways. Nitro-conjugated linoleic acid (NO2-CLA) is preferentially formed, constitutes the most abundant nitrated fatty acid in humans and contains two carbons that could potentially react with thiols, modulating signaling actions and levels. In this work, we examined the reactions of NO2-CLA with low molecular weight thiols (glutathione, cysteine, homocysteine, cysteinylglycine and β mercaptoethanol) and human serum albumin (HSA)...
December 6, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27923650/3d-printed-microfluidic-magnetic-preconcentrator-for-the-detection-of-bacterial-pathogen-using-an-atp-luminometer-and-antibody-conjugated-magnetic-nanoparticles
#15
Chanyong Park, Jinyeop Lee, Yonghee Kim, Jaewon Kim, Jinkee Lee, Sungsu Park
Various types of microfluidic systems have been developed to detect bacterial pathogens. However, most of these require enrichment steps that take at least several hours when detecting bacteria that are present with a low number of cells and, in addition, fabrication requires complicated assembly steps. In this study, we report the development of 3D microfluidic magnetic preconcentrator (3DμFMP) made of plastic via 3D printing without the need for any assembly. 3DμFMP could selectively preconcentrate enterohemorrhagic Escherichia coli O157:H7 in 100mL by a factor of 700 within 1h using antibody-conjugated magnetic nanoparticles (Ab-MNPs)...
December 3, 2016: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/27923110/impact-of-oligonucleotide-structure-chemistry-and-delivery-method-on-in-vitro-cytotoxicity
#16
Maja M Janas, Yongfeng Jiang, Mark K Schlegel, Scott Waldron, Satya Kuchimanchi, Scott A Barros
Single-stranded (ss) 2'-fluoro (2'-F)-modified oligonucleotides (ONs) with a full phosphorothioate (PS) backbone have been reported to be cytotoxic and cause DNA double-strand breaks (DSBs) when transfected into HeLa cells. However, the molecular determinants of these effects have not been fully explored. In this study, we investigated the impact of ON structure, chemistry, delivery method, and cell type on in vitro cytotoxicity and DSBs. We found that ss PS-ONs were more cytotoxic than double-stranded (ds) PS-ONs, irrespective of the 2'-ribose chemistry, inclusive of the 2'-F modification...
December 6, 2016: Nucleic Acid Therapeutics
https://www.readbyqxmd.com/read/27922737/%C3%AF-conjugated-lewis-base-efficient-trap-passivation-and-charge-extraction-for-hybrid-perovskite-solar-cells
#17
Yuze Lin, Liang Shen, Jun Dai, Yehao Deng, Yang Wu, Yang Bai, Xiaopeng Zheng, Jiayu Wang, Yanjun Fang, Haotong Wei, Wei Ma, Xiao Cheng Zeng, Xiaowei Zhan, Jinsong Huang
A π-conjugated Lewis base is introduced into perovskite solar cells, namely, indacenodithiophene end-capped with 1.1-dicyanomethylene-3-indanone (IDIC), as a multifunctional interlayer which combines efficient trap-passivation and electron-extraction. Perovskite solar cells with IDIC layers yield higher photovoltages and photocurrents, and 45% enhanced efficiency compared with control devices without IDIC.
December 6, 2016: Advanced Materials
https://www.readbyqxmd.com/read/27922618/macroautophagy-without-lc3-conjugation
#18
Maurizio Renna, David C Rubinsztein
A recent study makes the surprising observation that autophagosomes can still form in the absence of the core conjugation machinery. Furthermore, while such autophagosomes can fuse with lysosomes, their degradation is delayed, and this is associated with delayed destruction of the inner autophagosomal double membrane, highlighting a new role for proteins thought to act exclusively in the formation of autophagosomes in late stages of the autophagic itinerary within autolysosomes.
December 6, 2016: Cell Research
https://www.readbyqxmd.com/read/27922280/ganetespib-for-small-cell-lung-cancer
#19
Deepa S Subramaniam, Eiran A Warner, Giuseppe Giaccone
Heat shock proteins (Hsps) are part of a complex network of chaperone proteins that are critically involved in the conformational maturation of intracellular proteins and regulate their degradation via the proteasome system Hsps (especially Hsp70 and Hsp90) are upregulated in many cancers and are potentially attractive therapeutic targets. Ganetespib is a potent non-geldanamycin analogue, and avoids the toxicities associated with older analogues due to its small molecular weight, lipophilicity and the absence of the benzoquinone moiety; strong pre-clinical data support its evaluation in lung cancer, especially small cell lung cancer (SCLC)...
December 6, 2016: Expert Opinion on Investigational Drugs
https://www.readbyqxmd.com/read/27922269/genomic-study-of-the-type-ivc-secretion-system-in-clostridium-difficile-understanding-c-difficile-evolution-via-horizontal-gene-transfer
#20
Wen Zhang, Ying Cheng, Pengcheng Du, Yuanyuan Zhang, Hongbing Jia, Xianping Li, Jing Wang, Na Han, Yujun Qiang, Chen Chen, Jinxing Lu
Clostridium difficile, the etiological agent of Clostridium difficile infection (CDI), is a gram-positive, spore-forming bacillus that is responsible for ∼20% of antibiotic-related cases of diarrhea and nearly all cases of pseudomembranous colitis. Previous data have shown that a substantial proportion (11%) of the C. difficile genome consists of mobile genetic elements, including seven conjugative transposons. However, the mechanism underlying the formation of a mosaic genome in C. difficile is unknown. The type-IV secretion system (T4SS) is the only secretion system known to transfer DNA segments among bacteria...
August 30, 2016: Genome Génome / Conseil National de Recherches Canada
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