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https://www.readbyqxmd.com/read/29775901/tricine-co-ligand-improved-the-efficacy-of-99m-tc-hynic-ser-3-j18-peptide-for-targeting-and-imaging-of-non-small-cell-lung-cancer
#1
Zahra Shaghaghi, Seyed Mohammad Abedi, Seyed Jalal Hosseinimehr
The early diagnosis of non-small cell lung cancer (NSCLC) is important for increasing survival rate and improving quality life of patients. The aim of this study was to investigate 99m  Tc-(tricine)-HYNIC-(Ser)3 -J18 for targeting and imaging of NSCLC in A-549 xenografted nude mice. The (Ser)3 -J18 peptide was conjugated with HYNIC and labeled with 99m  Tc using tricine as a co-ligand. The radiolabeled peptide was evaluated for its radiochemical purity, stability, receptor binding and internalization in vitro...
May 15, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29775857/enzyme-free-homogeneous-electrochemical-biosensor-for-dna-assay-using-toehold-triggered-strand-displacement-reaction-coupled-with-host-guest-recognition-of-fe-3-o-4-sio-2-%C3%AE-cd-nanocomposites
#2
Jingjing Jiang, Xinyi Lin, Dong Ding, Guowang Diao
Taking advantages of the toehold-triggered strand displacement reaction (TSDR) and host-guest interaction of β-cyclodextrin (β-CD), a facile enzyme-free and homogeneous electrochemical sensing strategy was designed for the sensitive assay of target DNA using Fe3 O4 @SiO2 @β-CD nanocomposites and ferrocene-labeled hairpin DNA (H-1) as the capture and electrochemical probes, respectively. Upon addition of target molecule, the initiated TSDR process induced the conformational change of H-1, and subsequently stimulated the dynamic assembly of assist probes (A-1 and A-2) to generate H-1:A-1:A-2 duplex along with the release of target sequence...
April 17, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29775854/a-wavelength-modulated-localized-surface-plasmon-resonance-lspr-optical-fiber-sensor-for-sensitive-detection-of-mercury-ii-ion-by-gold-nanoparticles-dna-conjugates
#3
Shuo Jia, Chao Bian, Jizhou Sun, Jianhua Tong, Shanhong Xia
The study presented herein investigated an easy preparation, high performance, wavelength-modulated LSPR optical fiber chemosensor coated by gold nanospheres(AuNS) for Hg2+ detection based on thymine-Hg2+ -thymine base pair mismatches and the coupled plasmonic resonance effect.Utilizing electrostatic self-assembly method, the high density and dispersivity monolayer AuNS coated LSPR fiber sensor had the near field refractive index sensitivity up to 2016 nm/RIU. The single-strand probe DNA served as a binding element for free AuNS labelled-target DNA conjugates was attached to the monolayer AuNS by Au-S bond...
May 8, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29775807/fir-efficacy-safety-and-biomarker-analysis-of-a-phase-ii-open-label-study-of-atezolizumab-in-pd-l1-selected-patients-with-non-small-cell-lung-cancer
#4
David R Spigel, Jamie E Chaft, Scott Gettinger, Bo H Chao, Luc Dirix, Peter Schmid, Laura Q M Chow, Rodney J Hicks, Larry Leon, Jill Fredrickson, Marcin Kowanetz, Alan Sandler, Roel Funke, Naiyer A Rizvi
INTRODUCTION: The FIR phase II study (NCT01846416) evaluated the efficacy and safety of anti-programmed death-ligand 1 (PD-L1) atezolizumab in advanced non-small-cell lung cancer (NSCLC) selected by tumor cell (TC) or tumor-infiltrating immune cell (IC) PD-L1 expression. METHODS: Patients with PD-L1 TC2/3 (PD-L1 staining on ≥5% of TC) or IC2/3 tumors (PD-L1 staining on ≥5% of IC; determined by SP142 PD-L1 immunohistochemistry assay) with paired fresh and archival histology samples were recruited into Cohort 1 (chemotherapy-naïve/>6 months between adjuvant chemotherapy and recurrence), Cohort 2 (≥ second-line without brain metastases), or Cohort 3 (≥ second-line with treated brain metastases)...
May 15, 2018: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/29775703/ultrastructural-characterization-of-corticotropin-releasing-factor-and-neuropeptide-y-in-the-rat-locus-coeruleus-anatomical-evidence-for-putative-interactions
#5
Catherine C Theisen, Beverly A S Reyes, E L Sabban, Elisabeth J Van Bockstaele
As a neurochemical mediator of stress resilience, NPY has been shown to oppose excitatory effects of the pro-stress neuropeptide corticotropin-releasing factor (CRF). Previous studies have described the anatomical organization of NPY and CRF in the central nucleus of the amygdala, which sends CRF projections to the locus coeruleus (LC), activating LC norepinephrine release. However, the cellular substrates for interactions between NPY and CRF in the LC remain unknown. In this study, we investigated these anatomical substrates in the male rat LC, using immunocytochemistry, confocal microscopy, and immunoelectron microscopy to detect NPY and CRF, as well as CRF and Y1 or Y2 receptors (Y1R or Y2R)...
May 15, 2018: Neuroscience
https://www.readbyqxmd.com/read/29775623/unsupervised-visual-discrimination-learning-of-complex-stimuli-accuracy-bias-and-generalization
#6
Rodrigo Montefusco-Siegmund, Mauricio Toro, Pedro E Maldonado, María de la L Aylwin
Through same-different judgements, we can discriminate an immense variety of stimuli and consequently, they are critical in our everyday interaction with the environment. The quality of the judgements depends on familiarity with stimuli. A way to improve the discrimination is through learning, but to this day, we lack direct evidence of how learning shapes the same-different judgments with complex stimuli. We studied unsupervised visual discrimination learning in 42 participants, as they performed same-different judgments with two types of unfamiliar complex stimuli in the absence of labeling or individuation...
May 15, 2018: Vision Research
https://www.readbyqxmd.com/read/29775404/evaluation-of-chromosomal-aberrations-induced-by-188-re-dendrimer-nanosystem-on-b16f1-melanoma-cells
#7
Marcos Tassano, Natalia Oddone, Marcelo Fernández, Williams Porcal, María Fernanda García, Wilner Martínez, Juan Claudio Benech, Pablo Cabral
PURPOSE: Study of rhenium-188 labeling of polyamidoamine (PAMAM) generation 4 (G4) dendrimer and its evaluation on biodistribution and chromosomal aberrations in melanoma cells induced by ionizing radiation as potential treatment agent. MATERIALS AND METHODS: Dendrimers were first conjugated with Suc-HYNIC (Succinimidyl 6-hydrazinopyridine-3-carboxylic acid hydrochloride). Dendrimer-HYNIC was then incubated with 188 ReO4 - . Biodistribution were performed administrating 188 Re-dendrimer to normal (NM) or melanoma-bearing mice (MBM)...
May 18, 2018: International Journal of Radiation Biology
https://www.readbyqxmd.com/read/29775170/rationale-design-and-protocol-of-a-randomized-controlled-trial-of-the-safety-and-efficacy-of-dabigatran-etexilate-versus-dose-adjusted-warfarin-in-patients-with-cerebral-venous-thrombosis
#8
José M Ferro, Francesco Dentali, Jonathan M Coutinho, Adam Kobayashi, Jorge Caria, Marc Desch, Mandy Fraessdorf, Holger Huisman, Hans-Christoph Diener
Rationale To prevent recurrent venous thrombotic events after acute cerebral venous or dural sinus thrombosis, guidelines recommend long-term oral anticoagulation with vitamin K antagonists. Non-vitamin K oral anticoagulant experience in cerebral venous or dural sinus thrombosis is limited to case reports and series. Aim To compare dabigatran with dose-adjusted warfarin in patients with cerebral venous or dural sinus thrombosis for the prevention of recurrent venous thrombotic event. Sample size One hundred and twenty patients...
January 1, 2018: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/29775143/testing-the-effectiveness-and-the-contribution-of-experimental-supercharge-reversed-end-to-side-nerve-transfer
#9
Mustafa Nadi, Sudheesh Ramachandran, Abir Islam, Joanne Forden, Gui Fang Guo, Rajiv Midha
OBJECTIVE Supercharge end-to-side (SETS) transfer, also referred to as reverse end-to-side transfer, distal to severe nerve compression neuropathy or in-continuity nerve injury is gaining clinical popularity despite questions about its effectiveness. Here, the authors examined SETS distal to experimental neuroma in-continuity (NIC) injuries for efficacy in enhancing neuronal regeneration and functional outcome, and, for the first time, they definitively evaluated the degree of contribution of the native and donor motor neuron pools...
May 18, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29775134/csf-inflammatory-biomarkers-responsive-to-treatment-in-progressive-multiple-sclerosis-capture-residual-inflammation-associated-with-axonal-damage
#10
Jeppe Romme Christensen, Mika Komori, Marina Rode von Essen, Rikke Ratzer, Lars Börnsen, Bibi Bielekova, Finn Sellebjerg
BACKGROUND: Development of treatments for progressive multiple sclerosis (MS) is challenged by the lack of sensitive and treatment-responsive biomarkers of intrathecal inflammation. OBJECTIVE: To validate the responsiveness of cerebrospinal fluid (CSF) inflammatory biomarkers to treatment with natalizumab and methylprednisolone in progressive MS and to examine the relationship between CSF inflammatory and tissue damage biomarkers. METHODS: CSF samples from two open-label phase II trials of natalizumab and methylprednisolone in primary and secondary progressive MS...
May 1, 2018: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/29775069/simultaneous-release-and-labelling-of-o-and-n-glycans-allowing-for-rapid-glycomic-analysis-by-online-lc-uv-esi-ms-ms
#11
Chengjian Wang, Yu Lu, Jianli Han, Wanjun Jin, Lingmei Li, Ying Zhang, Xuezheng Song, Linjuan Huang, Zhongfu Wang
Most glycoproteins and biological protein samples undergo both O- and N-glycosylation, making characterization of their structures very complicated and time-consuming. Nevertheless, to fully understand the biological functions of glycosylation, both the glycosylation forms need to be analyzed. Herein we report a versatile, convenient one-pot method in which O- and N-glycans are simultaneously released from glycoproteins and chromogenically labelled in situ and thus available for further characterization. In this procedure, glycoproteins are incubated with 1-phenyl-3-methyl-5-pyrazolone (PMP) in aqueous ammonium hydroxide, making O-glycans released from protein backbones by beta-elimination and N-glycans liberated by alkaline hydrolysis...
May 18, 2018: Journal of Proteome Research
https://www.readbyqxmd.com/read/29775060/distinct-populations-in-spin-label-epr-spectra-from-nitroxides
#12
Derek Marsh
It is not possible to reproduce simulations of nitroxide spin-label EPR spectra published in J. Phys. Chem. 88, 3454-3465 (1984), when using the motional model and parameters given in that paper. Instead of the apparent two-component line shapes claimed, the spectra resemble single-component powder patterns expected from axially anisotropic, partial motional-averaging (a situation familiar for chain-labelled lipids in nonaligned fluid membranes). This is because: (i) the nitroxide z-axis is inclined at a fixed angle to the principal diffusion axis, and (ii) motion perpendicular to the principal diffusion axis is so slow as to approximate a powder distribution...
May 18, 2018: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29775058/multiple-click-selective-trna-synthetases-expand-mammalian-cell-specific-proteomics
#13
Andrew C Yang, Haley du Bois, Niclas Olsson, David Gate, Benoit Lehallier, Daniela Berdnik, Kyle D Brewer, Carolyn R Bertozzi, Joshua E Elias, Tony Wyss-Coray
Bio-orthogonal tools enable cell-type-specific proteomics, a prerequisite to understanding biological processes in multicellular organisms. Here we report two engineered aminoacyl-tRNA synthetases for mammalian bio-orthogonal labeling: a tyrosyl ( ScTyrY34G ) and a phenylalanyl ( MmPheT412G ) tRNA synthetase that incorporate azide-bearing noncanonical amino acids specifically into the nascent proteomes of host cells. Azide-labeled proteins are chemoselectively tagged via azide-alkyne cycloadditions with fluorophores for imaging or affinity resins for mass spectrometric characterization...
May 18, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29775052/double-photosystems-based-z-scheme-photoelectrochemical-sensing-mode-for-ultrasensitive-detection-of-disease-biomarker-accompanying-3d-dna-walker
#14
Shuzhen Lv, Kangyao Zhang, Yongyi Zeng, Dianping Tang
A new double photosystems-based 'Z-scheme' photoelectrochemical (PEC) sensing platform is designed for ultrasensitive detection of prostate-specific antigen (PSA) by coupling with three-dimensional (3D) DNA walker. Two photosystems consist of CdS quantum dots (photosystem I; PS I) and BiVO4 photoactive materials (photosystem II; PS II), whereas gold nanoparticles (AuNPs) photodeposited on high-active {010} facets of BiVO4 are used as the electron mediators to promote electron transfer from conduction band (CB) of PS II to valence band (VB) of PS I...
May 18, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29774968/granulysin-mediated-apoptosis-of-trophoblasts-in-blighted-ovum-and-missed-abortion
#15
Tamara Gulic, Gordana Laskarin, Marin Dominovic, Lana Glavan Gacanin, Emina Babarović, Zeljka Rubesa, Herman Haller, Daniel Rukavina
PROBLEM: Granulysin (GNLY) is a cytotoxic molecule mostly present in decidual natural killer (NK) cells. Blighted ovum (BO) and missed abortion (MA) represent the early pathological pregnancies with hindered development of the embryoblast or a dead embryo. We investigated the GNLY-mediated apoptotic mechanism potentially responsible for delayed termination of pregnancy. METHOD OF STUDY: We performed immunohistological and immunofluorescence labeling of decidual tissues (GNLY, Apaf-1, NF-κB)...
May 18, 2018: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/29774905/dual-emissions-and-thermochromic-luminescences-of-isomorphic-chiral-twofold-interpenetrated-3-d-nets-built-from-i-1-o-2-type-hybrid-inorganic-organic-frameworks-of-nh-2-ch-3-2-3-pb-2-x-3-bdc-2-x-br-i
#16
Shao-Xian Liu, Guo-Jun Yuan, Lu Zhai, Lifeng Wang, Hong-Bin Luo, Xiao-Ming Ren
Two pairs of MOF-based hybrid enantiomorphs, [NH2(CH3)2]3[Pb2X3(BDC)2] (H2BDC = 1,4-benzenedicarboxylic acid, X = Br or I), have been synthesized using the solvothermal reaction and then manually separated, which are labeled as 1a/1b (X = Br) and 2a/2b (X = I). The isomorphic 1a and 2a crystallize in tetragonal space group P43212, and the isomorphic 1b and 2b in the enantiomorphic space group P41212. Twofold interpenetrated three-dimensional (3-D) networks were built from two sets of equivalent I1O2 type hybrid inorganic-organic frameworks in 1a/1b and 2a/2b...
May 18, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29774899/smartphone-based-rapid-quantification-of-viable-bacteria-by-single-cell-microdroplet-turbidity-imaging
#17
Xiaonan Cui, Lihui Ren, Yufei Shan, Xixian Wang, Zhenlong Yang, Chunyu Li, Jian Xu, Bo Ma
Standard plate count (SPC) has been recognized as the golden standard for the quantification of viable bacteria. However, SPC usually takes one to several days to grow individual cells into a visible colony, which greatly hampers its application in rapid bacteria enumeration. Here we present a microdroplet turbidity imaging based digital standard plate count (dSPC) method to overcome this hurdle. Instead of cultivating on agar plates, bacteria are encapsulated in monodisperse microdroplets for single-cell cultivation...
May 18, 2018: Analyst
https://www.readbyqxmd.com/read/29774879/-role-of-dna-methyltransferase-1-in-mouse-skin-aging
#18
Xiangmei Ren, Xiao Xiao, Ben Wang, Yiya Zhang, Mei Yi, Ji Li, Wei Shi
To explore the role ofDNA methyltransferase 1 (DNMT1) in mouse skin aging.
 Methods: Epidermal conditional K14 Cre-mediated DNA methyltransferase 1 (DNMT1) knockout mice (Mut group, n=4) and the littermate normal mice with the same age (WT group) n=4) were used in this study. HE staining was used to detect the pathological changes of skin; the changes of number in the dermal elastic fibers were detected by Gomori aldehyde fuchsin staining, the number of 5-bromo-2-deoxyuridine (BrdU)-labeled transit amplifying cells (TAC) in epidermis were detected by immunohistochemical staining; the number of chlorodeoxyuridine (CldU)-label-retaining cells (LRC) in epidermis were detected by immunofluorescent staining...
April 28, 2018: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/29774635/safety-and-efficacy-from-a-6-week-double-blind-study-and-a-52-week-open-label-extension-of-aripiprazole-in-adolescents-with-schizophrenia-in-japan
#19
Hideo Matsumoto, Jun Ishigooka, Hiroaki Ono, Yoshihiro Tadori
AIMS: The purpose of this study was to evaluate the safety and efficacy of aripiprazole in adolescents with schizophrenia in Japan. METHODS: In a 6-week, randomized, double-blind, dose-comparison study, adolescents (aged 13-17 years) with schizophrenia were randomized to receive aripiprazole 2, 6-12, or 24-30 mg/day. Patients who completed the 6-week study participated in a 52-week, flexible-dose, open-label extension (OLE) study of aripiprazole (initial dose: 2 mg/day, maintenance dose: 6-24 mg/day, maximum dose: 30 mg/day)...
May 18, 2018: Psychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/29774465/effect-of-inositol-stereoisomers-at-different-dosages-in-gestational-diabetes-an-open-label-parallel-randomized-controlled-trial
#20
Federica Fraticelli, Claudio Celentano, Isaia Al Zecca, Giacoma Di Vieste, Basilio Pintaudi, Marco Liberati, Marica Franzago, Marta Di Nicola, Ester Vitacolonna
AIMS: Gestational diabetes mellitus (GDM) is the most common metabolic disorder of pregnancy. The aim of the study is to compare the effect of different dosages of inositol stereoisomers supplementation on insulin resistance levels and several maternal-fetal outcomes in GDM women. METHODS: Participants were randomly allocated to receive daily: 400 mcg folic acid (control treatment), 4000 mg myo-inositol plus 400 mcg folic acid (MI treatment), 500 mg D-chiro-inositol plus 400 mcg folic acid (DCI treatment) or 1100/27...
May 17, 2018: Acta Diabetologica
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