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https://www.readbyqxmd.com/read/29458177/colorimetric-detection-of-microrna-based-on-dnazyme-and-nuclease-assisted-catalytic-hairpin-assembly-signal-amplification
#1
Hongmei Zhang, Kuiyu Wang, Shengjun Bu, Zhongyi Li, Chuanjing Ju, Jiayu Wan
Accurate and quantitative analysis of microRNA (miRNA) expression is critical for the diagnostics and theranostics of a disease. Herein, a proof-of-concept of a colorimetric horseradish peroxidase-mimicking DNAzyme (HRP-DNAzyme) biosensor for miRNA assay based on nuclease-assisted catalytic hairpin assembly (CHA) signal amplification was demonstrated. Duplex-specific nuclease (DSN) was employed to cleave the single-stranded DNA (ssDNA) chimeric probe (CP) on the magnetic bead (MB) surface via hybridization of the CP and target miRNA...
February 16, 2018: Molecular and Cellular Probes
https://www.readbyqxmd.com/read/29457945/factors-that-influence-nurses-assessment-of-patient-acuity-and-response-to-acute-deterioration
#2
Mark Dalton, John Harrison, Anitra Malin, Conan Leavey
BACKGROUND: nurses play a crucial role in the early recognition and management of the deteriorating patient. They are responsible for the care they provide to their patients, part of which is the monitoring of vital signs (blood pressure, pulse, respiratory rate and temperature), which are fundamental in the surveillance of deterioration. The aim of this study was to discover what factors influence how nurses assess patient acuity and their response to acute deterioration. METHODS: a generic qualitative approach was used...
February 22, 2018: British Journal of Nursing: BJN
https://www.readbyqxmd.com/read/29457336/high-school-biology-students-use-of-visual-molecular-dynamics-as-an-authentic-tool-for-learning-about-modeling-as-a-professional-scientific-practice
#3
Stephen R Burgin, Jennifer Oramous, Michael Kaminski, Linda Stocker, Mahmoud Moradi
Modeling is a practice of science that is underemphasized in biology classrooms in comparison to its central focus in the physical sciences. Visualizations of the submicroscopic world of molecules are becoming increasingly sophisticated with the evolution of new technologies. With this in mind, we introduced high school biology classrooms to a professional molecular modeling software program used by research biochemists to visualize proteins and other macromolecules. Analysis of surveys completed before and after the use of the program revealed significant student gains in their understandings of the nature of models...
February 19, 2018: Biochemistry and Molecular Biology Education
https://www.readbyqxmd.com/read/29451053/the-fate-of-silver-nanoparticles-in-authentic-human-saliva
#4
Kamonwad Ngamchuea, Christopher Batchelor-McAuley, Richard G Compton
The physicochemical properties of silver nanoparticles (AgNPs) in human whole saliva are investigated herein. In authentic saliva samples, AgNPs exhibit a great stability with over 70% of the nanomaterial remaining intact after a 24-h incubation in the presence of ∼0.3 mM dissolved oxygen. The small loss of AgNPs from the saliva sample has been demonstrated to be a result of two processes: agglomeration/aggregation (not involving oxygen) and oxidative dissolution of AgNPs (assisted by oxygen). In authentic saliva, AgNPs are also shown to be more inert both chemically (silver oxidative dissolution) and electrochemically (electron transfer at an electrode) than in synthetic saliva or aqueous electrolytes...
February 16, 2018: Nanotoxicology
https://www.readbyqxmd.com/read/29449876/authenticity-analyses-of-rhizoma-paridis-using-barcoding-coupled-with-high-resolution-melting-bar-hrm-analysis-to-control-its-quality-for-medicinal-plant-product
#5
Bao-Zhong Duan, Ya-Ping Wang, Hai-Lan Fang, Chao Xiong, Xi-Wen Li, Ping Wang, Shi-Lin Chen
Background: Rhizoma Paridis (Chonglou) is a commonly used and precious traditional Chinese medicine. Paris polyphylla Smith var. yunnanensis (Franch.) Hand. -Mazz. and Paris polyphylla Smith var . chinensis (Franch.) Hara are the two main sources of Chonglou under the monograph of Rhizoma Paridis in Chinese Pharmacopoeia. In the local marketplace, however, this medicine is prone to be accidentally contaminated, deliberately substituted or admixed with other species that are similar to Rhizoma Paridis in shape and color...
2018: Chinese Medicine
https://www.readbyqxmd.com/read/29448305/development-and-validation-of-gc-ms-ms-method-for-simultaneous-quantitation-of-several-antipsychotics-in-human-plasma-and-oral-fluid
#6
Tiago Rosado, David Oppolzer, Belinda Cruz, Mário Barroso, Samira Varela, Victor Oliveira, Carlos Leitão, Eugenia Gallardo
RATIONALE: Antipsychotic drugs are prescription medications used to treat psychotic disorders, such as schizophrenia, schizoaffective disorder, or psychotic depression. With several antipsychotic drugs currently available all over the world, this class of drugs has quickly gotten importance in both clinical and forensic context. This work describes the development and validation of a methodology for the determination of seven antipsychotic drugs in plasma and oral fluid samples. METHODS: The antipsychotic drugs (chlorpromazine, clozapine, haloperidol, olanzapine, quetiapine, cyamemazine and, levomepromazine) were isolated from 0...
February 15, 2018: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/29445807/base-free-n-alkylation-of-anilines-with-arch-2-oh-and-transfer-hydrogenation-of-aldehydes-ketones-catalyzed-by-the-complexes-of-%C3%AE-5-cp-ir-iii-with-chalcogenated-schiff-bases-of-anthracene-9-carbaldehyde
#7
Pooja Dubey, Sonu Gupta, Ajai K Singh
The condensation of anthracene-9-carbaldehyde with 2-(phenylthio/seleno)ethylamine results in Schiff bases [PhS(CH 2 ) 2 C[double bond, length as m-dash]N-9-C 14 H 9 ](L1) and [PhSe(CH 2 ) 2 C[double bond, length as m-dash]N-9-C 14 H 9 ] (L2). On their reaction with [(η 5 -Cp*)IrCl(μ-Cl)] 2 and CH 3 COONa at 50 °C followed by treatment with NH 4 PF 6 , iridacycles, [(η 5 -Cp*)Ir(L-H)][PF 6 ] (1: L = L1; 2: L = L2), result. The same reaction in the absence of CH 3 COONa gives complexes [(η 5 -Cp*)Ir(L)Cl][PF 6 ] (3-4) in which L = L1(3)/L2(4) ligates in a bidentate mode...
February 15, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29445453/the-european-falsified-medicines-directive-in-poland-background-implementation-and-potential-recommendations-for-pharmacists
#8
Piotr Merks, Damian Swieczkowski, Michal Byliniak, Mariola Drozd, Katarzyna Krupa, Milosz Jaguszewski, David A Brindley, Bernard D Naughton
By February 2019, the Polish pharmaceutical industry, community and hospital pharmacies, wholesalers and parallel traders must all comply with the EU-wide Falsified Medicines Directive (FMD) legislation (2011/62/EU), to ensure that no medicinal product is dispensed to a patient without proper tracking and authentication. Here we describe how Poland is complying with the new EU regulations, the actions that have been taken to incorporate the FMD into Polish Pharmaceutical Law and whether or not these actions are sufficient...
January 2018: European Journal of Hospital Pharmacy. Science and Practice
https://www.readbyqxmd.com/read/29444910/the-neuroendocrine-phenotype-genomic-profile-and-therapeutic-sensitivity-of-gepnet-cell-lines
#9
Tobias Hofving, Yvonne Arvidsson, Bilal Almobarak, Linda Inge, Roswitha Pfragner, Marta Persson, Göran Stenman, Erik Kristiansson, Viktor Johanson, Ola Nilsson
Experimental models of neuroendocrine tumour disease are scarce, and no comprehensive characterisation of existing gastroenteropancreatic neuroendocrine tumour (GEPNET) cell lines has been reported. In this study, we aimed to define the molecular characteristics and therapeutic sensitivity of these cell lines. We therefore performed immunophenotyping, copy number profiling, whole-exome sequencing and a large-scale inhibitor screening of seven GEPNET cell lines. Four cell lines, GOT1, P-STS, BON-1 and QGP-1, displayed a neuroendocrine phenotype while three others, KRJ-I, L-STS and H-STS, did not...
March 2018: Endocrine-related Cancer
https://www.readbyqxmd.com/read/29444678/the-wild-taxa-utilized-as-vegetables-in-sicily-italy-a-traditional-component-of-the-mediterranean-diet
#10
Anna Geraci, Filippo Amato, Giuseppe Di Noto, Giuseppe Bazan, Rosario Schicchi
BACKGROUND: Wild vegetables in the Mediterranean Basin are still often consumed as a part of the diet and, in particular, there is a great tradition regarding their use in Sicily. In this study, an ethnobotanical field investigation was carried out to (a) identify the wild native taxa traditionally gathered and consumed as vegetables in Sicily, comparing the collected ethnobotanical data with those of other countries that have nominated the Mediterranean diet for inclusion in the UNESCO Representative List of the Intangible Cultural Heritage of Humanity and (b) highlight new culinary uses of these plants...
February 14, 2018: Journal of Ethnobiology and Ethnomedicine
https://www.readbyqxmd.com/read/29443042/single-cell-microfluidic-analysis-of-bacillus-subtilis
#11
Matthew T Cabeen, Richard Losick
Microfluidic technology overcomes many of the limitations to traditional analytical methods in microbiology. Unlike bulk-culture methods, it offers single-cell resolution and long observation times spanning hundreds of generations; unlike agarose pad-based microscopy, it has uniform growth conditions that can be tightly controlled. Because the continuous flow of growth medium isolates the cells in a microfluidic device from unpredictable variations in the local chemical environment caused by cell growth and metabolism, authentic changes in gene expression and cell growth in response to specific stimuli can be more confidently observed...
January 26, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29440817/quality-of-life-of-patients-with-chronic-kidney-disease-in-iran-systematic-review-and-meta-analysis
#12
REVIEW
Bahareh Ghiasi, Diana Sarokhani, Ali Hasanpour Dehkordi, Kourosh Sayehmiri, Mohammad Hossein Heidari
Introduction: Renal diseases are among the major health problems around the world that cause major changes in patients' lifestyle and affect their quality of lives. The aim of this study was to evaluate the quality of life of patients with chronic kidney disease (CKD) in Iran through a meta-analysis. Materials and Methods: This study was conducted using authentic Persian and English keywords in the national and international databases including IranMedex, SID, Magiran, IranDoc, Medlib, Science Direct, Pubmed, Scopus, Cochrane, Embase, Web of Science, and Medline...
January 2018: Indian Journal of Palliative Care
https://www.readbyqxmd.com/read/29439717/dysregulated-phosphorylation-of-rab-gtpases-by-lrrk2-induces-neurodegeneration
#13
Ga Ram Jeong, Eun-Hae Jang, Jae Ryul Bae, Soyoung Jun, Ho Chul Kang, Chi-Hu Park, Joo-Ho Shin, Yukio Yamamoto, Keiko Tanaka-Yamamoto, Valina L Dawson, Ted M Dawson, Eun-Mi Hur, Byoung Dae Lee
BACKGROUND: Mutations in leucine-rich repeat kinase 2 (LRRK2) are the most common cause of familial and sporadic Parkinson's disease (PD). Elevated kinase activity is associated with LRRK2 toxicity, but the substrates that mediate neurodegeneration remain poorly defined. Given the increasing evidence suggesting a role of LRRK2 in membrane and vesicle trafficking, here we systemically screened Rab GTPases, core regulators of vesicular dynamics, as potential substrates of LRRK2 and investigated the functional consequence of such phosphorylation in cells and in vivo...
February 13, 2018: Molecular Neurodegeneration
https://www.readbyqxmd.com/read/29437299/proneness-to-guilt-shame-and-pride-in-children-with-autism-spectrum-disorders-and-neurotypical-children
#14
Denise Davidson, Elizabeth Hilvert, Ieva Misiunaite, Michael Giordano
Self-conscious emotions (e.g., guilt, shame, and pride) are complex emotions that require self-reflection and self-evaluation, and are thought to facilitate the maintenance of societal norms and personal standards. Despite the importance of self-conscious emotions, most research has focused on basic emotion processing in children with Autism Spectrum Disorders (ASD). Therefore, in the present study, we used the Test of Self-Conscious Affect for Children (TOSCA-C) to assess proneness to, or propensity to experience, the self-conscious emotions guilt, shame, and pride in children with ASD and neurotypical children...
February 13, 2018: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/29437270/clinicians-attitudes-and-approaches-to-evaluating-the-potential-living-kidney-donor-recipient-relationship-an-interview-study
#15
Angelique F Ralph, Phyllis Butow, Jonathan C Craig, Jeremy R Chapman, John S Gill, John Kanellis, Allison Tong
AIM: Careful assessment of the potential donor-recipient relationship is recommended by guidelines to prevent undue coercion, and ensure realistic expectations and genuine motivations. However, relationships are complex, nuanced and value-laden, and can be challenging to evaluate in living kidney donation. We aimed to describe the attitudes and approaches of transplant clinicians towards assessing the relationship between potential living kidney donors and their recipients. METHODS: Semi-structured interviews were conducted with 54 transplant clinicians (nephrologists, surgeons, coordinators, social workers, psychiatrists and psychologists) from 32 transplant centres across nine countries including Australia, United States, Canada and New Zealand...
February 13, 2018: Nephrology
https://www.readbyqxmd.com/read/29436536/quantum-dots-for-a-high-throughput-pfu-polymerase-based-multi-round-polymerase-chain-reaction-pcr
#16
Fuming Sang, Zhizhou Zhang, Lin Yuan, Deli Liu
Multi-round PCR is an important technique for obtaining enough target DNA from rare DNA resources, and is commonly used in many fields including forensic science, ancient DNA analysis and cancer research. However, multi-round PCR is often aborted, largely due to the accumulation of non-specific amplification during repeated amplifications. Here, we developed a Pfu polymerase based multi-round PCR technique assisted by quantum dots (QDs). Different PCR assays, DNA polymerases (Pfu and Taq), DNA sizes and GC amounts were compared in this study...
February 13, 2018: Analyst
https://www.readbyqxmd.com/read/29434175/can-hybrid-educational-activities-of-team-and-problem-based-learning-program-be-effective-for-japanese-medical-students
#17
Kentaro Iwata, Asako Doi
BACKGROUND: The purpose of this study is to investigate the medical students'perceptions of the Hybrid Educational Activities between team based learning (TBL) and problem based learning (PBL) Program (HEATAPP), a novel educational program that combines characteristics of PBL and TBL. METHODS: A five-day HEATAPP on infectious diseases was provided to 4th year medical students at Kobe University School of Medicine, Kobe, Japan. After the program, a focus group discussion was held among 6 medical students who participated in HEATAPP...
November 10, 2017: Kobe Journal of Medical Sciences
https://www.readbyqxmd.com/read/29433536/salinomycin-as-an-autophagy-modulator-a-new-avenue-to-anticancer-a-review
#18
REVIEW
Jiang Jiang, Hailong Li, Eskandar Qaed, Jing Zhang, Yushu Song, Rong Wu, Xinmiao Bu, Qinyan Wang, Zeyao Tang
Since Salinomycin (Sal) emerged its ability to target breast cancer stem cells in 2009, numerous experiments have been carried out to test Sal's anticancer effects. What deserve to be mentioned is that Sal can efficiently induce proliferation inhibition, cell death and metastasis suppression against human cancers from different origins both in vivo and in vitro without causing serious side effects as the conventional chemotherapeutical drugs on the body. There may be novel cell death pathways involving the anticancer effects of Sal except the conventional pathways, such as autophagic pathway...
February 13, 2018: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/29433263/novel-diagnostic-tools-for-asian-apis-cerana-and-european-apis-mellifera-honey-authentication
#19
Sónia Soares, Liliana Grazina, Isabel Mafra, Joana Costa, M Alice Pinto, Hanh Pham Duc, M Beatriz P P Oliveira, Joana S Amaral
Honey can be produced by different species of honeybees, with two being of economic importance due to their use in apiculture, namely Apis mellifera (known as European honeybee) and Apis cerana (known as Asian honeybee). Due to the decline of the wild populations of the Asian honeybee, this honey generally attains much higher market value, being prone to adulteration. This work aims at proposing new tools, based on the use of molecular markers, for the entomological authentication of honey. To this end, new species-specific primers were designed targeting the tRNAleu-cox2 intergenic region and allowing the detection of A...
March 2018: Food Research International
https://www.readbyqxmd.com/read/29432491/clonal-chromosomal-and-genomic-instability-during-human-multipotent-mesenchymal-stromal-cells-long-term-culture
#20
Victoria Nikitina, Tatiana Astrelina, Vladimir Nugis, Aleksandr Ostashkin, Tatiana Karaseva, Ekaterina Dobrovolskaya, Dariya Usupzhanova, Yulia Suchkova, Elena Lomonosova, Sergey Rodin, Vitaliy Brunchukov, Stanislav Lauk-Dubitskiy, Valentin Brumberg, Anastasia Machova, Irina Kobzeva, Andrey Bushmanov, Aleksandr Samoilov
BACKGROUND AIMS: Spontaneous mutagenesis often leads to appearance of genetic changes in cells. Although human multipotent mesenchymal stromal cells (hMSC) are considered as genetically stable, there is a risk of genomic and structural chromosome instability and, therefore, side effects of cell therapy associated with long-term effects. In this study, the karyotype, genetic variability and clone formation analyses have been carried out in the long-term culture MSC from human gingival mucosa...
2018: PloS One
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