Read by QxMD icon Read


Ana V Ferreira, Ilana Perelshtein, Nina Perkas, Aharon Gedanken, Joana Cunha, Artur Cavaco-Paulo
Chronic wound fluids have elevated concentration of human neutrophil elastase (HNE) which can be used as inflammation/infection marker. Our goal is to develop functional materials for fast diagnosis of wound inflammation/infection by using HNE as a specific marker. For that, fluorogenic peptides with a HNE-specific cleavage sequence were incorporated into traditional textile dressings, to allow real-time detection of the wound status. Two different fluorogenic approaches were studied in terms of intensity of the signal generated upon HNE addition: a fluorophore 7-amino-4-trifluormethylcoumarin (AFC) conjugated to a HNE-specific peptide and two fluorophore/quencher pairs (FAM/Dabcyl and EDANS/Dabcyl) coupled to a similar peptide as a Förster resonance energy transfer (FRET) strategy...
October 15, 2016: Applied Microbiology and Biotechnology
Jing Xu, Yanjun Wang, Luzhu Yang, Yanfang Gao, Baoxin Li, Yan Jin
Human telomerase RNA (hTR), works as a template for synthesis of telomeric DNA repeats at the ends of linear eukaryotic chromosomes, is overexpressed in tumor cells and its concentration has a positive correlation with telomerase activity. The lack of facile and reliable method for detection of hTR in complex matric limited its application for clinical diagnosis. To address the limitation, herein, we proposed a facile and reliable flow cytometric assay for sensitive and specific detection of hTR by combing magnetic enrichment with signal amplification of DNA toehold strand displacement reaction (TSDR)...
August 13, 2016: Biosensors & Bioelectronics
Hongjun Chen, Zicheng Yu, Zhijuan Cao, Choiwan Lau
Magnetic bead (MB)-based chemiluminescence (CL) ELISA can be a sample-thrifty, time-saving tool for evaluation of cigarette smoke-induced DNA single-strand breaks (SSBs) with high specificity. This article describes a novel approach using immobilized oligonucleotide on MBs to determine cigarette smoke-induced DNA SSBs and screen some protective natural compounds. Typically, fluorescein-labeled DNA (FAM-DNA) was immobilized on the MBs and then oxidized by the smoke in the absence or presence of natural compounds, and a part of FAM-DNA was fragmented due to cigarette smoke-induced DNA SSB and then detached from MBs whereas other non-broken FAM-DNA still remained on MBs...
October 11, 2016: Analytical and Bioanalytical Chemistry
James Whitworth, Brian Stausbøl-Grøn, Anne-Bine Skytte
When faced with an unusual clinical feature in a patient with a Mendelian disorder, the clinician may entertain the possibilities of either the feature representing a novel manifestation of that disorder or the co-existence of a different inherited condition. Here we describe an individual with a submandibular oncocytoma, pulmonary bullae and renal cysts as well as multiple cerebral cavernous malformations and haemangiomas. Genetic investigations revealed constitutional mutations in FLCN, associated with Birt-Hogg-Dubé syndrome (BHD) and CCM2, associated with familial cerebral cavernous malformation...
October 8, 2016: Familial Cancer
Dmitry A Tsybulsky, Maksim V Kvach, Dmitry Y Ryazantsev, Ilya O Aparin, Alexander A Stakheev, Igor A Prokhorenko, Yury V Martynenko, Sergey V Gontarev, Andrey A Formanovsky, Timofei S Zatsepin, Vadim V Shmanai, Vladimir A Korshun, Sergey K Zavriev
Molecular beacons carrying JOE dye (4',5'-dichloro-2',7'-dimethoxy-6-carboxyfluorescein) on a rigid or flexible linker and one or two BHQ1 quenchers have been prepared and tested in real-time PCR using Fusarium avenaceum elongation factor 1α DNA template. The probes were different in their structures (loop size and stem length), linkers for dye attachment (6-aminohexanol or trans-4-aminocyclohexanol), quencher composition (single and double BHQ1) to elucidate the influence of all these features. Fluorogenic properties of the probes were studied and compared to those of FAM (fluorescein)-based probes...
October 6, 2016: Molecular and Cellular Probes
Jiang Ming Fam, Johannes N van Der Sijde, Antonios Karanasos, Cordula Felix, Roberto Diletti, Nicolas van Mieghem, Peter de Jaegere, Felix Zijlstra, Robert Jan van Geuns, Evelyn Regar
OBJECTIVES: The acute expansion of bioresorbable vascular scaffolds (BRS) and drug-eluting stents (DES) in lesions with different extent of calcification was compared by Optical Coherence Tomography (OCT). BACKGROUND: The acute mechanical performance of polymeric BRS in calcified lesions is poorly understood. METHODS: Acute device performance in lesions treated with either BRS(N = 50) or DES (N = 50) was compared using Optical Coherence Tomography (OCT)...
October 7, 2016: Catheterization and Cardiovascular Interventions
Nicholas E Larkey, Lulu Zhang, Shan S Lansing, Victoria Tran, Victoria L Seewaldt, Sean M Burrows
Many studies have found that over- or under-expression of biomolecules called microRNAs (miRNA) regulates several diseases. Biosensors are in need to visually identify the relative expression level of miRNA to determine the direction these miRNA change in cells and tissues. Our established reporter+probe miRNA biosensor design requires that miRNA outcompete and displace the reporter from the probe. Once displaced, the reporter folds into a hairpin structure to force together a pair of Förster Resonance Energy Transfer (FRET) dyes...
September 22, 2016: Analyst
J K Lowry, A A Myers
A new senticaudate amphipod family, Zaramillidae is described from the subantarctic Kerguelen Islands, based on the genus Zaramilla Stebbing, 1888. It is placed in the gammaridiran amphipods.
September 20, 2016: Zootaxa
Xiang-Kui Fan, Rui-Hua Yan, Xiang-Qun Geng, Jing-Shan Li, Xiang-Ming Chen, Jian-Zhe Li
In the present study, to investigate the expression of PinX1 gene and its functional effects in human esophageal carcinoma (Eca)-109 cell line, expression vectors of human PinX1 (pEGFP-C3-PinX1) and its small interfering RNA (PinX1-FAM-siRNA) were constructed and transfected into Eca-109 cells using Lipofectamine 2000. Firstly, the mRNA expression level of PinX1 was examined using reverse transcription-polymerase chain reaction (RT-PCR). Once successful transfection was achieved, the effects on the mRNA level of human telomerase reverse transcriptase (hTERT), telomerase activity, cell proliferation and apoptosis were examined by semi-quantitative RT-PCR, stretch PCR, MTT assay and flow cytometry, respectively...
October 2016: Experimental and Therapeutic Medicine
Zhongxiang Dai, Yu Chen, Junhua Li, Johnson Fam, Anastasios Bezerianos, Yu Sun
Numerous real-world systems can be modeled as networks. To date, most network studies have been conducted assuming stationary network characteristics. Many systems, however, undergo topological changes over time. Temporal networks, which incorporate time into conventional network models, are therefore more accurate representations of such dynamic systems. Here, we introduce a novel generalized analytical framework for temporal networks, which enables 1) robust evaluation of the efficiency of temporal information exchange using two new network metrics and 2) quantitative inspection of the temporal small-worldness...
September 29, 2016: Scientific Reports
Li Yi Lim, Che Ani Mohd Firdaus, Xeng Inn Fam, Eng Hong Goh
Computed tomography (CT) is a widely used imaging modality. Although hyponatremia after CT imaging is rare, its effects can be devastating. Hyperosmolar radiocontrast acts as effective osmoles and causes fluid migration from intracellular into extracellular compartment. Dilutional hyponatremia will ensue if translocation of fluid is in excess of diuresis. This case report detailed an unusual case of acute symptomatic hyponatremia after CT renal protocol and the treatments given after its recognition.
September 27, 2016: Journal of Computer Assisted Tomography
François Leroy, Alexis Ruet, Antoine Desvergee, Pamela Le Magnen, Jean Marie Durand
Disabled people see, as the general population, increased life expectancy. The advanced age of the disabled person is reflected by two characteristics: the occurrence of new disabilities related to age per se but also a possible increase of previous impairments. This summation of the effects must be known, recognized and anticipated. Following the work coordinated by Patrick Gohet, we investigated the responses to date on the following topics included in the national report: anticipation of the phenomenon, prevention of consequences, marking the onset of the effects of advanced age, accompanying the installation of the effects of this advanced age...
September 2016: Annals of Physical and Rehabilitation Medicine
Johanna Morgounovski, Philippe Vuistiner, Bertrand Léger, François Luthi
OBJECTIVE: The fear-avoidance model (FAM) is commonly used in musculoskeletal chronic pain (Vlaeyen 2012). Nevertheless, only few prospective studies have been conducted, especially on return to work (RTW). This study lays the hypothesis that the components of the FAM (catastrophizing, kinesiophobia and depression) can predict RTW 1 year after a vocational rehabilitation for orthopedic trauma patients. MATERIAL/PATIENTS AND METHODS: A total of 323 rehab orthopedic trauma inpatients (average time after accident: 9 months) were included...
September 2016: Annals of Physical and Rehabilitation Medicine
Silvia Pescina, Marina Sala, Cristina Padula, Maria Carmina Scala, Antonia Spensiero, Silvana Belletti, Rita Gatti, Ettore Novellino, Pietro Campiglia, Patrizia Santi, Sara Nicoli, Carmine Ostacolo
The role of cell penetrating peptides (CPPs) has been challenged in recent years for drug delivery to ocular tissues for the targeting of both anterior and posterior segments. The enhancement of trans-corneal transport for anterior segment targeting is a very important issue possibly leading to important outcomes on efficacy and to the opportunity of topical administration of molecules with unfavorable penetration properties. The aim of the present work was the design and synthesis of new CPPs, deriving from the structure of PEP-1 peptide...
October 4, 2016: Molecular Pharmaceutics
Hisako Ibaraki, Takanori Kanazawa, Yuuki Takashima, Hiroaki Okada, Yasuo Seta
As a new category of therapeutics for skin diseases including atopic dermatitis (AD), nucleic acids are gaining importance in the clinical setting. Intradermal administration is noninvasive and improves patients' quality of life. However, intradermal small interfering RNA (siRNA) delivery is difficult because of two barriers encountered in the skin: intercellular lipids in the stratum corneum and tight junctions in the stratum granulosum. Tight junctions are the major barrier in AD; therefore, we focused on functional peptides to devise an intradermal siRNA delivery system for topical skin application...
2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Olga Arkova, Nikita Kuznetsov, Olga Fedorova, Ludmila Savinkova
It is known that only a single-nucleotide substitution (SNP: a single nucleotide polymorphism) in the sequence of a TATA box can influence the affinity of the interaction of TBP with the TATA box and contribute to the pathogenesis of complex hereditary human diseases and sometimes may be a cause of monogenic diseases (for instance, β-thalassemia).. In the present work, we studied the interaction of human TBP with a double-stranded oligodeoxyribonucleotide (ODN) 15 or 26 bp long identical to a TATA box of promoters of a real-life human gene, TPI or LEP, and labeled with fluorophores TAMRA and FAM...
September 25, 2016: Journal of Biomolecular Structure & Dynamics
Isa Abdi, Kourosh Taheri Talesh, Javad Yazdani, Sareh Keshavarz Meshkin Fam, Mohammad Ali Ghavimi, Seyed Ahmad Arta
Background. The inferior alveolar canal should be examined as a significant anatomical landmark, particularly in the posterior body and ramus of the mandible, for dental and surgical procedures. In the present study, the effects of two pathological lesions, ameloblastoma and keratocystic odontogenic tumor, on canal displacement were investigated. Methods. This study had a single-blinded design. Twenty-six patients with lesions in the mandible referred to Imam Reza Hospital, Tabriz, Iran, were studied in two equal groups (13 patients with a histopathological diagnosis of ameloblastoma and 13 with a histopathological diagnosis of odontogenic keratocyst)...
2016: Journal of Dental Research, Dental Clinics, Dental Prospects
Andy Dworkin, David S H Lee, Amber R An, Sarah J Goodlin
OBJECTIVES: To identify a quick clinical tool to assess the risk of delirium after elective surgery. DESIGN: Prospective observational study. SETTING: Preoperative assessment clinic at the Veterans Affairs Portland Health Care System. PARTICIPANTS: Community-living veterans aged 65 and older scheduled for elective surgery requiring general or major anesthesia. MEASUREMENTS: Confusion Assessment Method (CAM) or Family Confusion Assessment Method (FAM-CAM)...
September 21, 2016: Journal of the American Geriatrics Society
Alice Labaronne, Christopher Swale, Alexandre Monod, Guy Schoehn, Thibaut Crépin, Rob W H Ruigrok
This paper describes a biochemical study for making complexes between the nucleoprotein of influenza viruses A and B (A/NP and B/NP) and small RNAs (polyUC RNAs from 5 to 24 nucleotides (nt)), starting from monomeric proteins. We used negative stain electron microscopy, size exclusion chromatography-multi-angle laser light scattering (SEC-MALLS) analysis, and fluorescence anisotropy measurements to show how the NP-RNA complexes evolve. Both proteins make small oligomers with 24-nt RNAs, trimers for A/NP, and dimers, tetramers, and larger complexes for B/NP...
2016: Viruses
Vanessa M Howieson, Elisa Tran, Annabelle Hoegl, Han Ling Fam, Jonathan Fu, Kate Sivonen, Xiao Xuan Li, Karine Auclair, Kevin J Saliba
The biosynthesis of CoA from pantothenate and the utilization of CoA in essential biochemical pathways represent promising antimalarial drug targets. Pantothenamides, amide-bearing pantothenate analogues, have potential as antimalarials, but a serum enzyme called pantetheinase degrades pantothenamides, rendering them inactive in vivo In this study we characterize a series of 19 compounds that mimic pantothenamides with a stable triazole group instead of the labile amide. Two of these pantothenamides are active against the intraerythrocytic stage parasite with IC50 values of ∼50 nM and three others have sub-micromolar IC50 values...
September 19, 2016: Antimicrobial Agents and Chemotherapy
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"