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https://www.readbyqxmd.com/read/28823090/epidural-patch-with-autologous-platelet-rich-plasma-a-novel-approach
#1
Berrin Gunaydin, Muberra Acar, Gokcen Emmez, Didem Akcali, Nil Tokgoz
We aimed to perform an epidural patch using platelet rich plasma (PRP), which has the potential to regenerate and heal tissues via degranulation of platelets, in a 34-year-old parturient suffering from persistent post-dural puncture headache (PDPH) after failed epidural blood patch (EBP). After her admission to our unit, we reconfirmed the clinical and radiologic diagnosis of PDPH. Cranial MRI with contrast showed diffuse pachymeningeal thickening and contrast enhancement with enlarged pituitary consistent with intracranial hypotension...
August 19, 2017: Journal of Anesthesia
https://www.readbyqxmd.com/read/28822854/involvement-of-cyclic-nucleotide-gated-channels-in-spontaneous-activity-generated-in-isolated-interstitial-cells-of-cajal-from-the-rabbit-urethra
#2
Maria Sancho, Eamonn Bradley, Angeles Garcia-Pascual, Domingo Triguero, Keith D Thornbury, Mark A Hollywood, Gerard P Sergeant
Cyclic nucleotide-gated (CNG) channels are non-selective cation channels that mediate influx of extracellular Na(+) and Ca(2+) in various cell types. L-cis-Diltiazem, a CNG channel blocker, inhibits contraction of urethral smooth muscle (USM), however the mechanisms underlying this effect are still unclear. We investigated the possibility that CNG channels contribute to spontaneous pacemaker activity in freshly isolated interstitial cells of Cajal (ICC) isolated from the rabbit urethra (RUICC). Using immunocytochemistry, we found intense CNG1-immunoreactivity in vimentin-immunoreactive RUICC, mainly within patches of the cellular body and processes...
August 16, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28822716/contrast-effects-on-speed-perception-for-linear-and-radial-motion
#3
Rebecca A Champion, Paul A Warren
Speed perception is vital for safe activity in the environment. However, considerable evidence suggests that perceived speed changes as a function of stimulus contrast, with some investigators suggesting that this might have meaningful real-world consequences (e.g. driving in fog). In the present study we investigate whether the neural effects of contrast on speed perception occur at the level of local motion processing or more complex global motion configurations. To do this we examine both speed discrimination thresholds and contrast-dependent speed perception for two global motion configurations that have matched local spatio-temporal structure...
August 16, 2017: Vision Research
https://www.readbyqxmd.com/read/28822637/porcine-dermis-patch-augmentation-of-supraspinatus-tendon-repairs-a-pilot-study-assessing-tendon-integrity-and-shoulder-function-2%C3%A2-years-after-arthroscopic-repair-in-patients-aged-60%C3%A2-years-or%C3%A2-older
#4
Matthias Flury, Dominik Rickenbacher, Christian Jung, Marco M Schneider, David Endell, Laurent Audigé
PURPOSE: To investigate the 2-year postoperative clinical and subjective outcomes after arthroscopic rotator cuff repair (ARCR) with xenologous porcine dermal patch augmentation compared with ARCR alone. METHODS: Patients aged 60 years or older with a complete supraspinatus (SSP) tendon tear underwent primary ARCR with a transosseous-equivalent technique. By use of a matched-pair comparative trial design, a consecutive series of 20 patients receiving additional xenologous porcine dermal patch augmentation (patch group) was matched by tear location with 20 patients who received ARCR only (control group)...
August 16, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28821787/analysis-of-spatial-genetic-variation-reveals-genetic-divergence-among-populations-of-primula-veris-associated-to-contrasting-habitats
#5
Pablo Deschepper, Rein Brys, Miguel A Fortuna, Hans Jacquemyn
Genetic divergence by environment is a process whereby selection causes the formation of gene flow barriers between populations adapting to contrasting environments and is often considered to be the onset of speciation. Nevertheless, the extent to which genetic differentiation by environment on small spatial scales can be detected by means of neutral markers is still subject to debate. Previous research on the perennial herb Primula veris has shown that plants from grassland and forest habitats showed pronounced differences in phenology and flower morphology, suggesting limited gene flow between habitats...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821615/distinct-structural-mechanisms-determine-substrate-affinity-and-kinase-activity-of-protein-kinase-c%C3%AE
#6
Sangbae Lee, Titu Devamani, Hyun Deok Song, Manbir Sandhu, Adrien Larsen, Ruth Sommese, Abhinandan Jain, Nagarajan Vaidehi, Sivaraj Sivaramakrishnan
Protein kinase Cα (PKCα) belongs to the family of AGC kinases that phosphorylate multiple peptide substrates. While the consensus sequence motif has been identified and used to explain substrate specificity for PKCα, it does not inform the structural basis of substrate binding and kinase activity for diverse substrates phosphorylated by this kinase. The transient, dynamic, and unstructured nature of this protein-protein interaction has limited structural mapping of kinase-substrate interfaces. Here, using multiscale MD simulation-based predictions and FRET sensor-based experiments, we investigated the conformational dynamics of the kinase-substrate interface...
August 15, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28821455/rnase-hii-saves-rnha-mutant-escherichia-coli-from-r-loop-associated-chromosomal-fragmentation
#7
Elena A Kouzminova, Farid F Kadyrov, Andrei Kuzminov
The rnhAB mutant E. coli, deficient in two RNase H enzymes that remove both R-loops and incorporated ribonucleotides (rNs) from DNA, grow slowly, suggesting accumulation of rN-containing DNA lesions (R-lesions). We report that the rnhAB mutants have reduced viability, form filaments with abnormal nucleoids, induce SOS and fragment their chromosome, revealing replication and/or segregation stress. R-loops are known to interfere with replication forks, and sensitivity of the double rnhAB mutants to translation inhibition points to R-loops as precursors for R-lesions...
August 15, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28821152/the-common-lavender-lavandula-angustifolia-mill-pectic-polysaccharides-modulate-phagocytic-leukocytes-and-intestinal-peyer-s-patch-cells
#8
Yordan N Georgiev, Berit S Paulsen, Hiroaki Kiyohara, Milan Ciz, Manol H Ognyanov, Ondrej Vasicek, Frode Rise, Petko N Denev, Haruki Yamada, Antonin Lojek, Vesselin Kussovski, Hilde Barsett, Albert I Krastanov, Irina Z Yanakieva, Maria G Kratchanova
Two pectic (chPS-L1, chPS-L2) and one polyphenolic (chPP-L) fractions were obtained from lavender flowers after boiling water extraction, exhaustive removing of alcohol-soluble molecules and SEC. chPS-L1 (52.4kDa) contains mainly low-acetylated and high-methoxylated homogalacturonans (HG), and smaller rhamnogalacturonan (RG) I backbone fragments rich in 1,3,5-branched arabinan and arabinogalactan (AG) II side chains. chPS-L2 (21.8kDa) contains predominantly similarly esterified HG, followed by RGI with AGII structures and RGII...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28820891/scene-text-detection-via-extremal-region-based-double-threshold-convolutional-network-classification
#9
Wei Zhu, Jing Lou, Longtao Chen, Qingyuan Xia, Mingwu Ren
In this paper, we present a robust text detection approach in natural images which is based on region proposal mechanism. A powerful low-level detector named saliency enhanced-MSER extended from the widely-used MSER is proposed by incorporating saliency detection methods, which ensures a high recall rate. Given a natural image, character candidates are extracted from three channels in a perception-based illumination invariant color space by saliency-enhanced MSER algorithm. A discriminative convolutional neural network (CNN) is jointly trained with multi-level information including pixel-level and character-level information as character candidate classifier...
2017: PloS One
https://www.readbyqxmd.com/read/28820213/chip-scale-alignment-of-long-dna-nanofibers-on-a-patterned-self-assembled-monolayer
#10
J Xia, M Su
Controlled alignment of long DNA nanofibers is challenging. This communication reports a method to align human genomic DNA with nearly unlimited length using lithographically produced micro-patterns of self-assembled monolayers (SAMs) with positively charged terminal groups. The micro-patterns act as local DNA reservoirs to supply DNAs for nanofiber formation, and can also stretch and align DNA nanofibers to form an ordered array by controlling the dewetting profile. By reducing the size and inter-patch distance of a micro-patch, a nearly uniform array of long DNA nanofibers can be patterned over a large area...
August 18, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28819879/lower-extremity-bypass-using-bovine-carotid-artery-graft-artegraft-an-analysis-of-124-cases-with-long-term-results
#11
Philip Lindsey, Angela Echeverria, Mathew Cheung, Elias Kfoury, Carlos F Bechara, Peter H Lin
INTRODUCTION: Although biological grafts have been utilized as a vascular conduit in leg bypass for many years, reports of a bovine carotid artery graft (BCAG) in lower extremity revascularization have been scarce. This study analyzed the outcome of lower leg bypass using BCAG. METHODS: A retrospective review of a prospectively collected database of all patients undergoing lower extremity bypass using BCAG from 2002 to 2017 was performed. Clinical outcomes including graft patency and limb salvage were evaluated...
August 17, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28819738/high-dose-8-capsaicin-patch-in-treatment-of-chemotherapy-induced-peripheral-neuropathy-single-center-experience
#12
Iwona Filipczak-Bryniarska, Roger M Krzyzewski, Jakub Kucharz, Anna Michalowska-Kaczmarczyk, Justyna Kleja, Jarosław Woron, Katarzyna Strzepek, Lucyna Kazior, Jerzy Wordliczek, Tomasz Grodzicki, Krzysztof Krzemieniecki
High-dose capsaicin patch is effective in treatment of neuropathic pain in HIV-associated neuropathy and diabetic neuropathy. There are no studies assessing effectiveness of high-dose capsaicin patch in treatment of chemotherapy-induced peripheral neuropathy. We sought to determine the effectiveness of treatment of pain associated with chemotherapy-induced peripheral neuropathy with high-dose capsaicin patch. Our study group consisted of 18 patients with clinically confirmed oxaliplatin-induced neuropathy. Baseline characteristic including underling disease, received cumulative dose of neurotoxic agent, neuropathic symptoms, prior treatment and initial pain level were recorded...
August 17, 2017: Medical Oncology
https://www.readbyqxmd.com/read/28819688/airway-reconstruction-using-decellularized-tracheal-allografts-in-a-porcine-model
#13
Michinobu Ohno, Yasushi Fuchimoto, Huai-Che Hsu, Masataka Higuchi, Makoto Komura, Tetsuji Yamaoka, Akihiro Umezawa, Shin Enosawa, Tatsuo Kuroda
PURPOSE: Tracheal cartilage reconstruction is an essential approach for the treatment of tracheal congenital abnormalities or injury. Here, we evaluated the use of allogeneic decellularized tracheas as novel support scaffolds. METHODS: Six weaned pigs (4-week-old domestic males) were transplanted with allogeneic tracheal graft patches (three decellularized and three fresh tracheal scaffolds) onto artificial defects (approximately 15 × 15 mm). After 11 weeks, the tracheas were evaluated by bronchoscopy and histological studies...
August 17, 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/28819642/from-the-generalized-reflection-law-to-the-realization-of-perfect-anomalous-reflectors
#14
Ana Díaz-Rubio, Viktar S Asadchy, Amr Elsakka, Sergei A Tretyakov
The use of the generalized Snell's law opens wide possibilities for the manipulation of transmitted and reflected wavefronts. However, known structures designed to shape reflection wavefronts suffer from significant parasitic reflections in undesired directions. We explore the limitations of the existing solutions for the design of passive planar reflectors and demonstrate that strongly nonlocal response is required for perfect performance. A new paradigm for the design of perfect reflectors based on energy surface channeling is introduced...
August 2017: Science Advances
https://www.readbyqxmd.com/read/28819449/self-assembly-dna-polyplex-vaccine-inside-dissolving-microneedles-for-high-potency-intradermal-vaccination
#15
Jing-Fong Liao, Jin-Ching Lee, Chun-Kuang Lin, Kuo-Chen Wei, Pin-Yuan Chen, Hung-Wei Yang
The strong immunogenicity induction is the powerful weapon to prevent the virus infections. This study demonstrated that one-step synthesis of DNA polyplex vaccine in microneedle (MN) patches can induce high immunogenicity through intradermal vaccination and increase the vaccine stability for storage outside the cold chain. More negative charged DNA vaccine was entrapped into the needle region of MNs followed by DNA polyplex formation with branched polyethylenimine (bPEI) pre-coated in the cavities of polydimethylsiloxane (PDMS) molds that can deliver more DNA vaccine to immune-cell rich epidermis with high transfection efficiency...
2017: Theranostics
https://www.readbyqxmd.com/read/28818560/rotigotine-for-nocturnal-hypokinesia-in-parkinson-s-disease-quantitative-analysis-of-efficacy-from-a-randomized-placebo-controlled-trial-using-an-axial-inertial-sensor
#16
Roongroj Bhidayasiri, Jirada Sringean, Suchapit Chaiwong, Chanawat Anan, Nuntiwat Penkeaw, Amarinee Leaknok, Kamolwan Boonpang, Karn Saksornchai, Watchara Rattanachaisit, Chusak Thanawattano, Priya Jagota
BACKGROUND: Nocturnal hypokinesia is a common symptom in Parkinson's disease (PD), negatively affecting quality of life of both patients and caregivers. However, evidence-based treatment strategies are limited. OBJECTIVE: To evaluate the efficacy of rotigotine transdermal patch, using a wearable sensor, in the management of nocturnal immobility. METHODS: 34 PD subjects with nocturnal immobility were randomized to receive rotigotine transdermal patch (mean ± SD of 10...
August 9, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28818004/identification-and-treatment-of-augmentation-in-patients-with-restless-legs-syndrome-practical-recommendations
#17
James Geyer, Richard Bogan
Restless legs syndrome (RLS) is a chronic disorder causing clinically significant discomfort to approximately 3% of adults. Although RLS was first identified centuries ago, our understanding of this disorder, its causes, and its treatments is still evolving. In particular, our knowledge of the potential negative effects of RLS treatments, including dopaminergic augmentation, continues to expand. Augmentation, which refers to a paradoxical treatment-related increase in RLS symptoms, has been associated with all three dopamine agonists approved for the treatment of RLS - rotigotine, pramipexole, and ropinirole...
August 18, 2017: Postgraduate Medicine
https://www.readbyqxmd.com/read/28817864/tobacco-cessation-strategies-it-takes-a-village
#18
Debbie Anne Chiu Qua
Smoking is the leading cause of preventable death and chronic diseases in the U.S. Identifying smokers and providing appropriate intervention is therefore an integral part of each clinic visit. A combination of pharmacotherapy as well as behavioral counseling provides the best results. Pharmacotherapy includes nicotine replacement (patch, gum, lozenges), bupropion and varenicline. More recently, electronic nicotinic delivery systems (such as e-cigarettes, vaporizers/vape pens, and hookah pens) have become popular...
2017: South Dakota Medicine: the Journal of the South Dakota State Medical Association
https://www.readbyqxmd.com/read/28817816/exosomes-derived-from-human-bone-marrow-mesenchymal-stem-cells-promote-tumor-growth-through-hedgehog-signaling-pathway
#19
Jin Qi, Yali Zhou, Zuoyi Jiao, Xu Wang, Yang Zhao, Yangbin Li, Huijuan Chen, Luxi Yang, Hongwen Zhu, Yumin Li
BACKGROUND/AIMS: Mesenchymal stem/stromal cells (MSCs) are known to home to sites of tumor microenvironments where they participate in the formation of the tumor microenvironment and to interplay with tumor cells. However, the potential functional effects of MSCs on tumor cell growth are controversial. Here, we, from the view of bone marrow MSC-derived exosomes, study the molecular mechanism of MSCs on the growth of human osteosarcoma and human gastric cancer cells. METHODS: MSCs derived from human bone marrow (hBMSCs) were isolated and cultured in complete DMEM/F12 supplemented with 10% exosome-depleted fetal bovine serum and 1% penicillin-streptomycin, cell culture supernatants containing exosomes were harvested and exosome purification was performed by ultracentrifugation...
August 16, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28817613/diflunisal-inhibits-prestin-by-chloride-dependent-mechanism
#20
Guillaume Duret, Fred A Pereira, Robert M Raphael
The motor protein prestin is a member of the SLC26 family of anion antiporters and is essential to the electromotility of cochlear outer hair cells and for hearing. The only direct inhibitor of electromotility and the associated charge transfer is salicylate, possibly through direct interaction with an anion-binding site on prestin. In a screen to identify other inhibitors of prestin activity, we explored the effect of the non-steroid anti-inflammatory drug diflunisal, which is a derivative of salicylate. We recorded prestin activity by whole-cell patch clamping HEK cells transiently expressing prestin and mouse outer hair cells...
2017: PloS One
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