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https://www.readbyqxmd.com/read/29778832/glucocorticoid-metabolites-in-newborns-a-marker-for-traffic-noise-related-stress
#1
Manuella Lech Cantuaria, Jakob Usemann, Elena Proietti, Victoria Blanes-Vidal, Bernhard Dick, Christa E Flück, Simone Rüedi, Harris Héritier, Jean-Marc Wunderli, Philipp Latzin, Urs Frey, Martin Röösli, Danielle Vienneau
BACKGROUND: Traffic noise has been associated with an increased risk for several non-auditory health effects, which may be explained by a noise-induced release of stress hormones (e.g. glucocorticoids). Although several studies in children and adults have indicated an increased secretion of glucocorticoids after exposure to noise, information regarding newborns is scarce. OBJECTIVES: To investigate the association between residential exposure to road traffic noise and postnatal stress response, as assessed by the concentration of glucocorticoids at five weeks of age...
May 17, 2018: Environment International
https://www.readbyqxmd.com/read/29777767/biglycan-is-a-new-high-affinity-ligand-for-cd14-in-macrophages
#2
Heiko Roedig, Madalina V Nastase, Helena Frey, Kristin Moreth, Jinyang Zeng-Brouwers, Chiara Poluzzi, Louise Tzung-Harn Hsieh, Christian Brandts, Simone Fulda, Malgorzata Wygrecka, Liliana Schaefer
Sterile inflammation is a therapeutic target in many diseases where it represents an important initiator of disease progression. However, the detailed mechanisms underlying its evolution and biological relevance are not yet completely elucidated. Biglycan, a prototype extracellular matrix-derived damage-associated molecular pattern, mediates sterile inflammation in macrophages through Toll-like receptor (TLR) 2 and/or TLR4-dependent signaling pathways. Here we discovered that soluble biglycan is a novel high-affinity ligand for CD14, a well-known GPI-anchored co-receptor for TLRs...
May 16, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29777255/inhibition-of-sialidase-activity-and-cellular-invasion-by-the-bacterial-vaginosis-pathogen-gardnerella-vaginalis
#3
G Govinden, J L Parker, K L Naylor, A M Frey, D O C Anumba, G P Stafford
Bacterial vaginosis is a genital tract infection, thought to be caused by transformation of a lactobacillus-rich flora to a dysbiotic microbiota enriched in mixed anaerobes. The most prominent of these is Gardnerella vaginalis (GV), an anaerobic pathogen that produces sialidase enzyme to cleave terminal sialic acid residues from human glycans. Notably, high sialidase activity is associated with preterm birth and low birthweight. We explored the potential of the sialidase inhibitor Zanamavir against GV whole cell sialidase activity using methyl-umbelliferyl neuraminic acid (MU-NANA) cleavage assays, with Zanamavir causing a 30% reduction in whole cell GV sialidase activity (p < 0...
May 18, 2018: Archives of Microbiology
https://www.readbyqxmd.com/read/29775003/-extracapsular-dissection-versus-superficial-parotidectomy-for-treatment-of-parotid-benign-tumors-evidence-based-medicine-analysis
#4
Z Y Jia, X Y Zhang, C B Jiang, Y Z Zhao, R Zhang, X H Fan, Y H Zhang
Objective: The aim of this study is to systematically assess the clinical outcomes of extracapsular dissection (ECD) and superficial parotidectomy (SP), and to provide evidences for the clinical decision for treatment of parotid gland benign tumors. Method: Relevant studies that compared the outcomes of extracapsular dissection and superficial parotidectomy for the parotid benign tumors were searched in Pubmed, CNKI and Wangfang data databases, and Meta-analysis was performed using software RevMan 5.0. Result: Fifteen studies were selected for the Meta-analysis...
June 5, 2017: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/29774960/alteration-of-nociceptive-integration-in-the-spinal-cord-of-a-rat-model-of-parkinson-s-disease
#5
Keri-Ann Charles, Frédéric Naudet, Rabia Bouali-Benazzouz, Marc Landry, Philippe De Deurwaerdère, Pascal Fossat, Abdelhamid Benazzouz
BACKGROUND: Pain is a major non motor symptom that contributes to impaired quality of life in PD. However, its mechanism is unknown. OBJECTIVES AND METHODS: We sought to identify the pain phenotypes and parallel changes in spinal integration of peripheral stimuli in a rat model of PD induced by lesions of SN dopamine neurons, using behavioral plantar and von Frey tests as well as electrophysiology of the dorsal horn. RESULTS: We show that dopamine depletion by 6-OHDA induced hypersensitivity to mechanical and thermal stimuli...
May 18, 2018: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/29772390/pathobiology-of-christianson-syndrome-linking-disrupted-endosomal-lysosomal-function-with-intellectual-disability-and-sensory-impairments
#6
Mallory Kerner-Rossi, Maria Gulinello, Steven Walkley, Kostantin Dobrenis
Christianson syndrome (CS) is a recently described rare neurogenetic disorder presenting early in life with a broad range of neurological symptoms, including severe intellectual disability with nonverbal status, hyperactivity, epilepsy, and progressive ataxia due to cerebellar atrophy. CS is due to loss-of-function mutations in SLC9A6, encoding NHE6, a sodium-hydrogen exchanger involved in the regulation of early endosomal pH. Here we review what is currently known about the neuropathogenesis of CS, based on insights from experimental models, which to date have focused on mechanisms that affect the CNS, specifically the brain...
May 14, 2018: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/29772245/ape1-ref-1-redox-function-contributes-to-inflammatory-pain-sensitization
#7
Amira Zaky, Rabia Bouali-Benazzouz, Alexandre Favereaux, Gianluca Tell, Marc Landry
Inflammatory pain is a complex and multifactorial disorder. Apurinic/apyrimidinic endonuclease 1 (APE1), also called Redox Factor-1 (Ref-1), is constitutively expressed in the central nervous system and regulates various cellular functions including oxidative stress. In the present study, we investigated APE1 modulation and associated pain behavior changes in the complete Freund's adjuvant (CFA) model of inflammatory pain in rats. In addition we tested the anti-inflammatory effects of E3330, a selective inhibitor of APE1-redox activity, in CFA pain condition...
May 14, 2018: Experimental Neurology
https://www.readbyqxmd.com/read/29771083/-the-clinical-assessment-of-regional-resection-in-the-benign-tumor-of-parotid-gland
#8
H B Gu, E M Zhao, T C Li, H Shen, T C Cong, Y Qin, Y H Liu, S F Xiao
Objective: To evaluate the clinical assessment of regional resection and superficial lobe total resection in the treatment of benign tumors of the parotid gland. Method: One hundred and nighty-five patients operated in the First Hospital of Peking University from January 1998 to March 2017 with benign tumor of the parotid gland were retrospectively analyzed. There were 189 patients with single side tumor and 6 patients with bilateral sides, 157 cases underwent regional resection and the other 44 cases underwent superficial lobe total resection...
May 2018: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/29770592/particles-of-vaterite-a-metastable-caco-3-polymorph-exhibit-high-biocompatibility-for-human-osteoblasts-and-endothelial-cells-and-may-serve-as-a-biomaterial-for-rapid-bone-regeneration
#9
Romina Schröder, Laura Besch, Hannah Pohlit, Martin Panthöfer, Wilfried Roth, Holger Frey, Wolfgang Tremel, Ronald E Unger
We have previously described a promising alternative to conventional synthetic bone biomaterials using vaterite, a metastable CaCO3 polymorph, that increases the local Ca2+ concentration in vitro and leads to an over-saturation of phosphate, the primary bone mineral. This stimulates a natural bone-like mineralization in a short period of time. In this study, sterile and endotoxin-free vaterite particles were synthesized in a nearly quantitative yield. The 500-1000 nm vaterite particles did not exhibit any cytotoxic effects as measured by MTT, LDH or crystal violet assays on the human osteoblast cell line (MG-63) exposed to concentrations up to 500 μg/ml vaterite up to 72 hr...
May 16, 2018: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29769713/author-correction-discovery-of-a-selective-catalytic-p300-cbp-inhibitor-that-targets-lineage-specific-tumours
#10
Loren M Lasko, Clarissa G Jakob, Rohinton P Edalji, Wei Qiu, Debra Montgomery, Enrico L Digiammarino, T Matt Hansen, Roberto M Risi, Robin Frey, Vlasios Manaves, Bailin Shaw, Mikkel Algire, Paul Hessler, Lloyd T Lam, Tamar Uziel, Emily Faivre, Debra Ferguson, Fritz G Buchanan, Ruth L Martin, Maricel Torrent, Gary G Chiang, Kannan Karukurichi, J William Langston, Brian T Weinert, Chunaram Choudhary, Peter de Vries, Arthur F Kluge, Michael A Patane, John H Van Drie, Ce Wang, David McElligott, Edward A Kesicki, Ronen Marmorstein, Chaohong Sun, Philip A Cole, Saul H Rosenberg, Michael R Michaelides, Albert Lai, Kenneth D Bromberg
In the originally published version of this Letter, the authors Arthur F. Kluge, Michael A. Patane and Ce Wang were inadvertently omitted from the author list. Their affiliations are: I-to-D, Inc., PO Box 6177, Lincoln, Massachusetts 01773, USA (A.F.K.); Mitobridge, Inc. 1030 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA (M.A.P.); and China Novartis Institutes for BioMedical Research, No. 4218 Jinke Road, Zhangjiang Hi-Tech Park, Pudong District, Shanghai 201203, China (C.W.). These authors contributed to the interpretation of results and design of compounds...
May 16, 2018: Nature
https://www.readbyqxmd.com/read/29769077/magnetic-field-distribution-modulation-of-intrathecal-delivered-ketorolac-iron-oxide-nanoparticle-conjugates-produce-excellent-analgesia-for-chronic-inflammatory-pain
#11
Ping-Ching Wu, Dar-Bin Shieh, Hung-Tsung Hsiao, Jeffery Chi-Fei Wang, Ya-Chi Lin, Yen-Chin Liu
BACKGROUND: Nanoparticles have become one of the most promising among the potential materials used for biomedical applications. However, few researchers have focused on their effects on analgesia. Despite the fact that various nanoparticles have been evaluated for drug delivery and MRI imaging contrast enhancement in clinical settings, no reports have investigated the in vivo synergy of ketorolac iron-oxide nanoparticle conjugates to improve the analgesic effect. METHODS: Ketorolac conjugated magnetic iron oxide nanoparticles (Keto-SPIO) were synthesized via two-stage additions of protective agents and chemical co-precipitation...
May 16, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29766208/-adequate-anti-infective-treatment-importance-of-individual-dosing-and-application
#12
A Brinkmann, A C Röhr, A Köberer, T Fuchs, W A Krüger, C König, D Richter, M A Weigand, O R Frey
Sepsis-induced changes in pharmacokinetic parameters are a well-known problem in intensive care medicine. Dosing of antibiotics in this setting is therefore challenging. Alterations to the substance-specific kinetics of anti-infective substances have an effect on the distribution and excretion processes in the body. Increased clearance and an increased distribution volume (Vd ) and particularly compromized organ function with reduced antibiotic elimination are often encountered in patients with sepsis. Renal replacement treatment, which is frequently used in intensive care medicine, represents a substantial intervention in this system...
May 15, 2018: Der Anaesthesist
https://www.readbyqxmd.com/read/29765941/nano-and-micro-patterned-s-h-and-x-pdms-for-cell-based-applications-comparison-of-wettability-roughness-and-cell-derived-parameters
#13
Marina Scharin-Mehlmann, Aaron Häring, Mathias Rommel, Tobias Dirnecker, Oliver Friedrich, Lothar Frey, Daniel F Gilbert
Polydimethylsiloxane (PDMS) is a promising biomaterial for generating artificial extracellular matrix (ECM) like patterned topographies, yet its hydrophobic nature limits its applicability to cell-based approaches. Although plasma treatment can enhance the wettability of PDMS, the surface is known to recover its hydrophobicity within a few hours after exposure to air. To investigate the capability of a novel PDMS-type (X-PDMS) for in vitro based assessment of physiological cell properties, we designed and fabricated plane as well as nano- and micrometer-scaled pillar-patterned growth substrates using the elastomer types S-, H- and X-PDMS, which were fabricated from commercially available components...
2018: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/29765323/up-down-reader-an-open-source-program-for-efficiently-processing-50-von-frey-thresholds
#14
Rafael Gonzalez-Cano, Bruno Boivin, Daniel Bullock, Laura Cornelissen, Nick Andrews, Michael Costigan
Most pathological pain conditions in patients and rodent pain models result in marked alterations in mechanosensation and the gold standard way to measure this is by use of von Frey fibers. These graded monofilaments are used to gauge the level of stimulus-evoked sensitivity present in the affected dermal region. One of the most popular methods used to determine von Frey thresholds is the up-down testing paradigm introduced by Dixon for patients in 1980 and by Chapman and colleagues for rodents in 1994. Although the up-down method is very accurate, leading to its widespread use, defining the 50% threshold from primary data is complex and requires a relatively time-consuming analysis step...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29763613/neuroprotective-effect-of-duloxetine-in-a-mouse-model-of-diabetic-neuropathy-role-of-glia-suppressing-mechanisms
#15
Mona K Tawfik, Seham A Helmy, Dahlia I Badran, Sawsan A Zaitone
AIMS: Painful diabetic neuropathy (PDN) is one of the most frequent complications of diabetes and the current therapies have limited efficacy. This study aimed to study the neuroprotective effect of duloxetine, a serotonin noradrenaline reuptake inhibitor (SNRI), in a mouse model of diabetic neuropathy. MAIN METHODS: Nine weeks after developing of PDN, mice were treated with either saline or duloxetine (15 or 30 mg/kg) for four weeks. The effect of duloxetine was assessed in terms of pain responses, histopathology of sciatic nerve and spinal cord, sciatic nerve growth factor (NGF) gene expression and on the spinal expression of astrocytes (glial fibrillary acidic protein, GFAP) and microglia (CD11 b)...
May 12, 2018: Life Sciences
https://www.readbyqxmd.com/read/29760019/innovations-in-primary-care-garage-tinkerers-and-great-deeds
#16
EDITORIAL
John J Frey
No abstract text is available yet for this article.
May 2018: Annals of Family Medicine
https://www.readbyqxmd.com/read/29759134/behavioural-alterations-and-morphological-changes-are-attenuated-by-the-lack-of-trpa1-receptors-in-the-cuprizone-induced-demyelination-model-in-mice
#17
Kata Bölcskei, Gábor Kriszta, Éva Sághy, Maja Payrits, Éva Sipos, Anett Vranesics, Zoltán Berente, Hajnalka Ábrahám, Péter Ács, Sámuel Komoly, Erika Pintér
We have recently reported that the Transient Receptor Potential Ankyrin 1 (TRPA1) receptor deficiency significantly attenuated cuprizone-induced demyelination by reducing the apoptosis of mature oligodendrocytes. The aim of the present study was to gather additional data on the role of TRPA1 by investigating the time course of behavioural alterations and morphological changes in cuprizone-treated TRPA1 receptor gene-deficient mice. Demyelination was induced by feeding male wild-type (WT) and TRPA1 gene-deleted (TRPA1 KO) mice with 0...
July 15, 2018: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/29758643/multiple-scales-in-metapopulations-of-public-goods-producers
#18
Marianne Bauer, Erwin Frey
Multiple scales in metapopulations can give rise to paradoxical behavior: in a conceptual model for a public goods game, the species associated with a fitness cost due to the public good production can be stabilized in the well-mixed limit due to the mere existence of these scales. The scales in this model involve a length scale corresponding to separate patches, coupled by mobility, and separate time scales for reproduction and interaction with a local environment. Contrary to the well-mixed high mobility limit, we find that for low mobilities, the interaction rate progressively stabilizes this species due to stochastic effects, and that the formation of spatial patterns is not crucial for this stabilization...
April 2018: Physical Review. E
https://www.readbyqxmd.com/read/29758164/biosynthesis-of-eupatolide-a-metabolic-route-for-sesquiterpene-lactone-formation-involving-the-p450-enzyme-cyp71dd6
#19
Maximilian Frey, Katharina Schmauder, Irini Pateraki, Otmar Spring
Sesquiterpene lactones are a class of natural compounds well-known for their bioactivity and are characteristic for the Asteraceae family. Most sesquiterpene lactones are considered derivatives of germacrene A acid (GAA). GAA can be stereo-specifically hydroxylated by the cytochrome P450 enzymes (CYP) Lactuca sativa costunolide synthase CYP71BL2 (LsCOS) and Helianthus annuus GAA 8-hydroxylase CYP71BL1 (HaG8H) at C6 (in -orientation) or C8 (in -orientation), respectively. Spontaneous subsequent lactonization of the resulting 6-hydroxy-GAA leads to costunolide, whereas 8-hydroxy-GAA has not yet been reported to cyclize to a sesquiterpene lactone...
May 14, 2018: ACS Chemical Biology
https://www.readbyqxmd.com/read/29756785/prediction-of-enhanced-catalytic-activity-for-hydrogen-evolution-reaction-in-janus-transitional-metal-dichalcogenides
#20
Dequan Er, Han Ye, Nathan C Frey, Hemant Kumar, Jun Lou, Vivek B Shenoy
Significant efforts have been made in improving the hydrogen evolution reaction (HER) catalytic activity in transition metal dichalcogenides (TMDs), which are promising non-precious catalysts. However, previous attempts have exploited possible solutions to activate the inert basal plane, with little improvement. Among them, the most successful modification requires a careful manipulation of vacancy concentration and strain simultaneously. To fully realize the promise of TMD catalysts for HER in an easier and more effective way, a new means in tuning the HER catalytic activity is needed...
May 14, 2018: Nano Letters
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