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https://www.readbyqxmd.com/read/27910870/antinociceptive-profile-of-levo-tetrahydropalmatine-in-acute-and-chronic-pain-mice-models-role-of-spinal-sigma-1-receptor
#1
Dong-Wook Kang, Ji-Young Moon, Jae-Gyun Choi, Suk-Yun Kang, Yeonhee Ryu, Jin Bong Park, Jang-Hern Lee, Hyun-Woo Kim
We have recently reported that repeated systemic treatments of extract from Corydalis yanhusuo alleviate neuropathic pain and levo-tetrahydropalmatine (l-THP) is one of active components from Corydalis. We designed this study to investigate antinociceptive effect of l-THP in acute and chronic pain models and related mechanism within the spinal cord. We found that intraperitoneal pretreatment with l-THP significantly inhibited the second phase of formalin-induced pain behavior. In addition, intrathecal as well as intraperitoneal pretreatment with l-THP reduced the mechanical allodynia (MA) induced by direct activation of sigma-1 receptor (Sig-1)...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910659/the-multi-spectral-line-polarization-mse-system-on-alcator-c-mod
#2
R T Mumgaard, S D Scott, M Khoury
A multi-spectral line-polarization motional Stark effect (MSE-MSLP) diagnostic has been developed for the Alcator C-Mod tokamak wherein the Stokes vector is measured in multiple wavelength bands simultaneously on the same sightline to enable better polarized background subtraction. A ten-sightline, four wavelength MSE-MSLP detector system was designed, constructed, and qualified. This system consists of a high-throughput polychromator for each sightline designed to provide large étendue and precise spectral filtering in a cost-effective manner...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27907154/pheromone-recognition-and-selectivity-by-comr-proteins-among-streptococcus-species
#3
Erin Shanker, Donald A Morrison, Antoine Talagas, Sylvie Nessler, Michael J Federle, Gerd Prehna
Natural transformation, or competence, is an ability inherent to bacteria for the uptake of extracellular DNA. This process is central to bacterial evolution and allows for the rapid acquirement of new traits, such as antibiotic resistance in pathogenic microorganisms. For the Gram-positive bacteria genus Streptococcus, genes required for competence are under the regulation of quorum sensing (QS) mediated by peptide pheromones. One such system, ComRS, consists of a peptide (ComS) that is processed (XIP), secreted, and later imported into the cytoplasm, where it binds and activates the transcription factor ComR...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27905666/spectral-electroencephalography-profile-of-rapid-eye-movement-sleep-at-sleep-onset-in-narcolepsy-type-1
#4
F Pizza, R Ferri, S Vandi, F Rundo, M Iloti, G Neccia, G Plazzi
BACKGROUND AND PURPOSE: The sleep-onset rapid eye movement (REM) period (SOREMP), the hallmark of narcolepsy, may be a specific state and not the simple anticipation of REM sleep. METHODS: We analyzed the electroencephalographic spectral content in untreated patients with narcolepsy type 1 (NT1) during the sleep-onset period (SOP) and during nocturnal REM sleep in two consecutive nocturnal recordings from 31 patients with NT1 (mean age 34 ± 15 years, 18 males) and a single nocturnal recording from 36 controls (mean age 38 ± 13 years, 21 males)...
December 1, 2016: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/27905227/a-practical-guide-to-forensic-nursing-amar-angela-f-and-sekula-l-kathleen-a-practical-guide-to-forensic-nursing-392pp-%C3%A2-38-85-sigma-theta-tau-international-kindle-edition-9781940446349-1940446341-formula-see-text
#5
(no author information available yet)
This fascinating publication describes in depth the roles and responsibilities of forensic nurses in the US, who are often involved in the scientific investigation of violent and sexual crimes. However, these duties differ from those of nurses in forensic or secure settings in the UK, who work primarily with offenders who have mental health problems and who are in hospital, prison or police cells.
December 1, 2016: Nursing Management (Harrow)
https://www.readbyqxmd.com/read/27902532/lean-six-sigma-to-reduce-intensive-care-unit-length-of-stay-and-costs-in-prolonged-mechanical-ventilation
#6
Stephen Trzeciak, Michael Mercincavage, Cory Angelini, William Cogliano, Emily Damuth, Brian W Roberts, Sergio Zanotti, Anthony J Mazzarelli
OBJECTIVE: Patients with prolonged mechanical ventilation (PMV) represent important "outliers" of hospital length of stay (LOS) and costs (∼$26 billion annually in the United States). We tested the hypothesis that a Lean Six Sigma (LSS) approach for process improvement could reduce hospital LOS and the associated costs of care for patients with PMV. DESIGN: Before-and-after cohort study. SETTING: Multidisciplinary intensive care unit (ICU) in an academic medical center...
November 29, 2016: Journal for Healthcare Quality: Official Publication of the National Association for Healthcare Quality
https://www.readbyqxmd.com/read/27900790/revealing-germylene-compounds-to-attain-superbasicity-with-sigma-donor-substituents-a-density-functional-theory-study
#7
Bishwajit Ganguly, Abul Kalam Biswas
This study reports for the first time that compounds of Ge (II) can function as superbases. Two B(N=PiPr3)2 groups attached to a germanium (II) center show a gas phase proton affinity of 296.2 kcal/mol, close to the range of a hyperbase as revealed by B3LYP-D3/6-31G(2d,p) level of theory. These DFT calculations showed better agreement of geometrical parameters for the reported stable germylene compound 1 than previously reported calculations at the B3LYP/6-31G(2d,p) and PBE/DZP level of theory. A systematic study performed with different substitutions of Ge(II) revealed that such system can achieve basicity close to a hyperbase...
November 30, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27897342/catalytic-sp3-sp3-functionalisation-of-sulfonamides-late-stage-modification-of-drug-like-molecules
#8
Joseph B Sweeney, Othman Abdulla, Adam Clayton, Robert Faulkner, Duncan Gill, Craig Rice, Scarlett Walton
A new application of Pd-catalysed allylation is reported which enables the synthesis of a range of branched sp3-functionalised sulfonamides, a compound class for which few reported methods exist. By reacting benzyl sulfonamides with allylic acetates in the presence of Pd(0) catalysts and base at room temperature, direct allylation can be efficiently carried out, yielding products which are analogues of structural motifs seen in biologically active small molecules. The reaction is carried out under mild conditions and can be applied to nanomolar sigma-receptor binders, thus enabling a late-stage functionalisation and efficient expansion of drug-like chemical space...
November 29, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27895516/a-prospective-observational-study-comparing-the-pk-pd-relationships-of-generic-meropenem-mercide-%C3%A2-to-the-innovator-brand-in-critically-ill-patients
#9
Mervyn Mer, Jacques Rene Snyman, Constance Elizabeth Jansen van Rensburg, Jacob John van Tonder, Ilze Laurens
INTRODUCTION: Clinicians' skepticism, fueled by evidence of inferiority of some multisource generic antimicrobial products, results in the underutilization of more cost-effective generics, especially in critically ill patients. The aim of this observational study was to demonstrate equivalence between the generic or comparator brand of meropenem (Mercide(®)) and the leading innovator brand (Meronem(®)) by means of an ex vivo technique whereby antimicrobial activity is used to estimate plasma concentration of the active moiety...
2016: Clinical Pharmacology: Advances and Applications
https://www.readbyqxmd.com/read/27891124/a-novel-cell-type-enables-b-subtilis-to-escape-from-unsuccessful-sporulation-in-minimal-medium
#10
Hervé Joël Defeu Soufo
Sporulation is the most enduring survival strategy developed by several bacterial species. However, spore development of the model organism Bacillus subtilis has mainly been studied by means of media or conditions optimized for the induction of sporogenesis. Here, I show that during prolonged growth during stationary phase in minimal medium, B. subtilis undergoes an asymmetric cell division that produces small and round-shaped, DNA containing cells. In contrast to wild-type cells, mutants harboring spo0A or spoIIIE/sftA double mutations neither sporulate nor produce this special cell type, providing evidence that the small round cells emerge from the abortion of endospore formation...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27886264/sigma-1-receptor-agonism-promotes-mechanical-allodynia-after-priming-the-nociceptive-system-with-capsaicin
#11
J M Entrena, C Sánchez-Fernández, F R Nieto, R González-Cano, S Yeste, E J Cobos, J M Baeyens
Sigma-1 receptor antagonists promote antinociception in several models of pain, but the effects of sigma-1 agonists on nociception (particularly when the nociceptive system is primed) are not so well characterized; therefore we evaluated the effects of sigma-1 agonists on pain under different experimental conditions. The systemic administration of the selective sigma-1 agonists (+)-pentazocine and PRE-084, as well as the nonselective sigma-1 agonist carbetapentane (used clinically as an antitussive drug), did not alter sensitivity to mechanical stimulation under baseline conditions...
November 25, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27885719/targeting-nanocarriers-with-anisamide-fact-or-artifact
#12
Athanasia Dasargyri, Carole D Kümin, Jean-Christophe Leroux
Encapsulating chemotherapeutics in nanoparticles can reduce the side effects of intravenous administration and improve their antitumor efficacy. Additionally, surface decoration of the nanocarriers with tumor-targeting ligands may enhance their specificity for cancer cells overexpressing the corresponding ligand-binding counterpart. The focus here is on anisamide, a low-molecular-weight benzamide derivative used as a tumor-directing moiety in functionalized nanosystems, based on its alleged interaction with Sigma receptors...
November 25, 2016: Advanced Materials
https://www.readbyqxmd.com/read/27879005/transient-distention-of-right-posterior-located-sigma-a-new-sonographic-sign-for-the-prenatal-diagnosis-of-anal-atresia
#13
Moshe Bronshtein, Ayala Gover, Ron Beloosesky, Zeev Blumenfeld
We describe a new sonographic sign for the detection of anal atresia in the early midtrimester on transvaginal sonography. In six cases of fetal anal atresia, the finding of a transient, distended, and right-sided sigmoid colon was observed at 13-16 weeks' gestation. Three cases have undergone pregnancy termination due to multiple anomalies. In the other three, the colonic distension resolved by 19 weeks' gestation. In two of these, the finding was isolated, and no other anomalies were detected. In all six cases, anal atresia or cloaca was confirmed on postabortal autopsy or after delivery...
November 23, 2016: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/27878231/sirt1-exerts-neuroprotective-effects-by-attenuating-cerebral-ischemia-reperfusion-induced-injury-via-targeting-p53-microrna-22
#14
Hui Lu, Bincheng Wang
The aim of this study was to investigate whether the SIRT1 exerts neuroprotective effects by attenuating cerebral ischemia/reperfusion-induced injury (CIRI) via targeting p53/microRNA-22. We found that the overexpression of sirtuin 1 (SIRT1) decreased the infarct volume, suppressed p53 protein expression and activated microRNA-22 expression following CIRI. An injection of lipopolysaccharide (LPS, 1 mg/ml; Sigma, St. Louis, MO USA) into the corpus callosum was used to induce CIRI in rats. The infarct volume and neurological deficit score were used to examine the effects of SIRT1 on CIRI...
November 18, 2016: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27872240/the-staphylococcus-aureus-airsr-two-component-system-mediates-reactive-oxygen-species-resistance-via-transcriptional-regulation-of-staphyloxanthin-production
#15
Jeffrey W Hall, Junshu Yang, Haiyong Guo, Yinduo Ji
Staphylococcus aureus is an important opportunistic pathogen and etiologically agent of many hospital- and community-acquired infections. The golden pigment, staphyloxanthin, of S. aureus colonies distinguishes it from other staphylococci and related Gram-positive cocci. Staphyloxanthin is the product of a series of biosynthetic steps that produce a unique membrane-embedded C (30) golden carotenoid and is an important antioxidant. We observed a strain with an inducible airR overexpression cassette had noticeably increased staphyloxanthin production compared to the wild-type strain under aerobic culturing conditions...
November 21, 2016: Infection and Immunity
https://www.readbyqxmd.com/read/27867786/aerosol-lidar-observations-of-atmospheric-mixing-in-los-angeles-climatology-and-implications-for-greenhouse-gas-observations
#16
John Ware, Eric A Kort, Phil DeCola, Riley Duren
Atmospheric observations of greenhouse gases provide essential information on sources and sinks of these key atmospheric constituents. To quantify fluxes from atmospheric observations, representation of transport-especially vertical mixing-is a necessity and often a source of error. We report on remotely sensed profiles of vertical aerosol distribution taken over a 2 year period in Pasadena, California. Using an automated analysis system, we estimate daytime mixing layer depth, achieving high confidence in the afternoon maximum on 51% of days with profiles from a Sigma Space Mini Micropulse LiDAR (MiniMPL) and on 36% of days with a Vaisala CL51 ceilometer...
August 27, 2016: Journal of Geophysical Research. Atmospheres: JGR
https://www.readbyqxmd.com/read/27865495/assessment-of-multifunctional-activity-of-bioactive-peptides-derived-from-fermented-milk-by-specific-lactobacillus-plantarum-strains
#17
J E Aguilar-Toalá, L Santiago-López, C M Peres, C Peres, H S Garcia, B Vallejo-Cordoba, A F González-Córdova, A Hernández-Mendoza
Milk-derived bioactive peptides with a single activity (e.g., antioxidant, immunomodulatory, or antimicrobial) have been previously well documented; however, few studies describe multifunctional bioactive peptides, which may be preferred over single-activity peptides, as they can simultaneously trigger, modulate, or inhibit multiple physiological pathways. Hence, the aim of this study was to assess the anti-inflammatory, antihemolytic, antioxidant, antimutagenic, and antimicrobial activities of crude extracts (CE) and peptide fractions (<3 and 3-10 kDa) obtained from fermented milks with specific Lactobacillus plantarum strains...
November 16, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27864172/the-ebpa-rpon-regulatory-pathway-of-the-pathogen-leptospira-interrogans-is-essential-for-survival-in-the-environment
#18
Wei-Lin Hu, Christopher J Pappas, Jun-Jie Zhang, You-Yun Yang, Jie Yan, Mathieu Picardeau, X Frank Yang
Leptospira interrogans is the agent of leptospirosis, a re-emerging zoonotic disease. Leptospirosis is transmitted to humans through environmental surface waters contaminated by the urine of mammals that are chronically infected by pathogenic strains that are able to survive in water for long periods. Little is known about the regulatory pathways underlying environmental sensing and host adaptation of L. interrogans during its enzootic cycle. This study identifies the EbpA-RpoN regulatory pathway in L. interrogans In this pathway, EbpA, a σ(54) activator and putative prokaryotic enhancer-binding protein (EBP), and the alternative sigma factor RpoN (σ(54)) control expression of at least three genes - encoding AmtB (an ammonium transport protein) and two proteins of unknown function...
November 18, 2016: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/27862689/applying-lean-six-sigma-methodology-to-reduce-cesarean-section-rate
#19
Ze-Ying Chai, Hua-Min Hu, Xiu-Ling Ren, Bao-Jin Zeng, Ling-Zhi Zheng, Feng Qi
OBJECTIVES: This study aims to reduce cesarean section rate and increase rate of vaginal delivery. METHODS: By using Lean Six Sigma (LSS) methodology, the cesarean section rate was investigated and analyzed through a 5-phase roadmap consisting of Define, Measure, Analyze, Improve, and Control. The principal causes of cesarean section were identified, improvement measures were implemented, and the rate of cesarean section before and after intervention was compared...
November 14, 2016: Journal of Evaluation in Clinical Practice
https://www.readbyqxmd.com/read/27860065/the-application-of-lean-six-sigma-methodology-to-reduce-the-risk-of-healthcare-associated-infections-in-surgery-departments
#20
Emma Montella, Maria Vincenza Di Cicco, Anna Ferraro, Piera Centobelli, Eliana Raiola, Maria Triassi, Giovanni Improta
RATIONALE: Nowadays, the monitoring and prevention of healthcare-associated infections (HAIs) is a priority for the healthcare sector. AIMS AND OBJECTIVES: In this article, we report on the application of the Lean Six Sigma (LSS) methodology to reduce the number of patients affected by sentinel bacterial infections who are at risk of HAI. METHODS: The LSS methodology was applied in the general surgery department by using a multidisciplinary team of both physicians and academics...
November 18, 2016: Journal of Evaluation in Clinical Practice
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