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https://www.readbyqxmd.com/read/28823130/use-of-alternative-curing-salts-for-processing-salamis
#1
Dong-Gyun Yim, Ku-Young Chung, Cheorun Jo, Ki-Chang Nam
Objective: This study was performed to determine effects of different curing salts on the quality of salamis and to assess feasibility of using NaCl-alternative salts. Methods: Various types of curing salts (KCl or MgCl2) as well as NaCl (sun-dried or refined) were incorporated for processing of salamis. The proximate composition, fatty acids, nucleotide-related compounds, and free amino acids of the salamis were analyzed during 40 days of ripening. Results: The substitution of NaCl by KCl caused higher fat and ash content, but lower moisture content of the salami after 20 days of ripening (p<0...
August 16, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28823025/nanomedicine-associated-with-photodynamic-therapy-for-glioblastoma-treatment
#2
REVIEW
Leonardo B de Paula, Fernando L Primo, Antonio C Tedesco
Glioblastoma, also known as glioblastoma multiforme (GBM), is the most recurrent and malignant astrocytic glioma found in adults. Biologically, GBMs are highly aggressive tumors that often show diffuse infiltration of the brain parenchyma, making complete surgical resection difficult. GBM is not curable with surgery alone because tumor cells typically invade the surrounding brain, rendering complete resection unsafe. Consequently, present-day therapy for malignant glioma remains a great challenge. The location of the invasive tumor cells presents several barriers to therapeutic delivery...
August 19, 2017: Biophysical Reviews
https://www.readbyqxmd.com/read/28822940/effects-of-airborne-ammonium-and-nitrate-pollution-strongly-differ-in-peat-bogs-but-symbiotic-nitrogen-fixation-remains-unaffected
#3
Eva van den Elzen, Leon J L van den Berg, Bas van der Weijden, Christian Fritz, Lucy J Sheppard, Leon P M Lamers
Pristine bogs, peatlands in which vegetation is exclusively fed by rainwater (ombrotrophic), typically have a low atmospheric deposition of reactive nitrogen (N) (<0.5kgha(-1)y(-1)). An important additional N source is N2 fixation by symbiotic microorganisms (diazotrophs) in peat and mosses. Although the effects of increased total airborne N by anthropogenic emissions on bog vegetation are well documented, the important question remains how different N forms (ammonium, NH4(+), versus nitrate, NO3(-)) affect N cycling, as their relative contribution to the total load strongly varies among regions globally...
August 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28822931/adherence-of-microplastics-to-soft-tissue-of-mussels-a-novel-way-to-uptake-microplastics-beyond-ingestion
#4
Prabhu Kolandhasamy, Lei Su, Jiana Li, Xiaoyun Qu, Khalida Jabeen, Huahong Shi
Microplastic pollution is recognized as an emerging threat to aquatic ecosystems. One of the main environmental risks associated with microplastics is their bioavailability to marine organisms. Up to date, ingestion has been widely accepted as the sole way for the animals to uptake microplastics. Nevertheless, microplastics have also been found in some organs which are not involved in the process of ingestion. We hypothesize that the animal might uptake microplastics through adherence in addition to ingestion...
August 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28822889/metformin-targets-gastric-cancer-stem-cells
#5
Sarah Courtois, Raúl V Durán, Julie Giraud, Elodie Sifré, Julien Izotte, Francis Mégraud, Philippe Lehours, Christine Varon, Emilie Bessède
Gastric cancer is the third leading cause of cancer-related deaths worldwide and has still a poor prognosis. Therefore, new therapeutic strategies are needed: among them, targeting cancer stem cells (CSCs) could offer new opportunities. The aim of our study was to evaluate the anti-tumoural effect of metformin on gastric cancer in vitro and in vivo and especially, to determine whether this molecule could target the gastric CSCs. Metformin effects were evaluated on the proliferation and tumourigenic properties of the gastric CSCs from patient-derived primary tumour xenografts (PDXs) and cancer cell lines (MKN45, AGS and MKN74) in vitro in conventional 2 dimensional (2D) and in 3 dimensional (3D) culture systems, in which only CSCs are able to form tumourspheres and in mouse xenograft models in vivo...
August 17, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28822875/a-consortium-driven-framework-to-guide-the-implementation-of-ich-m7-option-4-control-strategies
#6
Chris Barber, Vincent Antonucci, Jens-Christoph Baumann, Roland Brown, Elizabeth Covey-Crump, David Elder, Eric Elliott, Jared W Fennell, Fabrice Gallou, Nathan D Ide, Guido Jordine, Jeffrey M Kallemeyn, Dirk Lauwers, Adam R Looker, Lucie E Lovelle, Mark McLaughlin, Robert Molzahn, Martin Ott, Didier Schils, Rolf Schulte Oestrich, Neil Stevenson, Pere Talavera, Andrew Teasdale, Michael W Urquhart, David L Varie, Dennie Welch
The ICH M7 Option 4 control of (potentially) mutagenic impurities is based on the use of scientific principles in lieu of routine analytical testing. This approach can reduce the burden of analytical testing without compromising patient safety, provided a scientifically rigorous approach is taken which is backed up by sufficient theoretical and/or analytical data. This paper introduces a consortium-led initiative and offers a proposal on the supporting evidence that could be presented in regulatory submissions...
August 16, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28822839/decreased-surface-expression-of-the-%C3%AE-subunit-of-the-gabaa-receptor-contributes-to-reduced-tonic-inhibition-in-dentate-granule-cells-in-a-mouse-model-of-fragile-x-syndrome
#7
Nianhui Zhang, Zechun Peng, Xiaoping Tong, A Kerstin Lindemeyer, Yliana Cetina, Christine S Huang, Richard W Olsen, Thomas S Otis, Carolyn R Houser
While numerous changes in the GABA system have been identified in models of Fragile X Syndrome (FXS), alterations in subunits of the GABAA receptors (GABAARs) that mediate tonic inhibition are particularly intriguing. Considering the key role of tonic inhibition in controlling neuronal excitability, reduced tonic inhibition could contribute to FXS-associated disorders such as hyperactivity, hypersensitivity, and increased seizure susceptibility. The current study has focused on the expression and function of the δ subunit of the GABAAR, a major subunit involved in tonic inhibition, in granule cells of the dentate gyrus in the Fmr1 knockout (KO) mouse model of FXS...
August 16, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28822809/inhibition-of-soluble-epoxide-hydrolase-lowers-portal-hypertension-in-cirrhotic-rats-by-ameliorating-endothelial-dysfunction-and-liver-fibrosis
#8
Wensheng Deng, Yiming Zhu, Jiayun Lin, Lei Zheng, Chihao Zhang, Meng Luo
Epoxyeicostrienoic acids (EETs) are arachidonic acid derived meditators which are catalyzed by soluble epoxide hydrolase (sEH) to less active dihydroeicostrienoics acids (DHETS). The aim of our study is to investigate the effects of sEH inhibition on hepatic and systemic hemodynamics, hepatic endothelial dysfunction, and hepatic fibrosis in CCl4 cirrhotic rats. The sEH inhibitor,trans-4-{4-[3-(4-trifluoromethoxyphenyl)-ureido]cyclohexyloxy}benzoic acid (t-TUCB) was administered to stabilize hepatic EETs by gavage at a dose of 1mg/kg/d...
August 16, 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28822736/-rhinovirus-underestimated-pathogens-in-patients-during-the-neonatal-period
#9
S Zacharie, A Vabret, B Guillois, C Dupont, J Brouard
INTRODUCTION: In recent years, developments in virological tools have led to the easy detection of rhinoviruses and enteroviruses (E/RV). Their detection is very frequent in cases of airway involvement in children and their demonstrated causality. But the morbidity of E/RV in the neonatal period is unknown due to lack of epidemiological data. The objective of this study was to evaluate the incidence and clinical characteristics of these infections in hospitalized neonates. MATERIALS AND METHODS: We retrospectively analyzed the virology specimens of all neonates hospitalized at the Caen University Hospital between 2006 and 2011...
August 16, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28822719/thalidomide-is-associated-with-increased-t-cell-activation-and-inflammation-in-antiretroviral-naive-hiv-infected-individuals-in-a-randomised-clinical-trial-of-efficacy-and-safety
#10
Tânia R C Vergara, Sadia Samer, Joanna R Santos-Oliveira, Leila B Giron, Muhammad Shoaib Arif, Maria Luciana Silva-Freitas, Lia A Cherman, Mauro S Treitsman, Alberto Chebabo, Maria Cecilia A Sucupira, Alda M Da-Cruz, Ricardo Sobhie Diaz
TRIAL DESIGN: Open-label, randomised, controlled, pilot proof-of-concept clinical trial. METHODS: Participants: Antiretroviral naïve adult males with CD4 count ≥350cells/mm(3). INTERVENTIONS: Patients were randomised to receive thalidomide 200mg QD for 3weeks (Thalidomide group) or not (Control group) and followed for 48weeks. OBJECTIVE: We hypothesized that short-term Thalidomide use would reduce HIV related inflammation and HIV replication among antiretroviral naïve HIV infected individuals...
August 12, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28822609/transient-vocal-cord-paralysis-following-central-venous-hemodialysis-catheter-insertion
#11
Gül Pamukçu Günaydın, Selahattin Gürü, Elif Aslan Taş, Fatih Tanrıverdi, Gülhan Kurtoğlu Çelik
In this article, we present a case of recurrent laryngeal nerve palsy not caused by nerve injury but due to local anesthetic infiltration that was applied prior to central venous catheterization. A 47-year-old female patient was admitted to emergency room with fatigue and nausea and was diagnosed with acute renal failure. Right jugular venous catheterization was performed for emergency hemodialysis with Seldinger technique using middle approach. Within minutes and immediately after the procedure the patient complained of hoarseness and shortness of breath, and she had stridor in her physical exam...
August 15, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28822578/improving-rhinology-skills-with-simulation
#12
REVIEW
Andrew Y Lee, Marvin P Fried, Marc Gibber
The convergence of technology and medicine has led to many advances in surgical training. Novel surgical simulators have led to significantly improved skills of graduating surgeons, leading to decreased time to proficiency, improved efficiency, decreased errors, and improvement in patient safety. Endoscopic sinus surgery poses a steep learning curve given the complex 3-dimensional anatomy of the nasal and paranasal cavities, and the necessary visual-spatial motor skills and bimanual dexterity. This article focuses on surgical simulation in rhinological training and how innovative high-fidelity and low-fidelity simulators can maximize resident training and improve procedural skills before operating in the live environment...
August 16, 2017: Otolaryngologic Clinics of North America
https://www.readbyqxmd.com/read/28822553/vitamin-d-status-in-growing-dairy-goats-and-sheep-influence-of-ultraviolet-b-radiation-on-bone-metabolism-and-calcium-homeostasis
#13
M V Nemeth, M R Wilkens, A Liesegang
The aim of this study was to investigate how controlled UVB irradiation in combination with reduced nutritional vitamin D (vitD) supply affects vitD status and Ca metabolism of growing goats and sheep. The hypothesis was that, like dairy cows, goats and sheep are able to compensate for the missing nutritional supply of vitD through endogenous production in the skin, with the consequence of a high vitD status and a balanced Ca homeostasis. Sixteen lambs and 14 goat kids aged 3 and a half months were housed in an UVB free environment and fed hay and a vitD-free concentrate over a period of 13 wk...
August 16, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28822539/polymers-and-surfactants-at-fluid-interfaces-studied-with-specular-neutron-reflectometry
#14
REVIEW
Larissa Braun, Martin Uhlig, Regine von Klitzing, Richard A Campbell
This review addresses the advances made with specular neutron reflectometry in studies of aqueous mixtures of polymers and surfactants at fluid interfaces during the last decade (or so). The increase in neutron flux due to improvements in instrumentation has led to routine measurements at the air/water interface that are faster and involve samples with lower isotopic contrast than in previous experiments. One can now resolve the surface excess of a single deuterated component on the second time scale and the composition of a mixture on the minute time scale, and information about adsorption processes and dynamic rheology can also be accessed...
July 12, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28822337/photocatalysis-of-estrone-in-water-and-wastewater-comparison-between-au-tio2-nanocomposite-and-tio2-and-degradation-by-products
#15
Kireesan Sornalingam, Andrew McDonagh, John L Zhou, Md Abu Hasan Johir, Mohammad Boshir Ahmed
Gold-modified TiO2 (Au-TiO2) photocatalysts were utilised for the degradation of estrone (E1), a major endocrine disrupting chemical in water and wastewater. Au-TiO2 catalysts were synthesised by a deposition-precipitation method with gold loadings of 0-8% (wt%). The Au-TiO2 nanocomposite exhibited superior activity compared to P25 TiO2 under UVA (λ=365nm), cool white (λ>420nm) and green (λ=523nm) light emitting diodes (LEDs), for treating 1mgl(-1) of E1. The 4wt% Au loading was found to produce the best photocatalytic activity with a rate constant of 2...
August 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28822325/are-there-regional-tendencies-toward-controversial-screening-practices-a-study-of-prostate-and-breast-cancer-screening-in-a-medicare-population
#16
Eric Raffin, Tracy Onega, Julie Bynum, Andrea Austin, Donald Carmichael, Kristen Bronner, Philip Goodney, Elias S Hyams
INTRODUCTION: Prostate and breast cancer screening in older patients continue to be controversial. Balancing the desire for early detection with avoidance of over-diagnosis has led to competing and contradictory guidelines for both practices. Despite similarities, it is not known how these screening practices are related at the regional level. In this study, we examined how screening PSA and mammography are related within healthcare regions, and, to better understand what may be driving these practices, whether they are associated with local intensity of care...
August 16, 2017: Cancer Epidemiology
https://www.readbyqxmd.com/read/28822284/the-comparison-of-chemical-liquid-deposition-and-acid-dealumination-modified-zsm-5-for-catalytic-pyrolysis-of-pinewood-using-pyrolysis-gas-chromatography-mass-spectrometry
#17
Huiyan Zhang, Shanshan Shao, Mengmeng Luo, Rui Xiao
Catalyst deactivation is the main reason for low petrochemical yield in catalytic fast pyrolysis (CFP) of biomass. ZSM-5 catalysts modified by chemical liquid deposition (CLD) and acid dealumination (AD) were prepared to improve petrochemical yields for CFP of pinewood. The results showed that CLD by SiO2 led to the coverage of strong acid sites, while AD favored the removal of superficial acid sites. CFP of pinewood showed that the relative area ratio of BTX was boosted by 37.2% and 30.4% over modified ZSM-5 catalysts by CLD and AD, respectively...
August 9, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28822280/promiscuity-impersonation-and-accommodation-evolution-of-plant-specialized-metabolism
#18
REVIEW
Bryan J Leong, Robert L Last
Specialized metabolic enzymes and metabolite diversity evolve through a variety of mechanisms including promiscuity, changes in substrate specificity, modifications of gene expression and gene duplication. For example, gene duplication and substrate binding site changes led to the evolution of the glucosinolate biosynthetic enzyme, AtIPMDH1, from a Leu biosynthetic enzyme. BAHD acyltransferases illustrate how enzymatic promiscuity leads to metabolite diversity. The examples 4-coumarate:CoA ligase and aromatic acid methyltransferases illustrate how promiscuity can potentiate the evolution of these specialized metabolic enzymes...
August 16, 2017: Current Opinion in Structural Biology
https://www.readbyqxmd.com/read/28822233/obese-fathers-lead-to-an-altered-metabolism-and-obesity-in-their-children-in-adulthood-review-of-experimental-and-human-studies
#19
REVIEW
Fernanda Ornellas, Priscila V Carapeto, Carlos A Mandarim-de-Lacerda, Marcia B Aguila
OBJECTIVE: To discuss the recent literature on paternal obesity, focusing on the possible mechanisms of transmission of the phenotypes from the father to the children. SOURCES: A non-systematic review in the PubMed database found few publications in which paternal obesity was implicated in the adverse transmission of characteristics to offspring. Specific articles on epigenetics were also evaluated. As the subject is recent and still controversial, all articles were considered regardless of year of publication...
August 16, 2017: Jornal de Pediatria
https://www.readbyqxmd.com/read/28822105/peer-led-small-groups-are-we-on-the-right-track
#20
Fraser Moore
INTRODUCTION: Peer tutor-led small group sessions are a valuable learning strategy but students may lack confidence in the absence of a content expert. This study examined whether faculty reinforcement of peer tutor-led small group content was beneficial. METHODS: Two peer tutor-led small group sessions were compared with one faculty-led small group session using questionnaires sent to student participants and interviews with the peer tutors. One peer tutor-led session was followed by a lecture with revision of the small group content; after the second, students submitted a group report which was corrected and returned to them with comments...
August 18, 2017: Perspectives on Medical Education
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