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https://www.readbyqxmd.com/read/29036814/curcumin-ameliorates-neuroinflammation-neurodegeneration-and-memory-deficits-in-p25-transgenic-mouse-model-that-bears-hallmarks-of-alzheimer-s-disease
#1
Jeyapriya Raja Sundaram, Charlene Priscilla Poore, Noor Hazim Bin Sulaimee, Tej Pareek, Wei Fun Cheong, Markus R Wenk, Harish C Pant, Sally A Frautschy, Chian-Ming Low, Sashi Kesavapany
Several studies have indicated that neuroinflammation is indeed associated with neurodegenerative disease pathology. However, failures of recent clinical trials of anti-inflammatory agents in neurodegenerative disorders have emphasized the need to better understand the complexity of the neuroinflammatory process in order to unravel its link with neurodegeneration. Deregulation of Cyclin-dependent kinase 5 (Cdk5) activity by production of its hyperactivator p25 is involved in the formation of tau and amyloid pathology reminiscent of Alzheimer's disease (AD)...
October 12, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29036215/reduction-of-in-utero-lead-exposures-in-south-african-populations-positive-impact-of-unleaded-petrol
#2
Halina B Röllin, Bukola Olutola, Kalavati Channa, Jon Ø Odland
BACKGROUND: Prenatal exposure to lead (Pb) has been shown to have negative and irreversible health impacts on foetal and early childhood development, affecting morbidity and mortality in adulthood. This study aimed to assess in utero Pb exposure, examine birth outcomes, and identify confounding factors in the large cohort of South African population, following the legislated removal of Pb from petrol. METHODS: Lead was measured in the maternal blood, urine and cord blood using Inductive Coupled Plasma Mass spectrometry (ICP-MS)...
2017: PloS One
https://www.readbyqxmd.com/read/29035820/real-time-monitoring-of-amyloid-fibrillation-by-electrical-impedance-spectroscopy
#3
Rafael R da Silva, Sandro V de Lima, Helinando P de Oliveira, Celso P de Melo, Isaac A M Frías, Maria D L Oliveira, César A S Andrade
Electrical impedance spectroscopy (EIS) appears a promising label-free methodology for the investigation of processes related to the aggregation of macromolecules in solution. Here, we explore the EIS technique as a convenient tool for studying the irreversible aggregation of human insulin and describing its corresponding fibrillation kinetics. The in situ measurement of the electrical response of pure insulin solutions at 60°C allows for the real-time monitoring of the protein fibrillation as a function of the incubation time...
October 7, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29035777/investigation-of-the-composition-structure-property-relationship-of-asxte100-x-films-prepared-by-plasma-deposition
#4
Leonid Mochalov, Dominik Dorosz, Aleksey Nezhdanov, Mikhail Kudryashov, Sergey Zelentsov, Dmitry Usanov, Alexandr Logunov, Aleksandr Mashin, Daniela Gogova
AsxTe100-x amorphous films of different chemical content were prepared by Plasma-Enhanced Chemical Vapor Deposition (PECVD). For the first time the optical properties of As-Te chalcogenide materials have been measured in UV-VIS-IR ranges (from 0.2 to 25μm) for a very wide range of chemical compositions (20-80at.% As). As-Te films have been tuned from 0.80 to 1.10eV. The IR results obtained have been juxtaposed with the Raman spectroscopy findings to establish the correlation between optical and structural properties of the materials developed...
October 12, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29035541/hydration-phase-diagram-of-clay-particles-from-molecular-simulations
#5
Tulio Honorio, Laurent Brochard, Matthieu Vandamme
Adsorption plays a fundamental role in the behavior of clays. Due to the confinement between clay solid layers at the nanoscale, adsorbed water is structured in layers, which can occupy a specific volume. The transition between these states is intimately related to key features of clay thermo-hydro-mechanical behavior. In this paper, we consider the hydration states of clays as phases and the transition between these states, as phase changes. The thermodynamic formulation supporting this idea is presented. Then, results from grand canonical Monte Carlo simulations of sodium-montmorillonite are used to derive hydration phase diagrams...
October 16, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29035284/traction-alopecia-a-neglected-entity-in-2017
#6
REVIEW
Christiana Oyinlola Akingbola, Jui Vyas
Traction alopecia was first described in 1904 but is still a cause of scarring hair loss in young women worldwide. It is unique in being initially a reversible then an irreversible (scarring) form of alopecia. Linked to tightly-pulled hairstyles, it is seen across all races. The pattern of hair loss depends on the style creating it but most commonly affects the frontotemporal hairline. There are some new examination findings associated with traction alopecia, which are traction folliculitis, the fringe sign and hair casts (pseudonits) on dermatoscopy...
November 2017: Indian Journal of Dermatology, Venereology and Leprology
https://www.readbyqxmd.com/read/29034947/revealing-the-electronic-character-of-the-positive-electrode-electrolyte-interface-in-lithium-ion-batteries
#7
Giorgia Zampardi, Rafael Trocoli, Wolfgang Schuhmann, Fabio La Mantia
High voltage operating active materials are among the most promising components for positive electrodes of future high energy lithium-ion batteries. However, the operating potential range of such materials often exceeds anodically the thermodynamic stability window of the electrolyte. A surface layer is therefore formed, which is supposed to be one of the reasons for the high irreversible charge loss of these electrodes. The electronic character of such a surface layer formed at the electrode/electrolyte interface of LiNi0...
October 16, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29034836/nanomedicine-for-intranasal-delivery-to-improve-brain-uptake
#8
Amit A Patel, Ravish J Patel, Shachi R Patel
Intranasal drug delivery system provide distinct advantage over conventional drug delivery system for a drug that is pharmacokenetically or biologically unstable. Major concern for treatment of central nervous system diseases are law concentration of therapeutically active molecule within brain as blood brain barrier is creating obstacle, where intranasal drug delivery provides direct transport of therapeutically active moiety into brain via olfactory or trigeminal pathway. Nasal mucosa provides distinct advantage like improved bioavailability, law dose and quick onset of action and high patient compliance, major disadvantage is residence time of drug and irreversible entrapment of drug...
October 13, 2017: Current Drug Delivery
https://www.readbyqxmd.com/read/29034602/gender-and-arch-effects-on-the-use-of-non-opioid-analgesics-for-post-endodontic-pain-reduction
#9
Wail M Elzaki, Hassan M Ziada, Neamat H Abubakr, Yahia E Ibrahim
This study aimed to evaluate the secondary outcomes of gender and arch and their impact on pain reduction following initial endodontic therapy. 185 medications, including placebo were prepared, and 170 participants completed the trial. Group 1, received a single dose of Paracetamol alone (G-1), Group 2 received combined Ibuprofen/Paracetamol (G-2). Group 3 received combined Mefenamic acid/Paracetamol (G-3), group 4 received combined Diclofenac K/Paracetamol (G-4) and Group 5 received a placebo (G-5). There were no statistically significant differences in pain reduction between males and females whilst there were statistically significant differences between them and the placebo group...
October 16, 2017: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/29034368/solar-driven-thermochemical-splitting-of-co2-and-in-situ-separation-of-co-and-o2-across-a-ceria-redox-membrane-reactor
#10
Maria Tou, Ronald Michalsky, Aldo Steinfeld
Splitting CO2 with a thermochemical redox cycle utilizes the entire solar spectrum and provides a favorable path to the synthesis of solar fuels at high rates and efficiencies. However, the temperature/pressure swing commonly applied between reduction and oxidation steps incurs irreversible energy losses and severe material stresses. Here, we experimentally demonstrate for the first time the single-step continuous splitting of CO2 into separate streams of CO and O2 under steady-state isothermal/isobaric conditions...
September 6, 2017: Joule
https://www.readbyqxmd.com/read/29033317/ras-binder-induces-a-modified-switch-ii-pocket-in-gtp-and-gdp-states
#11
Daniel R Gentile, Manoj K Rathinaswamy, Meredith L Jenkins, Steven M Moss, Braden D Siempelkamp, Adam R Renslo, John E Burke, Kevan M Shokat
Covalent inhibitors of K-Ras(G12C) have been reported that exclusively recognize the GDP state. Here, we utilize disulfide tethering of a non-natural cysteine (K-Ras(M72C)) to identify a new switch-II pocket (S-IIP) binding ligand (2C07) that engages the active GTP state. Co-crystal structures of 2C07 bound to H-Ras(M72C) reveal binding in a cryptic groove we term S-IIG. In the GppNHp state, 2C07 binding to a modified S-IIP pushes switch I away from the nucleotide, breaking the network of polar contacts essential for adopting the canonical GTP state...
September 19, 2017: Cell Chemical Biology
https://www.readbyqxmd.com/read/29033092/comparison-of-il-1%C3%AE-tnf-%C3%AE-hbd-2-and-hbd-3-expression-in-the-dental-pulp-of-smokers-versus-nonsmokers
#12
Caroline Ghattas Ayoub, Anita Aminoshariae, Mohammed Bakkar, Santosh Ghosh, Tracey Bonfield, Catherine Demko, Thomas A Montagnese, Andre K Mickel
INTRODUCTION: To date, the endodontic literature lacks research on the effect of smoking on cytokine and defensin expression in the dental pulp. Therefore, the aim of this study was to investigate the expression of interleukin (IL)-1β, tumor necrosis factor (TNF)-α, human beta defensin (hBD)-2 and hBD-3 in the dental pulp of smokers and compare them with nonsmokers. We hypothesized that cytokine and defensin expression would be reduced in smokers as compared with nonsmokers. METHODS: Thirty-two smokers and 37 nonsmokers with endodontic pulpal diagnoses of normal, symptomatic irreversible pulpitis and asymptomatic irreversible pulpitis were included in this cross-sectional study...
October 12, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29032352/physiological-impacts-of-acute-cu-exposure-on-deep-sea-vent-mussel-bathymodiolus-azoricus-under-a-deep-sea-mining-activity-scenario
#13
Inês Martins, Joana Goulart, Eva Martins, Rosa Morales-Román, Sergio Marín, Virginie Riou, Ana Colaço, Raul Bettencourt
Over the past years, several studies have been dedicated to understanding the physiological ability of the vent mussel Bathymodiolus azoricus to overcome the high metal concentrations present in their surrounding hydrothermal environment. Potential deep-sea mining activities at Azores Triple junction hydrothermal vent deposits would inevitably lead to the emergence of new fluid sources close to mussel beds, with consequent emission of high metal concentrations and potential resolubilization of Cu from minerals formed during the active phase of the vent field...
October 9, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/29032117/salvia-miltiorrhiza-protects-adenine-induced-chronic-renal-failure-by-regulating-the-metabolic-profiling-and-modulating-the-nadph-oxidase-ros-erk-and-tgf-%C3%AE-smad-signaling-pathways
#14
Hongdie Cai, Shulan Su, Yonghui Li, Huiting Zeng, Zhenhua Zhu, Jianming Guo, Yue Zhu, Sheng Guo, Li Yu, Dawei Qian, Yuping Tang, Jinao Duan
ETHNOPHARMACOLOGICAL RELEVANCE: Chronic renal failure (CRF) is defined as a progressive and irreversible loss of renal function and associated with inflammation and oxidative stress. Salvia miltiorrhiza (SM) is an important Chinese herb used in traditional Chinese medicine with notable effects on CRF. It significantly inhibited the elevation of serum creatinine (Scr), blood urea nitrogen (BUN) and urine protein (UP) in adenine-induced CRF rats, while the action mechanism need to be illuminated deeply...
October 11, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29031854/angptl-4-induces-diabetic-retinal-inflammation-by-activating-profilin-1
#15
Qianyi Lu, Peirong Lu, Wei Chen, Li Lu, Zhi Zheng
Diabetic retinopathy (DR), the most common cause of irreversible blindness in working-age adults, results in central vision loss that is caused by microvascular damage to the inner lining of the back of the eye, the retina. The aim of this work was to assess the temporal relationships between angiopoietin-like protein-4 (ANGPTL-4), a novel adipocytokine factor, and diabetic retinal inflammation and microvascular dysfunction. The downstream pathway(s) and upstream mediator(s) of ANGPTL-4 were then determined under high glucose (HG) conditions...
October 12, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/29031662/percutaneous-treatment-of-hepatocellular-carcinoma-state-of-the-art-and-innovations
#16
REVIEW
Jean-Charles Nault, Olivier Sutter, Pierre Nahon, Nathalie Ganne-Carrié, Olivier Séror
Percutaneous treatment of hepatocellular carcinoma (HCC) encompasses a vast range of techniques, including monopolar radiofrequency ablation (RFA), multibipolar RFA, microwave ablation, cryoablation and irreversible electroporation. RFA is considered to be one of the main curative treatments for HCC of less than 5 cm developing on cirrhosis, together with surgical resection and liver transplantation. However, controversies exist concerning the respective roles of ablation and liver resection for HCC of less than 3 to 5 cm on cirrhosis...
October 12, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/29030856/mitochondrial-3-hydroxy-3-methylglutaryl-coa-synthase-deficiency-unique-presenting-laboratory-values-and-a-review-of-biochemical-and-clinical-features
#17
Erin Conboy, Filippo Vairo, Matthew Schultz, Katherine Agre, Ross Ridsdale, David Deyle, Devin Oglesbee, Dimitar Gavrilov, Eric W Klee, Brendan Lanpher
We report an 8-month-old infant with decreased consciousness after a febrile episode and reduced oral intake. He was profoundly acidotic but his lactate was normal. Serum triglycerides were markedly elevated and HDL cholesterol was very low. The urine organic acid analysis during the acute episode revealed a complex pattern of relative hypoketotic dicarboxylic aciduria, suggestive of a potential fatty acid oxidation disorder. MRI showed extensive brain abnormalities concerning for a primary energy deficiency...
October 14, 2017: JIMD Reports
https://www.readbyqxmd.com/read/29030225/an-intelligent-re-shieldable-targeting-system-for-enhanced-tumor-accumulation
#18
Zhenpeng Hu, Jinlong Ma, Fei Fu, Chen Cui, Xiaomin Li, Xinyu Wang, Wei Wang, Yeda Wan, Zhi Yuan
Programmed ligand targeting strategy promotes the blood circulation stability of nanoparticles by shielding the ligand. However, the irreversible shielding causes the deshielded nanoparticles to be easily recognized and cleared by the reticuloendothelial system (RES), impeding their further retention in the tumor. Here, we for the first time prove the superiority of the intelligent re-shieldable targeting system that is based on the pH-responsive self-assembly/disassembly of gold nanoparticles. The system can enhance the stability of gold nanoparticles in the blood circulation (2...
October 10, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29030107/ammodytin-l-is-the-main-cardiotoxic-component-of-the-vipera-ammodytes-ammodytes-venom
#19
Svjetlana Karabuva, Boris Lukšić, Ivica Brizić, Zorica Latinović, Adrijana Leonardi, Igor Križaj
Venom of the nose-horned viper (V. a. ammodytes) as also venoms of some related European viperids can induce also cardiotoxic effects in mammals. In this work we demonstrated that the protein in the V. a. ammodytes venom acting on heart is a myotoxic secreted phospholipase A2 analogue ammodytin L (AtnL). In the isolated perfused rat heart AtnL induced significant and irreversible cardiotoxicity characterized by atrioventricular (AV) blockade. This venom protein induced appearance of high levels of creatine kinase, lactate dehydrogenase, aspartate aminotransferase and troponin I in the sinus effluent of the isolated heart, indicative for myocardial damage, which is obviously the primary cause of its cardiotoxic action...
October 10, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/29029985/clinical-and-pathological-outcomes-after-irreversible-electroporation-of-the-pancreas-using-two-parallel-plate-electrodes-a-porcine-model
#20
Steffi J E Rombouts, Willemijn P M van Dijck, Maarten W Nijkamp, Tyche C Derksen, Lodewijk A A Brosens, Frederik J H Hoogwater, Maarten S van Leeuwen, Inne H M Borel Rinkes, Richard van Hillegersberg, Fred H Wittkampf, Izaak Q Molenaar
BACKGROUND: Irreversible electroporation (IRE) by inserting needles around the tumor as treatment for locally advanced pancreatic cancer entails several disadvantages, such as incomplete ablation due to field inhomogeneity, technical difficulties in needle placement and a risk of pancreatic fistula development. This experimental study evaluates outcomes of IRE using paddles in a porcine model. METHODS: Six healthy pigs underwent laparotomy and were treated with 2 separate ablations (in head and tail of the pancreas)...
October 10, 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
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