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https://www.readbyqxmd.com/read/29034737/anti-allergic-inflammatory-effect-of-vanillic-acid-through-regulating-thymic-stromal-lymphopoietin-secretion-from-activated-mast-cells
#1
Hyun-Ja Jeong, Sun-Young Nam, Hee-Yun Kim, Mu Hyun Jin, Mi Hye Kim, Seok Seon Roh, Hyung-Min Kim
Vanillic acid, which is well known as a benzoic acid derivative, has been used as a flavouring agent. Currently, we ascertained the therapeutic potential action of vanillic acid on allergic inflammatory reaction in human mast cell line, HMC-1. Treatment with vanillic acid resulted in a significant decrease in levels of thymic stromal lymphopoietin and pro-inflammatory cytokines compared to phorbol 12-myristate 13-acetate and calcium ionophore A23187 (PMACI)-treated HMC-1 cells. In PMACI-stimulated cells, treatment with vanillic acid also dramatically inhibited activities of caspase-1 and nuclear factor-kB (p65)...
October 16, 2017: Natural Product Research
https://www.readbyqxmd.com/read/29034196/protective-effect-of-ethyl-acetate-fraction-of-biophytum-sensitivum-extract-against-sodium-oxalate-induced-urolithiasis-in-rats
#2
Anil T Pawar, Niraj S Vyawahare
The methanolic whole plant extract of Biophytum sensitivum (gǎnyìng cǎo) has been found to possess antiurolithiatic effect. The present study was undertaken to evaluate the antiurolithiatic effect of some fractions of methanolic whole plant extract of B. sensitivum (MBS) in rats as a step toward activity-directed isolation of antiurolithiatic component. The MBS was successively extracted with dichloromethane, ethyl acetate, ethanol and water to obtain fractions. Sodium oxalate (70 mg/kg, i.p.) was administered to rats for seven days to develop calcium oxalate urolithiasis...
October 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/28983253/a-novel-kinetic-method-to-measure-apparent-solubility-product-of-bulk-human-enamel
#3
Linda Hassanali, Ferranti S Wong, Richard J M Lynch, Paul Anderson
Introduction: Tooth enamel mineral loss is influenced by its solubility product value, which is fundamental to the understanding of de- and remineralization resulting from a carious or erosive challenge. Published pKsp values for human enamel and hydroxyapatite range from 110 to 126 suggesting a heterogeneous nature of enamel solubility. However, this range of values may also result from the variety of methods used, e.g., some authors reporting values for suspensions of enamel powder and others for bulk enamel...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28965041/niobium-treated-by-plasma-electrolytic-oxidation-with-calcium-and-phosphorus-electrolytes
#4
Bruno Leandro Pereira, Aline Rossetto da Luz, Carlos Maurício Lepienski, Irineu Mazzaro, Neide Kazue Kuromoto
Niobium plates were electrochemically treated by Plasma Electrolytic Oxidation (PEO) with electrolytes containing phosphorous and/or calcium. Three different electrolyte and experimental parameters were used forming three different surfaces. Film morphology, thickness, and chemical composition were analyzed by scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS). A profilometer and the sessile drop technique measured the average surfaces roughness (Ra) and contact angles respectively...
August 5, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28948457/an-aerobic-detoxification-photofermentation-by-rhodospirillum-rubrum-for-converting-soy-sauce-residue-into-feed-with-moderate-pretreatment
#5
Jian Zhang, Jie Yuan, Wen-Xue Zhang, Wen-You Zhu, Fang Tu, Ya Jiang, Chuan-Ze Sun
This paper reports an effective process for converting soy sauce residue into feeds by combining moderate acid hydrolysis and ammonization with Rhodospirillum rubrum fermentation. After pretreatment with dilute sulfuric or phosphoric acid (1%, w/w) at 100 °C, materials were subjected to fermentation under several gases (N2, CO2, and air) and different light intensities in a 2-L fermentor. Following sulfuric acid treatment, the true protein increased from 188 to 362 g kg(-1) and the crude fiber decreased from 226 to 66 g kg(-1) after fermentation at 0...
September 25, 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28943105/a549-cells-as-a-model-to-study-endogenous-lpa1-receptor-signaling-and-regulation
#6
Gabriel Carmona-Rosas, Marco A Alfonzo-Méndez, David A Hernández-Espinosa, M Teresa Romero-Ávila, J Adolfo García-Sáinz
Lysophosphatidic acid (LPA) modulates the function of many organs, including the lung. A549 is a lung carcinoma-derived cell line, frequently used as a model for type II pneumocytes. Here we show that these cells expressed messenger RNA coding for LPA1-3 receptors with the following order of abundance: LPA1 > LPA2 > LPA3 and that LPA was able to increase intracellular calcium, extracellular signal-regulated kinases 1/2 phosphorylation, and cell contraction. These effects were blocked by Ki16425, an antagonist selective for LPA1 and LPA3 receptors, and by the LPA1-selective antagonist, AM095...
September 21, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28933805/perioperative-administration-of-buffered-versus-non-buffered-crystalloid-intravenous-fluid-to-improve-outcomes-following-adult-surgical-procedures
#7
REVIEW
Sohail Bampoe, Peter M Odor, Ahilanandan Dushianthan, Elliott Bennett-Guerrero, Suzie Cro, Tong J Gan, Michael Pw Grocott, Michael Fm James, Michael G Mythen, Catherine Mn O'Malley, Anthony M Roche, Kathy Rowan, Edward Burdett
BACKGROUND: Perioperative fluid strategies influence clinical outcomes following major surgery. Many intravenous fluid preparations are based on simple solutions, such as normal saline, that feature an electrolyte composition that differs from that of physiological plasma. Buffered fluids have a theoretical advantage of containing a substrate that acts to maintain the body's acid-base status - typically a bicarbonate or a bicarbonate precursor such as maleate, gluconate, lactate, or acetate...
September 21, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28904431/role-of-gut-derived-uremic-toxins-on-oxidative-stress-and-inflammation-in-patients-with-chronic-kidney-disease
#8
S Gouroju, P V L N Srinivasa Rao, A R Bitla, K S Vinapamula, S M Manohar, S Vishnubhotla
Several cardiovascular disease (CVD) risk factors have been identified among patients with chronic kidney disease (CKD). Gut-derived uremic toxins (GDUT) are important modifiable contributors in this respect. There are very few Indian studies on GDUT changes in CKD. One hundred and twenty patients older than 18 years diagnosed with CKD were enrolled along with forty healthy subjects. The patients were classified into three groups of forty patients based on stage of CKD. Indoxyl sulfate (IS), para cresyl sulfate (p-CS), indole acetic acid (IAA), and phenol were estimated along with the assessment of oxidative stress (OS), inflammatory state, and bone mineral disturbance...
September 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28893345/a-validated-high-performance-thin-layer-chromatographic-method-for-the-simultaneous-determination-of-zofenopril-calcium-and-hydrochlorothiazide-in-the-presence-of-the-hydrochlorothiazide-impurities-chlorothiazide-and-salamide
#9
Mamdouh R Rezk, Ahmed S Fayed, Hoda M Marzouk, Samah S Abbas
The chromatographic analysis of either process-related impurities or degradation products is very important inthe pharmaceutical industry. In this work, a simple, selective, and sensitive HPTLC method was developed and validated for the simultaneous determination of zofenopril calcium (ZOF) and hydrochlorothiazide (HCT) in the presence of the HCT impurities: A) chlorothiazide (CT) and B) salamide, in raw materials and in pharmaceutical formulation. The separation was carried out on HPTLC silica gel 60 F254 using ethyl acetate–glacial acetic acid–triethylamine (10 + 0...
September 11, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28888989/noradrenaline-oxymetazoline-and-phorbol-myristate-acetate-induce-distinct-functional-actions-and-phosphorylation-patterns-of-%C3%AE-1a-adrenergic-receptors
#10
Rocío Alcántara-Hernández, Aurelio Hernández-Méndez, M Teresa Romero-Ávila, Marco A Alfonzo-Méndez, André S Pupo, J Adolfo García-Sáinz
In LNCaP cells that stably express α1A-adrenergic receptors, oxymetazoline increased intracellular calcium and receptor phosphorylation, however, this agonist was a weak partial agonist, as compared to noradrenaline, for calcium signaling. Interestingly, oxymetazoline-induced receptor internalization and desensitization displayed greater effects than those induced by noradrenaline. Phorbol myristate acetate induced modest receptor internalization and minimal desensitization. α1A-Adrenergic receptor interaction with β-arrestins (colocalization/coimmunoprecipitation) was induced by noradrenaline and oxymetazoline and, to a lesser extent, by phorbol myristate acetate...
September 6, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28869893/antioxidant-and-glucose-metabolizing-potential-of-edible-insect-brachytrupes-orientalis-via-modulating-nrf2-ampk-glut4-signaling-pathway
#11
Prachurjya Dutta, Tapan Dey, Anjum Dihingia, Prasenjit Manna, Jatin Kalita
Brachytrupes orientalis (Gryllidae) is a common edible insect species eaten by the different tribes of North East India. This study investigated the potentiality of Brachytrupes orientalis extracts in different solvent hydro-alcoholic (AEBO), hexane (HEBO) and ethyl acetate (EEBO) on glucose utilization and cell viability in high glucose (HG) treated myotubes. It has been observed that AEBO supplementation significantly increased the glucose utilization against HG exposure; however, treatment HEBO and EEBO have no significant effect...
September 1, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28866210/synergic-effect-of-chitosan-and-dicalcium-phosphate-on-tricalcium-silicate-based-nanocomposite-for-root-end-dental-application
#12
Fatemeh Panahi, Sayed Mahmood Rabiee, Reza Shidpour
In recent years, cement composites based on calcium silicate have been more generally considered for medical applications. Calcium silicate Cement are among the categories that are used in dental root canal treatment. The aim of this study is to make new calcium silicate cement with dicalcium phosphate and chitosan additives to preserve and strengthen desirable properties of this type of cements. In this study, composite dental cement based on calcium silicate was prepared. Then effect of adding biodegradable and biocompatible polymer such as chitosan on setting properties and its structure were studied...
November 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28814195/change-of-plasmalogen-content-of-red-blood-cells-in-myocardial-hypoxia-and-acidosis
#13
Alexander Nikolaevich Osipenko
BACKGROUND: The contribution of hypoxic conditions to the chemical composition of membranes is not completely established. Plasmalogens, containing an alkenyl group with aldehydogenic ether linkage, are significant components of membrane lipids and their level can change in oxygen deficiency. METHODS: Analysis of plasmalogens in red blood cells was performed in patients (n = 17) with coronary heart disease, stable angina (functional class II-III) and coronary atherosclerosis...
August 17, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28800464/accelerated-biomineralization-of-graphene-oxide-incorporated-cellulose-acetate-nanofibrous-scaffolds-for-mesenchymal-stem-cell-osteogenesis
#14
Xiaoyun Liu, He Shen, Saijie Song, Wei Chen, Zhijun Zhang
For bone tissue engineering, it requires that the scaffolds have excellent biocompatibility, proper mechanical and osteoinductive properties. Electrospun nanofibers with extracellular matrices mimicking structure have proven to be good scaffolds for bone tissue repairing. Hybrid nanofibers in particular, endow the nanofibers with specific and multiple functionalities, and therefore have attracted increasing interests in the recent years. In this study, we fabricated graphene oxide (GO)-incorporated cellulose acetate (CA) nanofibrous scaffolds by electrospinning technique for enhancement of biomineralization and osteogenic differentiation of human mesenchymal stem cells (hMSCs)...
July 29, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28795389/anti-nociceptive-effect-of-patchouli-alcohol-involving-attenuation-of-cyclooxygenase-2-and-modulation-of-mu-opioid-receptor
#15
Xuan Yu, Xin-Pei Wang, Xiao-Jin Yan, Jing-Fei Jiang, Fan Lei, Dong-Ming Xing, Yue-Ying Guo, Li-Jun Du
OBJECTIVE: To explore the anti-nociceptive effect of patchouli alcohol (PA), the essential oil isolated from Pogostemon cablin (Blanco) Bent, and determine the mechanism in molecular levels. METHODS: The acetic acid-induced writhing test and formalin-induced plantar injection test in mice were employed to confifirm the effect in vivo. Intracellular calcium ion was imaged to verify PA on mu-opioid receptor (MOR). Cyclooxygenase 2 (COX2) and MOR of mouse brain were expressed for determination of PA's target...
August 9, 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28773998/optimizing-a-test-method-to-evaluate-resistance-of-pervious-concrete-to-cycles-of-freezing-and-thawing-in-the-presence-of-different-deicing-salts
#16
Chehong Tsang, Medhat H Shehata, Abdurrahmaan Lotfy
The lack of a standard test method for evaluating the resistance of pervious concrete to cycles of freezing and thawing in the presence of deicing salts is the motive behind this study. Different sample size and geometry, cycle duration, and level of submersion in brine solutions were investigated to achieve an optimized test method. The optimized test method was able to produce different levels of damage when different types of deicing salts were used. The optimized duration of one cycle was found to be 24 h with twelve hours of freezing at -18 °C and twelve hours of thawing at +21 °C, with the bottom 10 mm of the sample submerged in the brine solution...
October 28, 2016: Materials
https://www.readbyqxmd.com/read/28772874/macroporous-calcium-phosphate-chitosan-composites-prepared-via-unidirectional-ice-segregation-and-subsequent-freeze-drying
#17
Inmaculada Aranaz, Enrique Martínez-Campos, Carolina Moreno-Vicente, Ana Civantos, Sara García-Arguelles, Francisco Del Monte
Calcium phosphate chitosan-based composites have gained much interest in recent years for biomedical purposes. In this paper, three-dimensional calcium phosphate chitosan-based composites with different mineral contents were produced using a green method called ice segregation induced self-assembly (ISISA). In this methodology, ice crystals were used as a template to produce porous structures from an aqueous solution of chitosan (CS) and hydroxyapatite (Hap) also containing acetic acid (pH = 4.5). For better characterization of the nature of the inorganic matter entrapped within the resulting composite, we performed either oxygen plasma or calcination processes to remove the organic matter...
May 8, 2017: Materials
https://www.readbyqxmd.com/read/28764283/fabrication-and-appraisal-of-poly-lactic-co-glycolic-acid-moxifloxacin-nanoparticles-using-vitamin-e-tpgs-a-potential-intracanal-drug-delivery-agent
#18
Hardik Makkar, Gaurav Patri
INTRODUCTION: Nanotechnology is gaining momentum in the search for ideal biomaterials by dental researchers. The expansible nature of Endodontology deems exploration, learning and scrutinizing newer avenues which have the potential to be applied and investigated. The popularity of polymers as drug delivery vehicles has opened avenues for their application in the root canal system. This study utilized application of biodegradable polymers as potential drug delivery vehicles against Enterococcus faecalis, one of the main reasons for post treatment disease...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28752990/quartz-crystal-microbalance-assay-of-clinical-calcinosis-samples-and-their-synthetic-models-differentiates-the-efficacy-of-chelation-based-treatments
#19
Fan Fei, Andrzej Gallas, Yun-Chuan Chang, Yikun Rao, Alan Christy Hunter, Richard E P Winpenny, Ariane L Herrick, Nicholas P Lockyer, Christopher F Blanford
This paper sets out in vitro protocols for studying the relative effectiveness of chelators used in the dissolution-based treatment of hard calcinosis. Pulverized hard calcinosis samples from human donors or synthetic hydroxyapatite nanoparticles were deposited by electrophoretic deposition on the surface of a quartz crystal microbalance sensor. Over 150 deposits of <20 μg were dissolved over the course of 1 h by aliquots of buffered, aqueous solutions of two calcium chelators, EDTA and citrate, with the surface-limited dissolution kinetics monitored with <1 s time resolution...
August 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28752576/influence-of-prostanoids-in-the-diuretic-and-natriuretic-effects-of-extracts-and-kaempferitrin-from-bauhinia-forficata-link-leaves-in-rats
#20
Priscila de Souza, Luisa Mota da Silva, Thaise Boeing, Lincon Bordignon Somensi, Camile Cecconi Cechinel-Zanchett, Adriana Campos, Clarissa de Medeiros Amorim Krueger, Jairo Kenupp Bastos, Valdir Cechinel-Filho, Sérgio Faloni de Andrade
Although Bauhinia forficata Link is popularly used in Brazil to induce diuresis, no scientific investigation has focused on demonstrating its efficacy in preclinical trials. For that, normotensive male Wistar and spontaneously hypertensive rats were used to test the effect of extracts and kaempferitrin obtained from Bauhinia forficata leaves in the experimental model of diuresis. Cumulative urine volume, Na(+) and K(+) excretion, calcium, creatinine, prostaglandin E2 , pH, density, and conductivity were measured at the end of the experiment (after 8 or 24 h)...
July 28, 2017: Phytotherapy Research: PTR
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