keyword
MENU ▼
Read by QxMD icon Read
search

Active release technique

keyword
https://www.readbyqxmd.com/read/28646166/atp-release-during-cell-swelling-activates-a-ca-2-dependent-cl-current-by-autocrine-mechanism-in-mouse-hippocampal-microglia
#1
E Murana, F Pagani, B Basilico, M Sundukova, L Batti, S Di Angelantonio, B Cortese, A Grimaldi, A Francioso, P Heppenstall, P Bregestovski, C Limatola, D Ragozzino
Microglia cells, resident immune cells of the brain, survey brain parenchyma by dynamically extending and retracting their processes. Cl(-) channels, activated in the cellular response to stretch/swelling, take part in several functions deeply connected with microglia physiology, including cell shape changes, proliferation, differentiation and migration. However, the molecular identity and functional properties of these Cl(-) channels are largely unknown. We investigated the properties of swelling-activated currents in microglial from acute hippocampal slices of Cx3cr1 (+/GFP) mice by whole-cell patch-clamp and imaging techniques...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28645780/salvia-miltiorrhiza-bunge-danshen-extract-attenuates-permanent-cerebral-ischemia-through-inhibiting-platelet-activation-in-rats
#2
Yu-Xiang Fei, Si-Qi Wang, Li-Jian Yang, Yan-Ying Qiu, Yi-Ze Li, Wen-Yuan Liu, Tao Xi, Wei-Rong Fang, Yun-Man Li
ETHNOPHARMACOLOGICAL RELEVANCE: Danshen is a crude herbal drug isolated from dried roots of Salvia miltiorrhiza Bunge. This plant is widely used in oriental medicine for the treatment of cardiovascular and cerebrovascular diseases. The supercritical CO2 extract from Danshen (SCED) (57.85%, 5.67% and 4.55% for tanshinone IIA, tanshinone I and cryptotanshinone respectively) was studied in this article, whose potential molecular mechanism remains unclear, especially in anti-thrombosis. AIM OF THE STUDY: The present study was designed to observe the protective effect of SCED on ischemic stroke in rats and to explore the underlying anti-thrombosis mechanism...
June 20, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28640580/a-bio-inspired-alginate-gum-arabic-hydrogel-with-micro-nano-scale-structures-for-controlled-drug-release-in-chronic-wound-healing
#3
Mi Li, Haichang Li, Xiangguang Li, Hua Zhu, Zihui Xu, Lianqing Liu, Jianjie Ma, Mingjun Zhang
Bio-polymeric hydrogels have drawn increasingly research interests in biomaterials due to its tunable physical and chemical properties for both creating bioactive cellular micro-environment and serving as sustainable therapeutic reagents. Inspired by a naturally occurring hydrogel secreted from the carnivorous Sundew plant for trapping insects, here we have developed a bio-inspired hydrogel to deliver mitsugumin53 (MG53), an important protein in cell membrane repair, for chronic wound healing. Both chemical compositions and micro/nano morphological properties inherent from the natural Sundew hydrogel were mimicked using sodium alginate and gum arabic with calcium ion-mediated cross-linking...
June 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28635414/core-shell-pla-pva-porous-microparticles-as-carriers-for-bacteriocin-nisin
#4
Pavlina Holcapkova, Martina Hrabalikova, Petra Stoplova, Vladimir Sedlarik
This work is focused on preparation of novel porous type of core-shell-structured microparticles based on polylactide (shell) and poly(vinyl alcohol) cross-linked with glutaric acid (GA) (core) prepared by water-in-oil-in-water solvent evaporation technique. The microparticle systems were used as delivery systems for immobilisation of model antibacterial agent - nisin. The effect of cross-linking and the initial amount of nisin on their morphology was investigated using scanning electron microscopy, BET analysis, zeta potential measurement and Fourier transform infra-red spectroscopy...
June 21, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28633833/recent-advances-in-ultrasonic-treatment-challenges-and-field-applications-for-controlling-harmful-algal-blooms-habs
#5
REVIEW
Jungsu Park, Jared Church, Younggyu Son, Keug-Tae Kim, Woo Hyoung Lee
Algal blooms are a naturally occurring phenomenon which can occur in both freshwater and saltwater. However, due to excess nutrient loading in water bodies (e.g. agricultural runoff and industrial activities), harmful algal blooms (HABs) have become an increasing issue globally, and can even cause health effects in humans due to the release of cyanotoxins. Among currently available treatment methods, sonication has received increasing attention for algal control because of its low impact on ecosystems and the environment...
September 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28624659/surface-engineering-of-solid-lipid-nanoparticle-assemblies-by-methyl-%C3%AE-d-mannopyranoside-for-the-active-targeting-to-macrophages-in-anti-tuberculosis-inhalation-therapy
#6
Eleonora Maretti, Luca Costantino, Cecilia Rustichelli, Eliana Leo, Maria Antonietta Croce, Francesca Buttini, Eleonora Truzzi, Valentina Iannuccelli
This study describes the development of new mannosylated Solid Lipid Nanoparticle assemblies (SLNas) delivering rifampicin for an inhaled treatment of tuberculosis. SLNas were surface engineered with mannose residues to recognize mannose receptors located on infected alveolar macrophages and facilitate cell internalization. Two sets of SLNas were produced by the melt emulsifying technique using biocompatible lipid components, i.e. cholesteryl myristate combined with palmitic acid (PA set) or tripalmitin (TP set), in the presence of the targeting moiety, methyl α-d-mannopyranoside...
June 15, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28624369/controlled-drug-release-through-regulated-biodegradation-of-poly-lactic-acid-using-inorganic-salts
#7
Sunil Kumar, Shikha Singh, Sudipta Senapati, Akhand Pratap Singh, Biswajit Ray, Pralay Maiti
Biodegradation rate of poly(lactic acid) (PLA) has been regulated, both increase and decrease with respect to the biodegradation of pure PLA, by embedding meager amount of inorganic salts in polymer matrix. Biodegradation is performed in enzyme medium on suspension and film and the extent of biodegradation is measured through spectroscopic technique which is also verified by weight loss measurement. Media pH has been controlled using trace amount of inorganic salt which eventually control the biodegradation of PLA...
June 15, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28619455/in-vitro-release-profiles-of-plga-core-shell-composite-particles-loaded-with-theophylline-and-budesonide
#8
Hsi-Wei Yeh, Da-Ren Chen
We investigated the effects of drug loading location, matrix material and shell thickness on the in vitro release of combinational drugs from core-shell PLGA (i.e., poly(lactic-co-glycolic acid)) particles. Budesonide and Theophylline were selected as highly hydrophobic and hydrophilic model drugs, respectively. The dual-capillary electrospray (ES) technique, operated at the cone-jet mode, was used to produce samples of drug-loaded core-shell composite particles with selected overall sizes, polymer materials, and shell thicknesses...
June 13, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28613151/stylet-penetration-activities-of-the-whitefly-bemisia-tabaci-associated-with-inoculation-of-the-crinivirus-tomato-chlorosis-virus
#9
Nathalie Kristine Prado Maluta, Elisa Garzo, Aranzazu Moreno, Jesús Navas-Castillo, Elvira Fiallo-Olivé, João Roberto Spotti Lopes, Alberto Fereres
Bemisiatabaci is an important vector of numerous plant viruses, including the emergent semi-persistently transmitted crinivirus Tomato chlorosis virus (ToCV). Its vector feeding behaviour is complex, with important implications for virus transmission, epidemiology and control. Thus, the objective of this study was to investigate the role of the stylet penetration activities of B. tabaci in the inoculation of ToCV in tomatoes by using the electrical penetration graph (EPG) technique. EPG recordings were classified into six categories depending on the waveforms observed...
June 14, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28612155/the-role-of-spatial-organization-of-ca-2-release-sites-in-the-generation-of-arrhythmogenic-diastolic-ca-2-release-in-myocytes-from-failing-hearts
#10
Andriy E Belevych, Hsiang-Ting Ho, Ingrid M Bonilla, Radmila Terentyeva, Karsten E Schober, Dmitry Terentyev, Cynthia A Carnes, Sándor Györke
In heart failure (HF), dysregulated cardiac ryanodine receptors (RyR2) contribute to the generation of diastolic Ca(2+) waves (DCWs), thereby predisposing adrenergically stressed failing hearts to life-threatening arrhythmias. However, the specific cellular, subcellular, and molecular defects that account for cardiac arrhythmia in HF remain to be elucidated. Patch-clamp techniques and confocal Ca(2+) imaging were applied to study spatially defined Ca(2+) handling in ventricular myocytes isolated from normal (control) and failing canine hearts...
July 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28611662/an-antifungal-mechanism-of-protolichesterinic-acid-from-the-lichen-usnea-albopunctata-lies-in-the-accumulation-of-intracellular-ros-and-mitochondria-mediated-cell-death-due-to-apoptosis-in-candida-tropicalis
#11
S N Kumar, C Mohandas
Candida species causes superficial and life-threatening systemic infections and are difficult to treat due to the resistance of these organism to various clinically used drugs. Protolichesterinic acid is a well-known lichen compound. Although the antibacterial activity of protolichesterinic acid has been reported earlier, the antifungal property and its mechanism of action are still largely unidentified. The goal of the present investigation is to explore the anticandidal activity and mechanism of action of protolichesterinic acid, especially against Candida tropicalis...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28611439/raman-micro-spectroscopy-as-a-viable-tool-to-monitor-and-estimate-the-ionic-transport-in-epithelial-cells
#12
Leonardo Puppulin, Giuseppe Pezzotti, Hongxin Sun, Shigekuni Hosogi, Takashi Nakahari, Toshio Inui, Yasuaki Kumamoto, Hideo Tanaka, Yoshinori Marunaka
The typical response to the lowering of plasma Na(+) concentration and blood pressure in our body involves the release of aldosterone from the adrenal glands, which triggers the reabsorption of sodium in the kidney. Although the effects of aldosterone on this physiological mechanism were extensively studied in the past decades, there are still some aspects to be fully elucidated. In the present study, we propose for the first time a new approach based on Raman spectroscopy to monitor the ionic activity in aldosterone-treated A6 renal epithelial cells...
June 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28608223/amylase-zymography
#13
Adarelys Andrades, Lellys M Contreras
Amylase zymography was carried out for the detection of amylases produced by a Geobacillus stearothermophilus strain isolated from the Thermal Center "Las Trincheras" in Venezuela. Zymography is an electrophoretic technique used to study hydrolases by means of thin gels containing copolymerized-specific substrates, under nonreducing conditions. In this study, 0.1% starch was incorporated into the gel as substrate. The formation of clear zones against a dark background in the gel stained with iodine indicated the presence of amylolytic activity...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28602990/enhancement-in-in-vitro-anti-angiogenesis-activity-and-cytotoxicity-in-lung-cancer-cell-by-pectin-pvp-based-curcumin-particulates
#14
Dinanath Gaikwad
The aim of this work was to prepare pectin-poly (vinyl pyrrolidone) [PVP] based curcumin particulates to enhance the anticancer potential of curcumin, solubility and allow its localized controlled release. Pectin-PVP based curcumin particulates (PECTIN-PVP CUR) were prepared by spray drying technique in different ratios and were evaluated for surface morphology, micromeritics, flowability, particle size, drug content, in vitro dissolution, inhalable fraction, anti-angiogenesis/angiolysis and cytotoxicity. Results of micromeritic properties, Carr's index, Hausner's ratio and angle of repose were satisfactory...
June 8, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28602135/development-of-an-effective-cell-seeding-technique-simulation-implementation-and-analysis-of-contributing-factors
#15
Naser Nasrollahzadeh, Lee Laurent-Applegate, Dominique P Pioletti
Cell seeding in a biomaterial is an important process for tissue engineering applications. It helps to modulate tissue formation or to control initial conditions for mechanobiological studies. The compression release-induced suction (CRIS) seeding technique leads to active infiltration of the cell suspension toward the central region of the scaffold. Its effectiveness, however, may significantly vary depending on several controlling factors such as the rate of loading and unloading or scaffold architecture...
June 10, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28602048/injected-corticosteroids-for-treating-plantar-heel-pain-in-adults
#16
REVIEW
Judy A David, Venkatesan Sankarapandian, Prince Rh Christopher, Ahana Chatterjee, Ashish S Macaden
BACKGROUND: Plantar heel pain, commonly resulting from plantar fasciitis, often results in significant morbidity. Treatment options include nonsteroidal anti-inflammatory drugs (NSAIDs), orthoses, physical therapy, physical agents (e.g. extracorporeal shock wave therapy (ESWT), laser) and invasive procedures including steroid injections. OBJECTIVES: To assess the effects (benefits and harms) of injected corticosteroids for treating plantar heel pain in adults. SEARCH METHODS: We searched the Cochrane Bone, Joint and Muscle Trauma Group Specialised Register, the Cochrane Central Register of Controlled Trials (the Cochrane Library), MEDLINE, Embase, CINAHL, clinical trials registries and conference proceedings...
June 11, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28600746/dopamine-induces-inhibitory-effects-on-the-circular-muscle-contractility-of-mouse-distal-colon-via-d1-and-d2-like-receptors
#17
Michelangelo Auteri, Maria Grazia Zizzo, Antonella Amato, Rosa Serio
Dopamine (DA) acts as gut motility modulator, via D1- and D2-like receptors, but its effective role is far from being clear. Since alterations of the dopaminergic system could lead to gastrointestinal dysfunctions, a characterization of the enteric dopaminergic system is mandatory. In this study, we investigated the role of DA and D1- and D2-like receptors in the contractility of the circular muscle of mouse distal colon by organ-bath technique. DA caused relaxation in carbachol-precontracted circular muscle strips, sensitive to domperidone, D2-like receptor antagonist, and mimicked by bromocriptine, D2-like receptor agonist...
June 9, 2017: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28596597/smart-microparticles-with-a-ph-responsive-macropore-for-targeted-oral-drug-delivery
#18
Ankit Kumar, Carlo Montemagno, Hyo-Jick Choi
The development of a smart microencapsulation system programmed to actively respond to environmental pH change has long been recognized a key technology in pharmaceutical and food sciences. To this end, we developed hollow microparticles (MPs) with self-controlled macropores that respond to environmental pH change, using an Oil-in-Water emulsion technique, for oral drug delivery. We observed that freeze-drying of MPs induced closure of macropores. The closing/opening behavior of macropores was confirmed by exposing MPs encapsulating different ingredients (sulforhodamine b, fluorescent nanoparticles, and lactase) to simulated gastrointestinal (GI) fluids...
June 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28596111/high-fat-diet-disrupts-endoplasmic-reticulum-calcium-homeostasis-in-the-rat-liver
#19
Emily S Wires, Kathleen A Trychta, Susanne Bäck, Agnieszka Sulima, Kenner C Rice, Brandon K Harvey
BACKGROUND & AIMS: Disruption to endoplasmic reticulum (ER) calcium homeostasis has been implicated in obesity, however, the ability to longitudinally monitor ER calcium fluctuations has been challenging with prior methodologies. We recently described the development of a Gaussia luciferase (GLuc)- based reporter protein responsive to ER calcium depletion (GLuc-SERCaMP) and investigated the effect of a high fat diet on ER calcium homeostasis. METHODS: A GLuc-based reporter cell line was treated with palmitate, a free fatty acid (FFA)...
June 5, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28594888/semiochemicals-released-from-five-bacteria-identified-from-animal-wounds-infested-by-primary-screwworms-and-their-effects-on-fly-behavioral-activity
#20
Junwei J Zhu, Muhammad F Chaudhury, Lisa M Durso, Agustin Sagel, Steven R Skoda, Nadia S Jelvez-Serra, Euzebio Goulart Santanab
BACKGROUND: The Primary screwworm, Cochliomyia hominivorax (Coquerel), is a serious pest feeding on living flesh of any warm-blooded animal, including humans. It was eradicated from the United States in the early 1980s using the sterile male technique. However, it was recently detected in populations of wild deer and pets in the Florida Keys of the US. For monitoring purposes, screwworm flies are normally trapped using attractant bait with liver. However, there has been little effort to develop an efficient monitoring system for detection of screwworm flies using a specific synthetic attractant blend...
2017: PloS One
keyword
keyword
21957
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"