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https://www.readbyqxmd.com/read/29035880/immunoregulation-of-neutrophil-extracellular-trap-formation-by-endothelial-derived-p33-gc1q-receptor
#1
Ariane Neumann, Praveen Papareddy, Johannes Westman, Ole Hyldegaard, Johanna Snäll, Anna Norrby-Teglund, Heiko Herwald
The formation of neutrophil extracellular traps (NETs) is a host defence mechanism, known to facilitate the entrapment and growth inhibition of many bacterial pathogens. It has been implicated that the translocation of myeloperoxidase (MPO) from neutrophilic granules to the nucleus is crucial to this process. Under disease conditions, however, excessive NET formation can trigger self-destructive complications by releasing pathologic levels of danger-associated molecular pattern molecules (DAMPs). To counteract such devastating immune reactions, the host has to rely on precautions that help circumvent these deleterious effects...
October 17, 2017: Journal of Innate Immunity
https://www.readbyqxmd.com/read/29035561/enhancing-photochemical-internalization-of-dox-through-a-porphyrin-based-amphiphilic-block-copolymer
#2
Jia Tian, Lei Xu, Yudong Xue, Xiaoze Jiang, Weian Zhang
Drug resistance is a primary obstacle that seriously reduces therapy efficiency of most chemotherapeutic agents. To address this issue, the photochemical internalization (PCI) was employed to help the anticancer drug escape from lysosome and improve their translocation to the nucleus. Herein, a pH-sensitive porphyrin-based amphiphilic block copolymer (PEG113-b-PCL54-a-porphyrin) was synthesized, which was acted not only as a carrier for the delivery of DOX, but also as a photosensitizer for PCI.PEG113-b-PCL54-a-porphyrin as a drug carrier exhibited a higher drug loading capacity, entrapment efficiency and DOX release content...
October 16, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/29035132/hybrid-lipid-polymer-nanoparticles-for-pulmonary-delivery-of-sirna-development-and-fate-upon-in-vitro-deposition-on-the-human-epithelial-airway-barrier
#3
Ivana d'Angelo, Gabriella Costabile, Estelle Durantie, Paola Brocca, Valeria Rondelli, Annapina Russo, Giulia Russo, Agnese Miro, Fabiana Quaglia, Alke Petri-Fink, Barbara Rothen-Rutishauser, Francesca Ungaro
BACKGROUND: Nowadays, the downregulation of genes involved in the pathogenesis of severe lung diseases through local siRNA delivery appears an interesting therapeutic approach. In this study, we propose novel hybrid lipid-polymer nanoparticles (hNPs) consisting of poly(lactic-co-glycolic) acid (PLGA) and dipalmitoyl phosphatidylcholine (DPPC) as siRNA inhalation system. METHODS: A panel of DPPC/PLGA hNPs was prepared by emulsion/solvent diffusion and fully characterized...
October 16, 2017: Journal of Aerosol Medicine and Pulmonary Drug Delivery
https://www.readbyqxmd.com/read/29034836/nanomedicine-for-intranasal-delivery-to-improve-brain-uptake
#4
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/29033219/sherwood-correlation-for-dissolution-of-pooled-napl-in-porous-media
#5
Derya Aydin Sarikurt, Cagri Gokdemir, Nadim K Copty
The rate of interphase mass transfer from non-aqueous phase liquids (NAPLs) entrapped in the subsurface into the surrounding mobile aqueous phase is commonly expressed in terms of Sherwood (Sh) correlations that are expressed as a function of flow and porous media properties. Because of the lack of precise methods for the estimation of the interfacial area separating the NAPL and aqueous phases, most studies have opted to use modified Sherwood expressions that lump the interfacial area into the interphase mass transfer coefficient...
October 4, 2017: Journal of Contaminant Hydrology
https://www.readbyqxmd.com/read/29032677/ultrasensitive-ratiometric-homogeneous-electrochemical-microrna-biosensing-via-target-triggered-ru-iii-release-and-redox-recycling
#6
Panpan Gai, Chengcheng Gu, Haiyin Li, Xinzhi Sun, Feng Li
A new label-free and enzyme-free ratiometric homogeneous electrochemical microRNA biosensing platform was constructed via target-triggered Ru(III) release and redox recycling. To design the effective ratiometric dual-signal strategy, [Ru(NH3)6](3+) (Ru(III)) as one of electroactive probe was ingeniously entrapped in the pores of positively charged mesoporous silica nanoparticle (PMSN), as well as another electroactive probe [Fe(CN)6](3-) (Fe(III)) was selected to facilitate Ru(III) redox reclycling due to their distinctly separated reduction potential and different redox properties...
October 16, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29032674/doxorubicin-loaded-unimolecular-micelles-stabilized-gold-nanoparticles-as-a-theranostic-nanoplatform-for-tumor-targeted-chemotherapy-and-ct-imaging
#7
Wenjing Lin, Xiaofang Zhang, Long Qian, Na Yao, Ya Pan, Lijuan Zhang
Current researches are mainly trend to address the development of multi-functional nanocarriers which could precisely reach the disease sites, release drugs in a controlled-manner and act as an imaging agent for both diagnosis and targeted therapy. In this study, a pH-sensitive theranostic nanoplatform as a promising dual-functional nanovector for tumor therapy and CT imaging was developed. 21-arm star like triblock polymerof β-cyclodextrin-{poly(-caprolactone)-poly(2-aminoethyl methacrylate)-poly[poly(ethylene glycol) methyl ether methacrylate]}21 [β-CD-(PCL-PAEMA-PPEGMA)21] with stable unimolecular micelles formed in aqueous solution was firstly synthesized by combined ROP with ARGET ATRP techniques, and then were used as template for fabrication of gold nanoparticles (AuNPs) with uniform sizes and excellent colloidal stability in situ, followed by the encapsulation of doxorubicin (DOX) with maximum entrapment efficiency up to 60% to generate the final product β-CD-(PCL-PAEMA-PPEGMA)21/AuNPs/DOX...
October 15, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/29032214/high-surface-area-mesoporous-activated-carbon-alginate-beads-for-efficient-removal-of-methylene-blue
#8
Asma Nasrullah, A H Bhat, Abdul Naeem, Mohamed Hasnain Isa, Mohammed Danish
High surface area mesoporous activated carbon-alginate (AC-alginate) beads were successfully synthesised by entrapping activated carbon powder derived from Mangosteen fruit peel into calcium-alginate beads for methylene blue (MB) removal from aqueous solution. The structure and surface characteristics of AC-alginate beads were analysed using Fourier transform infra-red (FTIR) spectroscopy, scanning electron microscopy (SEM) and surface area analysis (SBET), while thermal properties were tested using thermogravimetric analysis (TGA)...
October 12, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29032193/selenium-functionalized-liposomes-for-systemic-delivery-of-doxorubicin-with-enhanced-pharmacokinetics-and-anticancer-effect
#9
Qian Xie, Wenji Deng, Xue Yuan, Huan Wang, Zhiguo Ma, Baojian Wu, Xingwang Zhang
Liposomes have shown to be an excellent drug delivery system, but the short in vivo fate discourages their popularity. This work aimed to develop selenium-functionalized liposomes (SeLPs) for doxorubicin (Dox) delivery to prolong the systemic circulation of liposomes by in situ selenium coating and enhance the anticancer effect via the synergy between Dox and selenium. Dox-loaded SeLPs (Dox-SeLPs) were prepared by film hydration/active loading/in situ reduction technique and characterized by particle size, entrapment efficiency and morphology...
October 12, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/29031951/potential-of-cationic-polymeric-nanoparticles-for-oral-delivery-of-naringenin-in-vitro-and-in-vivo-investigations
#10
Sundeep Chaurasia, Ravi R Patel, Prasad Vure, Brahmeshwar Mishra
To improve the bioavailability and anticancer potential of naringenin (NRG) by developing a drug-loaded polymeric nano-delivery system. NRG-loaded eudragit E100 nanoparticle (NRG-EE100-NPs) system was developed, and physicochemically characterized. In vivo pharmacokinetic and in vitro cytotoxicity ability of the NRG-EE100-NPs was investigated. In vivo anticancer activity was evaluated in murine BALB/c mice-bearing colorectal tumor. The NRG-EE100-NPs had an optimum mean particle size (430.42±5.78nm), polydispersity index (0...
October 12, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29031028/risk-factors-for-death-in-dogs-treated-for-esophageal-foreign-body-obstruction-a-retrospective-cohort-study-of-222-cases-1998-2017
#11
A G Burton, C T Talbot, M S Kent
BACKGROUND: Limited data exist describing risk factors for death, and long-term outcomes in dogs with esophageal foreign body (EFB) obstruction. HYPOTHESIS/OBJECTIVES: To evaluate short- and long-term outcomes, and analyze risk factors for death in dogs with EFB obstruction. We hypothesized duration of entrapment and treatment type would affect outcome. ANIMALS: A total of 222 dogs were treated for EFB obstruction at an emergency and referral hospital between March 1998 and March 2017...
October 14, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/29030843/cclip-seq-retrieval-of-chimeric-reads-from-hits-clip-clip-seq-libraries
#12
Panagiotis Alexiou, Manolis Maragkakis, Zissimos Mourelatos, Anastassios Vourekas
HITS-CLIP (High-Throughput Sequencing after in vivo Crosslinking and Immunoprecipitation, CLIP-Seq) libraries contain fragments of the RNA sequences bound in vivo by an RNA binding protein (RBP). Such fragments, especially if they represent RNA duplexes bound in vivo by the RBP, can occasionally be ligated together to form chimeric CLIP tags. Chimeric CLIP tags from Argonaute CLIP libraries can provide the exact base pairing profiles of small RNAs with their target RNA sequences, thus solving a critical problem in the field of post-transcriptional regulation...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29030177/eprosartan-mesylate-loaded-bilosomes-as-potential-nano-carriers-against-diabetic-nephropathy-in-streptozotocin-induced-diabetic-rats
#13
Abdul Ahad, Mohammad Raish, Ajaz Ahmad, Fahad I Al-Jenoobi, Abdullah M Al-Mohizea
The objective of the present study was to formulate eprosartan mesylate loaded nano-bilosomes and investigates its potential for controlling streptozotocin induced diabetes nephropathy in Wistar rats. The eprosartan mesylate loaded nano-bilosomes comprising of various ratios of soybean phosphatidylcholine/sodium deoxycholate were prepared by thin film hydration technique. The prepared formulations were evaluated for vesicles size, polydispersity index, zeta potential and entrapment efficiency. Further the optimized formulation was characterized for vesicles morphology, and its efficacy for the management of diabetic nephropathy in Wistar rats...
October 10, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29028576/bioelectrochromic-hydrogel-for-fast-antibiotic-susceptibility-testing
#14
Ferran Pujol-Vila, Jiri Dietvorst, Laura Gall-Mas, María Díaz-González, Núria Vigués, Jordi Mas, Xavier Muñoz-Berbel
Materials science offers new perspectives in the clinical analysis of antimicrobial sensitivity. However, a biomaterial with the capacity to respond to living bacteria has not been developed to date. We present an electrochromic iron(III)-complexed alginate hydrogel sensitive to bacterial metabolism, here applied to fast antibiotic-susceptibility determination. Bacteria under evaluation are entrapped -and pre-concentrated- in the hydrogel matrix by oxidation of iron (II) ions to iron (III) and in situ formation of the alginate hydrogel in less than 2min and in soft experimental conditions (i...
September 6, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29027679/high-prevalence-of-betanodavirus-barfin-flounder-nervous-necrosis-virus-as-well-as-red-spotted-grouper-nervous-necrosis-virus-genotype-in-shellfish
#15
Y C Kim, W J Kwon, M S Kim, K I Kim, J G Min, H D Jeong
Using two serially executed PCRs, the discriminative multiplex two-step RT-PCR (DMT-2 RT-PCR) following the detection seminested two-step RT-PCR (DSN-2 RT-PCR), we found a high frequency presence of BFNNV genotype as well as RGNNV in various domestic and imported shellfish. This was definitely different from the previous reports of outbreaks and asymptomatic infection only by the RGNNV genotype in cultured finfish in Korea. Cultivation of NNV entrapped in shellfish was performed successfully by a blind passage...
October 13, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/29026761/postherpetic-neuralgia-diabetic-neuropathy-and-trigeminal-neuralgia-chronic-peripheral-neuropathic-pain-in-58-480-rural-italian-primary-care-patients
#16
Nicola Buono, Hans Thulesius, Ferdinando Petrazzuoli, Elena Castelli, Marco Cambielli
INTRODUCTION: Chronic peripheral neuropathic pain (CPNP) is a condition due to peripheral nervous system diseases or injury, but its prevalence is unknown in Italian primary care. AIM: The aim of this study is to assess the prevalence of CPNP in a rural primary care area in Northern Italy. MATERIALS AND METHODS: A multicenter audit study was carried out in a rural area in Northern Italy with 113 participating general practitioners (GPs) seeing 58,480 patients >18 years during 3 months...
January 2017: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/29026675/advantages-of-using-a-detachable-tip-microcatheter-and-liquid-embolic-agents-in-the-preoperative-embolization-of-a-recurrent-cerebellar-hemangioblastoma-a-case-report
#17
Nicolas Yanez, Luisa K Cifuentes, Marcela Mejia, Juan N Useche
BACKGROUND: The preferred treatment for intracranial hemangioblastomas is surgical resection with or without preoperative embolization, however, embolization remains controversial due to risks such as distal tip entrapment, vascular injury during navigation, and embolic agent migration. CASE DESCRIPTION: A 54-year-old woman was admitted for surgical resection and preoperative embolization of a cerebellar hemangioblastoma. Although experience using Onyx with detachable and nondetachable tip microcatheters has been well reported in a variety of clinical circumstances, we describe the first case of a presurgical embolization of an intra-axial tumor using a second-generation detachable-tip microcatheter and a nonadhesive liquid embolic agent...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29025650/ephemeral-biogels-to-control-anti-biofilm-agent-delivery-from-conception-to-the-construction-of-an-active-dressing
#18
Elodie Lefebvre, Pierre Lembre, Julien Picard, Lamia El-Guermah, Damien Seyer, Véronique Larreta Garde
Chronic wound colonization by bacterial biofilms is common and can cause various complications. An anti-biofilm strategy was developed around the co-entrapment of a commercially available antiseptic, PHMB (polyhexamethylene biguanide 4mgmL(-1)), with EDTA (Ethylen diamine tetra acetic acid, 20mM) in a gelatin gel. The two active compounds act synergistically against bacterial biofilms, but their efficiency is strongly reduced (16-fold) when entrapped inside the 5% gelatin gel, and they weaken the mechanical properties (50-fold) of the gel...
January 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/29025645/enhancing-the-anti-gastric-cancer-activity-of-curcumin-with-biocompatible-and-ph-sensitive-pmma-aa-zno-nanoparticles
#19
Raman Dhivya, Jothi Ranjani, Jeyaprakash Rajendhran, Jeyanthinath Mayandi, Jamespandi Annaraj
Curcumin loaded ZnO nanoparticles were successfully synthesised and encapsulated with co-polymer PMMA-AA (Cur/PMMA-AA/ZnO NPs). The ZnO nanoparticles have been converted as good cargo materials to carry the well-known hydrophobic drug curcumin by surface functionalization. Physical characteristics of these novel nanomaterials have been studied with transmission electron microscopy (TEM) and powder X-ray diffraction (XRD) in conjunction with spectral techniques. A narrow particle size distribution with an average value of 42nm was found via TEM...
January 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/29025636/folic-acid-grafted-and-tertiary-amino-based-ph-responsive-pentablock-polymeric-micelles-for-targeting-anticancer-drug-delivery
#20
Quan Chen, Jiewei Zheng, Xiaozhe Yuan, Jufang Wang, Lijuan Zhang
Increasing target to tumor sites and reducing accumulation at normal tissue sites of anticancer drugs are essential to improve the cancer chemotherapy efficiency. In this study, we have developed a novel pentablock polymeric poly(ethylene glycol)-b-(poly(2-(diethylamino) ethyl methacrylate)-b-poly (hydroxyethyl methacrylate)-g-folic acid)2 [PEG-b-(PDEAEMA-b-PHEMA-g-FA)2] micelles as anticancer drug nanocarrier. The carriers could target tumor cells rapidly, and response to the tumor sites pH to control drug release...
January 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
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