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Journal of Microencapsulation

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https://www.readbyqxmd.com/read/28425304/preparation-and-evaluation-of-1-deoxynojirimycin-sustained-release-pellets-vs-conventional-immediate-release-tablets
#1
Zhaoying Sun, Shujie Yuan, Huanan Zhao, Zhenyang Wang, Zhiming Liu
1-deoxynojirimycin sustained-release pellets, which exhibit known release and absorption profiles, are used for the treatment of diabetes mellitus. In this study, a fluidized bed coater was employed to prepare new, drug-loaded pellets. In the dissolution test, it was found that 1-DNJ pellets exhibited a sustained release effect after being coated with .hydroxypropyl methely cellulose phthalate-55S. For sustained-release pellets and immediate-release pellets, there was significant difference in the mean cumulative drug concentration profile in different media evaluation...
April 20, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28420311/exploring-the-effect-of-formulation-parameters-on-the-particle-size-of-carboxymethyl-chitosan-nanoparticles-prepared-via-reverse-micellar-crosslinking
#2
Zeinab Sadat Sheikholeslami, Hamed Salimi-Kenari, Mohammad Imani, Mohammad Atai, Azizollah Nodehi
Carboxymethyl chitosan (CMCh), as a non-toxic, biocompatible and biodegradable semi-synthetic biopolymer with mucoadhesive properties is widely investigated for targeting drug or gene delivery applications. Here, fabrication of CMCh nanoparticles will be reported using a reverse (w/o) micellar system to provide particles with tunable mean sizes. Reverse microemulsions was prepared by dispersing aqueous solution of CMCh in n-hexane using sodium-bis(ethylhexyl)-sulfosuccinate (AOT) and glutaraldehyde (GA) as an emulsifier and a crosslinking agent, respectively...
April 19, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28420308/nanodispersion-loaded-mucoadhesive-polymeric-inserts-for-prolonged-treatment-of-postoperative-ocular-inflammation
#3
Nadia Morsi, Dalia Ghorab, Hanan Refai, Hoda Teba
Mucoadhesive polymeric films incorporated with ketorolac tromethamine loaded nanodispersion aiming the sustained delivery of the drug to the cornea have been developed and characterized for the treatment of postoperative ocular inflammation. Nanodispersions were prepared by ionic gelation method with various concentrations of chitosan and sodium tripolyphosphate. The developed nanodispersions were analyzed for morphology, particle size, dispersion homogeneity, zeta potential, entrapment efficiency and drug release...
April 19, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28378596/bcg-loaded-chitosan-microparticles-interaction-with-macrophages-and-preliminary-in-vivo-studies
#4
Liliana Aranha Caetano, Lara Figueiredo, António J Almeida, L M D Gonçalves
The aim of this study was to develop a novel BCG-loaded chitosan vaccine with high association efficiency which can afford efficient interaction with APC and elicit local and Th1-type-specific immune response after intranasal administration. Chitosan-suspended BCG and BCG-loaded chitosan-alginate microparticles were prepared by ionotropic gelation. Interaction with APC was evaluated by fluorescence microscopy using rBCG-GFP. Specific immune responses were evaluated following intranasal immunisation of mice...
April 19, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28350268/molecular-and-biopharmaceutical-investigation-of-alginate-inulin-synbiotic-coencapsulation-of-probiotic-to-target-the-colon
#5
Abdelbasset Atia, Ahmed I Gomma, Ismail Fliss, Eric Beyssac, Ghislain Garrait, Muriel Subirade
Colon targeting, as a site-specific delivery for oral formulation, remains a major challenge, especially for sensitive bioactive components such as therapeutic forms of phages, live attenuated virus and prebiotics-probiotics association. Synbiotics could be used to protect encapsulated probiotics during the gastrointestinal tract and control their release in the colon. To achieve these goals, effective prebiotics, such as inulin, could be combined with alginate - the most exploited polymer used for probiotic encapsulation - in the form of beads...
April 19, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28406043/cardioprotective-effect-of-magnetic-hydrogel-nanocomposite-loaded-n-%C3%AE-l-rhamnopyranosyl-vincosamide-isolated-from-moringa-oleifera-leaves-against-doxorubicin-induced-cardiac-toxicity-in-rats-in-vitro-and-in-vivo-studies
#6
Mostafa Cheraghi, Mehrdad Namdari, Hadis Daraee, Babak Negahdari, Hammed T Aiyelabegan
Cardioprotective effect of N, α-L-rhamnopyranosyl vincosamide (VR), isolated from the leaves of Moringa oleifera plant in doxorubicin-induced cardiac toxicity rats was evaluated. Twelve (12) rats were randomly selected into 3 groups; 2 rats received distilled water in the control group, 5 rats in group I received varying concentration of VR treatment, and group II containing 5 rats received varying concentration of VR-loaded magnetic hydrogel nanocomposite. Malondialdehyde (MDA), glutathione peroxidase (GSH) and superoxide dismutase (SOD) enzymes activities level were analysed after two weeks...
April 13, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28393603/improving-functional-properties-of-pea-protein-isolate-for-microencapsulation-of-flaxseed-oil
#7
Poonam R Bajaj, Kanishka Bhunia, Leslie Kleiner, Helen S Joyner Melito, Denise Smith, Girish Ganjyal, Shyam S Sablani
Unhydrolyzed pea protein (UN) forms very viscous emulsions when used at higher concentrations. To overcome this, UN was hydrolyzed using enzymes Alcalase, Flavourzyme, Neutrase, Alcalase-Flavourzyme and Neutrase-Flavourzyme at 50°C for 0 min, 30 min, 60 min and 120 min to form hydrolyzed proteins A, F, N, AF and NF, respectively. All hydrolyzed proteins had lower apparent viscosity and higher solubility than UN. Foaming capacity of A was highest, followed by NF, N, and AF. Hydrolyzed proteins N60, A60, NF60 and AF60 were prepared by hydrolyzing UN for 60 min and used further for microencapsulation...
April 10, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28385044/eucalyptus-oil-loaded-microcapsules-grafted-to-cotton-fabrics-for-acaricidal-effect-against-dermatophagoides-farina
#8
Joo Ran Kim
The purpose of this study was to develop acaricidal cotton fabrics grafted with eucalyptus oil-loaded microcapsules (EOMCs) produced from green resources. EOMCs showed a broad size distribution between 0.5 and 6.5 µm and had the average diameter 1.8 µm. EOMCs exhibited nonporous spherical shapes and individually remained on cotton fibers. Through AATCC mortality tests against HDMs (Dermatophagoides farinae), the treated cotton fabric containing EOMCs resulted in 98.7% mortality. Acaricidal efficiency was due to the large amount of oxygenated monoterpene, 1,8-eucalyptol (75...
April 7, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28378606/efficacy-of-nano-and-microemulsion-based-topical-gels-in-delivery-of-ibuprofen-an-in-vivo-study
#9
Mosayeb Azizi, Fariba Esmaeili, Ali Reza Partoazar, Shahram Ejtemaei Mehr, Amir Amani
AIM: Nanoemulsion have shown many advantages in drug delivery systems. In this study, for the first time, analgesic and anti-inflammatory properties of a nanomelusion of almond oil with and without ibuprofen was compared with corresponding microemulsion and commercial topical gel of the drug using formalin and carrageenan tests, respectively. METHOD: Almond oil (oil phase) was mixed with Tween 80 and Span 80 (surfactants), and ethanol (co-surfactant) and them distilled water (aqueous phase) was then added to the mixture at once...
April 5, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28378597/preparation-of-intravenous-injection-nanoformulation-of-cholesterylated-gemcitabine-by-co-assemble-with-cholesterylated-mpeg
#10
Yanyun Xu, Xin Zhong, Xiongwen Zhang, Wei Lu, Jiahui Yu, Jin Huang
The objective of this study was to prepare the CHS-mPEG/CHS-dFdC nanoformulation could be administrated through intravenous injection in nude mice. Particularly, CHS-mPEG was selected to co-assemble with CHS-dFdC to improve the prodrug concentration and enhance the stability of nanoformulation. The nanoformulation could be prepared by codissolution-coprecipitation. All of the nanoformulations kept stable in PBS at 4°C or simulative human plasma at 37°C. As molar ratios of CHS-mPEG1900/CHS-dFdC increased from 0...
April 5, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28345377/green-microparticles-based-on-a-chitosan-lactobionic-acid-linoleic-acid-association-characterization-and-evaluation-as-a-new-carrier-system-for-cosmetics
#11
C Chaouat, S Balayssac, M Malet-Martino, F Belaubre, E Questel, A M Schmitt, S Poigny, S Franceschi, E Perez
The association chitosan/linoleic acid/lactobionic acid in aqueous solution spontaneously led to the formation of stable microparticles with a liquid hydrophobic core consisting of linoleic acid surrounded by a shell of chitosan/lactobionic acid. The originality of the microparticles arises from the fact that they are formed by the association of three ingredients of cosmetic interest, including a skin penetration enhancer (linoleic acid). DLS measurements showed microparticles with a mean diameter of 1 to 2 µm...
March 27, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28338368/alginate-and-whey-protein-based-multilayered-particles-production-characterization-and-resistance-to-ph-ionic-strength-and-artificial-gastric-intestinal-fluid
#12
Gislaine Ferreira Nogueira, Ana Silvia Prata, Carlos Raimundo Ferreira Grosso
Multiple layers of whey protein and sodium alginate were assembled onto gelled alginate microparticles using electrostatic interaction. An experimental design was employed to evaluate the effect of the concentration of both hydrocolloids on the amount of protein that was adsorbed. In the first layer, a higher protein adsorption 32.5% w/w was obtained at pH 3.75. In the multilayered particle, the protein adsorbed reached 64.9% w/w. An analysis of protein solubilization verified that 22% w/w was solubilized at an acidic pH (pH 2...
March 24, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28298154/advanced-characterisation-of-encapsulated-lipid-powders-regarding-microstructure-by-time-domain-nuclear-magnetic-resonance
#13
Annika Linke, Theresa Anzmann, Jochen Weiss, Reinhard Kohlus
Encapsulation is an established technique to protect sensitive materials from environmental stress. In order to understand the physical protection mechanism against oxidation, knowledge about the powder microstructure is required. Time domain-nuclear magnetic resonance (TD-NMR) has the potential to determine the surface oil (SO) and droplet size distribution by relaxation and restricted self-diffusion, respectively. The amount of SO, the retention and encapsulation efficiency are determined based on a lipid balance...
March 15, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28288552/microencapsulation-of-theobroma-cacao-l-waste-extract-optimization-using-response-surface-methodology
#14
Taís Vanessa Gabbay Alves, Russany Silva da Costa, Bahar Aliakbarian, Alessandro Alberto Casazza, Patrizia Perego, José Otávio Carréra Silva Júnior, Roseane Maria Ribeiro Costa, Attilio Converti
The cocoa extract (Theobroma cacao L.) has a significant amount of polyphenols (TP) with potent antioxidant activity (AA). This study aims to optimise microencapsulation of the extract of cocoa waste using chitosan and maltodextrin. Microencapsulation tests were performed according to a Box-Behnken factorial design, and the results were evaluated by response surface methodology with temperature, maltodextrin concentration (MD) and extract flowrate (EF) as independent variables, and the fraction of encapsulated TP, TP encapsulation yield, AA, yield of drying and solubility index as responses...
March 13, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28264603/cardiac-failure-detection-in-30%C3%A2-minutes-new-approach-based-on-gold-nanoparticles
#15
Mehrdad Namdari, Babak Negahdari, Mostafa Cheraghi, Hammed T Aiyelabegan, Ali Eatmadi
Cardiac failure occurs when heart is unable to pump sufficiently to maintain blood flow to meet the body's needs. The aim of this work is to detect highly expressed genes: follistatin-related protein 1 (FSTL1) in heart failure within 30 minutes, using gold nanoparticles. Gold nanoparticles were prepared by citrate reduction of HAuCl4 3H2O; probe sequence was designed based on the FSTL1 gene region. Preparation of gold nanoprobes (AuNPs) proceeded by treating all the containers with DEPC-treated water, followed by reduction and conjugation...
March 7, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28097930/encapsulation-of-sesbania-grandiflora-extract-in-polymeric-micelles-to-enhance-its-solubility-stability-and-antibacterial-activity
#16
Pimporn Anantaworasakul, Siriporn Okonogi
Clinical applications of Sesbania grandiflora bark extract (SGE) are limited because of its poor water solubility and stability. SGE was loaded in micelles of Pluronics. In vitro and in vivo antibacterial and toxicity tests were investigated using broth dilution and silkworm model. Aqueous solubility of SGE was improved by these micelles. Activity and toxicity of SGE loaded micelles were dependent on type and concentration of Pluronics. The micelles composed of 1:3 SGE to Pluronic F68 (SGE-PF68-13) showed small size (24...
February 5, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28152634/effect-of-solid-lipid-s-structure-on-nanostructured-lipid-carriers-encapsulated-with-sun-filter-characterization-photo-stability-and-in-vitro-release
#17
Ke Wang, Qianjie Zhang, Yu-Lian Miao, Shao-Qiang Luo, Hong-Cai Wang, Wan-Ping Zhang
Three series of solid lipid are formulated in lipid nanoparticles carrier (NLC) system which encapsulated with sun filter to evaluate the effect on the physicochemical properties of the nanocarriers. Production is performed by ultrasonication-homogenization, analysis by particle size, Zeta Potential (ZP), Transmission Electron Microscope (TEM), Fourier Transform Infrared Spectroscopy (FT-IR), Differential Scanning Calorimetry (DSC), X-ray Diffraction (XRD). Moreover, the Encapsulation Efficiency (EE), Ultraviolet (UV) performance and in vitro release are also investigated...
February 3, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28151040/design-of-peg-grafted-pla-nanoparticles-as-oral-permeability-enhancer-for-p-gp-substrate-drug-model-famotidine
#18
Mohamed Mokhtar, Patrick M Gosselin, François Lacasse, Patrice Hildgen
Bioavailability of oral drugs can be limited by an intestinal excretion process mediated by P-glycoprotein (P-gp). Polyethylene glycol (PEG) is a known P-gp inhibitor. Dispersion of Famotidine (a P-gp substrate) within PEGylated nanoparticles (NPs) was used to improve its oral bioavailability. In this work, we evaluated the potential impact of NPs prepared from a grafted copolymer of polylactic acid and PEG on P-gp function by studying in vitro permeability of Famotidine across Caco-2 cells. Copolymers of PEG grafted on polylactic acid a (PLA) backbone (PLA-g-PEG) were synthesized with 1 mol% and 5 mol% PEG vs...
February 2, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28097914/nanostructured-lipid-carriers-nlc-for-the-delivery-of-natural-molecules-with-antimicrobial-activity-production-characterisation-and-in-vitro-studies
#19
Rita Cortesi, Giuseppe Valacchi, Ximena Maria Muresan, Markus Drechsler, Catia Contado, Elisabetta Esposito, Alessandro Grandini, Alessandra Guerrini, Giuseppe Forlani, Gianni Sacchetti
This study describes the preparation, characterisation and in vitro activity of nanostructured lipid carriers (NLCs) encapsulating natural molecules with antimicrobial activity, such as plumbagin, hydroquinon, eugenol, alpha-asarone and alpha-tocopherol. NLCs were prepared by melt and ultrasonication method, characterised by Cryo-TEM for morphology and SdFFF for dimensional distribution and active encapsulation yields. In vitro tests were conducted on bacteria, fungi and human cell cultures. In vitro tests demonstrated that plumbagin is strongly toxic towards F...
February 2, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28084127/vincristine-and-%C3%A9-viniferine-loaded-plga-b-peg-nanoparticles-pharmaceutical-characteristics-cellular-uptake-and-cytotoxicity
#20
Yüksel Öğünç, Müzeyyen Demirel, Arzu Yakar, Zerrin İncesu
The objective of this study was to prepare the ɛ-viniferine and vincristine-loaded PLGA-b-PEG nanoparticle and to investigate advantages of these formulations on the cytotoxicity of HepG2 cells. Prepared nanoparticle has shown a homogeneous distribution with 113 ± 0.43 nm particle size and 0.323 ± 0.01 polydispersity index. Zeta potential was determined as -35.03 ± 1.0 mV. The drug-loading percentages were 6.01 ± 0.23 and 2.01 ± 0.07 for ɛ-viniferine and vincristine, respectively...
February 2, 2017: Journal of Microencapsulation
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