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Artificial Cells, Nanomedicine, and Biotechnology

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https://www.readbyqxmd.com/read/28346015/the-role-of-exosomes-derived-from-cerebrospinal-fluid-of-spinal-cord-injury-in-neuron-proliferation-in-vitro
#1
Fan-Long Kong, Xiao-Ping Wang, Ya-Nan Li, Hai-Xu Wang
Exosomes is a key component of cell paracrine secretion and can exert important effects in various disease models. However, the role of exosomes in neuron repair of spinal cord injury (SCI) has rarely been reported. In this study, Exosomes were isolated from cerebrospinal fluid of SCI and normal, and incubated neuron in vitro respectively to research its biological function in cell proliferation. The results demonstrated these exosomes all expressed CD9, CD63, CD81, Alix and Tsg101; however, only exosomes derived from cerebrospinal fluid of SCI could promote proliferation of neuron via ERK signaling pathway, and decrease cell apoptosis...
March 27, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28332430/preparation-of-pva-amino-multi-walled-carbon-nanotubes-nanocomposite-microspheres-for-endotoxin-adsorption
#2
Wenhui Zong, Jian Chen, Wenyan Han, Guanghui Cheng, Jie Chen, Yue Wang, Weichao Wang, Lailiang Ou, Yaoting Yu, Jie Shen
A novel polyvinyl alcohol-amino multi-walled carbon nanotube (PVA-AMWCNT) nanocomposite microsphere was prepared successfully for the first time and used for endotoxin removal. The resulting AMWCNT modified PVA microsphere was characterized by SEM, Raman spectrum and fluorescence image, which indicated AMWCNT was dispersed into the macropores of PVA microsphere uniformly. The PVA-AMWCNT microspheres showed better adsorption capability and faster adsorption equilibrium for endotoxin in aqueous solution when compared to the PVA microsphere with polymyxin B (PMB) as ligand...
March 23, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28328301/comparative-dna-isolation-behaviours-of-silica-and-polymer-based-sorbents-in-batch-fashion-monodisperse-silica-microspheres-with-bimodal-pore-size-distribution-as-a-new-sorbent-for-dna-isolation
#3
Gülçin Günal, Çiğdem Kip, S Eda Öğüt, Hasan İlhan, Güneş Kibar, Ali Tuncel
Monodisperse silica microspheres with bimodal pore-size distribution were proposed as a high performance sorbent for DNA isolation in batch fashion under equilibrium conditions. The proposed sorbent including both macroporous and mesoporous compartments was synthesized 5.1 μm in-size, by a "staged shape templated hydrolysis and condensation method". Hydrophilic polymer based sorbents were also obtained in the form of monodisperse-macroporous microspheres ca 5.5 μm in size, with different functionalities, by a developed "multi-stage microsuspension copolymerization" technique...
March 22, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28323508/nefopam-hydrochloride-loaded-microspheres-for-post-operative-pain-management-synthesis-physicochemical-characterization-and-in-vivo-evaluation
#4
Neelam Sharma, Sandeep Arora, Jitender Madan
Once-daily oral dosage of nefopam hydrochloride loaded sustained release microspheres (NPH-MS) was investigated as novel therapeutic strategy for post-operative pain management. Microspheres were synthesized using poly-3-hydroxybutyrate and poly-(ɛ-caprolactone) by double emulsion solvent evaporation technique. NPH-MS were characterized through FTIR, PXRD and SEM. In-vitro drug release study revealed sustained behavior till 24 h. Haemolysis was <5% which signified haemocompatibility of formulation. ED50 in rat tail-flick anti-nociceptive test was found ∼18...
March 21, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28318317/characterization-kinetics-and-thermodynamics-of-biosynthesized-uranium-nanoparticles-unps
#5
Mervate Aly Abostate, Youssry Saleh, Hamed Mira, Maysa Amin, Maha Al Kazindar, Basma Mahmoud Ahmed
The present study was carried out to explore the potential of the isolated bacterial strains isolated from Gabal El Sela in Eastern Dessert, Egypt for biosynthesis of uraninite nanoparticles intracellularly. The most potent bacterial strains associated (intra) with uranium nanoparticles were characterized by transmission electron microscope (TEM), Fourier transform infrared (FTIR) and Energy Dispersive X-ray (EDX). Studying factors affecting biosynthesis of uranium nanoparticles indicated that the optimum conditions were 6000 ppm uranium concentrations at pH 7...
March 20, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28296511/targeted-delivery-of-doxorubicin-into-tumor-cells-by-nanostructured-lipid-carriers-conjugated-to-anti-egfrviii-monoclonal-antibody
#6
Saeideh Abdolahpour, Tayebeh Toliyat, Kobra Omidfar, Helmout Modjtahedi, Albert J Wong, Mohammad Javad Rasaee, Susan Kashanian, Maliheh Paknejad
Epidermal growth factor receptor variant III (EGFRvIII) is the most common variant of the EGF receptor in many human tumors. This variant is tumor specific and highly immunogenic, thus, it can be used as a target for targeted drug delivery toward tumor cells. The major aim of this study was to develop an EGFRvIII-mediated drug delivery system by anti-EGFRvIII monoclonal antibody (MAb) conjugated to doxorubicin (Dox)-loaded nanostructured lipid carriers (NLC) to enhance the targeting specificity and cytotoxic effect of Dox on EGFRvIII-overexpressing cell line...
March 15, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28290712/development-of-olmesartan-medoxomil-lipid-based-nanoparticles-and-nanosuspension-preparation-characterization-and-comparative-pharmacokinetic-evaluation
#7
Arun B, Narendar D, Kishan Veerabrahma
The aim was to enhance the oral bioavailability of olmesartan medoxomil (OM) by preparing solid lipid nanoparticles (SLNs) and comparing with nanosuspension (OM-NS). OM-SLNs and OM-NS were prepared by known methods. Prepared SLNs were evaluated for physical characters and in vivo pharmacokinetic (PK) performance in rats. OM-NS showed more than four-fold increase in the solubility. During DSC and XRD studies, drug incorporated in SLNs was found to be in amorphous form. The relative bioavailability of OM-SLN and OM-NS was 7...
March 14, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28290213/cardamom-fruits-as-a-green-resource-for-facile-synthesis-of-gold-and-silver-nanoparticles-and-their-biological-applications
#8
Veronika Soshnikova, Yeon Ju Kim, Priyanka Singh, Yue Huo, Josua Markus, Sungeun Ahn, Verónica Castro-Aceituno, Jongpyo Kang, Mohan Chokkalingam, Ramya Mathiyalagan, Deok Chun Yang
Gold (FA-AuNps) and silver (FA-AgNps) nanoparticles were synthesized at room temperature by aqueous extract of dried fruits of Amomum villosum, also known as Fructus Amomi (cardamom), in order to confer antioxidant, catalytic, antimicrobial activities and treatment effect against breast cancer cells. Fruit extracts served as both reducing agents and stabilizers in lieu of chemical agents. Ultra-violet visible (UV-Vis) spectroscopy, field emission transmission electron microscopy (FE-TEM), energy-dispersive X-ray (EDX) spectroscopy, elemental mapping, X-ray powder diffraction (XRD), selected area electron diffraction (SAED), dynamic light scattering (DLS) and Fourier transform infrared (FTIR) spectroscopy were employed to characterize the biosynthesized nanoparticles...
March 14, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28272903/recent-advances-in-magnetoliposome-for-heart-drug-delivery
#9
Mehrdad Namdari, Mostafa Cheraghi, Babak Negahdari, Ali Eatemadi, Hadis Daraee
Magnetic nanoparticles (NPs) also have been subject of interest to the therapeutic and imaging field because of their unique magnetic properties. Magnetoliposomes (MLs) are made up of a combination of liposomes and magnetic NPs, and they have been proven to be a potential biomaterial to fields like magnetic-targeted drug delivery, MRI, etc. The efficiency of a drug delivery system to the heart determines the treatment strategy for most of the heart diseases. In this review article, we summarize the recent development and updates in the application of MLs as a drug delivery system for heart/cardiac diseases...
March 8, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28271902/a-new-support-material-for-igg-adsorption-syntrichia-papillosissima-copp-loeske
#10
Mithat Evrim Demir, Deniz Aktaş Uygun, Adnan Erdağ, Sinan Akgöl
In this presented work, Syntrichia papillosissima (Copp.) Loeske (S. papillosissima) was used as a natural phytosorbent for IgG purification. These moss species were collected for the natural habitat and prepared for IgG adsorption studies by cleaning, drying, and grinding to uniform size. Syntrichia papillosissima samples were characterized by using FTIR and SEM studies. Functional groups of S. papillosissima were identified by FTIR analysis, while surface characteristics were determined by SEM studies. A batch system was used for the adsorption of IgG onto S...
March 8, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28278576/anticancer-activity-of-sasa-borealis-leaf-extract-mediated-gold-nanoparticles
#11
Maheshkumar Prakash Patil, Xing Jin, Natasha Chantal Simeon, Jaymee Palma, Daniel Kim, Daniel Ngabire, Nan-Hee Kim, Naresh Hiralal Tarte, Gun-Do Kim
Advancements in metal nanoparticle synthesis using plant extracts and their anticancer activity have received significant attention in recent years. The green approach for the synthesis of gold nanoparticles (AuNPs) using leaf extract of Sasa borealis is reported in this study. Synthesis of AuNPs was performed at 50 °C, and nanoparticle formation was observed after 20 min incubation. AuNPs formation was confirmed by the UV-visible spectrum peak at 542 nm. The synthesized AuNPs were oval, spherical with sizes around 10-30 nm observed using the transmission electron microscope...
February 28, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28278575/vibrio-cholerae-lipopolysaccharide-loaded-chitosan-nanoparticle-could-save-life-by-induction-of-specific-immunoglobulin-isotype
#12
Mahdi Fasihi-Ramandi, Hamideh Ghobadi-Ghadikolaee, Sajjad Ahmadi-Renani, Ramezan Ali Taheri, Kazem Ahmadi
The lipopolysaccharide (LPS) of Vibrio cholerae (V. cholerae) plays an important role in cholera disease and the induction of primary protection. In this study, we evaluate mice humoral immune response in intranasal and intraperitoneal administrated V. cholerae LPS. The results showed that the intranasal administration of LPS-chitosan nanoparticle induced the high level of antibodies compared to intraperitoneal injection of antigen without chitosan (P < .001). These results indicated that intranasal and intraperitoneal administration of LPS has been able to induce the high level of antibodies both in the sera and lavage fluid and confirmed our strategy for using intranasal administration of antigen...
February 28, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28278577/translational-feasibility-of-soluble-nanobiotherapeutics-with-enhanced-red-blood-cell-functions
#13
Thomas Ming Swi Chang
No abstract text is available yet for this article.
February 24, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28278578/delivery-of-curcumin-by-a-ph-responsive-chitosan-mesoporous-silica-nanoparticles-for-cancer-treatment
#14
Navid Ahmadi Nasab, Hassan Hassani Kumleh, Mojtaba Beygzadeh, Shahram Teimourian, Mahmood Kazemzad
Mesoporous silica nanocarriers as accommodate drug molecule capsules were synthesized and capped by chitosan natural polymer. This nanocarrier acts as a pH-responsive shield to increase the solubility and improvement of anticancer properties of curcumin against U87MG glioblastoma cancer cell line. The encapsulation efficiency and drug-loading content were measured 88.1 ± 4.76% and 8.81 ± 0.47%, respectively. The curcumin release from the CS-MCM-41 was slow and sustained at low pH (42.72 ± 2.29%) compared to the environment pH (19...
February 23, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28278579/ph-activated-nano-amorphous-calcium-phosphate-based-cement-to-reduce-dental-enamel-demineralization
#15
Mary A S Melo, Michael D Weir, Vanara F Passos, Michael Powers, Hockin H K Xu
Enamel demineralization is destructive, esthetically compromised, and costly complications for orthodontic patients. Nano-sized amorphous calcium phosphate (NACP) has been explored to address this challenge. The 20% NACP-loaded ortho-cement notably exhibited favorable behavior on reducing demineralization of enamel around brackets in a caries model designed to simulate the carious attack. The 20% NACP-loaded ortho-cement markedly promotes higher calcium and phosphate release at a low pH, and the mineral loss was almost two fold lower and carious lesion depth decreased the by 1/3...
February 21, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28278582/prolonging-the-shelf-life-of-lumbricus-terrestris-erythrocruorin-for-use-as-a-novel-blood-substitute
#16
Christine Muzzelo, Christopher Neely, Payal Shah, Osheiza Abdulmalik, Jacob Elmer
Limitations associated with the storage of red blood cells have motivated the development of novel blood substitutes that are able to withstand long-term storage at elevated temperatures. The hemoglobin of the earthworm Lumbricus terrestris (LtEc) is an attractive blood substitute candidate, since it is resistant to oxidation and aggregation during storage. Several factors were investigated to optimize the thermal and oxidative stability of LtEc during storage, including pH, antioxidant supplements, and deoxygenation...
February 20, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28278581/application-of-new-zno-nanoformulation-and-ag-fe-zno-nanocomposites-as-water-based-nanofluids-to-consider-in-vitro-cytotoxic-effects-against-mcf-7-breast-cancer-cells
#17
Mohammad Hossein Abdolmohammadi, Faranak Fallahian, Zahra Fakhroueian, Mozhgan Kamalian, Peyman Keyhanvar, Faraz M Harsini, Azizollah Shafiekhani
Novel formulations of nanocomposites derived from ZnO nanoparticles have provided potential biomedical applications as a new strategy for treatment of breast cancer. In this research, two types of ZnO nanomaterials were synthesized by sol-gel hydrothermal process and co-precipitation containing fast quenching and also surface modification methods. The cytotoxic effects on growth of the breast cancer cell lines MCF-7 were evaluated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay...
February 20, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28278580/conjugated-anionic-peg-citrate-g2-dendrimer-with-multi-epitopic-hiv-1-vaccine-candidate-enhance-the-cellular-immune-responses-in-mice
#18
Asghar Abdoli, Nina Radmehr, Azam Bolhassani, Akram Eidi, Parvaneh Mehrbod, Fatemeh Motevalli, Zahra Kianmehr, Mohsen Chiani, Mehdi Mahdavi, Shaghayegh Yazdani, Mehdi Shafiee Ardestani, Mohammad Reza Kandi, Mohammad Reza Aghasadeghi
Multi-epitope vaccines might cause immunity against multiple antigenic targets. Four immunodominant epitopes of HIV-1 genome were used to construct a polytope vaccine, formulated by dendrimer. Two regimens of polytopes mixture with dendrimer were utilized to immunize BALB/c mice. Adjuvants were also used to boost immune responses. The conjugated polytope could arouse significant cellular immune responses (P < 0.05) and Th1 response showed higher intensity compared to Th2 (P < 0.05). Our study depicted that conjugated dendrimer with multi-epitopic rHIVtop4 would efficiently induce cell-mediated immune responses and might be considered as promising delivery system for vaccines formulation...
February 20, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28278584/liposome-targeted-delivery-for-highly-potent-drugs
#19
Hassan Bardania, Shabnam Tarvirdipour, Farid Dorkoosh
Considerable adverse side effects and cytotoxicity of highly potent drugs for healthy tissue require the development of novel drug delivery systems to improve pharmacokinetics and result in selective distribution of the loaded agent. The introduction of targeted liposomal formulations has provided potential solutions for improved drug delivery to cancer cells, penetrating delivery through blood-brain barrier and gene therapy. A large number of investigations have been developed over the past few decades to overcome pharmacokinetics and unfavorable side effects limitations...
February 17, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28278583/hydrophobically-modified-polyethylenimine-based-ternary-complexes-for-targeting-brain-tumor-stability-in-vitro-and-in-vivo-studies
#20
Brahmanand Dube, Abhijeet Pandey, Ganesh Joshi, Krutika Sawant
Hydrophobic modification of low molecular weight polyethylenimine (PEI 2 kDa) by cholic acid (ChA) was done to obtain PEI2-ChA. The nanoplexes of PEI2-ChA with gWIZ-GFP demonstrated increase transfection efficiency (∼27%) in NT8e cell lines. The cell-cycle analysis of NT8e cells (p53 mutant) treated with transferrin containing nanoplexes showed increased apoptosis of cells. In vitro protein expression revealed expression of exogenous p53 protein. In vivo imaging of mice showed localized signal for GFP protein in brain region...
February 17, 2017: Artificial Cells, Nanomedicine, and Biotechnology
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