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Nanomedicine

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https://www.readbyqxmd.com/read/29792369/gene-delivery-in-the-cornea-in-vitro-ex-vivo-evaluation-of-solid-lipid-nanoparticle-based-vectors
#1
Mónica Vicente-Pascual, Andrea Albano, María Á Solinís, Loredana Serpe, Alicia Rodríguez-Gascón, Federica Foglietta, Elisabetta Muntoni, Josune Torrecilla, Ana Del Pozo-Rodríguez, Luigi Battaglia
AIM: Inflammation is a process that underlies sight-threatening ocular surface diseases, and gene supplementation with the plasmid that encodes for p-IL10 will allow the sustained de novo synthesis of the cytokine to occur in corneal cells, and provide a long-term anti-inflammatory effect. This work describes the development of solid lipid nanoparticle systems for the delivery of p-IL10 to transfect the cornea. RESULTS: In vitro, vectors showed suitable features as nonviral vectors (size, ζ-potential, DNA binding, protection and release), and they were able to enter and transfect human corneal epithelial cells...
May 24, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29786467/bombesin-functionalized-64-cu-copper-sulfide-nanoparticles-for-targeted-imaging-of-orthotopic-prostate-cancer
#2
Huawei Cai, Fang Xie, Aditi Mulgaonkar, Lihong Chen, Xiankai Sun, Jer-Tsong Hsieh, Fangyu Peng, Rong Tian, Lin Li, Changqiang Wu, Hua Ai
AIM: To synthesize and evaluate the imaging potential of Bom-PEG-[64 Cu]CuS nanoparticles (NPs) in orothotopic prostate tumor. MATERIALS & METHODS: [64 Cu]CuS NPs were synthesized in aqueous solution by 64 CuCl2 and Na2 S reaction. Then PEG linker with or without bombesin peptide were conjugated to the surface of [64 Cu]CuS NPs to produce Bom-PEG-[64 Cu]CuS and PEG-[64 Cu]CuS NPs. These two kinds of NPs were used for testing specific uptake in prostate cancer cells in vitro and imaging of orthotopic prostate tumor in vivo...
May 22, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29786466/mineralo-organic-nanoparticles-in-health-and-disease-an-overview-of-recent-findings
#3
Jan Martel, Cheng-Yeu Wu, Hsin-Hsin Peng, John D Young
We observed earlier that mineralo-organic nanoparticles form in human body fluids when the concentrations of calcium, carbonate and phosphate exceed saturation. The particles have been shown to represent mineral precursors in developing bones and teeth as well as in ectopic calcification and kidney stones. Recent studies suggest that the mineral particles may also be involved in other physiological processes, including immune tolerance against the gut microbiota and food antigens. We review here the involvement of mineralo-organic nanoparticles in physiological and pathological processes and discuss recent findings that reveal novel and unexpected roles for these particles in the human body...
May 22, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29749804/radiosensitizing-effects-of-different-size-bovine-serum-albumin-templated-gold-nanoparticles-on-h22-hepatoma-bearing-mice
#4
ShuLiang Liu, JinMei Piao, YunCai Liu, JingLong Tang, Peng Liu, DaPeng Yang, Li Zhang, Nan Ge, Zhezhen Jin, QiXiao Jiang, LianHua Cui
AIM: To evaluate intravenously injected bovine serum albumin-templated gold nanoparticles (BSA-GNPs) for radiosensitization effects on H22 hepatoma-bearing mice. MATERIALS & METHODS: BSA-GNPs in different size were injected intravenously with a dose of 4 mg Au/kg. After 30 min injection, the tumor-bearing mice were irradiated with 5 Gy x-ray. RESULTS: BSA-GNPs in 8, 50 and 187 nm were synthesized and have no obvious cytotoxicity to HeLa, HepG2 and HeCat cells when the concentration was up to 32 μM...
May 11, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29658365/resveratrol-delivery-by-ultrasound-mediated-nanobubbles-targeting-nucleus-pulposus-cells
#5
Jieliang Shen, Naiqiang Zhuo, Shenxi Xu, Zhaojun Song, Zhenming Hu, Jie Hao, Xiuming Guo
AIM: To improve nucleus pulposus cell-targeted therapy for intervertebral disc degeneration (IDD) by fabricating a novel kind of ultrasound (US)-mediated poly(lactic-co-glycolic acid) nanobubbles (NBs) as a means of targeted drug delivery. MATERIALS & METHODS: The resveratrol (RES)-embedded NBs were synthesized using a double-emulsion method. The active NP cell-targeting biomarker CDH2 antibody (AbCDH2) was further conjugated to the NBs using a carbodiimide method...
April 16, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29630448/sorafenib-loaded-polymeric-micelles-as-passive-targeting-therapeutic-agents-for-hepatocellular-carcinoma-therapy
#6
Yanhong Su, Kun Wang, Yong Li, Wenjing Song, Yongjie Xin, Wei Zhao, Jie Tian, Li Ren, Ligong Lu
AIM: The clinical application of sorafenib is limited because of its hydrophobicity, low bioavailability and unsatisfying treatment effect. Therefore, sorafenib-loaded PEG-poly (ε-caprolactone) micelles (SF micelles) were fabricated for sorafenib delivery. MATERIALS & METHODS: In vitro assays investigated the solubility, dispersity, stability, cytotoxicity and uptake capacity of SF micelles. In vivo biodistribution and therapeutic effects were studied using HepG2-Luc tumor-bearing mice...
April 9, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29629829/nanosized-carriers-based-on-amphiphilic-poly-n-vinyl-2-pyrrolidone-for-intranuclear-drug-delivery
#7
Anna L Luss, Pavel P Kulikov, Sven B Romme, Camilla L Andersen, Cristian P Pennisi, Anca O Docea, Andrey N Kuskov, Kelly Velonia, Yaroslav O Mezhuev, Mikhail I Shtilman, Aristidis M Tsatsakis, Leonid Gurevich
AIM: Ability to deliver drugs into the cell nuclei can significantly increase the efficacy of cancer therapies, in particular in the case of multidrug-resistant cancer Results: Polymer nanocarriers based on amphiphilic thiooctadecyl-terminated poly-N-vinyl-2-pyrrolidone were produced and loaded with a model hydrophobic drug, curcumin. Two commonly used loading approaches - emulsification and ultrasonic dispersion - were found to lead to two different size distributions with distinctively different biological effect...
April 9, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29565220/implication-of-nano-antioxidant-therapy-for-treatment-of-hepatocellular-carcinoma-using-plga-nanoparticles-of-rutin
#8
Preeti Pandey, Mahfoozur Rahman, Prakash Chandra Bhatt, Sarwar Beg, Basudev Paul, Abdul Hafeez, Fahad A Al-Abbasi, Muhammad Shahid Nadeem, Othman Baothman, Firoz Anwar, Vikas Kumar
AIM: The present work describes the development of poly(lactic co-glycolic acid) (PLGA) nanoparticles (NPs) of rutin (RT) for the treatment of hepatocellular carcinoma in rats. MATERIALS & METHODS: RT-loaded PLGA NPs (RT-PLGA-NPs) were prepared by double emulsion evaporation method. Further these are optimized by Box-Behnken design. PLGA NPs were evaluated for size, polydispersity index, drug-loading capacity, entrapment, gastric stability, in vitro drug release, in vivo preclinical studies and biochemical studies...
March 22, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29564966/recombinant-fibronectin-fragment-iii8-10-polylactic-acid-hybrid-nanofibers-enhance-the-bioactivity-of-titanium-surface
#9
Jordi Guillem-Marti, Gerard Boix-Lemonche, Dencho Gugutkov, Maria-Pau Ginebra, George Altankov, Jose M Manero
AIM: To develop a nanofiber (NF)-based biomimetic coating on titanium (Ti) that mimics the complex spatiotemporal organization of the extracellular matrix (ECM). MATERIALS & METHODS: Recombinant cell attachment site (CAS) of fibronectin type III8-10 domain was co-electrospun with polylactic acid (PLA) and covalently bound on polished Ti discs. Osteoblast-like SaOS-2 cells were used to evaluate their complex bioactivity. RESULTS: A significant increase of cell spreading was found on CAS/PLA hybrid NFs, followed by control pure PLA NFs and bare Ti discs...
March 22, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29564947/self-nanoemulsifying-drug-delivery-systems-improve-oral-absorption-and-antischistosomal-activity-of-epiisopiloturine
#10
Luiza Ianny de Lima, Karen Rapp Py-Daniel, Maria Adelaide Guimarães, Luís Alexandre Muehlmann, Ana Carolina Mafud, Yvonne Primerano Mascarenhas, Josué de Moraes, José Roberto de Souza de Almeida Leite, Cheng-Shi Jiang, Ricardo Bentes Azevedo, João Paulo Figueiró Longo
AIM: To develop a self-nanoemulsifying drug-delivery system (SNEDDS) able to improve oral absorption of epiisopiloturine (EPI), and test the antischistosomal activity in a mice model. RESULTS: SNEDDS had a nanoscopic size and was able to enhance EPI bioavailability after oral administration, and SNEDDS-EPI (40 mg.kg-1 ) improved the in vivo antischistosomal activity of EPI, demonstrating that SNEDDS was able to improve the pharmacokinetics of EPI, and to maintain the pharmacodynamic activity against Schistosoma mansoni in vivo...
March 22, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29546817/magnetic-iron-oxide-nanoparticles-as-drug-carriers-preparation-conjugation-and-delivery
#11
Kheireddine El-Boubbou
Magnetic nanoparticles (MNPs), particularly made of iron oxides, have been extensively studied as diagnostic imaging agents and therapeutic delivery vehicles. In this review, special emphasis is set on the 'recent advancements of drug-conjugated MNPs used for therapeutic applications'. The most prevalent preparation methods and chemical functionalization strategies required for translational biomedical nanoformulations are outlined. Particular attention is, then, devoted to the tailored conjugation of drugs to the MNP carrier according to either noncovalent or covalent attachments, with advantages and drawbacks of both pathways conferred...
March 16, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29542367/exosomes-derived-from-toxoplasma-gondii-stimulate-an-inflammatory-response-through-jnk-signaling-pathway
#12
Yawen Li, Fangming Xiu, Zezhong Mou, Zhiwei Xue, Huanhui Du, Chunxue Zhou, Yan Li, Yongyu Shi, Shenyi He, Huaiyu Zhou
AIM: Exosomes are nanoscale membranous vesicles secreted by most cell types able to transfer bioactive molecules among cells, which play crucial roles in intercellular communication. We characterized the exosomes derived from Toxoplasma gondii (T. gondii) and detected the immune response in macrophages. METHODS: We used transmission electron microscopy, nanotracking analysis and western blotting to identify T. gondii exosomes. Functional experiments were performed in RAW264...
March 15, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29536804/ultrasound-enhanced-delivery-of-doxorubicin-all-trans-retinoic-acid-loaded-nanodiamonds-into-tumors
#13
Huanan Li, Deping Zeng, Zhenyu Wang, Liaoqiong Fang, Faqi Li, Zhibiao Wang
AIM: To build up a combined therapy strategy to address limitations of the enhanced permeability and retention (EPR) effect and improve the efficiency of tumor therapy. MATERIALS & METHODS: A pH-sensitive nanocomplex for co-delivery of doxorubicin (DOX) and all-trans retinoic acid (ATRA) was developed based on nanodiamonds (DOX/ATRA-NDs) to enhance intracellular retention of drugs. Meanwhile, ultrasound was employed to enhance tumor vascular penetration of DOX-ATRA-NDs...
March 14, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29528278/cationic-bilayered-nanoemulsion-of-fusidic-acid-an-investigation-on-eradication-of-methicillin-resistant-staphylococcus-aureus-33591-infection-in-burn-wound
#14
Kanika Thakur, Gajanand Sharma, Bhupinder Singh, Ashay Jain, Rajeev Tyagi, Sanjay Chhibber, Om P Katare
AIM: The aim of the current study was to investigate the therapeutic efficacy of cationic-charged bilayered nanoemulsion for topical delivery of fusidic acid in eradicating methicillin-resistant Staphylococcus aureus (MRSA) bacterial burn wound infection. MATERIALS & METHODS: The developed carriers were characterized for particle size, antibacterial activity, cell viability assay in HaCat cell lines, rheological profile, ex vivo and in vivo studies, namely, full thickness MRSA 33591 murine burn wound infection via topical route...
March 12, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29527969/doxorubicin-and-paclitaxel-carried-by-methoxy-poly-ethylene-glycol-poly-lactide-co-glycolide-is-superior-than-traditional-drug-delivery-methods
#15
Yili Hu, Xiaoyang Zhu, Ruifang Zhao, Jin Wang, Yipeng Song, Guangjun Nie, Huiru Tang, Yulan Wang
AIM: To evaluate the advantages of nanomaterial methoxy poly(ethylene glycol)-poly(lactide-co-glycolide) (mPEG-PLGA) encapsulated doxorubicin (D/DOX) and paclitaxel (T/TAX; mPEG-PLGA-DT) over free form of DOX and TAX (DOX/TAX). MATERIALS & METHODS: Metabonomics was conducted to characterize the systemic metabolic response of allograft breast cancer model mice to mPEG-PLGA-DT and DOX/TAX treatments. RESULTS: Breast tumor growth induced metabolic reprogram in serum and multiple organs...
March 12, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29485327/precision-nanomedicines-for-prostate-cancer
#16
Anna Cifuentes-Rius, Lisa M Butler, Nicolas H Voelcker
No abstract text is available yet for this article.
February 27, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29485321/the-dichotomous-nature-of-dose-enhancement-by-gold-nanoparticle-aggregates-in-radiotherapy
#17
Sherif M Gadoue, Piotr Zygmanski, Erno Sajo
AIM: In nanoparticle-aided radiotherapy, the computational paradigm has been that inside the cell, nanoparticles are distributed sparsely and solitarily. However, experiments reveal significant cluster formation, which affects radiosensitization and must be considered in clinical treatment planning. We characterize the impact of gold nanoparticle agglomeration on the predicted radiation dose enhancement as function of size, geometry, morphology and incident beam energy. MATERIALS & METHODS: Next-generation coupled electron-photon deterministic computations were performed using subnanometric unstructured spatial mesh...
February 27, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29790811/nanoscaffolds-in-promoting-regeneration-of-the-peripheral-nervous-system
#18
Chen Aijie, Lai Xuan, Liang Huimin, Zhang Yanli, Kang Yiyuan, Lin Yuqing, Shao Longquan
The ability to surgically repair peripheral nerve injuries is urgently needed. However, traditional tissue engineering techniques, such as autologous nerve transplantation, have some limitations. Therefore, tissue engineered autologous nerve grafts have become a suitable choice for nerve repair. Novel tissue engineering techniques derived from nanostructured conduits have been shown to be superior to other successful functional neurological structures with different scaffolds in terms of providing the required structures and properties...
May 2018: Nanomedicine
https://www.readbyqxmd.com/read/29790803/ultrasound-guided-delivery-of-thymidine-kinase-nitroreductase-dual-therapeutic-genes-by-pegylated-plga-pie-nanoparticles-for-enhanced-triple-negative-breast-cancer-therapy
#19
Rammohan Devulapally, Taehwa Lee, Aarohi Barghava-Shah, Thillai V Sekar, Kira Foygel, Sunitha V Bachawal, Jürgen K Willmann, Ramasamy Paulmurugan
AIM: Triple-negative breast cancer (TNBC) is an aggressive breast cancer subtype. Since no targeted therapy is available, gene-directed enzyme prodrug therapy (GDEPT) could be an attractive strategy for treating TNBC. MATERIALS & METHODS:  Polyethylene glycol (PEG)ylated-poly(lactic-co-glycolic acid)/polyethyleneimine nanoparticles (PLGA/PEI NPs) were synthesized and complexed with TK-NTR fusion gene. Ultrasound (US) and microbubble (MB) mediated sonoporation was used for efficient delivery of the TK-NTR-DNA-NP complex to TNBC tumor in vivo for cancer therapy...
May 2018: Nanomedicine
https://www.readbyqxmd.com/read/29790418/enhanced-brain-penetration-of-pretomanid-by-intranasal-administration-of-an-oil-in-water-nanoemulsion
#20
Adeola Shobo, Annapurna Pamreddy, Hendrik G Kruger, Maya M Makatini, Tricia Naicker, Thavendran Govender, Sooraj Baijnath
AIM: To enhance the drug delivery to the brain with an oil-in-water nanoemulsion of pretomanid via intranasal (IN) administration. MATERIALS & METHODS: The study involved 70 male Sprague-Dawley rats (160-180 g) that received either 20 mg/kg body weight (b.w.) a nanoemulsion or a 20 mg/kg b.w. of pretomanid in solution via the IN route. The drug was quantified by liquid chromatography-tandem mass spectrometry to investigate whole tissue-drug concentrations, and mass spectrometric imaging to visualize drug localization in the brain...
May 2018: Nanomedicine
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