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International Journal of Nanomedicine

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https://www.readbyqxmd.com/read/28053532/biomedical-photoacoustics-fundamentals-instrumentation-and-perspectives-on-nanomedicine
#1
Chunpeng Zou, Beibei Wu, Yanyan Dong, Zhangwei Song, Yaping Zhao, Xianwei Ni, Yan Yang, Zhe Liu
Photoacoustic imaging (PAI) is an integrated biomedical imaging modality which combines the advantages of acoustic deep penetration and optical high sensitivity. It can provide functional and structural images with satisfactory resolution and contrast which could provide abundant pathological information for disease-oriented diagnosis. Therefore, it has found vast applications so far and become a powerful tool of precision nanomedicine. However, the investigation of PAI-based imaging nanomaterials is still in its infancy...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28053531/enhanced-photocytotoxicity-of-curcumin-delivered-by-solid-lipid-nanoparticles
#2
Shan Jiang, Rongrong Zhu, Xiaolie He, Jiao Wang, Mei Wang, Yechang Qian, Shilong Wang
Curcumin (Cur) is a promising photosensitizer that could be used in photodynamic therapy. However, its poor solubility and hydrolytic instability limit its clinical use. The aim of the present study was to encapsulate Cur into solid lipid nanoparticles (SLNs) in order to improve its therapeutic activity. The Cur-loaded SLNs (Cur-SLNs) were prepared using an emulsification and low-temperature solidification method. The functions of Cur and Cur-SLNs were studied on the non-small cell lung cancer A549 cells for photodynamic therapy...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28053530/recent-advances-on-smart-tio2-nanotube-platforms-for-sustainable-drug-delivery-applications
#3
REVIEW
Qun Wang, Jian-Ying Huang, Hua-Qiong Li, Allan Zi-Jian Zhao, Yi Wang, Ke-Qin Zhang, Hong-Tao Sun, Yue-Kun Lai
To address the limitations of traditional drug delivery, TiO2 nanotubes (TNTs) are recognized as a promising material for localized drug delivery systems. With regard to the excellent biocompatibility and physicochemical properties, TNTs prepared by a facile electrochemical anodizing process have been used to fabricate new drug-releasing implants for localized drug delivery. This review discusses the development of TNTs applied in localized drug delivery systems, focusing on several approaches to control drug release, including the regulation of the dimensions of TNTs, modification of internal chemical characteristics, adjusting pore openings by biopolymer coatings, and employing polymeric micelles as drug nanocarriers...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28053529/co-self-assembly-of-cationic-microparticles-to-deliver-pegfp-znf580-for-promoting-the-transfection-and-migration-of-endothelial-cells
#4
Yakai Feng, Mengyang Guo, Wen Liu, Xuefang Hao, Wei Lu, Xiangkui Ren, Changcan Shi, Wencheng Zhang
The gene transfection efficiency of polyethylenimine (PEI) varies with its molecular weight. Usually, high molecular weight of PEI means high gene transfection, as well as high cytotoxicity in gene delivery in vivo. In order to enhance the transfection efficiency and reduce the cytotoxicity of PEI-based gene carriers, a novel cationic gene carrier was developed by co-self-assembly of cationic copolymers. First, a star-shaped copolymer poly(3(S)-methyl-morpholine-2,5-dione-co-lactide) (P(MMD-co-LA)) was synthesized using D-sorbitol as an initiator, and the cationic copolymer (P(MMD-co-LA)-g-PEI) was obtained after grafting low-molecular weight PEI...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28053528/bottom-up-fabrication-of-zwitterionic-polymer-brushes-on-intraocular-lens-for-improved-biocompatibility
#5
Yuemei Han, Xu Xu, Junmei Tang, Chenghui Shen, Quankui Lin, Hao Chen
Intraocular lens (IOL) is an efficient implantable device commonly used for treating cataracts. However, bioadhesion of bacteria or residual lens epithelial cells on the IOL surface after surgery causes postoperative complications, such as endophthalmitis or posterior capsular opacification, and leads to loss of sight again. In the present study, zwitterionic polymer brushes were fabricated on the IOL surface via bottom-up grafting procedure. The attenuated total reflection-Fourier transform infrared and contact angle measurements indicated successful surface modification, as well as excellent hydrophilicity...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28053527/fabrication-of-nonfouling-bactericidal-and-bacteria-corpse-release-multifunctional-surface-through-surface-initiated-raft-polymerization
#6
Bailiang Wang, Zi Ye, Yihong Tang, Yuemei Han, Quankui Lin, Huihua Liu, Hao Chen, Kaihui Nan
Infections after surgery or endophthalmitis are potentially blinding complications caused by bacterial adhesion and subsequent biofilm formation on the intraocular lens. Neither single-function anti-adhesion surface nor contacting killing surface can exhibit ideal antibacterial function. In this work, a novel (2-(dimethylamino)-ethyl methacrylate-co-2-methacryloyloxyethyl phosphorylcholine) (p (DMAEMA-co-MPC)) brush was synthesized by "grafting from" method through reversible-addition fragmentation chain transfer polymerization...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28053526/mesoporous-silica-nanoparticles-for-stimuli-responsive-controlled-drug-delivery-advances-challenges-and-outlook
#7
REVIEW
Yuanhui Song, Yihong Li, Qien Xu, Zhe Liu
With the development of nanotechnology, the application of nanomaterials in the field of drug delivery has attracted much attention in the past decades. Mesoporous silica nanoparticles as promising drug nanocarriers have become a new area of interest in recent years due to their unique properties and capabilities to efficiently entrap cargo molecules. This review describes the latest advances on the application of mesoporous silica nanoparticles in drug delivery. In particular, we focus on the stimuli-responsive controlled release systems that are able to respond to intracellular environmental changes, such as pH, ATP, GSH, enzyme, glucose, and H2O2...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28053525/self-assembled-peptide-nanomaterials-for-biomedical-applications-promises-and-pitfalls
#8
REVIEW
Linlin Sun, Chunli Zheng, Thomas J Webster
Over the last several decades, a great number of advances have been made in the area of self-assembled supramolecules for regenerative medicine. Such advances have involved the design, preparation, and characterization of brand new self-assembled peptide nanomaterials for a variety of applications. Among all biomolecules considered for self-assembly applications, peptides have attracted a great deal of attention as building blocks for bottom-up fabrication, due to their versatility, ease of manufacturing, low costs, tunable structures, and versatile properties...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28053524/dynamic-imaging-of-allogeneic-adipose-derived-regenerative-cells-transplanted-in-ischemic-hind-limb-of-apolipoprotein-e-mouse-model
#9
Yi Zheng, Jinbao Qin, Xin Wang, Zhiyou Peng, Peiyong Hou, Xinwu Lu
BACKGROUND: Transplantation of allogeneic adipose-derived regenerative cells (ADRCs) is a promising treatment modality for severe ischemic diseases. However, minimal information is available on the in vivo effects, fate, and migration of ADRCs, as well as the mechanisms of their therapeutic angiogenesis. MATERIALS AND METHODS: In this study, green fluorescent protein-expressing ADRCs (GFP-ADRCs) were obtained, labeled with acetylated 3-aminopropyltrimethoxysilane (APTS)-coated iron oxide nanoparticles (APTS NPs), and injected into an old apolipoprotein E knockout (ApoE-KO) mouse model with hind limb ischemia...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28053523/anti-muc1-nano-aptamers-for-triple-negative-breast-cancer-imaging-by-single-photon-emission-computed-tomography-in-inducted-animals-initial-considerations
#10
Fagner Santos do Carmo, Eduardo Ricci-Junior, Cristal Cerqueira-Coutinho, Marta de Souza Albernaz, Emerson Soares Bernardes, Sotiris Missailidis, Ralph Santos-Oliveira
The early and specific detection of tumors remains a barrier in oncology, especially in cases such as the triple-negative breast cancer (TNBC). To address this gap, aptamers have found an important application in the recognition of tumor biomarkers such as mucin 1 (MUC1). However, there are still some difficulties in the use of aptamer, as their rapid biological clearance makes their use as drugs limited. In this study, the anti-MUC1 aptamer was used as a drug delivery system (DDS) for a radioactive polymeric nanoparticle (NP) in the imaging of TNBCs...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28053522/do-nanoparticles-provide-a-new-opportunity-for-diagnosis-of-distal-airspace-disease
#11
Jakob Löndahl, Jonas Kf Jakobsson, David M Broday, H Laura Aaltonen, Per Wollmer
There is a need for efficient techniques to assess abnormalities in the peripheral regions of the lungs, for example, for diagnosis of pulmonary emphysema. Considerable scientific efforts have been directed toward measuring lung morphology by studying recovery of inhaled micron-sized aerosol particles (0.4-1.5 µm). In contrast, it is suggested that the recovery of inhaled airborne nanoparticles may be more useful for diagnosis. The objective of this work is to provide a theoretical background for the use of nanoparticles in measuring lung morphology and to assess their applicability based on a review of the literature...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28031711/synergistic-anti-glioma-effect-of-a-coloaded-nano-drug-delivery-system
#12
Huae Xu, Feng Jia, Pankaj Kumar Singh, Shu Ruan, Hao Zhang, Xiaolin Li
The anti-glioma effect of temozolomide (Tem) is sometimes undermined by the emerging resistance. Recently, resveratrol (Res), herbal medicine extracted from grape seeds, has been demonstrated for its potential use in chemosensitization. In the current study, both these drugs were loaded simultaneously into nanoparticles with methoxy poly(ethylene glycol)-poly epsilon caprolactone (mPEG-PCL) as drug carriers in order to achieve better antitumor efficiency. Tem/Res-coloaded mPEG-PCL nanoparticles were constructed, characterized, and tested for antitumor effect on glioma cells by using in vitro and xenograft model system...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28031710/a-quality-by-design-approach-on-polymeric-nanocarrier-delivery-of-gefitinib-formulation-in-vitro-and-in-vivo-characterization
#13
Navya Sree Kola Srinivas, Ruchi Verma, Girish Pai Kulyadi, Lalit Kumar
Gefitinib is an anticancer agent which acts by inhibiting epidermal growth factor receptor tyrosine kinase receptors. The aim of the present study was to prepare gefitinib nanosuspension. Gefitinib was encapsulated in Eudragit(®) RL100 and then dispersed in stabilizer solution, polyvinyl alcohol, and polyvinylpyrrolidone K30. Nanosuspension was prepared by using homogenization and ultrasonication techniques. The quality by design approach was also used in the study to understand the effect of critical material attributes (CMAs) and critical processing parameters (CPPs) on critical quality attributes and to improve the quality and safety of formulation...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28031709/magnetic-and-fluorescent-gd2o3-yb-3-ln-3-nanoparticles-for-simultaneous-upconversion-luminescence-mr-dual-modal-imaging-and-nir-induced-photodynamic-therapy
#14
Jun Liu, Long Huang, Xiumei Tian, Xiaoming Chen, Yuanzhi Shao, Fukang Xie, Dihu Chen, Li Li
The development of upconversion nanoparticles (UCNs) for theranostics application is a new strategy toward the accurate diagnosis and efficient treatment of cancer. Here, magnetic and fluorescent lanthanide-doped gadolinium oxide (Gd2O3) UCNs with bright upconversion luminescence (UCL) and high longitudinal relaxivity (r1) are used for simultaneous magnetic resonance imaging (MRI)/UCL dual-modal imaging and photodynamic therapy (PDT). In vitro and in vivo MRI studies show that these products can serve as good MRI contrast agents...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28008255/rescuing-cholinergic-neurons-from-apoptotic-degeneration-by-targeting-of-serotonin-modulator-and-apolipoprotein-e-conjugated-liposomes-to-the-hippocampus
#15
Yung-Chih Kuo, Yin-Jung Lee
β-Amyloid (Aβ)-targeting liposomes (LIP) with surface serotonin modulator (SM) and apolipoprotein E (ApoE) were utilized to facilitate the delivery of nerve growth factor (NGF) across the blood-brain barrier (BBB) for neuroprotection in the hippocampus. The therapeutic efficacy of SM- and ApoE-grafted LIP carrying NGF (NGF-SM-ApoE-LIP) was assessed by an in vitro Alzheimer's disease (AD) model of degenerated SK-N-MC cells and an in vivo AD model of Aβ-insulted Wistar rats. The experimental evidences revealed that the modified SM and ApoE on the surface of LIP increased the permeation of NGF across the BBB without serious damage to structural integrity of tight junction...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28008254/rehmannia-glutinosa-polysaccharide-liposome-as-a-novel-strategy-for-stimulating-an-efficient-immune-response-and-their-effects-on-dendritic-cells
#16
Yee Huang, Tao Qin, Yifan Huang, Zhenguang Liu, Ruonan Bo, Yuanliang Hu, Jiaguo Liu, Yi Wu, Deyun Wang
Nanomedicine, the medical application of nanotechnology, promises a seemingly limitless range of applications from drug delivery to adjuvants and therapeutics. Our current research is focused on natural polymer-based liposome adjuvants. With the aim of inducing protective and long-lasting immunity, the immunological adjuvant activity of Rehmannia glutinosa polysaccharide liposome (RGPL) was investigated. In vivo, the splenic lymphocyte proliferation ratios and ovalbumin-specific immunoglobulin G titers of ovalbumin-RGPL-vaccinated mice were significantly upregulated...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28008253/novel-antimicrobial-peptide-modified-azithromycin-loaded-liposomes-against-methicillin-resistant-staphylococcus-aureus
#17
Xiaowei Liu, Zhan Li, Xiaodong Wang, Yujuan Chen, Fengbo Wu, Ke Men, Ting Xu, Yan Luo, Li Yang
Infections caused by multidrug-resistant bacteria, such as methicillin-resistant Staphylococcus aureus (MRSA), have become a public threat; therefore, development of new antimicrobial drugs or strategies is urgently required. In this study, a new antibacterial peptide DP7-C (Chol-suc-VQWRIRVAVIRK-NH2) and DP7-C-modified azithromycin (AZT)-loaded liposomes (LPs) are developed for the treatment of MRSA infection, and it was found that DP7-C inserted into the LP lipid bilayer not only functioned as a carrier to encapsulate the antibiotic AZT but also synergized the antibacterial effect of the encapsulated AZT...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28008252/nanoscaled-hydrated-antimony-v-oxide-as-a-new-approach-to-first-line-antileishmanial-drugs
#18
Antonia Mr Franco, Iryna Grafova, Fabiane V Soares, Gennaro Gentile, Claudia Dc Wyrepkowski, Marcos A Bolson, Ézio Sargentini, Cosimo Carfagna, Markku Leskelä, Andriy Grafov
BACKGROUND: Coordination compounds of pentavalent antimony have been, and remain, the first-line drugs in leishmaniasis treatment for >70 years. Molecular forms of Sb (V) complexes are commercialized as sodium stibogluconate (Pentostam(®)) and meglumine antimoniate (MA) (Glucantime(®)). Ever-increasing drug resistance in the parasites limits the use of antimonials, due to the low drug concentrations being administered against high parasitic counts. Sb(5+) toxicity provokes severe side effects during treatment...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28008251/coating-with-spermine-pullulan-polymer-enhances-adenoviral-transduction-of-mesenchymal-stem-cells
#19
Li Wan, Xinglei Yao, Francesco Faiola, Bojun Liu, Tianyuan Zhang, Yasuhiko Tabata, Hiroyuki Mizuguchi, Shinsaku Nakagawa, Jian-Qing Gao, Robert Chunhua Zhao
Mesenchymal stem cells (MSCs) are adult stem cells with multilineage potential, which makes them attractive tools for regenerative medicine applications. Efficient gene transfer into MSCs is essential not only for basic research in developmental biology but also for therapeutic applications involving gene-modification in regenerative medicine. Adenovirus vectors (Advs) can efficiently and transiently introduce an exogenous gene into many cell types via their primary receptors, the coxsackievirus and adenovirus receptors, but not into MSCs, which are deficient in coxsackievirus and adenovirus receptors expression...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28008250/a-polyethylenimine-modified-carboxyl-poly-styrene-acrylamide-copolymer-nanosphere-for-co-delivering-of-cpg-and-tgf-%C3%AE-receptor-i-inhibitor-with-remarkable-additive-tumor-regression-effect-against-liver-cancer-in-mice
#20
Shuyan Liang, Jun Hu, Yuanyuan Xie, Qing Zhou, Yanhong Zhu, Xiangliang Yang
Cancer immunotherapy based on nanodelivery systems has shown potential for treatment of various malignancies, owing to the benefits of tumor targeting of nanoparticles. However, induction of a potent T-cell immune response against tumors still remains a challenge. In this study, polyethylenimine-modified carboxyl-styrene/acrylamide (PS) copolymer nano-spheres were developed as a delivery system of unmethylated cytosine-phosphate-guanine (CpG) oligodeoxynucleotides and transforming growth factor-beta (TGF-β) receptor I inhibitors for cancer immunotherapy...
2016: International Journal of Nanomedicine
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