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International Journal of Nanomedicine

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https://www.readbyqxmd.com/read/28721045/synthesis-construction-and-evaluation-of-self-assembled-nano-bacitracin-a-as-an-efficient-antibacterial-agent-in-vitro-and-in-vivo
#1
Wei Hong, Xiang Gao, Peng Qiu, Jie Yang, Mingxi Qiao, Hong Shi, Dexian Zhang, Chunlian Tian, Shengli Niu, Mingchun Liu
Bacitracin A (BA) is an excellent polypeptide antibiotic that is active against gram-positive bacteria without triggering multidrug resistance. However, BA is inactive against gram-negative bacteria because of its inability to cross the outer membrane of these cells, and it has strong nephrotoxicity, thus limiting its clinical applications. Nanoantibiotics can effectively localize antibiotics to the periplasmic space of bacteria while decreasing the adverse effects of antibiotics. In this study, biodegradable hydrophobic copolymers of poly (d,l-lactide-co-glycolide) (PLGA) were attached to the N-termini of BA to design a novel class of self-assembled nano-bacitracin A (nano-BAs), and their potential as antibacterial agents was evaluated in vitro and in vivo...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28721044/stimulated-phase-shift-acoustic-nanodroplets-enhance-vancomycin-efficacy-against-methicillin-resistant-staphylococcus-aureus-biofilms
#2
Hao Guo, Ziming Wang, Quanyin Du, Pan Li, Zhigang Wang, Aimin Wang
PURPOSE: Bacterial biofilms on the surface of prostheses are becoming a rising concern in managing prosthetic joint infections. The inherent resistant features of biofilms render traditional antimicrobial therapy unproductive and revision surgery outcomes uncertain. This situation has prompted the exploration of novel antimicrobial strategies. The synergy of ultrasound microbubbles and vancomycin has been proposed as an efficient alternative for biofilm eradication. The purpose of this study was to evaluate the anti-biofilm effect of stimulated phase-shift acoustic nanodroplets (NDs) combined with vancomycin...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28721043/preparation-of-exenatide-loaded-linear-poly-ethylene-glycol-brush-poly-l-lysine-block-copolymer-potential-implications-on-diabetic-nephropathy
#3
Fei Tong
The poly(ethylene glycol)-b-brush poly(l-lysine) polymer (PEG-b-(PELG50-g-PLL3)) was synthesized and evaluated as a nanocarrier for prolonging delivery of exenatide through the abdominal subcutaneous injection route. The isoelectric point of exenatide was 4.86, and exenatide could combine with PEG-b-(PELG50-g-PLL3) polymers via electrostatic interactions at pH 7.4. This polymer was a good candidate for achieving prolonged drug delivery for exenatide, considering its high molecular weight. Besides the physicochemical characterization of the polymer, in vitro and in vivo applications were researched as a sustained exenatide delivery system...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28721042/erratum-preparation-of-bufalin-loaded-pluronic-polyetherimide-nanoparticles-cellular-uptake-distribution-and-effect-on-colorectal-cancer-corrigendum
#4
(no author information available yet)
[This corrects the article on p. 4035 in vol. 9, PMID: 25187707.].
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28721041/high-intensity-focused-ultrasound-triggered-nanoscale-bubble-generating-liposomes-for-efficient-and-safe-tumor-ablation-under-photoacoustic-imaging-monitoring
#5
Gang Feng, Lan Hao, Chunyan Xu, Haitao Ran, Yuanyi Zheng, Pan Li, Yang Cao, Qi Wang, Jizhu Xia, Zhigang Wang
High-intensity focused ultrasound (HIFU) is widely applied to tumors in clinical practice due to its minimally invasive approach. However, several issues lower therapeutic efficiency in some cases. Many synergists such as microbubbles and perfluorocarbon nanoparticles have recently been used to improve HIFU treatment efficiency, but none were determined to be effective and safe in vivo. In this study, nanoscale bubble-generating liposomes (liposomes containing ammonium bicarbonate [Lip-ABC]) were prepared by film hydration followed by sequential extrusion...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28721040/effect-of-ultraviolet-treatment-on-bacterial-attachment-and-osteogenic-activity-to-alkali-treated-titanium-with-nanonetwork-structures
#6
Honghao Zhang, Satoshi Komasa, Chiho Mashimo, Tohru Sekino, Joji Okazaki
PURPOSE: Alkali-treated titanium with nanonetwork structures (TNS) possesses good osteogenic activity; however, the resistance of this material to bacterial contamination remains inadequate. As such, TNS implants are prone to postoperative infection. In this work, we attempted to alter the biological properties of TNS by treatment with short-duration high-intensity ultraviolet (UV) irradiation. METHODS: TNS discs were treated with UV light (wavelength =254 nm, strength =100 mW/cm(2)) for 15 minutes using a UV-irradiation machine...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28721039/top-down-nanofabrication-of-silicon-nanoribbon-field-effect-transistor-si-nr-fet-for-carcinoembryonic-antigen-detection
#7
Zengtao Bao, Jialin Sun, Xiaoqian Zhao, Zengyao Li, Songkui Cui, Qingyang Meng, Ye Zhang, Tong Wang, Yanfeng Jiang
Sensitive and quantitative detection of tumor markers is highly required in the clinic for cancer diagnosis and consequent treatment. A field-effect transistor-based (FET-based) nanobiosensor emerges with characteristics of being label-free, real-time, having high sensitivity, and providing direct electrical readout for detection of biomarkers. In this paper, a top-down approach is proposed and implemented to fulfill a novel silicon nano-ribbon FET, which acts as biomarker sensor for future clinical application...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28721038/toxicity-based-toxicokinetic-toxicodynamic-assessment-of-bioaccumulation-and-nanotoxicity-of-zerovalent-iron-nanoparticles-in-caenorhabditis-elegans
#8
Ying-Fei Yang, Yi-Jun Lin, Chung-Min Liao
Elucidating the relationships between the toxicity-based-toxicokinetic (TBTK)/toxicodynamic (TD) properties of engineered nanomaterials and their nanotoxicity is crucial for human health-risk analysis. Zerovalent iron (Fe(0)) nanoparticles (NPs) are one of the most prominent NPs applied in remediating contaminated soils and groundwater. However, there are concerns that Fe(0)NP application contributes to long-term environmental and human health impacts. The nematode Caenorhabditis elegans is a surrogate in vivo model that has been successfully applied to assess the potential nanotoxicity of these nanomaterials...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28721037/future-trends-and-emerging-issues-for-nanodelivery-systems-in-oral-and-oropharyngeal-cancer
#9
REVIEW
Alexandra Iulia Irimie, Laura Sonea, Ancuta Jurj, Nikolay Mehterov, Alina Andreea Zimta, Liviuta Budisan, Cornelia Braicu, Ioana Berindan-Neagoe
Oral cancer is a prevalent cancer type on a global scale, whose traditional treatment strategies have several drawbacks that could in the near future be overcome through the development of novel therapeutic and prognostic strategies. Nanotechnology provides an alternative to traditional therapy that leads to enhanced efficiency and less toxicity. Various nanosystems have been developed for the treatment of oral cancer, including polymeric, metallic, and lipid-based formulations that incorporate chemotherapeutics, natural compounds, siRNA, or other molecules...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28694699/antitumor-hpv-e7-specific-ctl-activity-elicited-by-in-vivo-engineered-exosomes-produced-through-dna-inoculation
#10
Paola Di Bonito, Chiara Chiozzini, Claudia Arenaccio, Simona Anticoli, Francesco Manfredi, Eleonora Olivetta, Flavia Ferrantelli, Emiliana Falcone, Anna Ruggieri, Maurizio Federico
We recently proved that exosomes engineered in vitro to deliver high amounts of HPV E7 upon fusion with the Nef(mut) exosome-anchoring protein elicit an efficient anti-E7 cytotoxic T lymphocyte immune response. However, in view of a potential clinic application of this finding, our exosome-based immunization strategy was faced with possible technical difficulties including industrial manufacturing, cost of production, and storage. To overcome these hurdles, we designed an as yet unproven exosome-based immunization strategy relying on delivery by intramuscular inoculation of a DNA vector expressing Nef(mut) fused with HPV E7...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28684914/regulation-of-apoptosis-through-bcl-2-bax-proteins-expression-and-dna-damage-by-nano-sized-gadolinium-oxide
#11
Saud Alarifi, Huma Ali, Saad Alkahtani, Mohammed S Alessia
Gadolinium oxide (Gd2O3) nanoparticles (GNPs) are applied in industrial products, for example, additives, optical glass, and catalysis. There are various suggestions of metal nanoparticles paradigm but the underlying basic mechanism about the toxicity of metal nanoparticles, for example GNPs, remains unclear. This experiment was done to measure the effective toxicity of GNPs (10, 25, 50, and 100 µg/mL) over 24 and 48 h and to evaluate toxicity mechanism in human neuronal (SH-SY5Y) cells. GNPs produced reactive oxygen species (ROS), as evaluated by 2', 7'-dichlorodihydrofluorescein diacetate...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28684913/preparation-and-antioxidant-properties-of-selenium-nanoparticles-loaded-chitosan-microspheres
#12
Kaikai Bai, Bihong Hong, Jianlin He, Zhuan Hong, Ran Tan
Selenium nanoparticles (SeNPs), as a special form of selenium (Se) supplement, have attracted worldwide attention due to their favorable properties and unique bioactivities. Herein, an eco-friendly and economic way to prepare stable SeNPs is introduced. SeNPs were synthesized in aqueous chitosan (CTS) and then embedded into CTS microspheres by spray-drying, forming selenium nanoparticles-loaded chitosan microspheres (SeNPs-M). The physicochemical properties including morphology, elemental state, size distribution and surface potential were investigated...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28684912/the-effects-of-grafted-mesenchymal-stem-cells-labeled-with-iron-oxide-or-cobalt-zinc-iron-nanoparticles-on-the-biological-macromolecules-of-rat-brain-tissue-extracts
#13
Bozena Novotna, Vit Herynek, Pavel Rossner, Karolina Turnovcova, Pavla Jendelova
INTRODUCTION: Rat mesenchymal stem cells (rMSCs) labeled with 1) poly-l-lysine-coated superparamagnetic iron oxide nanoparticles or 2) silica-coated cobalt-zinc-iron nanoparticles were implanted into the left brain hemisphere of rats, to assess their effects on the levels of oxidative damage to biological macromolecules in brain tissue. METHODS: Controls were implanted with unlabeled rMSCs. Animals were sacrificed 24 hours or 4 weeks after the treatment, and the implantation site along with the surrounding tissue was isolated from the brain...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28684911/photothermal-therapy-of-melanoma-tumor-using-multiwalled-carbon-nanotubes
#14
Zahra Sobhani, Mohammad Ali Behnam, Farzin Emami, Amirreza Dehghanian, Iman Jamhiri
Photothermal therapy (PTT) is a therapeutic method in which photon energy is transformed into heat rapidly via different operations to extirpate cancer. Nanoparticles, such as carbon nanotubes (CNTs) have exceptional optical absorbance in visible and near infrared spectra. Therefore, they could be a good converter to induce hyperthermia in PTT technique. In our study, for improving the dispersibility of multiwalled CNTs in water, the CNTs were oxidized (O-CNTs) and then polyethylene glycol (PEG) was used for wrapping the surface of nanotubes...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28684910/editor-s-choice-recent-research-highlights-from-the-international-journal-of-nanomedicine
#15
EDITORIAL
Farooq A Shiekh, Abdul-Rahman M Abu-Izzah, Vivian J Lee, Syed Mudassar
No abstract text is available yet for this article.
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28684909/nanoparticle-allergen-complexes-for-allergen-immunotherapy
#16
REVIEW
Gabriella Di Felice, Paolo Colombo
Allergen-specific immunotherapy was introduced in clinical settings more than 100 years ago. It remains the only curative approach to treating allergic disorders that ameliorates symptoms, reduces medication costs, and blocks the onset of new sensitizations. Despite this clinical evidence and knowledge of some immunological mechanisms, there remain some open questions regarding the safety and efficacy of this treatment. This suggests the need for novel therapeutic approaches that attempt to reduce the dose and frequency of treatment administration, improving patient compliance, and reducing costs...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28684908/%C3%AE-bisabolol-loaded-lipid-core-nanocapsules-reduce-lipopolysaccharide-induced-pulmonary-inflammation-in-mice
#17
Ana Paula L D'Almeida, Maria T Pacheco de Oliveira, Éverton T de Souza, Diego de Sá Coutinho, Bianca T Ciambarella, Cristiano R Gomes, Thatiana Terroso, Sílvia S Guterres, Adriana R Pohlmann, Patrícia Mr Silva, Marco A Martins, Andressa Bernardi
Acute respiratory distress syndrome (ARDS) is a severe clinical condition of respiratory failure due to an intense inflammatory response with different etiologies. Despite all efforts, therapy remains limited, and ARDS is still associated with high mortality and morbidity. Plants can provide a vast source of active natural products for the discovery of new drugs. α-bisabolol (α-bis), a constituent of the essential oil from chamomile, has elicited pharmacological interest. However, the molecule has some limitations to its biological application...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28670120/near-infrared-light-triggered-theranostics-for-tumor-specific-enhanced-multimodal-imaging-and-photothermal-therapy
#18
Bo Wu, Bing Wan, Shu-Ting Lu, Kai Deng, Xiao-Qi Li, Bao-Lin Wu, Yu-Shuang Li, Ru-Fang Liao, Shi-Wen Huang, Hai-Bo Xu
The major challenge in current clinic contrast agents (CAs) and chemotherapy is the poor tumor selectivity and response. Based on the self-quench property of IR820 at high concentrations, and different contrast effect ability of Gd-DOTA between inner and outer of liposome, we developed "bomb-like" light-triggered CAs (LTCAs) for enhanced CT/MRI/FI multimodal imaging, which can improve the signal-to-noise ratio of tumor tissue specifically. IR820, Iohexol and Gd-chelates were firstly encapsulated into the thermal-sensitive nanocarrier with a high concentration...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28670119/improved-lfias-for-highly-sensitive-detection-of-bnp-at-point-of-care
#19
Yan Gong, Jie Hu, Jane Ru Choi, Minli You, Yamin Zheng, Bo Xu, Ting Wen, Feng Xu
Heart failure (HF) has become a major cause of morbidity and mortality with a significant global economic burden. Although well-established clinical tests could provide early diagnosis, access to these tests is limited in developing countries, where a relatively higher incidence of HF is present. This has prompted an urgent need for developing a cost-effective, rapid and robust diagnostic tool for point-of-care (POC) detection of HF. Lateral flow immunoassay (LFIA) has found widespread applications in POC diagnostics...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28670118/species-specific-identification-of-collagen-components-in-colla-corii-asini-using-a-nano-liquid-chromatography-tandem-mass-spectrometry-proteomics-approach
#20
Xue Li, Feng Shi, Liping Gong, Baojian Hang, Daoyuan Li, Lianli Chi
Colla corii asini (CCA) is a protein-based traditional Chinese medicine made from donkey skins. Because it has the ability to nourish blood, its demand is increasing rapidly. The shortage of donkey skins increases the risk of the adulteration of CCA products with other animal skins. To ensure the drug efficacy and safety of CCA products, a proteomics technique was applied to reveal proteins in the skins of donkey, horse, cattle, and pig. Species-specific peptides for each animal species were predicted using bioinformatics, and their presence in the skins and gelatin samples was examined by nano-liquid chromatography-tandem mass spectrometry (nano-LC-MS/MS)...
2017: International Journal of Nanomedicine
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