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https://www.readbyqxmd.com/read/28643452/emerging-nanotechnology-and-advanced-materials-for-cancer-radiation-therapy
#1
REVIEW
Guosheng Song, Liang Cheng, Yu Chao, Kai Yang, Zhuang Liu
Radiation therapy (RT) including external beam radiotherapy (EBRT) and internal radioisotope therapy (RIT) has been widely used for clinical cancer treatment. However, owing to the low radiation absorption of tumors, high doses of ionizing radiations are often needed during RT, leading to severe damages to normal tissues adjacent to tumors. Meanwhile, the RT efficacies are limited by different mechanisms, among which the tumor hypoxia-associated radiation resistance is a well-known one, as there exists hypoxia inside most solid tumors while oxygen is essential to enhance radiation-induced DNA damages...
June 23, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28641516/updated-regulatory-considerations-for-nanomedicines
#2
Sankarankutty Subin, Venugopal Vijayan, Jaya Raja Kumar
BACKGROUND: Nanomedicine is a branch which deals with medicinal products, devices, non-biological complex drugs and antibody-nanoparticle conjugates and general health products that are manufactured using nanotechnology. OBJECTIVE: Nanomedicine provide the same efficacies as traditional medicines owing to their improved solubility and bioavailability with reduced dosages. However, there are currently safety concerns due to the difficulties related to nanomaterial characterization; this might be the reason for unawareness of such medicines among the patients...
June 14, 2017: Pharmaceutical Nanotechnology
https://www.readbyqxmd.com/read/28621571/targeted-nanotechnologies-for-cancer-intervention-a-patent-review-2010-2016
#3
Priyamvada Pradeep, Pradeep Kumar, Yahya E Choonara, Viness Pillay
In recent years, several active targeting nanostrategies have been patented for application in cancer theranostics. The versatility of nanostructures in terms of composition, manufacturability, functionalization, and matrix formation make them ideal for carrying large dose of bioactive contents, high density of targeting ligands on their surface, efficient delivery to the site of interest, and capable of forming multicomponent platforms. Areas covered: The patents were classified into polymeric and non-polymeric nanostructures and their applicability in addressing the targeting paradigm related to cancer intervention was explored...
June 22, 2017: Expert Opinion on Therapeutic Patents
https://www.readbyqxmd.com/read/28595480/in-vitro-evaluation-of-cobalt-oxide-nanoparticle-induced-toxicity
#4
Mahmoud Abudayyak, Tuba Altincekic Gurkaynak, Gül Özhan
Cobalt oxide (Co3O4) nanoparticles have applications in nanomedicine and nanotechnology; therefore, any possible adverse effects require thorough investigation. The present study investigated the effects of Co3O4 nanoparticles on four different cell lines: liver, HepG2 hepatocellular carcinoma cells; lung, A549 lung carcinoma cells; gastrointestinal, Caco-2 colorectal adenocarcinoma cells; and nervous system, SH-SY5Y neuroblastoma cells. A difference was observed in cell sensitivity toward Co3O4 nanoparticles...
January 1, 2017: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/28589558/potential-applications-and-human-biosafety-of-nanomaterials-used-in-nanomedicine
#5
REVIEW
Hong Su, Yafei Wang, Yuanliang Gu, Linda Bowman, Jinshun Zhao, Min Ding
With the rapid development of nanotechnology, potential applications of nanomaterials in medicine have been widely researched in recent years. Nanomaterials themselves can be used as image agents or therapeutic drugs, and for drug and gene delivery, biological devices, nanoelectronic biosensors or molecular nanotechnology. As the composition, morphology, chemical properties, implant sites as well as potential applications become more and more complex, human biosafety of nanomaterials for clinical use has become a major concern...
June 6, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/28583367/application-of-modelling-and-nanotechnology-based-approaches-the-emergence-of-breakthroughs-in-theranostics-of-central-nervous-system-disorders
#6
REVIEW
Parichehr Hassanzadeh, Fatemeh Atyabi, Rassoul Dinarvand
The limited efficiency of the current treatment options against the central nervous system (CNS) disorders has created increasing demands towards the development of novel theranostic strategies. The enormous research efforts in nanotechnology have led to the production of highly-advanced nanodevices and biomaterials in a variety of geometries and configurations for targeted delivery of genes, drugs, or growth factors across the blood-brain barrier. Meanwhile, the richness or reliability of data, drug delivery methods, therapeutic effects or potential toxicity of nanoparticles, occurrence of the unexpected phenomena due to the polydisperse or polymorphic nature of nanomaterials, and personalized theranostics have remained as challenging issues...
June 2, 2017: Life Sciences
https://www.readbyqxmd.com/read/28583328/3d-printed-tablets-loaded-with-polymeric-nanocapsules-an-innovative-approach-to-produce-customized-drug-delivery-systems
#7
R C R Beck, P S Chaves, A Goyanes, B Vukosavljevic, A Buanz, M Windbergs, A W Basit, S Gaisford
The generation of multi-functional drug delivery systems, namely solid dosage forms loaded with nano-sized carriers, remains little explored and is still a challenge for formulators. For the first time, the coupling of two important technologies, 3D printing and nanotechnology, to produce innovative solid dosage forms containing drug-loaded nanocapsules was evaluated here. Drug delivery devices were prepared by fused deposition modelling (FDM) from poly(ε-caprolactone) (PCL) and Eudragit(®) RL100 (ERL) filaments with or without a channelling agent (mannitol)...
June 3, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28574639/dna-origami-applications-in-cancer-therapy
#8
REVIEW
Anuttara Udomprasert, Thaned Kangsamaksin
Due to the complexity and heterogeneity of cancer, the development of cancer diagnosis and therapy is still progressing, and a complete understanding of cancer biology still remain elusive. Recently, cancer nanomedicine has gained much interest as promising diagnostic and therapeutic strategies as a wide range of nanomaterials possess unique physical properties that can render drug delivery systems more effective and safer. Also, targeted drug delivery and precision medicine have now become a new paradigm in cancer therapy...
June 2, 2017: Cancer Science
https://www.readbyqxmd.com/read/28564631/perspectives-on-dendritic-architectures-and-their-biological-applications-from-core-to-cell
#9
Valikala Viswanath, Kannappan Santhakumar
The challenges of medicine today include the increasing stipulation for sensitive and effective systems that can improve the pathological responses with a simultaneous reduction in accumulation and drug side effects. The demand can be fulfilled through the advancements in nanomedicine that includes nanostructures and nanodevices for diagnosing, treating, and prevention of various diseases. In this respect, the nanoscience provides various novel techniques with carriers such as micelles, dendrimers, particles and vesicles for the transportation of active moieties...
May 22, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28559935/current-status-and-future-direction-of-nanomedicine-focus-on-advanced-biological-and-medical-applications
#10
REVIEW
Eun-Mi Kim, Hwan-Jeong Jeong
Nanotechnology is the engineering and manipulation of materials and devices with sizes in the nanometer range. Colloidal gold, iron oxide nanoparticles and quantum dot semiconductor nanocrystals are examples of nanoparticles, with sizes generally ranging from 1 to 20 nm. These nanotechnologies have been researched tremendously in the last decade and this has led to a new area of "nanomedicine" which is the application of nanotechnology to human health-care for diagnosis, monitoring, treatment, prediction and prevention of diseases...
June 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28540165/nanotechnology-based-strategies-for-treatment-of-ocular-disease
#11
REVIEW
Yuhua Weng, Juan Liu, Shubin Jin, Weisheng Guo, Xingjie Liang, Zhongbo Hu
Ocular diseases include various anterior and posterior segment diseases. Due to the unique anatomy and physiology of the eye, efficient ocular drug delivery is a great challenge to researchers and pharmacologists. Although there are conventional noninvasive and invasive treatments, such as eye drops, injections and implants, the current treatments either suffer from low bioavailability or severe adverse ocular effects. Alternatively, the emerging nanoscience and nanotechnology are playing an important role in the development of novel strategies for ocular disease therapy...
May 2017: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/28486906/safety-and-toxicological-considerations-of-nanomedicines-the-future-directions
#12
Parmi Patel, Jigna Shah
Nanomedicine, an emerging nanotechnology, imparts special biological features due to their quantum size and is a promising candidate for targeted drug delivery. At present, in spite of its novel applications in medical sciences, certain existing gaps still needs to be addressed such as fate of nanoparticles and its toxicity assessment on human health. Behaviour of the entities post human body exposure and its deposition up to certain extent are some of the crucial factors to be considered for a successful treatment approach...
May 9, 2017: Current Clinical Pharmacology
https://www.readbyqxmd.com/read/28477099/nanomedicine-advances-in-toxoplasmosis-diagnostic-treatment-and-vaccine-applications
#13
REVIEW
João Paulo Assolini, Virginia Márcia Concato, Manoela Daiele Gonçalves, Amanda Cristina Machado Carloto, Ivete Conchon-Costa, Wander Rogério Pavanelli, Francine Nesello Melanda, Idessania Nazareth Costa
Toxoplasmosis is an infectious disease caused by the intracellular parasite Toxoplasma gondii that affects about one third of the world's population. The diagnosis of this disease is carried out by parasite isolation and host antibodies detection. However, the diagnosis presents problems in regard to test sensitivity and specificity. Currently, the most effective T. gondii treatment is a combination of pyrimethamine and sulfadiazine, although both drugs are toxic to the host. In addition to the problems that compromise the effective diagnosis and treatment of toxoplasmosis, there are no reports or indications of any vaccine capable of fully protecting against this infection...
May 5, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28476987/phytochemical-constituents-of-fucoidan-padina-tetrastromatica-and-its-assisted-agnps-for-enhanced-antibacterial-activity
#14
S Rajeshkumar
Biological synthesis of nanomaterials is a growing innovative approach and it was broadly utilised in the field of nanotechnology and nanomedicine. This study illustrates that biosynthesis of silver nanoparticles (AgNPs) using fucoidan extracted from seaweed Padina tetrastromatica. The functional groups of extracted fucoidan were characterised by Fourier transform infrared spectroscopy (FTIR) and used to NPs synthesis. Synthesised AgNPs were characterised by ultraviolet-visible spectra, scanning electron microscope, energy dispersive X-ray, transmission electron microscope, selected area electron diffraction and FTIR...
April 2017: IET Nanobiotechnology
https://www.readbyqxmd.com/read/28471199/-zinc-modified-nanotransporter-for-target-drug-therapy-of-breast-cancer
#15
S Skaličková, M Gargulák, M Löffelmann, B Ruttkay-Nedecký, M Kepinská, T Parák, R Kizek
BACKGROUND: In the centre of nanomedical interest stands the nanotechnological modification of anthracycline antibiotics, which are often used in antitumor treatment of hematological malignancies and solid tumors. Chitosan nanoparticles are gaining more attention in the field of targeted transport of drugs because of their stability, low toxicity and simple preparation. The main objective of the project, was the design of chitosan nanotransporter of anthracycline antibiotics with zinc modified surface, for a specific interaction with metallothionein...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/28445611/equivalence-of-complex-drug-products-advances-in-and-challenges-for-current-regulatory-frameworks
#16
Leonie Hussaarts, Stefan Mühlebach, Vinod P Shah, Scott McNeil, Gerrit Borchard, Beat Flühmann, Vera Weinstein, Sesha Neervannan, Elwyn Griffiths, Wenlei Jiang, Elena Wolff-Holz, Daan J A Crommelin, Jon S B de Vlieger
Biotechnology and nanotechnology provide a growing number of innovator-driven complex drug products and their copy versions. Biologics exemplify one category of complex drugs, but there are also nonbiological complex drug products, including many nanomedicines, such as iron-carbohydrate complexes, drug-carrying liposomes or emulsions, and glatiramoids. In this white paper, which stems from a 1-day conference at the New York Academy of Sciences, we discuss regulatory frameworks in use worldwide (e.g., the U...
April 26, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28442906/a-review-of-drug-delivery-systems-based-on-nanotechnology-and-green-chemistry-green-nanomedicine
#17
REVIEW
Hossein Jahangirian, Ensieh Ghasemian Lemraski, Thomas J Webster, Roshanak Rafiee-Moghaddam, Yadollah Abdollahi
This review discusses the impact of green and environmentally safe chemistry on the field of nanotechnology-driven drug delivery in a new field termed "green nanomedicine". Studies have shown that among many examples of green nanotechnology-driven drug delivery systems, those receiving the greatest amount of attention include nanometal particles, polymers, and biological materials. Furthermore, green nanodrug delivery systems based on environmentally safe chemical reactions or using natural biomaterials (such as plant extracts and microorganisms) are now producing innovative materials revolutionizing the field...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28436959/peptide-mhc-based-nanomedicines-for-autoimmunity-function-as-t-cell-receptor-microclustering-devices
#18
Santiswarup Singha, Kun Shao, Yang Yang, Xavier Clemente-Casares, Patricia Solé, Antonio Clemente, Jesús Blanco, Qin Dai, Fayi Song, Shang Wan Liu, Jun Yamanouchi, Channakeshava Sokke Umeshappa, Roopa Hebbandi Nanjundappa, Pascal Detampel, Matthias Amrein, César Fandos, Robert Tanguay, Susan Newbigging, Pau Serra, Anmar Khadra, Warren C W Chan, Pere Santamaria
We have shown that nanoparticles (NPs) can be used as ligand-multimerization platforms to activate specific cellular receptors in vivo. Nanoparticles coated with autoimmune disease-relevant peptide-major histocompatibility complexes (pMHC) blunted autoimmune responses by triggering the differentiation and expansion of antigen-specific regulatory T cells in vivo. Here, we define the engineering principles impacting biological activity, detail a synthesis process yielding safe and stable compounds, and visualize how these nanomedicines interact with cognate T cells...
April 24, 2017: Nature Nanotechnology
https://www.readbyqxmd.com/read/28422481/gold-nanoparticles-induced-endothelial-leakiness-depends-on-particle-size-and-endothelial-cell-origin
#19
Magdiel I Setyawati, Chor Yong Tay, Boon Huat Bay, David T Leong
The endothelium presents a formidable barrier for cancer nanomedicine, as the intravenously introduced nanomedicine needs to leave the blood vessel at the tumor site. Endothelial permeability and retention effect (EPR) is not dependable since it is derived from tumors. Certain nanoparticles with specific characteristics are able to induce micrometer sized gaps between endothelial cells. This effect is called "nanoparticle induced endothelial leakiness" (NanoEL). NanoEL therefore allows the nanotechnology to control access to the tumor even in the absence of any EPR effect...
April 20, 2017: ACS Nano
https://www.readbyqxmd.com/read/28416486/a-squalene-based-nanomedicine-for-oral-treatment-of-colon-cancer
#20
Larissa Kotelevets, Eric Chastre, Joachim Caron, Julie Mougin, Gerard Bastian, Alain Pineau, Francine Walker, Therese Lehy, Didier Desmaële, Patrick Couvreur
Nanotechnology offers many possibilities to improve drug treatments, including with regard to drug pharmacology. The current study reports a simple approach to improve cisplatin efficacy in the treatment of colon cancer through the creation of orally administered squalenoylated nanoparticles loaded with cisplatin (SQ-CDDP NP). Cytotoxic effects of SQ-CDDP NP were assessed in human colonic cells and in mouse models of intestinal cancer. In cell culture, SQ-CDDP NP exhibited at least 10-fold greater cytotoxic potency compared with uncomplexed cisplatin, reflecting an enhancement in intracellular accumulation and DNA platination...
April 17, 2017: Cancer Research
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