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Gold nanoparticles, review

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https://www.readbyqxmd.com/read/28901350/recent-developments-in-the-synthesis-properties-and-biomedical-applications-of-core-shell-superparamagnetic-iron-oxide-nanoparticles-with-gold
#1
REVIEW
Sandip Sabale, Priyanka Kandesar, Vidhya Jadhav, Rachel Komorek, Radha Kishan Motkuri, Xiao-Ying Yu
In the last decade, magnetic nanoparticles (MNPs), especially superparamagnetic iron oxide nanoparticles (SPIONs), have immensely promoted the advancement of diagnostics and theranostics in the biomedical field. The unique properties of the SPIONs-core and the functional gold (Au)-shell together (SPIONS/Au core/shell or CS) have a wide range of biomedical applications including, but not limited to, magnetic resonance imaging (MRI), dual modality MRI/computed tomography (CT), photo-induced and magnetic fluid hyperthermia (MFH), drug delivery, biosensors, and bio-separation...
September 13, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/28898761/state-of-diagnosing-infectious-pathogens-using-colloidal-nanomaterials
#2
REVIEW
Jisung Kim, Mohamed A Abdou Mohamed, Kyryl Zagorovsky, Warren C W Chan
Infectious diseases are a major global threat that accounts for one of the leading causes of global mortality and morbidity. Prompt diagnosis is a crucial first step in the management of infectious threats, which aims to quarantine infected patients to avoid contacts with healthy individuals and deliver effective treatments prior to further spread of diseases. This review article discusses current advances of diagnostic systems using colloidal nanomaterials (e.g., gold nanoparticles, quantum dots, magnetic nanoparticles) for identifying and differentiating infectious pathogens...
August 17, 2017: Biomaterials
https://www.readbyqxmd.com/read/28898717/targeting-dendritic-cells-through-gold-nanoparticles-a-review-on-the-cellular-uptake-and-subsequent-immunological-properties
#3
REVIEW
Suhana Ahmad, Anes Ateqah Zamry, Hern-Tze Tina Tan, Kah Keng Wong, JitKang Lim, Rohimah Mohamud
Gold nanoparticles (NPs) have been proposed as a highly potential tool in immunotherapies due to its advantageous properties including customizable size and shapes, surface functionality and biocompatibility. Dendritic cells (DCs), the sentinels of immune response, have been of interest to be manipulated by using gold NPs for targeted delivery of immunotherapeutic agent. Researches done especially in human DCs showed a variation of gold NPs effects on cellular uptake and internalization, DC maturation and subsequent T cells priming as well as cytotoxicity...
September 9, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28892365/recent-developments-in-antimicrobial-peptide-conjugated-gold-nanoparticles
#4
Urawadee Rajchakit, Vijayalekshmi Sarojini
The escalation of multidrug-resistant pathogens has created a dire need to develop novel ways of addressing this global therapeutic challenge. Because of their antimicrobial activities, combination of antimicrobial peptides (AMPs) and nanoparticles is a promising tool to kill drug resistant pathogens. In recent years, several studies using AMP-nanoparticle conjugates, especially metallic nanoparticles, as potential antimicrobial agents against drug resistant pathogens have been published. Amongst these, antimicrobial peptide conjugated gold nanoparticles (AMP-AuNPs) are particularly attractive because of the non-toxic nature of gold and the possibility of fine tuning the AMP-NP conjugation chemistry...
September 11, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28883725/gold-nanoparticles-enlighten-the-future-of-cancer-theranostics
#5
REVIEW
Jianfeng Guo, Kamil Rahme, Yan He, Lin-Lin Li, Justin D Holmes, Caitriona M O'Driscoll
Development of multifunctional nanomaterials, one of the most interesting and advanced research areas in the field of nanotechnology, is anticipated to revolutionize cancer diagnosis and treatment. Gold nanoparticles (AuNPs) are now being widely utilized in bio-imaging and phototherapy due to their tunable and highly sensitive optical and electronic properties (the surface plasmon resonance). As a new concept, termed "theranostics," multifunctional AuNPs may contain diagnostic and therapeutic functions that can be integrated into one system, thereby simultaneously facilitating diagnosis and therapy and monitoring therapeutic responses...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28882703/pegylation-for-enhancing-nanoparticle-diffusion-in-mucus
#6
Justin T Huckaby, Samuel K Lai
The viscoelastic mucus secretions coating exposed organs such as the lung airways and the female reproductive tract can trap and quickly eliminate not only foreign pathogens and ultrafine particles but also particle-based drug delivery systems, thus limiting sustained and targeted drug delivery at mucosal surfaces. To improve particle distribution across the mucosa and enhance delivery to the underlying epithelium, many investigators have sought to develop nanoparticles capable of readily traversing mucus. The first synthetic nanoparticles shown capable of rapidly penetrating physiological mucus secretions utilized a dense coating of polyethylene glycol (PEG) covalently grafted onto the surface of preformed polymeric nanoparticles...
September 4, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28865004/gold-nanoparticles-with-patterned-surface-monolayers-for-nanomedicine-current-perspectives
#7
REVIEW
Paolo Pengo, Maria Şologan, Lucia Pasquato, Filomena Guida, Sabrina Pacor, Alessandro Tossi, Francesco Stellacci, Domenico Marson, Silvia Boccardo, Sabrina Pricl, Paola Posocco
Molecular self-assembly is a topic attracting intense scientific interest. Various strategies have been developed for construction of molecular aggregates with rationally designed properties, geometries, and dimensions that promise to provide solutions to both theoretical and practical problems in areas such as drug delivery, medical diagnostics, and biosensors, to name but a few. In this respect, gold nanoparticles covered with self-assembled monolayers presenting nanoscale surface patterns-typically patched, striped or Janus-like domains-represent an emerging field...
September 1, 2017: European Biophysics Journal: EBJ
https://www.readbyqxmd.com/read/28858253/unique-roles-of-gold-nanoparticles-in-drug-delivery-targeting-and-imaging-applications
#8
REVIEW
Fen-Ying Kong, Jin-Wei Zhang, Rong-Fang Li, Zhong-Xia Wang, Wen-Juan Wang, Wei Wang
Nanotechnology has become more and more potentially used in diagnosis or treatment of diseases. Advances in nanotechnology have led to new and improved nanomaterials in biomedical applications. Common nanomaterials applicable in biomedical applications include liposomes, polymeric micelles, graphene, carbon nanotubes, quantum dots, ferroferric oxide nanoparticles, gold nanoparticles (Au NPs), and so on. Among them, Au NPs have been considered as the most interesting nanomaterial because of its unique optical, electronic, sensing and biochemical properties...
August 31, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28858240/toxicity-effects-of-functionalized-quantum-dots-gold-and-polystyrene-nanoparticles-on-target-aquatic-biological-models-a-review
#9
REVIEW
Giovanni Libralato, Emilia Galdiero, Annarita Falanga, Rosa Carotenuto, Elisabetta de Alteriis, Marco Guida
Nano-based products are widespread in several sectors, including textiles, medical-products, cosmetics, paints and plastics. Nanosafety and safe-by-design are driving nanoparticle (NP) production and applications through NP functionalization (@NPs). Indeed, @NPs frequently present biological effects that differ from the parent material. This paper reviews the impact of quantum dots (QDs), gold nanoparticles (AuNPs), and polystyrene-cored NPs (PSNPs), evidencing the role of NP functionalization in toxicity definition...
August 31, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28830262/nanocarriers-in-advanced-drug-targeting-setting-novel-paradigm-in-cancer-therapeutics
#10
Md Habban Akhter, Md Rizwanullah, Javed Ahmad, Mohamed Jawed Ahsan, Md Ali Mujtaba, Saima Amin
Cancer has been growing nowadays consequently high number of death ascertained worldwide. The medical intervention involves chemotherapy, radiation therapy and surgical removal. This conventional technique lacking targeting potential and harm the normal cells. In drug treatment regimen, the combination therapy is preferred than single drug treatment module due to higher internalization of chemotherapeutics in the cancer cells both by enhance permeation retention effect and by direct cell apoptosis. The cancer therapeutics involves different methodologies of delivering active moiety to the target site...
August 22, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28804578/using-nanoparticles-in-medicine-for-liver-cancer-imaging
#11
REVIEW
Farideh Farokhi Moghadam
One of the most important types of liver cancer is hepatocellular carcinoma (HCC). HCC is the fifth most common cancer, and its correct diagnosis is very important. For the quick diagnosis of HCC, the use of nanoparticles is helpful. The major applications of nanoparticles are in medicine for organ imaging. Two methods of liver imaging are X-ray computed tomography (CT) and magnetic resonance imaging (MRI). In this review, we attempt to summarize some of the contrast agents used in imaging such as superparamagnetic iron oxide nanoparticles (SPIONs) and iron oxide nanoparticles (IONPs), various types of enhanced MRI for the liver, and nanoparticles like gold (AuNPs), which is used to develop novel CT imaging agents...
July 2017: Oman Medical Journal
https://www.readbyqxmd.com/read/28799495/a-nanotechnology-based-strategy-to-increase-the-efficiency-of-cancer-diagnosis-and-therapy-folate-conjugated-gold-nanoparticles
#12
Jaber Beik, Sara Khademi, Neda Attaran, Saeed Sarkar, Ali Shakeri-Zadeh, Habib Ghaznavi, Hossein Ghadiri
BACKGROUND: Gold nanoparticle (AuNP), owing to its elegant physicochemical properties, has been recently introduced as a promising theranostic nanoparticle. Folic acid is a necessary vitamin for cell proliferation and cancer cells highly require such an essential molecule to be replicated. Accordingly, surface functionalization of AuNP with folic acid may offer great potentials for development of a new nanotechnology based strategy to increase the efficiency of cancer diagnosis and therapy...
August 10, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28795273/capacity-of-gold-nanoparticles-in-cancer-radiotherapy
#13
REVIEW
Nadeem M S Nagi, Yasir A M Khair, Ahmed M E Abdalla
Radiotherapy is the ionizing radiation used for treatment of cancer and other diseases. Although radiotherapy is the major treatment for cancer, a lot of patients do not undergo radiation due to associated risks such as radiation pneumonitis, cardiovascular complications, development of secondary tumor, and lymphedema. However, the advantages of nanotechnology provide a unique potential to enhance radiotherapeutic performance, in particular by utilizing gold nanoparticles (Au NPs). In this review, we briefly describe the current direction of research towards the use of Au NPs for radiotherapeutic enhancement, combination, monitoring and in side effect reductions...
August 9, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/28773196/surface-plasmon-resonance-or-biocompatibility-key-properties-for-determining-the-applicability-of-noble-metal-nanoparticles
#14
REVIEW
Ana Maria Craciun, Monica Focsan, Klara Magyari, Adriana Vulpoi, Zsolt Pap
Metal and in particular noble metal nanoparticles represent a very special class of materials which can be applied as prepared or as composite materials. In most of the cases, two main properties are exploited in a vast number of publications: biocompatibility and surface plasmon resonance (SPR). For instance, these two important properties are exploitable in plasmonic diagnostics, bioactive glasses/glass ceramics and catalysis. The most frequently applied noble metal nanoparticle that is universally applicable in all the previously mentioned research areas is gold, although in the case of bioactive glasses/glass ceramics, silver and copper nanoparticles are more frequently applied...
July 21, 2017: Materials
https://www.readbyqxmd.com/read/28772458/gold-nanoparticles-in-photonic-crystals-applications-a-review
#15
REVIEW
Iole Venditti
This review concerns the recently emerged class of composite colloidal photonic crystals (PCs), in which gold nanoparticles (AuNPs) are included in the photonic structure. The use of composites allows achieving a strong modification of the optical properties of photonic crystals by involving the light scattering with electronic excitations of the gold component (surface plasmon resonance, SPR) realizing a combination of absorption bands with the diffraction resonances occurring in the body of the photonic crystals...
January 24, 2017: Materials
https://www.readbyqxmd.com/read/28771322/characterization-of-ligand-shell-for-mixed-ligand-coated-gold-nanoparticles
#16
Quy Ong, Zhi Luo, Francesco Stellacci
Gold nanoparticles owe a large number of their properties to their ligand shell. Indeed, many researchers routinely use mixtures of ligand molecules for their nanoparticles to impart complex property sets. It has been shown that the morphology of ligand shells (e.g., Janus, random, stripelike) leads to specific properties. Examples include wettability, solubility, protein nonspecific adsorption, cell penetration, catalysis, and cation-capturing abilities. Yet, it remains a great challenge to evaluate such morphologies in even the most fundamental terms such as dimension and shape...
August 3, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28753992/applicability-of-metal-nanoparticles-in-the-detection-and-monitoring-of-hepatitis-b-virus-infection
#17
REVIEW
Maxim Shevtsov, Lili Zhao, Ulrike Protzer, Maarten A A van de Klundert
Chronic infection with the hepatitis B virus (HBV) can lead to liver failure and can cause liver cirrhosis and hepatocellular carcinoma (HCC). Reliable means for detecting and monitoring HBV infection are essential to identify patients in need of therapy and to prevent HBV transmission. Nanomaterials with defined electrical, optical, and mechanical properties have been developed to detect and quantify viral antigens. In this review, we discuss the challenges in applying nanoparticles to HBV antigen detection and in realizing the bio-analytical potential of such nanoparticles...
July 21, 2017: Viruses
https://www.readbyqxmd.com/read/28737382/solid-state-plasmonic-solar-cells
#18
Kosei Ueno, Tomoya Oshikiri, Quan Sun, Xu Shi, Hiroaki Misawa
Metallic nanoparticles such as silver and gold show localized surface plasmon resonances (LSPRs), which are associated with near-field enhancement effects in the vicinity of nanoparticles. Therefore, strong light-matter interaction is induced by the near-field enhancement effects of LSPRs. Because the resonant wavelength of LSPRs can be easily controlled by the size and shape of the metallic nanoparticles in the visible and near-infrared wavelength range, LSPRs have received considerable attention as optical antennae for light energy conversion systems such as solar cells...
July 24, 2017: Chemical Reviews
https://www.readbyqxmd.com/read/28726079/bilirubin-enzyme-biosensor-potentiality-and-recent-advances-towards-clinical-bioanalysis
#19
REVIEW
Vinita Hooda, Anjum Gahlaut, Ashish Gothwal, Vikas Hooda
Bilirubin detection plays a major role in healthcare. Its high concentration in human serum is lethal and must be determined accurately. Clinically, it is vital for assessing patients with deleterious health conditions such as jaundice or icterus, hepatitis, mental disorders, cerebral palsy and brain damage especially in the case of neonates. In evaluating the drawbacks regarding the conventional methodology of bilirubin detection, there is need for a superior analytical tool. Bilirubin oxidase (BOx)-based sensors have been designed for the ultrasensitive analysis of bilirubin and quality deliverance of treatment and this review highlights the different mechanisms of bilirubin detection using different modified electrodes...
July 19, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/28716129/current-knowledge-on-feline-injection-site-sarcoma-treatment
#20
REVIEW
Katarzyna Zabielska-Koczywąs, Anna Wojtalewicz, Roman Lechowski
Feline injection-site sarcomas (FISS) are malignant skin tumours of mesenchymal origin, the treatment of which is a challenge for veterinary surgeons. The role of surgery, radiotherapy and chemotherapy in FISS treatment has been studied, and a correlation between "clean" surgical margins and disease-free survival has been shown. In addition, clean surgical margins are one of the most important factors for achieving a low recurrence rate. The most effective method of FISS treatment includes combining radical surgery with pre- or postoperative radiotherapy...
July 17, 2017: Acta Veterinaria Scandinavica
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