keyword
MENU ▼
Read by QxMD icon Read
search

nano biology

keyword
https://www.readbyqxmd.com/read/28097599/biosynthesis-characterization-and-bioactivities-evaluation-of-silver-and-gold-nanoparticles-mediated-by-the-roots-of-chinese-herbal-angelica-pubescens-maxim
#1
Josua Markus, Dandan Wang, Yeon-Ju Kim, Sungeun Ahn, Ramya Mathiyalagan, Chao Wang, Deok Chun Yang
A facile synthesis and biological applications of silver (DH-AgNps) and gold nanoparticles (DH-AuNps) mediated by the aqueous extract of Angelicae Pubescentis Radix (Du Huo) are explored. Du Huo is a medicinal root belonging to Angelica pubescens Maxim which possesses anti-inflammatory, analgesic, and antioxidant properties. The absorption spectra of nanoparticles in varying root extract and metal ion concentration, pH, reaction temperatures, and time were recorded by ultraviolet-visible (UV-Vis) spectroscopy...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28097087/identification-of-the-vascular-endothelial-growth-factor-signalling-pathway-by-quantitative-proteomic-analysis-of-rat-condylar-cartilage
#2
Liting Jiang, Yinyin Xie, Li Wei, Qi Zhou, Xing Shen, Xinquan Jiang, Yiming Gao
Angiogenesis mediated by vascular endothelial growth factor (VEGF) is known to play an important role in regulating cartilage remodelling and endochondral ossification. However, the details of how VEGF signalling mechanisms affect condyle remodelling in response to alterations in functional loading remains unclear. To explore this, eighty 16-day-old male SD rats were divided into two equal groups which were fed either a soft/powdery diet or a hard diet for 4 weeks; the stiffness of the diet results in alteration of mastication force and hence temporomandibular joint (TMJ) development...
January 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/28094510/nanoporous-gold-based-electrode-morphology-libraries-for-investigating-structure-property-relationships-in-nucleic-acid-based-electrochemical-biosensors
#3
Zimple Matharu, Pallavi Daggumati, Ling Wang, Tatiana S Dorofeeva, Zidong Li, Erkin Seker
Nanoporous gold (np-Au) electrode coatings significantly enhance performance of electrochemical nucleic acid biosensors due to their three-dimensional nanoscale network, high electrical conductivity, facile surface functionalization, and biocompatibility. Contrary to planar electrodes, the np-Au electrodes also exhibit sensitive detection in the presence of common biofouling media due to their porous structure. However, the pore size of the nano-matrix plays a critical role in dictating the extent of biomolecular capture and transport...
January 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28093980/emerging-advances-in-nanomedicine-as-a-nanoscale-pharmacotherapy-in-rheumatoid-arthritis-state-of-the-art
#4
Mahfoozur Rahman, Gajanand Sharma, Kanika Thakur, Firoz Anwar, O P Katare, Vijay G Goni, Vikas Kumar, Mazin A Zamzami, Sohail Akhter
There are several significant setbacks including limited bioavailability, high clearance, and further current therapies require higher and frequent dosing to gain desired therapeutic effects. Nanomedicines have been widely investigated for rheumatoid arthritis (RA). Though, higher doses also increase the incidence of dreadful adverse effects. Further, nanocarrier properties are tuned by the use of different approaches like varied methods of loading, hydrophilic polymers and targeting ligands, to change the physicochemical properties including higher encapsulation, better penetrating ability to biological barriers, thus preventing the uptake of various nanocarriers by liver and spleen...
2017: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/28092502/capacity-evaluation-of-a-quantum-based-channel-in-a-biological-context
#5
Valeria Loscri, Anna Maria Vegni
Nanotechnology, as enabler of the miniaturization of devices in a scale ranging from 1 to few hundreds of nm , represents a viable solution for " alternative" communication paradigms that could be effective in complex networked systems, as body area networks. Traditional communication paradigms are not effective in the context of joint body and nano-networked systems, for several reasons, and then novel approaches have been investigated such as nanomechanical, electromagnetic, acoustic, molecular, etc. On the other hand, quantum phenomena represent a natural direction for developing nanotechnology, since it has to be considered as a new scale where new phenomena can occur and can be exploited for information purpose...
December 2016: IEEE Transactions on Nanobioscience
https://www.readbyqxmd.com/read/28089786/3-carboxyphenylboronic-acid-modified-carboxymethyl-chitosan-nanoparticles-for-improved-tumor-targeting-and-inhibitory
#6
Xin Wang, Bing Wei, Xu Cheng, Jun Wang, Rupei Tang
Carboxymethyl chitosan-based nanoparticles (CM NPs) were prepared, and were further modified with a tumor-homing ligand (3-carboxyphenylboronic acid, 3-CPBA) to give tumor-targeting nanoparticles (CB NPs). Particle sizes were measured by dynamic light scattering, while the morphology was observed via transmission electron microscopy and scanning electronic microscope. The results show that CM and CB NPs are spherical-like, and kinetically stable in various conditions. Doxorubicin (DOX) as a model drug was successfully encapsulated to give CM-DOX and CB-DOX NPs...
January 12, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28088748/a-dna-probe-based-on-phosphorescent-resonance-energy-transfer-for-detection-of-transgenic-35s-promoter-dna
#7
Jinzhi Lv, Yanming Miao, Jiajia Yang, Jin Qin, Dongxia Li, Guiqin Yan
A QDs-DNA nano-probe was made by combining Mn-doped ZnS room-temperature phosphorescence (RTP) quantum dots (QDs) and DNA. Then an RTP sensor for quantitative detection of genetically-modified mark sequence cauliflower mosaic virus 35S promoter (Ca MV 35S) DNA was built on basis of phosphorescent resonance energy transfer (PRET). The underlying principles were that a QDs-DNA water-soluble nano-probe was built by connecting single-strand DNA to the surfaces of QDs via a ligand exchange method. This probe had good RTP performance and could well identify Ca MV 35S...
January 7, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28087422/nano-qsar-in-cell-biology-model-of-cell-viability-as-a-mathematical-function-of-available-eclectic-data
#8
Alla P Toropova, Andrey A Toropov
The prediction of biochemical endpoints is an important task of the modern medicinal chemistry, cell biology, and nanotechnology. Simplified molecular input-line entry system (SMILES) is a tool for representation of the molecular structure. In particular, SMILES can be used to build up the quantitative structure - property / activity relationships (QSPRs/QSARs). The QSPR/QSAR is a tool to predict an endpoint for a new substance, which has not been examined in experiment. Quasi-SMILES are representation of eclectic data related to an endpoint...
January 10, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28080023/microbial-nanoscopy-breakthroughs-challenges-and-opportunities
#9
Yves F Dufrêne
Studying the structure, properties, and interactions of microbial cells is key to understanding the functions of the microbiome. Recent advances in nanotechnology have offered new tools to probe microbes at the single-molecule and single-cell levels. In this issue of ACS Nano, Kumar et al. present an atomic force microscopy method that is capable of imaging the nanoscale organization of bacterial proteins in native, curved membranes. This study represents an important step forward in the development of nanoscopy techniques for analyzing biological systems with large curvature and vertical dimensions, such as membrane vesicles and bacterial cells...
January 12, 2017: ACS Nano
https://www.readbyqxmd.com/read/28078990/mass-spectrometry-imaging-in-nanomedicine-unraveling-the-potential-of-msi-for-the-detection-of-nanoparticles-in-neuroscience
#10
Florian Py Barré, Ron Ma Heeren, Nina Ogrinc Potočnik
Mass spectrometry imaging (MSI) can uniquely detect thousands of compounds allowing both their identification and localization within biological tissue samples. MSI is an interdisciplinary science that crosses the borders of physics, chemistry and biology, and enables local molecular analysis at a broad range of length scales: From the subcellular level to whole body tissue sections. The spatial resolution of some mass spectrometers now allows nano-scale research, crucial for studies in nanomedicine. Recent developments in MSI have enabled the optimization and localization of drug delivery with nanoparticles within the body and in specific organs such as kidney, liver and brain...
January 11, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28078770/synthetic-plant-virology-for-nanobiotechnology-and-nanomedicine
#11
REVIEW
John F C Steele, Hadrien Peyret, Keith Saunders, Roger Castells-Graells, Johanna Marsian, Yulia Meshcheriakova, George P Lomonossoff
Nanotechnology is a rapidly expanding field seeking to utilize nano-scale structures for a wide range of applications. Biologically derived nanostructures, such as viruses and virus-like particles (VLPs), provide excellent platforms for functionalization due to their physical and chemical properties. Plant viruses, and VLPs derived from them, have been used extensively in biotechnology. They have been characterized in detail over several decades and have desirable properties including high yields, robustness, and ease of purification...
January 11, 2017: Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
https://www.readbyqxmd.com/read/28075593/formation-of-nickel-clusters-wrapped-in-carbon-cages-toward-new-endohedral-metallofullerene-synthesis
#12
Alexander S Sinitsa, Thomas W Chamberlain, Thilo Zoberbier, Irina V Lebedeva, Andrey M Popov, Andrey A Knizhnik, Robert L McSweeney, Johannes Biskupek, Ute Kaiser, Andrei N Khlobystov
Despite the high potential of endohedral metallofullerenes (EMFs) for application in biology, medicine and molecular electronics, and recent efforts in EMF synthesis, the variety of EMFs accessible by conventional synthetic methods remains limited and does not include, for example, EMFs of late transition metals. We propose a method in which EMF formation is initiated by electron irradiation in aberration-corrected high-resolution transmission electron spectroscopy (AC-HRTEM) of a metal cluster surrounded by amorphous carbon inside a carbon nanotube serving as a nanoreactor and apply this method for synthesis of nickel EMFs...
January 18, 2017: Nano Letters
https://www.readbyqxmd.com/read/28074370/comparative-toxicity-of-nano-zno-and-bulk-zno-towards-marine-algae-tetraselmis-suecica-and-phaeodactylum-tricornutum
#13
Jiji Li, Simona Schiavo, Gabriella Rametta, Maria Lucia Miglietta, Vera La Ferrara, Changwen Wu, Sonia Manzo
The wide use of ZnO nanoparticles in a number of products implies an increasing release into the marine environment, resulting in the need to evaluate the potential effects upon organisms, and particularly phytoplankton, being at the base of the throphic chain. To this aim, dose-response curves for the green alga Tetraselmis suecica and the diatom Phaeodactylum tricornutum derived from the exposure to nano ZnO (100 nm) were evaluated and compared with those obtained for bulk ZnO (200 nm) and ionic zinc. The toxic effects to both algae species were reported as no observable effect concentration (NOEC) of growth inhibition and as 1, 10, and 50% effect concentrations (EC1, EC10, and EC50)...
January 10, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28071595/hybrid-3d-2d-printing-for-bone-scaffolds-fabrication
#14
V A Seleznev, V Ya Prinz
It is a well-known fact that bone scaffold topography on micro- and nanometer scale influences the cellular behavior. Nano-scale surface modification of scaffolds allows the modulation of biological activity for enhanced cell differentiation. To date, there has been only a limited success in printing scaffolds with micro- and nano-scale features exposed on the surface. To improve on the currently available imperfect technologies, in our paper we introduce new hybrid technologies based on a combination of 2D (nano imprint) and 3D printing methods...
January 10, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28069500/solution-blow-spinning-fibres-new-immunologically-inert-substrates-for-the-analysis-of-cell-adhesion-and-motility
#15
Rafaella T Paschoalin, Bruna Traldi, Gülcan Aydin, Juliano E Oliveira, Stephan Rütten, Luiz H C Mattoso, Martin Zenke, Antonio Sechi
The control of cell behaviour through material geometry is appealing as it avoids the requirement for complex chemical surface modifications. Significant advances in new technologies have been made to the development of polymeric biomaterials with controlled geometry and physico-chemical properties. Solution blow spinning technique has the advantage of ease of use allowing the production of nano or microfibres and the direct fibre deposition on any surface in situ. Yet, in spite of these advantages, very little is known about the influence of such fibres on biological functions such as immune response and cell migration...
January 6, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28069228/cu-sns-sno2-nanoparticles-as-novel-sorbent-for-dispersive-micro-solid-phase-extraction-of-atorvastatin-in-human-plasma-and-urine-samples-by-high-performance-liquid-chromatography-with-uv-detection-application-of-central-composite-design-ccd
#16
Mehdi Dastkhoon, Mehrorang Ghaedi, Arash Asfaram, Maryam Arabi, Abbas Ostovan, Alireza Goudarzi
Separation and detection of residual drug in biological fluids has directly related to human health in term of their beneficial or side effects. In biological fluid samples (complex matrix which containing drug at very low level) conduction of preliminary efficient technique as good choice for pre-concentration and clean-up of real sample before their instrumental analysis is highly recommended. In this result technique, based on nano-structure material which poses higher available surface area and larger member of reactive sites led to significant improvement in characteristic performance of analytical method...
May 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28068099/mechanisms-and-barriers-in-cancer-nanomedicine-addressing-challenges-looking-for-solutions
#17
Thomas J Anchordoquy, Yechezkel Barenholz, Diana Boraschi, Michael Chorny, Paolo Decuzzi, Marina A Dobrovolskaia, Z Shadi Farhangrazi, Dorothy Farrell, Alberto Gabizon, Hamidreza Ghandehari, Biana Godin, Ninh M La-Beck, Julia Ljubimova, S Moein Moghimi, Len Pagliaro, Ji-Ho Park, Dan Peer, Erkki Ruoslahti, Natalie J Serkova, Dmitri Simberg
Remarkable progress has recently been made in the synthesis and characterization of engineered nanoparticles for imaging and treatment of cancers, resulting in several promising candidates in clinical trials. Despite these advances, clinical applications of nanoparticle-based therapeutic/imaging agents remain limited by biological, immunological, and translational barriers. In order to overcome the existing status quo in drug delivery, there is a need for open and frank discussion in the nanomedicine community on what is needed to make qualitative leaps toward translation...
January 9, 2017: ACS Nano
https://www.readbyqxmd.com/read/28065359/role-of-nanotechnology-in-erectile-dysfunction-treatment
#18
REVIEW
Alice Y Wang, Carol A Podlasek
INTRODUCTION: The biological importance of nanotechnology-based delivery vehicles for in vivo tissue regeneration is gaining acceptance by the medical community; however, its relevance and incorporation into the treatment of sexual dysfunction are evolving and have not been well evaluated. AIM: To provide scientific evidence examining the use of state-of-the-art nanotechnology-based delivery methodology in the treatment of erectile dysfunction (ED) in animal models and in patients...
January 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28062299/bio-nano-interface-the-impact-of-biological-environment-on-nanomaterials-and-their-delivery-properties
#19
REVIEW
Kaimin Cai, Andrew Z Wang, Lichen Yin, Jianjun Cheng
The past several decades have witnessed the rapid development of nanomedicine (NM) which integrates the advancement of various interdisciplinary areas of science, engineering, and medicine. While a few clinical successes of NM greatly change the landscape of disease diagnosis and treatment, there are several areas of NM remaining to be explored. One such area is the complicated interactions between the NM and biological environment post administration, and how such interaction affects the biological performance of NM...
January 3, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28057767/nano-random-forests-to-mine-protein-complexes-and-their-relationships-in-quantitative-proteomics-data
#20
Luis F Montaño-Gutierrez, Shinya Ohta, Georg Kustatscher, William C Earnshaw, Juri Rappsilber
Ever-increasing numbers of quantitative proteomics datasets constitute a currently underexploited resource for investigating protein function. Multi-protein complexes often follow consistent trends in these experiments, which could provide insights about their biology. Yet, as more experiments are considered, a complex's signature may become conditional and less identifiable. Previously, we successfully distinguished the general proteomic signature of genuine chromosomal proteins from hitchhikers using the Random Forests (RFs) machine learning algorithm...
January 5, 2017: Molecular Biology of the Cell
keyword
keyword
67057
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"