Pharmacokinetics and biodistribution of negatively charged pectin nanoparticles encapsulating paclitaxel
We report preparation of negatively charged pectin nanoparticles encapsulating paclitaxel, a broad-spectrum anticancer drug for possible therapeutic applications. The mean diameter of the nanoparticles was ~300–350 nm with an encapsulation efficiency ~17 %. The TEM studies indicated that the particles were spherical in shape and their sizes are in unison with the DLS size spectra. The surface charge of pectin polymer was −5 mV and of nanoparticles were ~ −32 mV. The enhanced surface charge shows greater stability. The high electrophoretic mobility of ~3.5 to 1.5 μmcm/Vs confirmed the nano-size of particles. We ...
Source: Cancer Nanotechnology - August 1, 2013 Category: Cancer & Oncology Source Type: research
Surface plasmon-enhanced Ag/CuS nanocomposites for cancer treatment
In this study, the CuS nano-PTT efficiency is enhanced via the local field enhancement from Ag nanoparticle surface plasmon coupling. The results show that absorbance of CuS nanoparticles in Ag/CuS nanocomposites is enhanced about four times by Ag nanoparticle surface plasmon coupling. Consequently, the PTT efficacy is enhanced and a power of 0.6 W/cm2 with a 980-nm laser is sufficient for Ag/CuS nano-PTT activation for cancer treatment in vitro observations. (Source: Cancer Nanotechnology)
Source: Cancer Nanotechnology - August 1, 2013 Category: Cancer & Oncology Source Type: research
Green synthesis of gold nanoparticles and their anticancer activity
Abstract
As the nano revolution unfolds, it is imperative to integrate nanoscience and medicine. The secret gleaned from nature have led to the generation of biogenic technologies for the fabrication of advanced nanomaterials. Present investigation discloses the gold nanoparticles biosynthesizing capability of the flower of pharmacologically important tree Couroupita guianensis. Rapid, cost-effective, one-step process of synthesis has been achieved. Newly genre gold nanoparticles were characterized by involving UV–vis spectroscopy, FTIR, XRD, SEM, and TEM analysis. Interestingly, as a result of extens...
Source: Cancer Nanotechnology - August 1, 2013 Category: Cancer & Oncology Source Type: research
Fungus-mediated synthesis of silver nanoparticles and evaluation of antitumor activity
Abstract
Silver nanoparticles (AgNPs) were biologically synthesized using aqueous extract of Agaricus bisporus fungi. Physicochemical analysis of silver nanoparticles revealed that they are of spherical shape ranged size of 8–20 nm, and their zeta potential equal −7.23 mV. Silver nanoparticles showed a dose-dependent cytotoxic effect on MCF-7 breast cancer cells with LD50 (50 μg/ml). Mice bearing Ehrlich solid tumor treated with AgNPs and exposed to gamma radiation significantly ameliorated superoxide dismutase and catalase activity and reduced glutathione with an increase in malondialdehyde and...
Source: Cancer Nanotechnology - August 1, 2013 Category: Cancer & Oncology Source Type: research
Intelligent system design for bionanorobots in drug delivery
In this study, we designed an intelligent system using fuzzy logic for diagnosis and treatment of tumors inside the human body using bionanorobots. We utilize fuzzy logic and a combination of thermal, magnetic, optical, and chemical nanosensors to interpret the uncertainty associated with the sensory information. Two different fuzzy logic structures, for diagnosis (Mamdani structure) and for cure (Takagi–Sugeno structure), were developed to efficiently identify the tumors and treat them through delivery of effective dosages of a drug. Validation of the designed system with simulated conditions proved that the drug delive...
Source: Cancer Nanotechnology - August 1, 2013 Category: Cancer & Oncology Source Type: research
Active targeting of HER2-positive breast cancer cells by Herceptin-functionalized organically modified silica nanoparticles
Abstract
Normal micelle microemulsion method was utilized for fabrication of organically modified silica (ORMOSIL) nanoparticles. The void and dye-doped nanoparticles were synthesized in nonpolar core of two different surfactants including Aerosol OT and Tween 80. The nanoparticles were characterized using transmission electron microscopy, dynamic light scattering, and zeta potential analysis. Our results revealed that the type of surfactant molecules has a dramatic impact on the size and size distribution range, surface charge, and surface functionalization of the nanoparticles. The particles fabricate...
Source: Cancer Nanotechnology - June 1, 2013 Category: Cancer & Oncology Source Type: research
