background and objectives according to islamic doctrines, the use of gold for men has been banned. in general, any advised subject in islam is useful for the body and what has definitely forbidden for a man is definitely harmful for him although its reasons have not been exactly specified. however, muslims believe that there is certainly a sound reason behind this prohibition. this issue was st...

Aims : To investigate the toxic effect of gold nanoparticles (GNPs) to the learning and memory of mice. Main methods: Naked GNPs of 17 nm and 37 nm were synthesized, purified, and injected intraperitoneally into BALB/C mice at a dose of 8 mg/kg/week. Passive avoidance test was performed to detect the possible leaning impairment. Biochemical analysis to examine levels of monoamine and acetylchol...

cell-based biosensors have become a research hotspot in biosensors and bioelectronics fields. the main feature of cell-based biosensors is the immobilization of living cell on the surface of transducers. different types of polymers which are used as scaffolds for cell growth should be biocompatible and have reactive functional groups for further attachment of biomolecules. in this work, the cel...

BACKGROUND Nanogold has been investigated in a wide variety of biomedical applications because of the anti-inflammatory properties. The purpose of this study was to evaluate the effects of TPU (Therapeutic Pulsed Ultrasound) with gold nanoparticles (GNP) on oxidative stress parameters and the expression of pro-inflammatory molecules after traumatic muscle injury. MATERIALS AND METHODS Animals...

Background and Aims: Gold nanoparticles have potential applications in the areas of medicine, target drug delivery, cancer diagnosis and therapy, electronic, etc. Recently, biological system is considered as an environmental friendly method for synthesis of stable nanoparticles. Methods: We demonstrated a biological system for formation of stable gold nanoparticle by using Cupriavidus necator w...

The use of gold nanoparticle as an anti-infective agent has been proposed for years[1]. However, many reports mention for its ability counteracting bacteria. Its property against virus has never been systematically evaluated. Here, the authors performed a preliminary in vitro study to assess the effect of gold nanoparticle on viral load of hepatitis C virus (HCV). The standard gold nanoparticle...

BACKGROUND In medicine, there is limited knowledge on the toxicity of nanoparticles. In medicine, there has been limited knowledge on the effect of nanoparticles on the white blood cell. OBJECTIVE To evaluate the effect of gold nanoparticle on the microscopic morphology of white blood cell. SETTING Chulalongkorn Univesity, Bangkok, Thailand. METHOD This study was performed as an experimen...

The superatom model for nanoparticle structure is shown to be inadequate for the prediction of the thermodynamic stability of gold nanoparticles. The observed large HOMO-LUMO gaps for stable nanoparticles predicted by this model are, for sulfur-stabilized gold nanoparticles, attributed to covalent interactions of the metal with thiyl adsorbate radicals rather than ionic interactions with thiola...

We report a new self-assembly pathway that leads to supported and hierarchically organized gold nanoparticle mesostructure arrays on solid substrates such as glass slide, thermal oxide, photopolymer film, and mica. Using the nanoparticle micelle as a building block, hierarchical gold nanoparticle mesostructure arrays were prepared by a hydrothermal nucleation and growth process through self-ass...