Journal of Innovative Optical Health Sciences
Current impact factor: 0.93
Impact Factor Rankings
|2016 Impact Factor||Available summer 2017|
|2013 Impact Factor||0.933|
|2012 Impact Factor||0.632|
|Other titles||Innovative optical health sciences, JIOHS|
|Document type||Journal / Magazine / Newspaper|
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Publications in this journal
- SourceAvailable from: worldscientific.com[Show abstract] [Hide abstract]
ABSTRACT: Protein-directed fluorescent Au nanoclusters have been widely studied owing to their potential applications in sensing, imaging, and drug and gene delivery. However, the use of nanoclusters in drug delivery is limited by low cellular uptake. In this study, human serum albumin-directed Au nanoclusters served as building blocks to obtain protein nanoparticles by desolvation. The nanoparticles had a decent quantum yield (QY), high colloidal stability and low cytotoxicity, and they could be readily conjugated with biological molecules. The cellular uptake of the Au nanoclusters and nanocluster-loaded protein nanoparticles were studied by confocal fluorescence microscopy. Agglomeration of the protein-directed Au nanoclusters into 50–150-nm nanoparticles dramatically increased the cellular uptake.
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ABSTRACT: At present, gold nanoparticles (GNPs) are widely used in biomedical applications such as cancer diagnostics and therapy. Accordingly, the potential toxicity hazards of these nanomaterials and human safety concerns are gaining significant attention. Here, we report the effects of prolonged peroral administration of gold nanoparticles with different sizes (2 nm, 15 nm and 50 nm) on morphological changes in lymphoid organs and indicators of peripheral blood of laboratory animals. The experiment was conducted on 24 white mongrel male rats weighing 180-220 g, gold nanospheres sizes 2, 15 and 50 nm were administered orally for 15 days at a dosage of 190 µg / kg of animal body weight. The gold nanoparticles were conjugated with polyethylene glycol to increase their biocompatibility and bioavailability. The size-dependent decrease of the number of neutrophils and lymphocytes was noted in the study of peripheral blood, especially pronounced after administration of gold nanoparticles with size of 50 nm. The stimulation of myelocytic germ of hematopoiesis was recorded at morphological study of the bone marrow. The signs of strengthening of the processes of differentiation and maturation of cellular elements were found in lymph nodes, which were showed as the increasing number of immunoblasts and large lymphocytes. The quantitative changes of cellular component morphology of lymphoid organs due to activation of migration, proliferation and differentiation of immune cells indicate the presence of immunostimulation effect of gold nanoparticles.
Article: Laser Facilitates Vaccination
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ABSTRACT: The content of berberine hydrochloride (BH) in compound berberine tablets (CBTs) is subject to strict requirements. Its content is usually measured based on chemical analysis. In this paper, the fluorescence spectral imaging method was used to study the relative content of BH from a physics perspective. By comparing the relative fluorescence intensity of self-made CBTs with different mass percentages of BH, a linear positive relationship was observed between the BH content and the relative fluorescence intensity, and accordingly the quality of CBTs of different brands was evaluated. The results indicate that the fluorescence spectral imaging method can be a simple, fast and nondestructive semi-quantitative analysis method to determine the content of BH in CBTs, and this method has great potential in the quality control of CBTs.
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