Halide-free glucosamine sulfate compositions and methods of preparation
申请人:JFC Technolries, LLC
公开号:US07388001B1
公开(公告)日:2008-06-17
Glucosamine sulfate having a purity of at least about 99 wt. %, and a maximum halide content of about 0.01 wt. %. Preferably, the glucosamine sulfate is stabilized by coating it with at least one pharmaceutically acceptable polymer comprising a water-soluble, water-immiscible and/or water-swellable homopolymer and/or copolymer. Suitable polymers include carboxypolymethylene homopolymers and copolymers; polyethylene glycol homopolymers and copolymers; polypropylene glycol homopolymers and copolymers; ethylcellulose; povidone homopolymers and copolymers; polyacrylic acid homopolymers and copolymers; polyacrylamide homopolymers and copolymers; polysaccharides; and mixtures of two or more of the foregoing polymers. The resultant coated glucosamine sulfate composition will be stable at ambient temperatures and upon exposure to the atmosphere.
Glucosamine sulfate metal chloride compositions and process of preparing
申请人:Jame Fine Chemicals, Inc.
公开号:US05902801A1
公开(公告)日:1999-05-11
Glucosamine compositions comprising the compounds glucosamine sulfate metal chloride, wherein the metal, i.e. the cation, is lithium, sodium, magnesium, zinc or manganese. The compounds have purity levels of at least about 97%, with water present in a maximum amount of about 10 wt. %, based on the weight of the composition. The compounds are prepared by contacting glucosamine hydrochloride with the metal sulfate in the presence of water to form an aqueous solution of glucosamine sulfate metal chloride and thereafter freeze-drying the solution at a temperature and at a reduced pressure for such period of time that at least about 90 wt. % of the water is removed and decomposition of the compound glucosamine sulfate metal chloride is limited to a maximum of about 3%.
Glucosamine anchored cancer targeted nano-vesicular drug delivery system of doxorubicin
作者:Smita Pawar、Pradeep Vavia
DOI:10.3109/1061186x.2015.1055572
日期:2016.1.2
Background: Efficacy of an anticancer drug is challenged by severe adverse effects persuaded by the drug itself; hence designing a tumour targeted delivery system is chosen as an objective of this research work.Purpose: We propose, glucose transporter targeting ligand, i.e. synthesised N-lauryl glucosamine (NLG) anchored doxorubicin (DOX) in niosomal formulation.Methods: Synthesised NLG was incorporated into niosomal formulation of DOX using Span 60 as surfactant, cholesterol as membrane stabilizer and dicetyl phosphate (DCP) as stabilizer.Results: The formulation was stable with particle size of 1105nm, zeta potential -30 +/- 5mV and entrapment efficiency approximately 95%. DSC and XRD pattern of freeze-dried formulation demonstrated encapsulation of DOX in niosomal formulation. Cytotoxicity of targeted niosomal formulation (IC50=0.830ppm) was higher than non-targeted niosomal formulation (IC50=1.369ppm) against B6F10 melanoma cell lines. In vitro cellular internalization revealed that targeted niosomal formulation was internalised more efficiently with higher cellular retention by cancer cells compared to the non-targeted niosomal formulation and free DOX. In vitro receptor binding and docking study of targeted niosomal formulation had shown the comparative association potential with glucose receptor.Conclusion: NLG anchored niosomal formulation of DOX with enhanced cytotoxicity, internalization and receptor binding potential has implication in targeted cancer therapy.
OKADA, YOSHIHITO;SHIBATA, SHOJI;IKEKAWA, TETSURO;JAVELLANA, ANA M. J.;KAM+, PHYTOCHEMISTRY, 26,(1987) N 10, 2789-2796
作者:OKADA, YOSHIHITO、SHIBATA, SHOJI、IKEKAWA, TETSURO、JAVELLANA, ANA M. J.、KAM+
DOI:——
日期:——
WEARABLE ITEM FOR INCREASED APPLICATION OF NUTRIENTS
申请人:The Vitasken Venture Club
公开号:US20200338342A1
公开(公告)日:2020-10-29
A wearable item is formed of conductive fibers and non-conductive fibers. Encapsulated nutrients are placed on the non-conductive fibers. A voltage is placed on the conductive lines in order to induce an electric field so that the effective absorption rate of the nutrients through the skin of a user is increased.