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234 results about "Oxymatrine" patented technology

Oxymatrine (matrine oxide, matrine N-oxide, matrine 1-oxide) is one of many quinolizidine alkaloid compounds extracted from the root of Sophora flavescens, a Chinese herb. It is very similar in structure to matrine, which has one less oxygen atom. Oxymatrine has a variety of effects in vitro and in animal models, including protection against apoptosis, tumor and fibrotic tissue development, and inflammation. Furthermore, oxymatrine has been shown to decrease cardiac ischemia (decreased blood perfusion), myocardial injury, arrhythmias (irregular heartbeats), and improve heart failure by increasing cardiac function.

Microwave-assisted aqueous two-phase/reversed micelles extraction method of Sophora flavescens alkaloids

The invention discloses a microwave-assisted aqueous two-phase/reversed micelles extraction method of Sophora flavescens alkaloids. The method comprises the steps of extracting Radix Sophorae Flavescentis or Radix Sophorae Tonkinensis by use of microwave-assisted ethanol-ammonium sulfate aqueous two-phase system, in which Sophora flavescens alkaloids are partitioned between the two aqueous phases and extracted into the upper phase to complete primary purification; selectively extracting Sophora flavescens alkaloids by use of SDBS (sodium dodecyl benzene sulfonate)/isooctane/n-octanol reversed micelles system, to obtain Sophora flavescens alkaloids crude product with low impurity content; and performing separation and purification to obtain matrine, oxymatrine and sophoridine. The method combines reversed micelles extraction, microwave-assisted extraction and aqueous two-phase extraction technologies, to realize advantage complementation, simple method, high speed and efficiency, no pollution, low requirements for facilities, easy continuous production and scale-up. The extracted Sophora flavescens alkaloids have purity above 90.92% and yield up to 55.38 mg/g. The separated and purified matrine, oxymatrine and sophoridine have high purity above 94% and little organic solvent residue.
Owner:GUANGDONG PHARMA UNIV

Oxymatrine hepatic targeting nano drug delivery system and preparation method thereof

The invention relates to an oxymatrine hepatic targeting nano drug delivery system and a preparation method thereof. The oxymatrine hepatic targeting nano drug delivery system is prepared by the following steps of: with polyethylene glycol-polycaprolactone block polymer as a carrier, preparing polymer nanoparticles by adopting a film dispersion method, a reverse evaporation method or an organic solvent injection method, encapsulating oxymatrine into the polymer nanoparticles, then modifying a new glycoprotein or cyclic octapeptide ligand to be taken as a ligand on the surfaces of the nanoparticles, and constructing an anti-hepatic fibrosis nano targeting drug delivery system for hepatic stellate cells (HSCs). The nano drug delivery system has the advantages that particle size is 50-260nm, encapsulation efficiency is 18-42%, drug loading capacity is 2-12% and the surface of the nano drug delivery system is rich in new glycoprotein M6PHSA (mannose-6-phosphate human serum albumin) or cyclic octapeptide RGD (arg gly asp). The oxymatrine hepatic targeting nano drug delivery system provided by the invention can increase opportunities that nanoparticles enter the liver through blood circulation, is beneficial to targeting distribution of drugs at focus parts of the liver and is beneficial to absorption of drug-carrying nanoparticles at lesion parts of the liver and ingestion of HSCs, so that hepatic fibrosis treatment is enhanced.
Owner:NINGXIA MEDICAL UNIV
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