31 results about "Bufadienolide" patented technology

The invention relates to a novel bufadienolides compound and a preparation method and application thereof, and provides a bufadienolides compound having a general formula (I) or pharmaceutical acceptable salts as well as bufadienolides extract or medication composition containing the compound. The compound and the extract have effect for inhibiting tumour cell activity and application to preparation of anti-tumour drugs. The invention also provides the preparation method applicable for industrial production of the compound and the extract.

The present invention provides a class of bufadienolide derivatives representing by the following formula I or pharmaceutically acceptable salts thereof, the preparing process thereof, pharmaceutical composition comprising the same and the use thereof. The bufadienolide derivatives have inhibitory activities against human-derived tumor cell lines, and thus can be used as a drug for treating malignancies.

The reagent, pharmaceutical formulation, kit, and methods of the invention provides a new approach to treat refractory cancers using Na⁺/K⁺-ATPase inhibitors, such as cardiac glycosides, including bufadienolides or their corresponding aglycones (e.g., proscillaridin, scillaren, and scillarenin, etc.), especially in oral formulations and/or solid dosage forms containing more than 1 mg of active ingredients.

The invention discloses a method for detecting bufadienolide components in a Liushen pill. The method comprises the following steps: preparing a reference sample solution; preparing a test sample solution; and calculating the content through an HPLC assay determination method and a standard curve method. According to the invention, optimal chromatographic conditions such as mobile phase composition, a chromatographic column, an elution program, detection wavelength and column temperature are screened out through a large number of experiments, and the chromatographic conditions are optimized to obtain the optimal detection conditions. The detection method provided by the invention can realize quick, accurate and reliable determination, has high specificity and favorable reproducibility, can simultaneously detect 9 bufadienolide components in the Liushen pill, and can be used for quality control on the Liushen pill, thereby having important significance for drug quality control.

The invention discloses total bufadienolide solid lipid nanometer particle freeze-dried injection and a preparation method thereof and belongs to field of the solid lipid nanometer particle freeze-dried injection and the preparation method thereof. The invention firstly discloses a total bufadienolide solid lipid nanometer particle which comprises the following components: total bufadienolide, solid lipid, a lipid-soluble emulsifying agent, a water-soluble emulsifying agent and water for injection. The total bufadienolide solid lipid nanometer particle is added with a freeze-drying protective agent and then freeze-dried to obtain the total bufadienolide solid lipid nanometer particle freeze-dried injection. After the total bufadienolide solid lipid nanometer particle freeze-dried injection disclosed by the invention is redissolved, the measured particle size of the total bufadienolide solid lipid nanometer particle is 190nm to 250nm, the polydispersity index is 0.18 to 0.3, the encapsulation efficiency is 30% to 80%, the tumor cell targeting property of the total bufadienolide can be effectively improved, and toxic and side effects are alleviated.

The invention provides application of gamabufotalin and a salt compound thereof in preparation of a medicine for treating gynecological tumor. By comparing in vitro anti-cancer experiments of a bufadienolide extract and monomeric compounds, namely the gamabufotalin, cinobufagin, bufalin and bufotalin as well as hydrochlorides or sulfates of the four compounds to four gynecological tumors, namely human ovarian cancer cells A2780, human ovarian cancer cells SK-OV-3, human cervical carcinoma cells and human endometrial cancer cells, an experimental result shows that the gamabufotalin has stronger activity against gynecological tumor cells than the bufadienolide extract and the monomeric compounds, namely the cinobufagin, the bufalin and the bufotalin, and the hydrochloride or the sulfate of the gamabufotalin has stronger activity against gynecological tumor cells than the hydrochlorides or the sulfates of three compounds, namely the cinobufagin, the bufalin and the bufotalin. The gamabufotalin and the salt compound thereof provided by the invention have the advantages of clear components, controllable quality, strong anti-cancer activity, and small adverse reaction, and are expect to be developed into a novel anti-cancer drug.

The invention discloses a new application of venenum bufonis polypeptide as medicine penetration enhancers, including bufadienolide and the like. An in vitro Franz diffusion cell and an in vivo transdermal experiment test the penetration enhancement effect of the venenum bufonis polypeptide on the bufadienolide. An LC-MS/MS (Liquid Chromatogram-Mass Spectrometry/Mass Spectrometry) method carries out detection to discover that the penetration of six types of main bufadienolide in cavia procellus skins is increased by 36.99-91.13% after the venenum bufonis polypeptide is added. A von Frey filament stimulation method verifies that the venenum bufonis polypeptide can improve the anti-inflammatory and analgesic capability of the bufadienolide. After the venenum bufonis polypeptide is applied, 2% formalin is injected on the right rear foot of the cavia procellus, a test result indicates that the mechanical withdrawal threshold of the right rear foot of the cavia procellus added with the bufadienolide of the venenum bufonis polypeptide is obviously improved, and the mechanical withdrawal threshold is improved by 2-3 times after the formalin is injected for 30min. The venenum bufonis polypeptide can accelerate the penetration of sterene in the skin of the cavia procellus so as to enhance the anti-inflammatory and analgesic effect of the venenum bufonis polypeptide.

The invention provides a selective separation and purification method of bufadienolide compounds. Positively charged XCharge C18 column is used for developing a novel high-performance liquid chromatographic separation method with high selectivity based on that at a low pH value, ionic properties of amino acid modified bufadienolides are different from ionic properties of bufadienolides which are not modified with amino acid. According to the selective separation and purification method, a mobile phase contains no buffer salt, so that it is convenient for sample preparation postprocessing; a toad skin 98% ethanol extract product is subjected to reversion phase chromatography preparation separation so as to obtain a fraction; and two kinds of compounds, including eight compounds, are obtained via reversed phase chromatography preparation. The selective separation and purification method is capable of realizing high efficiency preparation of amino acid modified bufadienolides and bufadienolides which are not modified with amino acid; and the selective separation and purification method is capable of solving a problem of trailing in separation process of amino acid modified bufadienolides; and excellent peaks are observed, and excellent separation effect is achieved. The selective separation and purification method is used for high efficiency systematic separation of bufadienolides, and is capable of providing substance base and technical support for anticancer active research of bufadienolides and signal-component new drug development.

The invention provides application of a bufadienolide compound and a bufadienolide salt compound in preparing a medicine for treating gynecological tumor. Anti-cancer experiments of four gynecological tumor, namely human ovarian cancer cells (A2780), human ovarian cancer cells (SK-OV-3), human cervical carcinoma cells (SiHa) and human endometrial cancer cells (shikawa) are carried out in vitro through a bufadienolide extract and monomeric compounds, namely cinobufagin, bufalin, bufotalin and gamabufotalin as well as hydrochlorides or sulfates of the four monomeric compounds, and an experimental result shows that the bufadienolide extract, the monomeric compounds, namely the cinobufagin, the bufalin, the bufotalin and the gamabufotalin, and the hydrochlorides or the sulfates of the four monomeric compounds have strong inhibition effect on four gynecological tumor cells. The anti-cancer activity of the bufadienolide compound and the bufadienolide salt compound is stronger than that of a positive drug paclitaxel, and the bufadienolide compound and a bufadienolide salt compound have small adverse reaction and expect to be developed into a novel anti-cancer drug.

The invention discloses a use of a bufadienolide compound in preparing medicines for treating oral mucosal malignant tumors. Anti-cancer experiments of human tongue squamous cancer cells are carried out in vitro through a bufadienolide extract and monomeric compounds, namely gamabufalin, arenobufagin, telocinobufagin, bufotaline, cinobufagin, desacetylcinobufotalin, heloniogenin, resibufogenin, and cinobufotalin, and experimental results show that the bufadienolide compound has strong inhibition effect on tongue squamous cancer cells and compared with the bufadienolide extract and eight monomeric compounds, namely gamabufalin, arenobufagin, telocinobufagin, bufotaline, desacetylcinobufotalin, heloniogenin, resibufogenin, and cinobufotalin, cinobufagin has a stronger anti-tumor cell activity. The bufadienolide compound provided by the invention has clear components, controllable quality, strong anti-tumor activity and little adverse reaction and is expected to be developed into a novel anti oral mucosal malignant tumor medicine.

The invention belongs to the field of pharmaceutical preparation, and relates to a total bufadienolides solid lipid nanoparticle drug delivery system for injection and a preparation method thereof. Total bufadienolides solid lipid nanoparticles are composed of the components in parts by weight: 0.1-2 parts of total bufadienolides with therapeutically effective amount, 0.5-20 parts of a lipid material, 0.5-15 parts of a lipid soluble emulsifier, 0.5-10 parts of a water soluble emulsifier, 0.002-2.5 part of an antioxidant, 0.1-25 parts of sugar and a proper amount of water for injection. The total bufadienolides solid lipid nanoparticles for injection allow the total bufadienolides to be wrapped in a lipoid nucleus, increase the solubility of the total bufadienolides, reduce the irritation, avoid degradation or leakage of the drug, can achieve targeting effect, controlled release and other effects, and have the advantages of stable physical and chemical properties and the like.

The invention discloses a slow-release microsphere containing venenum bufonis lipoclastic substances as well as a preparation method and application of the slow-release microsphere. The slow-release microsphere is prepared from 0.5 to 30.6 percent of venenum bufonis lipoclastic substances and 69.4 to 99.5 percent of packing materials, wherein the venenum bufonis lipoclastic substances are venenum bufonis extracts using ethanol, ethyl acetate or dichloromethane as solvents, or are bufadienolide monomers obtained from the venenum bufonis lipoclastic substances, and the pakcing materials are preferably selected from polylactic acid or polylactic acid-glycolic acid copolymers. The venenum bufonis lipoclastic substance slow-release microsphere obtained by the invention has the advantages that the medicine loading capability and the encapsulation rate are high, the stability is good, the slow-release effect is obvious, the medicine toxicity can be reduced, the medicine irritation is reduced, the medicine effect time is prolonged, and the medicine administration times are decreased. Various modes such as intravenous injection, intramuscular injection, oral administration and the like are adopted for medicine administration, the slow-release microsphere can be directly used for treating tumor in the medical clinical aspect, or is used for treating various diseases through being matched with other traditional Chinese medicine; and in the veterinary clinical aspect, the slow-release microsphere can be used for treating inflammation or can be used for treating infectious diseases through the combined application with chemotherapy medicine.

The invention provides a hellebore petunidin space isomer compound and preparation and application thereof. The hellebore petunidin space isomer compound is prepared from the conventional Chinese medicinal toad skin by using macroporous resin and a two-dimensional preparation chromatographic separation technology. The compound is prepared by mainly comprising the following steps of: cutting the toad skin into pieces; extracting with ethanol; separating a total extract by using the macroporous resin to obtain a toad bufadienolides extract; and performing two-dimensional preparation chromatographic separation and purification to obtain the compound. An in-vitro experiment proves that the compound has a good tumor cell suppression effect.

The invention provides a method for detecting bufadienolide components of musk Tongxin dripping pills in rat plasma and application of the method, and particularly relates to a method for qualitatively and quantitatively detecting arenobufogenin, telocinobufagin, deacetylcinobufagin, bufalin and resibufogenin in the rat plasma by adopting ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). The method comprises the following specific steps: adding an internal standard substance into intragastric musk heart-dredging dropping pill rat plasma, and carrying out methanol protein precipitation; and the detection is carried out through UPLC-MS/MS. Wherein the detection limit of bufalin is 1.00 ng/mL, and the quantification limit of bufalin is 3.00 ng/mL; the detection limit of arenobufogenin, telocinobufagin and resibufogenin is 2.00 ng/mL, and the quantification limit is 6.00 ng/mL; the detection limit of the deacetylated cinobufagin is 3.00 ng/mL, and the quantification limit of the deacetylated cinobufagin is 9.00 ng/mL. According to the method, detection can be completed within 15 min, quantitative calculation is completed through the retention time and the peak area ratio of an MRM chromatogram in combination with a standard curve, operation is more convenient, interference of endogenous substances in plasma is reduced, and the method can be used for pharmacokinetic research of the musk Tongxin dripping pills.

The invention discloses the influence of an amino acid chain on the anti-tumor activity of toad skin compounds as well as the inhibitory effect of fractions of bufadienolide compounds having the amino acid chains on the growth of colon cancer HT-29 cells and gastric cancer HGC-27 cells. The bufadienolide compounds include a mixture of bufadienolide fractions having and having no amino acid chains as well as a bufadienolide No.1-11 fraction having the amino acid chain, wherein the bufadienolide No.1-11 fraction is separated by virtue of high performance liquid chromatography. In vitro cell experiments indicate that the bufadienolide compounds having the amino acid chains are more significant in inhibitory effect on the growth of colon cancer and gastric cancer than bufadienolide compounds having no the amino acid chains, and meanwhile, some bufadienolide fractions having the amino acid chains take an obvious inhibitory effect on colon cancer cell globules and gastric cancer cell globules; therefore, the bufadienolide fractions having the amino acid chains can be used for preparing medicines for treating the colon cancer and the gastric cancer.

The invention relates to a method for detecting the concentration of six bufadienolide components in a medicinal preparation containing toad skin in blood plasma or tissue. The method comprises the following steps: (1) preparing a stock solution, namely respectively dissolving resibufogenin, bufalin, cinobufagin, cinobufotalin, telocinobufagin and arenobufagin in a (50+/-5)% acetonitrile aqueous solution to prepare a standard stock solution; dissolving reserpine in a (50+/-5)% acetonitrile aqueous solution to prepare a reserpine stock solution; (2) preparing a working solution; (3) preparing ato-be-detected sample solution; (4) carrying out liquid chromatography separation on the to-be-detected sample solution obtained in the step (3); and carrying out mass spectrometric analysis on the sample subjected to liquid chromatography separation. In the detection process of the method, the chromatographic peak shape is excellent, a channel of each compound only has a unique target peak, theinterference of other effects such as solvent effects is avoided, and the method is easy to operate, rapid in analysis, high in specificity and high in separation degree.

The invention provides a method for detecting six complex bufadienolide components in a medicinal material preparation containing toad skin. The method adopts high performance liquid chromatography tandem mass spectrometry detection, and comprises the following steps: (1) preparing a stock solution: respectively dissolving resibufogenin, bufalin, cinobufagin, cinobufotalin, telocinobufagin and arenobufagin in an acetonitrile aqueous solution to prepare a standard stock solution; (2) preparing a standard curve solution; (3) preparing a to-be-detected sample solution; (4) carrying out liquid chromatography separation on the to-be-detected sample solution obtained in the step (3); and carrying out mass spectrometric analysis on the sample subjected to liquid chromatography separation. In thedetection process of the method, the chromatographic peak shape is excellent, and a channel of each compound only has a unique target peak, so that interference of other effects such as solvent effects is avoided; and and the method is easy to operate, rapid in analysis, high in specificity and high in separation degree.