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338 results about "Steroid hormone" patented technology

A steroid hormone is a steroid that acts as a hormone. Steroid hormones can be grouped into two classes: corticosteroids (typically made in the adrenal cortex, hence cortico-) and sex steroids (typically made in the gonads or placenta). Within those two classes are five types according to the receptors to which they bind: glucocorticoids, mineralocorticoids (corticosteroids), androgens, estrogens, and progestogens (sex steroids). Vitamin D derivatives are a sixth closely related hormone system with homologous receptors. They have some of the characteristics of true steroids as receptor ligands.

Monolithic column, preparation method and application thereof

The invention discloses a monolithic column, a preparation method and a application thereof. The preparation method comprises the following steps: 1) polymeric monomer, pore-foaming agent, initiator and cuprous bromide are mixed together and then added with catalyst ligand after being deoxidized; the mixture is put into a chromatographic column tube to react in a sealing way; after the reaction, the chromatographic column tube is connected with a high pressure transfer pump, and the soluble substances such as the pore-foaming agent and the like are rinsed and removed by organic solvent, so that a monolithic column with a three-dimensional continuous skeleton structure is obtained; 2) the mixture of the organic solution, catalyst, catalyst ligand and antioxidant of the functional monomer is injected into the monolithic column, and bromine group remained on the surface of the column body initiates the surface grafting polymerization reaction of vinyl monomer. The method leads polymerization reaction to be carried out at the room temperature, so as to greatly solves the problems of inhomogeneous column body structure, volume contraction and the like caused by high polymerization temperature. Compared with the traditional monolithic column, the obtained monolithic column has obviously different structure, thus being applicable to separating biological macromolecules such as steroid hormone drugs, protein or the like.
Owner:INST OF CHEM CHINESE ACAD OF SCI

Temperature-sensitive in-situ gel preparation composition for anticular injection and preparation method thereof

The invention relates to a temperature-sensitive in-situ gel preparation composition for intra-articular injection and a preparation method thereof, and belongs to the field of medicine preparations. The preparation method comprises the following steps: preparing diclofenac sodium-carrying sodium alginate microspheres by combining a microsphere technology with a temperature-sensitive gel technology, and then carrying the medicine-carrying microspheres in a chitosan/beta-sodium glycerophosphate temperature-sensitive in-situ gel system to obtain a diclofenac sodium in-situ gel preparation composition. The composition is in a liquid state at a room temperature, capable of being converted to a semi-solid gel at a body temperature and forming a medicine storeroom at a medication part after being partially injected to enter an articular cavity, and beneficial to slowly releasing the medicine, prolonging the time of staying at the injection part, of the medicine, and enhancing the efficacy. The composition disclosed by the invention can be used for treating arthritis diseases of rheumatism, rheumatoid arthritis, osteoarthritis, synovitis and the like, as well as applicable to both diclofenac sodium and other arthritis treatment medicines of non-steroidal anti-inflammatory medicines, steroid hormone medicines, biological preparations and the like.
Owner:CHINA PHARM UNIV

Method for simultaneously detecting 13 kinds of steroid hormones in serum

InactiveCN110187043ADetection fitImprove efficiencyComponent separation11-Desoxycortisol11-Deoxycorticosterone
The invention provides a method for simultaneously detecting 13 kinds of steroid hormones in serum. The method includes the following steps: a to-be-tested serum sample is mixed with an internal standard solution, a detection liquid is obtained by liquid-liquid extraction, and detection is performed by ultra-high-performance liquid chromatography-tandem mass spectrometry; liquid chromatography conditions are that: a mobile phase A is a formic acid aqueous solution of 0.1%, and a mobile phase B is a formic acid methanol solution of 0.1%; mass spectrometry conditions are that: a positive ion mode employs a multi-reaction monitoring mass spectrometry scanning mode; and the 13 kinds of steroid hormones include pregnenolone, progesterone, 17-hydroxypregnenolone, 17[alpha]-hydroxyprogesterone, 11[alpha]-hydroxyprogesterone, 21-deoxycortisol, 11-deoxycorticosterone, corticosterone, cortisol, 11-deoxycortisol, cortisone, aldosterone, and estrone. The method simultaneously detects the 13 kindsof steroid hormones with the detection time of only 6 minutes, and is easy to operate and takes less time; the sensitivity is high, the accuracy is good, the specificity is strong, a detection range is wide, and an application prospect in medical and biochemical detection fields is broad.
Owner:SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES

Preparation method for hydroxylation of 11 alpha of important intermediate of steroidal hormone substance

The invention provides a preparation method for hydroxylation of 11 alpha of an important intermediate of a steroidal hormone substance, and aims to solve the problems that the conversion rate is low and the environment is polluted when a microorganism is used for converting steroidal C11 alpha for hydroxylation in the prior art. The preparation method comprises the following steps: strain breeding, wherein a strain of ochratoxin or rhizopus nigricans is inoculated to a corresponding seed medium for cultivation; substrate emulsification, wherein a substrate selected from one of 17-alpha hydroxyl progesterone, 4-androstenedione or 16,17-alpha epoxy progesterone is subjected to emulsification treatment under the action of a surfactant; fermented cultivation, wherein the ochratoxin or rhizopus nigricans is inoculated to a fermented medium to be cultivated for a period of time, and then one of emulsion liquids of sterilized 17-alpha hydroxyl progesterone, 4-androstenedione or 16,17-alpha epoxy progesterone is added for performing continuous fermented cultivation; extracting a finished product. The method has the advantages of high conversion rate, little pollution, environmental protection, low pressure and the like.
Owner:HEBEI ZHONGSHENG BIOTECH
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