39results about How to "Strong analgesic activity" patented technology

The present invention belongs to the field of biomedicine technology. Chinese hard tick neuropeptide is a kind of single-stranded small peptide obtained from the ganglion of Chinese hard tick and with molecular weight of 1005.22 dalton, isoelectric point of 8.59, and the first order whole sequence structure of NH2-LVVYPWTK-COOH. It is prepared through adhering Chinese hard tick to the bottom of watch glass and on ice for 20 min, cutting along back side to eliminate ganglion, homogenizing, centrifuging and eliminate precipitate, filtering with membrane, and twice reverse high efficiency liquid phase chromatographic separation and purification. The Chinese hard tick neuropeptide has powerful analgetic activity, and may be used as analgetic medicine.

The invention discloses seven alpha type conotoxin peptides and applications thereof. The peptide I has an amino acid sequence shown as the sequence 7 in a sequence table, and the last amino acid residue is amidated; the peptide II has an amino acid sequence shown as the sequence 8 in the sequence table, and the last amino acid residue is amidated; the peptide III has an amino acid sequence shownas the sequence 9 in the sequence table, and the last amino acid residue is amidated; the peptide IV has an amino acid sequence shown as the sequence 10 in the sequence table, and the last amino acidresidue is amidated; the peptide V has an amino acid sequence shown as the sequence 11 in the sequence table, and the last amino acid residue is amidated; the peptide VI has an amino acid sequence shown as the sequence 12 in the sequence table, and the last amino acid residue is amidated; and the peptide VII has an amino acid sequence shown as the sequence 13 in the sequence table. Proved by determination of activity, the seven peptides shown as a general formula I have an analgesic effect, wherein alpha type conotoxin peptides T-1, T-2, T-3 and T-4 have remarkable analgesic activity, and thealpha type conotoxin peptides T5-T7 also have remarkable analgesic activity, and the application value on the aspect of analgesia is achieved.

The invention belongs to the field of traditional Chinese medicines, and particularly relates to a traditional Chinese medicine composition for treating hemorrhagic haemorrhoids as well as a preparation method and an application of the traditional Chinese medicine composition. The traditional Chinese medicine composition for treating hemorrhagic haemorrhoids provided by the invention comprises the following components in parts by weight: 10 parts of mint, 15 parts of coptis chinensis, 6 parts of asarum, 10 parts of radix angelicae dahuricae, 10 parts of rhubarb, 6 parts of fructus arctii, 20 parts of scrophularia ningpoensis, 17 parts of flos carthami, 10 parts of fructus forsythia, 13 parts of dandelion, 15 parts of honeysuckle, 30 parts of rhizoma atractylodis macrocephalae, 6 parts of clove and 10 parts of fructus cnidii. The traditional Chinese medicine composition has a good treatment effect on hemorrhagic haemorrhoids, and has significant clinical promotional value.

The invention discloses a method for preparing analgesic polypeptide from silkworms and belongs to the field of gene engineering. The preparation method comprises steps as follows: a conotoxin omega-MVIIA gene sequence is optimized according to BmNPV (Bombyx mori Nucleopolyhedrovirus) codon usage frequency, genes obtained after chemical synthesis are linked to a donor plasmid pFastBacDual and introduced to EGFP (enhanced green fluorescent protein) genes, and a recombinant donor plasmid pFBD-MVIIA / EGFP is established. MVIIA / EGFP is transposed to BmNPV with a Bac-to-Bac method, and a recombinant virus vBmMVIIA / EGFP is formed. DNA of the recombinant virus is transfected to cells of the silkworms, BV particles are obtained and injected into the silkworms at 200 pfu after the titer of the BV particles is tested by the aid of green fluorescence, and blood of the silkworms is collected after five days of transfection. Acetic-acid-induced mouse writhing experiments show that the blood of the silkworms infected with expressed conotoxin omega-MVIIA has remarkable analgesic activity, and the number of the average writhing times is only 3.55 and is remarkably higher than 37.30 in a control group of mice injected with normal saline. A new method is provided for expression of conotoxin omega-MVIIA with analgesic activity, and has potential application value.

The invention discloses a medical use of (S)-3-fluoro-2-(4-isobutyl phenyl) propionic acid. Further, the (S)-3-fluoro-2-(4-isobutyl phenyl) propionic acid can be used for preparing analgesic and anti-inflammatory or anti-tumor medicaments containing the (S)-3-fluoro-2-(4-isobutyl phenyl) propionic acid or pharmaceutical acceptable salts thereof.

The invention discloses a preparation method of a conotoxin variant GMVIIA with analgesic activity and belongs to the field of gene engineering. The preparation method comprises steps as follows: the gene sequence of the conotoxin variant GMVIIA is optimized according to the use frequency of Escherichia coli codons, a prokaryotic expression vector, namely, a pET-32a vector, is connected after chemical synthesis, then a recombinant plasmid is introduced into an Escherichia coli Origami (DE3) strain, and efficient soluble expression of recombinant protein Trx-GMVIIA is realized after IPTG induction; the recombinant protein Trx-GMVIIA is separated and purified with the nickel ion affinity chromatography; the recombinant protein Trx-GMVIIA is cut with enterokinase to release GMVIIA, Trx labels are removed with the nickel ion affinity chromatography, and the conotoxin variant GMVIIA is obtained. The mouse acetic acid writhing method proves that the prepared conotoxin variant GMVIIA has significant analgesic activity and has potential application value in the analgesic field.

The invention discloses alpha-conus polypeptides and use thereof. The invention provides seven polypeptides: a polypeptide I of which the amino acid sequence is represented by a sequence 7 in a sequence table and in which the last amino acid residue is amidated; a polypeptide II of which the amino acid sequence is represented by a sequence 8 in the sequence table and in which the last amino acid residue is amidated; a polypeptide III of which the amino acid sequence is represented by a sequence 9 in the sequence table and in which the last amino acid residue is amidated; a polypeptide IV of which the amino acid sequence is represented by a sequence 10 in the sequence table and in which the last amino acid residue is amidated; a polypeptide V of which the amino acid sequence is representedby a sequence 11 in the sequence table and in which the last amino acid residue is amidated; a polypeptide vI of which the amino acid sequence is represented by a sequence 12in the sequence table andin which the last amino acid residue is amidated; and a polypeptide VII of which the amino acid sequence is represented by a sequence 13 in the sequence table and in which the last amino acid residueis amidated. The result of activity tests, the seven polypeptides of the general formula (I) have pain relieving effect, alpha-conus polypeptides T-1, T-2, T-3 and T-4 have obvious pain-relieving activity, and the alpha-conus polypeptides T-5, T-6 and T-7 also have obvious pain-relieving effect, and the alpha-conus polypeptides have application values in pain-reliving aspect.

The invention relates to a goosegrass extract and a preparation method thereof. The extract is widely used in medicines and health products for analgesia, improvement of learning and memory functions, prevention or treatment of Alzheimer's disease. The extract used in the invention has extensive and cheap plant resources, and its preparation process is simple and easy for large-scale production.

The invention relates to preparation of a Scolopendra mutilans analgesic peptide precursor protein Ssm-A and products thereof (Ssm-A1 and Ssm-A2). The Scolopendra mutilans analgesic peptides (Ssm-A1 and Ssm-A2) have the beneficial characteristics of simple structure and special activity. The Scolopendra mutilans analgesic peptides (Ssm-A1 and Ssm-A2) can be separated and purified from Scolopendra mutilans venom. The invention also relates to application of the Scolopendra mutilans analgesic peptides (Ssm-A1 and Ssm-A2); and the Scolopendra mutilans analgesic peptides (Ssm-A1 and Ssm-A2) have analgesic effect on pains caused by multiple factors, and can be used for preparing analgesic drugs.