131 results about "Histamine" patented technology

The invention relates to the technical field of traditional Chinese medicines, in particular to a traditional Chinese medicine composition for treating rhinitis. The traditional Chinese medicine composition comprises platycodon grandiflorum, semen armeniacae amarae, citrus chachiensis hortorum, fructus aurantii, aster, ephedra, radices trichosanthis, thunberg fritillary bulb, liquorice and loquat leaves. The traditional Chinese medicine composition can be used for remarkably relieving sneezing symptoms caused by allergic rhinitis, reducing histamine and specific IgE levels in serum and improving the pathological change degree of nasal mucosa tissues, and has a wide application prospect.

The invention relates to an SERS (Surface Enhanced Raman Scattering) active nano composite material for detecting trace histamine in tears, SERS sensing test paper as well as a preparation method and application, and belongs to the field of biosensing and spectral analysis. At least one of the problems of low detection sensitivity, poor anti-pollution capacity, low selectivity, incapability of realizing on-site rapid and instant analysis and the like of trace histamine in tears in the prior art is solved. The SERS active nano composite material is of a core-shell structure, and comprises a noble metal nano particle core, the surface of the core is coated with the hollow zeolite imidazate skeleton-67 shell layer, namely a ZIF-67 shell layer of a hollow structure; the Raman reporter molecule is fixed on the surface of the noble metal nanoparticle core. According to the invention, the detection sensitivity, anti-pollution capability and selectivity of trace histamine in tears are improved, and non-invasive rapid detection is realized.

The invention discloses application of bifidobacterium longum subsp. Infantis CCFM1269 in preparation of a product for relieving lactoglobulin allergy, and belongs to the technical field of microorganisms. The bifidobacterium longum subsp. Infantis CCFM1269 provided by the invention can relieve food allergy, and the food allergy can be relieved specifically as follows: (1) allergy symptom score and diarrhea occurrence rate can be relieved, and anus temperature and immune organ index can be recovered; (2) the immune response is regulated, the levels of histamine, total IgE, IgG1, beta-lactoglobulin specific IgE and proinflammatory factors IL-4 and IL-17A in serum are reduced, the levels of IFN-gamma and IL-10 are improved, and the immune balance is recovered; (3) inflammation of lung and jejunum tissues is relieved; (4) improving the oxidative stress state; (5) the intestinal barrier function is enhanced; and (6) recovering the diversity of intestinal flora, and adjusting the relative abundance of key bacteria genus such as Alloprevotella and the like.

Described herein are compositions and methods for treating or preventing skin or ocular surface disorders, such as those associated with bacterial and / or parasitic infections. Bacterial and / or parasitic infections include mites (e.g., Demodex), helminths, protozoa (e.g., amebas (e.g., Acanthamoeba or Cryptosporidiosis)), onchocerciasis, lice, scabies, nematodes, or chlamydia. The compositions and methods include compounds that exhibit immunological activity, keratolytic activity, antihistamine activity, anti-inflammatory activity, and / or other desirable activities. Topical administration of the compositions to the eyelid margin or surrounding area provides therapeutic benefit to patients with ocular surface disorders.

This invention relates to the crystal form of vonorazine pyroglutamate and its preparation method. The vonorazine pyroglutamate crystal form obtained by this invention not only has good solubility but also excellent storage stability; in vitro activity experiments show that crystal form I of this invention is effective against H+. + K + The inhibitory effect of ATPase is comparable to that of TAK-438; animal experiments show that the crystal form of the present invention, when administered intravenously, can significantly inhibit histamine-induced gastric acid secretion in rats, and can exert its pharmacological effect faster than that of TAK-438 administered duodenally.

The invention belongs to the technical field of medicine detection, and particularly relates to an LCMS (Liquid Chromatography Mass Spectrometry) detection method for histamine in prednisolone. Respectively injecting the reference solution, the test solution and the blank solution into an LCMS (Liquid Chromatography Mass Spectrometer), recording a spectrogram, and calculating the content of histamine in prednisolone by adopting an external standard method; wherein the detection condition of the LCMS comprises a mobile phase, and the mobile phase adopts acetonitrile as a mobile phase A and a 10mM ammonium formate aqueous solution containing 0.1 vol% of formic acid as a mobile phase B. The method is good in reproducibility and stability and high in precision.

The invention belongs to the technical field of food safety detection, and particularly relates to a histamine molecular imprinting electrochemical sensor based on a carbon-based nano composite material and a preparation method and application of the histamine molecular imprinting electrochemical sensor. Aiming at the problems of poor selectivity, high detection limit or complicated operation and the like of the existing histamine detection technology, a Co3O4 / N-HCS (cobaltosic oxide / nitrogen-doped hollow carbon sphere) composite material is prepared by adopting a solvothermal method, o-phenylenediamine (o-PD) is taken as a functional monomer, a molecularly imprinted polymer membrane (MIP) is constructed on the surface of a glassy carbon electrode (GCE) by adopting an electropolymerization method, and the histamine detection electrode is prepared. The MIP / Co3O4 / N-HCS / GCE sensor with specific recognition sites on histamine is formed. The sensor has high selectivity, high sensitivity and good stability, is simple and convenient to operate and rapid in detection, can efficiently realize accurate detection of histamine in food, and is suitable for safety monitoring scenes of various foods such as fermented food, aquatic products and dairy products.

The application belongs to the technical field of fluorescent nanomaterials, and provides nitrogen-doped carbon dots, a preparation method thereof and application of the nitrogen-doped carbon dots in colorimetric / fluorescent dual-mode visual detection of pH and histamine, to solve the problem that regular colorimetric signals of current carbon dots are difficult to achieve, which limits the application of the carbon dots in biomedicine and photoelectric devices. The nitrogen-doped fluorescent carbon dots are synthesized by one-step hydrothermal reaction of o-phenylenediamine and 2,6-pyridinedicarboxylic acid, water and hydrochloric acid. The preparation method is simple and fast, the synthesized carbon dots have good water solubility and biocompatibility, stable optical properties, high fluorescence quantum yield, can quickly and visually detect intracellular pH and histamine in food spoilage process, have excellent selectivity and anti-interference ability, fast response speed, high sensitivity, and can realize on-site and instant detection by means of a smart phone and a test strip.

The present invention relates to a bispecific anti-tumor antigen / anti-HSG antibody having screened light and heavy chain variable domains, which is capable of improving the pre-targeting of tumors for the specific delivery of therapeutic or diagnostic agents. The antibodies have a significant affinity for tumor antigens and stay at desired sites for a sufficient time. Antibodies that do not bind to the antigen can be rapidly cleared from the body, minimizing exposure of normal tissue. A humanized anti-HSG antibody is bound to each of a group containing histamine-succinyl-glycine (HSG) and a tumor antigen with high affinity. The bispecific antibodies can be further Fc silenced, resulting in additional properties, such as reduced binding to Fc [gamma] R and FcRn, thereby modulating effector function and regulating half-life. These antibodies are useful in the diagnosis and treatment of subjects suffering from malignancies.

The invention discloses a near-infrared ratio type fluorescent probe for rapidly and reversibly detecting histamine (HA), a preparation method of the fluorescent probe and application of the fluorescent probe in dynamic cell imaging, and belongs to the technical field of fluorescence imaging and biosensing. The preparation method comprises the following specific steps: synthesizing aza-BODIPY molecules (1a-1d, 2a-2d) with different halogenations, and meanwhile, connecting the aza-BODIPY molecules with hydroxyl groups at 3 and 5 sites with a hydrophilic PEG (Polyethylene Glycol) fragment and halogen to obtain an HA probe HAPCyto with good water solubility; in addition, the hydroxyl aza-BODIPY molecules are continuously subjected to substitution, halogenation and hydrolysis reaction to obtain carboxyl-containing aza-BODIPY molecules, then the aza-BODIPY molecules are subjected to amidation reaction by utilizing the site, and different organic fragments are respectively connected to obtain a cell membrane targeted HA probe HAPPM, a golgi apparatus targeted HA probe HAPGA and a HaloTag HA fluorescent probe HAPHaloTag. When HA exists in a solution, the developed probe can realize rapid reversible detection of the near-infrared ratio of histamine, also shows good reversible property in mast cells, and can realize dynamic monitoring of histamine in cells.

[Problem] To provide a substance having an activity of antagonizing the binding of histamine to histamine-H3 receptor, or having an activity of inhibiting the homeostatic activity of histamine-H3 receptor. [Means for Solution] A compound of the following formula (I) is provided: [wherein X, Y, Z and W each independently represent a methine group optionally having 1 or 2 substituents, or a nitrogen atom (provided that a case where all of X, Y, Z and W are an optionallysubstituted methine group); A, B and D represent C(0)-, etc.; Q represents a methine group or a nitrogen atom; R represents an optionallysubstituted group of the following formula (II-1): (wherein R7 and R8 each independently represent a lower alkyl group, etc.)].

The application discloses a kind of composite plant extract and its application, skin external preparation.The raw material of the composite plant extract includes hemerocallis fulva flower and red clover, and the weight ratio of hemerocallis fulva flower and red clover is (1:5)~(5:1).The plant extract of hemerocallis fulva flower and red clover of the application can inhibit the release of histamine, thereby reducing the occurrence of inflammation and infection;The plant extract of the application cooperates synergistically, and compared with each plant alone, the histamine inhibition effect of the plant extract of the application is significantly improved;The plant extract of the application uses pure natural plant as raw material, and has low side effect and high safety;The plant raw material used in the application is widely planted in China, and the resource is easy to obtain, the price is cheap, and the cost is low.

The invention discloses a multi-copper oxidase mutant sourced from Psychrobacter sp. And capable of efficiently degrading biogenic amine and application of the multi-copper oxidase mutant. According to the multi-copper oxidase mutant, the 183rd site of an amino acid sequence shown in SEQ ID NO.1 is mutated into histidine from phenylalanine, the 221st site of the amino acid sequence shown in SEQ ID NO.1 is mutated into aspartic acid from asparagine, the 261st site of the amino acid sequence shown in SEQ ID NO.1 is mutated into glutamic acid from glutamine, and the 292nd site of the amino acid sequence shown in SEQ ID NO.2 is mutated into arginine from lysine. Compared with wild type multi-copper oxidase, the multi-copper oxidase mutant disclosed by the invention has a good degradation effect on tryptamine, phenylethylamine, putrescine, cadaverine, histamine, tyramine, spermidine and spermine, and the degradation rate on the spermidine and the spermine is increased to 100%, so that the multi-copper oxidase mutant has a good application prospect in food fermentation safety production.

An antihistamine compound having the structure of formula (I), a pharmaceutically acceptable salt thereof, a method for preparing the same, and use of the antihistamine compound having the structure of formula (I) and a pharmaceutically acceptable salt thereof in the treatment of diseases such as seasonal / perennial allergic rhinitis, allergic conjunctivitis, and urticaria. JPEG2025519827000061.jpg85170

To provide a method for treating animal protein and a pet food product containing the animal protein.SOLUTION: A method of treating one or more sources of proteins, the method comprising adding one or more base components to the source of proteins, wherein the treated source of proteins has a histamine level of less than about 300ppm is provided.SELECTED DRAWING: None

This invention provides an oligopeptide cyclic peptide and its applications. The cyclic peptide is obtained by truncating the linear Hst1 sequence to the shortest possible sequence that retains Hst1 activity. Then, a triazole ring-containing oligopeptide is prepared by a cycloaddition reaction under specific conditions targeting this shortest sequence. Its molecular weight is only 1 / 3 that of linear histamine, and its biological activity is 15 times that of linear histamine. To achieve the same activity, the cost of the oligopeptide cyclic peptide is only 1 / 100 that of linear histamine, and the yield is significantly higher than that of cyclic peptides directly cyclized with amide bonds. It also exhibits significantly improved stability and resistance to biodegradation. The entire cyclization process of this oligopeptide cyclic peptide is mild, simple, and efficient, and can produce high-purity oligopeptide cyclic peptides. It can be used to prepare anti-aging and repairing skincare products, health products, or pharmaceuticals, and has excellent prospects for large-scale industrialization.

The invention discloses a high-performance biosensor based on a g-C3N4 / TiO2 heterojunction as well as a preparation method and application of the high-performance biosensor, and belongs to the technical field of biosensing and food safety detection. The sensor is constructed by taking a glassy carbon electrode as a substrate and sequentially modifying a g-C3N4 / TiO2 heterojunction composite material and diamine oxidase (DAO). The g-C3N4 / TiO2 heterojunction is prepared through a one-step calcination method, a type II p-n junction structure is formed, photo-generated charge separation and interface electron transfer are effectively promoted, and the conductivity, catalytic activity and enzyme immobilization capacity of the electrode are remarkably improved. The invention discloses a synergistic mechanism of heterojunction interface enhanced histamine selective adsorption and catalytic reaction through density functional theory calculation. The sensor shows excellent detection performance on histamine: the linearity is good in a range of 0.05-10 mM, and the detection limit is as low as 0.075 M; the selectivity is still higher than 93% in the presence of an interferent with ten times of concentration; when the method is applied to detection of actual samples of beef, mutton, fish and chicken, the adding standard recovery rate is 93.60%-101.8%, and the relative standard deviation is smaller than 5%. The sensor has the advantages of high sensitivity, good selectivity, strong anti-interference capability, good reproducibility and the like, and a reliable new method is provided for rapid and accurate screening of histamine in food.

The present application provides a rapid detection system for allergic conjunctivitis and its application. Specifically, the present application provides a rapid detection system for detecting allergic conjunctivitis, which comprises: (A) a subject user terminal; and (B) a background processing end. The rapid detection system of the present application can timely, efficiently and accurately evaluate the incidence and severity of allergic conjunctivitis based on the detection results of the levels of IgE and histamine in tears, realize the home detection of allergic conjunctivitis, reduce misdiagnosis and avoid the aggravation of allergic conjunctivitis due to medical delay, which is helpful to improve the medical efficiency and has a broad clinical application prospect.

The application provides application of an adenosine A2B receptor as a target in a medicine for preventing and / or treating itch, and belongs to the technical field of biological medicines. Based on previously reported single-cell RNA sequencing data of a mouse dorsal root ganglion (DRG), expression of genes encoding main ligand ion channels is detected, Adora2b highly expressed in Neuron_10 is detected, and it is indicated that Adora2b and a receptor (adenosine A2B receptor) of Adora2b can participate in regulating itch. Experiments prove that the activity of the adenosine A2B receptor can be effectively blocked to prevent a histamine-induced scratching behavior of a mouse, and it is indicated that the A2B receptor participates in histamine-induced itch sensation. The application also provides application of a reagent for inhibiting biological functions of the adenosine A2B receptor in preparation of a medicine for preventing and / or treating itch, and provides a new means for prevention and treatment of itch.

The present invention relates to a recombinant human diamine oxidase (DAO) with reduced glycosaminoglycan binding affinity, said DAO comprising at least one amino acid modification in the glycosaminoglycan (GAG)-binding domain. The present invention further relates to the use of DAO in the treatment of conditions associated with excess histamine, particularly in the treatment of chronic allergic diseases, more particularly in the treatment of anaphylaxis, anaphylactic shock, chronic urticaria, acute urticaria, asthma, hay fever, allergic rhinitis, allergic conjunctivitis, histamine poisoning, headache, atopic dermatitis, inflammatory diseases, mastocytosis, mast cell activation syndrome (MCAS), pre-eclampsia, hyperemesis gravidarum, preterm labor, peptic ulcer, acid reflux, pruritus, and sepsis.

The present invention relates to an aqueous pharmaceutical composition for injection comprising doxylamine or a physiologically acceptable salt thereof wherein the concentration of doxylamine is in the range of from 5 mg / ml to 25 mg / ml, based on the weight of doxylamine free base and based on the total volume of the composition; wherein the pH value of the composition is in the range of 6.0 to 7.0. The pharmaceutical composition disclosed by the invention has the effects and effects of sedation, hypnosis, histamine resistance, choline resistance, allergy resistance and the like.

The invention relates to a compound with Sigma-1 receptor (sigma 1 receptor) and Histamine 3 (H3) receptor double-target activity as shown in a general formula I or pharmaceutically acceptable salt thereof, a pharmaceutical composition thereof and application of the compound in preparation of drugs for preventing and treating pain-related diseases. The compound of the general formula I provided by the invention has relatively high affinity to a Sigma-1 receptor and an H3 receptor, can obviously improve neuropathic pain induced by paclitaxel, also shows good analgesic activity in an acetic acid writhing experiment, and has excellent safety.

The present invention belongs to the field of medicine and specifically relates to the use of a combination of astemizole and terfenadine in the preparation of a drug for treating gastric cancer. The present invention finds that the antihistamine drug terfenadine can enhance the inhibitory effect of astemizole on gastric cancer AGS and HGC27 cells, significantly inhibiting the proliferation of AGS and HGC27 gastric cancer cells. Furthermore, terfenadine and astemizole can inhibit the migration of gastric cancer cells, induce apoptosis of gastric cancer cells, and block the cell cycle. The effect of terfenadine and astemizole in inhibiting the proliferation of gastric cancer cells is superior to that of the commonly used clinical anticancer drug 5-fluorouracil (5-FU), and the present invention has good application prospects in the treatment of gastric cancer.

The invention discloses a dual-mode sensor based on a histamine aptamer H32 and application of the dual-mode sensor, and belongs to the technical field of food safety analysis and detection. The aptamer as shown in SEQ ID NO.1 is used as a recognition molecule of histamine, the stability is high, the preparation cost is low, and the aptamer has high affinity and high selectivity to histamine. According to the invention, dual-mode signal complementation is realized, ultraviolet and fluorescent dual channels cover a wide dynamic range of 3-30 [mu] M, the detection range is expanded compared with a single-mode detection range, and detection can be rapidly completed. The construction of the sensor provides a choice for aquatic product safety monitoring, and has certain application potential in the fields of aquatic product monitoring and food quality control.

The invention relates to the technical field of biological medicines, and particularly discloses an egg yolk antibody for resisting canine interleukin as well as a preparation method and application of the egg yolk antibody. The egg yolk antibody is prepared by taking immunocompetence antigen epitope peptide of canine interleukin-31 as an immunogen, the antigen epitope peptide is obtained by predicting key antigen epitopes of IL-31 through an Antigenic tool and performing series optimization, a coding gene of the antigen epitope peptide is optimized by an escherichia coli codon to construct a recombinant expression vector, and high-purity antigen is obtained by inducible expression and purification. A laying hen is immunized by the antigen, after basic immunization and two times of booster immunization, the egg yolk antibody is extracted from egg yolk and purified to obtain the egg yolk antibody, and the ELISA of the egg yolk antibody is obviously superior to that of an antibody prepared by commercial canine IL-31 protein immunization. The egg yolk antibody can be specifically combined with canine IL-31, the histamine level in serum of a canine with pruritus is remarkably reduced, the atopic dermatitis related pruritus symptoms are effectively relieved, an efficient and safe biological treatment preparation is provided for canine IL-31 mediated pruritus diseases, and the egg yolk antibody has wide clinical application prospects.

This invention discloses a strain of Maggi-Megaki yeast with amine-reducing and flavor-enhancing capabilities and its applications, belonging to the field of microbial fermentation technology. This invention screened a strain of Maggi-Megaki yeast Y21 from fermented soybean paste, which has the ability to degrade biogenic amines. This strain can completely degrade tryptamine, phenylethylamine, putrescine, cadaverine, spermidine, and spermine; simultaneously, it also has a strong degradation effect on histamine and tyramine, with degradation rates reaching 69.58% and 65.32%, respectively. Using the Maggi-Megaki yeast Y21 described in this invention for inoculation and fermentation can significantly reduce the content of various biogenic amines in fermented soybean paste under low-to-medium salt conditions, especially showing outstanding removal effects on histamine, tyramine, phenylethylamine, and polyamine biogenic amines, increasing the total amount of volatile flavor compounds, and is suitable for the safe production of low-salt fermented foods.

The present application relates to the technical field of wasabi paste, and particularly relates to a normal-temperature wasabi paste, a preparation method and application thereof. The wasabi paste is prepared from wasabi, trehalose, vegetable oil, tackifier, pea fiber powder, edible salt and water, and functional raw materials such as horseradish, lemon yellow, bright blue and edible spices are selectively added. The wasabi ferment of the present application can neutralize the pungent taste of the wasabi paste and improve the entry effect and nutritional effect of the paste, and the histamine content is low, so that the wasabi paste of this type is more beneficial to human health. Salt and vegetable oil are used to give the wasabi paste the effect of inhibiting spoilage. A stabilizer with effective bacteriostatic effect can also be added to further improve the storage effect of the wasabi paste. The wasabi paste prepared by the present application belongs to the normal-temperature sealed storage type, has good palatability and is beneficial to human health.

This invention discloses a molecularly imprinted paper-based microfluidic colorimetric sensor for detecting histamine, its preparation, and its application. The colorimetric sensor (MIP@MIL) is polymerized from a metal-organic framework (MIL-101) using surface molecular imprinting and dual-monomer imprinting techniques. MIP@MIL exhibits a histamine detection limit of 0.77 μM and a detection time of 12.5 min, demonstrating good selectivity. The mechanism involves histamine blocking the imprinted pores of MIP@MIL and acting on MIL-101, thereby weakening the catalytic oxidation process of the chromogenic agent 2,2'-azido-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS). Furthermore, histamine increases the repulsive force of MIP@MIL against ABTS, thus enabling colorimetric detection of histamine. To further improve practical applicability, MIP@MIL was loaded onto qualitative filter paper and further modified onto microfluidic paper-based chips (μPADs). Using a smartphone, rapid and accurate visual detection of histamine in food was achieved, demonstrating its potential for food freshness detection.

The invention provides a preparation process of an anti-allergic health food, and relates to the technical field of health food preparation. The production process of the anti-allergic health-care food comprises the following steps: preparing the following raw materials: herba cistanche, radix astragali, rhizoma polygonati, a bupleurum chinense leaf extract, a dandelion extract, honey and potassium sorbate, wherein the addition ratio of the bupleurum chinense leaf extract to the dandelion extract is 1: 2; cistanche deserticola, astragalus membranaceus and rhizoma polygonati are mixed, excessive water is added for soaking, reflux extraction and filtration are performed, filtrate is combined, and an extracting solution is obtained. By adding the bupleurum chinense leaf extract and the dandelion extract into an extracting solution of traditional Chinese medicinal materials such as astragalus membranaceus, the ratio of IgG1 / IgG2a can be effectively reduced, namely Th1 type immune response is relatively enhanced, Th2 type response is relatively weakened, allergen-specific IgE antibodies generated by B cells are correspondingly reduced, degranulation reaction and release of inflammatory mediators such as histamine are relieved, and the anti-inflammatory effect is achieved. The anaphylactic reaction is effectively relieved.