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339 results about "Allergic reaction" patented technology

Delivery catheter having imaging capabilities

The invention is a delivery catheter, e.g., a guide catheter, having an imaging element in proximity to the distal end of the catheter. Catheters of the invention are able to placement of the catheter in proximity to an ostium, thereby increasing the efficiency of contrast delivery while reducing the risk of ischemia due to blocked blood supply. The invention additionally assists in maintaining catheter position during delivery of a fluid from the catheter, resulting in better performance with less fluid. For example, a catheter of the invention can be used to produce improved fluoroscopic images with less overall contrast. This improvement reduces the risk of an allergic reaction to the contrast while decreasing the length of time for a procedure, i.e., because of a need to re-contrast.
Owner:PHILIPS IMAGE GUIDED THERAPY CORP

Anti-human IgE antibody and application thereof

The invention relates to the field of antibodies, in particular to an anti-human IgE antibody and application thereof. The CDR of a heavy chain variable region in the anti-human IgE antibody provided by the invention comprises a CDR-H1 of which the amino acid sequence is shown as SEQ ID No. 1 or SEQ ID No. 7, a CDR-H2 of which the amino acid sequence is shown as SEQ ID No. 2 or SEQ ID No. 8, and a CDR-H3 of which the amino acid sequence is shown as SEQ ID No. 3 or SEQ ID No. 9; the CDR of a light chain variable region in the anti-human IgE antibody comprises a CDR-L1 of which the amino acid sequence is as shown in SEQ ID No. 4 or SEQ ID No. 10, a CDR-L2 of which the amino acid sequence is as shown in SEQ ID No. 5 or SEQ ID No. 11, and a CDR-L3 of which the amino acid sequence is as shown in SEQ ID No. 6 or SEQ ID No. 12. The antibody provided by the invention is high in affinity and high in sensitivity, can detect human IgE with the concentration of 0.02 IU / mL, and has clinical diagnostic significance for identifying anaphylactic reaction.
Owner:SHANGHAI ADVANCED CLINICAL LABORATORY SCIENCE CO LTD +1

Whitening essence suitable for sensitive skin and preparation method thereof

The invention relates to the technical field of whitening essence, and discloses whitening essence suitable for sensitive skin and a preparation method thereof.The whitening essence suitable for sensitive skin is prepared from, by mass, 2%-3% of prinsepia utilis royle oil, 1%-2% of portulaca oleracea extract, 1.5% of camellia yunnanensis flower extract, 0.5% of panax notoginseng root extract, 3% or less of nicotinamide, 1% or less of 1, 2-propylene glycol and the balance deionized water. 1%-1.5% of 1, 2-hexanediol, 0.1%-0.3% of sodium hyaluronate and 60%-70% of deionized water. According to the whitening essence suitable for the sensitive skin and the preparation method of the whitening essence, through the synergistic combination of prinsepia utilis royle oil (barrier repair), purslane (anti-inflammatory), camellia japonica (tyrosinase inhibition) and pseudo-ginseng (microcirculation improvement), melanogenesis is inhibited through multiple channels, the sensitive skin is relieved synchronously, nicotinamide (3%) is compounded with the prinsepia utilis royle oil, and the skin whitening effect is achieved. The synergism of whitening and barrier repair is enhanced through a dual mechanism of promoting ceramide synthesis and inhibiting melanin transport, and the problems that a traditional whitening agent has different degrees of irritation, allergy phenomena such as skin redness, swelling and pain are easily caused by improper use, and a skin intolerance phenomenon exists are solved.
Owner:SHANGHAI MEIFEN BIOMEDICAL TECH CO LTD

Bifidobacterium longum subsp.infantis capable of relieving and preventing allergic rhinitis and application of bifidobacterium longum subsp.infantis

The invention discloses bifidobacterium longum subsp.infantis capable of relieving and preventing allergic rhinitis and application of the bifidobacterium longum subsp.infantis, and belongs to the technical field of microorganisms and the technical field of medicines. The bifidobacterium longum subsp. Infantis CCFM111 can relieve allergic reaction of allergic mice and relieve and prevent allergic diseases of perennial allergic rhinitis patients, and is specifically shown as follows: (1) weight loss and symptoms caused by allergy of the mice are relieved; lung inflammation infiltration is reduced; the OVA-sIgE level and the total IgE level of serum are reduced; the expression of a proinflammatory factor and an anti-inflammatory factor is regulated. (2) allergy symptoms and medication scores of patients are reduced; the asymptomatic day number proportion of the patient is increased; the serum dermatophagoides farinae and dermatophagoides farinae-sIgE level of patients is reduced; and the expression of cytokines in serum of a patient and nasal irrigation solution is regulated. Therefore, the bifidobacterium longum subsp. Infantis CCFM111 has a huge application prospect in preparation of products for preventing and / or treating allergic rhinitis.
Owner:JIANGNAN UNIV +1

Reusable rapid cooling ice compress device

InactiveCN119818279ATherapeutic coolingTherapeutic heatingMedicineDermal exposure
The invention relates to the technical field of cooling ice compress, and discloses a reusable rapid cooling ice compress device which comprises an ice compress bag. The two hook-and-loop fastener thorn surfaces are fixedly mounted at the two ends of the ice compress bag; the winding box is arranged at one end of the ice compress bag; and the two connecting boxes are symmetrically and fixedly mounted on the top surface of the winding box. The independent design of the ice compress bag enables the ice compress bag to be easily frozen and taken out for use at any time, self-care of a patient is facilitated, the use of the packing paper roll provides a sanitary and sterile barrier for the ice compress process, the comfort of the patient in the use process is ensured due to the soft and water-absorbing characteristics of the packing paper roll, and meanwhile, the use of the packing paper roll is facilitated. According to the ice compress bag, the ice compress bag can be prevented from being in direct contact with the skin of a patient, the risk of bacterial cross infection is reduced, possible skin irritation or anaphylaxis is prevented, it is ensured that ice compress is clean and sanitary each time due to the disposable use characteristic of the packing paper roll, and more secure use experience is provided for the patient.
Owner:AFFILIATED HOSPITAL OF NANTONG UNIV

Lactobacillus rhamnosus strain with antiallergic activity and preparation method thereof

The invention discloses a lactobacillus rhamnosus strain with antiallergic activity and a preparation method thereof, the strain is lactobacillus rhamnosus Lrn-PG-06, the classification name of the strain is Lactobacillus rhamnosus, the preservation number is CGMCC (China General Microbiological Culture Collection Center) No.3077, the preservation time is March 21, 2024, the preservation unit is China General Microbiological Culture Collection Center, the preservation number is CGMCC No.3077, and the preservation number is CGMCC No.3077. The address is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing. The lactobacillus rhamnosus Lrn-PG-06 strain is high in acid resistance, alkali resistance and cholate resistance, high in simulated gastrointestinal fluid resistance and high in oxidation resistance, has the advantage of resisting allergy, and solves the problems that at present, allergic diseases are mainly treated by drugs or are prevented from being in contact with allergens in the environment and food, but due to the fact that the drugs are large in toxic and side effects, the allergens cannot be in contact with the allergens in the environment and food. And allergens causing anaphylaxis are difficult to determine, so that allergic diseases are difficult to treat or prevent.
Owner:HEILONGJIANG UNIV +1

Deep whey protein hydrolysate with low sensitization and allergy relieving effect as well as preparation method and application of deep whey protein hydrolysate

The invention provides a whey protein deep hydrolysate with low sensitization and an allergy relieving effect as well as a preparation method and application of the whey protein deep hydrolysate. According to the method, the alkaline protease, the neutral protease and the glutamyltransferase are sequentially used for carrying out first enzymolysis, second enzymolysis and third enzymolysis on the whey protein raw material, and the whey protein hydrolysate which is low in molecular weight, good in taste, good in digestion and absorption performance, low in sensitization and capable of effectively relieving allergic reaction of the organism is obtained.
Owner:CHINA NAT RES INST OF FOOD & FERMENTATION IND CO LTD

Anti-IgE antibody therapy for multiple food allergies

The present disclosure provides methods and kits for treating or preventing an allergic reaction to a food allergen consumed by a human subject with one or more food allergies. In particular, the present disclosure provides prophylactic therapies comprising administration of an anti-IgE antibody at a specific dose to a human subject who is allergic to one or more food allergens.
Owner:NOVARTIS AG +1

Antibacterial breathable dressing patch and preparation method thereof

The invention discloses an antibacterial breathable dressing patch and a preparation method thereof, and belongs to the field of medical dressings, the antibacterial breathable dressing patch comprises a Janus type dressing patch layer which is a composite film containing a hydrocolloid matrix, pH response antibacterial microspheres and bioactive glass nanoparticles; the super-hydrophobic electrostatic spinning outer layer is a super-hydrophobic electrostatic spinning fiber membrane, and the super-hydrophobic electrostatic spinning outer layer and the Janus type dressing skin-attaching layer are compounded to form an asymmetric Janus structure, intellectualization and precision of the antibacterial effect are achieved, and the risks of cytotoxicity and bacterial drug resistance possibly caused by long-term exposure to an antibacterial agent are reduced to the maximum extent; a multi-mechanism and synergistic antibacterial defense system is constructed, more comprehensive and firm protection is provided for wounds, the air permeability and moisture permeability are excellent, a dry and moist ideal healing environment is created for the wounds, the biocompatibility is good, the use safety is high, the wound healing agent is mild to human tissues, the irritation is low, the allergic reaction risk is small, the safety is high, and the wound healing effect is good. The long-term use is facilitated.
Owner:SAILAISI LNDUSTRIAL (HANGZHOU) CO LTD

Child cross allergen risk dynamic map generation system

The invention relates to the technical field of atlas generation, in particular to a children cross-allergen risk dynamic atlas generation system, which comprises the following steps: firstly, determining sensitivity indexes according to immune response conditions of each type of allergens in all allergy detection processes; according to the similarity of each allergen and other allergens in two dimensions of allergen protein structure and IgE level, combining the sensitivity index, and comprehensively representing the cross reaction risk index of each allergen in each allergy detection process; then comprehensively determining the cross-allergy risk degree of various allergens in each season period according to the increasing trend of the cross-allergy risk index curve in each season period and the overall size of the cross-allergy risk index in combination with the characteristic that the cross-allergy reaction possibly caused by the season change is dynamically changed; and the cross allergen risk dynamic map generated in real time according to the cross allergen risk degree is more accurate.
Owner:DEZHOU ZEYU MEDICAL DEVICE TECHNOLOGY CO LTD

Application of vitamin E compound in preparation of MACIR protein targeting agent

The invention relates to application of a vitamin E compound in preparation of a MACIR protein targeting agent. The vitamin E compound comprises any one or a combination of at least two of tocopherol, tocopherol derivatives, tocotrienol or tocotrienol derivatives. The invention creatively discovers the interaction between tocopherol, tocopherol derivatives, tocotrienol or tocotrienol derivatives and MACIR protein, and proves the strong binding capacity of tocopherol or derivatives thereof and MACIR protein through experiments. The tocopherol, the tocopherol derivative, the tocotrienol or the tocotrienol derivative can be used for regulating the function of MACIR protein associated immune cells so as to influence the expression of inflammatory factors, play an important role in inflammation and anaphylaxis, and also can be used for improving skin injury repair.
Owner:SHANGHAI ZELIXIR BIOTECH CO LTD

Composition with moisturizing effect as well as preparation method and application thereof

The invention belongs to the technical field of cosmetics, and particularly relates to a composition with a moisturizing effect and a preparation method and application thereof. The composition comprises the following components in percentage by weight: 0.3%-0.8% of a plant fermentation product, 1.2%-2.0% of a plant enzymolysis product, 15%-20% of a humectant, 1.6%-2.5% of a chondrus crispus extract, 0.5%-1.1% of a Chinese herbaceous peony extract, 2.6%-3.9% of a rosemary extract and the balance of water. The composition is suitable for people with allergic reaction caused by face dryness, has a good moisturizing effect, has a long-acting moisturizing effect, also has repairing and anti-aging effects, is mild and non-irritant, and can be used for preparing face moisturizing products.
Owner:SHANDONG MEIAI BIOTECHNOLOGY CO LTD +1

Method for preparing repair composition and use thereof

The present invention relates to a repair composition, a facial mask essence and a preparation method therefor. The repair composition comprises the following components in percentage by weight: 10.0%-30.0% of an animal umbilical cord extract, 20.0%-50.0% of β-1.3 glucan and 20.0%-70.0% of a Portulacae herba extract. The repair composition of the present invention is used in cosmetics, and has the effects of significantly reducing wrinkle formation and delaying skin aging, thereby further achieving the effect of maintaining beauty and youth. The repair composition does not cause users to have an allergic reaction and is safe to use.
Owner:BEIHAO STEM CELL & REGENERATIVE MEDICINE RES INST CO LTD

Polypeptide with triple helix structure, recombinant XII type humanized collagen and application of recombinant XII type humanized collagen

The invention relates to the technical field of synthetic biology, in particular to polypeptide with a triple helix structure, recombinant XII type humanized collagen and application of the recombinant XII type humanized collagen. The recombinant XII type humanized collagen is successfully expressed and prepared, has a triple-helix structure and good biological activity including promotion of cell proliferation activity, cell adhesion activity and inhibition of MMP-1, is used as a biological material derived from a human body, does not generate immunological rejection and anaphylactic reaction when applied to the human body, and has a good application prospect. The composition can be used for medical or non-medical application of a plurality of tissues and organs of a human body, filling, compatibilizing or repairing, and promotion of skin compactness or wrinkle resistance and other scenes.
Owner:SHANXI JINBO BIO PHARMACEUTICAL CO LTD

Nanoemulsion compositions for preventing, suppressing or eliminating allergic and inflammatory disease

The present invention provides methods and compositions for the stimulation of immune responses and for treating or preventing allergic disease and responses and inflammatory disease and responses. In particular, the present invention provides nanoemulsion compositions and methods of using the same for the induction of immune responses that prevent or treat allergic disease by reducing allergic response. Compositions and methods of the invention find use in, among other things, clinical (e.g. therapeutic and preventative medicine (e.g., vaccination)) and research applications.
Owner:THE RGT UNIV OF MICHIGAN

Agonistic anti-tumor necrosis factor receptor 2 antibodies

The invention provides agonistic TNFR2 antibodies and antigen-binding fragments thereof and encompasses the use of these antibodies as therapeutics to promote the proliferation of regulatory T cells (T-reg) for the treatment of immunological diseases. Antibodies of the invention can be used to potentiate the T-reg-mediated deactivation of self- and allergen-reactive T- and B-lymphocytes, and can thus be used to treat a wide variety of indications, including autoimmune diseases, allergic reactions, asthma, graft-versus-host disease, and allograft rejection, among others.
Owner:THE GENERAL HOSPITAL CORP

Collagen and chitosan cross-linked temperature-sensitive gel for repairing articular cartilage and preparation method of collagen and chitosan cross-linked temperature-sensitive gel

The invention relates to the field of preparation of materials for articular cartilage repair, in particular to collagen and chitosan cross-linked temperature-sensitive gel for articular cartilage repair and a preparation method of the collagen and chitosan cross-linked temperature-sensitive gel. The cartilage repair material prepared by the invention adopts the recombinant human collagen with a triple helix structure as a main raw material. The raw material is prepared by using a mammalian cell expression system, is close to protein folding and polymerization of natural protein, and has a spatial structure and modification necessary for active protein. The recombinant human collagen with the triple-helix structure is good in biocompatibility and free of rejection reaction and anaphylactic reaction, and the risk of disease transmission possibly caused by animal-derived collagen can be avoided. The injection type temperature-sensitive gel is liquid at low temperature and is converted into hydrogel at 37 DEG C, so that the injection type temperature-sensitive gel is suitable for being used as a transfer carrier for in-vivo injection treatment, secondary injury of an organism is effectively avoided, and the injection type temperature-sensitive gel has a wide clinical application prospect.
Owner:NANJING DONGWAN BIOTECHNOLOGY CO LTD +1

Method for preparing allergic rhinitis spray from umbilical cord mesenchymal stem cell exosome

The invention relates to the technical field of rhinitis spray preparation, in particular to a method for preparing allergic rhinitis spray from umbilical cord mesenchymal stem cell exosomes, which comprises the following steps: 1, umbilical cord treatment; 2, culturing umbilical cord mesenchymal stem cells; 3, preparing an umbilical cord mesenchymal stem cell exosome; and 4, preparing the rhinitis spray. The rhinitis spray prepared by the method disclosed by the invention is simpler and more convenient to use. The exosome, the platelet growth factor and other substances in the rhinitis spray well solve the core problems of single curative effect, large side effect, low compliance and the like in the traditional rhinitis treatment, and through the induction and repair functions of the stem cell exosome and the bactericidal ability of the antibacterial peptide, the nasal cavity environment is improved, the anaphylactic reaction is reduced, the nasal mucosa is repaired, and the rhinitis treatment effect is improved. The allergic rhinitis is expected to be fundamentally treated.
Owner:山西药科职业学院

Egg allergic antigen

ActiveCN114689870BEliminate or reduce manufacturing methodsBioreactor/fermenter combinationsBiological substance pretreatmentsAllergic transfusion reactionType antigen
The present invention relates to an antigen for egg allergy. The present invention provides a novel antigen for egg allergy, a diagnostic method and a diagnostic kit for egg allergy, a pharmaceutical composition containing the antigen, an egg or egg processed product with the antigen removed or reduced, or a bird producing the egg or hatched from the egg, or a method for producing an egg processed product with the antigen removed or reduced, and a detector for determining whether an object has an egg antigen.
Owner:HOYU CO LTD

Biological patch material with dry-state adhesion and wet-state easy stripping characteristics and application thereof

PendingCN121197500ABandagesBurned skinIrritation
The invention discloses a biological patch material with dry-state adhesion and wet-state easy stripping characteristics and application thereof, and belongs to the field of biological medicine. The biological patch material is prepared according to the following steps: by taking water-soluble protein as a template and copper ions in water-soluble copper salt as a metal coordination center, carrying out self-assembly on the template and drug molecules with phenolic hydroxyl structures to form nanoflowers; mixing the acrylamide, the sodium alginate, the water-soluble calcium salt and the nano-flowers to obtain the water-soluble calcium-based water-soluble nano-flower fertilizer. The biological patch material is adhered to the skin through electrostatic interaction, covalent bonds, physical interpenetration and topological tissues. The patch has skin adhesion in a dry state, so that the patch is convenient to fix; after the patch is in contact with burnt skin, the patch absorbs water and swells, the adhesive force is obviously reduced, and painless, easy and non-invasive stripping is realized. In addition, the patch has immunoregulation performance, can prevent stimulation and anaphylaxis caused by long-term contact with the skin, and promotes burn repair.
Owner:FOURTH MILITARY MEDICAL UNIVERSITY

Mixtures of HMO and bifidobacteria

The present invention relates to a composition for infants or young children comprising at least one probiotic strain and a prebiotic mixture of human milk oligosaccharides, said probiotic strain being Bifidobacteria, the present invention relates to a composition comprising a prebiotic mixture of human milk oligosaccharides consisting of 2 '-fucosyllactose (2FL), milk difucosyltetraose / difucosyllactose (DFL), milk-N-tetraose (LNT), 6'-sialyllactose (6SL), 3 '-sialyllactose (3SL) and optionally 3-fucosyllactose (3FL), which composition is useful for (i) preventing and / or treating a bacterial infection in an infant or a young child; (ii) modulate the microbiota in the infant or young child; and / or iii) preventing and / or treating allergies in infants or young children.
Owner:SOCIETE DES PRODUITS NESTLE SA

Application of Bifidobacterium lactis BLa80 in improving and alleviating allergic reactions

The present invention belongs to the field of microbial technology, and relates to the application of Bifidobacterium lactis BLa80 in improving and alleviating allergic reactions. The present invention first provides the application of Bifidobacterium lactis BLa80 in the preparation of a medicine for improving and alleviating allergic reactions. Experiments of the present invention have shown that BLa80 can significantly reduce the scratching behavior and back skin lesion inflammation scores of mice, and significantly reduce the behavioral observation scores and the degree of ear swelling. Bifidobacterium lactis BLa80 significantly reduces the IgE level in the serum of the model group, significantly increases the IFN‑γ level, significantly reduces the IL‑4 level, and Bifidobacterium lactis BLa80 can significantly increase the IFN‑γ / IL‑4 ratio, indicating that Bifidobacterium lactis BLa80 can regulate the balance of Th1 / Th2. The present invention also provides the application of Bifidobacterium lactis BLa80 in the preparation of health foods and cosmetics for improving and allergic relief.
Owner:JIANGSU WECARE BIOTECHNOLOGY CO LTD

Expandable frame for medical device

A prosthetic heart valve for the treatment of structural heart disease wherein the prosthetic heart valve includes an expandable frame that a) has an open cell geometry in the frame of the prosthetic heart valve that can be used to reduce delivery system size, b) has high radial strength, c) has improved restoration of the physiologic EOA, d) has lower recoil, e) has little or no longitudinal foreshortening, f) allows for proper placement of the bioprosthetic valve in relation to the native commissures of the valve, h) has symmetrical and cylindrical expansion of the prosthetic valve resulting in lower rates of leaflet thrombosis and structural valve deterioration, and / or i) prevents allergic response and restenosis associated with nickel content.
Owner:MIRUS LLC

Real-time processing method and system for rapid identification and filing of emergency patients

The embodiment of the invention provides a real-time processing method and system for rapid identification and filing of emergency patients. Wherein the intelligent medical fabric is worn on the skin surface of a burn patient, reflected light intensity distribution and microvascular pulsation waveforms are captured, and the light transmittance and the sampling frequency are automatically adjusted; the reflected light intensity distribution and the microvascular pulsation waveform are converted into combined parameters and matched, and a grading alarm signal is triggered when a skin tolerance dynamic interval is exceeded; packaging the graded alarm signal and the real-time physical sign data of the patient into a cross-hospital transmission data packet, and sending a data sharing request to a cooperative hospital; performing feature space alignment on the burnt skin allergy feature spectrum to generate a cross-mechanism allergy reaction prediction model; and automatically reconstructing an allergy monitoring file of the burnt patient during detection and transfer. According to the technical scheme provided by the embodiment of the invention, intelligent early warning and dynamic filing of the allergic reaction of the burn patient are realized, and the recognition accuracy and filing efficiency of the emergency patient in an emergency scene are remarkably improved.
Owner:THE FIRST MEDICAL CENT CHINESE PLA GENERAL HOSPITAL

Polypeptide, recombinant XIX type humanized collagen and application of recombinant XIX type humanized collagen

The invention relates to the technical field of biology, and particularly discloses polypeptide, recombinant XIX type humanized collagen and application of the recombinant XIX type humanized collagen. The amino acid sequence of the polypeptide comprises n repetitive units; the repetitive unit comprises any one of the following amino acid sequences or variant sequences thereof: (1) an amino acid sequence as shown in any one of SEQ ID NO.1-2; (2) an amino acid sequence having at least 50%, 60%, 70%, 75%, 80%, 85%, 90%, 95%, 96%, 97%, 98% or 99% sequence identity with the amino acid sequence as shown in any one of SEQ ID NO.1-2; (3) a variant sequence obtained by performing mutation of one or more amino acid residues on the amino acid sequence as shown in any one of SEQ ID NO.1-2; wherein n is an integer greater than or equal to 1. The polypeptide provided by the invention has a collagen triple helix structure, has good cell adhesion activity, can carry out functions of human collagen, is free of immunological rejection and anaphylactic reaction, and can be used in various fields of cartilage repair, biological dressing, tissue filling and the like.
Owner:SHANXI JINBO BIO PHARMACEUTICAL CO LTD

Acne-removing skin-care conditioning oil and preparation method thereof

PendingCN120458965ACosmetic preparationsAntipyreticGinger root oilAllergic reaction
The acne-removing skin-care conditioning oil is prepared from the following components in parts by weight: 90 to 95 parts of sweet almond oil, 0.5 to 1.5 parts of ginger root oil, 0.5 to 1.5 parts of peppermint oil, 1.5 to 2.5 parts of lemon peel oil, 1 to 1.5 parts of eucalyptus globulus leaf oil and 2 to 3 parts of lemongrass leaf oil. The invention also discloses a preparation method of the acne-removing skin-care conditioning oil. The acne-removing skin-care conditioning oil disclosed by the invention is small in skin irritation, wide in universality and few in allergic phenomenon, and can also achieve the effects of repairing and skin care while removing acnes.
Owner:FEILANG BIOTECHNOLOGY (HUBEI) CO LTD

Establishment method of indirect ELISA (enzyme-linked immuno sorbent assay) for detecting mycobacterium bovis Lprl

PendingCN121476593AImmunoassaysSerum dilutionAllergic reaction
The invention discloses a method for establishing indirect ELISA (enzyme-linked immunosorbent assay) for detecting mycobacterium bovis Lprl, which comprises the following steps: preparing mycobacterium bovis Lprl protein, taking the purified protein as an antigen, and determining conditions such as optimal antigen coating concentration, serum dilution, serum incubation time, secondary antibody dilution concentration, incubation time and the like. The established indirect ELISA detection method does not have cross reaction with other bovine pathogens, the specificity is good, the detection accuracy is high, and the total coincidence rate of test results of intradermal allergy with bovine tubercle bacillus is 95.8%; the intra-batch variation coefficient of the detected samples is 2.43%-3.61%, the inter-batch variation coefficient is 2.83%-3.96%, and the intra-batch variation coefficient and the inter-batch variation coefficient are both smaller than 10%. A new diagnosis target is developed, the established indirect ELISA method has the characteristics of high sensitivity, strong specificity, good repeatability and the like, the operation is easy, and a new method is provided for the detection work of the mycobacterium bovis.
Owner:SHIHEZI UNIVERSITY

Method for reducing anaphylaxis of natural latex by multi-enzyme cascade catalysis of rubber protein

PendingCN120518798AProtein SensitizationOligopeptide
The invention relates to a method for reducing the anaphylaxis of natural latex by multi-enzyme cascade catalysis of rubber protein. The invention relates to the technical field of catalysis of rubber protein hydrolysis, in particular to a method for reducing the anaphylaxis of natural latex by thoroughly hydrolyzing rubber protein through multi-enzyme cascade catalysis. The method for reducing the anaphylaxis of the natural latex by catalyzing the rubber protein through the synergistic effect of multiple enzymes from the perspective of industrial production comprises the following steps: adding an enzyme A and an enzyme B into the natural latex for reaction so as to reduce the anaphylaxis of the natural latex, the enzyme A is alkaline protease; and the B enzyme is at least one of aminopeptidase, carboxypeptidase B, carboxypeptidase A and carboxypeptidase Y. According to the method disclosed by the invention, the enzyme A-endopeptidase and the enzyme B-exopeptidase are subjected to multi-enzyme-stage combined treatment and concerted catalysis, so that the enzyme A-endopeptidase and the enzyme B-exopeptidase are completely hydrolyzed or are completely hydrolyzed into more amino acid substances and short-chain peptides (oligopeptides) as far as possible, and the amino acid substances and the short-chain peptides (oligopeptides) are retained in latex. Protein is highly hydrolyzed into amino acid with higher safety, so that the possibility of I-type anaphylactic reaction caused by protein allergens is greatly reduced or even eliminated.
Owner:AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI

Anti-Der p 1 antibody and application thereof

The invention relates to the field of antibodies, in particular to an anti-Der p 1 antibody and application thereof. The invention provides an anti-Der p 1 antibody, the anti-Der p 1 antibody comprises a heavy chain variable region and a light chain variable region, the heavy chain variable region comprises an amino acid sequence of a complementarity determining region, and the amino acid sequence of the complementarity determining region comprises CDR1 as shown in SEQ ID No.1, CDR2 as shown in SEQ ID No.2 and CDR3 as shown in SEQ ID No.3; or the amino acid sequence of the heavy chain variable region is as shown in SEQ ID No.8. The anti-Der p1 antibody provided by the invention is a monoclonal antibody with high affinity and high sensitivity, after the monoclonal antibody is subjected to humanized IgE transformation, the monoclonal antibody is applied to a Dermatophagoides pteronyssinus allergen component Derp1 specificity IgE magnetic particle chemiluminescence quantitative detection reagent, and a standard curve independently calibrated by the Dermatophagoides pteronyssinus allergen component Derp1 can be obtained; real, accurate and repeatable absolute quantification is realized, the Dermatophagoides pteronyssinus allergen component Derp 1 specificity IgE with the concentration of 0.1 IU / mL can be detected, and the method has clinical diagnosis significance in allergic reaction identification.
Owner:SHANGHAI ADVANCED CLINICAL LABORATORY SCIENCE CO LTD +1

Recombinant cat allergen, pharmaceutical composition thereof, preparation method therefor, and use thereof

PCT designated stage expiredWO2025139524A1Allergen ingredientsImmunological disordersDiseaseTolerability
Provided are a recombinant cat allergen, a pharmaceutical composition therefor, a preparation method therefor, and a use thereof. Compared with naturally extracted allergen products, the recombinant cat allergen has multiple advantages in desensitization immunotherapy and allergen diagnosis for cat allergic diseases. For example, high purity and high uniformity are achieved; a pure protein / peptide having specified properties and quality is defined; the allergenicity, immunogenicity, and tolerability of the allergen are predetermined; production is performed according to GMP standards; the production of a specified quantity and concentration in a reproducible manner is enabled; product standardization and quality controllability are achieved; regulatory requirements for modern pharmaceuticals and vaccines are met; and when used for diagnosis, the allergen can identify allergen molecules that truly cause allergic reactions and reveal cross-reactivity, and when used for treatment, the allergen enables targeted allergen immunotherapy for a patient, avoiding the influence of non-allergenic substances in an extract, improving the safety, and facilitating precise diagnosis, precise administration, etc.
Owner:ZONHON BIOPHARMA INST