38 results about "Mast cell activation" patented technology

The invention provides a method for preventing and treating the harmful biological effects of biochemicals secreted from activated mast cells in the organism of warm blooded animals and more especially human beings, said effects being associated with allergy (including but not limited to allergic conjunctivitis, allergic rhinitis, allergic otitis, asthma, allergic uticaria, food allergy and atopic dermatitis), hyperproliferative diseases such as leukemia and systemic mastocytosis, interstitial cystitis, inflammatory bowel disease, irritable bowel syndrome, osteoporosis and scleroderma. The method consists in administering to said animals and especially to human beings an effective amount of a proteoglycan such as chondroitin sulfate with mast cell secretion inhibitory activity, alone or in combination with one or more synergistic adjuvants such those belonging to the class of flavonoids or compounds with histamine-1 receptor antagonist activity.

The invention concerns the use of a mast cell activation- or degranulation-blocking agent in the manufacture of a medicament for the treatment of cerebral ischemia. The invention also relates to treatment of patients suffering from acute ischemic stroke, acute hemorrhagic stroke, subarachnoid hemorrhage, cerebral venous thrombosis or global cerebral ischemia associated with cardiac arrest. Further, the invention provides compositions of contrast media or similar exogenous media, which are intended for use in diagnostic or therapeutic applications for introduction into the intravascular, intrathecal or the intracranial space, comprising a mast cell degranulation-blocking and / or mast cell activation-blocking agent.

The invention concerns the use of a mast cell activation- or degranulation-blocking agent in the manufacture of a medicament for preventing and treating cerebral complications caused by thrombolytic treatment. The invention also relates to treatment of patients suffering from cerebral complications associated with thrombolysis. Further, the invention provides thrombolytic compositions comprising a mast cell degranulation-blocking and / or mast cell activation-blocking agent present in a therapeutically effective amount to prevent or reduce any cerebral complications caused by the active thrombolytic component.

Methods for treating and preventing inflammatory diseases using tyrosine kinase inhibitors are described. The inhibitors inhibit, e.g., T lymphocyte and / or B lymphocyte function, fibroblast proliferation, mast cells activation, and / or monocyte differentiation.

The present invention is directed to methods of treatment and / or management of diarrhea, such as chronic diarrhea using sequential administration of opioid agonists to suppress gut mobility and opioid antagonists to reverse the effect to controllably allow bowel movements. The agonists and antagonists are administered with a time interval in between the administration or between the release of the drugs from a pharmaceutical composition. The invention is further directed to methods of controlling, treating or managing side effects caused by the opioid agonists, specifically the side effects resulting from mast cell activation and / or granulation.

Compositions for protection against SVFS induced by niacin, a carcinoid, mesenteric traction, serotonin, post-menopause, alcohol, monosodium glutamate, mastocytosis, atopic dermatitis, food-allergy or food intolerance, and mast cell activation syndrome, or against individual symptoms of SVFS, superficial vasodilation, feeling of warmth, itching (pruritus) and hives, comprising a flavonoid compound of the structure 2-phenyl-4H-1-benzopyran or 2-phenyl-4-keto-1-benzopyran or glycosides thereof, or chalconoid compounds, with appropriate substitutions of their hydroxyl groups to render them water soluble or in combination with a pshospholipid or cyclodextrin to render them to have higher oral absorption, administered alone or together with an anti-superficial vasodilation dose of one or more of, olive kernel oil, a serotonin inhibitor, a prostaglandin inhibitor, willow bark extract. A composition for treating cardiovascular disease with niacin, but without eliciting the SVFS effects of niacin, has also been invented.

The present invention provides a method of modulating mast cell function using Siglec 6 antibodies or fragments thereof. The present invention also provides methods of treating or preventing diseases or disorders associated with mast cell function.

Lactobacillus compositions, especially those based on L. casei, and methods for the prevention and treatment of diseases or disorders involving or mediated by mast cells, such as anaphylaxis, allergy, autoimmune and inflammatory disorders including arthritis and rheumatoid arthritis.

A carboxylic acid compound represented by formula (I): (meanings of the symbols in the formula are as mentioned in the specification) and a pharmaceutical agent comprising the compound. <>Since the compound represented by formula (I) binds to a DP receptor and shows antagonistic activity for the DP receptor, it is useful for prevention and / or treatment of diseases such as allergic disease (such as allergic rhinitis, allergic conjunctivitis, atopic dermatitis, bronchial asthma and food allergy), systemic mastocytosis, disorders accompanied by systemic mast cell activation, anaphylaxis shock, bronchoconstriction, urticaria, eczema, diseases accompanied by itch (such as atopic dermatitis and urticaria), diseases (such as cataract, retinal detachment, inflammation, infection and sleeping disorders) which is generated secondarily as a result of behavior accompanied by itch (such as scratching and beating), inflammation, chronic obstructive pulmonary diseases, ischemic reperfusion injury, cerebrovascular accident, chronic rheumatoid arthritis, pleurisy, ulcerative colitis and the like. Carboxylic acid compounds represented by the following general formula (I) (wherein each symbol is as defined in the description) and drugs containing these compounds: (I) Because of binding to DP receptor and antagonizing the same, the compounds represented by the general formula (I) are useful in preventing and / or treating allergic diseases (allergic nephritis, allergic conjunctivitis, atopic dermatitis, bronchial asthma, food allergy, etc.), systemic mast cell disease, systemic mast cell activation failure, anaphylactic shock, respiratory tract contraction, urticaria, eczema, diseases associated with itch (atopic dermatitis, urticaria, etc.), diseases (cataract, retinal detachment, inflammation, infection, sleep disorder, etc.) secondarily caused by behaviors associating itch (scratching, beating.

The present invention provides a compound, a pharmaceutically acceptable salt thereof, or a hydrate thereof having PGD2-antagonistic activities, inhibitory activities against infiltration of eosinophils, and being useful as a drug for treating diseases, such as systemic mastocytosis and disorder of systemic mast cell activation, as well as tracheal contraction, asthma, allergic rhinitis, allergic conjunctivitis, urticaria, ischemic reperfusion injury, inflammation and atopic dermatitis, which is shown by the following formula (I).

The subject invention pertains to the development of a novel human mast cell line, USF-MC1. USF-MC1 is a mast cell precursor present in human umbilical cord blood (HUCB) that may be sustained in culture in the absence of exogenous cytokines to serve as a convenient experimental model of human mast cell activation. The SCF-independent human mast cell line USF-MC1 responds to IgE-mediated and IgE-independent stimuli in a way comparable to that of LAD2. USF-MC1 cells are useful for investigation of IgE-mediated activation mechanisms of human mast cells, contributing to the development of effective treatments for allergic disorders and other disorders. The subject invention provides a ready source of human mast cells for research, including pharmacological studies for the screening of various agents, and toxicologic, e.g., for the cosmetic and pharmaceutical industries. The mast cells can also be used as biofactories, for the large-scale production of biomolecules.

The invention discloses novel application of dictamnine, in particular to application of the dictamnine in preparing type I hypersensitivity reaction drugs caused by mast cell activation, and belongsto the field of pharmaceuticals. According to the dictamnine disclosed by the invention, by constructing a C48 / 80 induced P815 mast cell in vitro inflammatory model, the dictamnine is found to have the effects of inhibiting the activation of mast cells, effectively inhibiting the degranulation degree of the mast cells in a sensitized state and alleviating the release of beta-hexosaminidase; the expression of inflammatory genes IL-4, IL-6, IL-12 and IL-13 in the mRNA level can be inhibited; in addition, the phosphorylation level of ERK in an intracellular signaling pathway can be significantlyinhibited.

A prostaglandin derivative represented by the formula (wherein X is a halogen atom; Y is ethylene group, vinylene group or ethylylene group; Z is a group represented by —(CH2)m, —O(CH2)n— or —S(O)p—(CH2)n— (m is an integer of 0 to 3; n is an integer of 0 to 2; and p is an integer of 0 to 2); R1 is a hydrogen atom, a C1-5 alkyl group or a substituted C1-5 alkyl group; R2 is a C3-10 cycloalkyl group, a C3-10 cycloalkyl group substituted by C1-4 alkyl group or C4-15 cycloalkylalkyl group; and R3 is a hydrogen atom, a halogen atom or a C1-5 alkyl group or a substituted C1-5 alkyl group), a pharmaceutically acceptable salt thereof or a hydrate thereof which has an excellent antagonism to prostaglandin DP receptor and, therefore, is useful against diseases such as allergic rhinitis, nasal obstruction, asthma, allergic conjunctivitis, systemic mastocytosis and disorder of systemic mast cell activation.

Provided are an exosome preparation formed by secretion by a mast cell cultured in vitro, a preparation method of an exosome therein, an exosome containing FcεRI protein on an outer surface thereof and in a substantially unbound state, and uses of the exosome preparation or exosome in a method for inhibiting mast cell activation in vitro and in preparing a drug for treating an IgE-mediated disease.

The present invention provides cannabinoid-containing complex mixtures suitable for use as active pharmaceutical ingredients. The complex mixtures are comprised of the major cannabinoid, cannabidiol,a first minor cannabinoid, which is cannabigerol, at least a first selected terpene, and optionally a second minor cannabinoid. Also provided are methods of making the complex mixtures, pharmaceuticalcompositions comprising the complex mixture, and methods of using the pharmaceutical compositions for the treatment of mast cell-related immune disorders, including allergy and atopy (allergic asthma, eczema, rhinitis), mast cell activation syndrome (MCAS), physical and chemical urticarias, idiopathic urticaria, Crohn's disease, inflammatory bowel disorder, dermatitis and contact dermatitis, arthritis and rheumatoid arthritis, canine mastocytosis, and allergy and inflammation in cattle, swine, etc. The methods of the present invention further relate to the treatment of various basophil-mediated immune disorders.

Compositions and methods for use in inhibiting mast cell activation and / or treatment or prevention of disorders associated with mast cell activation or degranulation. The compositions and methods of use include a Perilla spp. extract, such as in combination with another plant extract. The second plant extract desirably adds anti-inflammatory and / or anti-allergy properties to the compositions.

The present invention is a method for inhibiting Treg cell functional activities by blocking Treg cell-mediated mast cell activation. It has been found IL-9 produced by Treg cells activates mast cells, which in turn mediate an amplification loop critical for graft tolerance and immune responses to tumors. Thus, a method for enhancing an immune response to a vaccine, such as a cancer vaccine, is also provided as is a method for increasing cell and humoral immunity in a subject.

A carboxylic acid compound represented by formula (I): (meanings of the symbols in the formula are as mentioned in the specification) and a pharmaceutical agent comprising the compound. <>Since the compound represented by formula (I) binds to a DP receptor and shows antagonistic activity for the DP receptor, it is useful for prevention and / or treatment of diseases such as allergic disease (such as allergic rhinitis, allergic conjunctivitis, atopic dermatitis, bronchial asthma and food allergy), systemic mastocytosis, disorders accompanied by systemic mast cell activation, anaphylaxis shock, bronchoconstriction, urticaria, eczema, diseases accompanied by itch (such as atopic dermatitis and urticaria), diseases (such as cataract, retinal detachment, inflammation, infection and sleeping disorders) which is generated secondarily as a result of behavior accompanied by itch (such as scratching and beating), inflammation, chronic obstructive pulmonary diseases, ischemic reperfusion injury, cerebrovascular accident, chronic rheumatoid arthritis, pleurisy, ulcerative colitis and the like. Carboxylic acid compounds represented by the following general formula (I) (wherein each symbol is as defined in the description) and drugs containing these compounds: (I) Because of binding to DP receptor and antagonizing the same, the compounds represented by the general formula (I) are useful in preventing and / or treating allergic diseases (allergic nephritis, allergic conjunctivitis, atopic dermatitis, bronchial asthma, food allergy, etc.), systemic mast cell disease, systemic mast cell activation failure, anaphylactic shock, respiratory tract contraction, urticaria, eczema, diseases associated with itch (atopic dermatitis, urticaria, etc.), diseases (cataract, retinal detachment, inflammation, infection, sleep disorder, etc.) secondarily caused by behaviors associating itch (scratching, beating.

Etifoxine, or a pharmaceutically acceptable derivative thereof, can be used for the treatment of a disease related to activated mast cells in a subject, preferably a human. Furthermore, a pharmaceutical composition containing Etifoxine, or a pharmaceutically acceptable derivative thereof, and a pharmaceutically acceptable excipient can be used for the treatment of a disease related to activated mast cells. An in vitro or ex-vivo method of inhibiting mast cell activation, involves contacting a cell with Etifoxine, or a pharmaceutically acceptable derivative thereof.

The invention refers to a recombinant human diamine oxidase (DAO) with decreased glycosaminoglycan binding affinity, wherein said DAO comprises at least one amino acid modification in the glycosaminoglycan (GAG) binding domain. The present invention also refers to the use of the DAO in the treatment of a condition associated with excess histamine, specifically in the treatment of chronic allergic diseases, more specifically in the treatment of anaphylaxis, anaphylactic shock, chronic urticaria, acute urticaria, asthma, hay fever, allergic rhinitis, allergic conjunctivitis, histamine intoxication, headache, atopic dermatitis inflammatory diseases, mastocytosis, mast cell activation syndrome (MCAS), pre-eclampsia, hyperemesis gravidarum, pre-term labor, peptic ulcers, acid reflux, pruritus, and sepsis.

The compound of formula (I) or a salt, preferably a pharmaceutically acceptable salt, thereof; is an inhibitor of spleen tyrosine kinase (SYK) and therefore potentially of use in treating diseases resulting from inappropriate mast cell activation, for instance allergic and inflammatory diseases, as well of potential use in cancer therapy, specifically heme malignancies.

The invention discloses the use of an L-Plastin gene, which is an application of the L-Plastin gene as a drug target in screening a type I hypersensitivity targeted therapeutic inhibitor, and the invention is induced by constructing a sensitizer C48 / 80 The P815 mast cell in vitro allergy model found that L-Plastin knockdown has the effect of inhibiting mast cell activation, can effectively inhibitthe degree of degranulation of mast cells in sensitized state, and relieve the release of histamine and beta-hexosaminidase Represses the synthesis and secretion of inflammatory factors; inhibits theexpression of inflammatory genes and the expression of key receptors in the mast cell activation pathway, and significantly inhibits the RAF-MEK-ERK signaling pathway and inhibits AKT in the intracellular signaling pathway. Phosphorylation levels have been shown to have anti-allergic effects at the cellular level, providing a theoretical basis for clinical treatment of type I hypersensitivity reactions and the application of screening for new drug targets.

The invention relates generally to the changes in gene expression in mast cells and tissues removed from patients with allergic hypersensitivity. The invention specifically relates to the genes MC21, MC22, MC25, MC33, MC36, and MC39, which are differentially expressed in mast cells compared to normal tissues and in resting mast cells versus activated mast cells.

The invention belongs to the technical field of medicines, and discloses a new application of aloe-emodin (the English name is aloe-emodin; and the CAS number is 481-72-1) as an anti-mast cell activator. In-vitro pharmacodynamic experiment results show that the aloe-emodin can remarkably reduce release of mast cell sensitizers and stabilize mast cell membranes on the premise of not influencing cell activity (non-toxicity), and has a strong and remarkable mast cell activation resisting effect. Animal experiment results show that the aloe-emodin can significantly improve the survival rate of allergic shock mice and has an obvious protective effect. Therefore, the invention provides the new application of the aloe-emodin as the anti-mast cell activator, and the aloe-emodin can be used for preparing medicines, health-care products, foods or cosmetics for diseases related to mast cell activation.