1. GPCR/G Protein
    Immunology/Inflammation
  2. Histamine Receptor

Histamine Receptor

Histamine Receptors are a class of G protein-coupled receptors with histamine as their endogenous ligand. There are four known histamine receptors: H1 receptor, H2 receptor, H3 receptor, H4 receptor. The H1 receptor is a histamine receptor belonging to the family of Rhodopsin-like G-protein-coupled receptors. This receptor, which is activated by the biogenic amine histamine, is expressed throughout the body, to be specific, in smooth muscles, on vascular endothelial cells, in the heart, and in the central nervous system. H2 receptors are positively coupled to adenylate cyclase via Gs. It is a potent stimulant of cAMP production, which leads to activation of Protein Kinase A. Histamine H3 receptors are expressed in the central nervous system and to a lesser extent the peripheral nervous system, where they act asautoreceptors in presynaptic histaminergic neurons, and also control histamine turnover by feedback inhibition of histamine synthesis and release. The Histamine H4 receptor has been shown to be involved in mediating eosinophil shape change and mast cell chemotaxis.

Histamine Receptor Related Products (123):

Cat. No. Product Name Effect Purity
  • HY-17043
    Loratadine Agonist 99.95%
    Loratadine(SCH-29851) is a selective inverse peripheral histamine H1-receptor agonist with an IC50 of >32 μM.
  • HY-B1204
    Histamine Activator 99.25%
    Histamine is an organic nitrogenous compound involved in local immune responses as well as regulating physiological function in the gut and acting as a neurotransmitter.
  • HY-N0054
    Osthole Inhibitor 99.90%
    Osthole is a natural antihistamine alternative. Osthole may be a potential inhibitor of histamine H1 receptor activity.
  • HY-14289
    Cimetidine Antagonist >98.0%
    Cimetidine is a histamine-2 (H2) receptor antagonist.
  • HY-B0298A
    Clemastine fumarate Antagonist 99.82%
    Clemastine Fumarate is a selective histamine H1 receptor antagonist with IC50 of 3 nM.
  • HY-112067A
    Chlorcyclizine hydrochloride Antagonist 99.90%
    Chlorcyclizine hydrochloride is a histamine H1 antagonist.
  • HY-111501
    H4R antagonist 1 Antagonist
    H4R antagonist 1 is a potent and highly selective histamine H4 receptor (H4R) antagonist with an IC50 of 27 nM. H4R antagonist 1 does not show any noticeable binding affinity to other subtypes of histamine receptors, H1R, H2R, and H3R[1].
  • HY-114025
    H4 Receptor antagonist 1 Inhibitor
    H4 Receptor antagonist 1 is a potent and selective histamine H4 receptor inverse agonist, with an IC50 of 19 nM.
  • HY-12199B
    Pitolisant hydrochloride Antagonist 99.22%
    Pitolisant hydrochloride is a potent and selective nonimidazole inverse agonist at the recombinant human histamine H3 receptor (Ki=0.16 nM).
  • HY-15538
    Ebrotidine Antagonist
    Ebrotidine(FI 3542) is a competitive H2-receptor antagonist (Ki= 127.5 nM) with a potent antisecretory activity and evidenced gastroprotection.
  • HY-13508
    JNJ-7777120 Antagonist 99.96%
    JNJ-7777120 is a selective H4R antagonist with Ki of 4 ±1 nM, exhibits >1000-fold selectivity over the other histamin receptors.
  • HY-B0377
    Famotidine Antagonist 98.17%
    Famotidine is a competitive histamine H2-receptor antagonist.
  • HY-14270
    Lodoxamide Inhibitor 98.00%
    Lodoxamide is an antiallergic compound acting as a mast-cell stabilizer for the treatment of asthma and allergic conjunctivitis.
  • HY-B0539
    Desloratadine Antagonist 99.75%
    Desloratadine(Sch34117) is a potent antagonist for human histamine H1 receptor used to treat allergies.
  • HY-B0349
    Meclizine dihydrochloride Antagonist 99.97%
    Meclizine is a histamine H1 receptor antagonist used to treat nausea and motion sickness Target: Histamine H1 Receptor Meclizine is a histamine H1 receptor antagonist used to treat nausea and motion sickness, possesses anticholinergic, central nervous system depressant, and local anesthetic effects [1].
  • HY-17042A
    Cetirizine dihydrochloride Inhibitor 99.17%
    Cetirizine 2Hcl, a second-generation antihistamine, is a major metabolite of hydroxyzine, and a racemic selective H1 receptor inverse agonist used in the treatment of allergies, hay fever, angioedema, and urticaria.
  • HY-B0157A
    Ketotifen fumarate Inhibitor 99.92%
    Ketotifen (fumarate) is a second-generation noncompetitive H1-antihistamine and mast cell stabilizer, which is used to prevent asthma attacks.
  • HY-B0801A
    Fexofenadine hydrochloride Inhibitor 99.61%
    Fexofenadine is a third-generation antihistamine pharmaceutical drug used in the treatment of allergy symptoms, such as hay fever, nasal congestion, and urticaria.
  • HY-B0164
    Mizolastine Antagonist 99.33%
    Mizolastine is a histamine H1-receptor antagonist with IC50 of 47 nM used in the treatment of hay fever (seasonal allergic rhinitis), hives and other allergic reactions.
  • HY-B0781
    Promethazine hydrochloride Antagonist 99.82%
    Promethazine Hcl(NSC-231688) is the first-generation antihistamine; strong antagonist of the H1 receptor and moderate mACh receptor antagonist, moderate affinity for 5-HT2A, 5-HT2C, D2 and α1-adrenergic receptors.
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