antiallergic

Hesperidin (Cirantin) is a flavanone glycoside found in citrus fruits with antioxidant, anti-inflammatory, anti-carcinogenic, and antihypertensive and lipid-lowering activity.

Ebastine (Kestine) (trade names Evastin, Kestine, Ebastel, Aleva) is a non-sedating H1 antihistamine. It does not penetrate the blood-brain barrier and thus allows an effective block of the H1 receptor in peripheral tissue without a central side effect, i. e not causing sedation or drowsiness.

Rhapontigenin (Protigenin) is a mechanism-based, selective inactivator of cytochrome P450 1A1 (IC50: 400 nM), an aryl hydrocarbon hydroxylase which activates polycyclic aromatic hydrocarbons that act as procarcinogens. Rhapontigenin is a natural analog of resveratrol with antioxidant and anti-cancer activity. At higher concentrations, rhapontigenin inhibits the proliferation of HL-60R and HepG2 cancer cell lines (IC50: 48 μM).

PHYTOL (trans-Phytol) , a diterpene alcohol from chlorophyll widely used as a food additive and in medicinal fields, shows antinociceptive and antioxidant activities as well as anti-inflammatory and antiallergic effects. It is a specific activator of PPARα.

Emedastine (LY188695) is a second generation, selective histamine H1 receptor antagonist with anti-allergic activity. Emedastine reversibly and competitively blocks histamine by binding to H1 receptors, thus blocking its downstream activity. As a result this agent interferes with mediator release from mast cells either by inhibiting calcium ion influx across mast cell/basophil plasma membrane or by inhibiting intracellular calcium ion release within the cells. In addition, emedastine may also inhibit the late-phase allergic reaction mediated through leukotrienes or prostaglandins, or by producing an anti-platelet activating factor effect. Upon ocular administration, emedastine causes a dose-dependent inhibition of histamine-stimulated vascular permeability in the conjunctiva. Emedastine does not affect adrenergic, dopamine, or serotonin receptors.

1. Corydaline (Corydalin), an isoquinoline alkaloid, is one of the major active constituents in a new prokinetic botanical agent. 2. Corydaline promotes gastric emptying and small intestinal transit and facilitates gastric accommodation. 3. Corydaline exhibits the anti-acetylcholinesterase, antiallergic, and antinociceptive activities. 4. Corydaline has potent inhibition of CYP2C19 and CYP2C9.

Fenoterol is an agonist of β2-adrenergic receptor It is classed as sympathomimetic beta agonist and asthma medication.

Gossypin has antidiabetic, antioxdiant, anticonvulsant, anti-allergic, antiinflammatory, antinociceptive, cytotoxic and antibacterial activities; it inhibits the NF-kappaB activation pathway, which may explain its role in the suppression of inflammation,

Antiallergic agent-1, an Src family kinase inhibitor, is a new and valuable lead compound with potential as an anti-allergic agent.

Costunolide (Costus lactone) has anti-inflammatory and anti-oxidant properties and mediates apoptosis.

Rabdosiin ((+)-Rabdosiin) is a natural product, and has anti-allergic activity, anti-HIV activity and inhibition on DNA topoisomerase.

Xanthone (Xanthenone) is currently used as ovicide for codling moth eggs and as a larvicide.

Syk inhibitor II, a cell-permeable, ATP-competitive, pyrimidine-carboxamide compound, selectively and reversibly inhibits Syk (IC50 = 41 nM).

Rutin (Quercetin 3-O-rutinoside), a flavonoid, has a variety of biological activities including antiallergic, anti-inflammatory, antiproliferative, and anticarcinogenic properties.

AS-35 is an orally effective, potent, and selective antagonist of leukotrienes, antagonizing LTC4-, LTD4-, and LTE4-induced ileum contractions with IC50 values of 8 nM, 4 nM, and 3 nM, respectively. It exhibits antiallergic activities.

Oxatomide (Oxatomida) is a potent and orally active dual H1 histamine receptor and P2X7 receptor antagonist with antihistamine and antiallergic activity.Oxatomide can be used to block ATP-induced currents in the human P2X7 receptor with an IC50 value of 0.95 μM.Oxatomide has an inhibitory effect on ATP-induced Ca2+ inward currents with an IC50 value of 0.43 μM.Oxatomide inhibits 5-hydroxytryptamine. Oxatomide inhibits 5-hydroxytryptamine with an IC50 of 0.43 μM.Oxatomide is used in the treatment of immune system diseases and in the study of hypersensitivity reactions.

Elbanizine showed antiallergic, antiasthmatic, antihistaminic, and spasmolytic activity.

Pirodomast is a thromboxane A (TXA2) synthase inhibitor. Pirodomast inhibits leukotriene (LT) D4, C4, E4 formation and thromboxane B2 (TXB2) activity, but is weakly or ineffectively antagonistic to guinea pig bronchospasm induced by histamine, methacholine, serotonin, LTC4, or platelet-activating factor. Pirodomast is a potential antiallergic compound. Pirodomast had only weak relaxant activity on guinea pig trachea in vitro. Pirodomast is a potential antiallergic compound that inhibits the protein hydrolyzing activity of trypsin in vitro, prevents antigen-induced immediate and late asthmatic responses in allergic sheep in vivo, and inhibits antigen-induced airway hyperresponsiveness to histamine and carbachol in allergic sheep.

Picumast shows antiallergic activity and can be utilized in the treatment of asthma. Picumast may be used in the treatment of therapeutic allergic airway diseases.

Luteolin (Luteolol) belongs to the flavonoid group of natural products and is a Nrf2 inhibitor, PDE inhibitor. Luteolin has a wide range of biological activities including antitumor, antioxidant, anti-inflammatory, antimicrobial, antiviral, antiallergic, and procoagulant.

Pemirolast Potassium is the potassium salt form of pemirolast, a pyrimidinone derivative with antiallergic property. Pemirolast potassium (TWT-8152) exerts its action by blocking the antigen-mediated calcium ion influx into mast cells.

Trans-Tranilast is an antiallergic drug developed by Kissei Pharmaceuticals. It was approved in 1982 for use in Japan and South Korea for bronchial asthma. Indications for keloid and hypertrophic scar were added in 1993. It has been used for the treatment of allergic disorders such as asthma, allergic rhinitis and atopic dermatitis.

Tranilast (SB 252218), an antiallergic drug, suppresses lipid mediator and cytokine release from inflammatory cells, therefore utilized in the treatment of allergic disorders.

Ammonium glycyrrhizinate (Glycyrram) exhibits diverse pharmacological properties, including anti-inflammatory, antiallergic, antigastriculcer, and antihepatitis activities.