leukotriene receptor antagonists

leukotriene receptor antagonists

drugs that block the binding of leukotrienes to cysteinyl leukotriene T1 receptors, thus inactivating the action of leukotrienes.
See also: antileukotriene.
Farlex Partner Medical Dictionary © Farlex 2012

leukotriene receptor antagonists

Drugs that prevent the action of LEUKOTRIENES by blocking their receptors on cell membranes, such as those of smooth muscle. These drugs have a useful dual effect in relaxing the smooth muscle of the air passages (bronchi) and in combatting inflammation in the bronchial linings-both features of ASTHMA. They have also been found useful in hay fever. Examples are montelukast (Singulair) and zafirlukast (Accolate).
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
References in periodicals archive ?
KEYWORDS: Anti-leukotrienes, leukotriene receptor antagonists, Montelukast, CysLT, receptors, asthma, randomized controlled trial.
Participants, refractory to histamine j antihistamines and in many cases to leukotriene receptor antagonists as well, were randomized to omalizumab at 300 mg, placebo, or to ligelizumab at 24 mg, 72 mg, or 240 mg administered by subcutaneous injection every 4 weeks for 20 weeks.
Leukotriene receptor antagonists (LTRAs) are anti-inflammatories that exert their effects via different pathways than ICSs.
Further studies with guinea pigs and then primates resulted in the development of leukotriene receptor antagonists, the first new type of asthma treatment for 20 years."
Some asthma agents, such as montelukast, act as either leukotriene-related enzyme inhibitors (arachidonate 5-lipoxygenase) or leukotriene receptor antagonists. These drugs block production of inflammatory leukotrienes, which cause bronchoconstriction.
Bisgaard, "Effects of cysteinyl leukotrienes and leukotriene receptor antagonists on markers of inflammation," The Journal of Allergy and Clinical Immunology, vol.
The allergic rhinitis (AR) market has declined very slowly over the past decade, as has it become saturated with relatively efficacious standard therapies, such as antihistamines (AHs), intranasal corticosteroids (INCS), and leukotriene receptor antagonists (LRAs), and has also been facing increasing generic competition.
Gaddy et al., 15 showed that intravenous leukotriene receptor antagonists could produce a 22% improvement in [FEV.sub.1] from baseline in those with stable asthma with a baseline [FEV.sub.1] of 50%-80% predicted.
In contrast, sinonasal imaging should not be routine when patients first present with symptoms consistent with allergic rhinitis, and oral leukotriene receptor antagonists are not recommended as first-line therapy, said Dr.
A competitive binding immunoassay procedure (Correlate-EIA; Assay Designs Inc., Ann Arbor, MI, USA) was used to measure LT[B.sub.4] in the supernatants of neutrophils activated with the chemoattractant, platelet-activating factor (PAF, 200 nM), in the absence and presence of the leukotriene receptor antagonists (0.5 and 1 [micro]M).
Most commonly it is treated symptomatically along with the drugs such as antihistamines, analgesics, antibiotics, steroids and leukotriene receptor antagonists. On average each patient spends around PKR 1000-3000 on its treatment.1 A number of home remedies are available to treat nasal congestion and throat discomfort, including plentiful supply of fluids to thin the mucus, using saline nasal sprays to keep the nasal passages hydrated, and using various decongestants.
Combination therapy typically involves antihistamines to block the histamine released from mast cells and basophils, LTRAs (leukotriene receptor antagonists) to block leukotrienes, and nasal corticosteroids to block the various inflammatory mediators that participate in allergic reactions.