Hence, we investigated the efficacy of AR inhibition in the prevention of allergic responses to a common natural airborne allergen, ragweed pollen that leads to airway inflammation and hyper-responsiveness in a murine model of asthma.
Instillation of chitin micro-particles into the airways significantly down-regulated allergic responses to Dermatophagoids pteronyssinus (Der p) and Aspergillus fumigatus including IgE levels, IL-4 production, eosinophilia, airway hyper-responsiveness, and lung inflammation [24].
The authors also report that, in a murine model of stress-induced decrease in progesterone, supplements of a progesterone derivative abrogated the increase in allergic airway responsiveness observed in prenatally stressed offspring.
As specific allergic immune responsiveness in atopic individuals is not typically limited to a single dominant epitope, careful mapping of the critical minimal set of immunodominant T cell epitope peptides is essential.
Remarkably, schoolchildren carrying this infection showed lower levels of allergic reactivity than their uninfected classmates, although both the parasite and the allergen evoke Th2 responsiveness 18.
The two missense SNPs (rs4986790, rs4986791) have been extensively studied and associated with allergic rhinitis, airway responsiveness, and asthma.
To determine whether hookworm larval migration through the lungs increases airway responsiveness in allergic individuals with measurable airway responsiveness but not clinical asthma, and investigate the general tolerability of infection and effect on allergic symptoms.
In view of the blunting of acute stimulated mucin secretion in SNAP23 Het mice, we examined whether SNAP23 Het mice would be protected against the airflow obstruction that occurs when WT mice with mucous metaplasia and smooth muscle hyper-responsiveness from allergic inflammation are exposed to a ligand that causes mucin secretion and smooth muscle contraction [ 3, 38].
Another recent study reported that PFOS exposure decreased baseline airway resistance but significantly increased airway responsiveness in an allergic murine model (Loewen et al. 2011).
