Clinical trials support a central role for TSLP in driving airway inflammation and asthma exacerbations, while ongoing trials blocking IL-33 and IL-25 will help to define their respective role in asthma.
Also, autophagy-deficient ILC2s were adoptively transferred into Rag<sup>-/-</sup>GC<sup>-/-</sup> mice, which were then challenged with IL-33 and assessed for AHR and lung inflammation.
Modulation of ILC2 function by miR-146a may depend on IL-33/interleukin 1 receptor-like 1 (IL1RL1 or ST2) signaling through inhibiting IRAK1 and TRAF6.miR-146a can inhibit IRAK1 and TRAF6, downstream molecules of ST2 signal pathway, thereby negatively regulate IL-33/ST2-activated ILC2 to inhibit asthma.
We conducted this study to evaluate the impact of the two most common SNPs of the IL-33 gene (rs1342326 and rs3939286) and environmental factors on the susceptibility to asthma in the Iranian population.
The level of IL33 was significantly higher in asthma and MS patients compared to the control group (P< 0.001- P<0.001).The frequency distribution of the genotype in rs1342326 variant of IL-33 gene in patients with asthma, MS and healthy subjects was not significantly different (P>0.05).
<b>Objective:</b> To develop a detection method for single nucleotide polymorphisms (SNPs) of bronchial asthma (BA) susceptibility genes (<i>IL-13</i>, <i>IL-33,</i> and <i>GSDMA</i>) based on fluorescence PCR melting curves.
The level of IL-33 was significantly higher in patients with asthma when compared to healthy subjects (672.73 ± 104.47 pg/mL vs 268.52 ± 27.56 pg/mL, P < 0.05).
We demonstrated that low PEF variability over 1 week, high serum IL-10 level, and low serum IL-33 concentration were useful factors for predicting that an adult's asthma will remain in control for months to years after a 50% reduction in the daily ICS dose.
IL-33 EBC levels were significantly increased in IPF (3.41 ± 0.55 pg/ml) compared to healthy controls (1.20 ± 0.60 pg/ml; P < .01) but did not differ from asthma (3.68 pg/ml) and COPD levels (2.47 ± 0.34 pg/ml).
Indeed, TSLP can condition dendritic cells to initiate type 2 responses, and IL-33 may influence susceptibility to asthma through its role in establishing the immune environment in the perinatal lungs.
Finally, the human and murine necroptosis inhibitor, GW806742X, blocked necroptosis and IL-33 release in vitro and reduced eosinophilia in Aspergillus fumigatus extract-induced asthma in vivo, an allergic inflammation model that is highly dependent on IL-33.
In particular, we will focus on the evidence for IL-33 in the development of immune responses in the lung, including the role of IL-33-responsive immune cells that may explain susceptibility to allergic sensitization at a young age and the association between genetic variants of IL-33 and asthma in humans.
The emergence of IL-33 as a key molecular player in the development and propagation of widespread inflammatory diseases, including asthma and atopic dermatitis, has established the need for effective IL-33-neutralizing biologics.
Interleukin-33 is released in the airways following acute ozone exposure and has the ability to cause airway hyperresponsiveness, a defining feature of asthma.
ST2 OE also enhanced HRV1B-induced IP-10, a chemokine involved in asthma exacerbations.In the <i>M. pneumoniae</i>-infected mouse model, ST2 deficiency, in contrast to sufficiency, significantly reduced the levels of neutrophils following acute (≤24 h) infection, while in the HRV1B-infected mouse model, ST2 deficiency significantly reduced the levels of proinflammatory cytokines KC, IP-10, and IL-33 in bronchoalveolar lavage (BAL) fluid.
Serum IL-25 and IL-33 levels were measured and the number of emergency admissions, length of hospitalization (day), 25(OH)D, Asthma Control Test (ACT) scores, eosinophil cationic protein (ECP), and fractional exhaled nitric oxide (FeNO) value were analyzed.