Objective To investigate the levels of IL-33 in the lung induced by Aspergillus fumigatus (A.fumigatus) exposure in bronchial asthmatic rats and the effects of dexamethasone.Methods Twenty-four Wistar rats were randomly and equally divided into group A (normal control),group B (asthma group),group C (A.fumigatus-exposed group),and group D (dexamethasone-treated group).B,C and D group were sensitized and challenged with ovalbumin (OVA) to establish asthmatic models.Then,group C and D were given A.fumigatus spores intranasally.Group D was pre-treated with dexamethasone during ovalbumin challenge.Group A was sensitized and challenged intranasally with normal saline as control.Airway hyperresponsiveness,eosinophils percentage and serum IgE levels were measured to confirm the establishment of asthmatic model.Expression of IL-33 in the lung were quantified by ELISA and qRT-PCR.Lung tissues and blood were plated on the potato dextrose agar (PDA) medium and cultivated for 24 h to measure the number of colony.Results Eosinophils percentage in bronchoalveolar lavage fluid (BALF),IgE levels in serum and IL-33 levels in the lung in group B and C were much more higher than in group A (P＜0.05),and the increasing range in group C was more obvious than group B.However,the changes of sRaw values in these groups had no statistical significance.Esosinophils percentage in BALF and IL-33 levels in the lung were significantly decreased (P＜0.05),and IgE levels in serum was slightly decreased (P＞0.05) in group D when compared with group C,but the ratio of A.fumigatus colonization in the lung was higher than group C.Conclusions Dexamethasone can inhibit the expression of IL-33 in the lung induced by A.fumigatus exposure in an asthmatic rat,but it also increases the risk of fungal colonization in the airway.Anti-IL-33 antibody treatment needs further research.

Dialysis patients become more and more with the development of dialysis technology , but their quality of life is menaced by all kinds of complications which resulted in physical and psychological dysfunction . However, exercise therapy may help patients return social.

ObjectiveTo observe the effect of exercise training on chronic obstructive pulmonary disease (COPD) stable patients in community. MethodsTraditional Chinese exercise prescription was given to 20 COPD patients. They were assessed with 6-minute walk distance (6MWD), the Borg scale and the St. George's Respiratory Questionnaire (SGRQ) before and after the training. ResultsThe Borg scales dropped from (4.45±2.04) to (3.15±2.13) （P＜0.05）. 6MWD increased from (370.32±74.48) m to (403.75±76.15) m （P＜0.05）. SGRQ scores also showed statistical significant difference （P＜0.05）. ConclusionExercise training can improve the tolerance and decrease dyspnea in COPD patients in stable stage. It also can improve the quality of life.

10.3969/j.issn.1007-3969.2013.05.002