Perth (ddp). A walk in the Sun could help significantly reduce the symptoms of asthma. Australian researchers on mice suggests that. The typical for asthma inflammation in the Airways were reduced in the animals by moderate exposure to ultraviolet (UV) light, Hart discovered Prue and her colleagues. The Telethon Institute for child health in Perth reports on their work. The researchers irradiated mice that showed some symptoms of asthma like inflammatory bronchial tubes, for about 15 to 30 minutes with UV rays. Then they put out the animals substances, which normally trigger an allergic asthma reaction. They found that this reaction was significantly weaker after irradiation. In a second attempt, the researchers transferred certain cells of irradiated mice on non-irradiated. Also in these mice, the asthma symptoms were reduced. «It is shown that a controlled dose of UV radiation reduces the occurrence and the severity of asthma», Prue says Hart. The Sun’s rays could dampen the disproportionate immune reactions to allergenic substances in asthma attacks as a result, the researchers to interpret their results. In further studies, they want to investigate this combination of Sun and immune reactions more detail. Because UV radiation could cause also skin cancer, it comes on the right choice of a moderate dose of, to use the protective effect of the therapy of asthma, researchers say. In Australia people due to the high UV levels avoid the Sun in radiant Sun.