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Old 10-07-2011, 02:51 AM   #1
hjzps1748
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Default 春季如何预防花粉过敏

在自然界,健尔马足疗机官方网,花粉是一种主要的致敏原。每当春暖花开之季最容易引起花粉过敏的多为种子树,如枸树、蓖麻、地肤、法国梧 桐居多,这些植物花粉量大体积小,空气中含量高,在风起的日子更容易传播,所以春天郊游时出现花粉过敏者更 多。
花粉中含有的油质和多糖物质被人吸入后,可被鼻腔黏膜的分泌物消化,随后释放出十多种抗体,如果这种抗体和 入侵的花粉相遇,并大量积蓄,就会引起过敏,快速电热水龙头
据专家研究表明,其主要原因有两个方面:一方面是由于人们生活水平的提高,在饮食中摄入了大量的鸡蛋、肉制 品等高蛋白、高热量饮食,结果导致体内产生抗体的能力亢进,因而遇到花粉等抗原时,就更容易发生变态反应。 另一方面是因为大气污染、水质污染及食品添加剂的大量应用,导致人体接触更多的抗原物质,促使人类发生变态 反应性疾病。

花粉直径一般在30~50微米左右,它们在空气中飘散时,极易被人吸进呼吸道内。有花粉过敏的人吸入这些花 粉后,www.huangjinbei.com,会产生过敏反应,这就是花粉过敏症。花粉过敏症的主要症状为打喷嚏、流鼻涕、流眼泪,鼻、眼及外耳道奇痒 ,严重者还会诱发气管炎、支气管哮喘、肺心病(多发在夏秋季)。花粉之所以会引起人体过敏,是由于花粉内含 有丰富的蛋白质,其中某些蛋白质成分是产生过敏的主要致敏原。
皮肤接触花粉过敏的症状是皮肤出现红斑、丘疹、细小鳞屑,有瘙痒感或灼热感,www.sysbeijing.com,多为在野外皮肤接触花粉后受阳光照射引起。
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