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小儿支原体肺炎是由肺炎支原体引起的一种常见的感染性疾病。近年来随着诊断学、免疫学等多学科的进展,对小儿支原体肺炎有了许多新的认识。一、病原学及免疫学的特点支原体是一类最小的独立生存的微生物,自然界已发现50余种,对人体有致病性的支原体已分离出12种,其中引起肺炎的只有肺炎支原体。肺炎支原体体内含有40～60蛋白,10～20％脂质,其余为不同含量的碳水化合物。肺炎支原体的细胞膜由三层组成,中心为脂质、内外为蛋白质,膜厚度为7.5～10nm。与细菌不同,支原体没有硬的细胞壁,因此,障碍细菌细胞壁合成的抗菌素如青霉素对支原体无作用。肺炎支原体体内含有DNA、
Mycoplasma pneumonia in children is caused by Mycoplasma pneumoniae is a common infectious disease. In recent years, with advances in diagnostics, immunology and other disciplines, there are many new understandings of pediatric mycoplasma pneumonia. First, the characteristics of etiology and immunology Mycoplasma is a kind of minimal independent living microorganisms, more than 50 species have been found in nature, the body has mycoplasma pathogenic 12 species have been isolated, including pneumonia caused by only Mycoplasma pneumoniae. Mycoplasma pneumoniae body contains 40 to 60 protein, 10 to 20% lipid, the rest of the different levels of carbohydrates. Mycoplasma pneumoniae cell membrane consists of three layers, the center of lipid, both inside and outside the protein, the membrane thickness of 7.5 ~ 10nm. Unlike bacteria, mycoplasma does not have a hard cell wall, so antibiotics, such as penicillin, that interfere with bacterial cell wall synthesis have no effect on mycoplasma. Mycoplasma pneumoniae body contains DNA,