化脓性链球菌

化脓性链球菌 脓脓脓脓脓化性球菌 [脓脓本段]脓介 　　脓球菌(Streptococcus)脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓是化性球菌的另一常的菌,广泛存在于自然界和人及物便和健康人鼻咽部,引起各化性炎症,猩,丹毒,新生儿血症,膜炎,褥以及球菌反脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓 脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓性疾病等。　　胞沿一个平面分裂,常排列成状的菌。革 氏染色阳性,但在旧培基或液本中常呈性。广泛分布于自脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓 然界。分致病性和非致病性两大。根据在血脂培基上的脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓 溶血特征可分三不同型:甲型，脓脓脓脓脓脓脓脓脓脓脓α脓脓脓脓脓脓脓脓脓脓脓脓脓,溶血性球菌又称草色球菌,菌 落周出草色溶血,通常寄居在人的口咽腔、呼吸道及道中,致病力弱。乙型，脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓β,溶血性球菌生脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓烈的溶血毒素,在血脂培基上,可使菌落周出强2,4毫米、界限分明、无色透明的溶血,致病力脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓,能引起人多疾病、根据抗原构造不同,又分成A强、B、C、D等18个群,在每一群中,因面抗原的不同,又分成若干群,人有致病性的大多数属于脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓A群。丙型，γ脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓,球菌不溶血,人无致病作用。球菌所致疾病具有 脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓而多的特点,一方面,由于菌型多,且既有侵力也 有毒素,另一方面,人体各器官均高度易感,且有反机制参与脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓 脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓病。球菌生的侵性有:透明酸、球菌激和道，streptodornase脓脓,等,生的毒素有:球菌溶血素、斑毒素，一耐的外毒素,又叫猩毒素,由脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓A脓脓脓群球菌中的部分菌株所生,。反性疾病如脓脓脓脓脓脓脓脓脓脓脓脓脓湿脓、急性小球性炎等,均可由脓脓脓脓脓脓脓脓脓脓脓A脓脓脓脓群球菌感染引。脓脓 [脓脓本段]脓脓抗原构 　　主要有三:　　脓 1,核蛋白抗原或称P脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓抗原,无特异性,各球菌均同,与葡萄球菌有交叉 　　2,多糖抗原或称C脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓抗原系族特异性抗原,是菌壁的成成份。人致病的90%属于A族,其次脓B脓 族,其它族少。　　3脓脓脓脓脓脓脓脓,蛋白抗原或称表面抗M、R、T、S脓脓脓脓脓脓等四不同性制的抗原份,具有型特异性。是球菌胞壁的蛋白抗原,位于脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓C脓脓脓脓脓脓抗原外,同族球菌可根据表面抗原不同行分型,如脓脓脓脓脓脓A脓脓脓脓脓脓脓脓族状菌可据此分60 多型。　　按C脓抗原不同可分A、B、C、D、E、F、G、H、K、L、M、N、O、P、Q、R、S、T等18脓脓脓脓脓个族。人致病的大多属于A族。A脓脓脓脓脓脓脓脓族又称化性球菌，Pyogenicstreptococcus ,。 [脓脓本段]脓脓脓脓形与染色 　　本菌革阳性菌,呈状排列,的短与菌的及境有脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓 脓脓脓脓脓脓脓脓脓 ,在液体培基中易成。 [脓脓本段]脓脓脓培特性 　　在血平板上可形成灰白色、形、凸起、小菌落,菌落周出透明溶血。脓脓脓脓脓脓 脓脓脓脓脓脓　　化性 球菌可以皮口或空气沫播引起化性感染脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓,脓脓如淋巴炎.淋巴管炎.脓脓脓蜂炎.脓.脓脓脓脓疱等局部皮及皮下感染以及扁桃体炎脓脓脓脓脓脓脓脓脓脓脓脓脓脓.咽炎.中耳炎.脓脓脓脓脓脓脓脓脓脓脓脓褥等其他系化性感染. 脓脓脓脓　　化性球菌是致病力最的一球菌,能生多毒素，球菌溶素强脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓O和S脓脓脓脓脓脓、疹毒素,、M蛋白、脂磷壁酸和激、道、透明酸等致病因子,可引起急性咽脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓 炎、呼吸道感染、丹毒、疱病、感染、心内膜炎和膜炎等,毒株可引起猩等。脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓脓