Cau 48: Cac yeu to tao nen doc luc cua VK Tu cau vang:

1/ Doc to ruot: La nhung prtein tuong doi chiu nhiet => ko bi fan huy boi dun nau, gom 6 typ tu A den F dc fan biet ha ro rang mac du giua chug co KN cheo.

- Co che gay benh: Kich thich tao 1 luong lon interleukin I,II

2/ Doc to gay hoi chung shock nhiem doc(TSST): Thg gap o fu nu co kinh dug bong bang ban or nhung ng bi nh.trung vet thuong. TSST kho fan biet voi enterotoxin.

- Co che gay shock: Tuong tu ngoai doc to, TSST kich thich giai fong TNF va interleukin I va II.

3/ Exfolialintoxin: Ngoai doc to la polypeptid,gom 2loai A&B co tinh dac hieu KN rieng biet, no gay nen hoi chung fong rop va choc lo da o tre em ,KT dac hieu co tdug trung hoa

4/ Alphatoxin: la Pr gan tren mang tb va thuc hien cac thuoc tinh be mat .no gay tan bao bach cau da nhan va tieu cau ->gay ra cac o ap xe,hoai tu da va tan mau.alphatoxin co tinh KN nhung KT cua no ko co tdug chong nhiem khuan.

5/ doc to bach cau(leucocidin) chi gay doc cho bach cau ng va tho ,gom 2manh F va S co the tach roi =sac ki ion .tach roi 2manh ->mat k/nag gay doc

6/ ngdt sinh mu (pyogenic exotoxin) tuong tu pyogenic exocoxin cua lien cau,co tdug sinh mu va fan bao lymphocyt, dong thoi lam tang nhay cam ve 1so fan giai dien dvoi ndt nhu gay soc ,hoai tu co gan va co tim.co 3loai pyogenic exotoxin khac ve trong luong ptu va tinh dac hieu KN nhung giong nhau ve khnang sinh mu va fan bao

7/dug huyet to (hemolysin) 4loai hemolysin ( ,(, ( va (.co t/chat khac nhau

-( :nguon goc tu ng ,nhay cam voi hong cau cua tho va cuu, voi bach cau of tho va ng

-( nguon goc tu dvat ,nhay cam voi hcau cuu ,ng va bo ,ko nhay cam voi bcau

-( nguon goc tu ng ,nhay cam voi hcau ,voi bcau k ro

-( nguon goc tu ng ,nhay cam voi hcau va bcau

7/ firibrinolysin: la enzym dac trung cho cac chung gay benh o ng, giup tu cau tag trog cac cuc mau gay vo cac cuc mau ->tac mach

9/ coagulase: lam dg huyet tag khi da dc chong dong ->tao cuc mau dg xung quanh TBVK->tranh dc tdug cua KT va thuc bao ,gay viem tac mao mach

10/ hyaluronidase: enzym fan giai acid hyaluronic cua mo lien ket ->giup vk lan tran vao mo

11/(-lactamase fa huy cau truc cua phan tu KS => KS nhom(-lactam mat tac dug