Q!

Prep for USMLE Forum

» Log in | Register

Forum

Step 1

Match

Prep4USMLE Forum » USMLE Step 1 Forum » Microbiology Forum

Author

9 Posts

namf
Forum Elite

Topics: 80
Posts: 312

08/01/04 - 09:58 PM

If you get a pruritic vesicular rash from poison ivy, which cells/mediators will this involve

Abs, complement5-9
immune complexes, complement C5a, neutrophils
Cytotoxic T lymphocytes
IgE, mast cells, histamine, cytokines
Lymphocytes, cytokines, macrophages

Thanks gang!

mash
Forum Fanatic

Topics: 147
Posts: 1,326

08/01/04 - 10:21 PM

type IV hypersensitivity---Th lymphocytes/macrophages/cytokines

___________________
I hear and I forget. I see and I remember. I do and I understand.
--Confucius

mdwannabe
Forum Guru

Topics: 37
Posts: 1,133

08/02/04 - 07:43 AM

T-CD8 cells

___________________
"Life not lived for others, is not worth living" Uncle Einstein
"A life is not important, except in the impact it has on other lives" -Jackie Robinson

mani
Forum Guru
avatar

Topics: 104
Posts: 1,403

08/02/04 - 04:46 PM

Lymphocytes, cytokines, macrophages

___________________
Sincerity and hard work are the keys to success!

dariush
Forum Elite
avatar

Topics: 20
Posts: 356

08/03/04 - 08:42 AM

this is called "Allergic Contact Dermatitis" which as everyone pointed out is a type IV HS. (diff. from ATOPIC DERMATITIS that is type I.)

___________________
Allah (God) is watching over us...

BumbleB
Forum Junior

Topics: 2
Posts: 83

08/07/04 - 12:18 PM

are you sure you mean cd8+ - thats Tc's

mani
Forum Guru
avatar

Topics: 104
Posts: 1,403

08/07/04 - 04:06 PM

i too thought i was delayed type reaction invoving cd4 cells. cd8 cells participate in tumor immunity, infected cell lysis and transplnat rejection etc etc

___________________
Sincerity and hard work are the keys to success!

Malaysian
Forum Guru

Topics: 28
Posts: 778

09/18/04 - 11:27 AM

Whats the answer!!!
I think its Type 4 hypersensitivity which is a CMI.....so CD8/cytotoxic T cells

dariush
Forum Elite
avatar

Topics: 20
Posts: 356

09/20/04 - 03:25 AM

"mani" wrote:
i too thought i was delayed type reaction invoving cd4 cells. cd8 cells participate in tumor immunity, infected cell lysis and transplnat rejection etc etc

no, CD-8 cells also take part in type IV.
also CD-4 Th-1 as well as cytokines. but since i don't assume any role for Lymphocytes in the whole reaction i go for CD-8/Cytotoxic.

___________________
Allah (God) is watching over us...

You don't have permission to post.