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Q immuno

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drswapna

Forum Senior

Topics: 52
Posts: 129

Jan 26, 2006 - 2:52 PM

A traveler to a foreign country develops acute lymphatic filariasis
four months after his return to the United States. His symptoms include
scrotal inflammation, itching, and localized scrotal swelling and
tenderness of the inguinal lymph nodes. Which of the following immune
mechanisms does the body employ against the live filarial worms ?
A. Antibody-dependent cell-mediated cytotoxicity
B. Anti-receptor antibodies
C. Arthus reaction
D. Complement-mediated reactions
E. Deposition of circulating antigen-antibody complexes

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reet

Forum Guru

Topics: 152
Posts: 1396

Jan 26, 2006 - 3:24 PM

A??

doc179

Forum Guru

Topics: 67
Posts: 1213

Jan 26, 2006 - 4:02 PM

skyhigh

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Posts: 558

Jan 26, 2006 - 4:31 PM

elisamik

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Posts: 39

Jan 27, 2006 - 11:04 AM

krsna

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Jan 28, 2006 - 10:38 AM

Natasa

Forum Elite

Topics: 9
Posts: 290

Jan 30, 2006 - 1:58 AM

It's an IgE dependent cytotoxic reaction which is also caracterizes by presence of high levels of eosinophils.IgE does NOT bind complement.(IgM and IgG do)

So,my answer would be A.

doc179

Forum Guru

Topics: 67
Posts: 1213

Jan 30, 2006 - 10:41 AM

in kaplan videos I remember in immunology she said IgG is the only antibody that is responsible for ADCC

doc179

Forum Guru

Topics: 67
Posts: 1213

Jan 30, 2006 - 10:55 AM

http://www.cehs.siu.edu/fix/medmicro/hyper.htm
http://www.cehs.siu.edu/fix/medmicro/igs.htm

doc179

Forum Guru

Topics: 67
Posts: 1213

Jan 30, 2006 - 10:59 AM

#10

in the first link the sentence I wanted to emphasise on is the following;
Type II or Cytotoxic Hypersensitivity also involves antibody-mediated reactions. However, the immunoglobulin class (isotype) is generally IgG. In addition, this process involves K-cells rather than mast cells

doc179

Forum Guru

Topics: 67
Posts: 1213

Jan 30, 2006 - 11:24 AM

#11

ok the ans can be A as there is one document which states that there are IgG antibodies to the antigens of this worm. I am confused...

Natasa

Forum Elite

Topics: 9
Posts: 290

Jan 31, 2006 - 1:31 AM

#12

In Levinson book-you have IgE and ADCC...

I am still waiting for my ordered Kaplan,so I can not look it up over there...

But I would go with A,as it is the only thing that makes sense here.

coolmavs

Forum Guru