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Antigen bands Specificityen • Comments     
 



Anti-Liver-Autoantibody-Immunoblots (IgG)


Here you see an Anti-Liver-Autoantibody-Immunoblot scanned with the AID-BlotScanning System

Immunoblot scanning result - Liver-Autoantibody Please click on the image to see enlarged version.


Liverblot


Cut off:
Standard settings:

IgG 20%

Freely adjustable as required.


Antigen:
Liver extract


The following bands are characterized:

AMA ( type M2) main band at 74 kD and additional subtypes  LKM (Liver-kidney-microsomal antigen, 
app. 50 kD)
  LP (liver pankreas, app. 51 kD)



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Specificity:

 
AMA M2:

Mitochondrial antibodies are directed against proteins of the inner and outer mitochondrial membrane. They are a highly sensitive and specific marker of primary biliary cirrhosis (PBC).
table



 
LKM:

The antibodies are directed against the so-called liver-kidney-microsomal antigen, the microsomal antigen from liver and kidney. They are used as a marker of autoimmune chronic active hepatitis.
 



 
LP:

The antibodies are directed against the liver pancreas antigen and appear in approx. 25 % of patients suffering from chronic active hepatitis. Anti-LP antibodies are also known as anti-SLA.
table



 
Comments:

In samples which are M2 positive, antibodies against the 74 kD band must be marked as the main band. The other bands (characterized as M2) can only be interpreted as M2 subtypes if the 74kD band is apparent.

Additional bands which appear at 54 kD and 52 kD lie very close to the LP and LKM band pattern. As M2 antibodies never appear simultaneously with anti-LP or anti-LKM, these cannot be confused.
A nonspecific reaction can occur near the 74 kD band.
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ANA/AMA-IgG
Anti-Borrelia burgdorferi-IgG
Anti-Borrelia burgdorferi-IgM
Anti-Campylobacter jejuni-IgG+A
Anti-Chlamydia pneumoniae-IgG+A+M
Anti-Chlamydia trachomatis-IgG+A
Anti-Cytomegalie-Virus-IgG+M
Anti-Epstein-Barr-Virus-IgG
Anti-Epstein-Barr-Virus-IgM
Anti-Helicobacter pylori-IgG+A
Anti-Herpes-simplex-Virus-1-IgG+M
Anti-Herpes-simplex-Virus-2-IgG+M
Anti-Liver-Autoantibodies
Anti-Toxoplasma-IgG+A+M
Anti-Treponema pallidum-G+A+M
Anti-Yersinia enterocolitica-IgG+A
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SEARCHSITEMAPE-MAIL Genom Identification Diagnostics GmbHIMPRESSUM