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Table 2 Antiendomysial (EmA) and transglutaminase-2 antibody (TG2-ab) secretion to organ culture supernatants after in vitro PT-gliadin challenge. Organ culture of treated celiac disease patient biopsy samples (n = 11) who had small-bowel mucosal IgA deposits. Small-intestinal biopsy samples were cultured either with medium only or with PT-gliadin for 24 or 48 hours. EmA titers were graded according to intensity of staining as follows: negative (neg), weak positive (+) and strong positive (++, +++ or ++++).

From: Secretion of celiac disease autoantibodies after in vitro gliadin challenge is dependent on small-bowel mucosal transglutaminase 2-specific IgA deposits

  

EmA

 

TG2-ab (U)

Patient

GFD years

Medium 24 h

PT-gliadin24 h

PT-gliadin 48 h

 

Medium 24 h

PT-gliadin 24 h

PT-gliadin 48 h

1

1

++

+++

++++

 

11.0

17.1

37.8

2

1

++

++

+++

 

7.3

11.8

30.3

3

1

++

++

+++

 

16.0

6.3

26.6

4

1

+

++

+++

 

12.4

13.4

9.5

5

1

++

neg

++

 

17.2

7.4

22.9

6

1

neg

++

++

 

6.5

13.1

19.9

7

1

neg

neg

+

 

7.6

5.9

24.5

8

2

neg

+

++

 

7.8

5.3

14.8

9

3

+

++

++++

 

21.0

10.3

30.9

10

3

neg

++

++

 

4.9

7.0

nd

11

4

++

++

nd

 

24.5

11.9

nd

Median

 

+

++

+++*

Median

11.0

10.3

24.5†

  1. nd = not determined
  2. GFD = gluten-free diet
  3. * P < 0.01; † P = 0.011 compared to medium only 24 hours and PT-gliadin 24 hours.