A non-invasive screening technique for type 1 autoimmune pancreatitis

Feng Gao; Qicai Liu; Zhi-bo Zhang; Guozhong Liu; Ruiqing Chen; Jing Chen; Sheng Zhang

doi:10.5114/wiitm.2014.44290

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abstract:

Original paper

A non-invasive screening technique for type 1 autoimmune pancreatitis

Feng Gao

,

Qicai Liu

,

Zhi-bo Zhang

,

Guozhong Liu

,

Ruiqing Chen

,

Jing Chen

,

Sheng Zhang

Videosurgery Miniinv 2014; 9 (4): 517–522

DOI: https://doi.org/10.5114/wiitm.2014.44290

Online publish date: 2014/07/28

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Introduction: Type 1 autoimmune pancreatitis (AIP) is the pancreatic manifestation of a systemic fibroinflammatory IgG4-related disease. Accurate diagnosis of AIP can avoid major hepatobiliary and pancreatic surgery as it respond dramatically to corticosteroid therapy.

Aim: This research investigated the feasibility of using peripheral blood cell immunohistochemistry, serum IgG4, T-cell receptor (TCR) and serum isoelectric focusing electrophoresis in the screening of type 1 autoimmune pancreatitis (AIP).

Material and methods: The peripheral blood from 3 type 1 AIP patients, 10 pancreatic cancer patients and 40 normal controls was collected. Sediment smears were jointly incubated with anti-IgG4 and anti-IgG. The percentage of IgG4/IgG positive cells was counted and serum TCR and IgG4 were detected through the whole process. After serum isoelectric focusing electrophoresis, anti-IgG4 and anti-IgG were used to confirm the components of serum.

Results: In the serum isoelectric focusing electrophoresis, IgG4 and IgG strips showed mirrored distribution in type 1 AIP patients, while there were no strips in the normal controls and pancreatic cancer. Compared with pancreatic tumor patients and healthy controls, serum TCR was significant increased in AIP. The percentage of IgG4/IgG positive cells of peripheral blood cell immunohistochemistry was related to serum IgG4 and hormone therapy reactions.

Conclusions: Peripheral blood cell immunohistochemistry, serum IgG4, TCR and serum isoelectric focusing electrophoresis is suitable for the screening of type 1 AIP and monitoring its response assessment.

keywords:

A non-invasive screening technique for type 1 autoimmune pancreatitis

Feng Gao , Qicai Liu , Zhi-bo Zhang , Guozhong Liu , Ruiqing Chen , Jing Chen , Sheng Zhang

type 1 autoimmune pancreatitis, peripheral blood cell immunohistochemistry, serum IgG4, TCR, serum isoelectric focusing electrophoresis

Feng Gao

,

Qicai Liu

,

Zhi-bo Zhang

,

Guozhong Liu

,

Ruiqing Chen

,

Jing Chen

,

Sheng Zhang