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Increased stress protein ORP150 autoantibody production in Type 1 diabetic patients
Author(s) -
Nakatani Y.,
Kaneto H.,
Hatazaki M.,
Yoshiuchi K.,
Kawamori D.,
Sakamoto K.,
Matsuoka T.,
Ogawa S.,
Yamasaki Y.,
Matsuhisa M.
Publication year - 2006
Publication title -
diabetic medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.474
H-Index - 145
eISSN - 1464-5491
pISSN - 0742-3071
DOI - 10.1111/j.1464-5491.2005.01766.x
Subject(s) - autoantibody , medicine , unfolded protein response , endocrinology , diabetes mellitus , type 2 diabetes , type 1 diabetes , endoplasmic reticulum , immunology , antibody , biochemistry , chemistry
Aims Various genetic and environmental stresses interfere with protein folding in the endoplasmic reticulum (ER), which leads to the induction of ER stress. It has recently been reported that ER stress is involved in the development of diabetes in diabetic animal models. The aim of this study is to estimate ER stress levels in Type 1 diabetic patients. Methods We recruited Type 1 diabetic patients undergoing periodic follow‐up examinations ( n = 91) and healthy non‐diabetic individuals ( n = 37), and measured their serum anti‐oxygen‐related protein (ORP)150 autoantibody levels. Results Anti‐ORP150 autoantibody levels in Type 1 diabetic patients were significantly higher compared with those in healthy non‐diabetic subjects. Furthermore, the serum autoantibody levels in Type 1 diabetic patients correlated with HbA 1c ( F > 3.0, P = 0.079), indicating that hyperglycaemia itself induces ER stress in diabetes. Conclusions Anti‐ORP150 autoantibody levels in Type 1 diabetic patients are higher compared with non‐diabetic subjects, suggesting that ER stress is increased in Type 1 diabetes.