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KMID : 0356620130280040326
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Journal of Korean Society of Endocrinology
2013 Volume.28 No. 4 p.326 ~ p.330
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Recurrent Insulin Autoimmune Syndrome Caused by α-Lipoic Acid in Type 2 Diabetes
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Bae Sang-Mook
Bae Myoung-Nam
Kim Eun-Young
Kim Il-Kyu
Seo Min-Woo
Shin Jin-Kyeong
Cho Sung-Rae
Jeong Gui-Hwa
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Abstract
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Insulin autoimmune syndrome (IAS) is characterized by spontaneous hypoglycemia caused by insulin autoantibodies in the absence of exogenous insulin administration. Some drugs containing sulfhydryl compounds are known to initiate the onset of IAS. A 67-year-old female who had diabetes for 5 years visited the outpatient clinic at our institution due to diabetic peripheral polyneuropathy. She was prescribed α-lipoic acid (ALA), which contains two sulfur atoms. Two weeks later, she complained of recurrent hypoglycemic symptoms. We detected a high level of insulin and high titers of insulin autoantibodies. Her human leukocyte antigen (HLA) genotype included the DRB1*0406 allele, which indicates a high level of susceptibility to IAS. She was treated with prednisolone. After this episode, she experienced two more hypoglycemic events after taking ALA for diabetic neuropathy in other hospitals. As ALA can be used to treat diabetic peripheral polyneuropathy, physician discretion is advised based on the possibility of IAS due to ALA in diabetic patients.
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KEYWORD
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Alpha-lipoic acid, HLA-DRB1*0406 antigen, Insulin antibodies, Insulin autoimmune syndrome
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