Aims/Background: Several clinical trials have demonstrated that strict glycemic control is important to minimize the risk of diabetic complications. Although frequent measurement of blood glucose levels by the invasive finger prick method is useful to achieve strict glycemic control, this method is invasive and burdensome to the patients. Glycated albumin (GA) is a biomarker which reflects the glycemic control status over the previous 2 weeks. We demonstrated GA levels in tears correlated those in blood. We hypothesized that regular GA tests in tears caused behavior change and improved glycemic control.

Methods: Participants with type 2 diabetes were recruited and randomly divided to two groups. One group (intervention group) was performed tear GA tests every 2 weeks and reported the results, while the other group (control group) was not. After 8 weeks of intervention, the two groups were compared. GA levels in tears were measured by Liquid Chromatography / Mass Spectrometry.

Results: We enrolled 56 participants to the study. Compared with the control group, the intervention group showed improvement in fasting blood glucose, HbA1c, GA, non-HDL cholesterol.

Conclusions: Levels of GA, as a diabetes-related biomarker, in tears can be measured noninvasively. Regular measurement of the GA levels in tears could allow smoother management of diabetes mellitus and reduce the risk of complications noninvasively.


M.Aihara: None. N.Kubota: None. T.Yamauchi: Other Relationship; Mitsubishi Tanabe Pharma Corporation, Takeda Pharmaceutical Company Limited, Novo Nordisk, Astellas Pharma Inc., AstraZeneca, Ono Pharmaceutical Co., Ltd., Nippon Boehringer Ingelheim, Kyowa Kirin Co., Ltd., Kowa Company, Ltd., Merck & Co., Inc., Sanofi, Sanwa Kagaku Kenkyusho, Shionogi & Co., Ltd., Daiichi Sankyo, Taiho Pharmaceutical Co. Ltd., Tosoh Corporation, Eli Lilly Japan K.K., Kissei Pharmaceutical Co., Ltd., Sumitomo Dainippon Pharma Co., Ltd., NTT Docomo Inc., Aero Switch, Asahi Mutual Life Insurance Company, NIPRO Medical Corporation, Abbott Japan Co., Ltd., Bayer Inc., Kyorin Pharmaceutical Company, Limited.

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