Association between beta cell function and future glycemic control in patients with type 2 diabetes

Yoshifumi Saisho, Kinsei Kou, Kumiko Tanaka, Takayuki Abe, Akira Shimada, Toshihide Kawai, Hiroshi Itoh

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


The aim of this study was to clarify the association between C-peptide immunoreactivity (CPR), a marker of beta cell function, and future glycemic control in patients with type 2 diabetes. We conducted a retrospective analysis of 513 consecutive patients with type 2 diabetes who were admitted to our hospital between 2000 and 2007 and followed up for 2 years. Serum and urinary CPR levels were measured during admission, and CPR index was calculated as the ratio of CPR to plasma glucose. The associations between these markers at baseline and glycemic control after 2 years were assessed by means of logistic regression models. After 2 years, 167 patients (32.6%) showed good glycemic control (HbA1c <6.9%). Baseline serum and urinary CPR indices were significantly associated with good glycemic control after 2 years, and the postprandial CPR to plasma glucose ratio (postprandial CPR index) showed the strongest association (odds ratio (OR) 1.29, 95% confidence interval (CI) 1.12-1.50, P = 0.001) among CPR indices. Multivariate analyses showed consistent results (OR 1.23, 95%CI 1.03-1.48, P = 0.021). In conclusion, preserved beta cell function at baseline was associated with better glycemic control thereafter in patients with type 2 diabetes.

Original languageEnglish
Pages (from-to)517-523
Number of pages7
JournalEndocrine journal
Issue number4
Publication statusPublished - 2013 May 7


  • Beta cell function
  • C-peptide
  • Glycated hemoglobin
  • Type 2 diabetes

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Endocrinology


Dive into the research topics of 'Association between beta cell function and future glycemic control in patients with type 2 diabetes'. Together they form a unique fingerprint.

Cite this