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Undercarboxylated osteocalcin can predict insulin secretion ability in type 2 diabetes
Yuichi Takashi1, Minae Koga1, Yoko Matsuzawa1
1Endocrinology and Diabetes Center, Yokohama Rosai Hospital, Yokohama City, Kanagawa, Japan.
Undercarboxylated osteocalcin (ucOC) levels correlate with insulin secretion capacity in type 2 diabetes patients. This finding suggests ucOC may indicate remaining beta-cell function in individuals with diabetes.
Area of Science:
- Endocrinology
- Metabolic Disorders
- Bone Metabolism
Background:
- Diabetes mellitus is linked to bone metabolism alterations, including undercarboxylated osteocalcin (ucOC).
- Limited data exists on the relationship between ucOC and glucose metabolism in type 2 diabetes (T2D).
Purpose of the Study:
- To investigate the association between ucOC and insulin secretion in Japanese patients with T2D.
- To evaluate ucOC's role in reflecting beta-cell function reserve.
Main Methods:
- Recruited 50 Japanese patients diagnosed with T2D.
- Assessed insulin secretion using glucagon loading tests and meal tolerance tests.
- Measured serum levels of ucOC.
Main Results:
- UcOC showed a positive correlation with C-peptide response changes during glucagon loading (P=0.025).
- UcOC also correlated positively with C-peptide response after a meal (P=0.047).
Conclusions:
- UcOC levels appear to reflect the reserve capacity of beta-cell function in T2D patients.
- UcOC may serve as an indicator of bolus insulin secretion ability in type 2 diabetes.
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