Enhanced RBC Aggregation in Type 2 Diabetes Patients

Area of Science:

• Endocrinology
• Hematology
• Clinical Chemistry

Background:

• Type 2 diabetes mellitus (T2DM) is a complex metabolic disorder.
• Erythrocyte sedimentation rate (ESR) is an indicator of inflammation.
• Red blood cell (RBC) aggregation is implicated in diabetic complications.

Purpose of the Study:

• To investigate the relationship between HbA1c and RBC aggregation in T2DM patients.
• To analyze routine clinical test data and in vitro experimental results.
• To determine the primary drivers of elevated ESR in T2DM.

Main Methods:

• Analysis of data from 2,111 T2DM inpatients, divided into two groups based on plasma protein influence on ESR.
• Measurement of ESR, HbA1c, white blood cell count (WBC), C-reactive protein (CRP), fasting blood glucose (Fbg), and hematocrit (HCT).
• In vitro ESR studies on 60 T2DM patient samples with varying HbA1c levels; statistical analysis using Spearman's correlation and Mann-Whitney U test.

Main Results:

• Group A (limited plasma protein influence) showed lower ESR, age, HCT, HbA1c, CRP, WBC, and Fbg compared to Group B.
• Statistically significant differences (P < 0.05) were observed for HbA1c, CRP, and Fbg.
• HbA1c showed a stronger correlation with ESR in Group A (R=0.622) than Group B (R=0.563).
• In vitro studies indicated higher ESR values with increasing HbA1c levels (6.5-8.0%: 28±5.1 mm/h; 8.1-10%: 33±2.7 mm/h; >10%: 40±4.1 mm/h).

Conclusions:

• Elevated ESR in T2DM patients is predominantly caused by Fbg levels.
• HbA1c is a contributing factor to RBC aggregation in T2DM.
• Understanding these relationships can aid in managing diabetic complications.