Background: Cardiovascular disease is a major complication of diabetes mellitus (DM). Type-2 DM (T2DM) is associated with an increased risk of cardiovascular events and mortality, while serum biomarkers may facilitate the prediction of these outcomes. Early differential diagnosis of T2DM complicated with acute coronary syndrome (ACS) plays an important role in controlling disease progression and improving safety.

Aim: To investigate the correlation of serum bilirubin and γ-glutamyltranspeptidase (γ-GGT) with major adverse cardiovascular events (MACEs) in T2DM patients with ACS.

Methods: The clinical data of inpatients from January 2022 to December 2022 were analyzed retrospectively. According to different conditions, they were divided into the T2DM complicated with ACS group (T2DM + ACS, = 96), simple T2DM group (T2DM, = 85), and simple ACS group (ACS, = 90). The clinical data and laboratory indices were compared among the three groups, and the correlations of serum total bilirubin (TBIL) levels and serum γ-GGT levels with other indices were discussed. T2DM + ACS patients received a 90-day follow-up after discharge and were divided into event ( = 15) and nonevent ( = 81) groups according to the occurrence of MACEs; Univariate and multivariate analyses were further used to screen the independent influencing factors of MACEs in patients.

Results: The T2DM + ACS group showed higher γ-GGT, total cholesterol, low-density lipoprotein cholesterol (LDL-C) and glycosylated hemoglobin (HbA1c) and lower TBIL and high-density lipoprotein cholesterol levels than the T2DM and ACS groups ( < 0.05). Based on univariate analysis, the event and nonevent groups were significantly different in age ( = 3.3612, = 0.0011), TBIL level ( = 3.0742, = 0.0028), γ-GGT level ( = 2.6887, = 0.0085), LDL-C level ( = 2.0816, = 0.0401), HbA1c level ( = 2.7862, = 0.0065) and left ventricular ejection fraction (LEVF) levels (t=3.2047, = 0.0018). Multivariate logistic regression analysis further identified that TBIL level and LEVF level were protective factor for MACEs, and age and γ-GGT level were risk factors ( < 0.05).

Conclusion: Serum TBIL levels are decreased and γ-GGT levels are increased in T2DM + ACS patients, and the two indices are significantly negatively correlated. TBIL and γ-GGT are independent influencing factors for MACEs in such patients.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10835495PMC
http://dx.doi.org/10.4239/wjd.v15.i1.34DOI Listing

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