Abstract
Aims
Atherosclerotic cardiovascular disease remains the leading cause of death among patients with diabetes. Early identification of subclinical atherosclerosis is essential for the management of diabetic patients. This study aimed to characterize serum metabolic signatures associated with carotid intima-media thickness (C-IMT), a proxy of subclinical atherosclerosis, in patients with type 2 diabetes mellitus (T2DM).
Methods
After 1:1 matching by sex, age, body mass index, glycated haemoglobin A1c, and other clinical parameters, a total of 462 T2DM patients were enrolled, consisting of 231 patients with C-IMT of ≥ 1 mm (abnormal C-IMT) and 231 patients with C-IMT of < 1 mm (normal C-IMT). C-IMT was assessed using ultrasonography. The serum metabolic profiling of fasting blood samples was performed using liquid chromatography-tandem triple quadrupole mass spectrometer coupled with the multivariate and univariate statistical analysis.
Results
Patients with abnormal C-IMT had significantly higher deoxycholic acid (DCA) and taurodeoxycholic acid (TDCA) levels, and lower levels of taurocholic acid (TCA) than those with normal C-IMT. Conditional logistic regression analysis revealed that per 1-standard deviation increase of DCA, TDCA and TCA were significantly associated with 64.7% (95% CI: 1.234–2.196) and 38.5% (95% CI: 1.124–1.706) higher, and 26.8% (95% CI: 0.597–0.897) lower risk of abnormal C-IMT, after adjustment of confounders. The addition of DCA, TCA, or DCA × TDCA/TCA ratio significantly improved the discrimination of abnormal C-IMT over traditional risk factors.
Conclusions
Serum bile acids may be potential biomarkers for subclinical atherosclerosis in T2DM patients, which needs further confirmation.
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Availability of data and materials
The datasets used and/or analysed during the current study are not publicly available due to the individual privacy of the patients included in this study, but are available from the corresponding author on reasonable request.
Code availability
Not applicable.
Abbreviations
- ASCVD:
-
Atherosclerotic cardiovascular disease
- AUC:
-
Areas under the curves
- BMI:
-
Body mass index
- CAD:
-
Coronary artery disease
- C-IMT:
-
Carotid intima-media thickness
- DBP:
-
Diastolic blood pressure
- DCA:
-
Deoxycholic acid
- EDC·HCl:
-
N-Ethyl-N’-(3-dimethylaminopropyl) carbodiimide hydrochloride
- FC:
-
Fold change
- FXR:
-
Farnesoid X receptor
- HbA1c :
-
Glycated haemoglobin A1c
- HDL-c:
-
High-density lipoprotein cholesterol
- IMT:
-
Intima-media thickness
- LC-TQMS:
-
Liquid chromatography-tandem triple quadrupole mass spectrometer
- LDL-c:
-
Low-density lipoprotein cholesterol
- OPLS-DA:
-
Orthogonal partial least squares-discriminant analysis
- ROC:
-
Receiver operating characteristic
- SBP:
-
Systolic blood pressure
- SD:
-
Standard deviation
- T2DM:
-
Type 2 diabetes mellitus
- TC:
-
Total cholesterol
- TCA:
-
Taurocholic acid
- TDCA:
-
Taurodeoxycholic acid
- TG:
-
Triglyceride
- TGR5:
-
Takeda G protein-coupled receptor 5
- VIP:
-
Variable importance in the projection
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Acknowledgements
We are very grateful to all the staff for helping with the present study. We are grateful to all participants for their dedication to data collection and laboratory measurements.
Funding
This work was funded by Natural Science Foundation of Shanghai (17ZR1421300).
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XM and JL contributed to study design. JS contributed to data collection, data analysis, and writing the paper. QZ and AZ performed the data analysis and the LC-TQMS-based metabolomics. WZ contributed to the sample collection. AZ, WJ, JL, and XM revised the paper and contributed to the discussion. All authors read and approved the final manuscript.
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Su, J., Zhao, Q., Zhao, A. et al. Serum metabolic signatures of subclinical atherosclerosis in patients with type 2 diabetes mellitus: a preliminary study. Acta Diabetol 58, 1217–1224 (2021). https://doi.org/10.1007/s00592-021-01717-7
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DOI: https://doi.org/10.1007/s00592-021-01717-7