| BMI | body mass index |
| DBP | diastolic blood pressure |
| HDL | high-density lipoprotein |
| HOMA-IR | homeostasis model assessment of insulin resistance |
| ODC | ornithine decarboxylase |
| SBP | systolic blood pressure |
| SSAT | spermine/spermidine acetyltransferase |
| T2D | type 2 diabetes |
| UHPLC-MS/MS | ultra-high performance liquid chromatography tandem mass spectrometry. |