TGFB1 and Hypertension: Patients with IL-8 serum concentrations ≥ 40.26 pg/mL had higher systolic and diastolic blood pressure before dialysis; more history of hypertension, diabetes, coronary artery disease, and heart failure; and higher serum concentrations of IL-6, IAA, TGFβ, and lower PTH (Table 1).