Increased serum SGLT2 and its potential diagnostic and prognostic value in patients with acute ischemic stroke

•Serum sodium-glucose cotransporter-2: potential biomarker for acute ischemic stroke.•Sodium-glucose cotransporter-2 unrelated to stroke severity or functional prognosis.•Stroke patients have higher serum sodium-glucose cotransporter-2 levels.•Sodium-glucose cotransporter-2 linked to the onset time of acute ischemic stroke.•Sodium-glucose cotransporter-2 and post-stroke inflammation, oxidative stress. Recently acquired data suggests that sodium-glucose cotransporter-2 (SGLT2) may be a therapeutic target for cerebral ischemia. The specific impact of SGLT2 in acute ischemic stroke (AIS) remains unknown. We aimed to explore the levels of SGLT2 in AIS patients and its association with functional prognosis. In this study, 132 AIS patients and 44 healthy controls were recruited prospectively to determine serum SGLT2 levels. Logistic regression analysis was employed to assess the association between serum SGLT2 level and stroke risk as well as 3-month outcome. Receiver operating characteristic (ROC) curves were utilized to evaluate predictive values for blood biomarkers. Serum SGLT2 levels were significantly higher (P =.000) in AIS patients (47.1 (interquartile range [IQR]: 42.4–50.9) ng/mL) than healthy controls (35.7 (IQR: 28.6–39.5) ng/mL). The optimal SGLT2 cutoff point for diagnosing AIS was 39.55 ng/mL, with a sensitivity of 90.2 % and specificity of 77.3 %. Serum levels of SGLT2 were negatively correlated with the onset time of AIS (linear fit R2 = 0.056, P =.006), but were not associated with National Institutes of Health Stroke Scale (NIHSS) scores (r = 0.007, P >.05) and lesion volume (r = -0.151, P >.05). SGLT2 was not remarkably different between patients with unfavorable and favorable outcomes (46.7 (IQR: 41.9–49.6) ng/mL vs 47.6 (IQR: 42.5–51.9) ng/mL; P =.321). The serum SGLT2 concentration may be a potential biomarker for the diagnosis of AIS. However, it does not exhibit any association with disease severity or functional prognosis.