Abstract:Objective To investigate the serum Pannexin1 level and its clinical significance in patients with ischemic stroke (IS). Methods A total of 124 cases of IS patients were selected as the IS group and 124 cases of healthy physical examination were selected as the control group in our hospital from January 2017 to December 2018. IS patients were divided into small infarction group, middle infarction group and large infarction group accorded to cerebral infarction volume; and they were divided into good prognosis group and poor prognosis group accorded to Rankin scale scores after 90 days of onset. Enzyme-linked immunosorbent assay (ELISA) was used to determine the level of serum Pannexin1. Results The levels of serum Pannexin1 at different time points in the IS group were higher than those in the control group (P < 0.05). Comparison of serum Pannexin1 levels in patients with IS with different cerebral infarction volumes, analysis of variance showed statistically significant differences (P < 0.05); the level of serum Pannexin1 in the large infarction group was higher than those in the small infarction group and the middle infarction group (P < 0.05); the level of serum Pannexin1 in the middle infarction group was higher than that in the small infarction group (P < 0.05). The serum level of Pannexin1 in IS patients was positively correlated with cerebral infarction volume (r = 0.512) and NIHSS score (r = 0.547) (P < 0.05). The serum Pannexin1 level in the good prognosis group was lower than that in the poor prognosis group (P < 0.05). The area under the ROC curve of serum Pannexin1 level predicting poor prognosis of IS was 0.869 (95% CI: 0.866, 0.872), sensitivity was 88.37% (95% CI: 0.843, 0.923), and specificity was 80.25% (95% CI: 0.763, 0.843). Conclusion Serum Pannessin1 level is elevated in patients with IS. Serum Pannessin1 level is closely related to the severity of disease, the degree of nerve damage and the prognosis of IS patients.