BDNF and coronary artery disorder: In conclusion, the serum levels of SAH, IL-1β, Hcy, TNF-α and BDNF were increased in patients with CHD, and the levels of SAH, IL-1β, Hcy, TNF-α and BDNF were positively correlated with the number of stenosis vessels, which could be used as biochemical indicators for monitoring the condition of CHD.