The invention belongs to the technical field of biological medicines, and particularly relates to application of a blood fat reducing
medicine in preparation of a
medicine for treating
pemphigus. According to the application disclosed by the invention, the hypolipidemic
drug is found to be used for treating
pemphigus for the first time, and by analyzing the blood fat of a PV patient, the hypolipidemic
metabolism of the patient is found to be abnormal, and the
oxidative stress level is related to the classical biomarker level of PV. Lipid-induced
oxidative stress was confirmed by
in vitro experiments using
HaCaT cells treated with serum of PV patients, and it was found that it results in STAT3 activation and mitochondrial dependent
apoptosis. ATO intervention can effectively reverse the
pathological process: by correcting
lipid metabolism disorder, ATO significantly reduces the
oxidative stress level, inhibits STAT3
phosphorylation, and reduces the occurrence of mitochondrial dependent
apoptosis. The invention discloses an important relationship among
lipid disorder, oxidative stress,
apoptosis and STAT3 activation in PV, and prompts that statins may become a potential
treatment strategy for PV.