EDN1 and asthma: Hydroethanol extract of saffron in drink water (0.1, 0.2 and 0.4 mg/mL) on OVA-sensitised induced asthma in guinea pigs significantly reduced serum levels of endotheline-1 (ET-1) and total protein (TP) compared to untreated OVA-sensitised guinea pigs (Gholamnezhad et al.