The protective role of quince leaf extract against the adverse impacts of ultraviolet-A radiation on some tissues of Clarias gariepinus (Burchell, 1822)

In the present study the protective role of quince leaf extract against the adverse impacts of ultraviolet radiation-A (UVA) on some tissues of Clarias gariepinus (Burchell, 1822) was considered. Fishes were classified into four groups: control, UVR-treated group (for 3 days/for 3 h/day), UVR-treated group (for 3 days/for 3 h/day) with adding 10 ml of quince extract, and UVR-treated group (for 3 days/for 3 h/day) with adding 20 ml of quince leaf extract. Blood smears and sections of the liver, and skin were processed routinely for H & E paraffin embedding technique. Some UVA-induced malformations were recorded in the red blood cells including crenated cells (Cr), Acanthocytes (Ac), tear drop-like cells (Tr) and sickle cells (Sk). Also, UVA-induced disorganization of the normal architecture of hepatic tissues with lipidosis was evident. Hypertrophy and vacuolated club cells were recorded in skin exposed to UVA. In conclusion, quince leaf extract has a valuable antioxidant protective role to prevent and/or repair the histopathological changes induced by UVA.

► We tested one dose of UVA and the effects of use quince leaf extract as antioxidant on Clarias gariepinus. ► We investigate the effects of UVA on Red blood cells, skin and liver of Clarias gariepinus. ► Our results showed RBC’s malformations with moderate and severe damage to skin, and liver. ► Quince leaf extract has been indicated its role as antioxidant against UVA exposure.