title: The protective role of quince leaf extract against the adverse impacts of ultraviolet--a radiation on some tissues of Clarias gariepinus (Burchell, 1822).
abstract: 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 3days/for 3h/day), UVR-treated group (for 3days/for 3h/day) with adding 10ml of quince extract, and UVR-treated group (for 3days/for 3h/day) with adding 20ml 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.
authors.affiliation: Department of Zoology, Faculty of Science, Assiut University, Assiut, Egypt. alaa_h254@yahoo.com
authors.forename: A H
authors.initials: AH
authors.lastname: Sayed
authors.forename: Hanem S
authors.initials: HS
authors.lastname: Abdel-Tawab
authors.forename: Sara S
authors.initials: SS
authors.lastname: Abdel Hakeem
authors.forename: Imam A
authors.initials: IA
authors.lastname: Mekkawy
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000494:pharmacology; D002397:Catfishes; D004912:Erythrocytes / Q000187:drug effects / Q000473:pathology / Q000528:radiation effects; D008099:Liver / Q000187:drug effects / Q000473:pathology / Q000528:radiation effects; D010936:Plant Extracts / Q000494:pharmacology*; D018515:Plant Leaves / Q000737:chemistry; D011837:Radiation-Protective Agents / Q000494:pharmacology*; D027824:Rosaceae / Q000737:chemistry*; D012867:Skin / Q000187:drug effects / Q000528:radiation effects; D014466:Ultraviolet Rays / Q000009:adverse effects*
chemical_list: D000975:Antioxidants; D010936:Plant Extracts; D011837:Radiation-Protective Agents