Dietary vitamin-E modulates antioxidant defence system in giant freshwater prawn, Macrobrachium rosenbergii

被引:77
|
作者
Dandapat, J
Chainy, GBN [1 ]
Rao, KJ
机构
[1] Utkal Univ, Dept Zool, Biochem Unit, Bhubaneswar 751004, Orissa, India
[2] Utkal Univ, Dept Zool, ICABPS, Bhubaneswar 751004, Orissa, India
[3] Cent Inst Freshwater Aquaculture, Bhubaneswar 751002, Orissa, India
来源
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY | 2000年 / 127卷 / 01期
关键词
freshwater prawn; dietary vitamin-E; lipid peroxidation; superoxide dismutase; catalase; glutathione peroxidase; glutathione reductase; ascorbic acid; glutathione;
D O I
10.1016/S0742-8413(00)00132-8
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The objectives of the present study were to determine the effect of supplementary vitamin-E (200, 400 and 600 mg/kg feed) on lipid peroxidation (LPX) and antioxidant defence system in gills and hepatopancreas of the freshwater prawn, Macrabrachium rosenbergii. Results indicated that vitamin-E inhibited LPX in the hepatopancreas in a comparatively lower dose than gills. Superoxide dismutase (SOD) activity was decreased significantly in gills in response to all the three supplemented diet, but in hepatopancreas decrease was observed only in response to higher doses of vitamin-E (400 and 600 mg/kg feed). Catalase (CAT) activity was reduced significantly only in gills but not in hepatopancreas. While glutathione peroxidase (GPX) activity was significantly elevated in the hepatopancreas by vitamin-E, its activity remains unaltered in gills. On the contrary, glutathione reductase (GR) activity was decreased in gills but that of hepatopancreas was constant. Glutathione (GSH) content of both gills and hepatopancreas was substantially elevated in the vitamin-E supplemented prawns. Although the ascorbic acid (ASA) content of gills was unchanged by vitamin-E, its level elevated significantly in hepatopancreas. Thus the findings of the present investigation suggest that dietary vitamin-E is capable of reducing LPX level and can modulate antioxidant defence system in gills and hepatopancreas, nevertheless, the response is highly tissue specific. It is further observed that highest dose of vitamin-E (600 mg/kg feed) could not render much additional protection in both the tissues. (C) 2000 Elsevier Science Inc. Pill rights reserved.
引用
收藏
页码:101 / 115
页数:15
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