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Seasonal variation of oxidative biomarkers in gills and digestive gland of green-lipped mussel Perna viridis from Arabian Sea

DRS at CSIR-National Institute of Oceanography

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Title Seasonal variation of oxidative biomarkers in gills and digestive gland of green-lipped mussel Perna viridis from Arabian Sea
 
Creator Verlecar, X.N.
Jena, K.B.
Chainy, G.B.N.
 
Subject oxidative biomarkers
biomarkers
antioxidants defence system
mussels
seasonal variation
Perna viridis
 
Description Investigations on seasonal variation in oxidative stress biomarkers were carried out on the natural population of green-lipped mussel Perna viridis collected from Bambolim beach area of Goa (India). Oxidative stress indices such as lipid peroxidation (LPX), hydrogen peroxide (H sub(2) O sub(2)), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPX), glutathione transferase (GST), glutathione reductase (GR), reduced glutathione (GSH) and ascorbic acid (ASA) were measured in gills and digestive gland of P. viridis during February, May, August and November. The present study reveals two important aspects regarding the antioxidant defence status of tissues of P. viridis. Firstly, antioxidant capacity of tissues of P. viridis exhibits seasonal variation. Secondly, various components of antioxidant capacity such as oxidative stress markers, levels of antioxidant enzymes and small antioxidant molecules vary differently in tissues with respect to different seasons. Although the oxidative stress status of gills and digestive gland of P. viridis expressed in terms of LPX and H sub(2) O sub(2) was the lowest in February, its level was maximal in gills and digestive gland during May and November, respectively. While activities of SOD and GPX of tissues of P. viridis were found to be low in August, activities of CAT and GR were recorded to be low in February. GST activity in gills although remained high in February, in digestive gland elevated values were recorded in August and November. A seasonal variation in the levels of small antioxidant molecules was also noticed. Among non-enzymatic antioxidants ASA content of tissues was maximal in May and August in comparison to February and November, but GSH remained high in November. It therefore appears that environmental factors may play a crucial role in regulating the oxidative stress capacity of tissues of P. viridis.
 
Date 2008-03-27T11:34:12Z
2008-03-27T11:34:12Z
2008
 
Type Journal Article
 
Identifier Estuarine, Coastal and Shelf Science, vol.76(4); 745-752p.
http://drs.nio.org/drs/handle/2264/1035
 
Language en
 
Rights An edited version of this paper was published by Elsevier. Copyright [2008] Elsevier
 
Publisher Elsevier