Antioxidative responses in females and males of the spider Xerolycosa nemoralis (Lycosidae) exposed to natural and anthropogenic stressors.

Abstract

The aim of this study was to assess the intensity of enzymatic antioxidative parameters [i.e., superoxide dismutase (SOD), catalase (CAT), and the glutathione peroxidases each selene dependent, GPOX or selene independent, including GSTPx, glutathione S-transferase, and GST] and non-enzymatic antioxidative parameters [i.e., glutathione total (GSH-t), the heat shock proteins of Hsp70, and metallothioneins (Mt)] in the midgut glands of female and male wolf spiders Xerolycosa nemoralis (Lycosidae) exposed to natural stressors (i.e., heat shock and starvation) and anthropogenic stressors (i.e., the organophosphorous pesticide dimethoate) under laboratory conditions. The spiders were collected from two differentially polluted sites both localized in southern Poland: Olkusz, which is heavily polluted with metals, and Pilica, the reference site. In response to the stressing factors, increases in Hsp70 levels, in the concentrations of total glutathione and in the activity levels of glutathione-dependent enzymes (GPOX, GSTPx, and GST) were found in the midgut glands of males. In the females, high levels of activity of CAT and SOD were revealed, as well as an increased percentage of Mt-positive cells. Preexposed females, in comparison to the individuals from the reference site, responded with increased SOD activity, irrespective of the stressing factor. In contrast, the changes in the antioxidative parameters in the midgut glands of male X. nemoralis seem to reflect a short-term reaction to the applied stressors and do not confirm the effects of long-term selection in a polluted environment.

• Authors: Grażyna Wilczek, Agnieszka Babczyńska, Piotr Wilczek
• Journal: Comparative biochemistry and physiology. Toxicology & pharmacology : CBP (Comp Biochem Physiol C Toxicol Pharmacol) Vol. 157 Issue 2 Pg. 119-31 (Mar 2013) ISSN: 1532-0456 [Print] United States
• PMID: 23099032 (Publication Type: Journal Article)
• Copyright: Copyright © 2012 Elsevier Inc. All rights reserved.

Chemical References

• Antioxidants
• HSP70 Heat-Shock Proteins
• Insecticides
• Metallothionein
• Catalase
• Glutathione Peroxidase
• Superoxide Dismutase
• Glutathione Transferase
• Glutathione
• Dimethoate

Topics

• Analysis of Variance
• Animals
• Antioxidants (metabolism)
• Catalase (metabolism)
• Digestive System (drug effects, metabolism)
• Dimethoate (toxicity)
• Female
• Glutathione (metabolism)
• Glutathione Peroxidase (metabolism)
• Glutathione Transferase (metabolism)
• HSP70 Heat-Shock Proteins (metabolism)
• Hot Temperature
• Insecticides (toxicity)
• Male
• Metallothionein (metabolism)
• Sex Factors
• Spiders (drug effects, metabolism)
• Starvation
• Stress, Physiological
• Superoxide Dismutase (metabolism)