Giant freshwater prawn, Macrobrachium rosenbergii (deMan) (Crustacea-Decapoda) is an economically important species widely cultured in both freshwater and low saline water (brackish water) aquaculture. The experiments were conducted to study the effects of dietary supplementation of vitamin-E on the post-larval production (seed production), lipid peroxidation (LPX) and antioxidant defence syste...

we aimed to study the mntnhex-2-pyp effect on some markers of lung antioxidant defence system in mice asthma model.the study was carried out on 28 c57b1/6 mice divided into four treatment groups: group 1 - controls; group 2 - injected and inhaled with ovalbumin; group 3 - treated with mntnhex-2-pyp and inhaled with phosphate buffered saline; group 4 - injected with ovalbumin and mntnhex-2-pyp b...

The aim of the present study was to determine antioxidant defence mechanisms in the rat and Hymenolepis diminuta after long-term infestation. We determined levels of oxidative stress markers, and activity of antioxidant enzymes in the rat small intestine and in particular parts of H. diminuta. Observed changes in antioxidant enzymes activity in H. diminuta and the rat intestine indicate the def...

Plants have evolved mechanisms to avoid and repair UV radiation damage; it is not surprising that photomorphogenic responses to UV-B and UV-C are often assumed to be adaptations to harmful radiation. Free radicals generated by UV are likely to be involved in the induction of antioxidant defence system. In this study plants were grown for 5 weeks in controlled conditions. Plants were grown in ve...

Altered thyroid function during early stages of development is known to affect adversely testicular growth, physiology, and antioxidant defence status at adulthood. The objective of the present study is to investigate the modulation of antioxidant defence status in neonatal persistent hypothyroid rats before their sexual maturation and also to identify the specific testicular cell populations v...

Possibly the best-characterized cubic membrane transition has been observed in the mitochondrial inner membranes of free-living giant amoeba (Chaos carolinense). In this ancient organism, the cells are able to survive in extreme environments such as lack of food, thermal and osmolarity fluctuations and high levels of reactive oxygen species. Their mitochondrial inner membranes undergo rapid cha...

BACKGROUND Some breeds of sheep are highly seasonal in terms of reproductive capability, and these changes are regulated by photoperiod and melatonin secretion. These changes affect the reproductive performance of rams, impairing semen quality and modifying hormonal profiles. Also, the antioxidant defence systems seem to be modulated by melatonin secretion, and shows seasonal variations. The ai...

The antioxidant system in plants is a very important defensive mechanism to overcome stress conditions. We examined the expression profile of antioxidant enzymes superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) using a bioinformatics approach. We explored secondary structure prediction and made detailed studies of signature pattern of antioxidant proteins in four plant ...