Soil contamination by toxic trace metal elements, like barium (Ba), may stimulate various undesirable changes in the metabolic activity of plants. The plant responses are fast and with, direct or indirect, generation reactive oxygen species (ROS). To cope with stress imposed ROS production, plants developed a dual cellular system composed enzymatic non-enzymatic players that convert ROS, their ...

Deltamethrin is -cyano pyrethroid insecticide used extensively in pest control. Although initially thought to be least toxic, a number of recent reports showed its toxicity in mammalian and non-mammalian laboratory and wildlife animal species. Lycopene is the pigment that gives tomatoes their red color and is one of four main carotenoids normally found in human blood and tissue. The present stu...

SIGNIFICANCE Antioxidant enzymes are thought to provide critical protection to cells against reactive oxygen species (ROS). However, many organisms can fully compensate for the loss of such enzymatic defenses by accumulating metabolites and Mn²⁺, which can form catalytic Mn-antioxidants. Accumulated metabolites can direct reactivity of Mn²⁺ with superoxide and specifically shield proteins from ...

Glucose-6-phosphate dehydrogenase (G6PDH) gates flux through the pentose phosphate pathway and is key to cellular antioxidant defense due to its role in producing NADPH. Good antioxidant defenses are crucial for anoxia-tolerant organisms that experience wide variations in oxygen availability. The marine mollusc, Littorina littorea, is an intertidal snail that experiences daily bouts of anoxia/h...

ISSN:0975-1459 Oxidative stress plays an important role in the pathogenesis of some diseases such as lung cancer, chronic obstructive pulmonary disease, and atheroscleorosis. Smoking may enhance oxidative stress not only through the production of reactive oxygen radicals in smoke but also through weakening of the antioxidant defense systems. Cigarette smoke may promote atherogenesis by producin...

BACKGROUND Lymphatic metastasis is regulated in multiple steps including the transit of tumor cells via the lymphatic vessels and the successful seeding in draining lymph nodes. Thus, several molecular signals and cellular changes must be involved in this complex process to facilitate tumor cell entry, colonization, and survival in the lymph node. To our knowledge, the present work explores, fo...

Salinity is a major abiotic stress that poses great obstacles to wheat production, especially in arid regions. The application of exogenous substances can enhance plant salt tolerance and increase its productivity under salinity stress. This work aimed assess the mechanisms selenium (Se) at different concentrations (2, 4 8 ?M SeCl2) mitigate hazardous impacts toxicity physiological, biochemical...