background: recent studies have shown that oxidative stress (os) is the most important indicator in the pathogenesis of alzheimer's disease (ad), but the results in previous studies are conflicting. this study aimed to assess the plasma levels of 8-hydroxy-2'-deoxyguanosine (8-ohdg) as dna oxidative damage marker and total antioxidant capacity (tac) in patients with ad versus control ...

Mitochondrial hyperfusion has recently been shown to function as a cellular stress response, providing transient protection against apoptosis and mitophagy. However, the mechanisms that mediate this response remain poorly understood. In this study, we demonstrate that oxidized glutathione (GSSG), the core cellular stress indicator, strongly induces mitochondrial fusion. Biochemical and function...

Volcanic activity is often accompanied by many small earthquakes. Earthquake focal mechanisms represent the fault orientation and slip direction, which are influenced by the stress field. Focal mechanisms of volcano-tectonic earthquakes provide information on the state of volcanoes via stresses. Here we demonstrate that quantitative evaluation of temporal stress changes beneath Mt. Ontake, Japa...

The long-term goal of this study is to develop a biomarker of decompression stress in cetaceans to better understand the link between anthropogenic interactions and barometric stress. We aim to analyze blood samples from captive, wild-caught, and stranded marine mammals in order to compare concentrations of Microparticles (MPs). If confirmed as an indicator of decompression stress, the use of M...

The long-term goal of this study is to develop a biomarker of decompression stress in cetaceans to better understand the link between anthropogenic interactions and barometric stress. We aim to analyze blood samples from captive, wild-caught, and stranded marine mammals in order to compare concentrations of Microparticles (MPs). If confirmed as an indicator of decompression stress, the use of M...

As the climate changes, some species within existing plant communities will become maladapted to local conditions. Immigration of climatically-suited species is unlikely to keep pace. This study investigated methods of using 1) community similarity between current and projected future plant communities as an indicator of ecosystem stress due to climate change, and 2) geographic distance to clim...

In the present study we have examined the influence of single spraying with simulated acid rain (pH 1.8) on the content of main lipid classes and their fatty acid composition in the thylakoid membranes of bean plants. Acid stress caused considerable changes in the investigated parameters. A decline in the content of linolenic acid, a highly unsatureted fatty acid which is an indicator of lipid ...

Anthropogenic alterations of woodland habitat may influence stopover biology, which in turn could alter the stress physiology of migratory landbirds. Woodland stopover habitats are scarce in the Northern Prairie region of North America and consist of native riparian corridor woodlands (corridors) and smaller, more isolated woodlots of anthropogenic origin around farmsteads (woodlots). Corridor ...