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It has been well documented that mammalian newborns are more resistant to hypoxia than adults. The mechanisms for this tolerance has attracted considerable attention due to its clinical implications. Recently, there has been great interest in comparing the mechanisms involved in such tolerance with
The effect of hypobaric hypoxia on the activities of glutamine synthetase, glutaminase and cyclic 3'5' AMP phosphodiesterase in rat brain was studied after exposure to 25,000' for 6 h. Glutamine synthetase activity was increased in all the regions of brain studied, and addition of gamma amino
Transplantation of pancreatic islets is the most reliable treatment for Type 1 diabetes. However cell death mediated by hypoxia is considered as one of the main difficulties hindering success in islet transplantation. The aim of our experiment was to investigate the role of small molecules in
Naked mole rats are among the most hypoxia-tolerant mammals identified and live in chronic hypoxia throughout their lives. The physiological mechanisms underlying this tolerance, however, are poorly understood. Most vertebrates hyperventilate in acute hypoxia and exhibit an enhanced hyperventilation
Hypoxia impairs brain function by incompletely defined mechanisms. Mild hypoxia, which impairs memory and judgment, decreases acetylcholine (ACh) synthesis, but not the levels of ATP or the adenylate energy charge. However, the effects of mild hypoxia on the synthesis of the glucose-derived amino
BACKGROUND
Neonatal hypoxia-ischemia (HI) is a common complication of pregnancy and delivery. Conventional clinical practice is to resuscitate neonates with 100% O2, and evidence is building to suggest resuscitation with lower O2 concentrations is safer. Significant neurochemical changes are
Preterm birth impacts brain development and leads to chronic deficits including cognitive delay, behavioral problems, and epilepsy. Premature loss of the subplate, a transient subcortical layer that guides development of the cerebral cortex and axonal refinement, has been implicated in these
Infants who suffer perinatal brain injury, including those with encephalopathy of prematurity, are prone to chronic neurological deficits, including epilepsy, cognitive impairment, and behavioral problems, such as anxiety, inattention, and poor social interaction. These deficits, especially in
Subgroup-VII-ethylene-response-factor (ERF-VII) transcription factors are involved in the regulation of hypoxic gene expression and regulated by proteasome-mediated proteolysis via the oxygen-dependent branch of the N-end-rule pathway. While research into ERF-VII mainly focused on their role to
The western painted turtle (Chrysemys picta bellii) has the unique ability of surviving several months in the absence of oxygen, which is termed anoxia. One major protective strategy that the turtle employs during anoxia is a reduction in neuronal electrical activity, which may result from a
Excessive extracellular fluid concentrations of the amino acids glutamate and aspartate play an important role in the pathogenesis of neuronal cell damage during hypoxia, hypoglycemia, and seizure. The purpose of these investigations was to test the hypothesis that bacterial meningitis causes
Liver hypoxia still represents an important cause of liver injury during shock and liver transplantation. We have investigated the protective effects of beta-alanine against hypoxic injury using isolated perfused rat livers and isolated rat hepatocyte suspensions. Perfusion with hypoxic
BACKGROUND
Mild hypothermia is neuroprotective after cerebral ischemia but surgery involving profound hypothermia (PH, temperature less than 18°C) is associated with neurologic complications. Rewarming (RW) from PH injures hippocampal neurons by glutamate excitotoxicity, N-methyl-D-aspartate
Oxygen availability in water is considered one of the most important factors for growth and productivity in aquatic submerged macrophytes. In the present study, the growth, stress responses, and metabolic changes in Potamogeton anguillanus Koidz. (Potamogetonaceae) were assessed after a 21-day