Introduction: ischemic preconditioning is one of the most important mechanisms, responsible for the increased brain resistance after stroke. One of the most important candidates to ischemia preconditioning is intermittent normobaric hyperoxia. In this study, the effect of intermittent normobaric hyperoxia on the expression of UCP2 was investigated in a stroke model. Methods: Rats were divid...

introduction: a large body of evidence points to oxidative stress as prime candidate mediating the behavioral impairments and memory deficits in alzheimer's disease (ad). it has been demonstrated that hyperoxia preconditioning activates complex endogenous neuroprotective mechanisms including an increase in capacity of antioxidant defence mechanisms. the aim of this study was to investigate...

Abstract Introduction: Resent studies have been shown beneficial effects of hyperoxia pretreatment against ischemia-reperfusion injury in different organs. The aim of the present study was to investigate early and late effects of normobaric hyperoxia (≥95% O2) pretreatment on ischemia-reperfusion injuries in isolated rat hearts. Methods: Following 60 and 180 minutes of hyperoxia, rat hearts w...

Introduction: A large body of evidence points to oxidative stress as prime candidate mediating the behavioral impairments and memory deficits in Alzheimer's disease (AD). It has been demonstrated that hyperoxia preconditioning activates complex endogenous neuroprotective mechanisms including an increase in capacity of antioxidant defence mechanisms. The aim of this study was to investigate the ...

In order to study the interaction of glutathione, vitamin C and vitamin E under hyperoxia (95 % oxygen) and hyperbaric oxygen (2.5 atmospheric pressure), 20 days old male Guinea pigs were fed with basal vitamin C free diet, while receiving a vitamin C supplement of either high concentration (50 mg/day) or low concentration (1 mg/day) for two weeks. Animals were than exposed to hyperoxia and hyp...

Objective: to identify the association of hyperoxia at time Intensive Care Unit (ICU) admission with clinical outcomes in adult patients on invasive mechanical ventilation and respiratory dysfunction defined by a PaO2/FIO2 ratio (P/F) below 300. Methods: retrospective cohort observational study data from admitted general ICU, 8 beds university hospital. Hyperoxia was as PaO2 > 120mmHg were c...

Bronchopulmonary dysplasia (BPD) is one of the main causes chronic lung disease in premature infants. Acute injury following exposure to hyperoxia contributes development BPD preterm The nuclear factor‑erythroid 2‑related factor 2 (Nrf2) signaling pathway an endogenous antioxidant defense mechanism that involved pathogenesis numerous hyperoxia‑induced diseases. In present study, expression Nrf2...

Abstract Background Hyperoxia downregulates the tight junction (TJ) proteins of alveolar epithelium and leads to barrier dysfunction. Previous study has showed that STE20/SPS1-related proline/alanine-rich kinase (SPAK) interferes with intestinal function in mice. The aim present is explore association between SPAK after hyperoxic exposure. Methods Hyperoxic acute lung injury (HALI) was induced ...

abstract introduction: resent studies have been shown beneficial effects of hyperoxia pretreatment against ischemia-reperfusion injury in different organs. the aim of the present study was to investigate early and late effects of normobaric hyperoxia (≥95% o2) pretreatment on ischemia-reperfusion injuries in isolated rat hearts. methods: following 60 and 180 minutes of hyperoxia, rat hearts wer...