Systemic hypothermia induced within 10 hours after birth improved neurological outcome in newborns with hypoxic-ischemic encephalopathy.

Objective: To evaluate the efficacy of systemic hypothermia when applied within 10 hours after birth to neonates with hypoxic-ischemic encephalopathy (HIE).

Study Design: Ninety-three term infants with moderate-to-severe HIE were randomly assigned to either systemic hypothermia (n = 46) or conventional treatment (n = 47). Hypothermia was induced within 10 hours after birth, decreasing rectal temperature to 33.

Erythropoietin improved neurologic outcomes in newborns with hypoxic-ischemic encephalopathy.

Objective: The purpose of this study was to evaluate the efficacy and safety of erythropoietin in neonatal hypoxic-ischemic encephalopathy (HIE), by using a randomized, prospective study design.

Methods: A total of 167 term infants with moderate/severe HIE were assigned randomly to receive either erythropoietin (N = 83) or conventional treatment (N = 84). Recombinant human erythropoietin, at either 300 U/kg (N = 52) or 500 U/kg (N = 31), was administered every other day for 2 weeks, starting <48 hours after birth.

Mechanical ventilation with high tidal volume or frequency is associated with increased expression of nerve growth factor and its receptor in rabbit lungs.

Objective: Nerve growth factor (NGF), a neurotrophin, is induced in lung cells by proinflammatory cytokines, and has a role in bronchial hyperreactivity and lung tissue repair. Ventilation induced lung injury, on the other hand, is known to increase the levels of proinflammatory cytokines in the lungs. We investigated whether, and to what extent, various degrees of lung injury induced by short-term ventilation affect NGF levels in the lung tissue of adolescent rabbits.

Effects of duration and amount of lung stretch at biophysical, biochemical, histological, and transcriptional levels in an in vivo rabbit model of mild lung injury.

The purpose of this study was to characterize the effects of doubling minute ventilation (either by doubling ventilator frequency [Freq] or tidal volume [V T]) and of normal minute ventilation prolonged to 12-fold duration, synchronously at biophysical, biochemical/cellular, histological, and transcriptional levels in a model of mild lung injury. A prospective, randomized study was performed on adolescent New-Zealand white rabbits. The rabbits were randomly assigned to one of the following groups: control (normal minute ventilation for 0.

Intraischemic mild hypothermia prevents neuronal cell death and tissue loss after neonatal cerebral hypoxia-ischemia.

The effectiveness of hypothermia in preventing ischemic brain damage depends on when it is started. The purpose of this study was to investigate the effects of temperature reduction during a hypoxic-ischemic (HI) insult on brain injury and signalling pathways of neuronal cell death and survival. Seven-day-old mice were subjected to left common carotid artery ligation and hypoxia (10% oxygen) at different temperatures (37, 36 or 34 degrees C) for 50 min.

Post-ischemic hypothermia-induced tissue protection and diminished apoptosis after neonatal cerebral hypoxia-ischemia.

Hypothermia is possibly the single most effective method of neuroprotection developed to date. However, the mechanisms are not completely understood. The aim of this study was to investigate the effects of post-ischemic hypothermia on brain injury and apoptotic neuronal cell death as well as related biochemical changes after neonatal hypoxia-ischemia (HI).