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This study examines the relationships between inflammation, surfactant protein (SP) expression, surfactant function, and lung physiology in a murine model of acute lung injury (ALI). 129/J mice received aerosolized endotoxin lipopolysaccharide [LPS] daily for up to 96 h to simulate the cytokine release and acute inflammation of ALI. Lung elastance (E(L))(More)
Allergen exposure induces the airway epithelium to produce chemoattractants, proallergic interleukins, matrix-modifying proteins, and proteins that influence the growth and activation state of airway structural cells. These proteins, in turn, contribute to the influx of inflammatory cells and changes in structure that characterize the asthmatic airway. To(More)
Magnesium ion (Mg2+) is a bronchodilator, but little is known about its mechanism of action on airways. We hypothesized that Mg2+ inhibits voltage-dependent Ca2+ channels of airway smooth muscle. Smooth muscle cells were freshly dispersed from pig trachea with collagenase. Depolarization-induced inward Ca2+ currents, measured in whole cell patch-clamp(More)
Acute respiratory distress syndrome (ARDS) is a life-threatening ailment characterized by severe lung injury involving inflammatory cell recruitment to the lung, cytokine production, surfactant dysfunction, and up-regulation of nitric oxide synthase 2 (NOS2) resulting in nitric oxide (NO) production. We hypothesized that NO production from NOS2 expressed in(More)
Microarray analysis of gene expression at the level of RNA has generated new insights into the relationship between cellular responses to acute heat shock in vitro, exercise, and exertional heat illness. Here we discuss the systemic physiology of exertional hyperthermia and exertional heat illness, and compare the results of several recent microarray(More)
294 Military operations in hot environments present a special set of challenges to the medical personnel who must support them. Hot environments can affect both personnel and equipment performance and introduce special considerations into the planning and execution of a military operation. Vast resources have been committed to warfare in the 20th century,(More)
We report the case of a 19-year-old Infantryman who developed posterior interosseous nerve palsy and a transient sensory deficit in a radial distribution after prolonged carrying of an M60 machine gun. Posterior interosseous nerve palsy has been reported in association with a variety of activities involving forceful, repetitive pronation and supination;(More)
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