Some consequences of ozone exposure on health.
The reaction of ozone with polyunsaturated fatty acids from the surfactant factor and pulmonary epithelial cells produces different reaction products which can cross the alveolar-capillary barrier and reach distant structures. Although only a few papers claim extrapulmonary changes in animals exposed to this gas, some neurological deficits, such as complaints of fatigue, lethargy, headache in humans, as well as significant disarrangements in the sleep pattern related to biochemical changes in the brain have been referred to in animals exposed to ozone. In the present review, the molecular configuration and the reaction of ozone at different lung levels are related to impairment at the respiratory and blood systems, in order to elucidate the mechanisms by which this gas or its reaction products, such as free radicals, prostaglandins and others can cross the alveolar-capillary and hemato-encephalic barriers, and to explain those neurological effects.
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Departamento de Neurofisiología, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suáres, México, D.F.
D000328:Adult; D000393:Air Pollutants / Q000494:pharmacology / Q000633:toxicity*; D000818:Animals; D001769:Blood / Q000187:drug effects; D016084:Bronchoconstriction / Q000187:drug effects; D002490:Central Nervous System / Q000187:drug effects; D002648:Child; D004285:Dogs; D005231:Fatty Acids, Unsaturated / Q000737:chemistry; D006261:Headache / Q000139:chemically induced; D006801:Humans; D051379:Mice; D018384:Oxidative Stress; D010126:Ozone / Q000494:pharmacology / Q000633:toxicity*; D010777:Photochemistry; D011817:Rabbits; D012120:Respiration Disorders / Q000139:chemically induced* / Q000453:epidemiology / Q000517:prevention & control; D012756:Sheep; D012893:Sleep Wake Disorders / Q000139:chemically induced; D014504:Urban Health
D000393:Air Pollutants; D005231:Fatty Acids, Unsaturated; D010126:Ozone