[Resolution of inflammation--pharmacological aspects]. / Rezolutia inflamatiei--implicatii farmacologice.

Inflammation is a fundamental biologic process evolutionally preserved by a germ line code. The interplay of the epigenetic with the environment directs the code to temporally distinct inflammatory responses, which can be acute or chronic. The aim of this study is to present new aspects regarding the resolution of inflammation. Acute inflammation normally resolves by mechanisms still somewhat elusive. Current evidence suggests that an active coordinated program initiated the first few hours after the inflammatory response begins and its failure lead to chronic inflammation. This process is essential for appropriate host responses, tissue protection and the return to homeostasis. Prostaglandins and leukotrienes are lipid mediators that play important roles in host defense and acute inflammation. Granulocytes promote the switch of arachidonic acid-derived prostaglandins and leukotrienes to lipoxins, active antiinflammatory and pro-resolution mediators. The apoptosis of the neutrophils coincides with the biosynthesis of resolvins and protectins from omega-3 polyunsaturated fatty acids and releases anti-inflammatory and reparative cytokines. This information could lead to new treatments for inflammatory diseases.

Folic acid and selenite during reproduction, gestation and lactation protect against ethanol changed Se bioavailability.

AIMS: Levels of antioxidants such as folic acid and selenium decrease in dams exposed to ethanol during gestation and lactation, affecting their antioxidant status, their reproductive function and consequently the health of their progeny. We will study whether a Se (0.5 p.p.m.) plus folic acid (8 p.p.m.) supplemented diet administered to ethanol-exposed dams and male rats prevents the effects provoked by ethanol in Se bioavailability and in their glutathione peroxidase (GPx) activity, thus improving the health of their offspring. METHODS: Se levels in tissue were measured by graphite-furnace atomic absorption spectrometry and serum GPx activity by spectrophotometry. RESULTS: Results show that ethanol decreases Se retention in dams, affecting their tissues' Se deposits, decreasing serum GPx activity, gestational parameters and the weight of their progeny. CONCLUSIONS: Se plus folic acid balance Se bioavailability, something that is especially important during gestation and lactation, and as a direct result, the health of their progeny is improved.