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[Tumor necrosis factor-alpha and interleukin-1 beta in maternal, fetal and retroplacental intravascular compartments at term and preterm labor].

Neonato preterm birth (before 37 pregnancy weeks) account more than 80% perinatal deaths not attributable to congenital malformations. Preterm and term labor full mechanisms are unknown at present. Proinflammatory cytokinesis direct participation have been involved in the phenomena by several experimental evidence. The study's aim was to determine TNF-alpha and IL-1 beta concentration at maternal, fetal and fetal-maternal vascular compartments in women with term and preterm delivery and in women at term childbirth without labor. TNF-alpha and IL-1 beta concentration were determinated by commercial immunoassay. TNF-alpha concentration showed a tendency to be in more proportion at fetal and fetal-maternal compartments in preterm and term childbirth groups versus TNF-alpha concentration in term group without labor at same places. IL-1 beta concentration showed same tendency of increase than TNF-alpha in preterm and term childbirth groups, but alone at fetal-maternal compartment. Statistical difference were not documented at any compartment or group compared. Data allow to identify fetal-maternal compartments as target places where TNF-alpha and IL-1 beta were synthesized. Gradient concentration synthesis of cytokinesis allows to intend fetus as TNF-alpha initial producer.