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The role of estrogen and receptor agonists in maintaining organ function after trauma-hemorrhage Yu HP; Chaudry IHShock 2009[Mar]; 31 (3): 227-37Sex is increasingly recognized as a major factor in the outcome of patients who have trauma and sepsis. Moreover, sex steroids influence chemokine/adhesion molecule expression and neutrophil accumulation. Heat shock proteins, heat shock factor 1, and peroxisome proliferator-activated receptor [gamma] coactivator 1 are regulated by the estrogen receptors and consequently contribute to organ protection after trauma-hemorrhage. Additionally, sex steroids regulate inflammatory cytokines, leading to increased morbidity and mortality. This article deals with trauma-hemorrhage and examines the following: 1) the evidence for sex differences; 2) the mechanisms by which sex hormones affect organ protection; 3) the tissue-specific effect of sex hormone receptors; and 4) the effect of genomic and nongenomic (i.e. membrane-initiated steroid signaling) pathways of sex hormones after trauma. The available information indicates that sex steroids modulate cardiovascular responses after trauma. Thus, alteration or modulation of the prevailing hormone milieu at the time of injury seems to be a novel therapeutic option for improving outcome after injury|*Sex Characteristics[MESH]|Estrogens/*metabolism[MESH]|Female[MESH]|Gonadal Steroid Hormones/*metabolism[MESH]|Hemorrhage/*metabolism/mortality/therapy[MESH]|Humans[MESH]|Male[MESH]|Organ Specificity[MESH]|Receptors, Estrogen/*metabolism[MESH]|Sepsis/metabolism/mortality/therapy[MESH]|Wounds and Injuries/*metabolism/mortality/therapy[MESH] |
