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Σάββατο 14 Ιουλίου 2018

Cecal Ligation and Puncture Alters Glucocorticoid Receptor Expression

imageObjectives: Interventional trials on glucocorticoids in sepsis have yielded capricious results. Recent studies have identified multiple glucocorticoid receptor isoforms. The relative abundance of these isoforms in septic patients and following murine cecal ligation and puncture is unknown. The objective of this study is to determine the effects of cecal ligation and puncture on glucocorticoid receptor isoform abundance. Design: Determination of effects of cecal ligation and puncture on glucocorticoid receptor isoform subtype abundance in C57BL/6 mice. Examination of glucocorticoid receptor isoform abundance in tissues harvested from patients immediately after death from sepsis or nonseptic critical illness. Setting: Research laboratory. Subjects: C57BL/6 mice and human tissue sections from recently deceased critically ill patients. Interventions: C57BL/6 mice were subjected to cecal ligation and puncture or sham operation. Abundance of the activating glucocorticoid receptor α and the inactivating glucocorticoid receptor β isoforms was determined in mouse and human tissue using immunoblotting. Cardiac output with or without stimulation with dexamethasone was assessed using echocardiography. The expression of the gene encoding the glucocorticoid-dependent enzyme glucose-6-phosphatase was identified using polymerase chain reaction. Statistical significance (p

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