Clinica chimica acta; international journal of clinical chemistry
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Comparative Study Clinical Trial
Saliva collection method affects predictability of serum cortisol.
Measurement of cortisol is of particular importance for early diagnosis of adrenocorticotropic dysfunction and therapeutic monitoring. Saliva samples clearly present an easily manageable, non-invasive and anytime practicable assessment method of glucocorticoid production. The aims of the present study were to compare salivary cortisol collection method "Salivette" versus "passive drool", salivary cortisol concentrations with calculated free serum cortisol (FSC) and total serum cortisol (TSC) and the prediction of serum cortisol by salivary cortisol. ⋯ Our data indicate that salivary cortisol measurement with Salivettes is a reliable prediction method of total and calculated free serum cortisol levels. Moreover, it is a convenient method for saliva collection, handling and laboratory processing.
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In ST-elevation myocardial infarction (STEMI) B-type natriuretic peptide (BNP) holds promise for risk stratification. Aim of this study was to assess prognostic value of plasma BNP measurement and to compare with other powerful prognostic markers -- TIMI Risk Score (TRS) and C-reactive protein (CRP) in patients with first STEMI treated with primary PCI (pPCI). ⋯ Admission plasma BNP concentrations provide incremental prognostic information in patients with first STEMI treated with pPCI.
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Markers of inflammation may predict both coronary artery disease (CAD) and adverse outcomes in patients with known CAD. Here, we investigated the role of interleukin-6 (IL-6) in the "triage" and risk assessment of patients admitted to emergency department (ED). ⋯ IL-6 may behave as an adjunctive diagnostic tool to assist in the risk assessment of enzyme-negative patients with precordial chest pain of recent onset.
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This study was designed to test the usefulness of a bedside assay as compared to a laboratory method of troponin testing to predict adverse cardiac outcome of chest pain patients. ⋯ Patients with a discordant reading were at high risk of adverse cardiac outcome, which was only identified by the laboratory cTnI assay. Markedly, the use of the rapid assay saved time at the expense of clinical sensitivity.
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Comparative Study
Comparison of whole blood interleukin-8 and plasma interleukin-8 as a predictor for sepsis in postoperative patients.
Interleukin-8 (IL-8, also known as neutrophil-activating peptide 1, NAP1 and CXCL8, CXC chemokine ligand 8) is recognized as a potent effector of neutrophil functions. IL-8 is a major response factor following NfkB activation by cytokines or lipopolysaccharide and several different cell types T lymphocytes, monocytes, epithelial and endothelial cells secrete this polypeptide. IL-8 is not to be determined at significant concentrations in plasma due to its receptor binding but may play a major role in tissues. The prediction of sepsis is a major and current field of research in the treatment of surgical patients. The aim of this study was to compare the determination of IL-8 in whole blood cell lysates (whole blood IL-8) and in plasma for the prediction of sepsis in postoperative intensive care. ⋯ Sepsis is a complex disease and is induced by systemic infection of patients suffering from systemic inflammatory response syndromes (SIRS). Therefore, the identification of infection or the host response to infection is of crucial importance. The prediction of an individual marker or interleukin or its binding to surface proteins is not necessarily indicative for sepsis. In cases with unequivocally identified bacterial infections, the current results suggest that whole blood IL-8 may have a similar diagnostic accuracy as plasma levels. Of note, this technique needs less blood and is not being affected by hemolysis.