Sepsis Archives - Critical Care Science (CCS)
Abstract
Rev Bras Ter Intensiva. 2007;19(1):14-22
DOI 10.1590/S0103-507X2007000100002
BACKGROUND AND OBJECTIVES: The diagnostic and treatment of sepsis continue to challenger all, and, more specific forms to approach are absolutely necessary. The objective of this study was to use proteomics techniques, two-dimensional electrophoresis and mass spectrometry, to verify the differential protein expression between serum of patients with sepsis and health controls. METHODS: Samples of serum the 30 patients with sepsis, caused for different types of microorganisms and serum of 30 health controls were obtained for analysis. Next, were submitted to 2D-SDS-PAGE, gels compared, selection of spots for excision and digestion with trypsin, being the peptides analyzed for MALDI TOF-TOF. The obtained spectrums were processed (Mascot-matrix science) for protein identification in NCBInr Data Bank. RESULTS: Image analyses showed several spots with differential expressions in the gels of the patients with sepsis in relation to the controls. The protein identification of some of these spots founded: Orosomucoid 1 precursor, Apolipoprotein A-IV, Apolipoprotein A-IV precursor, Haptoglobin protein precursor, Haptoglobin, Zinc finger protein, Serum amyloid A-1, Transthyretin, Nebulin, Complement C4, Alpha1-Antitrypsin, Unnamed protein product and others. CONCLUSIONS: Serum of the patients with different types of sepsis express characteristic protein profiles by 2D-SDS-PAGE compared with controls. The most expressed were from acute phase proteins and lipoproteins. It is possible in the future, with proteomics, create diagnostic panel of proteins, finding news biomarkers and targets for therapeutic interventions in sepsis. This is a first description, with proteomics, of the alterations in protein expression, in serum of the patients with sepsis.
Abstract
Rev Bras Ter Intensiva. 2007;19(1):14-22
DOI 10.1590/S0103-507X2007000100002
BACKGROUND AND OBJECTIVES: The diagnostic and treatment of sepsis continue to challenger all, and, more specific forms to approach are absolutely necessary. The objective of this study was to use proteomics techniques, two-dimensional electrophoresis and mass spectrometry, to verify the differential protein expression between serum of patients with sepsis and health controls. METHODS: Samples of serum the 30 patients with sepsis, caused for different types of microorganisms and serum of 30 health controls were obtained for analysis. Next, were submitted to 2D-SDS-PAGE, gels compared, selection of spots for excision and digestion with trypsin, being the peptides analyzed for MALDI TOF-TOF. The obtained spectrums were processed (Mascot-matrix science) for protein identification in NCBInr Data Bank. RESULTS: Image analyses showed several spots with differential expressions in the gels of the patients with sepsis in relation to the controls. The protein identification of some of these spots founded: Orosomucoid 1 precursor, Apolipoprotein A-IV, Apolipoprotein A-IV precursor, Haptoglobin protein precursor, Haptoglobin, Zinc finger protein, Serum amyloid A-1, Transthyretin, Nebulin, Complement C4, Alpha1-Antitrypsin, Unnamed protein product and others. CONCLUSIONS: Serum of the patients with different types of sepsis express characteristic protein profiles by 2D-SDS-PAGE compared with controls. The most expressed were from acute phase proteins and lipoproteins. It is possible in the future, with proteomics, create diagnostic panel of proteins, finding news biomarkers and targets for therapeutic interventions in sepsis. This is a first description, with proteomics, of the alterations in protein expression, in serum of the patients with sepsis.
Abstract
Rev Bras Ter Intensiva. 2007;19(1):23-30
DOI 10.1590/S0103-507X2007000100003
BACKGROUND AND OBJECTIVES: Verify the association between clinical, epidemiological and laboratorial characteristics with mortality of septic patient in an Intensive Care Unit (ICU) from Pernambuco, northeast of Brazil, to improve the attention for patients with sepse which are in risk of developing organ dysfunction. METHODS: Case-control study, without intervention, that included adults' patients admitted in ICU with sepsis or that developed it during ICU stay. RESULTS: It was included 199 patients. After logistic regression, the length of hospital stay more than 72 hours before admission in ICU, evidence of associated co-morbidities, more than three organ failures, and lactate more than 4 mmol/L were associated with mortality. The SOFA score with more than 12 points was associated with precocity mortality (< 72hours). CONCLUSIONS: The septic patients admitted ICU with less than 72h of hospital stay have a better prognosis, and those with a great number of organ failure, and co-morbidities have a superior mortality rate. Between laboratory results, only the high concentration of lactate is associated with mortality.
Abstract
Rev Bras Ter Intensiva. 2007;19(1):23-30
DOI 10.1590/S0103-507X2007000100003
BACKGROUND AND OBJECTIVES: Verify the association between clinical, epidemiological and laboratorial characteristics with mortality of septic patient in an Intensive Care Unit (ICU) from Pernambuco, northeast of Brazil, to improve the attention for patients with sepse which are in risk of developing organ dysfunction. METHODS: Case-control study, without intervention, that included adults' patients admitted in ICU with sepsis or that developed it during ICU stay. RESULTS: It was included 199 patients. After logistic regression, the length of hospital stay more than 72 hours before admission in ICU, evidence of associated co-morbidities, more than three organ failures, and lactate more than 4 mmol/L were associated with mortality. The SOFA score with more than 12 points was associated with precocity mortality (< 72hours). CONCLUSIONS: The septic patients admitted ICU with less than 72h of hospital stay have a better prognosis, and those with a great number of organ failure, and co-morbidities have a superior mortality rate. Between laboratory results, only the high concentration of lactate is associated with mortality.
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