RESUMO
PURPOSE: Over 170 biomarkers are being investigated regarding their prognostic and diagnostic accuracy in sepsis in order to find new tools to reduce morbidity and mortality. Matrix metalloproteinases (MMPs) and their inhibitors have been recently studied as promising new prognostic biomarkers in patients with sepsis. This study is aimed at determining the utility of several cutoff points of these biomarkers to predict mortality in patients with sepsis. MATERIALS AND METHODS: A multicenter, prospective, analytic cohort study was performed in the metropolitan area of Bucaramanga, Colombia. A total of 289 patients with sepsis and septic shock were included. MMP-9, MMP-2, tissue inhibitor of metalloproteinase 1 (TIMP-1), TIMP-2, TIMP-1/MMP-9 ratio, and TIMP-2/MMP-2 ratio were determined in blood samples. Value ranges were correlated with mortality to estimate sensitivity, specificity, positive predictive value, negative predictive value, and area under the receiving operating characteristic curve. RESULTS: Sensitivity ranged from 33.3% (MMP-9/TIMP-1 ratio) to 60.6% (TIMP-1) and specificity varied from 38.8% (MMP-2/TIMP-2 ratio) to 58.5% (TIMP-1). As for predictive values, positive predictive value range was from 17.5% (MMP-9/TIMP-1 ratio) to 70.4% (MMP-2/TIMP-2 ratio), whereas negative predictive values were between 23.2% (MMP-2/TIMP-2 ratio) and 80.9% (TIMP-1). Finally, area under the curve scores ranged from 0.31 (MMP-9/TIMP-1 ratio) to 0.623 (TIMP-1). CONCLUSION: Although TIMP-1 showed higher sensitivity, specificity, and negative predictive value, with a representative population sample, we conclude that none of the evaluated biomarkers had significant predictive value for mortality.
Assuntos
Sepse/sangue , Choque Séptico/sangue , Inibidor Tecidual de Metaloproteinase-1/sangue , Inibidores Teciduais de Metaloproteinases/sangue , Adulto , Idoso , Biomarcadores/sangue , Feminino , Humanos , Masculino , Metaloproteinases da Matriz , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Estudos Prospectivos , Curva ROC , Sensibilidade e Especificidade , Sepse/mortalidadeRESUMO
BACKGROUND: Sepsis is a potentially mortal infection which is related to multiple organ dysfunction; it has a high morbidity and mortality. Myocardial dysfunction is frequent in sepsis and it is related to unfavorable outcomes. Objective: To describe by transthoracic echocardiography the clinical distribution of myocardial dysfunction in sepsis and septic shock and estimate its prognostic utility. MATERIAL AND METHODS: Cross-sectional study based on a multi-centric prospective cohort study in 4 reference centers in Bucaramanga, Colombia, and its metropolitan area. 271 patients with sepsis and septic shock were included; they underwent standard transthoracic echocardiography and a 30-day follow-up. RESULTS: There was no difference in the left ventricular ejection fraction (p = 0.061) between survivors and non-survivors. 51 patients (48.71%) had grade I diastolic dysfunction, 48 patients (14.52%) had grade II dysfunction and 21 patients (36.75%) had grade III diastolic dysfunction. Mortality was higher in patients with grade I diastolic dysfunction when compared to those with grade II dysfunction (p = 0.023). CONCLUSIONS: The higher mortality in grade I diastolic dysfunction suggests that patients with low filling pressures have worst outcomes. On the other hand, left ventricular ejection fraction per se is not associated with a higher mortality in sepsis.
INTRODUCCIÓN: la sepsis es una disfunción orgánica potencialmente mortal que está asociada a una infección; tiene alta morbilidad y mortalidad. La disfunción miocárdica asociada a sepsis es frecuente y se asocia con desenlaces desfavorables. OBJETIVO: describir la distribución de la disfunción miocárdica por ecocardiografía transtorácica y estimar su utilidad pronóstica en sepsis y choque séptico. MATERIAL Y MÉTODOS: estudio de cohorte multicéntrico prospectivo, realizado en cuatro centros de referencia de Bucaramanga y su área metropolitana. Se incluyeron 271 pacientes con diagnóstico de sepsis y choque séptico, a quienes se les realizó ecocardiograma transtorácico y se les dio seguimiento por 30 días. RESULTADOS: no hubo diferencias en la fracción de eyección del ventrículo izquierdo entre sobrevivientes a los 30 días y no sobrevivientes. Se registraron 51 pacientes (48.7%) con disfunción diastólica grado I, 14.5% con disfunción grado II y 36.75% con disfunción grado III. Los pacientes con disfunción diastólica grado I tuvieron una mortalidad más alta que aquellos con disfunción diastólica de grado II (p = 0.023). CONCLUSIONES: la mayor mortalidad registrada en la disfunción diastólica grado I sugiere que los pacientes con bajas presiones de llenado tienen peores desenlaces. Por otra parte, la fracción de eyección del ventrículo izquierdo por sí sola no se relaciona con mayor mortalidad en sepsis.
Assuntos
Sepse , Choque Séptico , Estudos Transversais , Humanos , Prognóstico , Estudos Prospectivos , Sepse/complicações , Sepse/diagnóstico , Choque Séptico/diagnóstico , Volume Sistólico , Função Ventricular EsquerdaRESUMO
Evidence from our laboratory has shown alterations in myocardial structure in severe sepsis/septic shock. The morphological alterations are heralded by sarcolemmal damage, characterized by increased plasma membrane permeability caused by oxidative damage to lipids and proteins. The critical importance of the dystrophin-glycoprotein complex (DGC) in maintaining sarcolemmal stability led us to hypothesize that loss of dystrophin and associated glycoproteins could be involved in early increased sarcolemmal permeability in experimentally induced septic cardiomyopathy. Male C57Bl/6 mice were subjected to sham operation and moderate (MSI) or severe (SSI) septic injury induced by cecal ligation and puncture (CLP). Using western blot and immunofluorescence, a downregulation of dystrophin and beta-dystroglycan expression in both severe and moderate injury could be observed in septic hearts. The immunofluorescent and protein amount expressions of laminin-alpha2 were similar in SSI and sham-operated hearts. Consonantly, the evaluation of plasma membrane permeability by intracellular albumin staining provided evidence of severe injury of the sarcolemma in SSI hearts, whereas antioxidant treatment significantly attenuated the loss of sarcolemmal dystrophin expression and the increased membrane permeability. This study offers novel and mechanistic data to clarify subcellular events in the pathogenesis of cardiac dysfunction in severe sepsis. The main finding was that severe sepsis leads to a marked reduction in membrane localization of dystrophin and beta-dystroglycan in septic cardiomyocytes, a process that may constitute a structural basis of sepsis-induced cardiac depression. In addition, increased sarcolemmal permeability suggests functional impairment of the DGC complex in cardiac myofibers. In vivo observation that antioxidant treatment significantly abrogated the loss of dystrophin expression and plasma membrane increased permeability supports the hypothesis that oxidative damage may mediate the loss of dystrophin and beta-dystroglycan in septic mice. These abnormal parameters emerge as therapeutic targets and their modulation may provide beneficial effects on future cardiovascular outcomes and mortality in sepsis.
Assuntos
Cardiomiopatias/fisiopatologia , Distroglicanas/fisiologia , Distrofina/fisiologia , Miócitos Cardíacos/fisiologia , Sarcolema/fisiologia , Sepse/fisiopatologia , Animais , Cardiomiopatias/etiologia , Modelos Animais de Doenças , Masculino , Camundongos , Sepse/complicações , Sepse/terapiaRESUMO
INTRODUCTION: Matrix metalloproteinase-9 (MMP-9) plays an important role in the pathophysiology of sepsis. A single-nucleotide polymorphism (SNP) at position -1562 (C/T) in the MMP-9 gene has been associated with differential MMP-9 expression, being higher when the -1562 T allele is present. We evaluated the association of the SNP MMP9 -1562 C/T with severity and mortality in patients with sepsis to establish whether the prognosis of the disease is affected. MATERIALS AND METHODS: A case-control study exploratory was carried out in a cohort of infected patients. 540 individuals were selected in total, 270 patients with sepsis and 270 controls (infected but non-septic), classified according to the 2016 consensus (Sepsis-3). The presence of the single-nucleotide polymorphism (SNP; allele T and/or allele C) was determined through analyses of restriction fragment length polymorphism and plasma levels of MMP-9 were determined through enzyme-linked immunosorbent assay immunoassay. RESULTS: SNP MMP-9 -1562 has two known alleles (T and C), with predominance of the C over the T allele; in the group of patients with sepsis, T allele was found in 7.2% of cases, while C allele in the rest (92.8%); in comparison, in the group of infected but non-septic patients, frequencies were 9.4% for T allele and 90.6% for the C allele (P = .33). Also, the presence of the polymorphic T allele was not related to the levels of MMP-9 in patients with sepsis in comparison with infected but non-septic patients 780 (397-1375) ng/mL vs 646 (172-1249) ng/mL (P = .64). There was also no association between the SNP and sepsis mortality (P = .78). CONCLUSIONS: We concluded that there was no association between the SNP MMP9 -1562 C/T and sepsis or between the SNP MMP9 -1562 C/T and sepsis mortality in the Northeastern Colombian septic patient cohort. Further research is needed to clarify the correlation among sepsis, genetic factors with allele T and MMP-9 plasma concentration.
RESUMO
INTRODUCTION: Matrix metalloproteinases and tissue inhibitors of metalloproteinases could be promising biomarkers for establishing prognosis during the development of sepsis. It is necessary to clarify the relationship between matrix metalloproteinases and their tissue inhibitors. We conducted a cohort study with 563 septic patients, in order to elucidate the biological role and significance of these inflammatory biomarkers and their relationship to the severity and mortality of patients with sepsis. MATERIALS AND METHODS: A multicentric prospective cohort was performed. The sample was composed of patients who had sepsis as defined by the International Conference 2001. Serum procalcitonin, creatinine, urea nitrogen, C-Reactive protein, TIMP1, TIMP2, MMP2 and MMP9 were quantified; each patient was followed until death or up to 30 days. A descriptive analysis was performed by calculating the mean and the 95% confidence interval for continuous variables and proportions for categorical variables. A multivariate logistic regression model was constructed by the method of intentional selection of covariates with mortality at 30 days as dependent variable and all the other variables as predictors. RESULTS: Of the 563 patients, 68 patients (12.1%) died within the first 30 days of hospitalization in the ICU. The mean values for TIMP1, TIMP2 and MMP2 were lower in survivors, MMP9 was higher in survivors. Multivariate logistic regression showed that age, SOFA and Charlson scores, along with TIMP1 concentration, were statistically associated with mortality at 30 days of septic patients; serum MMP9 was not statistically associated with mortality of patients, but was a confounder of the TIMP1 variable. CONCLUSION: It could be argued that plasma levels of TIMP1 should be considered as a promising prognostic biomarker in the setting of sepsis. Additionally, this study, like other studies with large numbers of septic patients does not support the predictive value of TIMP1 / MMP9.
Assuntos
Serviço Hospitalar de Emergência/estatística & dados numéricos , Unidades de Terapia Intensiva/estatística & dados numéricos , Metaloproteinase 9 da Matriz/sangue , Sepse/sangue , Inibidor Tecidual de Metaloproteinase-1/sangue , Idoso , Nitrogênio da Ureia Sanguínea , Proteína C-Reativa/análise , Calcitonina/sangue , Creatinina/sangue , Feminino , Humanos , Modelos Logísticos , Masculino , Metaloproteinase 2 da Matriz/sangue , Pessoa de Meia-Idade , Análise Multivariada , Prognóstico , Estudos Prospectivos , Sepse/mortalidade , Taxa de Sobrevida , Inibidor Tecidual de Metaloproteinase-2/sangueRESUMO
Introducción: la sepsis es una disfunción orgánica poten- cialmente mortal que está asociada a una infección; tiene alta morbilidad y mortalidad. La disfunción miocárdica aso- ciada a sepsis es frecuente y se asocia con desenlaces desfavorables. Objetivo: describir la distribución de la disfunción miocárdica por ecocardiografía transtorácica y estimar su utilidad pronóstica en sepsis y choque séptico. Material y métodos: estudio de cohorte multicéntrico prospectivo, realizado en cuatro centros de referencia de Bucaramanga y su área metropolitana. Se incluyeron 271 pacientes con diagnóstico de sepsis y choque séptico, a quienes se les realizó ecocardiograma transtorácico y se les dio seguimiento por 30 días. Resultados: no hubo diferencias en la fracción de eyección del ventrículo izquierdo entre sobrevivientes a los 30 días y no sobrevivientes. Se registraron 51 pacientes (48.7%) con disfunción diastólica grado I, 14.5% con disfunción grado II y 36.75% con disfunción grado III. Los pacientes con disfunción diastólica grado I tuvieron una mortalidad más alta que aquellos con disfunción diastólica de grado II (p = 0.023). Conclusiones: la mayor mortalidad registrada en la disfunción diastólica grado I sugiere que los pacientes con bajas presiones de llenado tienen peores desenlaces. Por otra parte, la fracción de eyección del ventrículo izquierdo por sí sola no se relaciona con mayor mortalidad en sepsis.
Background: Sepsis is a potentially mortal infection which is related to multiple organ dysfunction; it has a high morbidity and mortality. Myocardial dysfunction is frequent in sepsis and it is related to unfavorable outcomes. Objective: To describe by transthoracic echocardiography the clinical distribution of myocardial dysfunction in sepsis and septic shock and estimate its prognostic utility. Material and methods: Cross-sectional study based on a multi-centric prospective cohort study in 4 reference centers in Bucaramanga, Colombia, and its metropolitan area. 271 patients with sepsis and septic shock were included; they underwent standard transthoracic echocardiography and a 30-day follow-up. Results: There was no difference in the left ventricular ejection fraction (p = 0.061) between survivors and non-survivors. 51 patients (48.71%) had grade I diastolic dys-function, 48 patients (14.52%) had grade II dysfunction and 21 patients (36.75%) had grade III diastolic dysfunction. Mortality was higher in patients with grade I diastolic dysfunction when compared to those with grade II dysfunction (p = 0.023). Conclusions: The higher mortality in grade I diastolic dysfunction suggests that patients with low filling pressures have worst outcomes. On the other hand, left ventricular ejection fraction per se is not associated with a higher mortality in sepsis.
Assuntos
Humanos , Choque Séptico , Estudos Prospectivos , Estudos de Coortes , Ecocardiografia , Causas de Morte , SepseRESUMO
Introducción. Dentro de las infecciones bacterianas que afectan al ser humano, la infección de las vías urinarias es una de las más frecuentes, afectando hasta 150 millones de personas en el mundo cada año. El uso indiscriminado de antibióticos y su manejo inadecuado han generado un aumento en la resistencia antimicrobiana. El objetivo del presente estudio es describir patrones fenotípicos de resistencia antimicrobiana de los microorganismos más frecuentes en pacientes con diagnóstico de infección de vías urinarias en centro de referencia de Bucaramanga. Metodología. Estudio de corte transversal, muestreo no probabilístico en pacientes con sospecha o diagnóstico de infecciones de vías urinarias que requirieron manejo intrahospitalario en una institución de salud de alta complejidad durante julio del 2017 y abril del 2018, de quienes se obtuvo urocultivo y antibiograma. Resultados. De 120 pacientes incluidos, se obtuvo un reporte de 116 urocultivos. El microorganismo más frecuente fue Escherichia coli, seguido de Klebsiella pneumoniae. El primero presentó alta sensibilidad a carbapenémicos y aminoglucósidos, baja sensibilidad a la Ceftriaxona y a la Ampicilina/Sulbactam. Por otro lado, el microorganismo Klebsiella pneumoniae presentó alta sensibilidad a carbapenémicos, pero resistencia elevada a la Ampicilina/Sulbactam y a la Ceftriaxona. El antibiótico empírico más utilizado fue la Ceftriaxona. Discusión. La distribución de microorganismos aislados es comparable con la ya descrita a nivel nacional e internacional. Los perfiles de resistencia antimicrobiana tienen puntos comunes como la resistencia a los betalactámicos, pero difieren en algunos aspectos, como la resistencia a cefalosporinas y quinolonas. Conclusiones. Los microorganismos aislados presentan altas tasas de resistencia a los betalactámicos y a las cefalosporinas, las cuales son ampliamente utilizadas. Esta información debe orientar el desarrollo de protocolos que permitan optimizar la toma de decisiones clínicas con respecto a la terapia antibiótica. Cómo citar. Delgado-Serrano J, Albarracín MJ, Rangel-Vera JA, Galeano-Salazar E, Niño-Vargas D, Wilches-Cuadros MA, Et al. Perfil de resistencia antimicrobiana de aislamientos bacterianos en pacientes con infección urinaria de un centro de referencia en Bucaramanga. MedUNAB. 2020;23(3):405-413. Doi: doi.org/10.29375/01237047.3950
Introduction. Among the bacterial infections that affect human beings, urinary tract infections are one of the most common, affecting up to 150 million people worldwide each year. Indiscriminate use of antibiotics and their improper handling has generated an increase in microbial resistance. This study's objective is to describe the phenotypic patterns of antimicrobial resistance of the most frequent microorganisms in patients with urinary tract infection diagnoses in a reference center in Bucaramanga. Methodology. A cross-sectional study with non probability sampling on patients with suspected or diagnosed urinary tract infections who required hospital treatment at a high-complexity health institution during July, 2017 and April, 2018, from whom urine cultures and antibiograms were obtained. Results. Out of 120 patients, a report was obtained for 116 urine cultures. The most frequent microorganism was Escherichia coli, followed by Klebsiella pneumoniae. The former presented high sensitivity to carbapenem antibiotics and aminoglycosides and low sensitivity to Ceftriaxone and Ampicillin/Sulbactam. On the other hand, the microorganism Klebsiella pneumoniae presented high sensitivity to carbapenem antibiotics, but elevated resistance to Ceftriaxone and Ampicillin/Sulbactam. The empiric antibiotic used most was Ceftriaxone. Discussion. The distribution of isolated microorganisms is comparable to that which has been described nationally and internationally. Antimicrobial resistance profiles have points in common, such as resistance to beta-lactams, but differ in some aspects, such as resistance to cephalosporins and quinolones. Conclusions. Isolated microorganisms present high rates of resistance to beta-lactams and cephalosporins, which are widely used. This information must guide developing protocols that allow optimizing clinical decision-making with respect to antibiotic therapy. Cómo citar. Delgado-Serrano J, Albarracín MJ, Rangel-Vera JA, Galeano-Salazar E, Niño-Vargas D, Wilches-Cuadros MA, Et al. Perfil de resistencia antimicrobiana de aislamientos bacterianos en pacientes con infección urinaria de un centro de referencia en Bucaramanga. MedUNAB. 2020;23(3):414-422. Doi: doi.org/10.29375/01237047.3950
Introdução. Dentre as infecções bacterianas que afetam o homem, a infecção do trato urinário é uma das mais frequentes, afetando até 150 milhões de pessoas no mundo a cada ano. O uso indiscriminado de antibióticos e seu manejo inadequado têm gerado aumento da resistência antimicrobiana. O objetivo deste estudo é descrever padrões fenotípicos de resistência antimicrobiana dos microrganismos mais frequentes em pacientes com diagnóstico de infecção do trato urinário em um centro de referência em Bucaramanga. Métodos. Estudo transversal, com amostra não probabilística, em pacientes com suspeita ou diagnóstico de ITU que precisaram de manejo intra-hospitalar em uma instituição de saúde de alta complexidade no período de julho de 2017 a abril de 2018. Foram obtidos urocultura e antibiograma desses pacientes. Resultados. De 120 pacientes incluídos, foi obtido um relatório de 116 uroculturas. O microrganismo mais frequente foi Escherichia coli, seguido por Klebsiella pneumoniae. O primeiro apresentou alta sensibilidade a carbapenêmicos e aminoglicosídeos e baixa sensibilidade a Ceftriaxona e a Ampicilina/Sulbactam. Por outro lado, o microrganismo Klebsiella pneumoniae apresentou alta sensibilidade a carbapenêmicos, mas alta resistência a Ampicilina/Sulbactam e a Ceftriaxona. O antibiótico empírico mais amplamente utilizado foi a Ceftriaxona. Discussão. A distribuição dos microrganismos isolados é comparável àquela já descrita a nível nacional e internacional. Os perfis de resistência antimicrobiana têm pontos comuns como resistência aos beta-lactâmicos, mas diferem em alguns aspectos, como resistência às cefalosporinas e quinolonas. Conclusão. Microrganismos isolados apresentam altas taxas de resistência aos beta-lactâmicos e cefalosporinas, que são amplamente utilizados. Esta informação deve nortear o desenvolvimento de protocolos que permitam otimizar a tomada de decisão clínica em relação à antibioticoterapia. Cómo citar. Delgado-Serrano J, Albarracín MJ, Rangel-Vera JA, Galeano-Salazar E, Niño-Vargas D, Wilches-Cuadros MA, Et al. Perfil de resistencia antimicrobiana de aislamientos bacterianos en pacientes con infección urinaria de un centro de referencia en Bucaramanga. MedUNAB. 2020;23(3):405-413. Doi: doi.org/10.29375/01237047.3950
Assuntos
Infecções Urinárias , Infecções Bacterianas , Testes de Sensibilidade Microbiana , Anti-InfecciososRESUMO
Introduction. Among the bacterial infections that affect human beings, urinary tract infections are one of the most common, affecting up to 150 million people worldwide each year. Indiscriminate use of antibiotics and their improper handling has generated an increase in microbial resistance. This study's objective is to describe the phenotypic patterns of antimicrobial resistance of the most frequent microorganisms in patients with urinary tract infection diagnoses in a reference center in Bucaramanga. Methodology. A cross-sectional study with non probability sampling on patients with suspected or diagnosed urinary tract infections who required hospital treatment at a high-complexity health institution during July, 2017 and April, 2018, from whom urine cultures and antibiograms were obtained. Results. Out of 120 patients, a report was obtained for 116 urine cultures. The most frequent microorganism was Escherichia coli, followed by Klebsiella pneumoniae. The former presented high sensitivity to carbapenem antibiotics and aminoglycosides and low sensitivity to Ceftriaxone and Ampicillin/Sulbactam. On the other hand, the microorganism Klebsiella pneumoniae presented high sensitivity to carbapenem antibiotics, but elevated resistance to Ceftriaxone and Ampicillin/Sulbactam. The empiric antibiotic used most was Ceftriaxone. Discussion. The distribution of isolated microorganisms is comparable to that which has been described nationally and internationally. Antimicrobial resistance profiles have points in common, such as resistance to beta-lactams, but differ in some aspects, such as resistance to cephalosporins and quinolones. Conclusions. Isolated microorganisms present high rates of resistance to beta-lactams and cephalosporins, which are widely used. This information must guide developing protocols that allow optimizing clinical decision-making with respect to antibiotic therapy. Cómo citar. Delgado-Serrano J, Albarracín MJ, Rangel-Vera JA, Galeano-Salazar E, Niño-Vargas D, Wilches-Cuadros MA, Et al. Perfil de resistencia antimicrobiana de aislamientos bacterianos en pacientes con infección urinaria de un centro de referencia en Bucaramanga. MedUNAB. 2020;23(3):414-422. Doi: doi.org/10.29375/01237047.3950
Introducción. Dentro de las infecciones bacterianas que afectan al ser humano, la infección de las vías urinarias es una de las más frecuentes, afectando hasta 150 millones de personas en el mundo cada año. El uso indiscriminado de antibióticos y su manejo inadecuado han generado un aumento en la resistencia antimicrobiana. El objetivo del presente estudio es describir patrones fenotípicos de resistencia antimicrobiana de los microorganismos más frecuentes en pacientes con diagnóstico de infección de vías urinarias en centro de referencia de Bucaramanga. Metodología. Estudio de corte transversal, muestreo no probabilístico en pacientes con sospecha o diagnóstico de infecciones de vías urinarias que requirieron manejo intrahospitalario en una institución de salud de alta complejidad durante julio del 2017 y abril del 2018, de quienes se obtuvo urocultivo y antibiograma. Resultados. De 120 pacientes incluidos, se obtuvo un reporte de 116 urocultivos. El microorganismo más frecuente fue Escherichia coli, seguido de Klebsiella pneumoniae. El primero presentó alta sensibilidad a carbapenémicos y aminoglucósidos, baja sensibilidad a la Ceftriaxona y a la Ampicilina/Sulbactam. Por otro lado, el microorganismo Klebsiella pneumoniae presentó alta sensibilidad a carbapenémicos, pero resistencia elevada a la Ampicilina/Sulbactam y a la Ceftriaxona. El antibiótico empírico más utilizado fue la Ceftriaxona. Discusión. La distribución de microorganismos aislados es comparable con la ya descrita a nivel nacional e internacional. Los perfiles de resistencia antimicrobiana tienen puntos comunes como la resistencia a los betalactámicos, pero difieren en algunos aspectos, como la resistencia a cefalosporinas y quinolonas. Conclusiones. Los microorganismos aislados presentan altas tasas de resistencia a los betalactámicos y a las cefalosporinas, las cuales son ampliamente utilizadas. Esta información debe orientar el desarrollo de protocolos que permitan optimizar la toma de decisiones clínicas con respecto a la terapia antibiótica. Cómo citar. Delgado-Serrano J, Albarracín MJ, Rangel-Vera JA, Galeano-Salazar E, Niño-Vargas D, Wilches-Cuadros MA, Et al. Perfil de resistencia antimicrobiana de aislamientos bacterianos en pacientes con infección urinaria de un centro de referencia en Bucaramanga. MedUNAB. 2020;23(3):405-413. Doi: doi.org/10.29375/01237047.3950
Introdução. Dentre as infecções bacterianas que afetam o homem, a infecção do trato urinário é uma das mais frequentes, afetando até 150 milhões de pessoas no mundo a cada ano. O uso indiscriminado de antibióticos e seu manejo inadequado têm gerado aumento da resistência antimicrobiana. O objetivo deste estudo é descrever padrões fenotípicos de resistência antimicrobiana dos microrganismos mais frequentes em pacientes com diagnóstico de infecção do trato urinário em um centro de referência em Bucaramanga. Métodos. Estudo transversal, com amostra não probabilística, em pacientes com suspeita ou diagnóstico de ITU que precisaram de manejo intra-hospitalar em uma instituição de saúde de alta complexidade no período de julho de 2017 a abril de 2018. Foram obtidos urocultura e antibiograma desses pacientes. Resultados. De 120 pacientes incluídos, foi obtido um relatório de 116 uroculturas. O microrganismo mais frequente foi Escherichia coli, seguido por Klebsiella pneumoniae. O primeiro apresentou alta sensibilidade a carbapenêmicos e aminoglicosídeos e baixa sensibilidade a Ceftriaxona e a Ampicilina/Sulbactam. Por outro lado, o microrganismo Klebsiella pneumoniae apresentou alta sensibilidade a carbapenêmicos, mas alta resistência a Ampicilina/Sulbactam e a Ceftriaxona. O antibiótico empírico mais amplamente utilizado foi a Ceftriaxona. Discussão. A distribuição dos microrganismos isolados é comparável àquela já descrita a nível nacional e internacional. Os perfis de resistência antimicrobiana têm pontos comuns como resistência aos beta-lactâmicos, mas diferem em alguns aspectos, como resistência às cefalosporinas e quinolonas. Conclusão. Microrganismos isolados apresentam altas taxas de resistência aos beta-lactâmicos e cefalosporinas, que são amplamente utilizados. Esta informação deve nortear o desenvolvimento de protocolos que permitam otimizar a tomada de decisão clínica em relação à antibioticoterapia. Cómo citar. Delgado-Serrano J, Albarracín MJ, Rangel-Vera JA, Galeano-Salazar E, Niño-Vargas D, Wilches-Cuadros MA, Et al. Perfil de resistencia antimicrobiana de aislamientos bacterianos en pacientes con infección urinaria de un centro de referencia en Bucaramanga. MedUNAB. 2020;23(3):405-413. Doi: doi.org/10.29375/01237047.3950
Assuntos
Infecções Urinárias , Infecções Bacterianas , Testes de Sensibilidade Microbiana , Anti-InfecciososRESUMO
This study describes increased sarcolemmal permeability and myofilamentar damage that occur together with lipid peroxidation and protein nitration in the myocardium in severe sepsis induced by cecal ligation and puncture. Male C57BL/6 mice were submitted to moderate and severe septic injury and sham operation. Using light and laser confocal microscopy, diffuse foci of myocytolysis associated with focal disruption of the actin/myosin contractile apparatus could be seen in hearts with severe septic injury. The myocardial expressions of the sarcomeric proteins myosin and actin were downregulated by both severe and moderate injuries. The detection of albumin staining in the cytoplasm of myocytes to evaluate sarcolemmal permeability provided evidence of severe and mild injury of the plasma membrane in hearts with severe and moderate septic injury, respectively. The administration of a superoxide scavenger caused marked reduction of sarcolemmal permeability, indicating the involvement of free radicals in its genesis. On electron microscopy, these changes were seen to correspond to spread blocks of a few myocytes with fragmentation and dissolution of myofibrils, intracellular edema, and, occasionally, rupture of the sarcolemma. In addition, oxidative damage to lipids, using anti-4-hydroxynonenal, an indicator of oxidative stress and disruption of plasma membrane lipids, and to proteins, using antinitrotyrosine, a stable biomarker of peroxynitrite-mediated protein nitration, was demonstrated. These findings make plausible the hypothesis that increased sarcolemmal permeability might be a primary event in myocardial injury in severe sepsis possibly due to oxidative damage to lipids and proteins that could precede phenotypic changes that characterize a septic cardiomyopathy.
Assuntos
Cardiomiopatias/fisiopatologia , Sarcolema/fisiologia , Sepse/fisiopatologia , Actinas/biossíntese , Aldeídos/metabolismo , Animais , Cardiomiopatias/metabolismo , Cardiomiopatias/patologia , Ceco/lesões , Regulação para Baixo , Ligadura , Peroxidação de Lipídeos , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Modelos Animais , Miocárdio/metabolismo , Miocárdio/patologia , Miosinas/biossíntese , Permeabilidade/efeitos dos fármacos , Proteínas/metabolismo , Punções , Sepse/metabolismoRESUMO
Introducción: La mortalidad asociada con sepsis e infecciones complicadas no se conoce en el departamento de Santander. Materiales y métodos: Se cuantificó la mortalidad por múltiples causas de muerte relacionadas con sepsis e infecciones complicadas. Los datos provienen de la base de datos de defunciones DANE año 2008. Se calcularon tasas específicas por edad, por sexo y tasas de mortalidad estandarizadas por edad utilizando el método directo. Resultados: En 2008, el 9% de las defunciones se asociaron con sepsis, 1 de cada 10 muertes. Los códigos CIE-10 relacionados como causas subyacentes de sepsis son diversos, aunque la neumonía, la enfermedad por virus del VIH y las infecciones urinarias son las más frecuentes en los diferentes grupos de edad. La mayor mortalidad ajustada se presenta en hombres y en los extremos de la vida. Conclusiones: Sepsis es un problema de salud pública en Santander. Este estudio se constituye en una línea de base para la evaluación de medidas para reducir la mortalidad por esta patología.
Introduction: The mortality associated with sepsis and complicated infections are not known in the department of Santander. Materials and methods: Mortality due to multiple causes related to sepsis and infections complicated was quantified. The data come from the DANE deaths database in 2008. Specific rates by age, sex and age-standardized mortality were calculated using the direct method. Results: In 2008, 9% of deaths were associated with sepsis, 1 in 10 deaths. ICD-10 codes related as underlying causes of sepsis are diverse but pneumonia, HIV virus disease and urinary tract infections are the most common in different age groups. The highest adjusted mortality was presented in men and in the extreme age groups. Conclusions: Sepsis is a public health problem in the department of Santander. This study provides a baseline for the evaluation of measures to reduce mortality from this disease.
Assuntos
Humanos , Classificação Internacional de Doenças , Epidemiologia , Mortalidade , Sepse , InfecçõesRESUMO
The strong inflammatory reaction that occurs in the heart during the acute phase of Trypanosoma cruzi infection is modulated by cytokines and chemokines produced by leukocytes and cardiomyocytes. Matrix metalloproteinases (MMPs) have recently emerged as modulators of cardiovascular inflammation. In the present study we investigated the role of MMP-2 and MMP-9 in T. cruzi-induced myocarditis, by use of immunohistochemical analysis, gelatin zymography, enzyme-linked immunosorbent assay, and real-time polymerase chain reaction to analyze the cardiac tissues of T. cruzi-infected C57BL/6 mice. Increased transcripts levels, immunoreactivity, and enzymatic activity for MMP-2 and MMP-9 were observed by day 14 after infection. Mice treated with an MMP inhibitor showed significantly decreased heart inflammation, delayed peak in parasitemia, and improved survival rates, compared with the control group. Reduced levels of cardiac tumor necrosis factor-alpha, interferon-gamma, serum nitrite, and serum nitrate were also observed in the treated group. These results suggest an important role for MMPs in the induction of T. cruzi-induced acute myocarditis.
Assuntos
Doença de Chagas/mortalidade , Metaloproteinase 2 da Matriz/metabolismo , Metaloproteinase 9 da Matriz/metabolismo , Miocárdio/patologia , Trypanosoma cruzi/fisiologia , Animais , Doença de Chagas/patologia , Citocinas/biossíntese , Feminino , Perfilação da Expressão Gênica , Metaloproteinase 2 da Matriz/genética , Metaloproteinase 9 da Matriz/genética , Camundongos , Camundongos Endogâmicos C57BL , Nitratos/sangue , Nitritos/sangue , Parasitemia , Reação em Cadeia da Polimerase Via Transcriptase Reversa/métodos , Análise de Sobrevida , Fatores de TempoRESUMO
OBJECTIVE: The present study describes intercalated disc remodeling under both protein expression and structural features in experimental severe sepsis induced by cecal ligation and puncture in mice. DESIGN: Controlled animal study. SETTING: University research laboratory. SUBJECTS: Male C57BL/6 mice. INTERVENTIONS: Mice were submitted to moderate and severe septic injury by cecal ligation and puncture. MEASUREMENT AND MAIN RESULTS: Severe septic injury was accompanied by a large number of bacteria in the peritoneal cavity and blood, high levels of tumor necrosis factor-alpha, and monocyte inflammatory protein-1alpha in the septic focus and serum, marked hypotension, and a high mortality rate. Western blot analysis and immunofluorescence showed a marked decrease of key gap and adherens junction proteins (connexin43 and N-cadherin, respectively) in mice submitted to severe septic injury. These changes may result in the loss of intercalated disc structural integrity, characterized in the electron microscopic study by partial separation or dehiscence of gap junctions and adherens junctions. CONCLUSIONS: Our data provide important insight regarding the alterations in intercalated disc components resulting from severe septic injury. The intercalated disc remodeling under both protein expression and structural features in experimental severe sepsis induced by cecal ligation and puncture may be partly responsible for myocardial depression in sepsis/septic shock. Although further electrophysiological studies in animals and humans are needed to determine the effect of these alterations on myocardial conduction velocity, the abnormal variables may emerge as therapeutic targets, and their modulation might provide beneficial effects on future cardiovascular outcomes and mortality in sepsis.
Assuntos
Junções Aderentes/química , Conexinas/análise , Miocárdio/química , Miocárdio/ultraestrutura , Sepse/metabolismo , Sepse/patologia , Animais , Caderinas/análise , Ceco , Quimiocina CCL4 , Conexina 43/análise , Imuno-Histoquímica , Ligadura , Proteínas Inflamatórias de Macrófagos/análise , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Punções , Sepse/etiologia , Fator de Necrose Tumoral alfa/análiseRESUMO
Objetivo: El objetivo del presente artículo fue evaluar los factores de riesgo para mortalidad por sepsis severa en cuatro instituciones de cuidado crítico de la ciudad, estudiando variables socio-demográficas, clínicas y microbiológicas. Materiales y métodos: Estudio de cohorte de 150 pacientes admitidos a unidad de cuidado crítico de cuatro unidades del área metropolitana de Bucaramanga, con diagnóstico de sepsis severa o choque séptico. Fueron estudiados mediante un cuestionario sobre variables socio-económicas, clínicas y microbiológicas. Se realizó análisis bivariado con pruebas t de student y chi cuadrado. El análisis multivariado mediante regresión de Cox con el tiempo al evento como variable de desenlace. Resultados: Los pacientes sobrevivientes tuvieron un promedio de edad de 64 años y los no sobrevivientes de 67 años, sin que se demostraran diferencias estadísticas entre los dos grupos de pacientes. No se encontraron diferencias en cuanto al género. El factor de riesgo más importante asociado a mortalidad por sepsis fueron las complicaciones durante la hospitalización, incluso luego de ajustar por el puntaje SOFA inicial, el sitio de infección y los indicadores de respuesta inflamatoria como la hiperlactatemia e hiperbilirrubinemia. Conclusiones: Se encontraron tres modelos de riesgo para mortalidad por sepsis con otras complicaciones durante la hospitalización como el factor de riesgo más relevante y el control glicémico como el factor de protección más importante. [Niño ME, Torres D, Cárdenas ME, Godoy AP, Moreno N, Sanabria V, et al. Factores pronósticos de mortalidad por sepsis severa en unidades de cuidado critico del área metropolitana de Bucaramanga. MedUNAB 2012; 15:7-13].
Objective: We evaluated cases of severe sepsis to search prognosis factors of mortality in our area. Methods: Cohort study of 150 patients admitted in critical care unit from four clinical centers of the city with severe sepsis or shock septic. We analyzed socio-demographic characteristics, clinical and microbiological factors. Bivariate analysis and cox regression model was realized for found prognosis factors. Results: Patients who survived was 64 years old compared with no surviving patients who was 67 years old, there are not differences in sex between them. A risk factor for mortality was complications in hospital after ajust for sofa score, infection site, hyperlactatemia and hyperbilirrubinemia. Conclusion: We found three models of risk for mortality by sepsis, with other complications in hospital as an important factor and glicemic control as a most important protection factor of mortality. [Niño ME, Torres D, Cárdenas ME, Godoy AP, Moreno N, Sanabria V, et al. Association between prognosis factors and mortality in Bucaramanga MedUNAB 2012; 15:7-13].
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Sepse , Prognóstico , Epidemiologia , Mortalidade , Cuidados CríticosRESUMO
La sepsis ocupa el primer lugar entre las causas de mortalidad en las unidades de cuidado intensivo, razón por la cual su comprensión ha sido objetivo de múltiples estudios. Esta patología representa un reto para el médico ya que sus criterios diagnósticos nunca han podido llegar a un consenso, dificultando así su enfoque terapéutico. El panorama de su fisiopatología tampoco ha sido diferente, hasta hace pocos años logró comprenderse que la sepsis se trata de una estrecha relación entre el agente infeccioso y la participación del sistema inmune, particular en cada hospedero, lo cual impulsó el uso de diferentes fármacos dirigidos a contrarrestar esta respuesta, obteniendo resultados algunas veces contradictorios. Todo lo anterior confluye en un gran rompecabezas de conocimientos que poco a poco ha ido descifrándose, en espera de futuras investigaciones que continúen con más avances en la fármaco-terapéutica de la sepsis. [Torres-Dueñas D, Espinosa AE, Alarcón LC, Niño ME, Cárdenas ME. Fármaco-terapéutica de la sepsis: ¡un proceso frustrante y un gran desafío! MedUNAB 2010; 13:13-16].
Sepsis ranks first among causes of death in intensive care units, which is why their understanding has been the subject of several studies. This condition is a medical challenge because its diagnostic criteria have never been able to reach a consensus, thus hidering their therapeutic approach. The overview of its pathophysiology has not been different, until recent years was understood that sepsis is a close relationship between the infectious agent and inmune system involvement, particularly in each host, which prompted the use of different drugs that target to counteract this response, sometimes contradictory results obtained. All this comes together in one big puzzle of knowledge that has gradually been deciphered, awaiting further research to continue with furter progress in the drug-treatment of sepsis. [Torres-Dueñas D, Espinosa Peña AE, Alarcón LC, Niño ME, Cárdenas ME. Drug-treatment of sepsis: a frustrating process and a great challenge! MedUNAB 2010; 13:13-36].
Assuntos
Sepse , Terapêutica , Síndrome de Resposta Inflamatória Sistêmica , Mediadores da InflamaçãoRESUMO
La enfermedad de Chagas es la más grave enfermedad parasitaria de américa Latina y su impacto social y económico es mayor que el impacto combinado de otras enfermadades parasitarias incluida la malaria. Muchos individuos no se detectan en la fase aguda de la enfermedad y progresan a una fase crónica, en la que el paciente se encuentra discapasitado, siendo un porblema para la sociedad productiva. Los antecedentes de la enfermedad y el papel protagónico del macrófago durante su fase aguda, mediado por óxido nítrico (NO), así como el conocimiento de diversas cepas del parasito, ha postulado a esta célula y al NO como claves en la relación hospedero-parásito, al menos experimentalmente. Dada la complejidad de esta interacción, cualquier alteración en la cantidad o calidad de la producción de citoquinas que dirigen la acción del fagocito puede ser indicador del desarrollo de evasión por parte del parásito y de la evolución de la infección a la fase crónica de la enfermedad