Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 5 de 5
Filter
1.
Arch. argent. pediatr ; 116(4): 275-279, ago. 2018. graf, tab
Article in English, Spanish | LILACS, BINACIS | ID: biblio-1038427

ABSTRACT

Introducción. La obesidad es un problema de salud pública mundial y la enfermedad crónica no transmisible más frecuente. Se asocia con la elevación de proteínas inflamatorias de fase aguda y citocinas proinflamatorias. Objetivo. Evaluar los niveles de proteínas de fase aguda en niños y adolescentes obesos con esteatosis hepática y síndrome agudo metabólico. Metodología. Se incluyeron 45 niños con índice de masa corporal ≥ percentil 95, de edades entre 5,0 y 15,5 años. Se determinaron reactantes de fase aguda: proteína C reactiva, haptoglobina, a-2 macroglobulina y apolipoproteína A-1, y se realizó una ecografía para evaluar la esteatosis hepática. Resultados. Todos los pacientes mostraron una elevación de proteína C reactiva. Los pacientes con síndrome metabólico también tuvieron un incremento en la apolipoproteína A-1 y la haptoglobina. Los pacientes con esteatosis hepática tuvieron un aumento significativo en la a-2 macroglobulina además de la protenína C reactiva.


Introduction. Obesity is a worldwide public health problem and the most common non-communicable chronic disease. It is associated with an increase in inflammatory acute phase proteins and proinflammatory cytokines. Objective. To assess the levels of acute phase proteins in obese children and adolescents with hepatic steatosis and metabolic syndrome. Methodology. Forty-five children with a body mass index ≥ 95th percentile aged 5.0-15.5 years were included. The following acute phase reactants were determined: C-reactive protein, haptoglobin, alpha-2-macroglobulin, and apolipoprotein A-1; besides, an ultrasound was done to assess hepatic steatosis. Results. C-reactive protein levels increased in all patients. Patients with metabolic syndrome also had high levels of apolipoprotein A-1 and haptoglobin. Patients with hepatic steatosis had a significant increase in alpha-2-macroglobulin in addition to high C-reactive protein.


Subject(s)
Humans , Child , Adolescent , alpha-Macroglobulins , C-Reactive Protein , Haptoglobins , Apolipoprotein A-I , Obesity
2.
Rev. bras. ter. intensiva ; 30(1): 21-27, jan.-mar. 2018. tab
Article in Portuguese | LILACS | ID: biblio-899569

ABSTRACT

RESUMO Objetivo: Avaliar o relacionamento entre os níveis cerebrais de ferro e heme e a resposta inflamatória sistêmica e no sistema nervoso central, assim como o papel dos sistemas de defesa contra a toxicidade do ferro e do heme, no sistema nervoso central. Métodos: Avaliamos uma coorte prospectiva de pacientes com quadro de hemorragia intracraniana e subaracnóidea. Realizamos ensaios em amostras de plasma e líquido cefalorraquidiano quanto à presença de ferro, heme, hemopexina, haptoglobina, enolase, S100-β e citocinas nos primeiros 3 dias após um acidente vascular cerebral hemorrágico. Analisamos também as alterações dinâmicas em todos os componentes de ambos os líquidos e seu relacionamento com as taxas de mortalidade precoce. Resultados: As concentrações de hemopexina e haptoglobina foram quase desprezíveis no cérebro após hemorragia intracraniana e subaracnóidea. As concentrações de ferro e heme no líquido cefalorraquidiano se correlacionaram com resposta pró-inflamatória no sistema nervoso central, e os perfis inflamatórios no líquido cefalorraquidiano no terceiro dia após acidente vascular cerebral hemorrágico se correlacionaram com as taxas de mortalidade precoce. Identificamos que os níveis de interleucina 4 no líquido cefalorraquidiano durante as primeiras 24 horas após acidente vascular cerebral hemorrágico foram mais altos nos sobreviventes do que nos que não sobreviveram. Conclusão: Os níveis de ferro e heme se associaram com resposta pró-inflamatória no sistema nervoso central após acidente vascular cerebral hemorrágico, e o cérebro humano não tem proteção contra hemoglobina e heme. Os perfis inflamatórios dos pacientes se associaram com prognósticos piores, e as respostas inflamatórias locais pareceram ter um papel protetor.


ABSTRACT Objective: To evaluate the relationships of brain iron and heme with the inflammatory response of the systemic and central nervous systems and to investigate the role of defensive systems against the toxicity of iron and heme in the central nervous system. Methods: We assessed a prospective cohort of patients presenting with intracerebral and subarachnoid hemorrhage. We assayed plasma and cerebrospinal fluid samples for the presence of iron, heme, hemopexin, haptoglobin, enolase, S100-β and cytokines for the first three days following hemorrhagic stroke. We also analyzed the dynamic changes in these components within both fluids and their relationship with early mortality rates. Results: Hemopexin and haptoglobin concentrations were nearly negligible in the brain after intracerebral and subarachnoid hemorrhage. Cerebrospinal fluid iron and heme concentrations correlated with a pro-inflammatory response in the central nervous system, and plasmatic and cerebrospinal fluid inflammatory profiles on the third day after hemorrhagic stroke were related to early mortality rates. Interleukin 4 levels within the cerebrospinal fluid during the first 24 hours after hemorrhagic stroke were found to be higher in survivors than in non-survivors. Conclusion: Iron and heme are associated with a pro-inflammatory response in the central nervous system following hemorrhagic stroke, and protections against hemoglobin and heme are lacking within the human brain. Patient inflammatory profiles were associated with a poorer prognosis, and local anti-inflammatory responses appeared to have a protective role.


Subject(s)
Humans , Male , Female , Aged , Subarachnoid Hemorrhage/physiopathology , Hemoglobins/metabolism , Cerebral Hemorrhage/physiopathology , Stroke/physiopathology , Brain/physiopathology , Hemopexin/metabolism , Prospective Studies , Cohort Studies , Heme/metabolism , Inflammation/physiopathology , Middle Aged
3.
Salud UNINORTE ; 27(2): 259-274, dic. 2011. tab
Article in Spanish | LILACS-Express | LILACS | ID: lil-637298

ABSTRACT

Se presenta una revisión sobre el síndrome HELLP con mayor énfasis en las nuevas teorías que pretenden explicar la fisiopatología y unas recomendaciones para su manejo. Este síndrome se caracteriza por daño endotelial microvascular; sin embargo, su fisiopatología aún no está bien definida. Existe un creciente interés en las citoquinas inflamatorias, factores genéticos y ambientales en la patogénesis de la misma. Al considerarla una microangiopatía difusa del embarazo se presta atención a los factores angiogénicos, y podría ser explicada por el desbalance de los factores angiogénicos circulantes, caracterizado por altos niveles circulantes de tirosincinasa tipo fms 1 soluble, endoglina y otros factores antiangiogénicos, bajos niveles circulantes de factor de crecimiento placentario y factor de crecimiento endotelial vascular. El impacto sistémico es de tal magnitud que los niveles séricos de proteínas de choque térmico son significativamente superiores en los pacientes con el síndrome HELLP. Para el diagnóstico es preciso la presentación clínica y estudios que demuestren la alteración de los parámetros que lo caracterizan. Se presentan alternativas para los exámenes cotidianos, como la baja concentración de haptoglobina, que puede ser usada para el diagnóstico de hemólisis y es el marcador de preferencia para la misma. La glutatión S-transferasa-a1 plasmático podría ser un indicador más sensible que las transaminasas para diagnóstico temprano de daño hepático. Finalmente se presentan recomendaciones de manejo clínico de la enfermedad, que incluye la necesidad de manejo interdisciplinario en una unidad de cuidados intensivos.


A HELLP syndrome review is presented, with greater emphasis on new theories that seek to explain the pathophysiology and management recommendations. The syndrome is characterized by microvascular endothelial damage. However, the pathophysiology of the syndrome is not yet well defined. There is a growing interest in inflammatory cytokines, genetic and environmental factors in the pathogenesis of the same. To consider it a diffuse Microangiopathy pregnancy pays attention to the angiogenic factors and could be explained by the imbalance of the circulating angiogénics, characterized by high circulating levels of tirosincinasa factors type 1 soluble fins and endoglin and other angiogenic factors and lower circulating levels of placental growth factor and vascular endothelial growth factor. The systemic impact is of such magnitude that serum levels of heat shock proteins are significantly higher in patients with the HELLP syndrome. The diagnosis necessitates the clinical presentation and studies showing the alteration of the parameters that characterize it. Alternatives for everyday exams as the low concentration of which can be used for the diagnosis of hemolysis and is the preference for the same marker haptoglobin are presented. Glutathione S-transferase-al plasma could be a more sensitive transaminases to diagnosis early liver damage. Finally, recommendations are presented for clinical management of the disease, including the need for interdisciplinary management in an intensive care unit.

4.
Arq. bras. cardiol ; 97(4): 338-345, out. 2011. tab
Article in Portuguese | LILACS | ID: lil-606431

ABSTRACT

FUNDAMENTO: Tem sido sugerido que o polimorfismo da haptoglobina pode influenciar na patogênese das complicações microvasculares e macrovasculares em pacientes diabéticos. OBJETIVO: O objetivo principal deste estudo transversal foi de realizar uma investigação da existência ou não de uma associação entre os genótipos de haptoglobina e a prevalência de eventos isquêmicos cardiovasculares (angina estável, angina instável e infarto agudo do miocárdio), hipertensão arterial sistêmica, hipertensão refratária, obesidade e dislipidemia em 120 pacientes com diabete melito tipo 2, seguidos no Hospital Universitário da Unicamp, em Campinas, Estado de São Paulo. MÉTODOS: A genotipagem da haptoglobina foi realizada por reações em cadeia da polimerase alelo-específicas. As frequências dos genótipos de haptoglobina foram comparadas com a presença/ausência de doença cardiovascular, hipertensão arterial sistêmica, hipertensão refratária, obesidade e dislipidemia; medições de pressão arterial sistólica e diastólica; glicemia, colesterol (total, lipoproteínas de alta densidade - HDL e lipoproteínas de baixa densidade - LDL) e triglicerídeos; assim como níveis de creatinina sérica. RESULTADOS: Embora nenhuma associação entre o genótipo de haptoglobina e a presença de doença cardiovascular tenha sido identificada, encontramos um excesso significativo de pacientes com o genótipo Hp2-1 entre as pessoas com hipertensão refratária, que também apresentavam uma maior pressão arterial sistólica e diastólica e níveis de colesterol total e LDL. CONCLUSÃO: Nossos resultados sugerem que os pacientes com diabete melito tipo 2 com o genótipo Hp2-1 podem apresentar uma maior chance de desenvolver hipertensão refratária. Estudos adicionais em populações diabéticas são necessários para confirmar esses achados.


BACKGROUND: It has been suggested that haptoglobin polymorphism may influence the pathogenesis of microvascular and macrovascular complications in diabetic patients. OBJECTIVE: This cross sectional study was carried out to investigate the existence or not of an association between haptoglobin genotypes and prevalence of ischemic cardiovascular events (stable angina, unstable angina and acute myocardial infarction), systemic arterial hypertension, refractory hypertension, obesity and dyslipidemia in 120 type-2 diabetes mellitus patients followed up at Hospital de Clínicas da UNICAMP in Campinas, São Paulo state, southeastern Brazil. METHODS: Haptoglobin genotyping was performed by allele-specific polymerase chain reactions. The frequencies of the haptoglobin genotypes were compared with the presence/absence of cardiovascular disease, systemic arterial hypertension, refractory hypertension, obesity and dyslipidemia; systolic and diastolic blood pressure measurements; plasma levels of glucose, cholesterol (total, high density lipoprotein-HDL and low density lipoprotein-LDL) and triglycerides; and serum creatinine levels. RESULTS: Although no association between haptoglobin genotype and the presence of cardiovascular disease could be identified, we found a significant excess of patients with Hp2-1 genotype among those with refractory hypertension, who also had higher systolic and diastolic blood pressure, and total and LDL cholesterol levels. CONCLUSION: Our results suggest that type-2 diabetes mellitus patients with the Hp2-1 genotype may have higher chances of developing refractory hypertension. Further studies in other diabetic populations are required to confirm these findings.


Subject(s)
Aged , Female , Humans , Male , Middle Aged , /genetics , Haptoglobins/genetics , Hypertension/genetics , Blood Pressure/physiology , Brazil/epidemiology , Cholesterol, LDL/blood , Cholesterol/blood , /complications , /physiopathology , Diastole/physiology , Epidemiologic Methods , Hypertension/epidemiology
5.
Rev. cuba. pediatr ; 69(2): 134-138, Mayo-ago. 1997.
Article in Spanish | LILACS | ID: lil-629582

ABSTRACT

En este estudio se cuantificaron las inmunoglobulinas G, A y M, las proteínas de fase aguda: alfa 1 antitripsina, haptoglobina y ceruloplasmina, así como las zonas de la electroforesis de proteínas, en 153 niños atletas de alto rendimiento y en 140 niños supuestamente sanos con actividad física normal para su edad, en busca de variaciones en estos parámetros con carácter permanente por la práctica sistemática de intensos ejercicios físicos. De las inmunoglobulinas dosificadas sólo estuvo marcadamente elevada la IgM y disminuida la zona alfa 2 en los niños atletas; sin embargo, no se obtuvieron diferencias en las proteínas de fase aguda dosificadas para ambos grupos, así como en las proteínas totales cuantificadas.


In this study, G, A and M immunoglobulins, the acute phase proteins: alpha 1-antitrypsin, haptoglobin and ceruloplasmin, as well as the zones of protein electrophoresis were quantified in 153 sportschildren of high performance and in 140 apparently sound children with normal physical activity according to their age, in order to look for variations in these parameters with permanent character due to the systematic practice of intensive physical exercises. Of the dosified immunoglobulins only IgM was significantly elevated, whereas the alpha 2 zone was diminished among sportschildren. Differences were found neither in the actue phase proteins dosified for both groups nor in the quantified total proteins.

SELECTION OF CITATIONS
SEARCH DETAIL