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1.
Rev. cuba. pediatr ; 81(2)abr.-jun. 2009. tab
Article in Spanish | LILACS | ID: lil-576534

ABSTRACT

La meningitis se caracteriza por una marcada respuesta inflamatoria en el espacio subaracnoideo, que se acompaña de la producción intratecal de múltiples mediadores entre los que se hallan citocinas como el factor de necrosis tumoral alfa, la interleucina-1-beta y la interleucina-6. El objetivo del presente estudio fue estimar la concentración de interleucina-6 (IL-6) y proteína C-reactiva en el líquido cefalorraquídeo y el suero de pacientes con meningitis; determinar la posible relación entre estas concentraciones y la etiología de la meningitis; y precisar si existe asociación entre estas variables y la estadía hospitalaria. Se seleccionó una muestra de 18 pacientes con meningitis: 6 pacientes con diagnóstico de meningitis de etiología bacteriana y 12 pacientes con diagnóstico de meningitis aséptica. A ambos grupos se les realizó cuantificación de IL-6 y proteína C-reactiva en el líquido cefalorraquídeo (LCR) y el suero, además, citología y proteínas en LCR. Las concentraciones de IL-6 en el líquido cefalorraquídeo en la meningitis bacteriana resultaron superiores a las del suero de estos pacientes y a las del LCR y suero de pacientes con meningitis aséptica. La proteína C-reactiva alcanzó cifras superiores en el suero de la meningitis bacteriana. La concentración de IL-6 en líquido se correlacionó directamente con la estadía hospitalaria. La concentración de IL-6 en el líquido cefalorraquídeo y de la proteína C-reactiva en el suero puede contribuir a la precisión del diagnóstico diferencial entre meningitis aséptica y bacteriana. La concentración de IL-6 en el LCR permite valorar la envergadura del proceso inflamatorio que tiene lugar en el sistema nervioso central en la meningitis. La concentración de IL-6 selectivamente elevada en el LCR es un marcador de la compartimentalización de la respuesta inflamatoria y un potencial indicador del daño en el sistema nervioso central en la meningitis bacteriana.


Meningitis is characterized by a marked inflammatory response in subarachnoid space, accompanied by the intrathecal production of many mediators including cytokines as ß-tumor necrosis factor, â-interleukin-1 and interleukin-6. The aim of present paper was to estimate the concentration of interleukin-6 and C-reactive protein in the cerebrospinal fluid (CSF), and in serum from meningitis patients; to determine the possible relation among these concentrations, and meningitis etiology, and to set if there is an association among these variables and hospital stay. A sample of 18 patients presenting with meningitis was selected: 6 patients diagnosed with meningitis of bacterial origin and 12 patients diagnosed with aseptic meningitis. In both groups we quantified interleukin-6 and C-reactive protein in CSF and in serum, as well as cytology and proteins in CSF. Concentrations of interleukin-6 in CSF in bacterial meningitis were higher than those of serum from these patients, and than those of CSF and serum from aseptic meningitis patients. C-reactive protein reached figures higher in bacterial meningitis serum. Interleukin-6 concentration in CSF was directly correlated with hospital stay. Interleukin-6 in CSF and of C-reactive protein in serum may to contribute to the accuracy in differential diagnosis between aseptic meningitis and the bacterial one. Interleukin-6 concentration in CSF allows us to assess the significance of inflammatory process in the CNS in meningitis. The selectively high interleukin-6 concentration in CSF is a marker to compartmentalize the inflammatory response, and a potential damage indicator in CNS in bacterial meningitis.


Subject(s)
Humans , Infant, Newborn , Infant , Child, Preschool , Child , /analysis , /cerebrospinal fluid , Meningitis/etiology , C-Reactive Protein/analysis , C-Reactive Protein/cerebrospinal fluid , Cross-Sectional Studies , Epidemiology, Descriptive
2.
IJCN-Iranian Journal of Child Neurology. 2007; 1 (4): 37-46
in English | IMEMR | ID: emr-82669

ABSTRACT

Bacterial meningitis is still a life threatening epidemiological problem especially in many developing countries; considering its dire consequences, its prompt and accurate diagnosis has become a priority for clinicians. Because of the various limitations of conventionally used laboratory techniques, we evaluated and compared the diagnostic utility of C-reactive protein and lactate dehydrogenase in serum and cerebrospinal fluid in the diagnosis of bacterial meningitis and its effectivity in distinguishing it from aseptic meningitis. A total of 125 pediatric cases, aged between 1 month and 12 years, including patients with bacterial meningitis [n=45], aseptic meningitis [n=42] and a control group [n=38], were retrospectively analyzed on the basis of data from the initial clinical examinations. Cultures, smears and other common serum and CSF indices were compared with serum and CSF CRP levels and LDH activity. Compared with each of the other variables, there were significant differences in the mean values of serum-CRP, CSF-glucose, CSF-LDH and CSF/serum LDH ratio between the bacterial and aseptic meningitis groups [p<0.001]. Of all the tests applied, the highest sensitivity [95%] and negative predictive value [95%] belonged to CSF-LDH activity and the most specific [100%] test with the highest positive predictive value [100%] was CSF-CRP titration as well as smear and culture. Combination of CSF-CRP serum-CRP, and CSF-LDH yielded the highest sensitivity [100%] and negative predictive value but the combined application of CSF-LDH and CSF-CRP proved to be the most specific and efficient. In the presence of a normal CRP titration and low glucose level in CSF, bacterial meningitis is excluded, whereas elevated level of CSF-LDH activity is a valid confirmatory predictor of BM. In addition, combination of these three tests with serum CRP is far more effective than the separate determination of any of these parameters


Subject(s)
Humans , Meningitis/cerebrospinal fluid , Meningitis/blood , Meningitis/microbiology , Predictive Value of Tests , Sensitivity and Specificity , C-Reactive Protein/analysis , C-Reactive Protein/cerebrospinal fluid , L-Lactate Dehydrogenase/blood , L-Lactate Dehydrogenase/cerebrospinal fluid , Glucose/cerebrospinal fluid , Retrospective Studies
3.
Braz. j. infect. dis ; 3(1): 15-22, Feb. 1999. tab, ilus
Article in English | LILACS | ID: lil-243415

ABSTRACT

Twenty-two children with bacterial meningitis were prospectively studied to follow serum levels of C-reactive protein (CRP) at admission, and the 2nd, 5th and 7th days of treatment, and in the cerebrospinal fluid (CSF) at admission, to investigate whether there is any relationship of its levels with the clinical evolution. CRP was measured by latex agglutination and/or ELISA techniques with detection limits of 0.15mg/L and 0.9mg/L, respectively. Patients were classified according to clinical evolution in two groups: uneventful recovery (n=12) and complicated evolution (n=10). Clinical complications observed were: relapse of fever (8), persistent fever (4), arthritis (4), ventricle enlargement (2), subdural effusion (1), subdural empyema (1), ataxia (1), cervical hypotonia (1), deafness (1), endophthalmitis (1), accute otitis media (1), secondary skin infection (1) and treatment change due to poor clinical response (1). A significant decrease in CRP levels was observed among the uneventful recovery group after admission. In contrast, in the group with complicated evolution, CRP levels showed either secondary elevation or remained high continously. Mean serum CRP levels were significantly lower in the uneventful recovery group than in the complicated evolution group on the 5th and 7th days. CRP levels below 20mg/L on the 5th and 7th days were associated with an uneventful recovery, and CRP levels higher than 20mg/L on those same days were associated with a complicated clinical evolution (p=0.01* and p=0.0015*, respectively). We conclude that serumm CRP level monitoring in children with bacterial meningitis provides useful and objective information about their clinical evolution. This procedure is inexpensive and suitable for use in endemic areas lacking sophisticated laboratories.


Subject(s)
Humans , Child , Male , Female , Infant , Child, Preschool , Follow-Up Studies , Meningitis, Bacterial/cerebrospinal fluid , Meningitis, Bacterial/diagnosis , Meningitis/cerebrospinal fluid , Meningitis/complications , Meningitis/diagnosis , Neisseria meningitidis/isolation & purification , C-Reactive Protein/cerebrospinal fluid , Enzyme-Linked Immunosorbent Assay , Latex Fixation Tests , Prospective Studies
4.
Rev. cuba. pediatr ; 65(3): 154-8, sept.-dic. 1993. ilus, tab
Article in Spanish | LILACS | ID: lil-140844

ABSTRACT

Se comprueba la utilidad de la determinación de proteína C-reactiva en suero y líquido cefalorraquídeo durante un brote epidémico de meningoencefalitis. Se estudiaron 160 pacientes pediátricos con meningoencefalitis por Echo 4 y 76 por Neisseria meningitidis B. Se les cuantificó proteína C-reactiva y albúmina en suero y líquido cefalorraquídeo por inmunodifusión simple. Se encontraron diferencias significativas entre las concentraciones séricas de proteína C-reactiva de las meningoencefalitis bacterianas con los más altos niveles con respecto a las virales, con valores medios de 0,97 y 0,39 g/L respectivamente. En el líquido cefalorraquídeo la proteína C-reactiva dependió de las permeabilidad de la barrera hematoencefálica. No hubo variaciones en ambos líquidos biológicos con respecto a la edad. Las razones líquido cefalorraquídeo/suero de proteína C-reactiva poseen correlación significativa con la razón albúmina en la meningoencefalitis viral, no así en las bacterianas. Estas diferencias permiten que la proteína C-reactiva pueda ser utilizada para dar información etiológica auxiliar


Subject(s)
Humans , Albumins/analysis , Albumins/cerebrospinal fluid , Enterovirus B, Human , Meningoencephalitis/diagnosis , Neisseria meningitidis , C-Reactive Protein/analysis , C-Reactive Protein/cerebrospinal fluid , Meningoencephalitis/etiology
5.
Rev. chil. pediatr ; 58(2): 174-8, mar.-abr. 1987. tab
Article in Spanish | LILACS | ID: lil-48541

ABSTRACT

La PCR ha alcanzado en el último el rango de técnica rutinaria de aplicación clínica en muchos centros gracias al desarrollo de nuevos métodos, más rápidos y precisos que los descritos hasta antes de 1970. Es requisito esencial para su utilización eficaz, contar con un método cuantitativo rápido, como la turbidimetría o la nefelometría. Se ha reunido suficiente evidencia relativa a su efectividad en el diagnóstico y seguimiento de la infección neonatal, reconociendo sus limitaciones en cuanto a la precocidad y variabilidad según el agente infectante, pero asimismo pensamos que su alta especificidad y moderada sensibilidad la hacen superior a otros métodos de rastreo de infección utilizados hasta ahora. La PCR presenta su máxima utilidad con pacientes que sufren enfermedades febriles mal definidas, sugerentes de infección bacteriana, o condiciones que implican mayor riesgo de infecciones bacterianas sistémicas, por ejemplo inmunodepresión. La PCR no debe ser utilizada como único antibiótico, sino como elemento complemantario en la evaluación global del paciente


Subject(s)
Infant, Newborn , Humans , C-Reactive Protein/blood , Meningitis/diagnosis , Sepsis/diagnosis , Tuberculosis/diagnosis , C-Reactive Protein/cerebrospinal fluid , Meningitis/cerebrospinal fluid
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