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2.
Medicina (B.Aires) ; 61(1): 76-8, 2001. ilus, tab
Article in Spanish | LILACS | ID: lil-286384

ABSTRACT

El objetivo de este trabajo fue determinar la presencia del gen RHD en células fetales obtenidas de líquido amniótico (LA) por PCR. Se estudiaron 65 muestras de LA, 11 de madres RhD-sensibilizadas con anti-D. Se confirmó el origen fetal del AND analizando un locus VNTR y 3 loci STR en las muestras de AND de LA y sangre materna. En las muestras no contaminadas (n=62) se realizó la genotipicación RHD utilizando una estrategia de PCR multiplex que permite la obtención de 3 productos de amplificación en los fenotipos RhD+ y sólo un fragmento de AND en los fenotipos RhD-. Se genotipificaron 54 fetos RhD+ ( de 8 madres RhD- sensibilizadas) y 8 feto RhD- ( 3 de madres RhD- sensibilizadas). La genotipificación del AND fetal permite diagnosticar con una única amniocentesis fetos en riesgo real de enfermedad hemolítica fetoneonatal (EHFN) y evitar la utilización de métodos invasivos en casos de fetos RhD-.


Subject(s)
Humans , Female , Pregnancy , Amniotic Fluid/immunology , Erythroblastosis, Fetal/diagnosis , Rh-Hr Blood-Group System/genetics , DNA/genetics , Electrophoresis, Agar Gel , Erythroblastosis, Fetal/genetics , Genetic Markers , Genotype , Polymerase Chain Reaction
3.
Egyptian Journal of Immunology [The]. 1999; 6 (1): 57-65
in English | IMEMR | ID: emr-135482

ABSTRACT

The study aimed at evaluating the role of IL-6 in infection induced premature rupture of membranes [PROM]. 75 pregnant women at labor were the subjects of the study. Group I, included 25 preterm PROM cases, gp II included 25 full term PROM cases and group III included 25 full term with intact membranes [controls]. Amniotic fluid was collected through caesarean section route of delivery. Bacterial culture, chlamydial LPS antigen, mycoplasma detection and IL-6 quantitation, all except mycoplasma revealed, significantly higher values among PROM cases compared to the controls. They revealed to be good diagnostic tools to assess the microbial state of amniotic fluid. IL-6 recorded a significant constant level of 1050 pg/ml among all preterm PROM cases regardless the bacterial results. We conclude that lL-6 determination could be a good predictor of infection induced PROM


Subject(s)
Humans , Female , Amniotic Fluid/immunology , Interleukin-6 , Infections
4.
Egyptian Journal of Immunology [The]. 1999; 6 (1): 67-74
in English | IMEMR | ID: emr-135483

ABSTRACT

The study was conducted upon 75 pregnant women delivering by caesarean section [CS] route. Group I [n=25] included preterm premature rupture of membranes [PROM] cases [20-37 wks of gestation], Group II [n=25] included full term PROM cases [38-42 wks], Group III [n=25] included the controls who were full term with intact membranes submitted to elective CS. Routine bacteriologic culture, chlamydial LPS and mycoplasmal detection and IL-1beta estimation of amniotic fluid samples revealed a significantly elevated IL-1beta values among preterm PROM cases with positive bacterial culture compared to negative culture cases. Also full term PROM cases revealed significantly elevated IL-1beta values among positive chlamydial amniotic fluid samples. To conclude IL-1beta could be a potential marker in infection induced PROM cases. Further studies arc warranted to clarify the role of IL-1beta receptor antagonist as a causal therapy in PROM cases


Subject(s)
Humans , Female , Amniotic Fluid/immunology , Interleukin-1 , Amniotic Fluid/microbiology
5.
Braz. j. med. biol. res ; 29(10): 1317-20, Oct. 1996. tab
Article in English | LILACS | ID: lil-186180

ABSTRACT

Different molecular configurations of human beta interferon were titrated with the standard reference antiserum of the National Institutes of Health (NIH) which had been prepared with natural beta fibroblast interferon in order to determine to what extent differences in these configurations would influence the neutralization of the antiviral action of interferon. Neutralization tests were carried out in Vero cells by diluting both interferon and antiserum. Encephalomyocarditis virus was employed as challenge virus. The neutralization titer was considered to have been reached when the effect of eight units of interferon was reduced to one. Two natural beta interferons prepared from fibroblasts and from amniotic membranes gave similar high titers. However, titers were reduced five-fold with recombinant interferons expressed in Escherichia coli, which do not contain carbohydrate, one with the natural sequence and a mutant with a single amino acid substitution (cysteine for serine). The NIH antiserum did not neutralize the effect of a protein fraction from amniotic membranes antigenically different from the human alpha, beta, or gamma interferons but having the biological activity of interferon. We conclude that the carbohydrate moieties of human beta interferons are essential for their recognition by the NIH antiserum and that antibodies specific for human recombinant beta interferon, which does not contain carbohydrate, are needed.


Subject(s)
Humans , Antigenic Variation/immunology , Interferon-beta/immunology , Amniotic Fluid/immunology , Fibroblasts/immunology
6.
Rev. colomb. obstet. ginecol ; 47(3): 175-9, jul.-sept. 1996. tab
Article in Spanish | LILACS | ID: lil-293397

ABSTRACT

OBJETIVO: Determinar la utilidad de la concentraciónde glucosa en líquido amniótico en pacientes con trabajo de parto pretermino, como factor predictivo de infección intraamniótica. MATERIAL Y METODOS: Se practicó amniocentesis a 56 gestantes con trabajo de parto pretérmino y membranas íntegras, enviándose muestra para Gram, cultivo y concentración de glucosa. Simultáneamente se obtuvieron muestras de líquido amniótico en 62 pacientes a quienes se les indicó amniocentesis por otras patologías y que sirvieron de grupo de control. Se correlacionaron los resultados con la presencia de parto pretérmino y/o evidencia clínica de corioamnionitis utilizando métodos estadisticos de Chi cuadrado y "t" test. CONCLUSION: La determinación de glucosa en líquido amniótico es una alternativa diagnóstica rápida y certera en la identificación de infección intraamniótica en pacientes con actividad uterina pretérmino(Truncado 2500 caracteres)


Subject(s)
Humans , Female , Pregnancy , Glucose , Amniotic Fluid/immunology , Amniotic Fluid/parasitology , Amniotic Fluid/virology
7.
Ginecol. obstet. Méx ; 62(5): 131-5, mayo 1994. tab
Article in Spanish | LILACS | ID: lil-198898

ABSTRACT

La presencia de oligohidramnios, evaluado por la técnica del acúmulo o pool mayor, en la RPM pretérmino se correlaciona fuertemente con infección materna y perinatal. El objetivo de este estudio es evaluar la utilidad del índice de volumen del líquido amniótico (ILA) en la predicción de infección materna y fetal-neonatal en pacientes con RPM antes de las 37 semanas. 30 pacientes con RPM fueron estudiadas prospectivamante. A todas se les realizó ILA a su ingreso y se les manejó conservadoramente. Ninguna recibió uteroinhibidores y solo se emplearon antibióticos después de pinzar el cordón. En ausencia de infección intrauterina se permitió corticoterapia. Los resultados del ILA se correlacionaron con infección materna (corioamniotis) y perinatal (posible sepsis neonatal o sepsis neonatal). 23 de las 30 (76.6 por ciento) pacientes tuvieron un ILA menor o igual a 5.0 cm. (oligohidramnios) y (30.4 por ciento) un índice mayor de 5.0 cm. El embarazo mástempranamente incluido fue de 26.5 semanas y el mayor de 34.4 semanas. Del total de pacientes, 14 (43.3 por ciento) tuvieron corioamnioitis y todas corresponden al grupo de ILA menor o igual a 5.0 cm. En el grupo con oligohidramniosis hubo 15 neonatos (65.2 por ciento) con infección neonatal (seis posible sepsis y nueve sepsis neonatal). Todos los neonatos con cultivos positivos también correspondieron al grupo con ILA disminuido la comparación entre los casos con oligohidramnios con infección y los que tuvieron ILA normal sin infección tuvo significancia estadística (p=0.01). El ILA por 4 cuadrantes tiene adecuado valor predictivo de infección en la RPM pretérmino (sensibilidad del 93 por ciento) y podría ser parte de la evaluación inicial en estos casos para la identificación de pacientes con riesgo de infección


Subject(s)
Humans , Female , Pregnancy , Adult , Amniotic Fluid/immunology , Oligohydramnios/complications
9.
Article in English | IMSEAR | ID: sea-24233

ABSTRACT

Amniotic fluid samples were tested for specific immunoglobulins against Candida albicans by indirect immunofluorescence. Nineteen of the 23 samples tested contained specific IgA while specific IgG antibodies were detected in only seven samples (P less than 0.01). None of the samples contained specific anticandidal IgM (P less than 0.001). These 23 samples and a further 30 amniotic fluid samples were tested for Candida mannan antigen by latex agglutination. Mannan was not detected in any of the samples tested. It is concluded that anticandidal IgA in amniotic fluid is naturally occurring.


Subject(s)
Amniotic Fluid/immunology , Antibodies, Fungal/analysis , Candida albicans/immunology , Female , Fluorescent Antibody Technique , Humans , Immunoglobulins/analysis , Pregnancy
10.
J. bras. ginecol ; 100(5/6): 107-9, maio-jun. 1990.
Article in Portuguese | LILACS | ID: lil-91018

ABSTRACT

Foram acompanhadas 38 gestantes sensibilizadas pelo fator Rh, com o intuito de correlacionar os resultados cardiotocográficos ao estudo espectrofotométrico do líquido amniótico, com base nos critérios de Liley. As cardiotocografias foram classificadas em reativo, hiporreativo e näo-reativo. Foi verificada uma sensibilidade de 80% para o método, com um valor preditivo positivo de 86,8% e preditivo negativo de 77,4%


Subject(s)
Pregnancy , Humans , Female , Cardiotocography , Rh Isoimmunization/prevention & control , Amniotic Fluid/immunology , Spectrophotometry , Blood Transfusion, Intrauterine , Pregnancy Complications, Hematologic
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