Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 39
Filtrar
Mais filtros










Intervalo de ano de publicação
1.
Lupus ; 24(8): 788-95, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25504653

RESUMO

OBJECTIVE: To examine the characteristics of patients who developed late onset systemic lupus erythematosus (SLE) in the GLADEL (Grupo Latino Americano de Estudio del Lupus) cohort of patients with SLE. METHODS: Patients with SLE of less than two years of disease duration, seen at 34 centers of nine Latin American countries, were included. Late-onset was defined as >50 years of age at time of first SLE-related symptom. Clinical and laboratory manifestations, activity index (SLEDAI), and damage index (SLICC/ACR- DI) were ascertained at time of entry and during the course (cumulative incidence). Features were compared between the two patient groups (<50 and ≥50) using descriptive statistics and hypothesis tests. Logistic regression was performed to examine the association of late-onset lupus, adjusting for other variables. RESULTS: Of the 1480 patients included, 102 patients (6.9 %) had late-onset SLE, 87% of which were female. Patients with late-onset SLE had a shorter follow-up (3.6 vs. 4.4 years, p < 0.002) and a longer time to diagnosis (10.1 vs. 5.8 months, p < 0.001) compared to the younger onset group. Malar rash, photosensitivity, and renal involvement were less prevalent while interstitial lung disease, pleural effusions, and sicca symptoms were more frequent in the older age group (p > 0.05). In multivariable analysis, late onset was independently associated with higher odds of ocular (OR = 3.66, 95% CI = 2.15-6.23), pulmonary (OR = 2.04, 95% CI = 1.01-4.11), and cardiovascular (OR = 1.76, 95% CI = 1.04-2.98) involvement and lower odds of cutaneous involvement (OR = 0.41, 95% CI = 0.21-0.80), number of cumulative SLE criteria (OR = 0.79, 95% CI = 0.64-0.97), use of cyclophosphamide (OR = 0.47, 95% CI = 0.24-0.95), and anti-RNP antibodies (OR = 0.43, 95% CI = 0.20-0.91). A Cox regression model revealed a higher risk of dying in older onset than the younger-onset SLE (OR = 2.61, 95% CI = 1.2-5.6). CONCLUSION: Late-onset SLE in Latin Americans had a distinct disease expression compared to the younger-onset group. The disease seems to be mild with lower cumulative SLE criteria, reduced renal/mucocutaneous involvements, and less use of cyclophosphamide. Nevertheless, these patients have a higher risk of death and of ocular, pulmonary, and cardiovascular involvements.


Assuntos
Ciclofosfamida/uso terapêutico , Imunossupressores/uso terapêutico , Lúpus Eritematoso Sistêmico/complicações , Lúpus Eritematoso Sistêmico/tratamento farmacológico , Lúpus Eritematoso Sistêmico/etnologia , Adolescente , Adulto , Idade de Início , Idoso , Feminino , Hispânico ou Latino , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Índice de Gravidade de Doença , Adulto Jovem
2.
Lupus ; 18(12): 1033-52, 2009 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-19762375

RESUMO

We have previously developed and validated a self-administered questionnaire, modelled after the Systemic Lupus International Collaborating Clinics Damage Index (SDI), the Lupus Damage Index Questionnaire (LDIQ), which may allow the ascertainment of this construct in systemic lupus erythematosus (SLE) patients followed in the community and thus expand observations made about damage. We have now translated, back-translated and adapted the LDIQ to Spanish, Portuguese and French and applied it to patients followed at academic and non-academic centres in North and South America, Portugal and Spain while their physicians scored the SDI. A total of 887 patients (659 Spanish-speaking, 140 Portuguese-speaking and 80 French-speaking patients) and 40 physicians participated. Overall, patients scored all LDIQ versions higher than their physicians (total score and all domains). Infrequent manifestations had less optimal clinimetric properties but overall agreement was more than 95% for the majority of items. Higher correlations were observed among the Spanish-speaking patients than the Portuguese-speaking and French-speaking patients; further adjustments may be needed before the Portuguese and French versions of the LDIQ are applied in community-based studies. The relationship between the LDIQ and other outcome parameters is currently being investigated in a different patient sample.


Assuntos
Idioma , Lúpus Eritematoso Sistêmico , Inquéritos e Questionários , Adulto , Feminino , Inquéritos Epidemiológicos , Humanos , Lúpus Eritematoso Sistêmico/patologia , Lúpus Eritematoso Sistêmico/fisiopatologia , América do Norte , Portugal , Reprodutibilidade dos Testes , Índice de Gravidade de Doença , América do Sul , Espanha , Inquéritos e Questionários/normas
4.
Medicina (B Aires) ; 50(1): 21-4, 1990.
Artigo em Espanhol | MEDLINE | ID: mdl-2149869

RESUMO

Erythrocytes from 42 systemic lupus erythematosus (SLE) patients and 80 healthy volunteers were tested for the immunoadherence (CR1) receptor reactivity, observed by hemagglutination (IAHA) when incubating erythrocytes and aggregated human gamma-globulin (AHGG)-complement in appropriate proportions. Reactivity was expressed as the highest two-fold dilution of AHGG (2n) that induced hemagglutination. Erythrocytes of 15 SLE patients (35.7%) showed reactivity compared with 70 normal controls (87.5%). Both groups showed a trimodal distribution of IAHA titers in accordance with the three phenotypic groups described by other authors. Of the healthy population 72.5% belong to the intermediate reactivity mode (2(6) to 2(8)) and 64.3% of the SLE patients to the low reactivity group (negative). There was no correlation between CR1 defective expression and conventional activity parameters. This erythrocyte receptor involved in the immunocomplex clearance process, which constitutes 95% of the circulating CR1, is another factor that contributes to the pathophysiology of the disease when it is defective.


Assuntos
Eritrócitos/imunologia , Lúpus Eritematoso Sistêmico/imunologia , Receptores de Complemento/análise , Feminino , Testes de Hemaglutinação , Humanos , Reação de Imunoaderência , Lúpus Eritematoso Sistêmico/sangue , Masculino , Receptores de Complemento/fisiologia , Receptores de Complemento 3b
5.
Medicina (B.Aires) ; 50(1): 21-4, 1990. ilus
Artigo em Espanhol | LILACS | ID: lil-86756

RESUMO

Se estudia la reactividad del receptor CR1 eritrocitario, por su capacidad de inmunoadherencia-hemoaglutinación (IAH) frente a distintas concentraciones de gamaglobulina humana agregada en presencia de suero fresco de cobayo como fuente de complemento, en glóbulos rojos de 80 voluntarios sanos y 42 pacientes con lupus eritematoso sistémico. Por este método se detecta reactividad del receptor CR1 en un 87,5% de la población sana versus un 35,7% de la población lúpica. Ambas poblaciones presentan una distribución trimodal de los títulos de IAHA. El 72,5% de la población sana se distribuye en el grupo de reactividad intermedia y 64,3% de la población lúpica en el de reactividad baja, en concordancia con otros autores que describen tres grupos fenotípicos. No se encuentra correlación entre la expresión defectuosa del CR1 y los parámetros convencionales de actividad. Este receptor eritrocitario comprometido en el procesamiento de inmunocomplejos, que constituye el 95% del CR1 circulante, es un factor más que contribuye a la fisiopatología de la enfermedad cuando su reactividad es defectuosa


Assuntos
Humanos , Masculino , Feminino , Complemento C3b/análise , Eritrócitos/imunologia , Lúpus Eritematoso Sistêmico/imunologia , Receptores de Complemento/análise , Testes de Aglutinação , Complemento C3b/fisiologia , Reação de Imunoaderência , Receptores de Complemento/fisiologia
6.
Medicina [B Aires] ; 50(1): 21-4, 1990.
Artigo em Espanhol | BINACIS | ID: bin-51710

RESUMO

Erythrocytes from 42 systemic lupus erythematosus (SLE) patients and 80 healthy volunteers were tested for the immunoadherence (CR1) receptor reactivity, observed by hemagglutination (IAHA) when incubating erythrocytes and aggregated human gamma-globulin (AHGG)-complement in appropriate proportions. Reactivity was expressed as the highest two-fold dilution of AHGG (2n) that induced hemagglutination. Erythrocytes of 15 SLE patients (35.7


) showed reactivity compared with 70 normal controls (87.5


). Both groups showed a trimodal distribution of IAHA titers in accordance with the three phenotypic groups described by other authors. Of the healthy population 72.5


belong to the intermediate reactivity mode (2(6) to 2(8)) and 64.3


of the SLE patients to the low reactivity group (negative). There was no correlation between CR1 defective expression and conventional activity parameters. This erythrocyte receptor involved in the immunocomplex clearance process, which constitutes 95


of the circulating CR1, is another factor that contributes to the pathophysiology of the disease when it is defective.

7.
Medicina [B.Aires] ; 50(1): 21-4, 1990. ilus
Artigo em Espanhol | BINACIS | ID: bin-28091

RESUMO

Se estudia la reactividad del receptor CR1 eritrocitario, por su capacidad de inmunoadherencia-hemoaglutinación (IAH) frente a distintas concentraciones de gamaglobulina humana agregada en presencia de suero fresco de cobayo como fuente de complemento, en glóbulos rojos de 80 voluntarios sanos y 42 pacientes con lupus eritematoso sistémico. Por este método se detecta reactividad del receptor CR1 en un 87,5% de la población sana versus un 35,7% de la población lúpica. Ambas poblaciones presentan una distribución trimodal de los títulos de IAHA. El 72,5% de la población sana se distribuye en el grupo de reactividad intermedia y 64,3% de la población lúpica en el de reactividad baja, en concordancia con otros autores que describen tres grupos fenotípicos. No se encuentra correlación entre la expresión defectuosa del CR1 y los parámetros convencionales de actividad. Este receptor eritrocitario comprometido en el procesamiento de inmunocomplejos, que constituye el 95% del CR1 circulante, es un factor más que contribuye a la fisiopatología de la enfermedad cuando su reactividad es defectuosa (AU)


Assuntos
Humanos , Masculino , Feminino , Lúpus Eritematoso Sistêmico/imunologia , Complemento C3b/análise , Receptores de Complemento/análise , Eritrócitos/imunologia , Reação de Imunoaderência , Testes de Aglutinação , Complemento C3b/fisiologia , Receptores de Complemento/fisiologia
8.
Medicina (B Aires) ; 49(2): 105-8, 1989.
Artigo em Espanhol | MEDLINE | ID: mdl-2640477

RESUMO

A subset of normal peripheral B lymphocytes expresses a T surface antigen recognized by monoclonal CD5. They form rosettes with mouse erythrocytes (MRBC). Other studies suggest that these B cells may have regulatory and helper properties. An expanded subset of lymphocytes forming MRBC was demonstrated in the peripheral blood of 31 Systemic Lupus Erythematosus (SLE) patients (14.4 +/- 2.8%) compared with normal controls (4.3 +/- 1.4%) and patients with tuberculosis (6.4 +/- 1.7%). Increased MRBC values correlated with disease severity. Investigation of cell surface antigen expression was attempted with enriched sedimented fractions using several monoclonal antibodies and immunofluorescent staining. Complete inhibition of MRBC formation was obtained with monoclonal antibodies against CD5, CD3 and CD8 while partial inhibition was observed with anti-Ia and no activity with CD4 and CD10 antibodies. Indirect evidence supports the concept that antilymphocyte antibodies cause T and B cell depletion and dysfunction. Sera from 12 patients with SLE and 28 with leprosy (LL) were analyzed for antibodies to lymphocytes in the microcytotoxicity assay: 87% of SLE and 57% of LL were positive. Lymphocytotoxic activity towards each cell type of a panel with 98 different HLA antigens was essentially the same and most sera were not specific for either T or B cells. Lymphocytotoxic sera from SLE and LL contained antibodies which inhibited MRBC formation.


Assuntos
Autoimunidade , Linfócitos B/fisiologia , Lúpus Eritematoso Sistêmico/imunologia , Anticorpos Monoclonais , Soro Antilinfocitário/análise , Humanos , Imunidade Celular , Contagem de Leucócitos , Formação de Roseta , Linfócitos T/fisiologia
9.
Medicina (B Aires) ; 49(2): 113-8, 1989.
Artigo em Espanhol | MEDLINE | ID: mdl-2640479

RESUMO

We studied the possible role of polymorphonuclear neutrophil (PMN) aggregation in Systemic Lupus Erythematosus (SLE) by the capacity of sera from 32 lupus patients to induce in vitro normal PMN aggregation. Neutrophil aggregating activity (NAA) in this group was significantly greater than that found in 8 inactive SLE patients and in 8 controls. In patients with SLE, there was a positive correlation between disease severity and the quantitative measure of NAA. High levels of NAA were particularly characteristic of central nervous system SLE. These data suggest that the formation of intravascular leukoaggregates may contribute to morbidity in SLE. Normal PMN increase their spontaneous superoxide anion production (0.21 nmol/min 10(7) PMN) when stimulated with sera from SLE patients. Lupus PMN also show an enhancement of 100% in superoxide production in vitro when stimulated with lupus sera. When N formyl methionine leucyl phenylalanine (FMLP) was used, lupus PMN showed an O2-production of 2.1 nmol/min 10(7) which is 5-fold the response of normal PMN stimulated by FMLP. Our results show the existence of seric factors in SLE patients that can stimulate O2-production by PMN. Lupus neutrophils show an increased response to membrane stimuli such as FMLP, capable of triggering the respiratory burst. Lupus neutrophils appear more responsive membrane stimuli such as FMLP, capable of triggering the respiratory burst. Lupus neutrophils appear more responsive to membrane stimuli. The seric and the cellular factors seem to indicate an increased rate of superoxide production by PMN in SLE patients, which can be relevant to vasculitis and tissue damage.


Assuntos
Lúpus Eritematoso Sistêmico/sangue , Neutrófilos/fisiologia , Adulto , Agregação Celular , Feminino , Humanos , Masculino , N-Formilmetionina Leucil-Fenilalanina/metabolismo , NADH NADPH Oxirredutases/metabolismo , NADPH Oxidases , Neutrófilos/metabolismo
10.
Medicina (B.Aires) ; 49(2): 105-8, 1989. tab
Artigo em Espanhol | LILACS | ID: lil-85314

RESUMO

Una pequeña proporción de linfocitos B presente en ganglios y sangre periférica humana tiene la propiedad de formar rosetas con eritrocitos de ratón (RR) y expresar en la superficie de su membrana un antígeno de 67 Kda perteneciente a la serie T (Pan T) que es reconocido por el monoclonal CD5. Se valoró en sangre periférica de pacientes con Lupus Eritematoso Sistémico (LES) la capacidad de formar RR. Treinta y un LES tenían un valor de 14,4 + o - 2,8% que fue comparado con controles normales: 4,3 + o - 1,4 (p<0,001) y pacientes con tuberculosis activa 6,4 + o - 1,7%. La expansión de esta subpoblación en el LES correlacionó con la severidad de la enfermedad. En experimentos de inhibición obteniéndose efecto parcial con la y ninguna actividad con CD4 y CD10. Hay evidencias que apoyan el concepto de que los anticuerpos antilinfocitarios producirían disfunción y depleción específica de subpoblaciones T y B linfocitarias. Los sueros de 12 pacientes con LES y de 28 con lepra lepromatosa (LL) fueron investigados para la presencia de estos anticuerpos con el método de microcitotoxicidad. La mayoría de los sueros con LES (87%) y un 57% de los LL fueron positivos en este ensayo. No hubo diferencias en la actividad cuando se los enfrentó con un panel de 98 diferentes antígenos HLA y tampoco hubo reactividad selectiva para linfocitos T o B. En un sistema de inhibición de RR, tanto los sueros de LES como los de LL, mostraron interferencia en la formación de rosetas, lo que sugiere la presencia de...


Assuntos
Humanos , Autoanticorpos , Doenças Autoimunes , Linfócitos B/análise , Lúpus Eritematoso Sistêmico/imunologia , Anticorpos Monoclonais , Imunidade Celular , Contagem de Leucócitos , Formação de Roseta , Soro Antilinfocitário/análise , Linfócitos T/análise
11.
Medicina (B.Aires) ; 49(2): 113-8, 1989. ilus
Artigo em Espanhol | LILACS | ID: lil-85316

RESUMO

Para estudiar el posible rol de la agregación de polimorfonucleares neutrófilos (PMNs) en el Lupus Eritematoso Sistémico (LES), se investigó la actividad agregante de neutrófilos (AAN) de sueros de 32 pacientes lúpicos. En 24 pacientes con LES en actividad se detectaron AAN con un valor medio significativamente mayor que el de los 8 restantes, no activos, y los controles. Particularmente, en 4 pacientes con compromiso del sistema nervioso central la característica fue el hallazgo de altos niveles de AAN. Esto sugiere que la formación intravascular de leucoagregados puede contribuir a la morbidad del LES. Los PMNs normales aumentan la producción de anión superóxido O2- cuando son estimulados con sueros lúpicos. Los PMNs de pacientes lúpicos muestran un aumento del 100% en la producción de 02- in vitro al ser estimulados con su propio suero. Cuando el estímulo es N formil metionil leucil fenilalanina FMLP los PMNs lúpicos producen 5 veces más superóxido que los normales. Factores séricos y celulares contribuyen a un aumento en la producción de O2- por PMNs lúpicos proporcionando las condiciones requeridas para el daño inmune tisular


Assuntos
Adulto , Humanos , Masculino , Feminino , Lúpus Eritematoso Sistêmico/sangue , Neutrófilos/fisiologia , Agregação Celular , NADH NADPH Oxirredutases/metabolismo , Receptores Imunológicos/metabolismo
12.
Medicina [B Aires] ; 49(2): 105-8, 1989.
Artigo em Espanhol | BINACIS | ID: bin-51891

RESUMO

A subset of normal peripheral B lymphocytes expresses a T surface antigen recognized by monoclonal CD5. They form rosettes with mouse erythrocytes (MRBC). Other studies suggest that these B cells may have regulatory and helper properties. An expanded subset of lymphocytes forming MRBC was demonstrated in the peripheral blood of 31 Systemic Lupus Erythematosus (SLE) patients (14.4 +/- 2.8


) compared with normal controls (4.3 +/- 1.4


) and patients with tuberculosis (6.4 +/- 1.7


). Increased MRBC values correlated with disease severity. Investigation of cell surface antigen expression was attempted with enriched sedimented fractions using several monoclonal antibodies and immunofluorescent staining. Complete inhibition of MRBC formation was obtained with monoclonal antibodies against CD5, CD3 and CD8 while partial inhibition was observed with anti-Ia and no activity with CD4 and CD10 antibodies. Indirect evidence supports the concept that antilymphocyte antibodies cause T and B cell depletion and dysfunction. Sera from 12 patients with SLE and 28 with leprosy (LL) were analyzed for antibodies to lymphocytes in the microcytotoxicity assay: 87


of SLE and 57


of LL were positive. Lymphocytotoxic activity towards each cell type of a panel with 98 different HLA antigens was essentially the same and most sera were not specific for either T or B cells. Lymphocytotoxic sera from SLE and LL contained antibodies which inhibited MRBC formation.

13.
Medicina [B Aires] ; 49(2): 113-8, 1989.
Artigo em Espanhol | BINACIS | ID: bin-51889

RESUMO

We studied the possible role of polymorphonuclear neutrophil (PMN) aggregation in Systemic Lupus Erythematosus (SLE) by the capacity of sera from 32 lupus patients to induce in vitro normal PMN aggregation. Neutrophil aggregating activity (NAA) in this group was significantly greater than that found in 8 inactive SLE patients and in 8 controls. In patients with SLE, there was a positive correlation between disease severity and the quantitative measure of NAA. High levels of NAA were particularly characteristic of central nervous system SLE. These data suggest that the formation of intravascular leukoaggregates may contribute to morbidity in SLE. Normal PMN increase their spontaneous superoxide anion production (0.21 nmol/min 10(7) PMN) when stimulated with sera from SLE patients. Lupus PMN also show an enhancement of 100


in superoxide production in vitro when stimulated with lupus sera. When N formyl methionine leucyl phenylalanine (FMLP) was used, lupus PMN showed an O2-production of 2.1 nmol/min 10(7) which is 5-fold the response of normal PMN stimulated by FMLP. Our results show the existence of seric factors in SLE patients that can stimulate O2-production by PMN. Lupus neutrophils show an increased response to membrane stimuli such as FMLP, capable of triggering the respiratory burst. Lupus neutrophils appear more responsive membrane stimuli such as FMLP, capable of triggering the respiratory burst. Lupus neutrophils appear more responsive to membrane stimuli. The seric and the cellular factors seem to indicate an increased rate of superoxide production by PMN in SLE patients, which can be relevant to vasculitis and tissue damage.

14.
Medicina [B.Aires] ; 49(2): 105-8, 1989. Tab
Artigo em Espanhol | BINACIS | ID: bin-28149

RESUMO

Una pequeña proporción de linfocitos B presente en ganglios y sangre periférica humana tiene la propiedad de formar rosetas con eritrocitos de ratón (RR) y expresar en la superficie de su membrana un antígeno de 67 Kda perteneciente a la serie T (Pan T) que es reconocido por el monoclonal CD5. Se valoró en sangre periférica de pacientes con Lupus Eritematoso Sistémico (LES) la capacidad de formar RR. Treinta y un LES tenían un valor de 14,4 + o - 2,8% que fue comparado con controles normales: 4,3 + o - 1,4 (p<0,001) y pacientes con tuberculosis activa 6,4 + o - 1,7%. La expansión de esta subpoblación en el LES correlacionó con la severidad de la enfermedad. En experimentos de inhibición obteniéndose efecto parcial con la y ninguna actividad con CD4 y CD10. Hay evidencias que apoyan el concepto de que los anticuerpos antilinfocitarios producirían disfunción y depleción específica de subpoblaciones T y B linfocitarias. Los sueros de 12 pacientes con LES y de 28 con lepra lepromatosa (LL) fueron investigados para la presencia de estos anticuerpos con el método de microcitotoxicidad. La mayoría de los sueros con LES (87%) y un 57% de los LL fueron positivos en este ensayo. No hubo diferencias en la actividad cuando se los enfrentó con un panel de 98 diferentes antígenos HLA y tampoco hubo reactividad selectiva para linfocitos T o B. En un sistema de inhibición de RR, tanto los sueros de LES como los de LL, mostraron interferencia en la formación de rosetas, lo que sugiere la presencia de... (AU)


Assuntos
Humanos , Lúpus Eritematoso Sistêmico/imunologia , Linfócitos B/análise , Doenças Autoimunes , Autoanticorpos , Imunidade Celular , Formação de Roseta , Linfócitos T/análise , Anticorpos Monoclonais/diagnóstico , Contagem de Leucócitos , Soro Antilinfocitário/análise
15.
Medicina [B.Aires] ; 49(2): 113-8, 1989. ilus
Artigo em Espanhol | BINACIS | ID: bin-28147

RESUMO

Para estudiar el posible rol de la agregación de polimorfonucleares neutrófilos (PMNs) en el Lupus Eritematoso Sistémico (LES), se investigó la actividad agregante de neutrófilos (AAN) de sueros de 32 pacientes lúpicos. En 24 pacientes con LES en actividad se detectaron AAN con un valor medio significativamente mayor que el de los 8 restantes, no activos, y los controles. Particularmente, en 4 pacientes con compromiso del sistema nervioso central la característica fue el hallazgo de altos niveles de AAN. Esto sugiere que la formación intravascular de leucoagregados puede contribuir a la morbidad del LES. Los PMNs normales aumentan la producción de anión superóxido O2- cuando son estimulados con sueros lúpicos. Los PMNs de pacientes lúpicos muestran un aumento del 100% en la producción de 02- in vitro al ser estimulados con su propio suero. Cuando el estímulo es N formil metionil leucil fenilalanina FMLP los PMNs lúpicos producen 5 veces más superóxido que los normales. Factores séricos y celulares contribuyen a un aumento en la producción de O2- por PMNs lúpicos proporcionando las condiciones requeridas para el daño inmune tisular (AU)


Assuntos
Adulto , Humanos , Masculino , Feminino , Lúpus Eritematoso Sistêmico/sangue , Neutrófilos/fisiologia , Agregação Celular , NADH NADPH Oxirredutases/metabolismo , Receptores Imunológicos/metabolismo
17.
Medicina [B.Aires] ; 48(2): 141-6, 1988. Tab
Artigo em Espanhol | BINACIS | ID: bin-29076

RESUMO

Una población de pacientes lúpidicos que se encontaban en distintos períodos de actividad y remisión fue evaluadas por parámetros convencionales de laboratorio y por la determinación de anticuerpos anti-ADN fijadores de complemento (anti-ADN FC) en virtud de su posible relación con el compromiso renal y actividad de la enfermedad. Los estudios convencionales de laboratorio confirmaron, como parámetro de elección para determinar el estado de actividad, el nivel de CH50, más aún existiendo compromiso renal. También se observó que los anticuerpos anti-ADN-hemaglutinantes permiten distinguir entre estados de actividad y remisión. Un menor valor discriminativo se adjudicaría a los niveles de complejos inmunes circulantes (CIC) y a los valores de vía alterna del complemento (VAC). Con respecto a los sueros anti-ADN FC positivos se encontró una relación con la actividad lúpica ni con el compromiso renal. Tampoco se observó que los sueros con bajo nivel de CH50 se relacionaran exclusivamente con la presencia de ati-ADN FC; parecería que algún otro mecanismo estaría involucrado en la patogenia de la nefritis lúpica (AU)


Assuntos
Adolescente , Adulto , Pessoa de Meia-Idade , Humanos , Masculino , Feminino , Nefrite Lúpica/imunologia , DNA/imunologia , Anticorpos Antinucleares/análise , Proteínas do Sistema Complemento/análise , Ativação do Complemento
18.
Medicina (B.Aires) ; 48(2): 141-6, 1988. tab
Artigo em Espanhol | LILACS | ID: lil-71601

RESUMO

Una población de pacientes lúpidicos que se encontaban en distintos períodos de actividad y remisión fue evaluadas por parámetros convencionales de laboratorio y por la determinación de anticuerpos anti-ADN fijadores de complemento (anti-ADN FC) en virtud de su posible relación con el compromiso renal y actividad de la enfermedad. Los estudios convencionales de laboratorio confirmaron, como parámetro de elección para determinar el estado de actividad, el nivel de CH50, más aún existiendo compromiso renal. También se observó que los anticuerpos anti-ADN-hemaglutinantes permiten distinguir entre estados de actividad y remisión. Un menor valor discriminativo se adjudicaría a los niveles de complejos inmunes circulantes (CIC) y a los valores de vía alterna del complemento (VAC). Con respecto a los sueros anti-ADN FC positivos se encontró una relación con la actividad lúpica ni con el compromiso renal. Tampoco se observó que los sueros con bajo nivel de CH50 se relacionaran exclusivamente con la presencia de ati-ADN FC; parecería que algún otro mecanismo estaría involucrado en la patogenia de la nefritis lúpica


Assuntos
Adolescente , Adulto , Pessoa de Meia-Idade , Humanos , Masculino , Feminino , Anticorpos Antinucleares/análise , Proteínas do Sistema Complemento/análise , DNA/imunologia , Nefrite Lúpica/imunologia , Ativação do Complemento
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...