Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 21
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
Acta Haematol ; 84(2): 101-3, 1990.
Artigo em Inglês | MEDLINE | ID: mdl-2120880

RESUMO

A hemophilia B patient, seropositive for HIV antibodies since 1984, came to us in March 1989 with a severe necrotizing lesion of the nose. It was an erythematous lesion and looked like rhinophyma. Microbiological examination of the skin biopsy showed the presence of Cryptococcus neoformans. At the time of the study, the patient was in partial remission after 2 weeks of therapy with fluconazole per os 400 mg/day. He will be treated with the same therapy at maintenance dose (200 mg/day) for a long period.


Assuntos
Síndrome da Imunodeficiência Adquirida/complicações , Criptococose/diagnóstico , Hemofilia B/complicações , Rinofima/diagnóstico , Criptococose/tratamento farmacológico , Criptococose/etiologia , Diagnóstico Diferencial , Fluconazol/uso terapêutico , Humanos , Masculino , Pessoa de Meia-Idade
2.
Eur J Pediatr ; 146(4): 394-7, 1987 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-3653136

RESUMO

IgM antibody to hepatitis B core antigen (anti-HBc IgM) was investigated by an antibody-capture radioimmunoassay (serum dilution 1:4000) in serum samples from 31 untreated children with chronic hepatitis B who were followed prospectively for 1-7 years. At the start, all patients were positive for hepatitis B e antigen (HBeAg), and anti-HBc IgM was detected in 23 cases, including 15 out of 16 with chronic active hepatitis and 7 out of 14 with chronic persistent hepatitis. A significant positive correlation was found between anti-HBc IgM levels and severity of liver damage (P less than 0.05), while an inverse relationship was found between anti-HBc IgM levels and distribution of hepatitis B core (HBcAg) antigen in the liver as detected by immunofluorescence. In fact 75% of anti-HBc IgM positive patients showed a focal HBcAg pattern (less than 40% positive nuclei), whereas 87% of antibody negative cases exhibited a diffuse HBcAg expression (more than 60% stained nuclei). During follow-up, seroconversion from HBeAg to anti-HBe with subsequent remission of liver disease occurred in 82% of patients presenting with detectable levels of anti-HBc, including three out of seven cases with chronic persistent hepatitis, but in none of the cases that were initially negative (P less than 0.01). These results indicate that during the natural course of chronic hepatitis B in children, anti-HBc IgM levels in serum reflect the degree of host immune response to infected hepatocytes. The close correlation between anti-HBc IgM seropositivity and seroconversion from HBeAg to anti-HBe suggests that anti HBc IgM may have a prognostic value during the follow-up of children with chronic HBeAg positive hepatitis B.


Assuntos
Anticorpos Anti-Hepatite B/análise , Antígenos do Núcleo do Vírus da Hepatite B/imunologia , Hepatite B/imunologia , Hepatite Crônica/imunologia , Imunoglobulina M/análise , Adolescente , Criança , Pré-Escolar , Feminino , Seguimentos , Antígenos E da Hepatite B/imunologia , Humanos , Lactente , Masculino
3.
Infection ; 14(6): 283-5, 1986.
Artigo em Inglês | MEDLINE | ID: mdl-3818106

RESUMO

During a seven-year survey of acute symptomatic viral hepatitis in Padua (Northern Italy), the epidemiological features of hepatitis A were evaluated in 207 consecutive patients (120 males, mean age 22.7 +/- 11.4 years). The annual attack rate of the disease decreased significantly (p less than 0.05) between 1978 and 1979 (0.11/1000 inhabitants) and 1981 and 1984 (0.04-0.03/1000 inhabitants), mainly due to its declining prevalence in the pediatric age. In parallel with the shifting of hepatitis A towards adulthood, single sources of infection, mainly associated with adult life-style such as foreign travel and raw shellfish ingestion, have become more and more prominent. The spread of drug abuse has not influenced the epidemiology of hepatitis A in our area.


Assuntos
Hepatite A/epidemiologia , Adolescente , Adulto , Fatores Etários , Criança , Pré-Escolar , Feminino , Humanos , Itália , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Fatores Sexuais
4.
Infection ; 14(2): 64-7, 1986.
Artigo em Inglês | MEDLINE | ID: mdl-3710594

RESUMO

During a prospective study of acute symptomatic viral hepatitis, started in 1978, 664 consecutive adult patients, including 223 drug abusers, fulfilled the diagnostic criteria (anti-HBc IgM positivity) for acute type B hepatitis. In order to evaluate the outcome of the disease, 443 patients were followed for up to 12 months after the onset. 2.4% of the infections became chronic; the rate did not significantly differ between drug addicts and non-drug abusers, suggesting that chronic hepatitis is a rare complication of acute symptomatic hepatitis type B. Ongoing liver damage after clearance of HBsAg from serum was observed in drug abusers only (14% of the cases). Clinical, biochemical and virological features of the acute phase in patients with ongoing infection were compared with those of uncomplicated cases. Anicteric hepatitis and lower transaminase values were significantly (p less than 0.05) associated to a chronic evolution of the disease, as well as a higher prevalence of HBV-DNA, DNA polymerase and HBcAg positivity in serum. Testing HBV-DNA and DNA polymerase early in the course of the infection appeared to be of high predictive value for the subsequent outcome of the illness.


Assuntos
Hepatite B/fisiopatologia , Doença Aguda , Adulto , Doença Crônica , DNA Viral/análise , DNA Polimerase Dirigida por DNA/análise , Feminino , Hepatite B/complicações , Hepatite B/enzimologia , Hepatite B/imunologia , Anticorpos Anti-Hepatite B/análise , Antígenos do Núcleo do Vírus da Hepatite B/análise , Antígenos de Superfície da Hepatite B/análise , Antígenos E da Hepatite B/análise , Vírus da Hepatite B/enzimologia , Vírus da Hepatite B/genética , Vírus da Hepatite B/imunologia , Hepatite D/epidemiologia , Humanos , Imunoglobulina M/análise , Masculino , Estudos Prospectivos , Transtornos Relacionados ao Uso de Substâncias/complicações , Transaminases/análise
6.
J Neurosurg Sci ; 28(1): 3-8, 1984.
Artigo em Inglês | MEDLINE | ID: mdl-6470799

RESUMO

A 6-year-old girl, operated upon for an optic nerve astrocytoma (resection limited to the intraorbital portion of the nerve), developed 3 years later symptoms and signs of chiasmatic invasion. Nine years after surgery (1980), she suffered from pneumococcal meningitis, due to cerebrospinal rhinorrhea that had been present in the last few years. A repeated neuroradiological investigation showed the site of the fistula and cerebral ventricles of normal size. The case is argued for bulb-to-chiasm resection of an optic nerve glioma: a spontaneous cerebrospinal rhinorrhea with its potential dangers of meningitis seems to be one more complication of a limited resection of these tumors. It is felt that this is an unusual instance of spontaneous rhinorrhea from direct tumoral erosion. The diagnostic value of metrizamide cisternography for the assessment of presence and site of the fistulous leak is confirmed.


Assuntos
Astrocitoma/cirurgia , Rinorreia de Líquido Cefalorraquidiano/diagnóstico por imagem , Neoplasias dos Nervos Cranianos/cirurgia , Meningite Pneumocócica/diagnóstico por imagem , Doenças do Nervo Óptico/cirurgia , Adolescente , Criança , Neoplasias dos Nervos Cranianos/diagnóstico por imagem , Feminino , Seguimentos , Humanos , Recidiva Local de Neoplasia/diagnóstico por imagem , Quiasma Óptico/diagnóstico por imagem , Doenças do Nervo Óptico/diagnóstico por imagem , Pneumoencefalografia , Complicações Pós-Operatórias/diagnóstico por imagem , Tomografia Computadorizada por Raios X
7.
Arch Dis Child ; 58(12): 993-6, 1983 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-6660899

RESUMO

Epidemiological and clinical features of acute symptomatic hepatitis type B were evaluated in 51 otherwise healthy children and in 13 children receiving immunosuppressive treatment for leukaemia and malignancy, who were admitted to hospital with acute hepatitis B surface antigen (HBsAg) positive hepatitis during a period of 7 years. Blood transfusions, or intimate contacts with asymptomatic HBsAg carriers or with contaminated material during repeated admission to hospital were the possible sources of infection in the immunosuppressed patients, whereas percutaneous exposure was identified as the source in a minority of non-immunosuppressed patients. Features of the acute phase of the illness differed little between the two groups of patients (acute liver failure developed in one patient with leukaemia and in two untreated children). Conversely, chronic evolution was observed in 69% of immunosuppressed patients but in only 9% of untreated children and affected only patients born to HBsAg positive mothers (two of four patients) or patients presenting with papular acrodermatitis (both patients).


Assuntos
Hepatite B/epidemiologia , Fatores Etários , Criança , Pré-Escolar , Feminino , Hepatite B/transmissão , Antígenos de Superfície da Hepatite B/análise , Humanos , Terapia de Imunossupressão/efeitos adversos , Lactente , Itália , Masculino , Troca Materno-Fetal , Neoplasias/terapia , Gravidez , Reação Transfusional
8.
J Pediatr ; 103(5): 718-22, 1983 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-6631598

RESUMO

The long-term changes in the HBeAg/anti-HBe system were examined in 55 children with chronic type B hepatitis (52 patients) or cirrhosis (three patients) during a follow-up period of two to 10 years. At the time of presentation, positive reactions to HBeAg were seen in 46 children, and to anti-HBe in nine. Spontaneous seroconversion from HBeAg to anti-HBe occurred in 13 of 38 patients (average annual rate 16%), mainly those with acute onset of hepatitis B or with features of active liver disease at presentation and with a focal distribution pattern of hepatitis B core antigen in the liver. Normalization of transaminase activity and disappearance of histologic features of activity were the rule in patients in whom seroconversion occurred, but the exception in those who maintained persistently HBeAg-positivity. In contrast to the favorable evolution of illness observed in children showing anti-HBe seroconversion, three of nine patients who had anti-HBe-positive reactions at presentation were found to have liver cirrhosis, and a fourth patient had features of active hepatitis throughout the observation period. Because delta antigen was detected in the liver in two of these patients, it is conceivable that etiologic cofactors could have influenced their course of chronic hepatitis.


Assuntos
Anticorpos Antivirais/análise , Antígenos da Hepatite B/análise , Antígenos E da Hepatite B/análise , Hepatite B/imunologia , Adolescente , Alanina Transaminase/metabolismo , Criança , Pré-Escolar , Doença Crônica , Feminino , Seguimentos , Hepatite B/tratamento farmacológico , Hepatite B/patologia , Vírus da Hepatite B/imunologia , Humanos , Imunossupressores/uso terapêutico , Lactente , Fígado/enzimologia , Masculino , Estudos Prospectivos
9.
Infection ; 10(5): 277-9, 1982.
Artigo em Inglês | MEDLINE | ID: mdl-6293974

RESUMO

The epidemiological features of acute symptomatic viral hepatitis were examined in 151 consecutive, hospitalized drug abusers. Hepatitis B was diagnosed in 101 patients (66.8%), hepatitis A in 13 (8.6%) and non-A, non-B hepatitis in 35 (23.1%). Non-A, non-B hepatitis was significantly more prevalent among drug abusers than in an age-matched control population of non-drug abusers. Moreover, the mean duration of parenteral drug abuse was significantly lower among non-A, non-B cases than in patients with hepatitis A or B. These results suggest a wide circulation of both hepatitis B virus and non-A, non-B agent(s) among drug abusers in our area. These patients most likely represent a main reservoir of non-A, non-B infection due to the high rate of chronicity reported for non-A, non-B hepatitis.


Assuntos
Hepatite Viral Humana/epidemiologia , Transtornos Relacionados ao Uso de Substâncias/complicações , Adolescente , Adulto , Infecções por Citomegalovirus/epidemiologia , Feminino , Hepatite A/epidemiologia , Hepatite B/epidemiologia , Hepatite C/epidemiologia , Hepatite Viral Humana/etiologia , Infecções por Herpesviridae/epidemiologia , Herpesvirus Humano 4 , Humanos , Masculino
11.
Gut ; 22(6): 499-504, 1981 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-7262628

RESUMO

Clinical, virological, and histological features of hepatitis B virus infection have been examined in 35 children, aged 1 to 11 years, known to be hepatitis B surface antigen (HBsAg) carriers for at least six months when entering the study. Only 10 patients had a history of acute unresolved hepatitis: in the remaining cases the detection of HBsAg had been an occasional finding. Although 77% of the patients were asymptomatic, all had evidence of hepatic involvement and liver history showed the features of chronic persistent hepatitis in 18 cases and of chronic active hepatitis in 16 cases, with associated cirrhosis in two of them. One patient had only minimal histological changes. A high percentage of children with both chronic persistent and chronic active hepatitis had evidence of active virus replication throughout the observation period. During the follow-up study of one to eight years (mean 3.1 +/- 1.7 years), transaminase levels became consistently normal in five patients with chronic persistent hepatitis, and inflammatory infiltrates disappeared in three of them. However, only one of these children cleared HBsAg from serum. Eleven of 16 patients with chronic active hepatitis received immunosuppressive treatment but only one of them achieved a complete and protracted remission, although active viral replication persisted. On the other hand, two of five untreated patients reached complete remission after two and three years of follow-up respectively and one of them cleared HBsAg three years later. These results would suggest the possibility of a spontaneous complete remission of HBsAg positive chronic active hepatitis in children but also raise doubts about the usefulness of immunosuppressive therapy in such patients.


Assuntos
Antígenos de Superfície da Hepatite B , Hepatite B/imunologia , Portador Sadio/imunologia , Portador Sadio/patologia , Criança , Pré-Escolar , Doença Crônica , Feminino , Seguimentos , Hepatite B/patologia , Humanos , Lactente , Fígado/patologia , Masculino
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...