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Biomedical subjects

N Lapointe

Publications and source records attributed to N Lapointe.

At least 73 records · Page 4Linked to original sources
PubMed1985

[Kawasaki's disease. Epidemiological aspects and cardiovascular manifestations. Apropos of 106 cases].

One hundred and six patients fulfilling accepted diagnostic criteria for Kawasaki disease (90 p. 100 of French-Canadian origin) were evaluated with serial electrocardiograms and echocardiograms (M mode and two-dimensional). Half of the patients (53) had cardiovascular manifestations at one time during their illness. Thirty-one had abnormal electrocardiograms: non specific ST and T wave changes inferiorly (27), prolonged QT intervals (6), first degree AV block (3). M mode echo was abnormal in 31 cases showing: slight pericardial effusion (17), flat septal movement (11), left ventricular dilatation (4), decrease of shortening fraction (2). Seven patients (6.4 p. 100) presented fusiform coronary aneurysm detected in 6 by two-dimensional echography (with angiographic confirmation) and at autopsy in another. M mode echo and electrocardiogram abnormalities were transient in the great majority of patients disappearing during an average follow-up period of 10 months. Coronary aneurysm had disappeared at the end of follow-up in two patients, regressed in three and remained identical in another. There were no relations between severity of clinical symptoms, electrocardiographic or echocardiographic (M mode) abnormalities and the development of coronary aneurysm. Serial studies with two-dimensional echo should be done in every patient with this disease for early detection and follow-up of coronary aneurysm.

Adolescent↗
PubMed1985

[Prospective study of 64 cases of Kawasaki's disease].

We prospectively studied 64 children with Kawasaki disease. The well recognized signs were seen, but we also found hyperemia of the tympanic membrane in 27%, uveitis in 17%, syndrome of inappropriate secretion of anti-diuretic hormone in 9%, hydrops of the gallbladder in 8%, pulmonary infiltrations in 5% and one death. One patient presented with acute kidney failure, another one presented with stenosis of the renal artery, and 8 presented white blood cells (WBC) in the urinary sediment. Sedimentation was accelerated and there was an important decrease in hemoglobin blood level around the 5th day of illness. The WBC count rose around the 10th day; thereafter, all these results returned to normal while platelets counts rose. Albumin blood level was low, and all the following data were higher than normal: alpha-1-globulin, alpha-2-globulin, IgA, IgM, SGOT, SGPT, bilirubin and CRP. Viral studies were performed in 37 patients; 12 showed positive results.

Blood Cell Count↗
PubMed1984

Giant cell pneumonia due to respiratory syncytial virus. Occurrence in severe combined immunodeficiency syndrome.

A 6-month-old male infant with a severe combined immunodeficiency syndrome was hospitalized for progressive respiratory distress. Examination during hospitalization disclosed widespread pulmonary infiltrates that did not respond to intensive therapy. The patient died eight days after admission. Autopsy disclosed Pneumocystis carinii pneumonia and widespread giant cell pneumonia. Respiratory syncytial virus (RSV) was grown from a lung specimen obtained at autopsy. Specific immunofluorescent staining of the cytoplasm of alveolar lining cells with RSV antiserum was demonstrated. The electron microscopic appearance of giant cells was compatible with RSV infection. The RSV should be added to the list of viruses causing giant cell pneumonia.

Humans↗
PubMed1982

Ocular manifestations of Kawasaki disease (mucocutaneous lymph node syndrome).

This paper describes nine patients, five girls and four boys aged 4 months to 7 years (mean 3 3/4 years), who had the clinical and laboratory features of Kawasaki disease (mucocutaneous lymph node syndrome). Eight of them had mild to moderate anterior uveitis, and one child showed choroidal, retinal and vitreous changes in one eye that caused a severe visual loss. Recognition of this disease is important, particularly since 1% to 2% of patients under 2 years of age die suddenly from coronary arteritis.

Child↗
PubMed1981

HLA-Bw35 and prognosis in adult Still's disease.

Twenty-five patients with adult Still's disease were studied to determine clinical course and possible HLA associations. Two types of disease evolution were distinguishable clinically: a self-limited remitting disease with or without recurrent cyclic exacerbations was found in 11 patients, and a persistent disease with continuous activity for more than 1 year, generally accompanied by progressive joint disease, was determined in 8. Disease course could not be classified in 6 patients. The antigen frequencies of HLA-Bw35 (40%, P less than 0.05) and Cw4 (44%, P less than 0.05) were increased in adult Still's disease as compared to controls (18% and 20%, respectively). Because HLA-Bw35 was associated with self-limited remitting type disease (P less than 0.02), this antigen may be a favorable prognostic marker in adult Still's disease.

Adolescent↗
PubMed1981

Neutrophil function in Bartter's syndrome.

Bartter's syndrome is a state associated with hyperprostaglandinemia and high urinary excretion of prostaglandin derivatives. Because of numerous reports on prostaglandins acting as local modulators of the immune system, we have studied parameters of phagocytic function and of cellular and humoral immunity in four patients with this disease. An augmentation in chemotaxis was identified in Bartter's syndrome neutrophils. Despite some minor deviations in other parameters measured, no other gross derangement in immune function could be identified.

Bartter Syndrome↗
PubMed1979

Subacute sclerosing panencephalitis associated glomerulopathy.

Subacute sclerosing panencephalitis (SSPE) is a progressive neurologic disease associated with chronic measles infection. We have assessed renal function parameters and renal biopsy details in 14 patients with SSPE. All had normal renal function. However, 9 had microscopic hematuria. 9 patients had focal segmental mesangial proliferation and 5 had capillary wall thickening with deposits visible by light microscopy. 13 patients had glomerular C3 deposition and 4 had IgG deposits. SSPE is a disease caused by chronic viral infection, in which nephritogenic complex formation may occur.

Chronic Disease↗
PubMed1975

Subacute sclerosing panencephalitis (SSPE).

Subacute sclerosing panencephalitis (SSPE) is a degenerative disease of the central nervous system occurring in children and adolescents. The measles virus, or a virus closely associated, plays an important role in the disease. SSPE appears years after these children have had the measles but still a measles-like virus can be found in their brain and in other organs. A certain deficit, still to be defined of the cell-mediated immunity as a chronic stimulation of the antibody response against the measles virus is documented in SSPE pointing to a possible immunologic imbalance in these patients. Studying the possibility of the presence of immune complexes in SSPE, immunofluorescent studies of kidney biopsy in SSPE patients have been performed. Complement deposits in the glomerular basement membrane have been found in most patients. The possible role of immune complexes in SSPE is still to be defined.

Antibody Formation↗