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Biomedical subjects

Y Naparstek

Publications and source records attributed to Y Naparstek.

At least 91 records · Page 5Linked to original sources
PubMed1983

Lines of T lymphocytes induce or vaccinate against autoimmune arthritis.

The pathophysiology of autoimmune arthritis was studied by selecting and isolating lines of effector T lymphocytes from rats administered an arthritogenic dose of Mycobacterium tuberculosis in complete Freund's adjuvant to induce adjuvant arthritis. Irradiated rats were intravenously inoculated with a cell line characterized by proliferative reactivity to Mycobacterium tuberculosis and, to a lesser degree, to rat collagen type II. This produced arthritis in all the irradiated rats. Nonirradiated recipients failed to develop arthritis. However, such rats, and those recovering from cell-mediated arthritis, were resistant to subsequent attempts to induce adjuvant arthritis. Lines of T lymphocytes selected for responsiveness to other antigens had no effect. Therefore, a line of T lymphocytes responsive to bacteria or to collagen type II could either induce autoimmune arthritis or serve as an agent of vaccination against it.

Animals↗
PubMed1983

T lymphocyte lines producing or vaccinating against autoimmune encephalomyelitis (EAE). Functional activation induces peanut agglutinin receptors and accumulation in the brain and thymus of line cells.

We studied lines of rat T cells, specifically reactive against myelin basic protein (BP), that were functional in mediating autoimmune encephalomyelitis or in vaccinating rats against induction of active EAE. Herein we report that these functions depended on activation of the cells by incubation with BP or with a T cell mitogen prior to inoculation into recipient rats. Activation was accompanied by the exposure of membrane-binding sites specific for the lectin peanut agglutinin. Accumulation of activated line cells in the central nervous system and thymus gland was observed.

Animals↗
PubMed1981

Quinine alone versus quinine plus a pyrimethamine-sulfadoxine combination in the treatment of Plasmodium faliciparum cerebral malaria.

Fifty-two patients with severe chloroquine resistant Plasmodium falciparum malaria were treated in a randomized double blind study with either quinine and a single dose of pyrimethamine-sulfadoxine (Fansidar) or quinine alone. Although no statistically significant differences were observed, the 25 patients who received both drugs responded faster and had a more favorable outcome (no deaths) when compared to the 27 who received quinine alone (2 deaths).

Clinical Trials as Topic↗
PubMed1980

Second primary lung carcinoma.

Long-term survivors with bronchogenic carcinoma represent only a small fraction of the overall population affected with this disease. Therefore, the occurrence of a second primary lung carcinoma is a rare event and can be diagnosed either simultaneously, or, more frequently, sequentially. A review of the literature disclosed a median interval of five years between metachronous lesions with a range of 0 to 16 years. We thus consider it of interest to report a case in which 17 years had elapsed between the first tumor, successfully treated by a lobectomy, and the diagnosis of a second primary tumor located in the contralateral lung. The literature on second primary lung tumors is reviewed and the histopathological aspects, as well as the therapeutic implications, of this relatively rare condition are discussed.

Aged↗
PubMed1980

UGI bleeding in a nonalcoholic population with portal hypertension.

We examined 27 patients with portal hypertension admitted because of acute UGI bleeding endoscopically within 24 hours. We identified esophageal-gastric varices as the bleeding source in 22 patients, and found no acute mucosal lesions in any of them. In only four patients was chronic liver disease due to alcohol consumption. We therefore suggest that acute mucosal lesions as a cause of UGI bleeding in patients with portal hypertension are common only in those with alcoholic cirrhosis.

Acute Disease↗
PubMed1980

Hyperglobulinemic purpura in the course of multiple myeloma.

Secondary hyperglobulinemic purpura of Waldenström is characterized by polyclonal gammopathy associated mainly with autoimmune diseases. Its occurrence with multiple myeloma is very rare. We described a patient who developed characteristic lesions of hyperglobulinemic purpura in the course of IgA myeloma. Skin biopsy revealed deposition of IgA in the blood vessels.

Aged↗
PubMed1979

Angina pectoris with normal coronary arteries in Shy-Drager syndrome.

A patient with Shy-Drager syndrome who presented with severe angina pectoris is described. Special investigations of his autonomic nervous system showed sympathetic and parasympathetic dysfunction with supersensitive end-organ response. Sympathetic dysfunction manifested as labile hypertension, severe postural hypotension, and inadequate heart rate response to atropine and the Valsalva manoeuvre. These changes in blood pressure were accompanied by severe disabling angina pectoris. Selective coronary angiography showed normal coronary arteries. It is suggested that angina pectoris resulted from the inadequate circulatory response and is another clinical manifestation of the Shy-Drager syndrome.

Angina Pectoris↗
PubMed1979

Hyponatremia in myxedema: a suggested therapeutic approach.

Two patients with myxedema coma and extreme hyponatremia associated with the syndrome of inappropriate secretion of antidiuretic hormone are described. Both recovered following i.v. hypertonic saline, furosemide and thyroxine. A review of 22 cases from the literature suggests that this therapeutic approach could improve the poor prognosis in this condition.

Aged↗