In vivo and in vitro evaluation of cell-mediated immunity in patients with paracoccidioidomycosis
Identifieur interne : 001F50 ( Main/Exploration ); précédent : 001F49; suivant : 001F51In vivo and in vitro evaluation of cell-mediated immunity in patients with paracoccidioidomycosis
Auteurs : Chloéc. Musatti [Brésil] ; Maria Thereza Rezkallah [Brésil] ; Ernesto Mendes [Brésil] ; Nelson F. Mendes [Brésil]Source :
- Cellular Immunology [ 0008-8749 ] ; 1975.
Abstract
The cellular immune response to specific and nonspecific agents was investigated. both in vivo and in vitro, in 19 patients with paracoceidioidomycosis. In addition, the immunologic study of an investigator aceidentally inoculated with P. brasiliensis was included in this study. Nearly half of the patients showed depressed cell-mediated immune responses, as evaluated by intradermal tests with an antigenic preparation from P. brasiliensis (P.b.Ag.), ubiquitous antigens, and by the ability to develop sensitization to 2,4-dinitrochlorobenzene. A similar proportion of impaired responses was observed when the patients' lymphocytes were cultured with phytohemagglutinin (PHA). C'. albicans antigen and P.h.Ag. A factor was detected in the plasma of some patients which reduced the ability of patients' and normal lymphocytes to undergo blastic transformation. A positive correlation was found between the ability to develop delayed cutaneous hypersensitivity reactions to P.b.Ag. and other ubiquitous antigens, normal in vitro responsiveness to PHA and the absence of humoral blastogenic inhibitory factor. The inhibition of leukocyte migration, but not lymphocyte transformation, correlated positively with delayed hypersensitivity. The percentage of T lymphocytes was significantly reduced in the group of patients, being the absolute number and percentage of B cells bearing receptors tor complement normal. Two polar immunological patterns emerged. One characterized by positiveness in the skin test to P.b.Ag. and lack of significant abnormalities in cellular immunity, and another anergic to P.b.Ag., with cell mediated immunity severely depressed. Between the two polar groups, there were patients with intermediary patterns of immune response. This paper also includes the results obtained with the administration of transfer factor and levamisole to some of the patients.
Url:
DOI: 10.1016/0008-8749(76)90220-3
Affiliations:
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In addition, the immunologic study of an investigator aceidentally inoculated with P. brasiliensis was included in this study. Nearly half of the patients showed depressed cell-mediated immune responses, as evaluated by intradermal tests with an antigenic preparation from P. brasiliensis (P.b.Ag.), ubiquitous antigens, and by the ability to develop sensitization to 2,4-dinitrochlorobenzene. A similar proportion of impaired responses was observed when the patients' lymphocytes were cultured with phytohemagglutinin (PHA). C'. albicans antigen and P.h.Ag. A factor was detected in the plasma of some patients which reduced the ability of patients' and normal lymphocytes to undergo blastic transformation. A positive correlation was found between the ability to develop delayed cutaneous hypersensitivity reactions to P.b.Ag. and other ubiquitous antigens, normal in vitro responsiveness to PHA and the absence of humoral blastogenic inhibitory factor. The inhibition of leukocyte migration, but not lymphocyte transformation, correlated positively with delayed hypersensitivity. The percentage of T lymphocytes was significantly reduced in the group of patients, being the absolute number and percentage of B cells bearing receptors tor complement normal. Two polar immunological patterns emerged. One characterized by positiveness in the skin test to P.b.Ag. and lack of significant abnormalities in cellular immunity, and another anergic to P.b.Ag., with cell mediated immunity severely depressed. Between the two polar groups, there were patients with intermediary patterns of immune response. This paper also includes the results obtained with the administration of transfer factor and levamisole to some of the patients.</div></front></TEI><affiliations><list><country><li>Brésil</li></country><region><li>État de São Paulo</li></region><settlement><li>São Paulo</li></settlement><orgName><li>Université de São Paulo</li></orgName></list><tree><country name="Brésil"><region name="État de São Paulo"><name sortKey="Musatti, Chloec" sort="Musatti, Chloec" uniqKey="Musatti C" first="Chloéc." last="Musatti">Chloéc. Musatti</name></region><name sortKey="Mendes, Ernesto" sort="Mendes, Ernesto" uniqKey="Mendes E" first="Ernesto" last="Mendes">Ernesto Mendes</name><name sortKey="Mendes, Nelson F" sort="Mendes, Nelson F" uniqKey="Mendes N" first="Nelson F." last="Mendes">Nelson F. Mendes</name><name sortKey="Rezkallah, Maria Thereza" sort="Rezkallah, Maria Thereza" uniqKey="Rezkallah M" first="Maria Thereza" last="Rezkallah">Maria Thereza Rezkallah</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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