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1995-03-25
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Document 0859
DOCN M9550859
TI [Pathogenetic mechanisms responsible for producing a secondary
immunodeficiency state]
DT 9505
AU Corti G; Paradisi F; Clinica Malattie Infettive, Universita di Firenze.
SO J Chemother. 1994 Aug;6 Suppl 3:6-10. Unique Identifier : AIDSLINE
MED/95165198
AB Abnormalities of the immune response can be secondary to old age, to
several pathologic conditions (i.e. diabetes mellitus, renal failure,
solid and lymphohematologic neoplasias, leukopenia, malnutrition,
autoimmune diseases, AIDS), to surgical stress or to burns, and to
immunosuppressive therapies, both medical (corticosteroids, cytotoxic
agents, antilymphocytic globulins) and surgical (splenectomy) as well as
radiant (extensive radiotherapy). Old age can affect both humoral
(reduced antibody synthesis) and cell-mediated (thymus involution,
diminished ratio Th/Ts, depression of both delayed hypersensitivity
reactions and cytotoxic activity of K cells) immune response.
Hyponutrition, often observed in the elderly, adds a reduced production
of secretory IgA, lysozyme and interferon, diminished complementary
activity, phagocytosis defects, and vitamin deficits. Furthermore, in
some chronic diseases we can observe reduced primary antibody response
or depression of delayed hypersensitivity reactions (renal failure,
neoplasias), changes in leukocyte functions (diabetes mellitus,
leukemias and lymphomas) and, in particular in solid neoplasias,
increased activity of Ts lymphocytes and the presence of circulating
immunocomplexes. Changes in phagocytosis, opsonization and chemotaxis
are typically seen in burns, whereas surgical stress can cause some
inhibition of cell-mediated immunity. Finally, after splenectomy it is
possible to observe an increased synthesis of IgA and IgG and, on the
contrary, reduced production of IgM and properdin.
DE Age Factors Aged Bacterial Infections/COMPLICATIONS English Abstract
Human Immunologic Deficiency Syndromes/*ETIOLOGY/IMMUNOLOGY
Immunosuppression/ADVERSE EFFECTS Infant, Newborn
Neoplasms/COMPLICATIONS Nutrition Disorders/COMPLICATIONS
Splenectomy/ADVERSE EFFECTS Virus Diseases/COMPLICATIONS Wounds and
Injuries/COMPLICATIONS JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).