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[An in-vivo and in-vitro study of phagocyte migration in patients with AIDS]
D Pasotti1, A Mazzone, G Ricevuti
1Istituto Superiore di Sanità, Roma.
Abstract:
Polymorphonuclear leukocytes (PMN), are considered the first line of host defense. The PMN defects were related with an increase susceptibility to infections. We studied the neutrophil chemotactic function in 20 patients suffering from AIDS. The results of in vivo study demonstrated the decrease of chemotactic activity at 6 hour (p < 0.001) in the patients respect to control. The data of in vitro studies confirmed the granulocyte chemotactic defects, statistically significant, in the patients compared to the control subjects, when we used all chemotactic factors. These results showing the profound immune disturbances characteristic of the disease can favour infective susceptibility and complicate follow-up of AIDS.
Insights
Neutrophil chemotactic function is impaired in patients with Acquired Immunodeficiency Syndrome (AIDS), increasing infection susceptibility. This study confirms significant defects in polymorphonuclear leukocyte (PMN) activity in AIDS patients.
Area of Science:
- Immunology
- Infectious Diseases
- Hematology
Background:
- Polymorphonuclear leukocytes (PMNs) are crucial for host defense against infections.
- Defects in PMN function are linked to increased susceptibility to infections.
- Acquired Immunodeficiency Syndrome (AIDS) is characterized by profound immune disturbances.
Purpose of the Study:
- To investigate neutrophil chemotactic function in patients with AIDS.
- To determine if AIDS-related immune dysfunction affects granulocyte migration.
Main Methods:
- Evaluated neutrophil chemotactic activity in 20 AIDS patients compared to control subjects.
- Conducted both in vivo and in vitro studies assessing chemotactic factor response.
Main Results:
- In vivo studies showed significantly decreased chemotactic activity at 6 hours in AIDS patients (p < 0.001).
- In vitro studies confirmed statistically significant granulocyte chemotactic defects in AIDS patients across all tested chemotactic factors.
Conclusions:
- AIDS patients exhibit profound immune disturbances, specifically impaired neutrophil chemotaxis.
- These chemotactic defects contribute to increased susceptibility to infections in AIDS.
- The findings highlight the importance of assessing immune function in AIDS patient management.