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Phagocytic cell function in active brucellosis

P Ocon1, J M Reguera, P Morata

  • 1Unit of Immunology, Regional Hospital Carlos Haya, University of Málaga, Spain.

Infection and Immunity
|March 1, 1994
PubMed
Summary
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Brucellosis impairs phagocytic cell function, increasing adherence and nitroblue tetrazolium reduction while decreasing chemotaxis and phagocytosis. These immune cell changes normalize after treatment, showing a transient effect.

Area of Science:

  • Immunology
  • Infectious Diseases

Background:

  • Brucellosis is a zoonotic infection with significant public health implications.
  • Phagocytic cells play a crucial role in the immune response to bacterial infections like brucellosis.

Purpose of the Study:

  • To investigate phagocytic cell function in patients with active brucellosis.
  • To correlate these functions with clinical, serological, and evolutionary aspects of the disease.

Main Methods:

  • Analysis of phagocytic cell function (adherence, nitroblue tetrazolium reduction, chemotaxis, phagocytosis) in 51 brucellosis patients and 30 controls.
  • Assays performed at diagnosis, post-treatment, and 6-month follow-up.
  • Evaluation of Brucella antigen-specific responses.

Main Results:

Related Experiment Videos

  • Patients showed increased polymorphonuclear leukocyte adherence and nitroblue tetrazolium reduction.
  • Chemotaxis and phagocytosis were significantly reduced in patients compared to controls.
  • Impaired functions were more pronounced in patients with bacteremia, focal disease, or delayed diagnosis.

Conclusions:

  • Brucellosis significantly alters phagocytic cell function, with specific impairments observed.
  • These functional changes are linked to disease severity and progression.
  • Treatment leads to normalization of phagocytic cell function, suggesting a transient impact.