Low number of peripheral blood B lymphocytes in patients with pulmonary tuberculosis

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The cellular immune response plays a critical role in the containment of persistent Mycobacterium tuberculosis infection; however, the immunological mechanisms that lead to its control are not completely identified. The goal of this study was to evaluate B (CD19+) and T (CD3+) peripheral blood lymphocyte profiles and T-cell subsets (CD4+ and CD8+) in patients with pulmonary tuberculosis (TB). Percentages (p = 0.02) and absolute numbers (p = 0.005) of B cells were significantly lower in patients with pulmonary TB than in healthy donors. In contrast, percentages (p = 0.12) and absolute numbers (p = 0.14) of T cells were similar in TB patients and healthy donors. No significant differences in percentages of CD4+ (p = 0.19) or CD8+ (p = 0.85) T cells between patients and healthy donors were observed. In summary, patients with pulmonary tuberculosis had a lower number of peripheral blood B lymphocytes than healthy controls.

Original languageEnglish
Pages (from-to)197-205
Number of pages9
JournalImmunological Investigations
Issue number3
StatePublished - 2010

Bibliographical note

Funding Information:
This work was supported by Universidad de Sonora. The authors thank “Lab-oratorio Ramos” for the use of their flow cytometry unit.


  • B lymphocytes
  • T lymphocytes
  • Tuberculosis


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