Analysis of cytokine transcripts in the bronchoalveolar lavage cells of patients with asthma.

G. Krishnaswamy, M. C. Liu, S. N. Su, M. Kumai, H. Q. Xiao, D. G. Marsh, S. K. Huang

Research output: Contribution to journalArticle

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Abstract

A panel of steady-state cytokine mRNAs was analyzed in the bronchoalveolar lavage (BAL) cells from asthmatic subjects or patients challenged with ragweed allergen. This was achieved by combining both qualitative and quantitative assays using the reverse transcription-polymerase chain reaction (RT-PCR). Analysis of BAL cells from six mild allergic asthmatic and five nonasthmatic, nonallergic subjects showed no qualitative differences in the profile of cytokine mRNAs (including interleukin [IL]-1 beta, IL-2, IL-5, IL-6, IL-8, and granulocyte/macrophage colony-stimulating factor), except for tumor necrosis factor-alpha, which was detected in three out of six asthmatic BAL samples but in none of the controls. A key cytokine, IL-5, has been implicated in the pathogenesis of allergic inflammation through the recruitment of eosinophils. We found a significant enhancement of steady-state IL-5 transcripts in the BAL cells from allergen-challenged as compared with the saline-challenged control sites of four asthmatic patients; furthermore, the cellular source for IL-5 mRNA was identified in the mononuclear cell fraction, but not in the purified eosinophils, of the allergen-challenged BALs. These results suggest that the significant increase of IL-5 transcripts is primarily from the infiltrating mononuclear cells. Our study also demonstrates the power of qualitative and quantitative PCR analysis in determining the molecular basis of allergic inflammatory diseases.

Original languageEnglish
Pages (from-to)279-286
Number of pages8
JournalAmerican Journal of Respiratory Cell and Molecular Biology
Volume9
Issue number3
DOIs
Publication statusPublished - Jan 1 1993
Externally publishedYes

Fingerprint

Interleukin-5
Bronchoalveolar Lavage
Asthma
Cells
Cytokines
Allergens
Eosinophils
Messenger RNA
Ambrosia
Dimercaprol
Polymerase Chain Reaction
Polymerase chain reaction
Transcription
Granulocyte-Macrophage Colony-Stimulating Factor
Interleukin-8
Interleukin-1beta
Reverse Transcription
Interleukin-2
Interleukin-6
Assays

ASJC Scopus subject areas

  • Molecular Biology
  • Pulmonary and Respiratory Medicine
  • Clinical Biochemistry
  • Cell Biology

Cite this

Analysis of cytokine transcripts in the bronchoalveolar lavage cells of patients with asthma. / Krishnaswamy, G.; Liu, M. C.; Su, S. N.; Kumai, M.; Xiao, H. Q.; Marsh, D. G.; Huang, S. K.

In: American Journal of Respiratory Cell and Molecular Biology, Vol. 9, No. 3, 01.01.1993, p. 279-286.

Research output: Contribution to journalArticle

Krishnaswamy, G. ; Liu, M. C. ; Su, S. N. ; Kumai, M. ; Xiao, H. Q. ; Marsh, D. G. ; Huang, S. K. / Analysis of cytokine transcripts in the bronchoalveolar lavage cells of patients with asthma. In: American Journal of Respiratory Cell and Molecular Biology. 1993 ; Vol. 9, No. 3. pp. 279-286.
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