These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: [Effect of cytokines and fibroblasts on eosinophilic granulocyte survival in polyposis nasi].
    Author: Rudack C, Hauser U, Stoll W.
    Journal: Laryngorhinootologie; 1999 Jul; 78(7):378-81. PubMed ID: 10457519.
    Abstract:
    BACKGROUND: Eosinophilic infiltration is the most prominent histologic feature of nasal polyps. The effects of eosinophil-associated cytokines and fibroblast derived factors on survival of isolated eosinophils from blood of patients with nasal polyps were investigated. METHODS AND PATIENTS: Peripheral blood eosinophils of 9 patients with nasal polyps were incubated in 1. culture medium alone and in a medium containing, 2. IL-5 (10 pg/ml); 3. IL-3, IL-5, GM-CSF (10 pg/ml); 4. supernatants of fibroblasts cultured from polyps of the same 9 patients; and 5. supernatants of fibroblasts enriched with IL-5, -3, and GM-CSF. Viability of eosinophils was assessed by their ability to take up WST-1. RESULTS: The survival index (T50) of eosinophils cultured in different culture medium is listed as follows: 1. medium alone: 0.8 +/- 0.14 days (MV +/- SEM), 2. medium containing IL-5; 1.2 +/- 0.19 days, 3. medium containing IL-3, IL-5, and GM-CSF: 3.1 +/- 0.13 days, 4. fibroblast supernatants: 1.6 +/- 0.29 days, and in 5. fibroblast supernatants enriched with IL-3, IL-5 and GM-CSF: 2.2 +/- 0.21 days. CONCLUSION: IL-5, prolongs eosinophil survival in vitro, IL-3, IL-5 and GM-CSF revealed synergistic effects; survival of eosinophils was significantly prolonged in comparison to stimulation with IL-5 alone. Supernatants of fibroblasts also prolonged eosinophil survival. This effect is probably due to GM-CSF, which was found in high concentrations in fibroblast supernatants.
    [Abstract] [Full Text] [Related] [New Search]