PMID- 15994392 OWN - NLM STAT- MEDLINE DCOM- 20051018 LR - 20171116 IS - 0903-1936 (Print) IS - 0903-1936 (Linking) VI - 26 IP - 1 DP - 2005 Jul TI - Characterisation of natural killer cells and CD56+ T-cells in sarcoidosis patients. PG - 77-85 AB - The aim of the current study was to investigate the frequency, phenotype and functional activity of natural killer (NK) cells and CD56+ T-cells in the bronchoalveolar lavage fluid and peripheral blood of patients with pulmonary sarcoidosis when compared with healthy volunteers, using staining with a panel of monoclonal antibodies followed by flow cytometry. The results revealed that the majority of the lung NK cell subpopulation expressed CD56(bright). In contrast, there was a predominant CD56(dim) subset in the blood of both patients and healthy controls. Most lung NK cells expressed C-type lectin-like human leukocyte antigen (HLA)-E-specific inhibitory receptor (i.e. CD94/NKG2A), but only a few lung NK cells expressed killer cell immunoglobulin-like inhibitory receptors specific for HLA-A, -B or -C molecules. In addition, a significantly increased number of CD56+ T-cells were observed in the blood of patients when compared with controls. Upon in vitro stimulation, both lung NK and CD56+ T-cells produced considerable amounts of interferon-gamma and tumour necrosis factor-alpha. Thus, in the lungs of patients with pulmonary sarcoidosis, a distinct phenotype of natural killer cells with the capacity to produce cytokines and actively participate in the T-helper 1-like inflammatory response associated with sarcoidosis was identified. FAU - Katchar, K AU - Katchar K AD - Dept of Medicine, Division of Respiratory Medicine, Karolinska Hospital, Stockholm, Sweden. kkatchar@bidmc.harvard.edu FAU - Soderstrom, K AU - Soderstrom K FAU - Wahlstrom, J AU - Wahlstrom J FAU - Eklund, A AU - Eklund A FAU - Grunewald, J AU - Grunewald J LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Eur Respir J JT - The European respiratory journal JID - 8803460 RN - 0 (CD56 Antigen) RN - 0 (Inflammation Mediators) SB - IM CIN - Eur Respir J. 2006 Mar;27(3):654. PMID: 16507870 MH - Adult MH - Bronchoalveolar Lavage Fluid/*cytology MH - CD56 Antigen/analysis/genetics/*metabolism MH - Case-Control Studies MH - Cells, Cultured MH - Female MH - Flow Cytometry MH - Humans MH - Inflammation Mediators/analysis/*metabolism MH - Killer Cells, Natural/*metabolism MH - Lymphocyte Activation MH - Male MH - Middle Aged MH - Phenotype MH - Prognosis MH - Reference Values MH - Risk Assessment MH - Sarcoidosis, Pulmonary/*diagnosis/metabolism MH - Sensitivity and Specificity MH - Severity of Illness Index MH - T-Lymphocytes/metabolism EDAT- 2005/07/05 09:00 MHDA- 2005/10/19 09:00 CRDT- 2005/07/05 09:00 PHST- 2005/07/05 09:00 [pubmed] PHST- 2005/10/19 09:00 [medline] PHST- 2005/07/05 09:00 [entrez] AID - 26/1/77 [pii] AID - 10.1183/09031936.05.00030805 [doi] PST - ppublish SO - Eur Respir J. 2005 Jul;26(1):77-85. doi: 10.1183/09031936.05.00030805.