PMID- 24378597 OWN - NLM STAT- MEDLINE DCOM- 20150106 LR - 20180913 IS - 1536-4844 (Electronic) IS - 1078-0998 (Linking) VI - 20 IP - 2 DP - 2014 Feb TI - T-cell profiling and the immunodiagnosis of latent tuberculosis infection in patients with inflammatory bowel disease. PG - 329-38 LID - 10.1097/01.MIB.0000438429.38423.62 [doi] AB - BACKGROUND: Factors associated with performance of interferon-gamma release assays (IGRA) and the tuberculin skin test (TST) in screening for latent tuberculosis infection in patients with inflammatory bowel diseases (IBD) are still poorly understood. The influence of peripheral T-cell subset counts on the results also remain unclear. METHODS: Prospective single-center study in 205 patients with IBD. Latent tuberculosis infection screening included a chest radiograph, TST (retest if negative), and 2 IGRAs: QuantiFERON-TB Gold In-Tube (QFT-GIT) and TSPOT-TB (TSPOT). T-cell subpopulations were determined by flow cytometry. RESULTS: Twenty-one (10.2%) patients had an abnormal chest radiograph, 55 (26.8%) had a positive TST, 16 (7.8%) had a positive QFT-GIT, and 25 (12.6%) had a positive TSPOT. TST positivity was lower in patients on >/=2 immunosuppressants compared with the controls (5-aminosalicylic acid treatment) (10.4% versus 38.2%, respectively) (P = 0.0057). No other drugs influenced TST or IGRA positivity. In patients on corticosteroid treatment, anti-TNF treatment, or >/=2 immunosuppressants, IGRAs detected 10 cases of latent tuberculosis infection not identified by TST. TSPOT and QFT-GIT increased yield by 56% and 22%, respectively. No significant differences in T-cell subpopulations were found between patients with positive or negative TST or TSPOT results. However, patients with positive QFT-GIT findings had more CD8 T cells (mean, 883 +/- 576 versus 484 +/- 385 cells per microliter in patients with negative results) (P = 0.022). CONCLUSIONS: IGRAs can improve TST-based screening in patients with IBD on immunosuppressive therapy. A low CD8 count can affect QFT-GIT results. We suggest combining TSPOT and TST screening in patients with IBD on immunosuppressants. FAU - Arias-Guillen, Miguel AU - Arias-Guillen M AD - *Department of Respiratory Medicine, Instituto Nacional de Silicosis, Hospital Universitario Central de Asturias, Oviedo, Spain; daggerDepartment of Digestive Diseases, Hospital Universitario Central de Asturias, Oviedo, Spain; double daggerDepartment of Microbiology, Mycobacterial Reference Unit, Hospital Universitario Central de Asturias, Oviedo, Spain; section signDepartment of Respiratory Medicine, Hospital Arnau de Villanova, Valencia, Spain; ||Division of Pulmonary and Critical Care Medicine and Mayo Clinic Center for Tuberculosis, Mayo Clinic, Rochester, Minnesota; paragraph signDepartment of Radiology, Hospital Universitario Central de Asturias, Oviedo; and **Oficina de Investigacion Biosanitaria, Hospital Universitario Central de Asturias, Oviedo, Spain. FAU - Riestra, Sabino AU - Riestra S FAU - de Francisco, Ruth AU - de Francisco R FAU - Palacios, Juan Jose AU - Palacios JJ FAU - Belda, Jose AU - Belda J FAU - Escalante, Patricio AU - Escalante P FAU - Perez-Martinez, Isabel AU - Perez-Martinez I FAU - Molinos, Luis M AU - Molinos LM FAU - Garcia-Clemente, Marta AU - Garcia-Clemente M FAU - Pando-Sandoval, Ana AU - Pando-Sandoval A FAU - Rodrigo, Luis AU - Rodrigo L FAU - Prieto, Amador AU - Prieto A FAU - Martinez-Camblor, Pablo AU - Martinez-Camblor P FAU - Losada, Ana AU - Losada A FAU - Casan, Pere AU - Casan P LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Inflamm Bowel Dis JT - Inflammatory bowel diseases JID - 9508162 SB - IM MH - Adult MH - Diagnosis, Differential MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Follow-Up Studies MH - Humans MH - *Immunity, Innate MH - Immunologic Tests/methods MH - Incidence MH - Inflammatory Bowel Diseases/complications/epidemiology/*immunology MH - Latent Tuberculosis/complications/*diagnosis/epidemiology MH - Lymphocyte Count MH - Male MH - Mass Screening/*methods MH - Middle Aged MH - Prevalence MH - Prospective Studies MH - Risk Factors MH - Spain/epidemiology MH - T-Lymphocyte Subsets/*immunology EDAT- 2014/01/01 06:00 MHDA- 2015/01/07 06:00 CRDT- 2014/01/01 06:00 PHST- 2014/01/01 06:00 [entrez] PHST- 2014/01/01 06:00 [pubmed] PHST- 2015/01/07 06:00 [medline] AID - 10.1097/01.MIB.0000438429.38423.62 [doi] PST - ppublish SO - Inflamm Bowel Dis. 2014 Feb;20(2):329-38. doi: 10.1097/01.MIB.0000438429.38423.62.