title: Pericardial cytokines in neoplastic, autoreactive, and viral pericarditis.
abstract: Pericardial cytokine patterns in various diseases are not well established. We have analyzed pericardial proinflammatory (interleukin (IL)-6 and tumor necrosis factor (TNF)-alpha) and immunoregulatory cytokines (transforming growth factor (TGF)-beta1 and interferon (IFN)-gamma) in patients with pericarditis, myocarditis, and ischemic heart disease. Pericardial fluid was obtained in 30 subsequent patients undergoing pericardiocentesis (Group 1: 60 % males, 52.4 ± 14.2 years) and in 21 patients during aortocoronary bypass surgery (Group 2: 42.9 % males, age 67.2 ± 7.4 years). After clinical, laboratory, echocardiography examination, fiberoptic pericardioscopy (Storz-AF1101Bl, Germany) and pericardial/epicardial biopsy Group 1 was subdivided to 40 % neoplastic, 36.6 % autoreactive, 10 % iatrogenic, and 13.3 % viral pericarditis. Samples were promptly aliquoted, frozen, and stored at -70 °C. The cytokines were estimated using quantikine enzyme amplified-sensitivity immuno-assays (R&D Systems, USA) and the results compared between neoplastic, viral, iatrogenic, and autoreactive pericarditis and surgical groups. IL-6 was significantly increased in PE versus serum in all forms of pericarditis (except in autoreactive) and increased in comparison with pericardial fluid of surgical patients. TNF-alpha was increased only in PE of patients with viral pericarditis in comparison with Group 2. TGF-beta1 was strikingly lower in the PE than in the serum of all pericarditis patients. However, TGF-beta1 levels in PE were significantly higher in Group 1 than in Group 2, except in viral pericarditis. IFN-gamma levels did not significantly differ between PE and serum or in comparison with Group 2. The cytokine pattern "high TNF-alpha/low TGF-beta1" was found in viral pericarditis and low IL-6 in autoreactive PE. Different etiologies of pericardial inflammation did not influence the IFN-gamma levels. IL-6 pericardial to serum ratio was significantly higher in autoreactive PE than in viral and neoplastic forms. However, TNF-alpha and IFN-gamma pericardial to serum ratios were significantly higher in viral than in autoreactive and neoplastic PE.
authors.affiliation: Department of Cardiology, Belgrade University School of Medicine and Clinical Center of Serbia, Koste Todorovića 8, 11000, Belgrade, Serbia. arsen.ristic@med.bg.ac.rs
authors.forename: Arsen D
authors.initials: AD
authors.lastname: Ristić
authors.forename: Sabine
authors.initials: S
authors.lastname: Pankuweit
authors.forename: Ružica
authors.initials: R
authors.lastname: Maksimović
authors.forename: Rainer
authors.initials: R
authors.lastname: Moosdorf
authors.forename: Bernhard
authors.initials: B
authors.lastname: Maisch
mesh_terms: D000328:Adult; D000368:Aged; D001327:Autoimmune Diseases / Q000150:complications*; D005122:Exudates and Transudates / Q000378:metabolism; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007249:Inflammation / Q000378:metabolism; D007371:Interferon-gamma / Q000032:analysis / Q000378:metabolism; D015850:Interleukin-6 / Q000032:analysis / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000150:complications*; D010490:Pericardial Effusion / Q000175:diagnosis / Q000209:etiology / Q000378:metabolism; D020519:Pericardiocentesis / Q000379:methods; D010493:Pericarditis / Q000175:diagnosis / Q000209:etiology / Q000378:metabolism; D013223:Statistics as Topic; D053773:Transforming Growth Factor beta1 / Q000032:analysis / Q000378:metabolism; D014409:Tumor Necrosis Factor-alpha / Q000032:analysis / Q000378:metabolism; D014777:Virus Diseases / Q000150:complications*
chemical_list: D015850:Interleukin-6; D053773:Transforming Growth Factor beta1; D014409:Tumor Necrosis Factor-alpha; D007371:Interferon-gamma