title: The origin of proinflammatory cytokines in patients with idiopathic dilated cardiomyopathy.
abstract: Proinflammatory cytokines and their receptors are increased in the peripheral blood of patients with heart failure. We measured cytokines and their receptors in systemic artery (SA), coronary sinus (CS) and infra-renal inferior vena cava (IVC), in order to investigate their origin and influential factors. Thirty patients with idiopathic dilated cardiomyopathy were performed echocardiography at admission, and right heart catheterization after stabilization. Blood was drawn from 3 sites for measurement of tumor necrosis factor-alpha (TNF-alpha), interleukin-6 (IL-6) and soluble tumor necrosis factor-alpha receptor (sTNFR) I, II. TNF-alpha at CS (3.25 +/- 0.34 pg/mL) was higher than those of SA (1.81 +/- 0.39 pg/mL) and IVC (1.88 +/- 0.38 pg/mL, p<0.05). IL-6 at CS (18.3 +/- 3.8 pg/mL) was higher than that of SA (5.8 +/- 1.2 pg/mL, p<0.01). The levels of sTNFR I, II showed increasing tendency in sequence of SA, IVC and CS. TNF-alpha and sTNFR I, II from all sites were proportional to worsening of functional classes at admission (p<0.05). E/Ea by Doppler study at admission, which reflects left ventricular end-diastolic pressure (LVEDP) was positively correlated with TNF-alpha from SA (R=0.71, p<0.01), CS (R=0.52, p<0.05) and IVC (R=0.46, p<0.05). Thus, elevated LVEDP during decompensation might cause cytokine release from myocardium in patients with idiopathic dilated cardiomyopathy.
authors.affiliation: Department of Cardiology, Ajou University School of Medicine, Suwon, Korea.
authors.forename: Hyuk-Jae
authors.initials: HJ
authors.lastname: Chang
authors.forename: Jaehoon
authors.initials: J
authors.lastname: Chung
authors.forename: Byoung-Joo
authors.initials: BJ
authors.lastname: Choi
authors.forename: Tae-Young
authors.initials: TY
authors.lastname: Choi
authors.forename: So-Yeon
authors.initials: SY
authors.lastname: Choi
authors.forename: Myeong-Ho
authors.initials: MH
authors.lastname: Yoon
authors.forename: Gyo-Seung
authors.initials: GS
authors.lastname: Hwang
authors.forename: Joon-Han
authors.initials: JH
authors.lastname: Shin
authors.forename: Seung-Jea
authors.initials: SJ
authors.lastname: Tahk
authors.forename: Byung-Il William
authors.initials: BI
authors.lastname: Choi
mesh_terms: D000328:Adult; D000368:Aged; D002311:Cardiomyopathy, Dilated / Q000097:blood* / Q000276:immunology*; D005260:Female; D006321:Heart / Q000033:anatomy & histology; D006439:Hemodynamics; D006801:Humans; D015850:Interleukin-6 / Q000097:blood*; D008297:Male; D008875:Middle Aged; D018124:Receptors, Tumor Necrosis Factor / Q000097:blood*; D013223:Statistics as Topic; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism*
chemical_list: D015850:Interleukin-6; D018124:Receptors, Tumor Necrosis Factor; D014409:Tumor Necrosis Factor-alpha