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Mediators of Inflammation
Volume 2016, Article ID 7672048, 9 pages
http://dx.doi.org/10.1155/2016/7672048
Research Article

Serum Cytokines in Young Pediatric Patients with Congenital Cardiac Shunts and Altered Pulmonary Hemodynamics

1Heart Institute, University of São Paulo School of Medicine, São Paulo, SP, Brazil
2Pró-Sangue Foundation, São Paulo, SP, Brazil
3Stanford University School of Medicine, Stanford, CA, USA

Received 19 May 2016; Accepted 7 August 2016

Academic Editor: Dianne Cooper

Copyright © 2016 Leína Zorzanelli et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background and Objective. Inflammation is central in the pathogenesis of pulmonary hypertension. We investigated how serum cytokines correlate with clinical features, hemodynamics, and lung histology in young patients with pulmonary hypertension associated with congenital cardiac shunts. Design. Prospective, observational study. Methods and Results. Patients () were aged 2.6 to 37.6 months. Group I patients () were characterized by pulmonary congestion and higher pulmonary blood flow compared to group II (), with no need for preoperative cardiac catheterization. Group II patients () had no congestive features. At catheterization, they had elevated pulmonary vascular resistance (5.7 [4.4–7.4] Wood unitsm2, geometric mean with 95% CI). Cytokines were measured by chemiluminescence. Macrophage migration inhibitory factor (MIF) was found to be inversely related to pulmonary blood flow (, ) and was higher in group II (high pulmonary vascular resistance) compared to group I (high pulmonary blood flow) (). In contrast, RANTES chemokine (regulated on activation, normal T cell expressed and secreted) was characteristically elevated in Group I (). Interleukin 16 was also negatively related to pulmonary blood flow (, ) and was higher in patients with obstructive vasculopathy at intraoperative lung biopsy (). Conclusion. Cytokines seem to be important and differentially regulated in subpopulations of young patients with cardiac shunts.