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Toll-like receptor-mediated inflammation markers are strongly induced in heart tissue in patients with cardiac disease under both ischemic and non-ischemic conditions.

Artikel i vetenskaplig tidskrift
Författare Victoria Rotter Sopasakis
Joakim Sandstedt
Michaela Johansson
Annika Lundqvist
Göran Bergström
Anders Jeppsson
Lillemor Mattsson Hultén
Publicerad i International journal of cardiology
Volym 293
Sidor 238-247
ISSN 1874-1754
Publiceringsår 2019
Publicerad vid Wallenberglaboratoriet
Institutionen för biomedicin, avdelningen för klinisk kemi och transfusionsmedicin
Institutionen för medicin, avdelningen för molekylär och klinisk medicin
Sidor 238-247
Språk en
Länkar dx.doi.org/10.1016/j.ijcard.2019.06...
www.ncbi.nlm.nih.gov/entrez/query.f...
Ämnesord Toll-like receptors, Cardiovascular disease, Inflammation, Coronary artery bypass graft, Aortic valve replacement
Ämneskategorier Kardiovaskulär medicin

Sammanfattning

A sustained low grade inflammatory state is a recognized feature of various diseases, including cardiovascular disease. This state of chronic inflammation involves activation of Toll-like receptor (TLR) signaling. However, little is known regarding the genetic profile of TLR components in cardiac tissue from patients with cardiac disease.In this study we investigated the genetic profile of 84 TLR markers in a unique set of cardiac tissue from patients that had undergone either coronary artery bypass grafting (CABG) or aortic valve replacement (AVR). In addition, we compared the gene data from the cardiac tissue with the same gene profile in blood as well as circulating cytokines to elucidate possible targets in blood that could be used to estimate the inflammatory state of the heart in cardiac disease.We found a marked upregulation of TLR-induced inflammation in cardiac tissue from both patient groups compared to healthy controls. The inflammation appeared to be primarily mediated through TLR1, 3, 7, 8 and 10, resulting in a marked induction of mediators of the innate immune response. Furthermore, the gene expression data in combination with unbiased multivariate analysis suggested a difference in inflammatory response in ischemic cardiac tissue compared to non-ischemic cardiac tissue. Serum levels of IL-13 were significantly elevated in both CABG and AVR patients compared to controls, whereas other cytokines did not appear to coincide with cardiac TLR-induced inflammation.We propose that cardiac disease in humans may be mediated by local cardiac TLR signaling under both ischemic and non-ischemic conditions.

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