Myocardial Accumulations of Reg3A, Reg3γ and Oncostatin M Are Associated with the Formation of Granulomata in Patients with Cardiac Sarcoidosis

Cardiac sarcoidosis (CS) is a poorly understood disease and is characterized by the focal accumulation of immune cells, thus leading to the formation of granulomata (GL). To identify the developmental principles of fatal GL, fluorescence microscopy and Western blot analysis of CS and control patient...

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Main Authors: Praveen Gajawada, Ayse Cetinkaya, Susanne von Gerlach, Natalia Kubin, Heiko Burger, Michael Näbauer, Carola Grinninger, Andreas Rolf, Markus Schönburg, Yeong-Hoon Choi, Thomas Kubin, Manfred Richter
Format: Article
Language:English
Published: MDPI AG 2021-04-01
Series:International Journal of Molecular Sciences
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Online Access:https://www.mdpi.com/1422-0067/22/8/4148
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author Praveen Gajawada
Ayse Cetinkaya
Susanne von Gerlach
Natalia Kubin
Heiko Burger
Michael Näbauer
Carola Grinninger
Andreas Rolf
Markus Schönburg
Yeong-Hoon Choi
Thomas Kubin
Manfred Richter
author_facet Praveen Gajawada
Ayse Cetinkaya
Susanne von Gerlach
Natalia Kubin
Heiko Burger
Michael Näbauer
Carola Grinninger
Andreas Rolf
Markus Schönburg
Yeong-Hoon Choi
Thomas Kubin
Manfred Richter
author_sort Praveen Gajawada
collection DOAJ
description Cardiac sarcoidosis (CS) is a poorly understood disease and is characterized by the focal accumulation of immune cells, thus leading to the formation of granulomata (GL). To identify the developmental principles of fatal GL, fluorescence microscopy and Western blot analysis of CS and control patients is presented here. CS is visualized macroscopically by positron emission tomography (PET)/ computed tomography (CT). A battery of antibodies is used to determine structural, cell cycle and inflammatory markers. GL consist of CD68<sup>+</sup>, CD163<sup>+</sup> and CD206<sup>+</sup> macrophages surrounded by T-cells within fibrotic areas. Cell cycle markers such as phospho-histone H3, phospho-Aurora and Ki67 were moderately present; however, the phosphorylated ERM (ezrin, radixin and moesin) and Erk1/2 proteins, strong expression of the myosin motor protein and the macrophage transcription factor PU.1 indicate highly active GL. Mild apoptosis is consistent with PI3 kinase and Akt activation. Massive amounts of the IL-1R antagonist reflect a mild activation of stress and inflammatory pathways in GL. High levels of oncostatin M and the Reg3A and Reg3γ chemokines are in accordance with macrophage accumulation in areas of remodeling cardiomyocytes. We conclude that the formation of GL occurs mainly through chemoattraction and less by proliferation of macrophages. Furthermore, activation of the oncostatin/Reg3 axis might help at first to wall-off substances but might initiate the chronic development of heart failure.
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spelling doaj.art-16de534d08fa4448ba55981d9f1515592023-11-21T15:55:52ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672021-04-01228414810.3390/ijms22084148Myocardial Accumulations of Reg3A, Reg3γ and Oncostatin M Are Associated with the Formation of Granulomata in Patients with Cardiac SarcoidosisPraveen Gajawada0Ayse Cetinkaya1Susanne von Gerlach2Natalia Kubin3Heiko Burger4Michael Näbauer5Carola Grinninger6Andreas Rolf7Markus Schönburg8Yeong-Hoon Choi9Thomas Kubin10Manfred Richter11Department of Cardiac Surgery, Kerckhoff Heart Center, Benekestr. 2-8, 61231 Bad Nauheim, GermanyDepartment of Cardiac Surgery, Kerckhoff Heart Center, Benekestr. 2-8, 61231 Bad Nauheim, GermanyUniversitätsklinikum Giessen und Marburg GmbH, Standort Marburg, Baldingerstr., 35033 Marburg, GermanyDepartment of Cardiac Surgery, Kerckhoff Heart Center, Benekestr. 2-8, 61231 Bad Nauheim, GermanyDepartment of Cardiac Surgery, Kerckhoff Heart Center, Benekestr. 2-8, 61231 Bad Nauheim, GermanyMedizinische Klinik und Poliklinik I, Klinikum der Universität München, Marchioninistr. 15, 81377 Munich, GermanyMedizinische Klinik und Poliklinik I, Klinikum der Universität München, Marchioninistr. 15, 81377 Munich, GermanyCampus Kerckhoff, Justus-Liebig-University Giessen, 61231 Bad Nauheim, GermanyDepartment of Cardiac Surgery, Kerckhoff Heart Center, Benekestr. 2-8, 61231 Bad Nauheim, GermanyDepartment of Cardiac Surgery, Kerckhoff Heart Center, Benekestr. 2-8, 61231 Bad Nauheim, GermanyDepartment of Cardiac Surgery, Kerckhoff Heart Center, Benekestr. 2-8, 61231 Bad Nauheim, GermanyDepartment of Cardiac Surgery, Kerckhoff Heart Center, Benekestr. 2-8, 61231 Bad Nauheim, GermanyCardiac sarcoidosis (CS) is a poorly understood disease and is characterized by the focal accumulation of immune cells, thus leading to the formation of granulomata (GL). To identify the developmental principles of fatal GL, fluorescence microscopy and Western blot analysis of CS and control patients is presented here. CS is visualized macroscopically by positron emission tomography (PET)/ computed tomography (CT). A battery of antibodies is used to determine structural, cell cycle and inflammatory markers. GL consist of CD68<sup>+</sup>, CD163<sup>+</sup> and CD206<sup>+</sup> macrophages surrounded by T-cells within fibrotic areas. Cell cycle markers such as phospho-histone H3, phospho-Aurora and Ki67 were moderately present; however, the phosphorylated ERM (ezrin, radixin and moesin) and Erk1/2 proteins, strong expression of the myosin motor protein and the macrophage transcription factor PU.1 indicate highly active GL. Mild apoptosis is consistent with PI3 kinase and Akt activation. Massive amounts of the IL-1R antagonist reflect a mild activation of stress and inflammatory pathways in GL. High levels of oncostatin M and the Reg3A and Reg3γ chemokines are in accordance with macrophage accumulation in areas of remodeling cardiomyocytes. We conclude that the formation of GL occurs mainly through chemoattraction and less by proliferation of macrophages. Furthermore, activation of the oncostatin/Reg3 axis might help at first to wall-off substances but might initiate the chronic development of heart failure.https://www.mdpi.com/1422-0067/22/8/4148chemokinechemoattractionmacrophageinflammationinterleukin-1 receptor antagonistcell signaling
spellingShingle Praveen Gajawada
Ayse Cetinkaya
Susanne von Gerlach
Natalia Kubin
Heiko Burger
Michael Näbauer
Carola Grinninger
Andreas Rolf
Markus Schönburg
Yeong-Hoon Choi
Thomas Kubin
Manfred Richter
Myocardial Accumulations of Reg3A, Reg3γ and Oncostatin M Are Associated with the Formation of Granulomata in Patients with Cardiac Sarcoidosis
International Journal of Molecular Sciences
chemokine
chemoattraction
macrophage
inflammation
interleukin-1 receptor antagonist
cell signaling
title Myocardial Accumulations of Reg3A, Reg3γ and Oncostatin M Are Associated with the Formation of Granulomata in Patients with Cardiac Sarcoidosis
title_full Myocardial Accumulations of Reg3A, Reg3γ and Oncostatin M Are Associated with the Formation of Granulomata in Patients with Cardiac Sarcoidosis
title_fullStr Myocardial Accumulations of Reg3A, Reg3γ and Oncostatin M Are Associated with the Formation of Granulomata in Patients with Cardiac Sarcoidosis
title_full_unstemmed Myocardial Accumulations of Reg3A, Reg3γ and Oncostatin M Are Associated with the Formation of Granulomata in Patients with Cardiac Sarcoidosis
title_short Myocardial Accumulations of Reg3A, Reg3γ and Oncostatin M Are Associated with the Formation of Granulomata in Patients with Cardiac Sarcoidosis
title_sort myocardial accumulations of reg3a reg3γ and oncostatin m are associated with the formation of granulomata in patients with cardiac sarcoidosis
topic chemokine
chemoattraction
macrophage
inflammation
interleukin-1 receptor antagonist
cell signaling
url https://www.mdpi.com/1422-0067/22/8/4148
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