Interleukin-6 inhibition in ST-elevation myocardial infarction: Immune cell profile in the randomised ASSAIL-MI trial.


Journal

EBioMedicine
ISSN: 2352-3964
Titre abrégé: EBioMedicine
Pays: Netherlands
ID NLM: 101647039

Informations de publication

Date de publication:
Jun 2022
Historique:
received: 07 12 2021
revised: 02 04 2022
accepted: 05 04 2022
pubmed: 4 5 2022
medline: 15 6 2022
entrez: 3 5 2022
Statut: ppublish

Résumé

We recently showed that interleukin (IL)-6 inhibition by tocilizumab improves myocardial salvage in ST-elevation myocardial infarction (STEMI). However, the mechanisms for this effect are not clear. In this exploratory sub-study of the ASSAIL-MI trial, we examined leukocyte differential counts and their relation to myocardial salvage and peak troponin T (TnT) in STEMI patients randomised to tocilizumab (n = 101) or placebo (n = 98). We performed RNA-sequencing on whole blood (n = 40) and T cells (n = 20). B and T cell subpopulations were examined by flow cytometry (n = 69). (i) STEMI patients had higher neutrophil counts at hospitalisation compared with stable angina patients. (ii) After percutaneous coronary intervention there was a gradual decline in neutrophils, which was significantly more pronounced in the tocilizumab group. (iii) The decrease in neutrophils in the tocilizumab group was associated with improved myocardial salvage and lower peak TnT. (iv) RNA-sequencing suggested that neutrophil function was also attenuated by tocilizumab. (v) B and T cell sub-populations changed only minimally after STEMI with minor effects of tocilizumab, supported as well by RNA-sequencing analyses of T cells. (vi) However, a low CD8 Tocilizumab induced a rapid reduction in neutrophils and seemed to attenuate neutrophil function in STEMI patients potentially related to the beneficial effects of tocilizumab on myocardial salvage. South-Eastern Norway Regional Health Authority (Nos. 2019067, 2017084), the Central Norway Regional Health Authority and Norwegian Research Council (No. 283867).

Sections du résumé

BACKGROUND BACKGROUND
We recently showed that interleukin (IL)-6 inhibition by tocilizumab improves myocardial salvage in ST-elevation myocardial infarction (STEMI). However, the mechanisms for this effect are not clear.
METHODS METHODS
In this exploratory sub-study of the ASSAIL-MI trial, we examined leukocyte differential counts and their relation to myocardial salvage and peak troponin T (TnT) in STEMI patients randomised to tocilizumab (n = 101) or placebo (n = 98). We performed RNA-sequencing on whole blood (n = 40) and T cells (n = 20). B and T cell subpopulations were examined by flow cytometry (n = 69).
FINDINGS RESULTS
(i) STEMI patients had higher neutrophil counts at hospitalisation compared with stable angina patients. (ii) After percutaneous coronary intervention there was a gradual decline in neutrophils, which was significantly more pronounced in the tocilizumab group. (iii) The decrease in neutrophils in the tocilizumab group was associated with improved myocardial salvage and lower peak TnT. (iv) RNA-sequencing suggested that neutrophil function was also attenuated by tocilizumab. (v) B and T cell sub-populations changed only minimally after STEMI with minor effects of tocilizumab, supported as well by RNA-sequencing analyses of T cells. (vi) However, a low CD8
INTERPRETATION CONCLUSIONS
Tocilizumab induced a rapid reduction in neutrophils and seemed to attenuate neutrophil function in STEMI patients potentially related to the beneficial effects of tocilizumab on myocardial salvage.
FUNDING BACKGROUND
South-Eastern Norway Regional Health Authority (Nos. 2019067, 2017084), the Central Norway Regional Health Authority and Norwegian Research Council (No. 283867).

Identifiants

pubmed: 35504178
pii: S2352-3964(22)00197-9
doi: 10.1016/j.ebiom.2022.104013
pmc: PMC9079006
pii:
doi:

Substances chimiques

Antibodies, Monoclonal, Humanized 0
Interleukin-6 0
RNA 63231-63-0
tocilizumab I031V2H011

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

104013

Informations de copyright

Copyright © 2022 The Authors. Published by Elsevier B.V. All rights reserved.

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Auteurs

Camilla Huse (C)

Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.

Anne Kristine Anstensrud (AK)

Department of Cardiology, Oslo University Hospital Rikshospitalet, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.

Annika E Michelsen (AE)

Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.

Thor Ueland (T)

Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway; K. G. Jebsen Thrombosis Research and Expertise Centre (TREC), The Arctic University of Norway, Tromsø, Norway.

Kaspar Broch (K)

Department of Cardiology, Oslo University Hospital Rikshospitalet, Oslo, Norway; K. G. Jebsen Cardiac Research Centre and Centre for Heart Failure Research, University of Oslo, Oslo, Norway.

Sindre Woxholt (S)

Clinic of Cardiology, St. Olav's Hospital, Trondheim University Hospital, Trondheim, Norway; Department of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.

Kuan Yang (K)

Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.

Kapil Sharma (K)

Department of Cardiology, Oslo University Hospital Ullevål, Oslo, Norway.

Ingvild Maria Tøllefsen (IM)

Department of Cardiology, Oslo University Hospital Ullevål, Oslo, Norway.

Bjørn Bendz (B)

Department of Cardiology, Oslo University Hospital Rikshospitalet, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.

Brage Høyem Amundsen (BH)

Clinic of Cardiology, St. Olav's Hospital, Trondheim University Hospital, Trondheim, Norway; Department of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.

Jan Kristian Damås (JK)

Department of Infectious Disease, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway; Department of Clinical and Molecular Medicine, Centre of Molecular Inflammation Research, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.

Erlend Sturle Berg (ES)

Department of Cardiology, Oslo University Hospital Rikshospitalet, Oslo, Norway.

Elisabeth Bjørkelund (E)

Department of Cardiology, Oslo University Hospital Rikshospitalet, Oslo, Norway.

Ana Quiles-Jiménez (A)

Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.

Vigdis Bjerkeli (V)

Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.

Christina Bendz (C)

Department of Cardiology, Oslo University Hospital Rikshospitalet, Oslo, Norway.

Ola Kleveland (O)

Clinic of Cardiology, St. Olav's Hospital, Trondheim University Hospital, Trondheim, Norway; Department of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.

Knut Haakon Stensaeth (KH)

Department of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), Trondheim, Norway; Department of Radiology and Nuclear Medicine, St. Olav's Hospital, Trondheim University Hospital, Trondheim, Norway.

Anders Opdahl (A)

Department of Cardiology, Oslo University Hospital Rikshospitalet, Oslo, Norway.

Nils-Einar Kløw (NE)

Department of Radiology, Oslo University Hospital Ullevål, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.

Geir Øystein Andersen (GØ)

Department of Cardiology, Oslo University Hospital Ullevål, Oslo, Norway; Department of Cardiology, Center for Clinical Heart Research, Oslo University Hospital Ullevål, Oslo, Norway.

Rune Wiseth (R)

Clinic of Cardiology, St. Olav's Hospital, Trondheim University Hospital, Trondheim, Norway; Department of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.

Bente Halvorsen (B)

Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.

Lars Gullestad (L)

Department of Cardiology, Oslo University Hospital Rikshospitalet, Oslo, Norway; K. G. Jebsen Cardiac Research Centre and Centre for Heart Failure Research, University of Oslo, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.

Ingebjørg Seljeflot (I)

Department of Cardiology, Oslo University Hospital Ullevål, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Department of Cardiology, Center for Clinical Heart Research, Oslo University Hospital Ullevål, Oslo, Norway.

Pål Aukrust (P)

Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Department of Rheumatology, Dermatology and Infectious Disease, Oslo University Hospital Rikshospitalet, Oslo, Norway.

Liv Osnes (L)

Department of Immunology, Oslo University Hospital Rikshospitalet, Oslo, Norway.

Tuva B Dahl (TB)

Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway; Department of Research and Development, Division of Emergencies and Critical Care, Oslo University Hospital, Norway. Electronic address: tuvad@medisin.uio.no.

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