C Schneider1, J G Okun2, K V Schwarz2, J Hauke2, M Zorn3, C Nürnberg1, M Ungerer1, P A Ringleb1, S Mundiyanapurath1. 1. Department of Neurology, Heidelberg University Hospital, Heidelberg, Germany. 2. Dietmar-Hopp Metabolic Center, Center for Child and Adolescent Medicine, University Hospital, Heidelberg, Germany. 3. Central Laboratory, Department of Internal Medicine, University Hospital, Heidelberg, Germany.
Abstract
BACKGROUND AND PURPOSE: Trimethylamine-N-oxide (TMAO) is a biomarker of the gut microbiome and correlates with the risk of cardiovascular diseases. However, conflicting data exist on the specific role of TMAO in ischaemic stroke patients. We aimed to analyze the time course of TMAO levels in stroke patients compared with controls. METHODS: In this prospective, case-control study, patients suffering from ischaemic stroke (onset <24 h) and control patients with less than two cardiovascular risk factors were enrolled. Plasma TMAO levels were analyzed on admission, after 48 h and after 3 months. The primary endpoint was the difference in TMAO levels on admission between stroke patients and controls. RESULTS: A total of 196 patients with ischaemic stroke and 100 controls were included between February 2018 and April 2019. Plasma TMAO levels on admission were significantly higher in stroke patients than in controls [median value 4.09 (2.87-6.49) vs. 3.16 (2.08-5.16) µmol/L, P = 0.001]. There was a significant decrease in TMAO levels in stroke patients after 48 h [median at 48 h, 3.49 (2.30-5.39) µmol/L, P = 0.027]. TMAO levels increased again 3 months after stroke [median 4.23 (2.92-8.13) µmol/L, P = 0.047]. In controls, TMAO levels did not change between admission and after 48 h [median at 48 h, 3.14 (1.63-4.61) µmol/L, P = 0.11]. An inverse correlation between TMAO values and kidney function was found (Spearman rho -0.334, P < 0.001). CONCLUSIONS: Our study emphasizes the importance of the time course of TMAO levels after ischaemic stroke. Future studies should define the time point of TMAO analysis, preferably in the acute phase (<24 h).
BACKGROUND AND PURPOSE: Trimethylamine-N-oxide (TMAO) is a biomarker of the gut microbiome and correlates with the risk of cardiovascular diseases. However, conflicting data exist on the specific role of TMAO in ischaemic strokepatients. We aimed to analyze the time course of TMAO levels in strokepatients compared with controls. METHODS: In this prospective, case-control study, patients suffering from ischaemic stroke (onset <24 h) and control patients with less than two cardiovascular risk factors were enrolled. Plasma TMAO levels were analyzed on admission, after 48 h and after 3 months. The primary endpoint was the difference in TMAO levels on admission between strokepatients and controls. RESULTS: A total of 196 patients with ischaemic stroke and 100 controls were included between February 2018 and April 2019. Plasma TMAO levels on admission were significantly higher in strokepatients than in controls [median value 4.09 (2.87-6.49) vs. 3.16 (2.08-5.16) µmol/L, P = 0.001]. There was a significant decrease in TMAO levels in strokepatients after 48 h [median at 48 h, 3.49 (2.30-5.39) µmol/L, P = 0.027]. TMAO levels increased again 3 months after stroke [median 4.23 (2.92-8.13) µmol/L, P = 0.047]. In controls, TMAO levels did not change between admission and after 48 h [median at 48 h, 3.14 (1.63-4.61) µmol/L, P = 0.11]. An inverse correlation between TMAO values and kidney function was found (Spearman rho -0.334, P < 0.001). CONCLUSIONS: Our study emphasizes the importance of the time course of TMAO levels after ischaemic stroke. Future studies should define the time point of TMAO analysis, preferably in the acute phase (<24 h).
Authors: Petra Büttner; Jürgen G Okun; Jana Hauke; Erik Holzwirth; Danilo Obradovic; Gerhard Hindricks; Holger Thiele; Jelena Kornej Journal: Int J Cardiol Heart Vasc Date: 2020-06-11
Authors: Miriam Heyse; Christine Schneider; Peter Monostori; Kathrin V Schwarz; Jana Hauke; Katharina Drüschler; Anne Berberich; Markus Zorn; Peter A Ringleb; Jürgen G Okun; Sibu Mundiyanapurath Journal: Front Neurol Date: 2021-03-19 Impact factor: 4.003
Authors: Weifei Zhu; Kymberleigh A Romano; Lin Li; Jennifer A Buffa; Naseer Sangwan; Prem Prakash; Aaron N Tittle; Xinmin S Li; Xiaoming Fu; Charlie Androjna; Anthony J DiDonato; Kimberly Brinson; Bruce D Trapp; Michael A Fischbach; Federico E Rey; Adeline M Hajjar; Joseph A DiDonato; Stanley L Hazen Journal: Cell Host Microbe Date: 2021-06-16 Impact factor: 31.316
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