PMID- 35699588 OWN - NLM STAT- MEDLINE DCOM- 20221027 LR - 20221027 IS - 1899-5276 (Print) IS - 1899-5276 (Linking) VI - 31 IP - 10 DP - 2022 Oct TI - Citrulline and long-term mortality in patients with cardiovascular disease. PG - 1121-1128 LID - 10.17219/acem/150475 [doi] AB - BACKGROUND: Cardiovascular disease (CVD) is associated with intestinal barrier dysfunction and increased intestinal permeability. Increased intestinal permeability to gut microbial metabolites may accelerate the progression of CVD. Plasma citrulline levels are a marker of functional enterocyte mass, and reduced citrulline levels indicate intestinal epithelial damage. Citrulline was reported as a useful prognostic marker in critically ill patients. However, data are lacking on the association of citrulline with long-term mortality in patients with CVD and with the levels of trimethylamine N-oxide (TMAO), a microbiota-derived metabolite which has been implicated in the pathogenesis of CVD. OBJECTIVES: To assess the effect of citrulline levels, a marker of intestinal barrier disruption, on long-term mortality in patients with CVD. Moreover, the relationship between the concentrations of 2 biomarkers - citrulline and TMAO - was assessed. MATERIAL AND METHODS: Serum citrulline levels were retrospectively assessed in 1036 consecutive patients with CVD (median age: 62 years; 61% men) hospitalized between 2013 and 2015. Associations of citrulline levels with 5-year mortality rates as well as anthropometric and biochemical parameters were evaluated for the entire study group and in subgroups of patients with acute coronary syndrome (ACS), chronic coronary syndrome, chronic heart failure (chronic HF), and atrial fibrillation (AF). Correlations between serum citrulline and TMAO levels were assessed. RESULTS: The median citrulline level in the study population was 22.5 muM (interquartile range (IQR): 17.8-27.9). Citrulline levels were not associated with 5-year mortality in patients with CVD (hazard ratio (HR) = 0.99; 95% confidence interval (95% CI): 0.97-1.00; p = 0.49). Median citrulline levels differed significantly between deceased patients and survivors at 5 years in patients with ACS (p = 0.025). There were no significant correlations between citrulline and TMAO levels (Kendall's tau = 0.027). CONCLUSIONS: Decreasing citrulline levels do not predict long-term mortality of hospitalized patients with CVD. Moreover, they are not associated with the serum levels of TMAO in these patients. FAU - Konieczny, Radoslaw Andrzej AU - Konieczny RA AD - Jan Mikulicz-Radecki University Teaching Hospital, Clinic of Gastroenterology and Hepatology, Wroclaw, Poland. FAU - Zurawska-Plaksej, Ewa AU - Zurawska-Plaksej E AD - Department of Toxicology, Wroclaw Medical University, Poland. FAU - Kaaz, Konrad AU - Kaaz K AD - Institute of Heart Diseases, Wroclaw Medical University, Poland. FAU - Czapor-Irzabek, Hanna AU - Czapor-Irzabek H AD - Laboratory of Elemental Analysis and Structural Research, Wroclaw Medical University, Poland. FAU - Bombala, Wojciech AU - Bombala W AD - Statistical Analysis Centre, Wroclaw Medical University, Poland. FAU - Mysiak, Andrzej AU - Mysiak A AD - Institute of Heart Diseases, Wroclaw Medical University, Poland. FAU - Kuliczkowski, Wiktor AU - Kuliczkowski W AD - Institute of Heart Diseases, Wroclaw Medical University, Poland. LA - eng PT - Journal Article PL - Poland TA - Adv Clin Exp Med JT - Advances in clinical and experimental medicine : official organ Wroclaw Medical University JID - 101138582 RN - FLD0K1SJ1A (trimethyloxamine) RN - 29VT07BGDA (Citrulline) RN - 0 (Biomarkers) SB - IM MH - Male MH - Humans MH - Middle Aged MH - Female MH - Citrulline MH - *Cardiovascular Diseases MH - Retrospective Studies MH - Prognosis MH - Biomarkers MH - *Acute Coronary Syndrome OTO - NOTNLM OT - TMAO OT - cardiovascular diseases OT - citrulline OT - gut permeability OT - intestinal barrier EDAT- 2022/06/15 06:00 MHDA- 2022/10/28 06:00 CRDT- 2022/06/14 09:52 PHST- 2022/06/15 06:00 [pubmed] PHST- 2022/10/28 06:00 [medline] PHST- 2022/06/14 09:52 [entrez] AID - 10.17219/acem/150475 [doi] PST - ppublish SO - Adv Clin Exp Med. 2022 Oct;31(10):1121-1128. doi: 10.17219/acem/150475.