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Microdialysis-Assessed Adipose Tissue Metabolism, Circulating Cytokines and Outcome in Critical Illness
Microdialysis (MD) can provide continuous information about tissue composition. To assess in critically ill patients adipose tissue metabolic patterns, the relationships between metabolic patterns and blood cytokine concentration associations of adipose tissue energy metabolism and clinical outcome...
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Published in: | Metabolites 2018-10, Vol.8 (4), p.62 |
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description | Microdialysis (MD) can provide continuous information about tissue composition. To assess in critically ill patients adipose tissue metabolic patterns, the relationships between metabolic patterns and blood cytokine concentration associations of adipose tissue energy metabolism and clinical outcome we studied 203 mechanically ventilated general intensive care unit (ICU) patients. Upon ICU admission an MD catheter was inserted into the subcutaneous adipose tissue of the upper thigh to measure lactate (L), glucose, pyruvate (P), and glycerol. Serum concentrations of IL-10, IL-6, IL-8, and TNF-α were determined within 48 h from ICU admission. Mitochondrial dysfunction was defined as L/P ratio >30 and pyruvate ≥70 μmol/L, ischemia as L/P ratio >30 and pyruvate |
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To assess in critically ill patients adipose tissue metabolic patterns, the relationships between metabolic patterns and blood cytokine concentration associations of adipose tissue energy metabolism and clinical outcome we studied 203 mechanically ventilated general intensive care unit (ICU) patients. Upon ICU admission an MD catheter was inserted into the subcutaneous adipose tissue of the upper thigh to measure lactate (L), glucose, pyruvate (P), and glycerol. Serum concentrations of IL-10, IL-6, IL-8, and TNF-α were determined within 48 h from ICU admission. Mitochondrial dysfunction was defined as L/P ratio >30 and pyruvate ≥70 μmol/L, ischemia as L/P ratio >30 and pyruvate <70 μmol/L and no ischemia/no mitochondrial dysfunction (i.e. aerobic metabolism) was as L/P ratio ≤30. Metabolism was aerobic in 74% of patients. In 13% of patients there was biochemical evidence of ischemia and in 13% of patients of mitochondrial dysfunction. Mitochondrial dysfunction was associated with poor outcome. In conclusion, MD showed that about two thirds of critically ill patients have normal aerobic adipose tissue metabolism. Mitochondrial dysfunction was not common but was associated with poor outcome. Identifying subgroups of critically ill patients is crucial as different treatment strategies may improve survival.</description><identifier>ISSN: 2218-1989</identifier><identifier>EISSN: 2218-1989</identifier><identifier>DOI: 10.3390/metabo8040062</identifier><identifier>PMID: 30301230</identifier><language>eng</language><publisher>Switzerland: MDPI AG</publisher><subject>Adipose tissue ; Blood levels ; Body fat ; Catheters ; Cytokines ; Energy metabolism ; Glucose ; Glycerol ; Illnesses ; Infections ; intensive care unit ; Interleukin 10 ; Interleukin 6 ; Interleukin 8 ; Ischemia ; lactate clearance ; Lactic acid ; Metabolism ; Metabolites ; Microdialysis ; Mitochondria ; Patients ; Pyruvic acid ; Sepsis ; tissue ischemia ; Tumor necrosis factor-α</subject><ispartof>Metabolites, 2018-10, Vol.8 (4), p.62</ispartof><rights>2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). 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Mitochondrial dysfunction was associated with poor outcome. In conclusion, MD showed that about two thirds of critically ill patients have normal aerobic adipose tissue metabolism. Mitochondrial dysfunction was not common but was associated with poor outcome. Identifying subgroups of critically ill patients is crucial as different treatment strategies may improve survival.</description><subject>Adipose tissue</subject><subject>Blood levels</subject><subject>Body fat</subject><subject>Catheters</subject><subject>Cytokines</subject><subject>Energy metabolism</subject><subject>Glucose</subject><subject>Glycerol</subject><subject>Illnesses</subject><subject>Infections</subject><subject>intensive care unit</subject><subject>Interleukin 10</subject><subject>Interleukin 6</subject><subject>Interleukin 8</subject><subject>Ischemia</subject><subject>lactate clearance</subject><subject>Lactic acid</subject><subject>Metabolism</subject><subject>Metabolites</subject><subject>Microdialysis</subject><subject>Mitochondria</subject><subject>Patients</subject><subject>Pyruvic acid</subject><subject>Sepsis</subject><subject>tissue ischemia</subject><subject>Tumor necrosis factor-α</subject><issn>2218-1989</issn><issn>2218-1989</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>PIMPY</sourceid><sourceid>DOA</sourceid><recordid>eNpdkstr3DAQh01pSUKSY65F0EsPdaOXZflSWEwfCwm5pGehx3irrWxtJTuw_32VbBqyFUIjND8-zauqrgj-zFiHr0eYtYkSc4wFfVOdUUpkTTrZvX11P60uc97isgRuWkxOqlOGGSaU4bNqc-ttis7rsM8-16ucoWyHVs7vYgZ073NeAN0-fRR8Hj-h3ie7BD37aYP6_Rx_-wky0pNDd8ts4wjIT6hPfvZWB7QOobjzRfVu0CHD5bM9r35--3rf_6hv7r6v-9VNbbkkczkpuFYOprGD5dyAc9oN1FmAjnCnKXSYMcIlkJZyLXUzDC1ugfJOasYpO6_WB66Leqt2yY867VXUXj09xLRROpXIAigLptEGOBZCcOBCGsGE6TjHpKPGdIX15cDaLWaEEsM0Jx2OoMeeyf9Sm_igBCOiVL4APj4DUvyzQJ7V6LOFEPQEccmKEtJKShrBi_TDf9JtXNJUSqVoI6ksCfJHYH1QlZ7lnGB4CYZg9TgR6mgiiv796wxe1P_6z_4CLBOz6Q</recordid><startdate>20181006</startdate><enddate>20181006</enddate><creator>Ilias, Ioannis</creator><creator>Apollonatou, Sofia</creator><creator>Nikitas, Nikitas</creator><creator>Theodorakopoulou, Maria</creator><creator>Vassiliou, Alice G</creator><creator>Kotanidou, Anastasia</creator><creator>Dimopoulou, Ioanna</creator><general>MDPI AG</general><general>MDPI</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QR</scope><scope>8FD</scope><scope>8FE</scope><scope>8FH</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>LK8</scope><scope>M7P</scope><scope>P64</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>7X8</scope><scope>5PM</scope><scope>DOA</scope><orcidid>https://orcid.org/0000-0001-5718-7441</orcidid></search><sort><creationdate>20181006</creationdate><title>Microdialysis-Assessed Adipose Tissue Metabolism, Circulating Cytokines and Outcome in Critical Illness</title><author>Ilias, Ioannis ; 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subjects | Adipose tissue Blood levels Body fat Catheters Cytokines Energy metabolism Glucose Glycerol Illnesses Infections intensive care unit Interleukin 10 Interleukin 6 Interleukin 8 Ischemia lactate clearance Lactic acid Metabolism Metabolites Microdialysis Mitochondria Patients Pyruvic acid Sepsis tissue ischemia Tumor necrosis factor-α |
title | Microdialysis-Assessed Adipose Tissue Metabolism, Circulating Cytokines and Outcome in Critical Illness |
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