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Guardado M, Steurer M, Chapin C, Hernandez RD, Ballard PL, Torgerson D. The Urinary Metabolomic Fingerprint in Extremely Preterm Infants on Total Parenteral Nutrition vs. Enteral Feeds. Metabolites 2023; 13:971. [PMID: 37755251 PMCID: PMC10537655 DOI: 10.3390/metabo13090971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/18/2023] [Accepted: 08/21/2023] [Indexed: 09/28/2023] Open
Abstract
Total Parenteral Nutrition (TPN), which uses intravenous administration of nutrients, minerals and vitamins, is essential for sustaining premature infants until they transition to enteral feeds, but there is limited information on metabolomic differences between infants on TPN and enteral feeds. We performed untargeted global metabolomics on urine samples collected between 23-30 days of life from 314 infants born <29 weeks gestational age from the TOLSURF and PROP cohorts. Principal component analysis across all metabolites showed a separation of infants solely on TPN compared to infants who had transitioned to enteral feeds, indicating global metabolomic differences between infants based on feeding status. Among 913 metabolites that passed quality control filters, 609 varied in abundance between infants on TPN vs. enteral feeds at p < 0.05. Of these, 88% were in the direction of higher abundance in the urine of infants on enteral feeds. In a subset of infants in a longitudinal analysis, both concurrent and delayed changes in metabolite levels were observed with the initiation of enteral feeds. These infants had higher concentrations of essential amino acids, lipids, and vitamins, which are necessary for growth and development, suggesting the nutritional benefit of an enteral feeding regimen.
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Affiliation(s)
- Miguel Guardado
- Biological and Medical Informatics Graduate Program, School of Medicine, Mission Bay Campus, University of California, San Francisco, CA 94134, USA
- Department of Epidemiology and Biostatistics, School of Medicine, Mission Bay Campus, University of California, San Francisco, CA 94158, USA;
- Department of Bioengineering and Therapeutic Sciences, School of Medicine, Mission Bay Campus, University of California, San Francisco, CA 94134, USA;
| | - Martina Steurer
- Department of Pediatrics, School of Medicine, Mission Bay & Parnassus Campuses, University of California, San Francisco, CA 94158, USA; (M.S.); (C.C.); (P.L.B.)
| | - Cheryl Chapin
- Department of Pediatrics, School of Medicine, Mission Bay & Parnassus Campuses, University of California, San Francisco, CA 94158, USA; (M.S.); (C.C.); (P.L.B.)
| | - Ryan D. Hernandez
- Department of Bioengineering and Therapeutic Sciences, School of Medicine, Mission Bay Campus, University of California, San Francisco, CA 94134, USA;
| | - Philip L. Ballard
- Department of Pediatrics, School of Medicine, Mission Bay & Parnassus Campuses, University of California, San Francisco, CA 94158, USA; (M.S.); (C.C.); (P.L.B.)
| | - Dara Torgerson
- Department of Epidemiology and Biostatistics, School of Medicine, Mission Bay Campus, University of California, San Francisco, CA 94158, USA;
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Yan J, Zhao Y, Jiang L, Wang Y, Cai W. Multi-Omics Unravels Metabolic Alterations in the Ileal Mucosa of Neonatal Piglets Receiving Total Parenteral Nutrition. Metabolites 2023; 13:metabo13040555. [PMID: 37110213 PMCID: PMC10144288 DOI: 10.3390/metabo13040555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 03/30/2023] [Accepted: 04/10/2023] [Indexed: 04/29/2023] Open
Abstract
Total parenteral nutrition (TPN) is life-saving therapy for the pediatric patients with intestinal failure (IF) who cannot tolerate enteral nutrition (EN). However, TPN-induced metabolic alterations are also a critical issue for the maintenance of intestinal homeostasis, and thus the global metabolomic signatures need to be addressed. In this study, ileal mucosal biopsies were collected from 12 neonatal Bama piglets receiving either EN or TPN for 14 days, and changes in the intestinal metabolism were examined by multi-omics (HM350 Metabolomics + Tandem Mass Tag (TMT)-based proteomics). As a result, a total of 240 compounds were identified by metabolomics, including 56 down-regulated and 9 up-regulated metabolites. Notably, tissue levels of fatty acyl-carnitines (decreased by 35-85%) and succinate (decreased by 89%) dramatically decreased in the TPN group, suggestive of disrupted processes of fatty acid oxidation (FAO) and the citrate cycle, respectively. Interestingly, however, no differences were found in the production of adenosine 5'-triphosphate (ATP) between groups, suggesting that these dysregulated metabolites may have mainly led to the loss of bioactive compounds rather than energy deficit. Additionally, 4813 proteins were identified by proteomics in total, including 179 down-regulated and 329 up-regulated proteins. The analysis of protein-protein interactions (PPI) indicated that most of the differentially expressed proteins were clustered into "lipid metabolism" and "innate immune responses". In summary, this work provided new findings in TPN-induced intestinal metabolic alterations, which would be useful to the improvement of nutritional management for IF patients.
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Affiliation(s)
- Junkai Yan
- Division of Pediatric Gastroenterology and Nutrition, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200092, China
- Shanghai Institute for Pediatric Research, Shanghai 200092, China
- Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai 200092, China
| | - Yuling Zhao
- Department of Pediatric Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200092, China
| | - Lu Jiang
- Shanghai Institute for Pediatric Research, Shanghai 200092, China
- Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai 200092, China
| | - Ying Wang
- Division of Pediatric Gastroenterology and Nutrition, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200092, China
- Shanghai Institute for Pediatric Research, Shanghai 200092, China
- Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai 200092, China
| | - Wei Cai
- Division of Pediatric Gastroenterology and Nutrition, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200092, China
- Shanghai Institute for Pediatric Research, Shanghai 200092, China
- Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai 200092, China
- Department of Pediatric Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200092, China
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Saade MC, Clark AJ, Parikh SM. States of quinolinic acid excess in urine: A systematic review of human studies. Front Nutr 2022; 9:1070435. [PMID: 36590198 PMCID: PMC9800835 DOI: 10.3389/fnut.2022.1070435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 11/28/2022] [Indexed: 12/23/2022] Open
Abstract
Introduction Quinolinic acid is an intermediate compound derived from the metabolism of dietary tryptophan. Its accumulation has been reported in patients suffering a broad spectrum of diseases and conditions. In this manuscript, we present the results of a systematic review of research studies assessing urinary quinolinic acid in health and disease. Methods We performed a literature review using PubMed, Cochrane, and Scopus databases of all studies reporting data on urinary quinolinic acid in human subjects from December 1949 to January 2022. Results Fifty-seven articles met the inclusion criteria. In most of the reported studies, compared to the control group, quinolinic acid was shown to be at increased concentration in urine of patients suffering from different diseases and conditions. This metabolite was also demonstrated to correlate with the severity of certain diseases including juvenile idiopathic inflammatory myopathies, graft vs. host disease, autism spectrum disorder, and prostate cancer. In critically ill patients, elevated quinolinic acid in urine predicted a spectrum of adverse outcomes including hospital mortality. Conclusion Quinolinic acid has been implicated in the pathophysiology of multiple conditions. Its urinary accumulation appears to be a feature of acute physiological stress and several chronic diseases. The exact significance of these findings is still under investigation, and further studies are needed to reveal the subsequent implications of this accumulation.
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Affiliation(s)
- Marie Christelle Saade
- Division of Nephrology, Department of Medicine, University of Texas Southwestern, Dallas, TX, United States
| | - Amanda J. Clark
- Division of Nephrology, Department of Medicine, University of Texas Southwestern, Dallas, TX, United States
- Division of Pediatric Nephrology, Department of Pediatrics, University of Texas Southwestern, Dallas, TX, United States
| | - Samir M. Parikh
- Division of Nephrology, Department of Medicine, University of Texas Southwestern, Dallas, TX, United States
- Department of Pharmacology, University of Texas Southwestern, Dallas, TX, United States
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Li K, Tong HHY, Chen Y, Sun Y, Wang J. The emerging roles of next-generation metabolomics in critical care nutrition. Crit Rev Food Sci Nutr 2022; 64:1213-1224. [PMID: 36004623 DOI: 10.1080/10408398.2022.2113761] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Critical illness leads to millions of deaths worldwide each year, with a significant surge due to the COVID-19 pandemic. Patients with critical illness are frequently associated with systemic metabolic disorders and malnutrition. The idea of intervention for critically ill patients through enteral and parenteral nutrition has been paid more and more attention gradually. However, current nutritional therapies focus on evidence-based practice, and there have been lacking holistic approaches for nutritional support assessment. Metabolomics is a well-established omics technique in system biology that enables comprehensive profiling of metabolites in a biological system and thus provides the underlying information expressed and modulated by all other omics layers. In recent years, with the development of high-resolution and accurate mass spectrometry, metabolomics entered a new "generation", promoting its broader applications in critical care nutrition. In this review, we first described the technological development and milestones of next-generation metabolomics in the past 20 years. We then discussed the emerging roles of next-generation metabolomics in advancing our understanding of critical care nutrition, such as nutritional deficiency risk evaluation, metabolic mechanisms of nutritional therapies, and novel nutrition target identification.
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Affiliation(s)
- Kefeng Li
- Department of Critical Care Medicine, Yantai Yuhuangding Hospital Affiliated with Medical College of Qingdao University, Yantai, Shandong, China
- Faculty of Health Sciences and Sports, Macao Polytechnic University, Macao SAR, China
- School of Medicine, University of California, San Diego, California, USA
| | - Henry Hoi Yee Tong
- Faculty of Health Sciences and Sports, Macao Polytechnic University, Macao SAR, China
| | - Yuwei Chen
- The Second Clinical Medical College, Binzhou Medical University, Binzhou, Shandong, China
| | - Yizhu Sun
- Department of Critical Care Medicine, Yantai Yuhuangding Hospital Affiliated with Medical College of Qingdao University, Yantai, Shandong, China
| | - Jing Wang
- Department of Critical Care Medicine, Yantai Yuhuangding Hospital Affiliated with Medical College of Qingdao University, Yantai, Shandong, China
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