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Chioccioli M, Liu S, Magruder S, Tata A, Borriello L, McDonough JE, Konkimalla A, Kim SH, Nouws J, Gonzalez DG, Traub B, Ye X, Yang T, Entenberg DR, Krishnaswamy S, Hendry CE, Kaminski N, Tata PR, Sauler M. Stem cell migration drives lung repair in living mice. Dev Cell 2024; 59:830-840.e4. [PMID: 38377991 PMCID: PMC11003834 DOI: 10.1016/j.devcel.2024.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 06/12/2023] [Accepted: 02/06/2024] [Indexed: 02/22/2024]
Abstract
Tissue repair requires a highly coordinated cellular response to injury. In the lung, alveolar type 2 cells (AT2s) act as stem cells to replenish both themselves and alveolar type 1 cells (AT1s); however, the complex orchestration of stem cell activity after injury is poorly understood. Here, we establish longitudinal imaging of AT2s in murine intact tissues ex vivo and in vivo in order to track their dynamic behavior over time. We discover that a large fraction of AT2s become motile following injury and provide direct evidence for their migration between alveolar units. High-resolution morphokinetic mapping of AT2s further uncovers the emergence of distinct motile phenotypes. Inhibition of AT2 migration via genetic depletion of ArpC3 leads to impaired regeneration of AT2s and AT1s in vivo. Together, our results establish a requirement for stem cell migration between alveolar units and identify properties of stem cell motility at high cellular resolution.
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Affiliation(s)
- Maurizio Chioccioli
- Department of Genetics and Comparative Medicine, Yale University, New Haven, CT 06519, USA; Department of Comparative Medicine, Yale University, New Haven, CT 06519, USA.
| | - Shuyu Liu
- Department of Cell Biology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Sumner Magruder
- Department of Computer Science, Yale University, New Haven, CT 06511, USA
| | - Aleksandra Tata
- Department of Cell Biology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Lucia Borriello
- Department of Cancer and Cellular Biology, Lewis Katz School of Medicine, Fox Chase Cancer, Philadelphia, PA 19140, USA
| | - John E McDonough
- Faculty of Health Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Arvind Konkimalla
- Department of Cell Biology, Duke University School of Medicine, Durham, NC 27710, USA; Medical Scientist Training Program, Duke University School of Medicine, Durham, NC 27710, USA
| | - Sang-Hun Kim
- Pulmonary, Critical Care, and Sleep Medicine, Yale School of Medicine, New Haven, CT 06520, USA
| | - Jessica Nouws
- Pulmonary, Critical Care, and Sleep Medicine, Yale School of Medicine, New Haven, CT 06520, USA
| | - David G Gonzalez
- Department of Genetics and Comparative Medicine, Yale University, New Haven, CT 06519, USA
| | - Brian Traub
- Department of Pathology, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY 10461, USA
| | - Xianjun Ye
- Department of Pathology, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY 10461, USA
| | - Tao Yang
- Section of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - David R Entenberg
- Department of Pathology, Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY 10461, USA
| | - Smita Krishnaswamy
- Department of Genetics and Comparative Medicine, Yale University, New Haven, CT 06519, USA; Department of Computer Science, Yale University, New Haven, CT 06511, USA
| | - Caroline E Hendry
- Department of Genetics and Comparative Medicine, Yale University, New Haven, CT 06519, USA
| | - Naftali Kaminski
- Pulmonary, Critical Care, and Sleep Medicine, Yale School of Medicine, New Haven, CT 06520, USA
| | - Purushothama Rao Tata
- Department of Cell Biology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Maor Sauler
- Pulmonary, Critical Care, and Sleep Medicine, Yale School of Medicine, New Haven, CT 06520, USA
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2
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Slusher AL, Nouws J, Tokoglu F, Vash-Margita A, Matthews MD, Fitch M, Shankaran M, Hellerstein MK, Caprio S. Altered extracellular matrix dynamics is associated with insulin resistance in adolescent children with obesity. Obesity (Silver Spring) 2024; 32:593-602. [PMID: 38410080 PMCID: PMC11034857 DOI: 10.1002/oby.23974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/27/2023] [Accepted: 11/29/2023] [Indexed: 02/28/2024]
Abstract
OBJECTIVE The objective of this study was to examine the hypothesis that abdominal and gluteal adipocyte turnover, lipid dynamics, and fibrogenesis are dysregulated among insulin-resistant (IR) compared with insulin-sensitive (IS) adolescents with obesity. METHODS Seven IS and seven IR adolescents with obesity participated in a 3-h oral glucose tolerance test and a multi-section magnetic resonance imaging scan of the abdominal region to examine body fat distribution patterns and liver fat content. An 8-week 70% deuterated water (2 H2 O) labeling protocol examined adipocyte turnover, lipid dynamics, and fibrogenesis in vivo from biopsied abdominal and gluteal fat. RESULTS Abdominal and gluteal subcutaneous adipose tissue (SAT) turnover rates of lipid components were similar among IS and IR adolescents with obesity. However, the insoluble collagen (type I, subunit α2) isoform measured from abdominal, but not gluteal, SAT was elevated in IR compared with IS individuals. In addition, abdominal insoluble collagen Iα2 was associated with ratios of visceral-to-total (visceral adipose tissue + SAT) abdominal fat and whole-body and adipose tissue insulin signaling, and it trended toward a positive association with liver fat content. CONCLUSIONS Altered extracellular matrix dynamics, but not expandability, potentially decreases abdominal SAT lipid storage capacity, contributing to the pathophysiological pathways linking adipose tissue and whole-body IR with altered ectopic storage of lipids within the liver among IR adolescents with obesity.
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Affiliation(s)
- Aaron L Slusher
- Department of Pediatrics, Yale School of Medicine, New Haven, Connecticut, USA
| | - Jessica Nouws
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Fuyuze Tokoglu
- Department of Radiology and Biomedical Imaging, Yale School of Medicine, New Haven, Connecticut, USA
| | - Alla Vash-Margita
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale School of Medicine, New Haven, Connecticut, USA
| | - Marcy D Matthews
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, California, USA
| | - Mark Fitch
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, California, USA
| | - Mahalakshmi Shankaran
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, California, USA
| | - Marc K Hellerstein
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, California, USA
| | - Sonia Caprio
- Department of Pediatrics, Yale School of Medicine, New Haven, Connecticut, USA
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3
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Tricò D, Chiriacò M, Nouws J, Vash-Margita A, Kursawe R, Tarabra E, Galderisi A, Natali A, Giannini C, Hellerstein M, Ferrannini E, Caprio S. Alterations in adipose tissue distribution, cell morphology and function mark primary insulin hypersecretion in youths with obesity. Diabetes 2023:db230450. [PMID: 37870826 DOI: 10.2337/db23-0450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 10/16/2023] [Indexed: 10/24/2023]
Abstract
Excessive insulin secretion independent of insulin resistance, defined as primary hypersecretion, is associated with obesity and an unfavorable metabolic phenotype. We examined the characteristics of the adipose tissue in youths with primary insulin hypersecretion and the longitudinal metabolic alterations influenced by the complex adipo-insular interplay. In a multiethnic cohort of non-diabetic adolescents with obesity, primary insulin hypersecretors had enhanced model-derived β-cell glucose sensitivity and rate sensitivity, but worse glucose tolerance, despite similar demographics, adiposity, and insulin resistance measured by both OGTT and euglycemic-hyperinsulinemic clamp. Hypersecretors had greater intrahepatic and visceral fat depots at abdominal MRI, hypertrophic abdominal subcutaneous adipocytes, higher FFA and leptin serum levels per fat mass, and faster in vivo lipid turnover assessed by a long-term 2H2O labeling protocol. At 2-year follow up, hypersecretors had greater fat accrual and 3-fold higher risk for abnormal glucose tolerance, while individuals with hypertrophic adipocytes or higher leptin levels showed enhanced β-cell glucose sensitivity. Primary insulin hypersecretion is associated with marked alterations in adipose tissue distribution, cellularity, and lipid dynamics, independent of whole-body adiposity and insulin resistance. Pathogenetic insight into the metabolic crosstalk between β-cell and adipocyte may help identify individuals at risk for chronic hyperinsulinemia, body weight gain, and glucose intolerance.
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Affiliation(s)
- Domenico Tricò
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
- Laboratory of Metabolism, Nutrition, and Atherosclerosis, University of Pisa, Pisa, Italy
| | - Martina Chiriacò
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
- Laboratory of Metabolism, Nutrition, and Atherosclerosis, University of Pisa, Pisa, Italy
| | - Jessica Nouws
- Department of Pediatrics, Yale School of Medicine, New Haven, CT, USA
| | - Alla Vash-Margita
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA
| | - Romy Kursawe
- The Jackson Laboratory for Genomic Medicine, Farmington, CT, USA
| | | | - Alfonso Galderisi
- Department of Pediatrics, Yale School of Medicine, New Haven, CT, USA
| | - Andrea Natali
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
- Laboratory of Metabolism, Nutrition, and Atherosclerosis, University of Pisa, Pisa, Italy
| | - Cosimo Giannini
- Department of Pediatrics, University of Chieti "G. d'Annunzio", Chieti, Italy
| | - Marc Hellerstein
- Department of Nutritional Sciences and Toxicology, University of California at Berkeley, Berkeley, CA, USA
| | - Ele Ferrannini
- Institute of Clinical Physiology, National Research Council, Pisa, Italy
| | - Sonia Caprio
- Department of Pediatrics, Yale School of Medicine, New Haven, CT, USA
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Yang T, Hui R, Nouws J, Sauler M, Zeng T, Wu Q. Untargeted metabolomics analysis of esophageal squamous cell cancer progression. J Transl Med 2022; 20:127. [PMID: 35287685 PMCID: PMC8919643 DOI: 10.1186/s12967-022-03311-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 02/14/2022] [Indexed: 02/08/2023] Open
Abstract
Abstract90% of esophageal cancer are esophageal squamous cell carcinoma (ESCC) and ESCC has a very poor prognosis and high mortality. Nevertheless, the key metabolic pathways associated with ESCC progression haven’t been revealed yet. Metabolomics has become a new platform for biomarker discovery over recent years. We aim to elucidate dominantly metabolic pathway in all ESCC tumor/node/metastasis (TNM) stages and adjacent cancerous tissues. We collected 60 postoperative esophageal tissues and 15 normal tissues adjacent to the tumor, then performed Liquid Chromatography with tandem mass spectrometry (LC–MS/MS) analyses. The metabolites data was analyzed with metabolites differential and correlational expression heatmap according to stage I vs. con., stage I vs. stage II, stage II vs. stage III, and stage III vs. stage IV respectively. Metabolic pathways were acquired by Kyoto Encyclopedia of Genes and Genomes. (KEGG) pathway database. The metabolic pathway related genes were obtained via Gene Set Enrichment Analysis (GSEA). mRNA expression of ESCC metabolic pathway genes was detected by two public datasets: gene expression data series (GSE)23400 and The Cancer Genome Atlas (TCGA). Receiver operating characteristic curve (ROC) analysis is applied to metabolic pathway genes. 712 metabolites were identified in total. Glycerophospholipid metabolism was significantly distinct in ESCC progression. 16 genes of 77 genes of glycerophospholipid metabolism mRNA expression has differential significance between ESCC and normal controls. Phosphatidylserine synthase 1 (PTDSS1) and Lysophosphatidylcholine Acyltransferase1 (LPCAT1) had a good diagnostic value with Area under the ROC Curve (AUC) > 0.9 using ROC analysis. In this study, we identified glycerophospholipid metabolism was associated with the ESCC tumorigenesis and progression. Glycerophospholipid metabolism could be a potential therapeutic target of ESCC progression.
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5
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Sauler M, McDonough JE, Adams TS, Kothapalli N, Barnthaler T, Werder RB, Schupp JC, Nouws J, Robertson MJ, Coarfa C, Yang T, Chioccioli M, Omote N, Cosme C, Poli S, Ayaub EA, Chu SG, Jensen KH, Gomez JL, Britto CJ, Raredon MSB, Niklason LE, Wilson AA, Timshel PN, Kaminski N, Rosas IO. Characterization of the COPD alveolar niche using single-cell RNA sequencing. Nat Commun 2022; 13:494. [PMID: 35078977 PMCID: PMC8789871 DOI: 10.1038/s41467-022-28062-9] [Citation(s) in RCA: 70] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 12/14/2021] [Indexed: 12/16/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a leading cause of death worldwide, however our understanding of cell specific mechanisms underlying COPD pathobiology remains incomplete. Here, we analyze single-cell RNA sequencing profiles of explanted lung tissue from subjects with advanced COPD or control lungs, and we validate findings using single-cell RNA sequencing of lungs from mice exposed to 10 months of cigarette smoke, RNA sequencing of isolated human alveolar epithelial cells, functional in vitro models, and in situ hybridization and immunostaining of human lung tissue samples. We identify a subpopulation of alveolar epithelial type II cells with transcriptional evidence for aberrant cellular metabolism and reduced cellular stress tolerance in COPD. Using transcriptomic network analyses, we predict capillary endothelial cells are inflamed in COPD, particularly through increased CXCL-motif chemokine signaling. Finally, we detect a high-metallothionein expressing macrophage subpopulation enriched in advanced COPD. Collectively, these findings highlight cell-specific mechanisms involved in the pathobiology of advanced COPD.
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Affiliation(s)
- Maor Sauler
- Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, USA.
| | - John E McDonough
- Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, USA.
| | - Taylor S Adams
- Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Neeharika Kothapalli
- Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Thomas Barnthaler
- Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, USA
- Division of Pharmacology, Otto Loewi Research Center, Medical University of Graz, Graz, Austria
| | - Rhiannon B Werder
- Center for Regenerative Medicine of Boston University and Boston Medical Center, Boston, MA, 02118, USA
- The Pulmonary Center and Department of Medicine, Boston University School of Medicine, Boston, MA, 02118, USA
- QIMR Berghofer Medical Research Institute, Herston, QLD, 4006, Australia
| | - Jonas C Schupp
- Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, USA
- Department of Respiratory Medicine, Hannover Medical School and Biomedical Research in End-stage and Obstructive Lung Disease Hannover, German Lung Research Center (DZL), Hannover, Germany
| | - Jessica Nouws
- Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Matthew J Robertson
- Pulmonary, Critical Care and Sleep Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Cristian Coarfa
- Pulmonary, Critical Care and Sleep Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Tao Yang
- Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, USA
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Maurizio Chioccioli
- Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Norihito Omote
- Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Carlos Cosme
- Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Sergio Poli
- Department of Internal Medicine, Mount Sinai Medical Center, Miami, FL, USA
| | - Ehab A Ayaub
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Sarah G Chu
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | | | - Jose L Gomez
- Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Clemente J Britto
- Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Micha Sam B Raredon
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
- Medical Scientist Training Program, Yale School of Medicine, New Haven, CT, USA
| | - Laura E Niklason
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - Andrew A Wilson
- Center for Regenerative Medicine of Boston University and Boston Medical Center, Boston, MA, 02118, USA
- The Pulmonary Center and Department of Medicine, Boston University School of Medicine, Boston, MA, 02118, USA
| | | | - Naftali Kaminski
- Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Ivan O Rosas
- Pulmonary, Critical Care and Sleep Medicine, Baylor College of Medicine, Houston, TX, USA
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6
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Tilstam PV, Schulte W, Holowka T, Kim BS, Nouws J, Sauler M, Piecychna M, Pantouris G, Lolis E, Leng L, Bernhagen J, Fingerle-Rowson G, Bucala R. MIF but not MIF-2 recruits inflammatory macrophages in an experimental polymicrobial sepsis model. J Clin Invest 2021; 131:127171. [PMID: 34850744 DOI: 10.1172/jci127171] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 10/14/2021] [Indexed: 11/17/2022] Open
Abstract
Excessive inflammation drives the progression from sepsis to septic shock. Macrophage migration inhibitory factor (MIF) is of interest because MIF promoter polymorphisms predict mortality in different infections, and anti-MIF antibody improves survival in experimental models when administered 8 hours after infectious insult. The recent description of a second MIF superfamily member, D-dopachrome tautomerase (D-DT/MIF-2), prompted closer investigation of MIF-dependent responses. We subjected Mif-/- and Mif-2-/- mice to polymicrobial sepsis and observed a survival benefit with Mif but not Mif-2 deficiency. Survival was associated with reduced numbers of small peritoneal macrophages (SPMs) that, in contrast to large peritoneal macrophages (LPMs), were recruited into the peritoneal cavity. LPMs produced higher quantities of MIF than SPMs, but SPMs expressed higher levels of inflammatory cytokines and the MIF receptors CD74 and CXCR2. Adoptive transfer of WT SPMs into Mif-/- hosts reduced the protective effect of Mif deficiency in polymicrobial sepsis. Notably, MIF-2 lacks the pseudo-(E)LR motif present in MIF that mediates CXCR2 engagement and SPM migration, supporting a specific role for MIF in the recruitment and accumulation of inflammatory SPMs.
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Affiliation(s)
- Pathricia Veronica Tilstam
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA.,Department of Immunology, Harvard Medical School, Boston, Massachusetts, USA
| | - Wibke Schulte
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA.,Department of Surgery, Yale University School of Medicine, New Haven, Connecticut, USA.,Department of Surgery, Campus Charité Mitte, Campus Virchow-Klinikum, Charité, Universitätsmedizin Berlin, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
| | - Thomas Holowka
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Bong-Sung Kim
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA.,Department of Plastic, Reconstructive and Hand Surgery, RWTH Aachen University, Aachen, Germany.,Division of Plastic Surgery and Hand Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Jessica Nouws
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Maor Sauler
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Marta Piecychna
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Georgios Pantouris
- Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut, USA.,Department of Chemistry, University of the Pacific, Stockton, California, USA
| | - Elias Lolis
- Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Lin Leng
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Jürgen Bernhagen
- Department of Vascular Biology, Institute for Stroke and Dementia Research, Ludwig-Maximilians-University Munich, Munich, Germany.,Munich Cluster for Systems Neurology, Munich, Germany
| | - Günter Fingerle-Rowson
- Department I of Internal Medicine, University of Cologne, Center for Integrated Oncology Aachen Bonn Köln Düsseldorf, Cologne, Germany
| | - Richard Bucala
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
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7
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Tarabra E, Nouws J, Vash-Margita A, Hellerstein M, Shabanova V, McCollum S, Pierpont† B, Zhao D, Shulman GI, Caprio S. CIDEA expression in SAT from adolescent girls with obesity and unfavorable patterns of abdominal fat distribution. Obesity (Silver Spring) 2021; 29:2068-2080. [PMID: 34672413 PMCID: PMC8612981 DOI: 10.1002/oby.23295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/29/2021] [Accepted: 08/23/2021] [Indexed: 11/08/2022]
Abstract
OBJECTIVE This study investigated whether variations in cell death-inducing DNA fragmentation factor alpha subunit-like effector A (CIDEA) mRNA expression and protein levels are modulated by the pattern of abdominal fat distribution in adolescent girls with obesity. METHODS This study recruited 35 adolescent girls with obesity and characterized their abdominal fat distribution by magnetic resonance imaging. Participants had only a periumbilical/abdominal (n = 14) or a paired abdominal and gluteal subcutaneous adipose tissue (SAT) biopsy (n = 21). CIDEA expression was determined by reverse transcription-polymerase chain reaction, CIDEA protein level by Western blot, and the turnover of adipose lipids and adipocytes by 2 H2 O labeling. In six girls, a second abdominal SAT biopsy was performed (after ~34.2 months) to explore the weight gain effect on CIDEA expression in abdominal SAT. RESULTS CIDEA expression decreased in abdominal SAT from participants with high visceral adipose tissue (VAT)/(VAT+SAT); CIDEA inversely correlated with number of small adipocytes, with the increase in preadipocyte proliferation, and with adipogenesis. A strong inverse correlation was found between CIDEA protein level with the newly synthetized glycerol (r = -0.839, p = 0.0047). Following weight gain, an increase in adipocytes' cell diameter with a decrease in CIDEA expression and RNA-sequencing transcriptomic profile typical of adipocyte dysfunction was observed. CONCLUSIONS Reduced expression of CIDEA in girls with high VAT/(VAT+SAT) is associated with adipocyte hypertrophy and insulin resistance.
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Affiliation(s)
- Elena Tarabra
- Division of Pediatric Endocrinology, Department of Pediatrics, Yale University School of Medicine, New Haven, CT, USA
| | - Jessica Nouws
- Division of Pediatric Endocrinology, Department of Pediatrics, Yale University School of Medicine, New Haven, CT, USA
| | - Alla Vash-Margita
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - Marc Hellerstein
- Department of Nutritional Sciences and Toxicology, University of California at Berkeley, Berkeley, CA, USA
| | - Veronika Shabanova
- Division of Pediatric Endocrinology, Department of Pediatrics, Yale University School of Medicine, New Haven, CT, USA
- Yale School of Public Health, New Haven, CT, USA
| | - Sarah McCollum
- Division of Pediatric Endocrinology, Department of Pediatrics, Yale University School of Medicine, New Haven, CT, USA
| | - Bridget Pierpont†
- Division of Pediatric Endocrinology, Department of Pediatrics, Yale University School of Medicine, New Haven, CT, USA
| | - Dejian Zhao
- Yale Center for Genome Analysis, Yale University, New Haven, CT, USA
| | - Gerald I Shulman
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
- Department of Cellular and Molecular Physiology, Yale School of Medicine, New Haven, CT, USA
| | - Sonia Caprio
- Division of Pediatric Endocrinology, Department of Pediatrics, Yale University School of Medicine, New Haven, CT, USA
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8
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Nouws J, Wan F, Finnemore E, Roque W, Kim SJ, Bazan I, Li CX, Skold CM, Dai Q, Yan X, Chioccioli M, Neumeister V, Britto CJ, Sweasy J, Bindra R, Wheelock ÅM, Gomez JL, Kaminski N, Lee PJ, Sauler M. MicroRNA miR-24-3p reduces DNA damage responses, apoptosis, and susceptibility to chronic obstructive pulmonary disease. JCI Insight 2021; 6:134218. [PMID: 33290275 PMCID: PMC7934877 DOI: 10.1172/jci.insight.134218] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 12/02/2020] [Indexed: 12/27/2022] Open
Abstract
The pathogenesis of chronic obstructive pulmonary disease (COPD) involves aberrant responses to cellular stress caused by chronic cigarette smoke (CS) exposure. However, not all smokers develop COPD and the critical mechanisms that regulate cellular stress responses to increase COPD susceptibility are not understood. Because microRNAs are well-known regulators of cellular stress responses, we evaluated microRNA expression arrays performed on distal parenchymal lung tissue samples from 172 subjects with and without COPD. We identified miR-24-3p as the microRNA that best correlated with radiographic emphysema and validated this finding in multiple cohorts. In a CS exposure mouse model, inhibition of miR-24-3p increased susceptibility to apoptosis, including alveolar type II epithelial cell apoptosis, and emphysema severity. In lung epithelial cells, miR-24-3p suppressed apoptosis through the BH3-only protein BIM and suppressed homology-directed DNA repair and the DNA repair protein BRCA1. Finally, we found BIM and BRCA1 were increased in COPD lung tissue, and BIM and BRCA1 expression inversely correlated with miR-24-3p. We concluded that miR-24-3p, a regulator of the cellular response to DNA damage, is decreased in COPD, and decreased miR-24-3p increases susceptibility to emphysema through increased BIM and apoptosis.
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Affiliation(s)
- Jessica Nouws
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Feng Wan
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA.,Department of Anatomy, Beijing University of Chinese Medicine, Beijing, China
| | - Eric Finnemore
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Willy Roque
- Department of Internal Medicine, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - So-Jin Kim
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Isabel Bazan
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Chuan-Xing Li
- Division of Respiratory Medicine and Allergy, Department of Medicine, and Center for Molecular Medicine, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - C Magnus Skold
- Division of Respiratory Medicine and Allergy, Department of Medicine, and Center for Molecular Medicine, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Qile Dai
- Department of Biostatistics, Yale School of Public Health, New Haven, Connecticut, USA
| | - Xiting Yan
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA.,Department of Biostatistics, Yale School of Public Health, New Haven, Connecticut, USA
| | - Maurizio Chioccioli
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Veronique Neumeister
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Clemente J Britto
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Joann Sweasy
- Department of Radiation Oncology, University of Arizona College of Medicine, Tucson, Arizona, USA.,Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Ranjit Bindra
- Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Åsa M Wheelock
- Division of Respiratory Medicine and Allergy, Department of Medicine, and Center for Molecular Medicine, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Jose L Gomez
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Naftali Kaminski
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Patty J Lee
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA.,Section of Pulmonary, Allergy, and Critical Care Medicine, Department of Internal Medicine, Duke University School of Medicine, Durham, North Carolina, USA
| | - Maor Sauler
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
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9
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Tarabra E, Nouws J, Vash-Margita A, Nadzam GS, Goldberg R, Van Name M, Pierpont B, Knight JR, Shulman GI, Caprio S. The omentum of obese girls harbors small adipocytes and browning transcripts. JCI Insight 2020; 5:135448. [PMID: 32125283 PMCID: PMC7213797 DOI: 10.1172/jci.insight.135448] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 02/26/2020] [Indexed: 12/21/2022] Open
Abstract
Severe obesity (SO) affects about 6% of youth in the United States, augmenting the risks for cardiovascular disease and type 2 diabetes. Herein, we obtained paired omental adipose tissue (omVAT) and abdominal subcutaneous adipose tissue (SAT) biopsies from girls with SO undergoing sleeve gastrectomy (SG), to test whether differences in cellular and transcriptomic profiles between omVAT and SAT depots affect insulin sensitivity differently. Following weight loss, these analyses were repeated in a subgroup of subjects having a second SAT biopsy. We found that omVAT displayed smaller adipocytes compared with SAT, increased lipolysis through adipose triglyceride lipase phosphorylation, reduced inflammation, and increased expression of browning/beiging markers. Contrary to omVAT, SAT adipocyte diameter correlated with insulin resistance. Following SG, both weight and insulin sensitivity improved markedly in all subjects. SAT adipocytes' size became smaller, showing increased lipolysis through perilipin 1 phosphorylation, decreased inflammation, and increased expression in browning/beiging markers. In summary, in adolescent girls with SO, both omVAT and SAT depots showed distinct cellular and transcriptomic profiles. Following weight loss, the SAT depot changed its cellular morphology and transcriptomic profiles into more favorable ones. These changes in the SAT depot may play a fundamental role in the resolution of insulin resistance.
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Affiliation(s)
| | | | | | | | | | | | | | - James R Knight
- Department of Genetics, Yale University School of Medicine, New Haven, Connecticut, USA
- Yale Center for Genome Analysis, Yale University West Campus, Orange, Connecticut, USA
| | - Gerald I Shulman
- Department of Internal Medicine
- Department of Cellular and Molecular Physiology, and
- Yale Diabetes Research Center, Yale University School of Medicine, New Haven, Connecticut, USA
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10
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Nouws J, Fitch M, Mata M, Santoro N, Galuppo B, Kursawe R, Narayan D, Vash-Margita A, Pierpont B, Shulman GI, Hellerstein M, Caprio S. Altered In Vivo Lipid Fluxes and Cell Dynamics in Subcutaneous Adipose Tissues Are Associated With the Unfavorable Pattern of Fat Distribution in Obese Adolescent Girls. Diabetes 2019; 68:1168-1177. [PMID: 30936147 PMCID: PMC6610014 DOI: 10.2337/db18-1162] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 03/24/2019] [Indexed: 12/20/2022]
Abstract
Patterns of abdominal fat distribution (for example, a high vs. low visceral adipose tissue [VAT]/[VAT + subcutaneous adipose tissue (SAT)] ratio), independent of obesity, during adolescence carry a high risk for insulin resistance and type 2 diabetes. Longitudinal follow-up of a cohort of obese adolescents has recently revealed that a high ratio (high VAT/[VAT + SAT]) is a major determinant of fatty liver and metabolic impairment over time, with these effects being more pronounced in girls than in boys. To unravel the underlying metabolic alterations associated with the unfavorable VAT/(VAT + SAT) phenotype, we used the 2H2O labeling method to measure the turnover of adipose lipids and cells in the subcutaneous abdominal and gluteal/femoral adipose tissue (SAT) of weight-stable obese adolescent girls with a similar level of obesity but discordant VAT/(VAT + SAT) ratios. Girls with the unfavorable (high VAT/[VAT + SAT]) phenotype exhibited higher in vivo rates of triglyceride (TG) turnover (representing both lipolysis and synthesis at steady state), without significant differences in de novo lipogenesis in both abdominal and gluteal depots, compared with obese girls with the favorable phenotype. Moreover, mature adipocytes had higher turnover, with no difference in stromal vascular cell proliferation in both depots in the metabolically unfavorable phenotype. The higher TG turnover rates were significantly correlated with higher intrahepatic fat stores. These findings are contrary to the hypothesis that impaired capacity to deposit TGs or proliferation of new mature adipocytes are potential mechanisms for ectopic fat distribution in this setting. In summary, these results suggest that increased turnover of TGs (lipolysis) and of mature adipocytes in both abdominal and gluteal SAT may contribute to metabolic impairment and the development of fatty liver, even at this very early stage of disease.
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Affiliation(s)
- Jessica Nouws
- Division of Pediatric Endocrinology, Department of Pediatrics, Yale University School of Medicine, New Haven, CT
| | - Mark Fitch
- Department of Nutritional Sciences and Toxicology, University of California at Berkeley, Berkeley, CA
| | - Mariana Mata
- Division of Pediatric Endocrinology, Department of Pediatrics, Yale University School of Medicine, New Haven, CT
| | - Nicola Santoro
- Division of Pediatric Endocrinology, Department of Pediatrics, Yale University School of Medicine, New Haven, CT
| | - Brittany Galuppo
- Division of Pediatric Endocrinology, Department of Pediatrics, Yale University School of Medicine, New Haven, CT
| | - Romy Kursawe
- Diabetes and Obesity, The Jackson Laboratory, Farmington, CT
| | - Deepak Narayan
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Yale University School of Medicine, New Haven, CT
| | - Alla Vash-Margita
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT
| | - Bridget Pierpont
- Division of Pediatric Endocrinology, Department of Pediatrics, Yale University School of Medicine, New Haven, CT
| | - Gerald I Shulman
- Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT
- Department of Cellular and Molecular Physiology, Yale University, New Haven, CT
| | - Marc Hellerstein
- Department of Nutritional Sciences and Toxicology, University of California at Berkeley, Berkeley, CA
| | - Sonia Caprio
- Division of Pediatric Endocrinology, Department of Pediatrics, Yale University School of Medicine, New Haven, CT
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11
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Umano GR, Shabanova V, Pierpont B, Mata M, Nouws J, Tricò D, Galderisi A, Santoro N, Caprio S. A low visceral fat proportion, independent of total body fat mass, protects obese adolescent girls against fatty liver and glucose dysregulation: a longitudinal study. Int J Obes (Lond) 2018; 43:673-682. [PMID: 30337653 DOI: 10.1038/s41366-018-0227-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 08/13/2018] [Accepted: 08/29/2018] [Indexed: 12/21/2022]
Abstract
BACKGROUND The relative proportion of visceral fat (VAT) to subcutaneous fat (SAT) has been described as a major determinant of insulin resistance (IR). Our study sought to evaluate the effect of body fat distribution on glucose metabolism and intrahepatic fat content over time in a multiethnic cohort of obese adolescents. SUBJECTS/METHODS We examined markers of glucose metabolism by oral glucose tolerance test, and body fat distribution by abdominal MRI at baseline and after 19.2 ± 11.4 months in a cohort of 151 obese adolescents (88 girls, 63 boys; mean age 13.3 ± 3.4 years; mean BMI z-score 2.15 ± 0.70). Hepatic fat content was assessed by fast-gradient MRI in a subset of 93 subjects. We used the median value of VAT/(VAT + SAT) ratio within each gender at baseline to stratify our sample into high and low ratio groups (median value 0.0972 in girls and 0.118 in boys). RESULTS Female subjects tended to remain in their VAT/(VAT + SAT) category over time (change over follow-up P = 0.14 among girls, and P = 0.04 among boys). Baseline VAT/(VAT + SAT) strongly predicted the hepatic fat content, fasting insulin, 2-h glucose, and whole-body insulin sensitivity index at follow-up among girls, but not in boys. CONCLUSIONS The VAT/(VAT + SAT) ratio is a major determinant of impaired glucose metabolism and hepatic fat accumulation over time, and its effects are more pronounced in girls than in boys.
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Affiliation(s)
- Giuseppina R Umano
- Department of Pediatrics, Division of Pediatric Endocrinology, Yale University School of Medicine, New Haven, CT, 06520, USA.,Department of the Woman, the Child, of General and Specialized Surgery, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Veronika Shabanova
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Bridget Pierpont
- Department of Pediatrics, Division of Pediatric Endocrinology, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Mariana Mata
- Department of Pediatrics, Division of Pediatric Endocrinology, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Jessica Nouws
- Department of Pediatrics, Division of Pediatric Endocrinology, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Domenico Tricò
- Department of Internal Medicine, Section of Endocrinology, Yale University School of Medicine, New Haven, CT, 06520, USA.,Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Alfonso Galderisi
- Department of Pediatrics, Division of Pediatric Endocrinology, Yale University School of Medicine, New Haven, CT, 06520, USA.,Department of Women's and Children's Health, University of Padova, Padova, Italy
| | - Nicola Santoro
- Department of Pediatrics, Division of Pediatric Endocrinology, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Sonia Caprio
- Department of Pediatrics, Division of Pediatric Endocrinology, Yale University School of Medicine, New Haven, CT, 06520, USA.
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12
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Tricò D, Caprio S, Rosaria Umano G, Pierpont B, Nouws J, Galderisi A, Kim G, Mata MM, Santoro N. Metabolic Features of Nonalcoholic Fatty Liver (NAFL) in Obese Adolescents: Findings From a Multiethnic Cohort. Hepatology 2018; 68:1376-1390. [PMID: 29665034 PMCID: PMC6173637 DOI: 10.1002/hep.30035] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 04/06/2018] [Indexed: 12/28/2022]
Abstract
UNLABELLED We conducted a prospective study in a large, multiethnic cohort of obese adolescents to characterize clinical and genetic features associated with pediatric nonalcoholic fatty liver (NAFL), the most common cause of chronic liver disease in youth. A total of 503 obese adolescents were enrolled, including 191 (38.0%) whites, 134 (26.6%) blacks, and 178 (35.4%) Hispanics. Participants underwent abdominal magnetic resonance imaging (MRI) to quantify hepatic fat fraction (HFF), an oral glucose tolerance test (OGTT) to assess glucose tolerance and insulin sensitivity, and the genotyping of three single-nucleotide polymorphisms (SNPs) associated with nonalcoholic fatty liver disease (NAFLD) (patatin-like phospholipase domain-containing protein 3 [PNPLA3] rs738409, glucokinase regulatory protein [GCKR] rs1260326, and transmembrane 6 superfamily member 2 [TM6SF2] rs58542926). Assessments were repeated in 133 subjects after a 2-year follow-up. Prevalence of nonalcoholic fatty liver (NAFL) was 41.6% (209 patients) and ranged widely among ethnicities, being 42.9% in whites, 15.7% in blacks, and 59.6% in Hispanics (P < 0.0001). Among adolescents with NAFL, blacks showed the highest prevalence of altered glucose homeostasis (66%; P = 0.0003). Risk factors for NAFL incidence were white or Hispanic ethnicity (P = 0.021), high fasting C-peptide levels (P = 0.0006), and weight gain (P = 0.0006), whereas baseline HFF (P = 0.004) and weight loss (P = 0.032) predicted resolution of NAFL at follow-up. Adding either gene variant to these variables improved significantly the model predictive performance. CONCLUSION Black obese adolescents are relatively protected from liver steatosis, but are more susceptible to the deleterious effects of NAFL on glucose metabolism. The combination of ethnicity/race with markers of insulin resistance and genetic factors might help identify obese youth at risk for developing NAFL.
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Affiliation(s)
- Domenico Tricò
- Department of Internal MedicineYale University School of MedicineNew HavenCT,Department of Clinical and Experimental MedicineUniversity of PisaPisaItaly
| | - Sonia Caprio
- Department of PediatricsYale University School of MedicineNew HavenCT
| | - Giuseppina Rosaria Umano
- Department of PediatricsYale University School of MedicineNew HavenCT,Department of PediatricsUniversity of Campania “L. Vanvitelli”NapoliItaly
| | - Bridget Pierpont
- Department of PediatricsYale University School of MedicineNew HavenCT
| | - Jessica Nouws
- Department of PediatricsYale University School of MedicineNew HavenCT
| | - Alfonso Galderisi
- Department of PediatricsYale University School of MedicineNew HavenCT
| | - Grace Kim
- Seattle Children’s HospitalSeattleWA
| | - Mariana M. Mata
- Department of PediatricsYale University School of MedicineNew HavenCT
| | - Nicola Santoro
- Department of PediatricsYale University School of MedicineNew HavenCT
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13
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Kursawe R, Dixit VD, Scherer PE, Santoro N, Narayan D, Gordillo R, Giannini C, Lopez X, Pierpont B, Nouws J, Shulman GI, Caprio S. A Role of the Inflammasome in the Low Storage Capacity of the Abdominal Subcutaneous Adipose Tissue in Obese Adolescents. Diabetes 2016; 65:610-8. [PMID: 26718495 PMCID: PMC4764142 DOI: 10.2337/db15-1478] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 12/17/2015] [Indexed: 12/26/2022]
Abstract
The innate immune cell sensor leucine-rich-containing family, pyrin domain containing 3 (NLRP3) inflammasome controls the activation of caspase-1, and the release of proinflammatory cytokines interleukin (IL)-1β and IL-18. The NLRP3 inflammasome is implicated in adipose tissue inflammation and the pathogenesis of insulin resistance. Herein, we tested the hypothesis that adipose tissue inflammation and NLRP3 inflammasome are linked to the downregulation of subcutaneous adipose tissue (SAT) adipogenesis/lipogenesis in obese adolescents with altered abdominal fat partitioning. We performed abdominal SAT biopsies on 58 obese adolescents and grouped them by MRI-derived visceral fat to visceral adipose tissue (VAT) plus SAT (VAT/VAT+SAT) ratio (cutoff 0.11). Adolescents with a high VAT/VAT+SAT ratio showed higher SAT macrophage infiltration and higher expression of the NLRP3 inflammasome-related genes (i.e., TLR4, NLRP3, IL1B, and CASP1). The increase in inflammation markers was paralleled by a decrease in genes related to insulin sensitivity (ADIPOQ, GLUT4, PPARG2, and SIRT1) and lipogenesis (SREBP1c, ACC, LPL, and FASN). Furthermore, SAT ceramide concentrations correlated with the expression of CASP1 and IL1B. Infiltration of macrophages and upregulation of the NLRP3 inflammasome together with the associated high ceramide content in the plasma and SAT of obese adolescents with a high VAT/VAT+SAT may contribute to the limited expansion of the subcutaneous abdominal adipose depot and the development of insulin resistance.
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Affiliation(s)
- Romy Kursawe
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT
| | - Vishwa D Dixit
- Section of Comparative Medicine, Yale Program in Integrative Cell Signaling and Neurobiology of Metabolism, and Department of Immunobiology, Yale University School of Medicine, New Haven, CT
| | - Philipp E Scherer
- Internal Medicine, Touchstone Diabetes Center, The University of Texas Southwestern Medical Center, Dallas, TX
| | - Nicola Santoro
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT
| | - Deepak Narayan
- Department of Plastic Surgery, Yale University School of Medicine, New Haven, CT
| | - Ruth Gordillo
- Internal Medicine, Touchstone Diabetes Center, The University of Texas Southwestern Medical Center, Dallas, TX
| | - Cosimo Giannini
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT
| | - Ximena Lopez
- Department of Pediatrics, The University of Texas Southwestern Medical Center, Dallas, TX
| | - Bridget Pierpont
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT
| | - Jessica Nouws
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT
| | - Gerald I Shulman
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT Howard Hughes Medical Institute, Chevy Chase, MD
| | - Sonia Caprio
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT
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14
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Nouws J, Goswami AV, Bestwick M, McCann BJ, Surovtseva YV, Shadel GS. Mitochondrial Ribosomal Protein L12 Is Required for POLRMT Stability and Exists as Two Forms Generated by Alternative Proteolysis during Import. J Biol Chem 2015; 291:989-97. [PMID: 26586915 DOI: 10.1074/jbc.m115.689299] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Indexed: 01/21/2023] Open
Abstract
To translate the 13 mtDNA-encoded mRNAs involved in oxidative phosphorylation (OXPHOS), mammalian mitochondria contain a dedicated set of ribosomes comprising rRNAs encoded by the mitochondrial genome and mitochondrial ribosomal proteins (MRPs) that are encoded by nuclear genes and imported into the matrix. In addition to their role in the ribosome, several MRPs have auxiliary functions or have been implicated in other cellular processes like cell cycle regulation and apoptosis. For example, we have shown that human MRPL12 binds and activates mitochondrial RNA polymerase (POLRMT), and hence has distinct functions in the ribosome and mtDNA transcription. Here we provide concrete evidence that there are two mature forms of mammalian MRPL12 that are generated by a two-step cleavage during import, involving efficient cleavage by mitochondrial processing protease and a second inefficient or regulated cleavage by mitochondrial intermediate protease. We also show that knock-down of MRPL12 by RNAi results in instability of POLRMT, but not other primary mitochondrial transcription components, and a corresponding decrease in mitochondrial transcription rates. Knock-down of MRPL10, the binding partner of MRPL12 in the ribosome, results in selective degradation of the mature long form of MRPL12, but has no effect on POLRMT. We propose that the two forms of MRPL12 are involved in homeostatic regulation of mitochondrial transcription and ribosome biogenesis that likely contribute to cell cycle, growth regulation, and longevity pathways to which MRPL12 has been linked.
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Affiliation(s)
| | | | - Megan Bestwick
- From the Departments of Pathology and the Department of Chemistry, Linfield College, McMinnville, Oregon 97128, and
| | - Beverly Jo McCann
- From the Departments of Pathology and the Department of Biology, Technische Universität Darmstadt, 64287 Darmstadt, Germany
| | | | - Gerald S Shadel
- From the Departments of Pathology and Genetics, Yale School of Medicine, New Haven, Connecticut 06520-8023,
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15
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McKay SE, Yan W, Nouws J, Thormann MJ, Raimundo N, Khan A, Santos-Sacchi J, Song L, Shadel GS. Auditory Pathology in a Transgenic mtTFB1 Mouse Model of Mitochondrial Deafness. Am J Pathol 2015; 185:3132-40. [PMID: 26552864 DOI: 10.1016/j.ajpath.2015.08.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 07/31/2015] [Accepted: 08/14/2015] [Indexed: 12/13/2022]
Abstract
The A1555G mutation in the 12S rRNA gene of human mitochondrial DNA causes maternally inherited, nonsyndromic deafness, an extreme case of tissue-specific mitochondrial pathology. A transgenic mouse strain that robustly overexpresses the mitochondrial 12S ribosomal RNA methyltransferase TFB1M (Tg-mtTFB1 mice) exhibits progressive hearing loss that we proposed models aspects of A1555G-related pathology in humans. Although our previous studies of Tg-mtTFB1 mice implicated apoptosis in the spiral ganglion and stria vascularis because of mitochondrial reactive oxygen species-mediated activation of AMP kinase (AMPK) and the nuclear transcription factor E2F1, detailed auditory pathology was not delineated. Herein, we show that Tg-mtTFB1 mice have reduced endocochlear potential, indicative of significant stria vascularis dysfunction, but without obvious signs of strial atrophy. We also observed decreased auditory brainstem response peak 1 amplitude and prolonged wave I latency, consistent with apoptosis of spiral ganglion neurons. Although no major loss of hair cells was observed, there was a mild impairment of voltage-dependent electromotility of outer hair cells. On the basis of these results, we propose that these events conspire to produce the progressive hearing loss phenotype in Tg-mtTFB1 mice. Finally, genetically reducing AMPK α1 rescues hearing loss in Tg-mtTFB1 mice, confirming that aberrant up-regulation of AMPK signaling promotes the observed auditory pathology. The relevance of these findings to human A1555G patients and the potential therapeutic value of reducing AMPK activity are discussed.
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Affiliation(s)
- Sharen E McKay
- Department of Pathology, Yale School of Medicine, New Haven, Connecticut; Department of Psychology, University of Bridgeport, Bridgeport, Connecticut
| | - Wayne Yan
- Department of Surgery, Yale School of Medicine, New Haven, Connecticut
| | - Jessica Nouws
- Department of Pathology, Yale School of Medicine, New Haven, Connecticut
| | | | - Nuno Raimundo
- Institute of Cell Biology, University Medical Center Göettingen, Göttingen, Germany
| | - Abdul Khan
- Department of Pathology, Yale School of Medicine, New Haven, Connecticut
| | - Joseph Santos-Sacchi
- Department of Surgery, Yale School of Medicine, New Haven, Connecticut; Department of Cellular and Molecular Physiology, Yale School of Medicine, New Haven, Connecticut; Department of Neurobiology, Yale School of Medicine, New Haven, Connecticut.
| | - Lei Song
- Department of Surgery, Yale School of Medicine, New Haven, Connecticut.
| | - Gerald S Shadel
- Department of Pathology, Yale School of Medicine, New Haven, Connecticut; Department of Genetics, Yale School of Medicine, New Haven, Connecticut.
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16
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Abstract
Regulation of gene expression in mammalian mitochondria by microRNAs is reported by Zhang et al. During muscle cell differentiation, localization of a miRNA is increased within mitochondria, where it interacts with Ago2 to selectively activate translation of mtDNA-encoded mRNAs. The findings represent a new mitochondrial regulatory pathway and a potentially powerful means to purposefully manipulate mtDNA expression.
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Affiliation(s)
- Jessica Nouws
- Department of Pathology, Yale School of Medicine, New Haven, CT 06437, USA
| | - Gerald S Shadel
- Department of Pathology, Yale School of Medicine, New Haven, CT 06437, USA; Department of Genetics, Yale School of Medicine, New Haven, CT 06437, USA.
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17
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Wortmann SB, Kluijtmans LAJ, Rodenburg RJ, Sass JO, Nouws J, van Kaauwen EP, Kleefstra T, Tranebjaerg L, de Vries MC, Isohanni P, Walter K, Alkuraya FS, Smuts I, Reinecke CJ, van der Westhuizen FH, Thorburn D, Smeitink JAM, Morava E, Wevers RA. 3-Methylglutaconic aciduria--lessons from 50 genes and 977 patients. J Inherit Metab Dis 2013; 36:913-21. [PMID: 23355087 DOI: 10.1007/s10545-012-9579-6] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 12/18/2012] [Accepted: 12/20/2012] [Indexed: 10/27/2022]
Abstract
Elevated urinary excretion of 3-methylglutaconic acid is considered rare in patients suspected of a metabolic disorder. In 3-methylglutaconyl-CoA hydratase deficiency (mutations in AUH), it derives from leucine degradation. In all other disorders with 3-methylglutaconic aciduria the origin is unknown, yet mitochondrial dysfunction is thought to be the common denominator. We investigate the biochemical, clinical and genetic data of 388 patients referred to our centre under suspicion of a metabolic disorder showing 3-methylglutaconic aciduria in routine metabolic screening. Furthermore, we investigate 591 patients with 50 different, genetically proven, mitochondrial disorders for the presence of 3-methylglutaconic aciduria. Three percent of all urine samples of the patients referred showed 3-methylglutaconic aciduria, often in correlation with disorders not reported earlier in association with 3-methylglutaconic aciduria (e.g. organic acidurias, urea cycle disorders, haematological and neuromuscular disorders). In the patient cohort with genetically proven mitochondrial disorders 11% presented 3-methylglutaconic aciduria. It was more frequently seen in ATPase related disorders, with mitochondrial DNA depletion or deletion, but not in patients with single respiratory chain complex deficiencies. Besides, it was a consistent feature of patients with mutations in TAZ, SERAC1, OPA3, DNAJC19 and TMEM70 accounting for mitochondrial membrane related pathology. 3-methylglutaconic aciduria is found quite frequently in patients suspected of a metabolic disorder, and mitochondrial dysfunction is indeed a common denominator. It is only a discriminative feature of patients with mutations in AUH, TAZ, SERAC1, OPA3, DNAJC19 TMEM70. These conditions should therefore be referred to as inborn errors of metabolism with 3-methylglutaconic aciduria as discriminative feature.
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Affiliation(s)
- Saskia B Wortmann
- Nijmegen Center for Mitochondrial Disorders (NCMD) at the Department of Pediatrics and the Institute of Genetic and Metabolic Disease (IGMD), Radboud University Medical Centre, P.O Box 9101, 6500 HB, Nijmegen, The Netherlands,
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18
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Nouws J, te Brinke H, Nijtmans LG, Houten SM. ACAD9, a complex I assembly factor with a moonlighting function in fatty acid oxidation deficiencies. Hum Mol Genet 2013; 23:1311-9. [DOI: 10.1093/hmg/ddt521] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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19
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Nouws J, Wibrand F, van den Brand M, Venselaar H, Duno M, Lund AM, Trautner S, Nijtmans L, Ostergard E. A Patient with Complex I Deficiency Caused by a Novel ACAD9 Mutation Not Responding to Riboflavin Treatment. JIMD Rep 2013; 12:37-45. [PMID: 23996478 DOI: 10.1007/8904_2013_242] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 05/14/2013] [Accepted: 05/16/2013] [Indexed: 12/31/2022] Open
Abstract
Here we report a patient with a new pathogenic mutation in ACAD9. Shortly after birth she presented with respiratory insufficiency and a high lactate level. At age 7 weeks, she was diagnosed with severe hypertrophic cardiomyopathy and she suffered from muscle weakness and hypotonia. Her condition deteriorated during intercurrent illnesses and she died at 6 months of age in cardiogenic shock. Analysis of respiratory chain activities in muscle and fibroblasts revealed an isolated complex I deficiency. A genome-wide screen for homozygosity revealed several homozygous regions. Four candidate genes were found and sequencing revealed a homozygous missense mutation in ACAD9. The mutation results in an Ala220Val amino acid substitution located near the catalytic core of ACAD9. SDS and BN-PAGE analysis showed severely decreased ACAD9 and complex I protein levels, and lentiviral complementation of patient fibroblasts partially rescued the complex I deficiency. Riboflavin supplementation did not ameliorate the complex I deficiency in patient fibroblasts. More than a dozen ACAD9 patients with complex I deficiency have been identified in the last 3 years, indicating that ACAD9 is important for complex I assembly, and that ACAD9 mutations are a relatively frequent cause of complex I deficiency.
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Affiliation(s)
- Jessica Nouws
- Nijmegen Centre for Mitochondrial Disorders at the Department of Pediatrics, Radboud University Medical Centre, 6500 HB, Nijmegen, The Netherlands
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Nouws J, Nijtmans LGJ, Smeitink JA, Vogel RO. Assembly factors as a new class of disease genes for mitochondrial complex I deficiency: cause, pathology and treatment options. Brain 2011; 135:12-22. [DOI: 10.1093/brain/awr261] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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Bousquet E, Nouws J, Terlouw P, de Kleyne S. Pharmacokinetics of doxycycline in pigs following oral administration in feed. Vet Res 1998; 29:475-85. [PMID: 9779560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023] Open
Abstract
Doxycycline medicated feed was administered to healthy fattening pigs for an 8-day period either for 1 h every 12 h or ad libitum. The average dosage regimen ranged between 11.8 and 13.3 mg/kg/day. Doxycycline concentrations were determined in plasma, lung and nasal mucosa using a high performance liquid chromatography assay (HPLC). The agreement between the doxycycline HPLC assay and a bioassay was also assessed in plasma. Following the multiple medicated feed administration every 12 h, the plasma concentrations were best described by a one-compartmental model with first-order absorption. Steady-state plasma concentrations ranged between 0.7 and 1 microgram/mL. The mean accumulation factor and elimination half-life were, respectively, 1.8 +/- 0.4 and 5.9 +/- 1.0 h. Following ad libitum administration of medicated feed, steady-state plasma concentrations ranged between 0.9 and 1.5 micrograms/mL. At the end of the treatment, the doxycycline lung and nasal mucosa concentrations were 1.7 +/- 0.4 micrograms/g and 2.9 +/- 0.6 micrograms/g, respectively. These data validate the dosage regimen tested in order to control pig respiratory infections, provided that controlled clinical studies are confirmatory.
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Haasnoot W, Korsrud GO, Cazemier G, Maneval F, Keukens H, Nouws J. Application of an enzyme immunoassay for the determination of sulphamethazine (sulphadimidine) residues in swine urine and plasma and their use as predictors of the level in edible tissue. Food Addit Contam 1996; 13:811-21. [PMID: 8885321 DOI: 10.1080/02652039609374468] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The potential of an enzyme immunoassay (EIA) with high cross-reactivity towards the major metabolite (N4-acetyl-sulphamethazine) of sulphamethazine was tested for screening fluids and tissues. Healthy pigs were given 20 mg sulphamethazine per kg body weight per day in their drinking water for 2 days. Groups of four pigs were slaughtered after 3, 4 and 7 days withdrawal. The results were compared with liquid chromatographic analysis for urine, plasma, kidney, liver, gluteal muscle and diaphragm. In general, concentrations found by the EIA were higher than those found by liquid chromatography (LC) because sulphamethazine metabolites were detected by the EIA and not by LC. Using the EIA for the detection of sulphamethazine and the major metabolite in urine and plasma, predictive relationships (tissue-fluid ratios) for the concentration of the parent drug in tissue, determined by LC, were calculated. The tissue-plasma ratios for muscle, liver and kidney were 0.1, 0.2 and 0.1, respectively. The tissue-urine ratios for muscle, liver and kidney were 0.02, 0.03 and 0.03, respectively. Owing to the higher concentration of the parent drug in both fluids, the presence of the major metabolite in urine and the sensitivity of the EIA, tissue can be screened for low concentrations of sulphamethazine.
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Affiliation(s)
- W Haasnoot
- State Institute for Quality Control of Agricultural Products (RIKILT-DLO), Wageningen, The Netherlands
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