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Silva HM, Báfica A, Rodrigues-Luiz GF, Chi J, Santos PDA, Reis BS, Hoytema van Konijnenburg DP, Crane A, Arifa RDN, Martin P, Mendes DAGB, Mansur DS, Torres VJ, Cadwell K, Cohen P, Mucida D, Lafaille JJ. Vasculature-associated fat macrophages readily adapt to inflammatory and metabolic challenges. J Exp Med 2019; 216:786-806. [PMID: 30862706 PMCID: PMC6446877 DOI: 10.1084/jem.20181049] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 12/10/2018] [Accepted: 02/19/2019] [Indexed: 01/08/2023] Open
Abstract
Silva et al. describe and characterize a population of adipose tissue macrophages (VAMs) that are in close contact with the vasculature and powerfully uptake blood-borne macromolecules. VAMs harbor a repair/detoxifying gene signature and adapt quickly to infections and fasting. Tissue-resident macrophages are the most abundant immune cell population in healthy adipose tissue. Adipose tissue macrophages (ATMs) change during metabolic stress and are thought to contribute to metabolic syndrome. Here, we studied ATM subpopulations in steady state and in response to nutritional and infectious challenges. We found that tissue-resident macrophages from healthy epididymal white adipose tissue (eWAT) tightly associate with blood vessels, displaying very high endocytic capacity. We refer to these cells as vasculature-associated ATMs (VAMs). Chronic high-fat diet (HFD) results in the accumulation of a monocyte-derived CD11c+CD64+ double-positive (DP) macrophage eWAT population with a predominant anti-inflammatory/detoxifying gene profile, but reduced endocytic function. In contrast, fasting rapidly and reversibly leads to VAM depletion, while acute inflammatory stress induced by pathogens transiently depletes VAMs and simultaneously boosts DP macrophage accumulation. Our results indicate that ATM populations dynamically adapt to metabolic stress and inflammation, suggesting an important role for these cells in maintaining tissue homeostasis.
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Affiliation(s)
- Hernandez Moura Silva
- Kimmel Center for Biology and Medicine at the Skirball Institute, New York University School of Medicine, New York, NY
| | - André Báfica
- Kimmel Center for Biology and Medicine at the Skirball Institute, New York University School of Medicine, New York, NY.,Laboratório de Imunobiologia, Departamento de Microbiologia, Imunologia e Parasitologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil.,Laboratory of Mucosal Immunology, The Rockefeller University, New York, NY
| | - Gabriela Flavia Rodrigues-Luiz
- Laboratório de Imunobiologia, Departamento de Microbiologia, Imunologia e Parasitologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Jingyi Chi
- Laboratory of Molecular Metabolism, The Rockefeller University, New York, NY
| | - Patricia d'Emery Alves Santos
- Kimmel Center for Biology and Medicine at the Skirball Institute, New York University School of Medicine, New York, NY
| | - Bernardo S Reis
- Laboratory of Mucosal Immunology, The Rockefeller University, New York, NY
| | | | - Audrey Crane
- Laboratory of Molecular Metabolism, The Rockefeller University, New York, NY
| | - Raquel Duque Nascimento Arifa
- Kimmel Center for Biology and Medicine at the Skirball Institute, New York University School of Medicine, New York, NY
| | - Patricia Martin
- Kimmel Center for Biology and Medicine at the Skirball Institute, New York University School of Medicine, New York, NY
| | - Daniel Augusto G B Mendes
- Laboratório de Imunobiologia, Departamento de Microbiologia, Imunologia e Parasitologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Daniel Santos Mansur
- Laboratório de Imunobiologia, Departamento de Microbiologia, Imunologia e Parasitologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Victor J Torres
- Department of Microbiology, New York University School of Medicine, New York, NY
| | - Ken Cadwell
- Kimmel Center for Biology and Medicine at the Skirball Institute, New York University School of Medicine, New York, NY.,Department of Microbiology, New York University School of Medicine, New York, NY
| | - Paul Cohen
- Laboratory of Molecular Metabolism, The Rockefeller University, New York, NY
| | - Daniel Mucida
- Laboratory of Mucosal Immunology, The Rockefeller University, New York, NY
| | - Juan J Lafaille
- Kimmel Center for Biology and Medicine at the Skirball Institute, New York University School of Medicine, New York, NY .,Department of Pathology, New York University School of Medicine, New York, NY
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da Silva LM, Allemand A, Mendes DAGB, Dos Santos AC, André E, de Souza LM, Cipriani TR, Dartora N, Marques MCA, Baggio CH, Werner MF. Ethanolic extract of roots from Arctium lappa L. accelerates the healing of acetic acid-induced gastric ulcer in rats: Involvement of the antioxidant system. Food Chem Toxicol 2012; 51:179-87. [PMID: 23036453 DOI: 10.1016/j.fct.2012.09.026] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2010] [Revised: 09/21/2012] [Accepted: 09/23/2012] [Indexed: 01/12/2023]
Abstract
We evaluate the curative efficacy of the ethanolic extract (EET) of roots from Arctium lappa (bardana) in healing of chronic gastric ulcers induced by 80% acetic acid in rats and additionally studies the possible mechanisms underlying this action. Oral administration of EET (1, 3, 10 and 30mg/kg) reduced the gastric lesion area in 29.2%, 41.4%, 59.3% and 38.5%, respectively, and at 10mg/kg promoted significant regeneration of the gastric mucosa, which was confirmed by proliferating cell nuclear antigen immunohistochemistry. EET (10mg/kg) treatment did not increase the gastric mucus content but restored the superoxide dismutase activity, prevented the reduction of glutathione levels, reduced lipid hydroperoxides levels, inhibited the myeloperoxidase activity and reduced the microvascular permeability. In addition, EET reduced the free radical generation and increased scavenging of 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radicals in vitro. Furthermore, intraduodenal EET (10 and 30mg/kg) decreased volume and acidity of gastric secretion. Total phenolic compounds were high in EET (Folin-Ciocalteau assay) and the analysis by liquid chromatography-mass spectrometry revealed that the main compounds present in EET were a serie of hydroxycinnamoylquinic acid isomers. In conclusion, these data reveal that EET promotes regeneration of damaged gastric mucosa, probably through its antisecretory and antioxidative mechanisms.
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Affiliation(s)
- Luisa Mota da Silva
- Department of Pharmacology, Federal University of Parana, Curitiba, PR, Brazil
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