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Misto A, Provensi G, Vozella V, Passani MB, Piomelli D. Mast Cell-Derived Histamine Regulates Liver Ketogenesis via Oleoylethanolamide Signaling. Cell Metab 2019; 29:91-102.e5. [PMID: 30318340 DOI: 10.1016/j.cmet.2018.09.014] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 06/11/2018] [Accepted: 09/12/2018] [Indexed: 01/30/2023]
Abstract
The conversion of lipolysis-derived fatty acids into ketone bodies (ketogenesis) is a crucial metabolic adaptation to prolonged periods of food scarcity. The process occurs primarily in liver mitochondria and is initiated by fatty-acid-mediated stimulation of the ligand-operated transcription factor, peroxisome proliferator-activated receptor-α (PPAR-α). Here, we present evidence that mast cells contribute to the control of fasting-induced ketogenesis via a paracrine mechanism that involves secretion of histamine into the hepatic portal circulation, stimulation of liver H1 receptors, and local biosynthesis of the high-affinity PPAR-α agonist, oleoylethanolamide (OEA). Genetic or pharmacological interventions that disable any one of these events, including mast cell elimination, deletion of histamine- or OEA-synthesizing enzymes, and H1 blockade, blunt ketogenesis without affecting lipolysis. The results reveal an unexpected role for mast cells in the regulation of systemic fatty-acid homeostasis, and suggest that OEA may act in concert with lipolysis-derived fatty acids to activate liver PPAR-α and promote ketogenesis.
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Affiliation(s)
- Alessandra Misto
- Drug Discovery and Development, Fondazione Istituto Italiano di Tecnologia, Genoa 16163, Italy; School of Advanced Studies Sant'Anna, Pisa 56127, Italy
| | - Gustavo Provensi
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence 50139, Italy
| | - Valentina Vozella
- Drug Discovery and Development, Fondazione Istituto Italiano di Tecnologia, Genoa 16163, Italy
| | | | - Daniele Piomelli
- Departments of Anatomy and Neurobiology, Biological Chemistry and Pharmacology, School of Medicine, University of California, Irvine, CA 92697, USA.
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Francis HL, DeMorrow S, Franchitto A, Venter JK, Mancinelli RA, White MA, Meng F, Ueno Y, Carpino G, Renzi A, Baker KK, Shine HE, Francis TC, Gaudio E, Alpini GD, Onori P. Histamine stimulates the proliferation of small and large cholangiocytes by activation of both IP3/Ca2+ and cAMP-dependent signaling mechanisms. J Transl Med 2012; 92:282-94. [PMID: 22064319 PMCID: PMC3293651 DOI: 10.1038/labinvest.2011.158] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Although large cholangiocytes exert their functions by activation of cyclic adenosine 3',5'-monophosphate (cAMP), Ca(2+)-dependent signaling regulates the function of small cholangiocytes. Histamine interacts with four receptors, H1-H4HRs. H1HR acts by Gαq activating IP(3)/Ca(2+), whereas H2HR activates Gα(s) stimulating cAMP. We hypothesize that histamine increases biliary growth by activating H1HR on small and H2HR on large cholangiocytes. The expression of H1-H4HRs was evaluated in liver sections, isolated and cultured (normal rat intrahepatic cholangiocyte culture (NRIC)) cholangiocytes. In vivo, normal rats were treated with histamine or H1-H4HR agonists for 1 week. We evaluated: (1) intrahepatic bile duct mass (IBDM); (2) the effects of histamine, H1HR or H2HR agonists on NRIC proliferation, IP(3) and cAMP levels and PKCα and protein kinase A (PKA) phosphorylation; and (3) PKCα silencing on H1HR-stimulated NRIC proliferation. Small and large cholangiocytes express H1-H4HRs. Histamine and the H1HR agonist increased small IBDM, whereas histamine and the H2HR agonist increased large IBDM. H1HR agonists stimulated IP(3) levels, as well as PKCα phosphorylation and NRIC proliferation, whereas H2HR agonists increased cAMP levels, as well as PKA phosphorylation and NRIC proliferation. The H1HR agonist did not increase proliferation in PKCα siRNA-transfected NRICs. The activation of differential signaling mechanisms targeting small and large cholangiocytes is important for repopulation of the biliary epithelium during pathologies affecting different-sized bile ducts.
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Affiliation(s)
- Heather L Francis
- Department of Internal Medicine, Scott and White Digestive Disease Research Center, Scott and White Hospital and Texas A&M Health Science Center, College of Medicine, Temple, TX, USA,Division of Gastroenterology, Department of Medicine, Scott and White Hospital and Texas A&M Health Science Center, College of Medicine, Temple, TX, USA,Division of Research and Education, Scott and White Hospital and Texas A&M Health Science Center, College of Medicine, Temple, TX, USA
| | - Sharon DeMorrow
- Department of Internal Medicine, Scott and White Digestive Disease Research Center, Scott and White Hospital and Texas A&M Health Science Center, College of Medicine, Temple, TX, USA,Division of Gastroenterology, Department of Medicine, Scott and White Hospital and Texas A&M Health Science Center, College of Medicine, Temple, TX, USA
| | - Antonio Franchitto
- Department of Anatomical, Histological, Forensic Internal Medicine and Orthopedics Sciences, ‘La Sapienza’, Rome, Italy,Eleonora Lonillard Spencer Cenci Foundation, Rome, Italy
| | - Julie K Venter
- Division of Gastroenterology, Department of Medicine, Scott and White Hospital and Texas A&M Health Science Center, College of Medicine, Temple, TX, USA
| | - Romina A Mancinelli
- Department of Anatomical, Histological, Forensic Internal Medicine and Orthopedics Sciences, ‘La Sapienza’, Rome, Italy
| | - Mellanie A White
- Division of Gastroenterology, Department of Medicine, Scott and White Hospital and Texas A&M Health Science Center, College of Medicine, Temple, TX, USA
| | - Fanyin Meng
- Division of Gastroenterology, Department of Medicine, Scott and White Hospital and Texas A&M Health Science Center, College of Medicine, Temple, TX, USA,Division of Research and Education, Scott and White Hospital and Texas A&M Health Science Center, College of Medicine, Temple, TX, USA
| | - Yoshiyuki Ueno
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Guido Carpino
- Department Health Science, University of Rome‘Foro Italico’, Italy
| | - Anastasia Renzi
- Department of Internal Medicine, Scott and White Digestive Disease Research Center, Scott and White Hospital and Texas A&M Health Science Center, College of Medicine, Temple, TX, USA,Department of Anatomical, Histological, Forensic Internal Medicine and Orthopedics Sciences, ‘La Sapienza’, Rome, Italy
| | - Kimberly K Baker
- Division of Research and Education, Scott and White Hospital and Texas A&M Health Science Center, College of Medicine, Temple, TX, USA
| | - Hannah E Shine
- Division of Research and Education, Scott and White Hospital and Texas A&M Health Science Center, College of Medicine, Temple, TX, USA
| | - Taylor C Francis
- Division of Research and Education, Scott and White Hospital and Texas A&M Health Science Center, College of Medicine, Temple, TX, USA
| | - Eugenio Gaudio
- Department of Anatomical, Histological, Forensic Internal Medicine and Orthopedics Sciences, ‘La Sapienza’, Rome, Italy
| | - Gianfranco D Alpini
- Department of Internal Medicine, Scott and White Digestive Disease Research Center, Scott and White Hospital and Texas A&M Health Science Center, College of Medicine, Temple, TX, USA,Division of Gastroenterology, Department of Medicine, Scott and White Hospital and Texas A&M Health Science Center, College of Medicine, Temple, TX, USA,Division Research, Central Texas Veterans Health Care System, Scott and White Hospital and Texas A&M Health Science Center, College of Medicine, Temple, TX, USA
| | - Paolo Onori
- Department of Experimental Medicine, State University of L’Aquila, L’Aquila, Italy
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Glaser S, Francis H, Demorrow S, Lesage G, Fava G, Marzioni M, Venter J, Alpini G. Heterogeneity of the intrahepatic biliary epithelium. World J Gastroenterol 2006; 12:3523-36. [PMID: 16773709 PMCID: PMC4087568 DOI: 10.3748/wjg.v12.i22.3523] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The objectives of this review are to outline the recent findings related to the morphological heterogeneity of the biliary epithelium and the heterogeneous pathophysiological responses of different sized bile ducts to liver gastrointestinal hormones and peptides and liver injury/toxins with changes in apoptotic, proliferative and secretory activities. The knowledge of biliary function is rapidly increasing because of the recognition that biliary epithelial cells (cholangiocytes) are the targets of human cholangiopathies, which are characterized by proliferation/damage of bile ducts within a small range of sizes. The unique anatomy, morphology, innervation and vascularization of the biliary epithelium are consistent with function of cholangiocytes within different regions of the biliary tree. The in vivo models [e.g., bile duct ligation (BDL), partial hepatectomy, feeding of bile acids, carbon tetrachloride (CCl4) or α-naphthylisothiocyanate (ANIT)] and the in vivo experimental tools [e.g., freshly isolated small and large cholangiocytes or intrahepatic bile duct units (IBDU) and primary cultures of small and large murine cholangiocytes] have allowed us to demonstrate the morphological and functional heterogeneity of the intrahepatic biliary epithelium. These models demonstrated the differential secretory activities and the heterogeneous apoptotic and proliferative responses of different sized ducts. Similar to animal models of cholangiocyte proliferation/injury restricted to specific sized ducts, in human liver diseases bile duct damage predominates specific sized bile ducts. Future studies related to the functional heterogeneity of the intrahepatic biliary epithelium may disclose new pathophysiological treatments for patients with cholangiopathies.
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Affiliation(s)
- Shannon Glaser
- Department of Medicine, Division of R&E, Scott and White Memorial Hospital and The Texas A&M University System Health Science Center College of Medicine, MRB, 702 South West H.K. Dodgen Loop, Temple, Texas 76504, USA.
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