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Cinti F, Leccisotti L, Sorice GP, Capece U, D'Amario D, Lorusso M, Gugliandolo S, Morciano C, Guarneri A, Guzzardi MA, Mezza T, Capotosti A, Indovina L, Ferraro PM, Iozzo P, Crea F, Giordano A, Giaccari A. Dapagliflozin treatment is associated with a reduction of epicardial adipose tissue thickness and epicardial glucose uptake in human type 2 diabetes. Cardiovasc Diabetol 2023; 22:349. [PMID: 38115004 PMCID: PMC10731727 DOI: 10.1186/s12933-023-02091-0] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 12/11/2023] [Indexed: 12/21/2023] Open
Abstract
OBJECTIVE We recently demonstrated that treatment with sodium-glucose cotransporter-2 inhibitors (SGLT-2i) leads to an increase in myocardial flow reserve in patients with type 2 diabetes (T2D) with stable coronary artery disease (CAD). The mechanism by which this occurs is, however, unclear. One of the risk factors for cardiovascular disease is inflammation of epicardial adipose tissue (EAT). Since the latter is often increased in type 2 diabetes patients, it could play a role in coronary microvascular dysfunction. It is also well known that SGLT-2i modify adipose tissue metabolism. We aimed to investigate the effects of the SGLT-2i dapagliflozin on metabolism and visceral and subcutaneous adipose tissue thickness in T2D patients with stable coronary artery disease and to verify whether these changes could explain observed changes in myocardial flow. METHODS We performed a single-center, prospective, randomized, double-blind, controlled clinical trial with 14 T2D patients randomized 1:1 to SGLT-2i dapagliflozin (10 mg daily) or placebo. The thickness of visceral (epicardial, mediastinal, perirenal) and subcutaneous adipose tissue and glucose uptake were assessed at baseline and 4 weeks after treatment initiation by 2-deoxy-2-[18F]fluoro-D-glucose Positron Emission Tomography/Computed Tomography during hyperinsulinemic euglycemic clamp. RESULTS The two groups were well-matched for baseline characteristics (age, diabetes duration, HbA1c, BMI, renal and heart function). Dapagliflozin treatment significantly reduced EAT thickness by 19% (p = 0.03). There was a significant 21.6% reduction in EAT glucose uptake during euglycemic hyperinsulinemic clamp in the dapagliflozin group compared with the placebo group (p = 0.014). There were no significant effects on adipose tissue thickness/metabolism in the other depots explored. CONCLUSIONS SGLT-2 inhibition selectively reduces EAT thickness and EAT glucose uptake in T2D patients, suggesting a reduction of EAT inflammation. This could explain the observed increase in myocardial flow reserve, providing new insights into SGLT-2i cardiovascular benefits.
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Affiliation(s)
- Francesca Cinti
- Centro Malattie Endocrine e Metaboliche, Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italy
| | - Lucia Leccisotti
- UOC di Medicina Nucleare, Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italy
| | - Gian Pio Sorice
- Centro Malattie Endocrine e Metaboliche, Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italy
- Sezione di Medicina Interna, Endocrinologia, Andrologia e Malattie Metaboliche, Dipartimento di Medicina di Precisione e Rigenerativa e Area Jonica - (DiMePRe-J), Università Degli Studi di Bari "Aldo Moro", Bari, Italy
| | - Umberto Capece
- Centro Malattie Endocrine e Metaboliche, Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italy
| | - Domenico D'Amario
- Dipartimento di Scienze Cardiovascolari, UOC Di Cardiologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, and Università Cattolica del Sacro Cuore, Rome, Italy
- Università del Piemonte Orientale , Dipartimento Medicina Translazionale, Novara, Italy
| | - Margherita Lorusso
- UOC di Medicina Nucleare, Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italy
| | - Shawn Gugliandolo
- Centro Malattie Endocrine e Metaboliche, Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italy
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Cassandra Morciano
- Centro Malattie Endocrine e Metaboliche, Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italy
- Dipartimento di Scienze Cliniche e Sperimentali, Medicina Interna - Università degli Studi di Brescia, Brescia, BS, Italy
| | - Andrea Guarneri
- UOC di Medicina Nucleare, Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italy
| | - Maria Angela Guzzardi
- Istituto di Fisiologia Clinica, Consiglio Nazionale delle Ricerche (CNR), Pisa, Italy
| | - Teresa Mezza
- Centro Malattie Endocrine e Metaboliche, Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italy
- Pancreas Unit, CEMAD Centro Malattie dell'Apparato Digerente, Medicina Interna e Gastroenterologia, Fondazione Policlinico Universitario Gemelli IRCCS, Rome, Italy
| | - Amedeo Capotosti
- UOSD Fisica Medica e Radioprotezione, Dipartimento di Diagnostica per Immagini, Fondazione Policlinico Universitario A. Gemelli IRCCS, Radioterapia Oncologica ed Ematologia, Rome, Italy
| | - Luca Indovina
- UOSD Fisica Medica e Radioprotezione, Dipartimento di Diagnostica per Immagini, Fondazione Policlinico Universitario A. Gemelli IRCCS, Radioterapia Oncologica ed Ematologia, Rome, Italy
| | - Pietro Manuel Ferraro
- U.O.S. Terapia Conservativa della Malattia Renale Cronica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Patricia Iozzo
- Istituto di Fisiologia Clinica, Consiglio Nazionale delle Ricerche (CNR), Pisa, Italy
| | - Filippo Crea
- Dipartimento di Scienze Cardiovascolari, UOC Di Cardiologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, and Università Cattolica del Sacro Cuore, Rome, Italy
| | - Alessandro Giordano
- UOC di Medicina Nucleare, Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italy.
| | - Andrea Giaccari
- Centro Malattie Endocrine e Metaboliche, Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italy.
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Schena E, Mattioli E, Peres C, Zanotti L, Morselli P, Iozzo P, Guzzardi MA, Bernardini C, Forni M, Nesci S, Caprio M, Cecchetti C, Pagotto U, Gabusi E, Cattini L, Lisignoli G, Blalock W, Gambineri A, Lattanzi G. Mineralocorticoid Receptor Antagonism Prevents Type 2 Familial Partial Lipodystrophy Brown Adipocyte Dysfunction. Cells 2023; 12:2586. [PMID: 37998321 PMCID: PMC10670260 DOI: 10.3390/cells12222586] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 10/29/2023] [Accepted: 11/02/2023] [Indexed: 11/25/2023] Open
Abstract
Type-2 Familial Partial Lipodystrophy (FPLD2), a rare lipodystrophy caused by LMNA mutations, is characterized by a loss of subcutaneous fat from the trunk and limbs and excess accumulation of adipose tissue in the neck and face. Several studies have reported that the mineralocorticoid receptor (MR) plays an essential role in adipose tissue differentiation and functionality. We previously showed that brown preadipocytes isolated from a FPLD2 patient's neck aberrantly differentiate towards the white lineage. As this condition may be related to MR activation, we suspected altered MR dynamics in FPLD2. Despite cytoplasmic MR localization in control brown adipocytes, retention of MR was observed in FPLD2 brown adipocyte nuclei. Moreover, overexpression of wild-type or mutated prelamin A caused GFP-MR recruitment to the nuclear envelope in HEK293 cells, while drug-induced prelamin A co-localized with endogenous MR in human preadipocytes. Based on in silico analysis and in situ protein ligation assays, we could suggest an interaction between prelamin A and MR, which appears to be inhibited by mineralocorticoid receptor antagonism. Importantly, the MR antagonist spironolactone redirected FPLD2 preadipocyte differentiation towards the brown lineage, avoiding the formation of enlarged and dysmorphic lipid droplets. Finally, beneficial effects on brown adipose tissue activity were observed in an FPLD2 patient undergoing spironolactone treatment. These findings identify MR as a new lamin A interactor and a new player in lamin A-linked lipodystrophies.
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Affiliation(s)
- Elisa Schena
- Unit of Bologna, CNR—National Research Council of Italy, Institute of Molecular Genetics “Luigi Luca Cavalli-Sforza”, 40136 Bologna, Italy; (E.S.); (E.M.); (C.P.); (W.B.)
- IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Elisabetta Mattioli
- Unit of Bologna, CNR—National Research Council of Italy, Institute of Molecular Genetics “Luigi Luca Cavalli-Sforza”, 40136 Bologna, Italy; (E.S.); (E.M.); (C.P.); (W.B.)
- IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Chiara Peres
- Unit of Bologna, CNR—National Research Council of Italy, Institute of Molecular Genetics “Luigi Luca Cavalli-Sforza”, 40136 Bologna, Italy; (E.S.); (E.M.); (C.P.); (W.B.)
- IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Laura Zanotti
- Unit of Gynecology and Obstetrics, Division of Endocrinology and Diabetes Prevention and Care, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy; (L.Z.); (C.C.); (U.P.); (A.G.)
- Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum University of Bologna, 40126 Bologna, Italy;
| | - Paolo Morselli
- Plastic Surgery Unit, Department of Specialised, Experimental and Diagnostic Medicine, Alma Mater Studiorum University of Bologna, S. Orsola-Malpighi Hospital, 40126 Bologna, Italy;
| | - Patricia Iozzo
- CNR—National Research Council of Italy, Institute of Clinical Physiology, 56124 Pisa, Italy; (P.I.); (M.A.G.)
| | - Maria Angela Guzzardi
- CNR—National Research Council of Italy, Institute of Clinical Physiology, 56124 Pisa, Italy; (P.I.); (M.A.G.)
| | - Chiara Bernardini
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Ozzano Emilia, Italy; (C.B.); (S.N.)
| | - Monica Forni
- Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum University of Bologna, 40126 Bologna, Italy;
| | - Salvatore Nesci
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Ozzano Emilia, Italy; (C.B.); (S.N.)
| | - Massimiliano Caprio
- Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele, 00163 Rome, Italy;
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166 Rome, Italy
| | - Carolina Cecchetti
- Unit of Gynecology and Obstetrics, Division of Endocrinology and Diabetes Prevention and Care, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy; (L.Z.); (C.C.); (U.P.); (A.G.)
- Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum University of Bologna, 40126 Bologna, Italy;
| | - Uberto Pagotto
- Unit of Gynecology and Obstetrics, Division of Endocrinology and Diabetes Prevention and Care, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy; (L.Z.); (C.C.); (U.P.); (A.G.)
- Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum University of Bologna, 40126 Bologna, Italy;
| | - Elena Gabusi
- SC Laboratorio di Immunoreumatologia e Rigenerazione Tissutale, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (E.G.); (L.C.); (G.L.)
| | - Luca Cattini
- SC Laboratorio di Immunoreumatologia e Rigenerazione Tissutale, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (E.G.); (L.C.); (G.L.)
| | - Gina Lisignoli
- SC Laboratorio di Immunoreumatologia e Rigenerazione Tissutale, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (E.G.); (L.C.); (G.L.)
| | - William Blalock
- Unit of Bologna, CNR—National Research Council of Italy, Institute of Molecular Genetics “Luigi Luca Cavalli-Sforza”, 40136 Bologna, Italy; (E.S.); (E.M.); (C.P.); (W.B.)
- IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Alessandra Gambineri
- Unit of Gynecology and Obstetrics, Division of Endocrinology and Diabetes Prevention and Care, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy; (L.Z.); (C.C.); (U.P.); (A.G.)
- Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum University of Bologna, 40126 Bologna, Italy;
| | - Giovanna Lattanzi
- Unit of Bologna, CNR—National Research Council of Italy, Institute of Molecular Genetics “Luigi Luca Cavalli-Sforza”, 40136 Bologna, Italy; (E.S.); (E.M.); (C.P.); (W.B.)
- IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
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Guzzardi MA, La Rosa F, Granziera F, Panetta D, Pardo-Tendero M, Barone M, Turroni S, Faita F, Kusmic C, Brigidi P, Monleon D, Iozzo P. Gut-derived metabolites mediating cognitive development in 5-year-old children: Early-life transplant in mice has lasting effects throughout adulthood. Brain Behav Immun 2023; 114:94-110. [PMID: 37557963 DOI: 10.1016/j.bbi.2023.08.009] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 08/01/2023] [Accepted: 08/06/2023] [Indexed: 08/11/2023] Open
Abstract
The gut microbiota has been causally linked to cognitive development. We aimed to identify metabolites mediating its effect on cognitive development, and foods or nutrients related to most promising metabolites. Faeces from 5-year-old children (DORIAN-PISAC cohort, including 90 general population families with infants, 42/48 females/males, born in 2011-2014) were transplanted (FMT) into C57BL/6 germ-free mice. Children and recipient mice were stratified by cognitive phenotype, or based on protective metabolites. Food frequency questionnaires were obtained in children. Cognitive measurements in mice included five Y-maze tests until 23 weeks post-FMT, and (at 23 weeks) PET-CT for brain metabolism and radiodensity, and ultrasound-based carotid vascular indices. Children (faeces, urine) and mice (faeces, plasma) metabolome was measured by 1H NMR spectroscopy, and the faecal microbiota was profiled in mice by 16S rRNA amplicon sequencing. Cognitive scores of children and recipient mice were correlated. FMT-dependent modifications of brain metabolism were observed. Mice receiving FMT from high-cognitive or protective metabolite-enriched children developed superior cognitive-behavioural performance. A panel of metabolites, namely xanthine, hypoxanthine, formate, mannose, tyrosine, phenylalanine, glutamine, was found to mediate the gut-cognitive axis in donor children and recipient mice. Vascular indices partially explained the metabolite-to-phenotype relationships. Children's consumption of legumes, whole-milk yogurt and eggs, and intake of iron, zinc and vitamin D appeared to support protective gut metabolites. Overall, metabolites involved in inflammation, purine metabolism and neurotransmitter synthesis mediate the gut-cognitive axis, and holds promise for screening. The related dietary and nutritional findings offer leads to microbiota-targeted interventions for cognitive protection, with long-lasting effects.
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Affiliation(s)
- Maria Angela Guzzardi
- Institute of Clinical Physiology (IFC), National Research Council (CNR), 56124 Pisa, Italy.
| | - Federica La Rosa
- Institute of Clinical Physiology (IFC), National Research Council (CNR), 56124 Pisa, Italy.
| | - Federico Granziera
- Institute of Clinical Physiology (IFC), National Research Council (CNR), 56124 Pisa, Italy; Sant'Anna School of Advanced Studies, 56127 Pisa, Italy.
| | - Daniele Panetta
- Institute of Clinical Physiology (IFC), National Research Council (CNR), 56124 Pisa, Italy.
| | - Mercedes Pardo-Tendero
- Institute of Clinical Physiology (IFC), National Research Council (CNR), 56124 Pisa, Italy; Faculty of Medicine, University of Valencia, Health Research Institute INCLIVA/CIBERFES for Frailty and Healthy Aging, 46010 Valencia, Spain.
| | - Monica Barone
- Microbiomics Unit, Department of Medical and Surgical Sciences, University of Bologna, 40138 Bologna, Italy.
| | - Silvia Turroni
- Unit of Microbiome Science and Biotechnology, Department of Pharmacy and Biotechnology, University of Bologna, 40126 Bologna, Italy.
| | - Francesco Faita
- Institute of Clinical Physiology (IFC), National Research Council (CNR), 56124 Pisa, Italy.
| | - Claudia Kusmic
- Institute of Clinical Physiology (IFC), National Research Council (CNR), 56124 Pisa, Italy.
| | - Patrizia Brigidi
- Microbiomics Unit, Department of Medical and Surgical Sciences, University of Bologna, 40138 Bologna, Italy.
| | - Daniel Monleon
- Faculty of Medicine, University of Valencia, Health Research Institute INCLIVA/CIBERFES for Frailty and Healthy Aging, 46010 Valencia, Spain.
| | - Patricia Iozzo
- Institute of Clinical Physiology (IFC), National Research Council (CNR), 56124 Pisa, Italy.
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4
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Guzzardi MA, La Rosa F, Iozzo P. Trust the gut: outcomes of gut microbiota transplant in metabolic and cognitive disorders. Neurosci Biobehav Rev 2023; 149:105143. [PMID: 36990372 DOI: 10.1016/j.neubiorev.2023.105143] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/21/2023] [Accepted: 03/24/2023] [Indexed: 03/29/2023]
Abstract
Type 2 diabetes mellitus (T2DM) is a main public health concern, with increasing prevalence and growingly premature onset in children, in spite of emerging and successful therapeutic options. T2DM promotes brain aging, and younger age at onset is associated with a higher risk of subsequent dementia. Preventive strategies should address predisposing conditions, like obesity and metabolic syndrome, and be started from very early and even prenatal life. Gut microbiota is an emerging target in obesity, diabetes and neurocognitive diseases, which could be safely modulated since pregnancy and infancy. Many correlative studies have supported its involvement in disease pathophysiology. Faecal material transplantation (FMT) studies have been conducted in clinical and preclinical settings to deliver cause-effect proof and mechanistic insights. This review provides a comprehensive overview of studies in which FMT was used to cure or cause obesity, metabolic syndrome, T2DM, cognitive decline and Alzheimer's disease, including the evidence available in early life. Findings were analysed to dissect consolidated from controversial results, highlighting gaps and possible future directions.
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Affiliation(s)
- Maria Angela Guzzardi
- Institute of Clinical Physiology (IFC), the National Research Council (CNR), via Moruzzi 1, 56124 Pisa, Italy.
| | - Federica La Rosa
- Institute of Clinical Physiology (IFC), the National Research Council (CNR), via Moruzzi 1, 56124 Pisa, Italy.
| | - Patricia Iozzo
- Institute of Clinical Physiology (IFC), the National Research Council (CNR), via Moruzzi 1, 56124 Pisa, Italy.
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Panetta D, Guzzardi MA, La Rosa F, Granziera F, Terlizzi D, Kusmic C, Iozzo P. High-Resolution Cardiac Positron Emission Tomography/Computed Tomography for Small Animals. J Vis Exp 2022. [PMID: 36591981 DOI: 10.3791/64066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Positron emission tomography (PET) and computed tomography (CT) are among the most employed diagnostic imaging techniques, and both serve in understanding cardiac function and metabolism. In preclinical research, dedicated scanners with high sensitivity and high spatio-temporal resolution are employed, designed to cope with the demanding technological requirements posed by the small heart size and very high heart rates of mice and rats. In this paper, a bimodal cardiac PET/CT imaging protocol for experimental mouse and/or rat models of cardiac diseases is described, from animal preparation and image acquisition and reconstruction to image processing and visualization. In particular, the 18F-labeled fluorodeoxyglucose ([18F]FDG)-PET scan allows for the measurement and visualization of glucose metabolism in the different segments of the left ventricle (LV). Polar maps are convenient tools to display this information. The CT part consists of a time-resolved 3D reconstruction of the entire heart (4D-CT) using retrospective gating without electrocardiography (ECG) leads, allowing the morphofunctional evaluation of the LV and the subsequent quantification of the most important cardiac function parameters, such as ejection fraction (EF) and stroke volume (SV). Using an integrated PET/CT scanner, this protocol can be executed within the same anesthesia induction without the need to reposition the animal between different scanners. Hence, PET/CT can be seen as a comprehensive tool for the morphofunctional and metabolic evaluation of the heart in several small animal models of cardiac diseases.
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Affiliation(s)
| | | | | | - Federico Granziera
- CNR Institute of Clinical Physiology; Sant'Anna School of Advanced Studies
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D'Amario D, Leccisotti L, Cinti F, Sorice GP, Lorusso M, Guzzardi MA, Mezza T, Cocchi C, Capece U, Indovina L, Ferraro PM, Iozzo P, Giordano A, Giaccari A, Crea F. Dapagliflozin improves Myocardial Flow Reserve in patients with Type 2 Diabetes: the DAPAHEART Trial. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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] [Indexed: 11/13/2022] Open
Abstract
Abstract
Objective
Cardiovascular (CV) outcome trials have shown that in patients with type 2 diabetes (T2D), treatment with sodium-glucose cotransporter-2 inhibitors (SGLT-2i) reduces CV mortality and admission rates for heart failure (HF). However, the mechanisms behind these benefits are not fully understood. This study was performed to investigate the effects of the SGLT-2i dapagliflozin on whole body insulin sensitivity, myocardial perfusion, and metabolism in patients with T2D without HF.
Research design and methods
This was a single-center, prospective, randomized, double-blind controlled clinical trial including 16 patients with T2D randomized to SGLT-2i dapagliflozin (10 mg) or placebo. Whole body glucose uptake (WBGU) and myocardial glucose uptake (MGU) were measured with PET/CT with FDG during euglycemic hyperinsulinemic clamp. Stress (i.v. adenosine infusion) and resting myocardial blood flow (MBF) and myocardial flow reserve (MFR) were calculated by PET/CT with 13N-ammonia.
Results
16 patients were randomized (8 dapagliflozin; 8 placebo). The groups were well-matched for baseline characteristics (age, diabetes duration, HbA1c, renal and heart function). Dapagliflozin significantly improved MFR (2.56±0.26 vs 3.59±0.35) compared with placebo group (2.34±0.21 vs 2.38±0.24; p for interaction =0.001) and was associated to a reduction of resting MBF corrected for cardiac workload (p=0.045). A trend toward an increase in stress MBF was also detected (p=0.058). Moreover, in dapagliflozin group we observed an increase of WBGU of borderline statistical significance (p=0.06) and no effects on MGU (p=0.41).
Conclusions
At the best of our knowledge, our study, for the first time, demonstrated that SGLT-2 inhibition increases MFR in T2D patients. The data presented provide a new potential explanation of cardiovascular benefits with SGLT-2i as they make patients more tolerant to the detrimental impact of obstructive coronary atherosclerosis on MFR.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- D D'Amario
- Fondazione Policlinico Universitario A. Gemelli IRCSS , Rome , Italy
| | - L Leccisotti
- Fondazione Policlinico Universitario A. Gemelli IRCSS , Rome , Italy
| | - F Cinti
- Fondazione Policlinico Universitario A. Gemelli IRCSS , Rome , Italy
| | - G P Sorice
- Fondazione Policlinico Universitario A. Gemelli IRCSS , Rome , Italy
| | - M Lorusso
- Fondazione Policlinico Universitario A. Gemelli IRCSS , Rome , Italy
| | - M A Guzzardi
- Fondazione Policlinico Universitario A. Gemelli IRCSS , Rome , Italy
| | - T Mezza
- Fondazione Policlinico Universitario A. Gemelli IRCSS , Rome , Italy
| | - C Cocchi
- Fondazione Policlinico Universitario A. Gemelli IRCSS , Rome , Italy
| | - U Capece
- Fondazione Policlinico Universitario A. Gemelli IRCSS , Rome , Italy
| | - L Indovina
- Fondazione Policlinico Universitario A. Gemelli IRCSS , Rome , Italy
| | - P M Ferraro
- Fondazione Policlinico Universitario A. Gemelli IRCSS , Rome , Italy
| | - P Iozzo
- CNR – National Research Council , Pisa , Italy
| | - A Giordano
- Fondazione Policlinico Universitario A. Gemelli IRCSS , Rome , Italy
| | - A Giaccari
- Fondazione Policlinico Universitario A. Gemelli IRCSS , Rome , Italy
| | - F Crea
- Fondazione Policlinico Universitario A. Gemelli IRCSS , Rome , Italy
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7
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Leccisotti L, Cinti F, Sorice GP, D'Amario D, Lorusso M, Guzzardi MA, Mezza T, Gugliandolo S, Cocchi C, Capece U, Indovina L, Ferraro PM, Iozzo P, Crea F, Giordano A, Giaccari A. Dapagliflozin improves myocardial flow reserve in patients with type 2 diabetes: the DAPAHEART Trial: a preliminary report. Cardiovasc Diabetol 2022; 21:173. [PMID: 36057768 PMCID: PMC9440459 DOI: 10.1186/s12933-022-01607-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 08/22/2022] [Indexed: 11/21/2022] Open
Abstract
Objective Cardiovascular (CV) outcome trials have shown that in patients with type 2 diabetes (T2D), treatment with sodium-glucose cotransporter-2 inhibitors (SGLT-2i) reduces CV mortality and hospital admission rates for heart failure (HF). However, the mechanisms behind these benefits are not fully understood. This study was performed to investigate the effects of the SGLT-2i dapagliflozin on myocardial perfusion and glucose metabolism in patients with T2D and stable coronary artery disease (coronary stenosis ≥ 30% and < 80%), with or without previous percutaneous coronary intervention (> 6 months) but no HF. Methods This was a single-center, prospective, randomized, double-blind, controlled clinical trial including 16 patients with T2D randomized to SGLT-2i dapagliflozin (10 mg daily) or placebo. The primary outcome was to detect changes in myocardial glucose uptake (MGU) from baseline to 4 weeks after treatment initiation by [(18)F]2-deoxy-2-fluoro-D-glucose (FDG) PET/CT during hyperinsulinemic euglycemic clamp. The main secondary outcome was to assess whether the hypothetical changes in MGU were associated with changes in myocardial blood flow (MBF) and myocardial flow reserve (MFR) measured by 13N-ammonia PET/CT. The study was registered at eudract.ema.europa.eu (EudraCT No. 2016-003614-27) and ClinicalTrials.gov (NCT 03313752). Results 16 patients were randomized to dapagliflozin (n = 8) or placebo (n = 8). The groups were well-matched for baseline characteristics (age, diabetes duration, HbA1c, renal and heart function). There was no significant change in MGU during euglycemic hyperinsulinemic clamp in the dapagliflozin group (2.22 ± 0.59 vs 1.92 ± 0.42 μmol/100 g/min, p = 0.41) compared with the placebo group (2.00 ± 0.55 vs 1.60 ± 0.45 μmol/100 g/min, p = 0.5). Dapagliflozin significantly improved MFR (2.56 ± 0.26 vs 3.59 ± 0.35 p = 0.006 compared with the placebo group 2.34 ± 0.21 vs 2.38 ± 0.24 p = 0.81; pint = 0.001) associated with a reduction in resting MBF corrected for cardiac workload (p = 0.005; pint = 0.045). A trend toward an increase in stress MBF was also detected (p = 0.054). Conclusions SGLT-2 inhibition increases MFR in T2D patients. We provide new insight into SGLT-2i CV benefits, as our data show that patients on SGLT-2i are more resistant to the detrimental effects of obstructive coronary atherosclerosis due to increased MFR, probably caused by an improvement in coronary microvascular dysfunction. Trial registration EudraCT No. 2016-003614-27; ClinicalTrials.gov Identifier: NCT03313752 Supplementary Information The online version contains supplementary material available at 10.1186/s12933-022-01607-4.
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Affiliation(s)
- Lucia Leccisotti
- UOC Di Medicina Nucleare, Dipartimento Di Diagnostica Per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italia
| | - Francesca Cinti
- Centro Malattie Endocrine E Metaboliche, Dipartimento Di Scienze Mediche E Chirurgiche, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italia
| | - Gian Pio Sorice
- Centro Malattie Endocrine E Metaboliche, Dipartimento Di Scienze Mediche E Chirurgiche, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italia.,Sezione Di Medicina Interna, Endocrinologia, Andrologia e Malattie Metaboliche, Dipartimento Dell'Emergenza E Dei Trapianti Di Organi (D.E.T.O.), Università Degli Studi Di Bari "Aldo Moro", Bari, Italia
| | - Domenico D'Amario
- UOC Di Cardiologia, Dipartimento Di Scienze Cardiovascolari, Fondazione Policlinico Universitario A. Gemelli IRCCS, and Università Cattolica del Sacro Cuore, Rome, Italia
| | - Margherita Lorusso
- UOC Di Medicina Nucleare, Dipartimento Di Diagnostica Per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italia
| | - Maria Angela Guzzardi
- Istituto Di Fisiologia Clinica, Consiglio Nazionale Delle Ricerche (CNR), Pisa, Italia
| | - Teresa Mezza
- Centro Malattie Endocrine E Metaboliche, Dipartimento Di Scienze Mediche E Chirurgiche, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italia
| | - Shawn Gugliandolo
- Centro Malattie Endocrine E Metaboliche, Dipartimento Di Scienze Mediche E Chirurgiche, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italia
| | - Camilla Cocchi
- Centro Malattie Endocrine E Metaboliche, Dipartimento Di Scienze Mediche E Chirurgiche, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italia
| | - Umberto Capece
- Centro Malattie Endocrine E Metaboliche, Dipartimento Di Scienze Mediche E Chirurgiche, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italia
| | - Luca Indovina
- UOSD Fisica Medica E Radioprotezione, Dipartimento Di Diagnostica Per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italia
| | - Pietro Manuel Ferraro
- U.O.S. Terapia Conservativa Della Malattia Renale Cronica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Patricia Iozzo
- Istituto Di Fisiologia Clinica, Consiglio Nazionale Delle Ricerche (CNR), Pisa, Italia
| | - Filippo Crea
- UOC Di Cardiologia, Dipartimento Di Scienze Cardiovascolari, Fondazione Policlinico Universitario A. Gemelli IRCCS, and Università Cattolica del Sacro Cuore, Rome, Italia
| | - Alessandro Giordano
- UOC Di Medicina Nucleare, Dipartimento Di Diagnostica Per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italia.
| | - Andrea Giaccari
- Centro Malattie Endocrine E Metaboliche, Dipartimento Di Scienze Mediche E Chirurgiche, Fondazione Policlinico Universitario A. Gemelli IRCCS and Università Cattolica del Sacro Cuore, Rome, Italia.
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Guzzardi MA, Collado MC, Panetta D, Tripodi M, Iozzo P. Maternal High-Fat Diet Programs White and Brown Adipose Tissues In Vivo in Mice, with Different Metabolic and Microbiota Patterns in Obesity-Susceptible or Obesity-Resistant Offspring. Metabolites 2022; 12:metabo12090828. [PMID: 36144232 PMCID: PMC9503350 DOI: 10.3390/metabo12090828] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/24/2022] [Accepted: 08/25/2022] [Indexed: 11/16/2022] Open
Abstract
Maternal obesity causes metabolic dysfunction in the offspring, including dysbiosis, overeating, obesity, and type 2 diabetes. Early-life phases are fundamental for developing subcutaneous (SAT) and brown adipose tissues (BAT), handling energy excesses. Imaging of 18F-fluorodeoxyglucose by positron emission tomography (PET) and radiodensity by computerized tomography (CT) allows assessing adipose tissue (AT) whitening and browning in vivo and the underlying metabolic efficiency. Our aim was to examine these in vivo traits in SAT and BAT concerning gut microbiota composition in 1- and 6-month-old mice born to normal (NDoff) and high-fat diet-fed dams (HFDoff), accounting for body weight responses. We found low radiodensity (high lipids) in HFDoff SAT at 1 month, relating to an increased abundance of Dorea genus in the caecum and activation of the fatty acid biosynthetic pathway. Instead, low BAT radiodensity and glucose uptake were seen in adult HFDoff. Glucose was shifted in favor of BAT at 1 month and SAT at 6 months. In adults, unclassified Enterococcaceae and Rikenellaceae, and Bacillus genera were negatively related to BAT, whereas unclassified Clostridiales genera were related to SAT metabolism. Stratification of HFDoff based on weight-response, namely maternal induced obesity (MIO-HFDoff) or obesity-resistant (MIOR-HFDoff), showed sex dimorphism. Both subgroups were hyperphagic, but only obese mice had hyper-leptinemia and hyper-resistinemia, together with BAT dysfunction, whereas non-obese HFDoff had hyperglycemia and SAT hypermetabolism. In the caecum, unclassified Rikenellaceae (10-fold enrichment in MIO-HFDoff) and Clostridiales genera (4-fold deficiency in MIOR-HFDoff) were important discriminators of these two phenotypes. In conclusion, SAT whitening is an early abnormality in the offspring of HFD dams. In adult life, maternal HFD and the induced excessive food intake translates into a dimorphic phenotype involving SAT, BAT, and microbiota distinctively, reflecting maternal diet*sex interaction. This helps explain inter-individual variability in fetal programming and the higher rates of type 2 diabetes observed in adult women born to obese mothers, supporting personalized risk assessment, prevention, and treatment.
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Affiliation(s)
- Maria Angela Guzzardi
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy
| | - Maria Carmen Collado
- Institute of Agrochemistry and Food Technology, National Research Council (IATA-CSIC), 46980 Valencia, Spain
| | - Daniele Panetta
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy
| | - Maria Tripodi
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy
| | - Patricia Iozzo
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy
- Correspondence: ; Tel.: +39-050-3152789
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Guzzardi MA, La Rosa F, Campani D, Collado MC, Monleon D, Cacciato Insilla A, Tripodi M, Zega A, Dattilo A, Brunetto MR, Maffei M, Bonino F, Iozzo P. Liver and White/Brown Fat Dystrophy Associates with Gut Microbiota and Metabolomic Alterations in 3xTg Alzheimer’s Disease Mouse Model. Metabolites 2022; 12:metabo12040278. [PMID: 35448465 PMCID: PMC9028874 DOI: 10.3390/metabo12040278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 03/03/2022] [Revised: 03/16/2022] [Accepted: 03/18/2022] [Indexed: 02/04/2023] Open
Abstract
Metabolic impairments and liver and adipose depots alterations were reported in subjects with Alzheimer’s disease (AD), highlighting the role of the liver–adipose–tissue–brain axis in AD pathophysiology. The gut microbiota might play a modulating role. We investigated the alterations to the liver and white/brown adipose tissues (W/BAT) and their relationships with serum and gut metabolites and gut bacteria in a 3xTg mouse model during AD onset (adulthood) and progression (aging) and the impact of high-fat diet (HFD) and intranasal insulin (INI). Glucose metabolism (18FDG-PET), tissue radiodensity (CT), liver and W/BAT histology, BAT-thermogenic markers were analyzed. 16S-RNA sequencing and mass-spectrometry were performed in adult (8 months) and aged (14 months) 3xTg-AD mice with a high-fat or control diet. Generalized and HFD resistant deficiency of lipid accumulation in both liver and W/BAT, hypermetabolism in WAT (adulthood) and BAT (aging), abnormal cytokine–hormone profiles, and liver inflammation were observed in 3xTg mice; INI could antagonize all these alterations. Specific gut microbiota–metabolome profiles correlated with a significant disruption of the gut–microbiota–liver–adipose axis in AD mice. In conclusion, fat dystrophy in liver and adipose depots contributes to AD progression, and associates with altered profiles of the gut microbiota, which candidates as an appealing early target for preventive intervention.
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Affiliation(s)
- Maria Angela Guzzardi
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy; (F.L.R.); (M.T.); (A.Z.); (M.M.); (P.I.)
- Correspondence: ; Tel.: +39-050-3152722
| | - Federica La Rosa
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy; (F.L.R.); (M.T.); (A.Z.); (M.M.); (P.I.)
| | - Daniela Campani
- Department of Surgical, Medical, Molecular Pathology and Critical Care Medicine, Division of Pathology, Pisa University Hospital, 56124 Pisa, Italy; (D.C.); (A.C.I.)
| | - Maria Carmen Collado
- Institute of Agrochemistry and Food Technology-National Research Council (IATA-CSIC), 46980 Valencia, Spain;
| | - Daniel Monleon
- Faculty of Medicine, Health Research Institute INCLIVA/CIBERFES for Frailty and Healthy Aging, University of Valencia, 46003 Valencia, Spain;
| | - Andrea Cacciato Insilla
- Department of Surgical, Medical, Molecular Pathology and Critical Care Medicine, Division of Pathology, Pisa University Hospital, 56124 Pisa, Italy; (D.C.); (A.C.I.)
| | - Maria Tripodi
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy; (F.L.R.); (M.T.); (A.Z.); (M.M.); (P.I.)
| | - Alessandro Zega
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy; (F.L.R.); (M.T.); (A.Z.); (M.M.); (P.I.)
| | | | - Maurizia Rossana Brunetto
- Department of Clinical and Experimental Medicine, University of Pisa, 56124 Pisa, Italy;
- Hepatology Unit, Department of Medical Specialties, Laboratory of Molecular Genetics and Pathology of Hepatitis Viruses, Pisa University Hospital, 56124 Pisa, Italy
- Institute of Biostructure and Bioimaging (IBB), National Research Council (CNR), 80145 Napoli, Italy;
| | - Margherita Maffei
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy; (F.L.R.); (M.T.); (A.Z.); (M.M.); (P.I.)
| | - Ferruccio Bonino
- Institute of Biostructure and Bioimaging (IBB), National Research Council (CNR), 80145 Napoli, Italy;
| | - Patricia Iozzo
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy; (F.L.R.); (M.T.); (A.Z.); (M.M.); (P.I.)
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Guzzardi MA, La Rosa F, Campani D, Cacciato Insilla A, Nannipieri M, Brunetto MR, Bonino F, Iozzo P. Evidence of a Gastro-Duodenal Effect on Adipose Tissue and Brain Metabolism, Potentially Mediated by Gut-Liver Inflammation: A Study with Positron Emission Tomography and Oral 18FDG in Mice. Int J Mol Sci 2022; 23:ijms23052659. [PMID: 35269799 PMCID: PMC8910830 DOI: 10.3390/ijms23052659] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/17/2022] [Accepted: 02/22/2022] [Indexed: 02/07/2023] Open
Abstract
Interventions affecting gastrointestinal (GI) physiology suggest that the GI tract plays an important role in modulating the uptake of ingested glucose by body tissues. We aimed at validating the use of positron emission tomography (PET) with oral 18FDG administration in mice, and to examine GI effects on glucose metabolism in adipose tissues, brain, heart, muscle, and liver, and interfering actions of oral lipid co-administration. We performed sequential whole-body PET studies in 3 groups of 10 mice, receiving i.p. glucose and 18FDG or oral glucose and 18FDG ± lipids, to measure tissue glucose uptake (GU) and GI transit, and compute the absorption lumped constant (LCa) as ratio of oral 18FDG-to-glucose incremental blood levels. GI and liver histology and circulating hormones were tested to generate explanatory hypothesis. Median LCa was 1.18, constant over time and not significantly affected by lipid co-ingestion. Compared to the i.p. route, the oral route (GI effect) resulted in lower GU rates in adipose tissues and brain, and a greater steatohepatitis score (+17%, p = 0.03). Lipid co-administration accelerated GI transit, in relation to the suppression in GIP, GLP1, glucagon, PP, and PYY (GI motility regulators), abolishing GI effects on subcutaneous fat GU. Duodenal crypt size, gastric wall 18FDG uptake, and macro-vesicular steatosis were inversely related to adipose tissue GU, and positively associated with liver GU. We conclude that 18FDG-PET is a suitable tool to examine the role of the GI tract on glucose transit, absorption, and bio-distribution. The GI effect consists in the suppression of glucose metabolism selectively in organs responsible for energy intake and storage, and is blunted by lipid ingestion. Modulation of gut and liver inflammation, as reflected by high GU, may be involved in the acute signalling of the energy status.
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Affiliation(s)
- Maria Angela Guzzardi
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy; (M.A.G.); (F.L.R.)
| | - Federica La Rosa
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy; (M.A.G.); (F.L.R.)
| | - Daniela Campani
- Department of Surgical, Medical, Molecular Pathology and Critical Care Medicine, Division of Pathology, Pisa University Hospital, 56124 Pisa, Italy; (D.C.); (A.C.I.)
| | - Andrea Cacciato Insilla
- Department of Surgical, Medical, Molecular Pathology and Critical Care Medicine, Division of Pathology, Pisa University Hospital, 56124 Pisa, Italy; (D.C.); (A.C.I.)
| | - Monica Nannipieri
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (M.N.); (M.R.B.)
| | - Maurizia Rossana Brunetto
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (M.N.); (M.R.B.)
- Hepatology Unit, Department of Medical Specialties, Laboratory of Molecular Genetics and Pathology of Hepatitis Viruses, Pisa University Hospital, 56124 Pisa, Italy
- Institute of Biostructure and Bioimaging (IBB), National Research Council (CNR), 80145 Napoli, Italy;
| | - Ferruccio Bonino
- Institute of Biostructure and Bioimaging (IBB), National Research Council (CNR), 80145 Napoli, Italy;
| | - Patricia Iozzo
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy; (M.A.G.); (F.L.R.)
- Correspondence:
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Guzzardi MA, Ederveen THA, Rizzo F, Weisz A, Collado MC, Muratori F, Gross G, Alkema W, Iozzo P. Maternal pre-pregnancy overweight and neonatal gut bacterial colonization are associated with cognitive development and gut microbiota composition in pre-school-age offspring. Brain Behav Immun 2022; 100:311-320. [PMID: 34920092 DOI: 10.1016/j.bbi.2021.12.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 11/03/2021] [Accepted: 12/11/2021] [Indexed: 12/17/2022] Open
Abstract
Maternal gestational obesity is a risk factor for offspring's neurodevelopment and later neuro-cognitive disorders. Altered gut microbiota composition has been found in patients with neurocognitive disorders, and in relation to maternal metabolic health. We explored the associations between gut microbiota and cognitive development during infancy, and their link with maternal obesity. In groups of children from the Pisa birth Cohort (PISAC), we analysed faecal microbiota composition by 16S rRNA marker gene sequencing of first-pass meconium samples and of faecal samples collected at age 3, 6, 12, 24, 36 months, and its relationship with maternal gestational obesity or diabetes, and with cognitive development, as measured from 6 to 60 months of age by the Griffith's Mental Development Scales. Gut microbiota composition in the first phases of life is dominated by Bifidobacteria (Actinobacteria phylum), with contribution of Escherichia/Shigella and Klebsiella genera (Proteobacteria phylum), whereas Firmicutes become more dominant at 36 months of age. Maternal overweight leads to lower abundance of Bifidobacterium, Blautia and Ruminococcus, and lower practical reasoning scores in the offspring at the age of 36 months. In the whole population, microbiota in the first-pass meconium samples shows much higher alpha diversity compared to later samples, and its composition, particularly Bifidobacterium and Veillonella abundances, correlates with practical reasoning scores at 60 months of age. Maternal overweight correlates with bacterial colonization and with the development of reasoning skills at pre-school age. Associations between neonatal gut colonization and later cognitive function provide new perspectives of primary (antenatal) prevention of neurodevelopmental disorders.
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Affiliation(s)
- Maria Angela Guzzardi
- Institute of Clinical Physiology (IFC), National Research Council (CNR), Pisa, Italy.
| | - Thomas H A Ederveen
- Center for Molecular and Biomolecular Informatics (CMBI), Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center (Radboudumc), Nijmegen, the Netherlands.
| | - Francesca Rizzo
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana, University of Salerno, Baronissi, SA, Italy; Genome Research Center for Health (CRGS), Baronissi, SA, Italy.
| | - Alessandro Weisz
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana, University of Salerno, Baronissi, SA, Italy; Genome Research Center for Health (CRGS), Baronissi, SA, Italy.
| | - Maria Carmen Collado
- Institute of Agrochemistry and Food Technology, National Research Council (IATA-CSIC), Valencia, Spain.
| | | | - Gabriele Gross
- Medical and Scientific Affairs, Nutrition, RB Mead Johnson Nutrition Institute, Nijmegen, the Netherlands.
| | - Wynand Alkema
- Center for Molecular and Biomolecular Informatics (CMBI), Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center (Radboudumc), Nijmegen, the Netherlands.
| | - Patricia Iozzo
- Institute of Clinical Physiology (IFC), National Research Council (CNR), Pisa, Italy.
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Granziera F, Guzzardi MA, Iozzo P. Associations between the Mediterranean Diet Pattern and Weight Status and Cognitive Development in Preschool Children. Nutrients 2021; 13:nu13113723. [PMID: 34835979 PMCID: PMC8624841 DOI: 10.3390/nu13113723] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 10/09/2021] [Accepted: 10/17/2021] [Indexed: 11/16/2022] Open
Abstract
Cognitive dysfunctions are a global health concern. Early-life diet and weight status may contribute to children’s cognitive development. For this reason, we explored the associations between habitual food consumption, body mass index (BMI) and cognitive outcomes in 54 preschool children belonging to the Pisa birth Cohort (PISAC). We estimated groups of foods, nutrients and calorie intakes through a food frequency questionnaire (FFQ) and Italian national databases. Then, we adopted the Mediterranean diet (MD) score to assess relative MD adherence. Cognition was examined using the Griffiths Mental Development Scales-Extended Revised (GMDS-ER). We found that higher, compared to low and moderate, adherence to MD was associated with higher performance scores. Furthermore, white meat consumption was positively related to BMI, and BMI (age–gender specific, z-scores) categories were negatively related to practical reasoning scores. All associations were independent of maternal IQ estimates, parents’ socioeconomic status, exclusive/non-exclusive breastfeeding, actual age at cognitive assessment and gender. In conclusion, in preschool children, very high adherence to MD seemed protective, whereas BMI (reinforced by the intake of white meat) was negatively associated with cognition.
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Affiliation(s)
- Federico Granziera
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy; (F.G.); (P.I.)
- Sant’Anna School of Advanced Studies, 56127 Pisa, Italy
| | - Maria Angela Guzzardi
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy; (F.G.); (P.I.)
- Correspondence: ; Tel.: +39-050-3152789
| | - Patricia Iozzo
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy; (F.G.); (P.I.)
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Guzzardi MA, La Rosa F, Campani D, Cacciato Insilla A, De Sena V, Panetta D, Brunetto MR, Bonino F, Collado MC, Iozzo P. Maturation of the Visceral (Gut-Adipose-Liver) Network in Response to the Weaning Reaction versus Adult Age and Impact of Maternal High-Fat Diet. Nutrients 2021; 13:nu13103438. [PMID: 34684436 PMCID: PMC8541006 DOI: 10.3390/nu13103438] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/23/2021] [Accepted: 09/26/2021] [Indexed: 01/01/2023] Open
Abstract
Metabolic-associated fatty liver disease is a major cause of chronic pathologies, of which maternal obesity is a frequent risk factor. Gut wall and microbiota, visceral fat, and liver form a pre-systemic network for substrates and pro-inflammatory factors entering the body, undergoing accelerated maturation in early-life when the weaning reaction, i.e., a transitory inflammatory condition, affects lifelong health. We aimed to characterize organ metabolism in the above network, in relation to weaning reaction and maternal obesity. Weaning or 6-months-old offspring of high-fat-diet and normal-diet fed dams underwent in vivo imaging of pre-/post-systemic glucose uptake and tissue radiodensity in the liver, visceral fat, and intestine, a liver histology, and microbiota and metabolic pathway analyses. Weaning mice showed the dominance of gut Clostridia and Bacteroidia members, overexpressing pathways of tissue replication and inflammation; adulthood increased proneness to steatohepatitis, and Desulfovibrio and RF39 bacteria, and lipopolysaccharide, bile acid, glycosaminoglycan, and sphingolipid metabolic pathways. In vivo imaging could track organ maturation, liver inflammation, and protective responses. A maternal high-fat diet amplified the weaning reaction, elevating liver glucose uptake, triglyceride levels, and steatohepatitis susceptibility along the lifespan. The visceral network establishes a balance between metabolism and inflammation, with clear imaging biomarkers, and crucial modulation in the weaning time window.
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Affiliation(s)
- Maria Angela Guzzardi
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy; (M.A.G.); (F.L.R.); (V.D.S.); (D.P.)
| | - Federica La Rosa
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy; (M.A.G.); (F.L.R.); (V.D.S.); (D.P.)
| | - Daniela Campani
- Department of Surgical, Medical, Molecular Pathology and Critical Care Medicine, Division of Pathology, Pisa University Hospital, 56124 Pisa, Italy; (D.C.); (A.C.I.)
| | - Andrea Cacciato Insilla
- Department of Surgical, Medical, Molecular Pathology and Critical Care Medicine, Division of Pathology, Pisa University Hospital, 56124 Pisa, Italy; (D.C.); (A.C.I.)
| | - Vincenzo De Sena
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy; (M.A.G.); (F.L.R.); (V.D.S.); (D.P.)
| | - Daniele Panetta
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy; (M.A.G.); (F.L.R.); (V.D.S.); (D.P.)
| | - Maurizia Rossana Brunetto
- Department of Clinical and Experimental Medicine, University of Pisa, 56124 Pisa, Italy;
- Department of Medical Specialties and Hepatology Unit and Laboratory of Molecular Genetics and Pathology of Hepatitis Viruses, Pisa University Hospital, 56124 Pisa, Italy
- Institute of Biostructure and Bioimaging (IBB), National Research Council (CNR), 80145 Napoli, Italy;
| | - Ferruccio Bonino
- Institute of Biostructure and Bioimaging (IBB), National Research Council (CNR), 80145 Napoli, Italy;
| | - Maria Carmen Collado
- Institute of Agrochemistry and Food Technology-National Research Council (IATA-CSIC), 46980 Valencia, Spain;
| | - Patricia Iozzo
- Institute of Clinical Physiology, National Research Council (CNR), 56124 Pisa, Italy; (M.A.G.); (F.L.R.); (V.D.S.); (D.P.)
- Correspondence: ; Tel.: +39-050-315-2789
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14
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Pinart M, Nimptsch K, Forslund SK, Schlicht K, Gueimonde M, Brigidi P, Turroni S, Ahrens W, Hebestreit A, Wolters M, Dötsch A, Nöthlings U, Oluwagbemigun K, Cuadrat RRC, Schulze MB, Standl M, Schloter M, De Angelis M, Iozzo P, Guzzardi MA, Vlaemynck G, Penders J, Jonkers DMAE, Stemmer M, Chiesa G, Cavalieri D, De Filippo C, Ercolini D, De Filippis F, Ribet D, Achamrah N, Tavolacci MP, Déchelotte P, Bouwman J, Laudes M, Pischon T. Identification and Characterization of Human Observational Studies in Nutritional Epidemiology on Gut Microbiomics for Joint Data Analysis. Nutrients 2021; 13:nu13093292. [PMID: 34579168 PMCID: PMC8466729 DOI: 10.3390/nu13093292] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 09/10/2021] [Accepted: 09/17/2021] [Indexed: 01/16/2023] Open
Abstract
In any research field, data access and data integration are major challenges that even large, well-established consortia face. Although data sharing initiatives are increasing, joint data analyses on nutrition and microbiomics in health and disease are still scarce. We aimed to identify observational studies with data on nutrition and gut microbiome composition from the Intestinal Microbiomics (INTIMIC) Knowledge Platform following the findable, accessible, interoperable, and reusable (FAIR) principles. An adapted template from the European Nutritional Phenotype Assessment and Data Sharing Initiative (ENPADASI) consortium was used to collect microbiome-specific information and other related factors. In total, 23 studies (17 longitudinal and 6 cross-sectional) were identified from Italy (7), Germany (6), Netherlands (3), Spain (2), Belgium (1), and France (1) or multiple countries (3). Of these, 21 studies collected information on both dietary intake (24 h dietary recall, food frequency questionnaire (FFQ), or Food Records) and gut microbiome. All studies collected stool samples. The most often used sequencing platform was Illumina MiSeq, and the preferred hypervariable regions of the 16S rRNA gene were V3–V4 or V4. The combination of datasets will allow for sufficiently powered investigations to increase the knowledge and understanding of the relationship between food and gut microbiome in health and disease.
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Affiliation(s)
- Mariona Pinart
- Molecular Epidemiology Research Group, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin, Germany; (M.P.); (T.P.)
| | - Katharina Nimptsch
- Molecular Epidemiology Research Group, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin, Germany; (M.P.); (T.P.)
- Correspondence: ; Tel.: +49-30-9046-4573
| | - Sofia K. Forslund
- Experimental and Clinical Research Center, A Cooperation of Charité-Universitätsmedizin Berlin and Max Delbrück Center for Molecular Medicine, Lindenberger Weg 80, 13125 Berlin, Germany;
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, 10117 Berlin, Germany
- Host-Microbiome Factors in Cardiovascular Disease Lab, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin, Germany
- German Centre for Cardiovascular Research (DZHK), Partner Site Berlin, 10785 Berlin, Germany
- Berlin Institute of Health (BIH), 10178 Berlin, Germany
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | - Kristina Schlicht
- Institute of Diabetes and Clinical Metabolic Research, University of Kiel, 24105 Kiel, Germany; (K.S.); (M.L.)
| | - Miguel Gueimonde
- Department of Microbiology and Biochemistry of Dairy Products, IPLA-CSIC, 33300 Villaviciosa, Spain;
- Diet, Microbiota and Health Group, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
| | - Patrizia Brigidi
- Department of Medical and Surgical Sciences, University of Bologna, Via Massarenti 9, 40138 Bologna, Italy;
| | - Silvia Turroni
- Department of Pharmacy and Biotechnology, University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy;
| | - Wolfgang Ahrens
- Leibniz Institute for Prevention Research and Epidemiology-BIPS, 28359 Bremen, Germany; (W.A.); (A.H.); (M.W.)
- Institute of Statistics, Bremen University, 28359 Bremen, Germany
| | - Antje Hebestreit
- Leibniz Institute for Prevention Research and Epidemiology-BIPS, 28359 Bremen, Germany; (W.A.); (A.H.); (M.W.)
| | - Maike Wolters
- Leibniz Institute for Prevention Research and Epidemiology-BIPS, 28359 Bremen, Germany; (W.A.); (A.H.); (M.W.)
| | - Andreas Dötsch
- Department of Physiology and Biochemistry of Nutrition, Max Rubner-Institut (MRI)-Federal Research Institute of Nutrition and Food, 76131 Karlsruhe, Germany;
| | - Ute Nöthlings
- Nutritional Epidemiology Unit, Institute of Nutrition and Food Sciences, University of Bonn, 53115 Bonn, Germany; (U.N.); (K.O.)
| | - Kolade Oluwagbemigun
- Nutritional Epidemiology Unit, Institute of Nutrition and Food Sciences, University of Bonn, 53115 Bonn, Germany; (U.N.); (K.O.)
| | - Rafael R. C. Cuadrat
- Department of Molecular Epidemiology, German Institute of Human Nutrition Potsdam-Rehbruecke, 14558 Nuthetal, Germany; (R.R.C.C.); (M.B.S.)
| | - Matthias B. Schulze
- Department of Molecular Epidemiology, German Institute of Human Nutrition Potsdam-Rehbruecke, 14558 Nuthetal, Germany; (R.R.C.C.); (M.B.S.)
- Institute of Nutritional Science, University of Potsdam, 14558 Potsdam, Germany
- German Center for Diabetes Research (DZD), 85764 Neuherberg, Germany
| | - Marie Standl
- Institute of Epidemiology, Helmholtz Zentrum München-German Research Center for Environmental Health, 85764 Neuherberg, Germany;
| | - Michael Schloter
- Research Unit for Comparative Microbiome Analysis, Helmholtz Zentrum München-German Research Center for Environmental Health, 85764 Neuherberg, Germany;
| | - Maria De Angelis
- Department of Soil, Plant and Food Sciences, University of Bari Aldo Moro, 70126 Bari, Italy;
| | - Patricia Iozzo
- Institute of Clinical Physiology, National Research Council, Via Moruzzi 1, 56124 Pisa, Italy; (P.I.); (M.A.G.)
| | - Maria Angela Guzzardi
- Institute of Clinical Physiology, National Research Council, Via Moruzzi 1, 56124 Pisa, Italy; (P.I.); (M.A.G.)
| | - Geertrui Vlaemynck
- Department Technology and Food, Flanders Research Institute for Agriculture, Fisheries and Food, 9090 Melle, Belgium;
| | - John Penders
- Department of Medical Microbiology, School of Nutrition and Translational Research in Metabolism (NUTRIM) and Care and Public Health Research Institute (CAPHRI), Maastricht University Medical Center, 6200 MD Maastricht, The Netherlands;
| | - Daisy M. A. E. Jonkers
- Department of Internal Medicine, Division Gastroenterology-Hepatology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, 6200 MD Maastricht, The Netherlands;
| | - Maya Stemmer
- Department of Industrial Engineering and Management, Ben-Gurion University of the Negev, Beer-Sheva P.O. Box 653, Israel;
| | - Giulia Chiesa
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milan, Italy;
| | - Duccio Cavalieri
- Department of Biology, University of Florence, Via Madonna del Piano 6, 50019 Florence, Italy;
| | - Carlotta De Filippo
- Institute of Agricultural Biology and Biotechnology National Research Council, Via Moruzzi 1, 56124 Pisa, Italy;
| | - Danilo Ercolini
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, Italy; (D.E.); (F.D.F.)
- Task Force on Microbiome Studies, University of Naples Federico II, 80134 Naples, Italy
| | - Francesca De Filippis
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, Italy; (D.E.); (F.D.F.)
- Task Force on Microbiome Studies, University of Naples Federico II, 80134 Naples, Italy
| | - David Ribet
- INSERM UMR 1073 “Nutrition, Inflammation and Gut-Brain Axis Dysfunctions”, UNIROUEN, Normandie University, 76000 Rouen, France; (D.R.); (N.A.); (M.-P.T.); (P.D.)
| | - Najate Achamrah
- INSERM UMR 1073 “Nutrition, Inflammation and Gut-Brain Axis Dysfunctions”, UNIROUEN, Normandie University, 76000 Rouen, France; (D.R.); (N.A.); (M.-P.T.); (P.D.)
- Department of Nutrition, CHU Rouen, 76000 Rouen, France
| | - Marie-Pierre Tavolacci
- INSERM UMR 1073 “Nutrition, Inflammation and Gut-Brain Axis Dysfunctions”, UNIROUEN, Normandie University, 76000 Rouen, France; (D.R.); (N.A.); (M.-P.T.); (P.D.)
- INSERM CIC-CRB 1404, CHU Rouen, 76000 Rouen, France
| | - Pierre Déchelotte
- INSERM UMR 1073 “Nutrition, Inflammation and Gut-Brain Axis Dysfunctions”, UNIROUEN, Normandie University, 76000 Rouen, France; (D.R.); (N.A.); (M.-P.T.); (P.D.)
- Department of Nutrition, CHU Rouen, 76000 Rouen, France
| | - Jildau Bouwman
- Microbiology and Systems Biology Group, TNO, Utrechtseweg 48, 3704 HE Zeist, The Netherlands;
| | - Matthias Laudes
- Institute of Diabetes and Clinical Metabolic Research, University of Kiel, 24105 Kiel, Germany; (K.S.); (M.L.)
| | - Tobias Pischon
- Molecular Epidemiology Research Group, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin, Germany; (M.P.); (T.P.)
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, 10117 Berlin, Germany
- German Centre for Cardiovascular Research (DZHK), Partner Site Berlin, 10785 Berlin, Germany
- Biobank Technology Platform, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin, Germany
- Biobank Core Facility, Berlin Institute of Health at Charité-Universitätsmedizin Berlin, 10178 Berlin, Germany
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15
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Rebelos E, Iozzo P, Guzzardi MA, Brunetto MR, Bonino F. Brain-gut-liver interactions across the spectrum of insulin resistance in metabolic fatty liver disease. World J Gastroenterol 2021; 27:4999-5018. [PMID: 34497431 PMCID: PMC8384743 DOI: 10.3748/wjg.v27.i30.4999] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/29/2021] [Accepted: 07/13/2021] [Indexed: 02/06/2023] Open
Abstract
Metabolic associated fatty liver disease (MAFLD), formerly named "nonalcoholic fatty liver disease" occurs in about one-third of the general population of developed countries worldwide and behaves as a major morbidity and mortality risk factor for major causes of death, such as cardiovascular, digestive, metabolic, neoplastic and neuro-degenerative diseases. However, progression of MAFLD and its associated systemic complications occur almost invariably in patients who experience the additional burden of intrahepatic and/or systemic inflammation, which acts as disease accelerator. Our review is focused on the new knowledge about the brain-gut-liver axis in the context of metabolic dysregulations associated with fatty liver, where insulin resistance has been assumed to play an important role. Special emphasis has been given to digital imaging studies and in particular to positron emission tomography, as it represents a unique opportunity for the noninvasive in vivo study of tissue metabolism. An exhaustive revision of targeted animal models is also provided in order to clarify what the available preclinical evidence suggests for the causal interactions between fatty liver, dysregulated endogenous glucose production and insulin resistance.
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Affiliation(s)
- Eleni Rebelos
- Turku PET Centre, University of Turku, Turku 20500, Finland
| | - Patricia Iozzo
- Institute of Clinical Physiology, National Research Council, Pisa 56124, Italy
| | | | - Maurizia Rossana Brunetto
- Hepatology Unit and Laboratory of Molecular Genetics and Pathology of Hepatitis, Pisa University Hospital, Pisa 56121, Italy
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa 56121, Italy
- Institute of Biostructure and Bioimaging, National Research Council, Napoli 80145, Italy
| | - Ferruccio Bonino
- Institute of Biostructure and Bioimaging, National Research Council, Napoli 80145, Italy
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16
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Sorice GP, Cinti F, Leccisotti L, D'Amario D, Lorusso M, Guzzardi MA, Mezza T, Cocchi C, Capece U, Ferraro PM, Crea F, Giordano A, Iozzo P, Giaccari A. Effect of Dapagliflozin on Myocardial Insulin Sensitivity and Perfusion: Rationale and Design of The DAPAHEART Trial. Diabetes Ther 2021; 12:2101-2113. [PMID: 34037951 PMCID: PMC8266960 DOI: 10.1007/s13300-021-01083-1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 05/12/2021] [Indexed: 12/26/2022] Open
Abstract
INTRODUCTION Sodium-glucose co-transporter-2 (SGLT-2) inhibitors have been shown to have beneficial effects on various cardiovascular (CV) outcomes in patients with type 2 diabetes (T2D) in primary prevention and in those with a high CV risk profile. However, the mechanism(s) responsible for these CV benefits remain elusive and unexplained. The aim of the DAPAHEART study will be to demonstrate that treatment with SGLT-2 inhibitors is associated with greater myocardial insulin sensitivity in patients with T2D, and to determine whether this improvement can be attributed to a decrease in whole-body (and tissue-specific) insulin resistance and to increased myocardial perfusion and/or glucose uptake. We will also determine whether there is an appreciable degree of improvement in myocardial-wall conditions subtended by affected and non-affected coronary vessels, and if this relates to changes in left ventricular function. METHODS The DAPAHEART trial will be a phase III, single-center, randomized, two-arm, parallel-group, double-blind, placebo-controlled study. A cohort of 52 T2D patients with stable coronary artery disease (without any previous history of myocardial infarction, with or without previous percutaneous coronary intervention), with suboptimal glycemic control (glycated hemoglobin [HbA1c] 7-8.5%) on their current standard of care anti-hyperglycemic regimen, will be randomized in a 1:1 ratio to dapagliflozin or placebo. The primary outcome is to detect changes in myocardial glucose uptake from baseline to 4 weeks after treatment initiation. The main secondary outcome will be changes in myocardial blood flow, as measured by 13N-ammonia positron emission tomography/computed tomography (PET/CT). Other outcomes include cardiac function, glucose uptake in skeletal muscle, adipose tissue, liver, brain and kidney, as assessed by fluorodeoxyglucose (FDG) PET-CT imaging during hyperinsulinemic-euglycemic clamp; pericardial, subcutaneous and visceral fat, and browning as observed on CT images during FDG PET-CT studies; systemic insulin sensitivity, as assessed by hyperinsulinemic-euglycemic clamp, glycemic control, urinary glucose output; and microbiota modification. DISCUSSION SGLT-2 inhibitors, in addition to their insulin-independent plasma glucose-lowering effect, are able to directly (substrate availability, fuel utilization, insulin sensitivity) as well as indirectly (cardiac after-load reduction, decreased risk factors for heart failure) affect myocardial functions. Our study will provide novel insights into how these drugs exert CV protection in a diabetic population. TRIAL REGISTRATION EudraCT No. 2016-003614-27; ClinicalTrials.gov Identifier: NCT03313752.
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Affiliation(s)
- Gian Pio Sorice
- Dipartimento di Scienze Mediche e Chirurgiche, Centro Malattie Endocrine e Metaboliche, Fondazione Policlinico Universitario A. Gemelli IRCCS-Università Cattolica del Sacro Cuore, Rome, Italy
- Department of Emergency and Organ Transplantation, Section of Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, University of Bari Aldo Moro, Bari, Italy
| | - Francesca Cinti
- Dipartimento di Scienze Mediche e Chirurgiche, Centro Malattie Endocrine e Metaboliche, Fondazione Policlinico Universitario A. Gemelli IRCCS-Università Cattolica del Sacro Cuore, Rome, Italy
| | - Lucia Leccisotti
- Dipartimento di Diagnostica Per Immagini, Radioterapia Oncologica ed Ematologia, UOC di Medicina Nucleare, Fondazione Policlinico Universitario A. Gemelli IRCCS-Università Cattolica del Sacro Cuore, Rome, Italy
| | - Domenico D'Amario
- Dipartimento di Scienze Cardiovascolari, UOC di Cardiologia, Fondazione Policlinico Universitario A. Gemelli IRCCS-Università Cattolica del Sacro Cuore, Rome, Italy
| | - Margherita Lorusso
- Dipartimento di Diagnostica Per Immagini, Radioterapia Oncologica ed Ematologia, UOC di Medicina Nucleare, Fondazione Policlinico Universitario A. Gemelli IRCCS-Università Cattolica del Sacro Cuore, Rome, Italy
| | - Maria Angela Guzzardi
- Istituto di Fisiologia Clinica, Consiglio Nazionale Delle Ricerche (CNR), Pisa, Italy
| | - Teresa Mezza
- Dipartimento di Scienze Mediche e Chirurgiche, Centro Malattie Endocrine e Metaboliche, Fondazione Policlinico Universitario A. Gemelli IRCCS-Università Cattolica del Sacro Cuore, Rome, Italy
| | - Camilla Cocchi
- Dipartimento di Scienze Mediche e Chirurgiche, Centro Malattie Endocrine e Metaboliche, Fondazione Policlinico Universitario A. Gemelli IRCCS-Università Cattolica del Sacro Cuore, Rome, Italy
| | - Umberto Capece
- Dipartimento di Scienze Mediche e Chirurgiche, Centro Malattie Endocrine e Metaboliche, Fondazione Policlinico Universitario A. Gemelli IRCCS-Università Cattolica del Sacro Cuore, Rome, Italy
| | - Pietro Manuel Ferraro
- Dipartimento di Scienze Mediche e Chirurgiche, UOC di Nefrologia, Fondazione Policlinico Universitario A. Gemelli IRCCS-Università Cattolica del Sacro Cuore, Rome, Italy
| | - Filippo Crea
- Dipartimento di Scienze Cardiovascolari, UOC di Cardiologia, Fondazione Policlinico Universitario A. Gemelli IRCCS-Università Cattolica del Sacro Cuore, Rome, Italy
| | - Alessandro Giordano
- Dipartimento di Diagnostica Per Immagini, Radioterapia Oncologica ed Ematologia, UOC di Medicina Nucleare, Fondazione Policlinico Universitario A. Gemelli IRCCS-Università Cattolica del Sacro Cuore, Rome, Italy
| | - Patricia Iozzo
- Istituto di Fisiologia Clinica, Consiglio Nazionale Delle Ricerche (CNR), Pisa, Italy
| | - Andrea Giaccari
- Dipartimento di Scienze Mediche e Chirurgiche, Centro Malattie Endocrine e Metaboliche, Fondazione Policlinico Universitario A. Gemelli IRCCS-Università Cattolica del Sacro Cuore, Rome, Italy.
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17
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Iozzo P, Guzzardi MA. Imaging of brain glucose uptake by PET in obesity and cognitive dysfunction: life-course perspective. Endocr Connect 2019; 8:R169-R183. [PMID: 31590145 PMCID: PMC6865363 DOI: 10.1530/ec-19-0348] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 10/07/2019] [Indexed: 12/17/2022]
Abstract
The prevalence of obesity has reached epidemic proportions and keeps growing. Obesity seems implicated in the pathogenesis of cognitive dysfunction, Alzheimer's disease and dementia, and vice versa. Growing scientific efforts are being devoted to the identification of central mechanisms underlying the frequent association between obesity and cognitive dysfunction. Glucose brain handling undergoes dynamic changes during the life-course, suggesting that its alterations might precede and contribute to degenerative changes or signaling abnormalities. Imaging of the glucose analog 18F-labeled fluorodeoxyglucose (18FDG) by positron emission tomography (PET) is the gold-standard for the assessment of cerebral glucose metabolism in vivo. This review summarizes the current literature addressing brain glucose uptake measured by PET imaging, and the effect of insulin on brain metabolism, trying to embrace a life-course vision in the identification of patterns that may explain (and contribute to) the frequent association between obesity and cognitive dysfunction. The current evidence supports that brain hypermetabolism and brain insulin resistance occur in selected high-risk conditions as a transient phenomenon, eventually evolving toward normal or low values during life or disease progression. Associative studies suggest that brain hypermetabolism predicts low BDNF levels, hepatic and whole body insulin resistance, food desire and an unfavorable balance between anticipated reward from food and cognitive inhibitory control. Emerging mechanistic links involve the microbiota and the metabolome, which correlate with brain metabolism and cognition, deserving attention as potential future prevention targets.
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Affiliation(s)
- Patricia Iozzo
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
- Correspondence should be addressed to P Iozzo:
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18
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Pellegrini C, Columbaro M, Schena E, Prencipe S, Andrenacci D, Iozzo P, Angela Guzzardi M, Capanni C, Mattioli E, Loi M, Araujo-Vilar D, Squarzoni S, Cinti S, Morselli P, Giorgetti A, Zanotti L, Gambineri A, Lattanzi G. Altered adipocyte differentiation and unbalanced autophagy in type 2 Familial Partial Lipodystrophy: an in vitro and in vivo study of adipose tissue browning. Exp Mol Med 2019; 51:1-17. [PMID: 31375660 PMCID: PMC6802660 DOI: 10.1038/s12276-019-0289-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 01/15/2018] [Revised: 04/04/2019] [Accepted: 04/16/2019] [Indexed: 01/29/2023] Open
Abstract
Type-2 Familial Partial Lipodystrophy is caused by LMNA mutations. Patients gradually lose subcutaneous fat from the limbs, while they accumulate adipose tissue in the face and neck. Several studies have demonstrated that autophagy is involved in the regulation of adipocyte differentiation and the maintenance of the balance between white and brown adipose tissue. We identified deregulation of autophagy in laminopathic preadipocytes before induction of differentiation. Moreover, in differentiating white adipocyte precursors, we observed impairment of large lipid droplet formation, altered regulation of adipose tissue genes, and expression of the brown adipose tissue marker UCP1. Conversely, in lipodystrophic brown adipocyte precursors induced to differentiate, we noticed activation of autophagy, formation of enlarged lipid droplets typical of white adipocytes, and dysregulation of brown adipose tissue genes. In agreement with these in vitro results indicating conversion of FPLD2 brown preadipocytes toward the white lineage, adipose tissue from FPLD2 patient neck, an area of brown adipogenesis, showed a white phenotype reminiscent of its brown origin. Moreover, in vivo morpho-functional evaluation of fat depots in the neck area of three FPLD2 patients by PET/CT analysis with cold stimulation showed the absence of brown adipose tissue activity. These findings highlight a new pathogenetic mechanism leading to improper fat distribution in lamin A-linked lipodystrophies and show that both impaired white adipocyte turnover and failure of adipose tissue browning contribute to disease. An abnormal distribution of fatty tissues associated with certain tissue disorders is driven by disrupted fat cell differentiation. Type 2 familial partial lipodystrophy (FPLD2) is a genetic condition that results in fat being lost from the limbs and accumulating in the face and neck. Giovanna Lattanzi at the National Research Council of Italy in Bologna and co-workers found that fat cell (adipocyte) precursors did not clearly differentiate into either of the two main fatty tissue types, brown or white, in FPLD2 patients. White adipocyte precursors exhibited impaired lipid formation and abnormal levels of brown tissue markers. Conversely, brown adipocyte precursors showed high lipid levels and increased autophagy, a natural process involving degradation and recycling of cellular components. The neck is normally where brown fat accumulates, but FPLD2 patients had adipocytes there displaying white fat characteristics.
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Affiliation(s)
- Camilla Pellegrini
- CNR - National Research Council of Italy, Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, Bologna, Italy
| | | | - Elisa Schena
- CNR - National Research Council of Italy, Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, Bologna, Italy.,IRCCS, Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Sabino Prencipe
- CNR - National Research Council of Italy, Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, Bologna, Italy
| | - Davide Andrenacci
- CNR - National Research Council of Italy, Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, Bologna, Italy.,IRCCS, Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Patricia Iozzo
- CNR - National Research Council of Italy, Institute of Clinical Physiology, Pisa, Italy
| | - Maria Angela Guzzardi
- CNR - National Research Council of Italy, Institute of Clinical Physiology, Pisa, Italy
| | - Cristina Capanni
- CNR - National Research Council of Italy, Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, Bologna, Italy.,IRCCS, Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Elisabetta Mattioli
- CNR - National Research Council of Italy, Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, Bologna, Italy.,IRCCS, Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Manuela Loi
- CNR - National Research Council of Italy, Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, Bologna, Italy
| | - David Araujo-Vilar
- Department of Medicine, CIMUS Biomedical Research Institute, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Stefano Squarzoni
- CNR - National Research Council of Italy, Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, Bologna, Italy.,IRCCS, Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Saverio Cinti
- Department of Experimental and Clinical Medicine, University of Ancona (UniversitàPolitecnicadelle Marche), Ancona, Italy.,Center of Obesity of University of Ancona, Ancona, Italy
| | - Paolo Morselli
- Plastic Surgery Unit, Department of Specialised, Experimental, and Diagnostic Medicine, Alma Mater Studiorum University of Bologna, S Orsola-Malpighi Hospital, Bologna, Italy
| | | | - Laura Zanotti
- Endocrinology Unit, Department of Medical and Surgical Sciences, Alma Mater Studiorum University of Bologna, S Orsola-Malpighi Hospital, Bologna, Italy
| | - Alessandra Gambineri
- Endocrinology Unit, Department of Medical and Surgical Sciences, Alma Mater Studiorum University of Bologna, S Orsola-Malpighi Hospital, Bologna, Italy
| | - Giovanna Lattanzi
- CNR - National Research Council of Italy, Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, Bologna, Italy. .,IRCCS, Istituto Ortopedico Rizzoli, Bologna, Italy.
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Sanguinetti E, Guzzardi MA, Panetta D, Tripodi M, De Sena V, Quaglierini M, Burchielli S, Salvadori PA, Iozzo P. Combined Effect of Fatty Diet and Cognitive Decline on Brain Metabolism, Food Intake, Body Weight, and Counteraction by Intranasal Insulin Therapy in 3×Tg Mice. Front Cell Neurosci 2019; 13:188. [PMID: 31130848 PMCID: PMC6509878 DOI: 10.3389/fncel.2019.00188] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [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: 08/30/2018] [Accepted: 04/12/2019] [Indexed: 11/13/2022] Open
Abstract
Obesity and cognitive decline can occur in association. Brain dysmetabolism and insulin resistance might be common underlying traits. We aimed to examine the effect of high-fat diet (HFD) on cognitive decline, and of cognitive impairment on food intake and body-weight, and explore efficacy of chronic intranasal insulin (INI) therapy. We used control (C) and triple transgenic mice (3×Tg, a model of Alzheimer's pathology) to measure cerebral mass, glucose metabolism, and the metabolic response to acute INI administration (cerebral insulin sensitivity). Y-Maze, positron emission-computed tomography, and histology were employed in 8 and 14-month-old mice, receiving normal diet (ND) or HFD. Chronic INI therapy was tested in an additional 3×Tg-HFD group. The 3×Tg groups overate, and had lower body-weight, but similar BMI, than diet-matched controls. Cognitive decline was progressive from HFD to 3×Tg-ND to 3×Tg-HFD. At 8 months, brain fasting glucose uptake (GU) was increased by C-HFD, and this effect was blunted in 3×Tg-HFD mice, also showing brain insulin resistance. Brain mass was reduced in 3×Tg mice at 14 months. Dentate gyrus dimensions paralleled cognitive findings. Chronic INI preserved cognition, dentate gyrus and metabolism, reducing food intake, and body weight in 3×Tg-HFD mice. Peripherally, leptin was suppressed and PAI-1 elevated in 3×Tg mice, correlating inversely with cerebral GU. In conclusion, 3×Tg background and HFD exert additive (genes*lifestyle) detriment to the brain, and cognitive dysfunction is accompanied by increased food intake in 3×Tg mice. PAI-1 levels and leptin deficiency were identified as potential peripheral contributors. Chronic INI improved peripheral and central outcomes.
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Affiliation(s)
- Elena Sanguinetti
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy.,Scuola Superiore di Studi Universitari Sant'Anna, Pisa, Italy
| | | | - Daniele Panetta
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
| | - Maria Tripodi
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
| | - Vincenzo De Sena
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
| | - Mauro Quaglierini
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
| | | | - Piero A Salvadori
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
| | - Patricia Iozzo
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
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20
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Guzzardi MA, Ait Ali L, D'Aurizio R, Rizzo F, Saggese P, Sanguinetti E, Weisz A, Pellegrini M, Iozzo P. Fetal cardiac growth is associated with in utero gut colonization. Nutr Metab Cardiovasc Dis 2019; 29:170-176. [PMID: 30579777 DOI: 10.1016/j.numecd.2018.10.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 10/09/2018] [Accepted: 10/11/2018] [Indexed: 11/20/2022]
Abstract
BACKGROUND AND AIMS Intra-uterine metabolic environment predicts newborns' cardiac morphology, metabolism and future health. In adults, gut microbiota composition relates to altered cardiac structure and metabolism. We investigated the relationship between gut microbiota colonization and fetal cardiac growth. METHODS AND RESULTS Bacterial composition in meconium samples of 26 healthy, full-term newborns was assessed by 16S rDNA gene sequencing. Its relationship with birth echocardiographic parameters, and the interaction with cord blood levels of inflammatory markers were investigated. Correlative and cluster analysis, linear discriminant analysis effect size and predictive functional analysis based on Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways were applied. Fetal left ventricle growth was related to gut microbiota composition at birth. Specifically, left ventricle posterior wall thickness (LVPW) greater than 4 mm was associated with lower microbiota beta and alpha diversity, depletion (LDA score > 3) of several bacteria at each taxonomic level, including Lactobacillales, and enrichment (LDA score > 5) in Enterobacteriales and Enterobacteriaceae. The latter was significantly related to cord blood gamma-glutamyltransferase levels (r = 0.58, p = 0.0057). Functionally, a thicker LVPW was related to up-regulation of pathways involved in lipopolysaccharide biosynthesis (+50%, p = 0.045 in correlative analysis) and energy metabolism (+12%, p = 0.028), and down-regulation of pathways involved in xenobiotic biodegradation (-21 to -53%, p = 0.0063-0.039), PPAR signaling (-24%, p = 0.021) and cardiac muscle contraction (-100%, p = 0.049). CONCLUSION Fetal cardiac growth and gut colonization are associated. Greater neonatal LVPW thickness is related to lower diversity of the gut microbiota community, depletion of bacteria having anti-remodeling effects, and enrichment in bacteria functionally linked to inflammation.
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Affiliation(s)
- M A Guzzardi
- Institute of Clinical Physiology, National Research Council (IFC-CNR), Pisa, Italy.
| | - L Ait Ali
- Institute of Clinical Physiology, National Research Council (IFC-CNR), Pisa, Italy; Fondazione Toscana Gabriele Monasterio (FTGM), Pisa, Italy
| | - R D'Aurizio
- Laboratory of Integrative System Medicine, Institute of Informatics and Telematics, National Research Council (IIT-CNR), Pisa, Italy
| | - F Rizzo
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry 'Scuola Medica Salernitana', University of Salerno, Salerno, Italy; Genomix4Life srl, Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Salerno, Italy
| | - P Saggese
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry 'Scuola Medica Salernitana', University of Salerno, Salerno, Italy
| | - E Sanguinetti
- Institute of Clinical Physiology, National Research Council (IFC-CNR), Pisa, Italy
| | - A Weisz
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry 'Scuola Medica Salernitana', University of Salerno, Salerno, Italy; Genomix4Life srl, Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Salerno, Italy
| | - M Pellegrini
- Laboratory of Integrative System Medicine, Institute of Informatics and Telematics, National Research Council (IIT-CNR), Pisa, Italy
| | - P Iozzo
- Institute of Clinical Physiology, National Research Council (IFC-CNR), Pisa, Italy.
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21
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Abstract
Obesity and type 2 diabetes are associated with greater risk of brain damage. Over the last decade, functional imaging techniques (functional magnetic resonance imaging, fMRI, positron emission tomography, PET, electroencephalography, magnetoencephalography, near infrared spectroscopy) have been exploited to better characterize behavioral and cognitive processes, by addressing cerebral reactions to a variety of stimuli or tasks, including hormones and substrates (e.g., glucose, insulin, gut peptides), environmental cues (e.g., presentation of sensory stimuli), and cognitive tasks. Among these techniques, fMRI and PET are most commonly used, and this review focuses on results obtained with these techniques in relation to brain substrate metabolism, appetite control and food intake, and cognitive decline in obesity and type 2 diabetes. The available knowledge indicates that there are a series of cerebral abnormalities associating with, or preceding obesity and type 2 diabetes, including impaired substrate handling, insulin resistance, disruption of inter-organ cross-talk and of resting state networking. Some of these abnormalities are reversed by metabolic interventions, suggesting that they are partly a consequence rather than cause of disease. Therefore, causal implications and mechanisms remain to be determined.
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Affiliation(s)
- Maria Angela Guzzardi
- Institute of Clinical Physiology, National Research Council (CNR), Via Moruzzi 1, 56124, Pisa, Italy.
| | - Patricia Iozzo
- Institute of Clinical Physiology, National Research Council (CNR), Via Moruzzi 1, 56124, Pisa, Italy
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22
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Meinilä J, Perälä MM, Kautiainen H, Männistö S, Kanerva N, Shivappa N, Hébert JR, Iozzo P, Guzzardi MA, Eriksson JG. Healthy diets and telomere length and attrition during a 10-year follow-up. Eur J Clin Nutr 2019; 73:1352-1360. [DOI: 10.1038/s41430-018-0387-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 11/30/2018] [Accepted: 12/15/2018] [Indexed: 02/07/2023]
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Guzzardi MA, Garelli S, Agostini A, Filidei E, Fanelli F, Giorgetti A, Mezzullo M, Fucci S, Mazza R, Vicennati V, Iozzo P, Pagotto U. Food addiction distinguishes an overweight phenotype that can be reversed by low calorie diet. Eur Eat Disord Rev 2018; 26:657-670. [PMID: 30350446 DOI: 10.1002/erv.2652] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [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: 08/08/2018] [Revised: 09/22/2018] [Accepted: 09/24/2018] [Indexed: 12/27/2022]
Abstract
Similarities in neural activation patterns in obese and substance-dependent subjects led to the food addiction concept, but studies exploiting this issue for obesity stratification are missing. We assessed brain activation in response to food cues using 18 F-2-fluoro-2-deoxy-glucose-PET in 36 overweight women, stratified by low or high food addiction groups according to the Yale Food Addiction Scale (YFAS). Assessments were repeated after a 3-month diet. We found greater activation in thalamus, hypothalamus, midbrain, putamen, and occipital cortex (reward), but not in prefrontal and orbitofrontal cortices (control/reward receipt) in the high-YFAS versus low-YFAS group. In high-YFAS subjects, orbitofrontal responsiveness was inversely related to YFAS severity and hunger rating, and positive associations were observed between regional brain activation and lipid intake. A 3-month diet abolished group differences in brain activation. Our data suggest that food addiction distinguishes an overweight phenotype that can be reversed by diet, opening to personalized strategies in obesity treatment.
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Affiliation(s)
| | - Silvia Garelli
- Endocrinology Unit, Department of Medical and Surgical Science, Centre for Applied Biomedical Research, S. Orsola-Malpighi Hospital, Alma Mater University of Bologna, Bologna, Italy
| | - Alessandro Agostini
- Department of Experimental, Diagnostic, and Specialty Medicine DIMES St. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
| | | | - Flaminia Fanelli
- Endocrinology Unit, Department of Medical and Surgical Science, Centre for Applied Biomedical Research, S. Orsola-Malpighi Hospital, Alma Mater University of Bologna, Bologna, Italy
| | | | - Marco Mezzullo
- Endocrinology Unit, Department of Medical and Surgical Science, Centre for Applied Biomedical Research, S. Orsola-Malpighi Hospital, Alma Mater University of Bologna, Bologna, Italy
| | | | - Roberta Mazza
- Endocrinology Unit, Department of Medical and Surgical Science, Centre for Applied Biomedical Research, S. Orsola-Malpighi Hospital, Alma Mater University of Bologna, Bologna, Italy
| | - Valentina Vicennati
- Endocrinology Unit, Department of Medical and Surgical Science, Centre for Applied Biomedical Research, S. Orsola-Malpighi Hospital, Alma Mater University of Bologna, Bologna, Italy
| | - Patricia Iozzo
- Institute of Clinical Physiology, National Research Council, Pisa, Italy
| | - Uberto Pagotto
- Endocrinology Unit, Department of Medical and Surgical Science, Centre for Applied Biomedical Research, S. Orsola-Malpighi Hospital, Alma Mater University of Bologna, Bologna, Italy
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24
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Berry A, Bucci M, Raggi C, Eriksson JG, Guzzardi MA, Nuutila P, Huovinen V, Iozzo P, Cirulli F. Dynamic changes in p66Shc mRNA expression in peripheral blood mononuclear cells following resistance training intervention in old frail women born to obese mothers: a pilot study. Aging Clin Exp Res 2018; 30:871-876. [PMID: 28952131 DOI: 10.1007/s40520-017-0834-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 09/14/2017] [Indexed: 01/28/2023]
Abstract
The p66Shc gerontogene may affect healthspan by promoting fat accumulation. We assessed changes of p66Shc-mRNA in peripheral tissues in relation to maternal obesity and the moderating effects of resistance-training (RT) exercise in elderly frail women. Thirty-seven women participated in a 4-month RT program. Twenty were offspring of lean/normal weight mothers and 17 were offspring of overweight/obese mothers (OOM). P66Shc was assessed in peripheral blood mononuclear cells (PBMC) and in subcutaneous adipose tissue (SAT) before and after RT. Overall, OOM showed elevated p66Shc mRNA levels in the PBMC. Independently from maternal obesity, following RT there was a decrease in p66Shc expression in PBMC but not in SAT, particularly in subjects with a high body mass index. Results suggest that maternal obesity has long-term effects on the expression of genes involved in mitochondrial function and fat deposition and that RT modifies p66Shc expression in PBMC with greater effects in obese subjects.ClinicalTrials.gov ID: NCT01931540.
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Affiliation(s)
- Alessandra Berry
- Center for Behavioral Sciences and Mental Health, Istituto Superiore di Sanità, Rome, Italy.
| | - Marco Bucci
- Turku PET Centre, University of Turku, Turku, Finland
| | - Carla Raggi
- Center for Behavioral Sciences and Mental Health, Istituto Superiore di Sanità, Rome, Italy
| | - Johan G Eriksson
- Department of Chronic Disease Prevention, National Institute of Health and Welfare, Helsinki, Finland
- Folkhälsan Research Center, Helsinki, Finland
- Department of General Practice and Primary Health Care, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | | | - Pirjo Nuutila
- Turku PET Centre, University of Turku, Turku, Finland
- Department of Endocrinology, Turku University Hospital, Turku, Finland
| | - Ville Huovinen
- Turku PET Centre, University of Turku, Turku, Finland
- Department of Radiology, University of Turku, Turku, Finland
- Department of Radiology, Turku University Hospital, Turku, Finland
| | - Patricia Iozzo
- Institute of Clinical Physiology, National Research Council, Pisa, Italy
| | - Francesca Cirulli
- Center for Behavioral Sciences and Mental Health, Istituto Superiore di Sanità, Rome, Italy
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Guzzardi MA, Sanguinetti E, Bartoli A, Kemeny A, Panetta D, Salvadori PA, Burchielli S, Iozzo P. Elevated glycemia and brain glucose utilization predict BDNF lowering since early life. J Cereb Blood Flow Metab 2018; 38:447-455. [PMID: 28281382 PMCID: PMC5851134 DOI: 10.1177/0271678x17697338] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 01/27/2017] [Indexed: 11/16/2022]
Abstract
Obesity and diabetes associate with neurodegeneration. Brain glucose and BDNF are fundamental in perinatal development. BDNF is related to brain health, food intake and glucose metabolism. We characterized the relationship between glycemia and/or brain glucose utilization (by 18FDG-PET during fasting and glucose loading), obesity and BDNF in 4-weeks old (pre-obese) and 12-weeks old (obese) Zucker fa/fa rats, and their age-matched fa/+ controls. In 75 human infants, we assessed cord blood BDNF and glucose levels, appetite regulating hormones, body weight and maternal factors. Young and adult fa/fa rats showed glucose intolerance and brain hyper-utilization compared to controls. Glycemia and age were positively related to brain glucose utilization, and were negative predictors of BDNF levels. In humans, fetal glycemia was dependent on maternal glycemia at term, and negatively predicted BDNF levels. Leptin levels were associated with higher body weight and lower BDNF levels. Glucose intolerance and elevated brain glucose utilization already occur in young, pre-obese rats, suggesting that they precede obesity onset in Zucker fatty rats. Glycemic elevation and brain glucose overexposure predict circulating BDNF deficiency since perinatal and early life. Future studies should evaluate whether the control of maternal and fetal glycemia during late intrauterine development can prevent these unfavorable interactions.
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Affiliation(s)
| | - Elena Sanguinetti
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
- Scuola Superiore di Studi Universitari Sant’Anna, Pisa, Italy
| | - Antonietta Bartoli
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
| | - Alessandra Kemeny
- Gynaecology and Obstetrics Department, Azienda USL Toscana Nord Ovest, Massa e Carrara, Italy
| | - Daniele Panetta
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
| | - Piero A Salvadori
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
| | | | - Patricia Iozzo
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
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26
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Guzzardi MA, Hodson L, Guiducci L, La Rosa F, Salvadori PA, Burchielli S, Iozzo P. The role of glucose, insulin and NEFA in regulating tissue triglyceride accumulation: Substrate cooperation in adipose tissue versus substrate competition in skeletal muscle. Nutr Metab Cardiovasc Dis 2017; 27:956-963. [PMID: 28967595 DOI: 10.1016/j.numecd.2017.08.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 08/03/2017] [Accepted: 08/04/2017] [Indexed: 11/26/2022]
Abstract
BACKGROUND AND AIMS Metabolic factors initiating adipose tissue expansion and ectopic triglyceride accumulation are not completely understood. We aimed to investigate the independent role of circulating glucose, NEFA and insulin on glucose and NEFA uptake, and lipogenesis in skeletal muscle and subcutaneous adipose tissue (SCAT). METHODS AND RESULTS Twenty-two pigs were stratified according to four protocols: 1) and 2) low NEFA + high insulin ± high glucose (hyperinsulinaemia-hyperglycaemia or hyperinsulinaemia-euglycaemia), 3) high NEFA + low insulin (fasting), 4) low NEFA + low insulin (nicotinic acid). Positron emission tomography with [18F]fluoro-2-deoxyglucose and [11C]acetate, was combined with [14C]acetate and [U-13C]palmitate enrichment techniques to assess glucose and lipid metabolism. Hyperinsulinaemia increased glucose extraction, whilst hyperglycaemia enhanced glucose uptake in skeletal muscle and SCAT. In SCAT, during hyperglycaemia, elevated glucose uptake was accompanied by greater [U-13C]palmitate-TG enrichment compared to the other groups, and by a 39% increase in de novo lipogenesis (DNL) compared to baseline, consistent with a 70% increment in plasma lipogenic index. Conversely, in skeletal muscle, [U-13C]palmitate-TG enrichment was higher after prolonged fasting. CONCLUSIONS Our data show the necessary role of hyperglycaemia-hyperinsulinaemia vs euglycaemia-hyperinsulinaemia in promoting expansion of TG stores in SCAT, by the consensual elevation in plasma NEFA and glucose uptake and DNL. In contrast, skeletal muscle NEFA uptake for TG synthesis is primarily driven by circulating NEFA levels. These results suggest that a) prolonged fasting or dietary regimens enhancing lipolysis might promote muscle steatosis, and b) the control of glucose levels, in association with adequate energy balance, might contribute to weight loss.
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Affiliation(s)
- M A Guzzardi
- Institute of Clinical Physiology, National Research Council (IFC-CNR), Pisa, Italy
| | - L Hodson
- Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), University of Oxford, Oxford, United Kingdom
| | - L Guiducci
- Institute of Clinical Physiology, National Research Council (IFC-CNR), Pisa, Italy
| | - F La Rosa
- Institute of Clinical Physiology, National Research Council (IFC-CNR), Pisa, Italy
| | - P A Salvadori
- Institute of Clinical Physiology, National Research Council (IFC-CNR), Pisa, Italy
| | - S Burchielli
- Fondazione Toscana Gabriele Monasterio (FTGM), Pisa, Italy
| | - P Iozzo
- Institute of Clinical Physiology, National Research Council (IFC-CNR), Pisa, Italy.
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27
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Azzarà A, Chiaramonte A, Filomeni E, Pinto B, Mazzoni S, Piaggi S, Angela Guzzardi M, Bruschi F, Iozzo P, Scarpato R. Increased level of DNA damage in some organs of obese Zucker rats by γ-H2AX analysis. Environ Mol Mutagen 2017; 58:477-484. [PMID: 28714549 DOI: 10.1002/em.22115] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 06/15/2017] [Accepted: 06/15/2017] [Indexed: 06/07/2023]
Abstract
In a recent study, we showed that lymphocytes of obese Italian children/adolescents displayed levels of double strand breaks (DSB), assayed as serine 139-phosphorylated histone H2AX (γ-H2AX), about eightfold higher than normal weight controls, and that 30% of this damage-generated micronuclei. These findings suggested that obese children could be at increased risk of obesity-mediated cancer later in life. We therefore aimed to assess the level of γ-H2AX in a genetic animal model of obesity (Zucker rat) to identify a genotoxic/carcinogenic risk in some organs. The DSB marker was studied in 3- to 4-week-old rats and in 9- to 13-week-old rats. Paraffin-embedded sections of heart, thyroid, liver, pancreas, lung, kidney, esophagus, and gut from the fa-/fa- (obese) and the fa+/fa- (lean) control animals were processed for immunohistochemistry detection of γ-H2AX. Pancreas (0.0624 ± 0.0195), lung (0.1197 ± 0.0217), esophagus (0.1230 ± 0.0351), kidney (0.1546 ± 0.0149), and gut (0.1724 ± 0.0352) of 9- to 13-week-old obese rats showed a higher proportion of γ-H2AX-positive nuclei, than their lean counterparts (0.0092 ± 0.0033, 0.0416 ± 0.0185, 0.0368 ± 0.0088, 0.0686 ± 0.0318, and 0.0703 ± 0.0239, respectively). No difference was seen in the 3- to 4-week-old age group with regard to obesity, indicating that the DNA damage increased with older age of the rats. We hypothesize that the organs of the obese animals showing high levels of DSB could represent target tissues for the development of obesity-related cancers. Environ. Mol. Mutagen. 58:477-484, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Alessia Azzarà
- Unità di Genetica, Dipartimento di Biologia, University of Pisa, Via Derna 1, Pisa, 56126, Italy
| | - Anna Chiaramonte
- Unità di Genetica, Dipartimento di Biologia, University of Pisa, Via Derna 1, Pisa, 56126, Italy
| | - Erika Filomeni
- Unità di Genetica, Dipartimento di Biologia, University of Pisa, Via Derna 1, Pisa, 56126, Italy
| | - Barbara Pinto
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Via Savi 10, Pisa, 56126, Italy
| | - Stefano Mazzoni
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Via Savi 10, Pisa, 56126, Italy
| | - Simona Piaggi
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Via Savi 10, Pisa, 56126, Italy
| | | | - Fabrizio Bruschi
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Via Savi 10, Pisa, 56126, Italy
| | - Patricia Iozzo
- CNR Institute of Clinical Physiology, Via Giuseppe Moruzzi, 1, Pisa, 56124, Italy
| | - Roberto Scarpato
- Unità di Genetica, Dipartimento di Biologia, University of Pisa, Via Derna 1, Pisa, 56126, Italy
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28
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Ragusa R, Cabiati M, Guzzardi MA, D'Amico A, Giannessi D, Del Ry S, Caselli C. Effects of obesity on IL-33/ST2 system in heart, adipose tissue and liver: study in the experimental model of Zucker rats. Exp Mol Pathol 2017; 102:354-359. [PMID: 28274612 DOI: 10.1016/j.yexmp.2017.03.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 02/24/2017] [Accepted: 03/01/2017] [Indexed: 01/15/2023]
Abstract
Suppression of tumorigenicity 2 (ST2) mediates the effect of Interleukin-33 (IL-33). Few data are reported on the relationship between IL-33/ST2 and obesity. We aimed to investigate effects of obesity on IL-33/ST2 system in heart, adipose tissue and liver in a rodent model of obesity. The relationship of cardiac expression of IL-33/ST2 system with natriuretic peptides (NPs) system and inflammatory mediators was also studied. mRNA expression of IL-33/ST2 system was evaluated in cardiac, adipose and hepatic biopsies from obese Zucker rats (O) and controls (CO). Expression levels of sST2 was significantly lower in O rats compared with CO (p<0.05) in all tissues. Besides, the mRNA levels of IL-33 decreased significant in fat of O respect to CO, while, expression levels of ST2L was significantly higher in liver of CO than in O. A strong relationship of IL-33/ST2 with NPs and classical inflammatory mediators was observed in cardiac tissue. Expression of sST2 in cardiac, adipose and liver tissue decreased in O compared with controls, suggesting an involvement for IL-33/ST2 system in molecular mechanisms of obesity. The strong relationships with NP systems and inflammatory mediators could suggest an involvement for IL-33/ST2 in molecular pathways leading to cardiac dysfunction and inflammation associated with obesity.
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Affiliation(s)
| | | | | | - Andrea D'Amico
- Scuola Superiore Sant'Anna, Pisa, Pisa, Italy; Harvard Department of Stem Cell and Regenerative Biology, Cambridge, MA, USA
| | | | - Silvia Del Ry
- Institute of Clinical Physiology of CNR, Pisa, Italy
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29
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Levy G, Habib N, Guzzardi MA, Kitsberg D, Bomze D, Ezra E, Uygun BE, Uygun K, Trippler M, Schlaak JF, Shibolet O, Sklan EH, Cohen M, Timm J, Friedman N, Nahmias Y. Nuclear receptors control pro-viral and antiviral metabolic responses to hepatitis C virus infection. Nat Chem Biol 2016; 12:1037-1045. [PMID: 27723751 DOI: 10.1038/nchembio.2193] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 08/02/2016] [Indexed: 12/11/2022]
Abstract
Viruses lack the basic machinery needed to replicate and therefore must hijack the host's metabolism to propagate. Virus-induced metabolic changes have yet to be systematically studied in the context of host transcriptional regulation, and such studies shoul offer insight into host-pathogen metabolic interplay. In this work we identified hepatitis C virus (HCV)-responsive regulators by coupling system-wide metabolic-flux analysis with targeted perturbation of nuclear receptors in primary human hepatocytes. We found HCV-induced upregulation of glycolysis, ketogenesis and drug metabolism, with glycolysis controlled by activation of HNF4α, ketogenesis by PPARα and FXR, and drug metabolism by PXR. Pharmaceutical inhibition of HNF4α reversed HCV-induced glycolysis, blocking viral replication while increasing apoptosis in infected cells showing virus-induced dependence on glycolysis. In contrast, pharmaceutical inhibition of PPARα or FXR reversed HCV-induced ketogenesis but increased viral replication, demonstrating a novel host antiviral response. Our results show that virus-induced changes to a host's metabolism can be detrimental to its life cycle, thus revealing a biologically complex relationship between virus and host.
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Affiliation(s)
- Gahl Levy
- Grass Center for Bioengineering, Benin School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem, Israel.,Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Naomi Habib
- Grass Center for Bioengineering, Benin School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem, Israel.,Grass Center for Bioengineering, Benin School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem, Israel.,Klarman Cell Observatory, Broad Institute of Harvard and MIT, Cambridge, Massachusetts, USA
| | - Maria Angela Guzzardi
- Grass Center for Bioengineering, Benin School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem, Israel.,Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
| | - Daniel Kitsberg
- Grass Center for Bioengineering, Benin School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem, Israel.,Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - David Bomze
- Grass Center for Bioengineering, Benin School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem, Israel.,Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Elishai Ezra
- Grass Center for Bioengineering, Benin School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem, Israel.,Faculty of Engineering, Jerusalem College of Technology, Jerusalem, Israel
| | - Basak E Uygun
- Center for Engineering in Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Korkut Uygun
- Center for Engineering in Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Martin Trippler
- Department of Gastroenterology and Hepatology, University Hospital, University Duisburg-Essen, Essen, Germany
| | - Joerg F Schlaak
- Department of Gastroenterology and Hepatology, University Hospital, University Duisburg-Essen, Essen, Germany
| | - Oren Shibolet
- Liver Unit, Department of Gastroenterology, Tel-Aviv Medical Center and Sackler Faculty of Medicine, Tel Aviv, Israel
| | - Ella H Sklan
- Department of Clinical Microbiology and Immunology, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Merav Cohen
- Grass Center for Bioengineering, Benin School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem, Israel.,Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Joerg Timm
- Institute for Virology, Medical Faculty, University of Düsseldorf, Düsseldorf, Germany
| | - Nir Friedman
- Grass Center for Bioengineering, Benin School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem, Israel.,Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Yaakov Nahmias
- Grass Center for Bioengineering, Benin School of Computer Science and Engineering, The Hebrew University of Jerusalem, Jerusalem, Israel.,Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
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30
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Guzzardi MA, Iozzo P, Salonen MK, Kajantie E, Airaksinen R, Kiviranta H, Rantakokko P, Eriksson JG. Exposure to Persistent Organic Pollutants Predicts Telomere Length in Older Age: Results from the Helsinki Birth Cohort Study. Aging Dis 2016; 7:540-552. [PMID: 27699078 PMCID: PMC5036950 DOI: 10.14336/ad.2016.0209] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [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: 11/27/2015] [Accepted: 02/09/2016] [Indexed: 12/14/2022] Open
Abstract
As the population ages, the occurrence of chronic pathologies becomes more common. Leukocyte telomere shortening associates to ageing and age-related diseases. Recent studies suggest that environmental chemicals can affect telomere length. Persistent organic pollutants (POPs) are most relevant, since they are ingested with foods, and accumulate in the body for a long time. This longitudinal study was undertaken to test if circulating POPs predict telomere length and shortening in elderly people. We studied 1082 subjects belonging to the Helsinki Birth Cohort Study (born 1934-1944), undergoing two visits (2001-2004 and 2011-2014). POPs (oxychlordane, trans-nonachlor, p, p’-DDE, PCB 153, BDE 47, BDE 153) were analysed at baseline. Relative telomere length was measured twice, ’10 years apart, by quantitative real-time PCR. Oxychlordane, trans-nonachlor and PCB-153 levels were significant predictors of telomere length and shortening. In men, we did not find a linear relationship between POPs exposure and telomere shortening. In women, a significant reduction across quartiles categories of oxychlordane and trans-nonachlor exposure was observed. Baseline characteristics of subjects in the highest POPs categories included higher levels of C-reactive protein and fasting glucose, and lower body fat percentage. This is one of few studies combining POPs and telomere length. Our results indicate that exposure to oxychlordane, trans-nonachlor and PCB 153 predicts telomere attrition. This finding is important because concentrations of POPs observed here occur in contemporary younger people, and may contribute to an accelerated ageing.
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Affiliation(s)
| | - Patricia Iozzo
- 1Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
| | - Minna K Salonen
- 2National Institute for Health and Welfare, Chronic Disease Prevention Unit, Helsinki, Finland; 6Folkhälsan Research Centre, Helsinki, Helsingfors Universitet, Helsinki, Finland
| | - Eero Kajantie
- 2National Institute for Health and Welfare, Chronic Disease Prevention Unit, Helsinki, Finland; 3Children's Hospital, Helsinki University Hospital and University of Helsinki, Helsinki, Finland; 4PEDEGO Research Group, MRC Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Riikka Airaksinen
- 8National Institute for Health and Welfare, Department of Health Protection, Chemicals and Health Unit, Finland
| | - Hannu Kiviranta
- 8National Institute for Health and Welfare, Department of Health Protection, Chemicals and Health Unit, Finland
| | - Panu Rantakokko
- 8National Institute for Health and Welfare, Department of Health Protection, Chemicals and Health Unit, Finland
| | - Johan Gunnar Eriksson
- 2National Institute for Health and Welfare, Chronic Disease Prevention Unit, Helsinki, Finland; 5Department of General Practice and Primary Health Care, University of Helsinki, Helsinki, Finland; 6Folkhälsan Research Centre, Helsinki, Helsingfors Universitet, Helsinki, Finland; 7Unit of General Practice, Helsinki University Hospital, Finland
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31
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Iozzo P, Guzzardi MA. Cross-Talk Between Adipose Tissue Health, Myocardial Metabolism and Vascular Function: The Adipose-Myocardial and Adipose-Vascular Axes. Curr Pharm Des 2016; 22:59-67. [PMID: 26548309 DOI: 10.2174/1381612822666151109111834] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2015] [Accepted: 11/05/2015] [Indexed: 11/22/2022]
Abstract
Alterations in myocardial metabolism and blood flow have been described in patients with metabolic disorders, cardiovascular disease and cardiomyopathies, and have been implicated in the pathogenesis or prognosis of cardiac conditions. Adipose tissue dysfunction occurs in the above categories of patients. Adipose tissue plays a fundamental role in the modulation and selection of nutrients reaching the myocardium, and adipocytes secrete adipokines and other molecules affecting myocardial metabolism and regulating vascular function. In turn, the myocardium secretes a series of peptides affecting adipose tissue metabolism, and adipose tissue vascularization and perfusion contribute to the maintenance of adipose tissue health. This review addresses the reciprocal interaction linking adipose tissue to myocardial metabolism and vascular function. We summarize evidence of factors released by adipose tissue that affect cardiac metabolism and vice versa. Then, we address the role of adipose tissue in regulating vascular health, and examine whether adipose tissue hypoperfusion is causative or defensive of adipose tissue dysfunction.
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Affiliation(s)
- Patricia Iozzo
- Institute of Clinical Physiology, National Research Council (CNR), Via Moruzzi 1, 56124 Pisa.
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32
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Hannukainen JC, Lautamäki R, Mari A, Pärkkä JP, Bucci M, Guzzardi MA, Kajander S, Tuokkola T, Knuuti J, Iozzo P. Elevated Glucose Oxidation, Reduced Insulin Secretion, and a Fatty Heart May Be Protective Adaptions in Ischemic CAD. J Clin Endocrinol Metab 2016; 101:2701-10. [PMID: 27045985 PMCID: PMC4929844 DOI: 10.1210/jc.2015-4091] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Insulin resistance, β-cell dysfunction, and ectopic fat deposition have been implicated in the pathogenesis of coronary artery disease (CAD) and type 2 diabetes, which is common in CAD patients. We investigated whether CAD is an independent predictor of these metabolic abnormalities and whether this interaction is influenced by superimposed myocardial ischemia. METHODS AND RESULTS We studied CAD patients with (n = 8) and without (n = 14) myocardial ischemia and eight non-CAD controls. Insulin sensitivity and secretion and substrate oxidation were measured during fasting and oral glucose tolerance testing. We used magnetic resonance imaging/spectroscopy, positron emission and computerized tomography to characterize CAD, cardiac function, pericardial and abdominal adipose tissue, and myocardial, liver, and pancreatic triglyceride contents. Ischemic CAD was characterized by elevated oxidative glucose metabolism and a proportional decline in β-cell insulin secretion and reduction in lipid oxidation. Cardiac function was preserved in CAD groups, whereas cardiac fat depots were elevated in ischemic CAD compared to non-CAD subjects. Liver and pancreatic fat contents were similar in all groups and related with surrounding adipose masses or systemic insulin sensitivity. CONCLUSIONS In ischemic CAD patients, glucose oxidation is enhanced and correlates inversely with insulin secretion. This can be seen as a mechanism to prevent glucose lowering because glucose is required in oxygen-deprived tissues. On the other hand, the accumulation of cardiac triglycerides may be a physiological adaptation to the limited fatty acid oxidative capacity. Our results underscore the urgent need of clinical trials that define the optimal/safest glycemic range in situations of myocardial ischemia.
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Affiliation(s)
- J C Hannukainen
- Turku PET Center (J.C.H., R.L., J.P.P., M.B., S.K., T.T., J.K., P.I.), University of Turku, 20014 Turku, Finland; Heart Center (R.L.), Turku University Hospital, 20520 Turku, Finland; Institute of Neuroscience (A.M.), National Research Council, 35127 Padua, Italy; and Institute of Clinical Physiology (M.A.G., P.I.), National Research Council, 56124 Pisa, Italy
| | - R Lautamäki
- Turku PET Center (J.C.H., R.L., J.P.P., M.B., S.K., T.T., J.K., P.I.), University of Turku, 20014 Turku, Finland; Heart Center (R.L.), Turku University Hospital, 20520 Turku, Finland; Institute of Neuroscience (A.M.), National Research Council, 35127 Padua, Italy; and Institute of Clinical Physiology (M.A.G., P.I.), National Research Council, 56124 Pisa, Italy
| | - A Mari
- Turku PET Center (J.C.H., R.L., J.P.P., M.B., S.K., T.T., J.K., P.I.), University of Turku, 20014 Turku, Finland; Heart Center (R.L.), Turku University Hospital, 20520 Turku, Finland; Institute of Neuroscience (A.M.), National Research Council, 35127 Padua, Italy; and Institute of Clinical Physiology (M.A.G., P.I.), National Research Council, 56124 Pisa, Italy
| | - J P Pärkkä
- Turku PET Center (J.C.H., R.L., J.P.P., M.B., S.K., T.T., J.K., P.I.), University of Turku, 20014 Turku, Finland; Heart Center (R.L.), Turku University Hospital, 20520 Turku, Finland; Institute of Neuroscience (A.M.), National Research Council, 35127 Padua, Italy; and Institute of Clinical Physiology (M.A.G., P.I.), National Research Council, 56124 Pisa, Italy
| | - M Bucci
- Turku PET Center (J.C.H., R.L., J.P.P., M.B., S.K., T.T., J.K., P.I.), University of Turku, 20014 Turku, Finland; Heart Center (R.L.), Turku University Hospital, 20520 Turku, Finland; Institute of Neuroscience (A.M.), National Research Council, 35127 Padua, Italy; and Institute of Clinical Physiology (M.A.G., P.I.), National Research Council, 56124 Pisa, Italy
| | - M A Guzzardi
- Turku PET Center (J.C.H., R.L., J.P.P., M.B., S.K., T.T., J.K., P.I.), University of Turku, 20014 Turku, Finland; Heart Center (R.L.), Turku University Hospital, 20520 Turku, Finland; Institute of Neuroscience (A.M.), National Research Council, 35127 Padua, Italy; and Institute of Clinical Physiology (M.A.G., P.I.), National Research Council, 56124 Pisa, Italy
| | - S Kajander
- Turku PET Center (J.C.H., R.L., J.P.P., M.B., S.K., T.T., J.K., P.I.), University of Turku, 20014 Turku, Finland; Heart Center (R.L.), Turku University Hospital, 20520 Turku, Finland; Institute of Neuroscience (A.M.), National Research Council, 35127 Padua, Italy; and Institute of Clinical Physiology (M.A.G., P.I.), National Research Council, 56124 Pisa, Italy
| | - T Tuokkola
- Turku PET Center (J.C.H., R.L., J.P.P., M.B., S.K., T.T., J.K., P.I.), University of Turku, 20014 Turku, Finland; Heart Center (R.L.), Turku University Hospital, 20520 Turku, Finland; Institute of Neuroscience (A.M.), National Research Council, 35127 Padua, Italy; and Institute of Clinical Physiology (M.A.G., P.I.), National Research Council, 56124 Pisa, Italy
| | - J Knuuti
- Turku PET Center (J.C.H., R.L., J.P.P., M.B., S.K., T.T., J.K., P.I.), University of Turku, 20014 Turku, Finland; Heart Center (R.L.), Turku University Hospital, 20520 Turku, Finland; Institute of Neuroscience (A.M.), National Research Council, 35127 Padua, Italy; and Institute of Clinical Physiology (M.A.G., P.I.), National Research Council, 56124 Pisa, Italy
| | - P Iozzo
- Turku PET Center (J.C.H., R.L., J.P.P., M.B., S.K., T.T., J.K., P.I.), University of Turku, 20014 Turku, Finland; Heart Center (R.L.), Turku University Hospital, 20520 Turku, Finland; Institute of Neuroscience (A.M.), National Research Council, 35127 Padua, Italy; and Institute of Clinical Physiology (M.A.G., P.I.), National Research Council, 56124 Pisa, Italy
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Hannukainen JC, Guzzardi MA, Virtanen KA, Sanguinetti E, Nuutila P, Iozzo P. Imaging of Organ Metabolism in Obesity and Diabetes: Treatment Perspectives. Curr Pharm Des 2016; 20:6126-49. [PMID: 24745922 DOI: 10.2174/1381612820666140417110132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 04/15/2014] [Indexed: 11/22/2022]
Abstract
Obesity and diabetes are growing threats for cardiovascular diseases (CVD) and heart failure. In order to identify early and effective treatment or prevention targets, it is fundamental to dissect the role of each organ and the sequence of events leading from health to obesity, diabetes and cardiovascular diseases. The advancements in imaging modalities to evaluate organ-specific metabolism in humans in vivo is substantially contributing to the stratification of risk, identification of organ-specific culprits and development of targeted treatment strategies. This review summarizes the contribution provided by imaging of the heart, skeletal muscle, adipose tissue, liver, pancreas, gut and brain to the understanding of the pathogenesis and cardio-metabolic complications of obesity and diabetes, and to the monitoring of treatment responses in humans. We conclude by suggesting emerging fields of investigation, including the role of cardiac fat in the pathogenesis of cardiovascular disease, the conversion of white into brown adipose tissue in the treatment of obesity, the control of weight and energy balance by the brain, the integration between omics and imaging technologies to help establish biomarkers, and the characterization of gut metabolism in relation with the gut microbiome, opening a very promising preventive/therapeutic perspective.
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Affiliation(s)
| | | | | | | | | | - P Iozzo
- Institute of Clinical Physiology, National Research Council (CNR), Via Moruzzi 1, 56124, Pisa, Italy.
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Guzzardi MA, Iozzo P, Salonen MK, Kajantie E, Eriksson JG. Maternal adiposity and infancy growth predict later telomere length: a longitudinal cohort study. Int J Obes (Lond) 2016; 40:1063-9. [PMID: 27102052 DOI: 10.1038/ijo.2016.58] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [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: 09/02/2015] [Revised: 02/15/2016] [Accepted: 03/04/2016] [Indexed: 12/16/2022]
Abstract
BACKGROUND/OBJECTIVES Maternal overweight and obesity during pregnancy, and childhood growth patterns are risk factors influencing long-term health outcomes among the offspring. Furthermore, poor health condition has been associated with shorter leukocyte telomere length in adult subjects. We aimed to assess whether maternal adiposity during pregnancy and growth trajectory during infancy predict leukocyte telomere length (LTL) in later life. SUBJECTS/METHODS We studied a cohort of 1082 subjects belonging to the Helsinki Birth Cohort Study, born between 1934 and 1944. They underwent two clinical visits 10 years apart (2001-2004 and 2011-2013), during which LTL and anthropometrics were assessed. Birth records included birth weight, length, maternal body mass index (BMI) at the end of pregnancy. Serial measurements of height and weight from birth to 11 years were available. RESULTS Higher maternal BMI was associated with shorter LTL in elderly women (r=-0.102, P=0.024) but not in men. Also, in women but not in men shorter LTL and greater telomere shortening over a 10-year interval were predicted by higher weight at 12 months of age (P=0.008 and P=0.029, respectively), and higher weight gain during the first 12 months of life (P=0.008 and P=0.006, respectively), particularly between 6 and 9 months of age (P=0.002 for both LTL and LTL shortening rate). A correlation between younger age at adiposity rebound and shorter LTL at 60 years (P=0.022) was also found. CONCLUSIONS High maternal adiposity during pregnancy is associated with shorter LTL in elderly female offspring, but not in men. Moreover, higher weight and weight gain during the first year of life and younger age at adiposity rebound predict shorter LTL in older age in women, suggesting that rapid growth during the perinatal period accelerates cellular aging in late adulthood.
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Affiliation(s)
- M A Guzzardi
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
| | - P Iozzo
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
| | - M K Salonen
- National Institute for Health and Welfare, Chronic Disease Prevention Unit, Helsinki, Finland.,Folkhälsan Research Center, Helsinki, Finland
| | - E Kajantie
- National Institute for Health and Welfare, Chronic Disease Prevention Unit, Helsinki, Finland.,Children's Hospital, Helsinki University Hospital and University of Helsinki, Helsinki, Finland.,PEDEGO Research Unit, MRC Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - J G Eriksson
- National Institute for Health and Welfare, Chronic Disease Prevention Unit, Helsinki, Finland.,Folkhälsan Research Center, Helsinki, Finland.,Unit of General Practice, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
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35
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Honka MJ, Bucci M, Andersson J, Huovinen V, Guzzardi MA, Sandboge S, Savisto N, Salonen MK, Badeau RM, Parkkola R, Kullberg J, Iozzo P, Eriksson JG, Nuutila P. Resistance training enhances insulin suppression of endogenous glucose production in elderly women. J Appl Physiol (1985) 2016; 120:633-9. [PMID: 26744506 DOI: 10.1152/japplphysiol.00950.2015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 11/06/2015] [Accepted: 12/30/2015] [Indexed: 11/22/2022] Open
Abstract
An altered prenatal environment during maternal obesity predisposes offspring to insulin resistance, obesity, and their consequent comorbidities, type 2 diabetes and cardiovascular disease. Telomere shortening and frailty are additional risk factors for these conditions. The aim of this study was to evaluate the effects of resistance training on hepatic metabolism and ectopic fat accumulation. Thirty-five frail elderly women, whose mothers' body mass index (BMI) was known, participated in a 4-mo resistance training program. Endogenous glucose production (EGP) and hepatic and visceral fat glucose uptake were measured during euglycemic hyperinsulinemia with [(18)F]fluorodeoxyglucose and positron emission tomography. Ectopic fat was measured using magnetic resonance spectroscopy and imaging. We found that the training intervention reduced EGP during insulin stimulation [from 5.4 (interquartile range 3.0, 7.0) to 3.9 (-0.4, 6.1) μmol·kg body wt(-1)·min(-1), P = 0.042] in the whole study group. Importantly, the reduction was higher among those whose EGP was more insulin resistant at baseline (higher than the median) [-5.6 (7.1) vs. 0.1 (5.4) μmol·kg body wt(-1)·min(-1), P = 0.015]. Furthermore, the decrease in EGP was associated with telomere elongation (r = -0.620, P = 0.001). The resistance training intervention did not change either hepatic or visceral fat glucose uptake or the amounts of ectopic fat. Maternal obesity did not influence the studied measures. In conclusion, resistance training improves suppression of EGP in elderly women. The finding of improved insulin sensitivity of EGP with associated telomere lengthening implies that elderly women can reduce their risk for type 2 diabetes and cardiovascular disease with resistance training.
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Affiliation(s)
| | - Marco Bucci
- Turku PET Centre, University of Turku, Turku, Finland
| | | | - Ville Huovinen
- Turku PET Centre, University of Turku, Turku, Finland; Department of Radiology, University of Turku, Turku, Finland; Department of Radiology, Turku University Hospital, Turku, Finland
| | | | - Samuel Sandboge
- Department of Chronic Disease Prevention, National Institute of Health and Welfare, Helsinki, Finland; Folkhälsan Research Center, Helsinki, Finland
| | - Nina Savisto
- Turku PET Centre, University of Turku, Turku, Finland
| | - Minna K Salonen
- Department of Chronic Disease Prevention, National Institute of Health and Welfare, Helsinki, Finland; Folkhälsan Research Center, Helsinki, Finland
| | | | - Riitta Parkkola
- Department of Radiology, University of Turku, Turku, Finland; Department of Radiology, Turku University Hospital, Turku, Finland
| | - Joel Kullberg
- Department of Radiology, Uppsala University, Uppsala, Sweden
| | - Patricia Iozzo
- Turku PET Centre, University of Turku, Turku, Finland; Institute of Clinical Physiology, National Research Council, Pisa, Italy
| | - Johan G Eriksson
- Department of Chronic Disease Prevention, National Institute of Health and Welfare, Helsinki, Finland; Folkhälsan Research Center, Helsinki, Finland; Unit of General Practice, Hospital District of Helsinki and Uusimaa, Helsinki, Finland; Department of General Practice and Primary Health Care, University of Helsinki, Helsinki, Finland; and
| | - Pirjo Nuutila
- Turku PET Centre, University of Turku, Turku, Finland; Department of Endocrinology, Turku University Hospital, Turku, Finland
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36
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Bucci M, Huovinen V, Guzzardi MA, Koskinen S, Raiko JR, Lipponen H, Ahsan S, Badeau RM, Honka MJ, Koffert J, Savisto N, Salonen MK, Andersson J, Kullberg J, Sandboge S, Iozzo P, Eriksson JG, Nuutila P. Resistance training improves skeletal muscle insulin sensitivity in elderly offspring of overweight and obese mothers. Diabetologia 2016; 59:77-86. [PMID: 26486356 DOI: 10.1007/s00125-015-3780-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [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: 06/04/2015] [Accepted: 09/14/2015] [Indexed: 12/31/2022]
Abstract
AIMS/HYPOTHESIS Maternal obesity predisposes offspring to adulthood morbidities, including type 2 diabetes. Type 2 diabetes and insulin resistance have been associated with shortened telomere length. First, we aimed to investigate whether or not maternal obesity influences insulin sensitivity and its relationship with leucocyte telomere length (LTL) in elderly women. Second, we tested whether or not resistance exercise training improves insulin sensitivity in elderly frail women. METHODS Forty-six elderly women, of whom 20 were frail offspring of lean/normal weight mothers (OLM, BMI ≤26.3 kg/m2) and 17 were frail offspring of overweight/obese mothers (OOM,BMI ≥28.1 kg/m2), were studied before and after a 4 month resistance training (RT) intervention. Muscle insulin sensitivity of glucose uptake was measured using 18F-fluoro-2-deoxyglucose and positron emission tomography with computed tomography during a hyperinsulinaemic–euglycaemic clamp. Muscle mass and lipid content were measured using magnetic resonance and LTL was measured using real-time PCR. RESULTS The OOM group had lower thigh muscle insulin sensitivity compared with the OLM group (p=0.048) but similar whole body insulin sensitivity. RT improved whole body and skeletal muscle insulin sensitivity in the OOM group only (p=0.004 and p=0.013, respectively), and increased muscle mass in both groups (p <0 .01). In addition, in the OOM group, LTL correlated with different thigh muscle groups insulin sensitivity (ρ ≥ 0.53; p ≤ 0.05). Individuals with shorter LTL showed a higher increase in skeletal muscle insulin sensitivity after training (ρ ≥ −0.61; p ≤ 0.05). CONCLUSIONS/INTERPRETATION Maternal obesity and having telomere shortening were associated with insulin resistance in adult offspring. A resistance exercise training programme may reverse this disadvantage among offspring of obese mothers. Trial registration: ClinicalTrials.gov NCT01931540.
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Affiliation(s)
- Marco Bucci
- Turku PET Centre, University of Turku, PO BOX 52, FIN-20521, Turku, Finland.
| | - Ville Huovinen
- Turku PET Centre, University of Turku, PO BOX 52, FIN-20521, Turku, Finland
- Department of Radiology, Faculty of Medicine, University of Turku, Turku, Finland
- Department of Radiology, Medical Imaging Centre of Southwest Finland, Turku University Hospital, Turku, Finland
| | | | - Suvi Koskinen
- Turku PET Centre, University of Turku, PO BOX 52, FIN-20521, Turku, Finland
| | - Juho R Raiko
- Turku PET Centre, University of Turku, PO BOX 52, FIN-20521, Turku, Finland
| | - Heta Lipponen
- Turku PET Centre, University of Turku, PO BOX 52, FIN-20521, Turku, Finland
| | - Shaila Ahsan
- Turku PET Centre, University of Turku, PO BOX 52, FIN-20521, Turku, Finland
| | - Robert M Badeau
- Turku PET Centre, University of Turku, PO BOX 52, FIN-20521, Turku, Finland
| | | | - Jukka Koffert
- Turku PET Centre, University of Turku, PO BOX 52, FIN-20521, Turku, Finland
| | - Nina Savisto
- Turku PET Centre, University of Turku, PO BOX 52, FIN-20521, Turku, Finland
| | - Minna K Salonen
- Folkhälsan Research Centre, Helsinki, Finland
- Department of Chronic Disease Prevention, National Institute for Health and Welfare, Helsinki, Finland
| | | | - Joel Kullberg
- Department of Radiology, Uppsala University, Uppsala, Sweden
| | - Samuel Sandboge
- Folkhälsan Research Centre, Helsinki, Finland
- Department of Chronic Disease Prevention, National Institute for Health and Welfare, Helsinki, Finland
| | - Patricia Iozzo
- Turku PET Centre, University of Turku, PO BOX 52, FIN-20521, Turku, Finland
- Institute of Clinical Physiology, National Research Council, Pisa, Italy
| | - Johan G Eriksson
- Folkhälsan Research Centre, Helsinki, Finland
- Department of Chronic Disease Prevention, National Institute for Health and Welfare, Helsinki, Finland
- Department of General Practice and Primary Health Care, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Vaasa Central Hospital, Vaasa, Finland
| | - Pirjo Nuutila
- Turku PET Centre, University of Turku, PO BOX 52, FIN-20521, Turku, Finland
- Department of Endocrinology, Turku University Hospital, Turku, Finland
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Cabiati M, Svezia B, Guzzardi MA, Mattii L, D'Amico A, Caselli C, Prescimone T, Morales MA, Del Ry S. Adenosine receptor transcriptomic profile in cardiac tissue of a Zucker rat model. DNA Cell Biol 2015; 34:333-41. [PMID: 25710208 DOI: 10.1089/dna.2014.2770] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
To evaluate the possible variations of adenosine receptor (AR) profile together with TNF-α and IL-6 mRNA in cardiac tissue of obese Zucker rats (OZR) during fasting conditions (fc) and during the induction of acute hyperglycemia (AH). OZR (O, n=21) and age-matched lean control rats (CO, n=18) were studied during fc (COfc, n=8; Ofc, n=13) and during the induction of AH (COAH, n=10; OAH, n=8). The histopathologic analysis performed on O and CO heart samples did not show abnormalities of myocardial structure. The AR transcriptomic profile was analyzed in O and CO by real-time polymerase chain reaction (PCR) and a significantly lower mRNA expression was observed for A2AR in O with respect to CO (p=0.047), while a significant upregulation was observed for A3R in O with respect to CO (p=0.002). No significant differences between O and CO were observed for TNF-α or IL-6. Correlations were found between glycemia and A1R (p=0.03) and A2BR (p=0.002); total cholesterol and A2BR (p=0.02) and A3R (p=0.0002), as well as between IL-6 and A1R (p=0.05) and TNF-α and A2AR (p<0.0001). The modulation of ARs in these settings could represent a promising approach to pharmacological treatment, which must be supported by diet restrictions and physical exercise.
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Affiliation(s)
- Manuela Cabiati
- 1 CNR Institute of Clinical Physiology, Biochemical and Molecular Biology Laboratory, Laboratory of Cardiovascular Biochemistry , Pisa, Italy
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Guzzardi MA, Iozzo P, Salonen M, Kajantie E, Eriksson JG. Rate of telomere shortening and metabolic and cardiovascular risk factors: a longitudinal study in the 1934-44 Helsinki Birth Cohort Study. Ann Med 2015; 47:499-505. [PMID: 26339993 DOI: 10.3109/07853890.2015.1074718] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
INTRODUCTION Leucocyte telomere length (LTL) is associated with age-related health outcomes, but only few longitudinal studies have assessed changes in LTL in an ageing population. METHODS A total of 1,082 subjects from the Helsinki Birth Cohort Study (born 1934-1944), undergoing two clinical visits ∼10 years apart, were studied. Relative LTL was measured twice by quantitative real-time PCR. Simple and multiple regressions were used to study associations between cardiometabolic risk factors and LTL. RESULTS Telomere shortening was observed in 93.7%, and telomere elongation in 6.3% of the study participants. Telomere shortening was more rapid among males (-39.5% ± 1.1% versus -35.5% ± 1.0%, P < 0.01). In men a decrease in weight, waist circumference, BMI, and body fat percentage were all associated with telomere shortening during the follow-up (P < 0.05) independently of age and use of medication. Furthermore, higher body fat percentage and higher HDL-cholesterol level were associated with a slower rate of shortening in LTL (P < 0.05). Lower blood pressure levels were also associated with slower rate of telomere shortening in men (P < 0.05). No similar associations were observed among women. DISCUSSION A decrease in adiposity was associated with telomere shortening, and higher body fat percentage and HDL-cholesterol were associated with a slower rate of shortening in telomere length in men.
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Affiliation(s)
| | - Patricia Iozzo
- a Institute of Clinical Physiology, National Research Council (CNR) , Pisa , Italy
| | - Minna Salonen
- b National Institute for Health and Welfare , Department of Chronic Disease Prevention , Helsinki , Finland.,c Folkhälsan Research Centre , Helsinki , Finland
| | - Eero Kajantie
- b National Institute for Health and Welfare , Department of Chronic Disease Prevention , Helsinki , Finland.,d Hospital for Children and Adolescents, Helsinki University Central Hospital and University of Helsinki , Helsinki , Finland
| | - Johan G Eriksson
- b National Institute for Health and Welfare , Department of Chronic Disease Prevention , Helsinki , Finland.,c Folkhälsan Research Centre , Helsinki , Finland.,e University of Helsinki , Department of General Practice and Primary Health Care, and Helsinki University Hospital , Helsinki , Finland
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Cabiati M, Belcastro E, Caselli C, Prescimone T, D'Amico A, Guzzardi MA, Iozzo P, Giannessi D, Del Ry S. Endothelin system mRNA variation in the heart of Zucker rats: evaluation of a possible balance with natriuretic peptides. Nutr Metab Cardiovasc Dis 2014; 24:1166-1173. [PMID: 25012866 DOI: 10.1016/j.numecd.2014.05.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 04/16/2014] [Accepted: 05/13/2014] [Indexed: 10/25/2022]
Abstract
BACKGROUND AND AIMS The deregulation of neurohormonal systems, including the natriuretic peptide (NP) and endothelin (ET) systems, may increase the possibility of developing obesity-related risk. The aim of our paper was to evaluate ET system mRNA variation in heart of the Zucker rat model together with the simultaneous evaluation of the NP system transcriptomic profile. In order to analyze the link between the ET-1 system and the inflammatory process, the cardiac expression of interleukin (IL)-6 and tumor necrosis factor (TNF)-α was also measured. METHODS AND RESULTS Zucker rats of 11-13 weeks were subdivided into obese rats (O, n = 20) and controls (CO, n = 20): half of them were studied under fasting conditions (CO(fc)-O(fc)) and the remainder after the induction of acute hyperglycemia (CO(AH)-O(AH)). Cardiac mRNA expression of TNF-α, IL-6, and NP/ET-1 systems was evaluated by Real-Time polymerase chain reaction. No significant difference for pre-proET-1, ET-A, and ET-B mRNA expression was detected between O and CO, whereas significantly lower mRNA levels of the ECE-1 were observed in O (p = 0.02). Regarding NPs, only BNP mRNA expression decreased significantly in O with respect to CO (p = 0.01). A down-regulation of NPR-B and NPR-C and an up-regulation of NPR-A were observed in O. No significant difference for IL-6 and TNF-α mRNA was revealed. Subdividing into fasting and hyperglycemic rats, many of the genes studied maintained their mRNA expression pattern almost unchanged. CONCLUSIONS The modulation of ET-1/NP systems in obesity could be a useful starting point for future studies aimed at identifying new therapeutic strategies for the treatment of cardiometabolic syndrome.
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Affiliation(s)
- M Cabiati
- CNR Institute of Clinical Physiology, Pisa, Italy
| | - E Belcastro
- CNR Institute of Clinical Physiology, Pisa, Italy
| | - C Caselli
- CNR Institute of Clinical Physiology, Pisa, Italy
| | - T Prescimone
- CNR Institute of Clinical Physiology, Pisa, Italy
| | - A D'Amico
- Scuola Superiore Sant'Anna, Pisa, Italy
| | - M A Guzzardi
- CNR Institute of Clinical Physiology, Pisa, Italy
| | - P Iozzo
- CNR Institute of Clinical Physiology, Pisa, Italy
| | - D Giannessi
- CNR Institute of Clinical Physiology, Pisa, Italy
| | - S Del Ry
- CNR Institute of Clinical Physiology, Pisa, Italy.
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Guzzardi MA, Hodson L, Guiducci L, Sanguinetti E, Di Cecco P, Liistro T, Vassalle C, Pardini S, Giorgetti L, Salvadori PA, Burchielli S, Iozzo P. Independent effects of circulating glucose, insulin and NEFA on cardiac triacylglycerol accumulation and myocardial insulin resistance in a swine model. Diabetologia 2014; 57:1937-46. [PMID: 24962669 DOI: 10.1007/s00125-014-3307-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [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: 02/11/2014] [Accepted: 05/19/2014] [Indexed: 11/26/2022]
Abstract
AIMS/HYPOTHESIS Cardiac steatosis and myocardial insulin resistance elevate the risk of cardiac complications in obesity and diabetes. We aimed to disentangle the effects of circulating glucose, insulin and NEFA on myocardial triacylglycerol (TG) content and myocardial glucose uptake. METHODS Twenty-two pigs were stratified according to four protocols: low NEFA + low insulin (nicotinic acid), high NEFA + low insulin (fasting) and high insulin + low NEFA ± high glucose (hyperinsulinaemia-hyperglycaemia or hyperinsulinaemia-euglycaemia). Positron emission tomography, [U-(13)C]palmitate enrichment techniques and tissue biopsies were used to assess myocardial metabolism. Heart rate and rate-pressure product (RPP) were monitored. RESULTS Myocardial glucose extraction was increased by NEFA suppression and was similar in the hyperinsulinaemia-hypergylcaemia, hyperinsulinaemia-euglycaemia and nicotinic acid groups. Hyperglycaemia enhanced myocardial glucose uptake due to a mass action. Myocardial TG content was greatest in the fasting group, whereas hyperinsulinaemia had a mild effect. Heart rate and RPP increased in hyperinsulinaemia-euglycaemia, in which cardiac glycogen content was reduced. Heart rate correlated with myocardial TG and glycogen content. CONCLUSIONS/INTERPRETATION Elevated NEFA levels represent a powerful, self-sufficient promoter of cardiac TG accumulation and are a downregulator of myocardial glucose uptake, indicating that the focus of treatment should be to 'normalise' adipose tissue function to lower the risk of cardiac TG accumulation and myocardial insulin resistance. The observation that hyperinsulinaemia and nicotinic acid led to myocardial fuel deprivation provides a potential explanation for the cardiovascular outcomes reported in recent intensive glucose-lowering and NEFA-lowering clinical trials.
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Affiliation(s)
- Maria Angela Guzzardi
- Institute of Clinical Physiology, National Research Council (CNR), Via Moruzzi 1, 56124, Pisa, Italy
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Iozzo P, Holmes M, Schmidt MV, Cirulli F, Guzzardi MA, Berry A, Balsevich G, Andreassi MG, Wesselink JJ, Liistro T, Gómez-Puertas P, Eriksson JG, Seckl J. Developmental ORIgins of Healthy and Unhealthy AgeiNg: the role of maternal obesity--introduction to DORIAN. Obes Facts 2014; 7:130-51. [PMID: 24801105 PMCID: PMC5644840 DOI: 10.1159/000362656] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Accepted: 02/12/2014] [Indexed: 12/31/2022] Open
Abstract
Europe has the highest proportion of elderly people in the world. Cardiovascular disease, type 2 diabetes, sarcopenia and cognitive decline frequently coexist in the same aged individual, sharing common early risk factors and being mutually reinforcing. Among conditions which may contribute to establish early risk factors, this review focuses on maternal obesity, since the epidemic of obesity involves an ever growing number of women of reproductive age and children, calling for appropriate studies to understand the consequences of maternal obesity on the offspring's health and for developing effective measures and policies to improve people's health before their conception and birth. Though the current knowledge suggests that the long-term impact of maternal obesity on the offspring's health may be substantial, the outcomes of maternal obesity over the lifespan have not been quantified, and the molecular changes induced by maternal obesity remain poorly characterized. We hypothesize that maternal insulin resistance and reduced placental glucocorticoid catabolism, leading to oxidative stress, may damage the DNA, either in its structure (telomere shortening) or in its function (via epigenetic changes), resulting in altered gene expression/repair, disease during life, and pathological ageing. This review illustrates the background to the EU-FP7-HEALTH-DORIAN project.
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Affiliation(s)
- Patricia Iozzo
- Institute of Clinical Physiology, National Research Council (CNR), Pis
- *Patricia Iozzo, MD, PhD, Institute of Clinical Physiology, National Research Council (CNR), Via Moruzzi 1, 56124 Pisa (Italy),
| | - Megan Holmes
- Endocrinology Unit, Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
| | | | | | | | | | | | | | | | - Tiziana Liistro
- Institute of Clinical Physiology, National Research Council (CNR), Pis
| | | | - Johan G. Eriksson
- Samfundet Folkhälsan i Svenska Finland rf (Folkhälsan), Helsinki, Finland
- Department of General Practice and Primary Health Care, University of Helsinki, Helsinki, Finland
| | - Jonathan Seckl
- Endocrinology Unit, Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
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Valvano G, Orsi G, Guzzardi MA, Vozzi F, Vozzi G. CREPE: mathematical model for crosstalking of endothelial cells and hepatocyte metabolism. IEEE Trans Biomed Eng 2013; 61:224-30. [PMID: 23864152 DOI: 10.1109/tbme.2013.2272942] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The liver shows a close coexistence between endothelial cells and hepatocytes (HepG2). Endothelial cells' main purpose is to protect (HepG2) from blood vessel shear stress, acting as a barrier, but experimental evidence suggests that they could also play a role in regulating (HepG2) glucose metabolism. A well-known singular effect in hepatocyte-endothelial co-cultures is the reduction of glucose consumption respect to (HepG2) in single culture. (HepG2) were shown to reduce their glucose consumption supporting energy needs of endothelial cells. Monti have studied the effects of endothelin-1 (Et-1) on Glucokinase activity in adult rat (HepG2). They observed a reduction in hepatocytes Glucokinase catalytic rate, which is dependent on Et-1 concentration. We developed crosstalking of endothelial cells and hepatocyte metabolism (CREPE) that is a mathematical model of the endothelin-1 mediated crosstalk between HepG2 and endothelial cells (human umbilical vein endothelial cells) in a traditional static co-culture system. CREPE was validated against experimental data, showing good agreement with them. CREPE can be a starting point to develop predictive tools on complex and highly interconnected environments.
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Izamis ML, Calhoun C, Uygun BE, Guzzardi MA, Price G, Luitje M, Saeidi N, Yarmush ML, Uygun K. SIMPLE MACHINE PERFUSION SIGNIFICANTLY ENHANCES HEPATOCYTE YIELDS OF ISCHEMIC AND FRESH RAT LIVERS. Cell Med 2013; 4:109-123. [PMID: 25431743 PMCID: PMC4243527 DOI: 10.3727/215517912x658927] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The scarcity of viable hepatocytes is a significant bottleneck in cell transplantation, drug discovery, toxicology, tissue engineering, and bioartificial assist devices, where trillions of high-functioning hepatocytes are needed annually. We took the novel approach of using machine perfusion to maximize cell recovery, specifically from uncontrolled cardiac death donors, the largest source of disqualified donor organs. In a rat model, we developed a simple 3 hour room temperature (20±2°C) machine perfusion protocol to treat non-premedicated livers exposed to 1 hour of warm (34°C) ischemia. Treated ischemic livers were compared to fresh, fresh-treated and untreated ischemic livers using viable hepatocyte yields and in vitro performance as quantitative endpoints. Perfusion treatment resulted in both a 25-fold increase in viable hepatocytes from ischemic livers, and a 40% increase from fresh livers. While cell morphology and function in suspension and plate cultures of untreated warm ischemic cells was significantly impaired, treated warm ischemic cells were indistinguishable from fresh hepatocytes. Further, a strong linear correlation between tissue ATP and cell yield enabled accurate evaluation of the extent of perfusion recovery. Maximal recovery of warm ischemic liver ATP content appears to be correlated with optimal flow through the microvasculature. These data demonstrate that the inclusion of a simple perfusion-preconditioning step can significantly increase the efficiency of functional hepatocyte yields and the number of donor livers that can be gainfully utilized.
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Affiliation(s)
- Maria-Louisa Izamis
- *Center for Engineering in Medicine, Massachusetts General Hospital, Harvard Medical School, Shriners Hospitals for Children, Boston, MA, USA
| | - Candice Calhoun
- *Center for Engineering in Medicine, Massachusetts General Hospital, Harvard Medical School, Shriners Hospitals for Children, Boston, MA, USA
| | - Basak E. Uygun
- *Center for Engineering in Medicine, Massachusetts General Hospital, Harvard Medical School, Shriners Hospitals for Children, Boston, MA, USA
| | - Maria Angela Guzzardi
- *Center for Engineering in Medicine, Massachusetts General Hospital, Harvard Medical School, Shriners Hospitals for Children, Boston, MA, USA
| | - Gavrielle Price
- *Center for Engineering in Medicine, Massachusetts General Hospital, Harvard Medical School, Shriners Hospitals for Children, Boston, MA, USA
| | - Martha Luitje
- *Center for Engineering in Medicine, Massachusetts General Hospital, Harvard Medical School, Shriners Hospitals for Children, Boston, MA, USA
| | - Nima Saeidi
- *Center for Engineering in Medicine, Massachusetts General Hospital, Harvard Medical School, Shriners Hospitals for Children, Boston, MA, USA
| | - Martin L. Yarmush
- *Center for Engineering in Medicine, Massachusetts General Hospital, Harvard Medical School, Shriners Hospitals for Children, Boston, MA, USA
- †Department of Biomedical Engineering, Rutgers University, Piscataway, NJ, USA
| | - Korkut Uygun
- *Center for Engineering in Medicine, Massachusetts General Hospital, Harvard Medical School, Shriners Hospitals for Children, Boston, MA, USA
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Iozzo P, Viljanen A, Guzzardi MA, Laine H, Honka MJ, Ferrannini E, Nuutila P. The interaction of blood flow, insulin, and bradykinin in regulating glucose uptake in lower-body adipose tissue in lean and obese subjects. J Clin Endocrinol Metab 2012; 97:E1192-6. [PMID: 22523335 DOI: 10.1210/jc.2011-3245] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [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] [Indexed: 11/19/2022]
Abstract
CONTEXT Impaired adipose tissue (AT) blood flow has been implicated in the pathogenesis of insulin resistance in obesity. Insulin and bradykinin are meal-stimulated promoters of AT blood flow and glucose metabolism. OBJECTIVE We tested whether blood flow regulates glucose metabolism in AT, insulin and bradykinin exert additive effects on AT blood flow and metabolism, and any of these actions explains the insulin resistance observed in obese individuals. DESIGN Perfusion and glucose metabolism in the AT of the thighs were studied by positron emission tomography and H(2)(15)O (flow tracer) and (18)F-2-fluoro-2-deoxyglucose. Study I included five subjects in whom positron emission tomography imaging was performed in the fasting state during intraarterial infusion of bradykinin in the left leg; the right leg served as a control. Study II included seven lean and eight obese subjects in whom the imaging protocol was performed during euglycemic hyperinsulinemia. RESULTS Bradykinin alone doubled fasting AT blood flow without modifying glucose uptake. Hyperinsulinemia increased AT blood flow (P ≤ 0.05) similarly in lean and obese individuals. In the lean group, bradykinin increased insulin-mediated AT glucose uptake from 8.6 ± 1.6 to 12.3 ± 2.4 μmol/min · kg (P = 0.038). In the obese group, AT glucose uptake was impaired (5.0 ± 1.0 μmol/min · kg, P = 0.05 vs. the lean group), and bradykinin did not exert any metabolic action (6.0 ± 0.8 μmol/min · kg, P = 0.01 vs. the lean group). CONCLUSION AT blood flow is not an independent regulator of AT glucose metabolism. Insulin is a potent stimulator of AT blood flow, and bradykinin potentiates the hemodynamic and metabolic actions of insulin in lean but not in obese individuals.
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Affiliation(s)
- P Iozzo
- Turku PET Centre, Turku University and Turku University Hospital, PL 52, 20521 Turku, Finland.
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Cabiati M, Raucci S, Caselli C, Guzzardi MA, D'Amico A, Prescimone T, Giannessi D, Del Ry S. Tissue-specific selection of stable reference genes for real-time PCR normalization in an obese rat model. J Mol Endocrinol 2012; 48:251-60. [PMID: 22493144 DOI: 10.1530/jme-12-0024] [Citation(s) in RCA: 45] [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] [Indexed: 12/27/2022]
Abstract
Obesity is a complex pathology with interacting and confounding causes due to the environment, hormonal signaling patterns, and genetic predisposition. At present, the Zucker rat is an eligible genetic model for research on obesity and metabolic syndrome, allowing scrutiny of gene expression profiles. Real-time PCR is the benchmark method for measuring mRNA expressions, but the accuracy and reproducibility of its data greatly depend on appropriate normalization strategies. In the Zucker rat model, no specific reference genes have been identified in myocardium, kidney, and lung, the main organs involved in this syndrome. The aim of this study was to select among ten candidates (Actb, Gapdh, Polr2a, Ywhag, Rpl13a, Sdha, Ppia, Tbp, Hprt1 and Tfrc) a set of reference genes that can be used for the normalization of mRNA expression data obtained by real-time PCR in obese and lean Zucker rats both at fasting and during acute hyperglycemia. The most stable genes in the heart were Sdha, Tbp, and Hprt1; in kidney, Tbp, Actb, and Gapdh were chosen, while Actb, Ywhag, and Sdha were selected as the most stably expressed set for pulmonary tissue. The normalization strategy was used to analyze mRNA expression of tumor necrosis factor α, the main inflammatory mediator in obesity, whose variations were more significant when normalized with the appropriately selected reference genes. The findings obtained in this study underline the importance of having three stably expressed reference gene sets for use in the cardiac, renal, and pulmonary tissues of an experimental model of obese and hyperglycemic Zucker rats.
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Affiliation(s)
- Manuela Cabiati
- Laboratory of Cardiovascular Biochemistry, CNR Institute of Clinical Physiology, Via Giuseppe Moruzzi 1, 56124 Pisa, Italy
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Iozzo P, Guiducci L, Guzzardi MA, Pagotto U. Brain PET imaging in obesity and food addiction: current evidence and hypothesis. Obes Facts 2012; 5:155-64. [PMID: 22647299 DOI: 10.1159/000338328] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [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: 07/08/2011] [Accepted: 02/09/2012] [Indexed: 11/19/2022] Open
Abstract
The ongoing epidemics of obesity is one main health concern of the present time. Overeating in some obese individuals shares similarities with the loss of control and compulsive behavior observed in drug-addicted subjects, suggesting that obesity may involve food addiction. Here, we review the contributions provided by the use of positron emission tomography to the current understanding of the cerebral control of obesity and food intake in humans. The available studies have shown that multiple areas in the brain are involved with the reward properties of food, such as prefrontal, orbitofrontal, somatosensory cortices, insula, thalamus, hypothalamus, amygdala, and others. This review summarizes the current evidence, supporting the concepts that i) regions involved in the somatosensory response to food sight, taste, and smell are activated by palatable foods and may be hyperresponsive in obese individuals, ii) areas controlling executive drive seem to overreact to the anticipation of pleasure during cue exposure, and iii) those involved in cognitive control and inhibitory behavior may be resistant to the perception of reward after food exposure in obese subjects. All of these features may stimulate, for different reasons, ingestion of highly palatable and energy-rich foods. Though these same regions are similarly involved in drug abusers and game-addicted individuals, any direct resemblance may be an oversimplification, especially as the heterogeneities between studies and the prevalent exclusion of sensitive groups still limit a coherent interpretation of the findings. Further work is required to comprehensively tackle the multifaceted phenotype of obesity and identify the role of food dependency in its pathophysiology.
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Affiliation(s)
- Patricia Iozzo
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
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Guzzardi MA, Domenici C, Ahluwalia A. Metabolic control through hepatocyte and adipose tissue cross-talk in a multicompartmental modular bioreactor. Tissue Eng Part A 2011; 17:1635-42. [PMID: 21303256 DOI: 10.1089/ten.tea.2010.0541] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Physiological processes involve a complex network of signaling molecules that act through paracrinal or endocrinal pathways; however, traditional in vitro models cannot mimic these interactions because of the lack of a dynamic cross-talk between cells belonging to different tissues. The multicompartmental modular bioreactor is a novel cell culture system where hepatocytes and adipose tissue are shown to interact in a more physiological manner. In the multicompartmental modular bioreactor, cells and tissues can be cultured in a common medium, which flows through the system acting as the bloodstream. Primary rat hepatocytes and adipose tissue were cultured separately and together in conventional conditions and in the bioreactor. Urea synthesis, albumin secretion, glycerol, free fatty acid, and glucose concentrations were analyzed and compared. The dynamic connected culture of adipose tissue and hepatocytes led to a significant enhancement of hepatic function in terms of increase of albumin and urea production with respect to conventional cultures. Interestingly, the glycerol gradually released from adipose tissue was buffered in the dynamic connected culture, manifesting a homeostatic-like control. These data show that the dynamic culture not only improves hepatocyte function, but also allows a cross-talk between tissues, leading to enhanced metabolic regulation in vitro.
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Affiliation(s)
- Maria Angela Guzzardi
- Scuola Superiore Sant'Anna, Sector of Medicine, Piazza Martiri della Liberta', Pisa, Italy.
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Mazzei D, Guzzardi MA, Giusti S, Ahluwalia A. A low shear stress modular bioreactor for connected cell culture under high flow rates. Biotechnol Bioeng 2010; 106:127-37. [PMID: 20091740 DOI: 10.1002/bit.22671] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A generic "system on a plate" modular multicompartmental bioreactor array which enables microwell protocols to be transferred directly to the bioreactor modules, without redesign of cell culture experiments or protocols is described. The modular bioreactors are simple to assemble and use and can be easily compared with standard controls since cell numbers and medium volumes are quite similar. Starting from fluid dynamic and mass transport considerations, a modular bioreactor chamber was first modeled and then fabricated using "milli-molding," a technique adapted from soft lithography. After confirming that the shear stress was extremely low in the system in the range of useful flow rates, the bioreactor chambers were tested using hepatocytes. The results show that the bioreactor chambers can increase or maintain cell viability and function when the flow rates are below 500 microL/min, corresponding to wall shear stresses of 10(-5) Pa or less at the cell culture surface.
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Affiliation(s)
- D Mazzei
- Faculty of Engineering, Interdepartmental Research Center E. Piaggio, University of Pisa, Pisa, Italy.
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Guzzardi MA, Vozzi F, Ahluwalia AD. Study of the Crosstalk Between Hepatocytes and Endothelial Cells Using a Novel Multicompartmental Bioreactor: A Comparison Between Connected Cultures and Cocultures. Tissue Eng Part A 2009; 15:3635-44. [DOI: 10.1089/ten.tea.2008.0695] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Maria Angela Guzzardi
- Institute of Clinical Physiology-CNR, Pisa, Italy
- Sector of Medicine, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Federico Vozzi
- Institute of Clinical Physiology-CNR, Pisa, Italy
- Faculty of Engineering, Interdepartmental Research Center “E.Piaggio,” University of Pisa, Pisa, Italy
| | - Arti Devi Ahluwalia
- Faculty of Engineering, Interdepartmental Research Center “E.Piaggio,” University of Pisa, Pisa, Italy
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Dean BS, Guzzardi MA, Krenzelok EP. Performance management: an essential program for poison centers. Vet Hum Toxicol 1987; 29:169-71. [PMID: 3576954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Medico-legal liability and cost effectiveness mandate that poison information specialist performance be optimal. To maximize performance we developed and implemented a performance management program to achieve the objectives of high quality assurance in a cost-effective environment. The program can objectively assess, monitor, develop, discipline and financially compensate poison center staff. The performance standards, jointly developed by the staff and management, are the cornerstone of the program. They serve as a means of measuring and quantifying poison information specialist performance based upon compliance with responsibilities outlined in the standards. Our program enables the poison information specialist to optimize performance and also be cognizant of suboptimal work. Each staff person works with management to develop personal goals, objectives, and a plan for professional growth. Performance standards facilitate good management by improving communication, providing objective feedback, making orientation consistent, and providing an objective basis for promotion and compensation. They also provide an objective basis for dismissing unsatisfactory employees when performance is consistently suboptimal. Since personnel salaries account for 80% of a poison center's budget, effective performance management is essential.
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