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Yu Y, Su Y, Wang G, Lan M, Liu J, Garcia Martin R, Brandao BB, Lino M, Li L, Liu C, Kahn CR, Meng Q. Reciprocal communication between FAPs and muscle cells via distinct extracellular vesicle miRNAs in muscle regeneration. Proc Natl Acad Sci U S A 2024; 121:e2316544121. [PMID: 38442155 PMCID: PMC10945765 DOI: 10.1073/pnas.2316544121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 02/06/2024] [Indexed: 03/07/2024] Open
Abstract
Muscle regeneration is a complex process relying on precise teamwork between multiple cell types, including muscle stem cells (MuSCs) and fibroadipogenic progenitors (FAPs). FAPs are also the main source of intramuscular adipose tissue (IMAT). Muscles without FAPs exhibit decreased IMAT infiltration but also deficient muscle regeneration, indicating the importance of FAPs in the repair process. Here, we demonstrate the presence of bidirectional crosstalk between FAPs and MuSCs via their secretion of extracellular vesicles (EVs) containing distinct clusters of miRNAs that is crucial for normal muscle regeneration. Thus, after acute muscle injury, there is activation of FAPs leading to a transient rise in IMAT. These FAPs also release EVs enriched with a selected group of miRNAs, a number of which come from an imprinted region on chromosome 12. The most abundant of these is miR-127-3p, which targets the sphingosine-1-phosphate receptor S1pr3 and activates myogenesis. Indeed, intramuscular injection of EVs from immortalized FAPs speeds regeneration of injured muscle. In late stages of muscle repair, in a feedback loop, MuSCs and their derived myoblasts/myotubes secrete EVs enriched in miR-206-3p and miR-27a/b-3p. The miRNAs repress FAP adipogenesis, allowing full muscle regeneration. Together, the reciprocal communication between FAPs and muscle cells via miRNAs in their secreted EVs plays a critical role in limiting IMAT infiltration while stimulating muscle regeneration, hence providing an important mechanism for skeletal muscle repair and homeostasis.
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Affiliation(s)
- Yingying Yu
- State Key Laboratory of Animal Biotech Breeding, College of Biological Sciences, Department of Genetics and Molecular biology, China Agricultural University, Beijing100193, China
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, Boston, MA02215
| | - Yang Su
- State Key Laboratory of Animal Biotech Breeding, College of Biological Sciences, Department of Genetics and Molecular biology, China Agricultural University, Beijing100193, China
- Department of Cell Biology, Third Military Medical University, Chongqing400038, China
| | - Guoxiao Wang
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, Boston, MA02215
| | - Miaomiao Lan
- State Key Laboratory of Animal Biotech Breeding, College of Biological Sciences, Department of Genetics and Molecular biology, China Agricultural University, Beijing100193, China
| | - Jin Liu
- State Key Laboratory of Animal Biotech Breeding, College of Biological Sciences, Department of Genetics and Molecular biology, China Agricultural University, Beijing100193, China
| | - Ruben Garcia Martin
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, Boston, MA02215
| | - Bruna Brasil Brandao
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, Boston, MA02215
| | - Marsel Lino
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, Boston, MA02215
| | - Lei Li
- State Key Laboratory of Animal Biotech Breeding, College of Biological Sciences, Department of Genetics and Molecular biology, China Agricultural University, Beijing100193, China
| | - Chang Liu
- State Key Laboratory of Animal Biotech Breeding, College of Biological Sciences, Department of Genetics and Molecular biology, China Agricultural University, Beijing100193, China
| | - C. Ronald Kahn
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, Boston, MA02215
| | - Qingyong Meng
- State Key Laboratory of Animal Biotech Breeding, College of Biological Sciences, Department of Genetics and Molecular biology, China Agricultural University, Beijing100193, China
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2
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Muñoz VR, Vieira RFL, Katashima CK, Gaspar RC, Lino M, Trombeta JCDS, Duft RG, Azevêdo Macêdo AP, da Silva ASR, Ropelle ER, de Moura LP, Cintra DE, Chacon-Mikahil MPT, Cavaglieri CR, Pauli JR. Rho-Kinase Is Differentially Expressed in the Adipose Tissue of Rodent and Human in Response to Aging, Sex, and Acute Exercise. J Gerontol A Biol Sci Med Sci 2024; 79:glae001. [PMID: 38197701 DOI: 10.1093/gerona/glae001] [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] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Indexed: 01/11/2024] Open
Abstract
White adipose tissue (WAT) controls energy storage, expenditure, and endocrine function. Rho-kinase (ROCK) is related to impaired thermogenesis, downregulation of preadipocyte differentiation, and adipokine production. Furthermore, WAT ROCK responds to metabolic stress from high-fat diets or diabetes. However, ROCK distribution in adipose depots and its response to aging and sex remain unclear. Thus, we aim to investigate ROCK function in adipose tissue of rodent and human in response to aging and sex. We observed specific differences in the ROCK1/2 distribution in inguinal WAT (ingWAT), perigonadal WAT (pgWAT), and brown adipose tissue of male and female rodents. However, ROCK2 expression was lower in female ingWAT compared with males, a fact that was not observed in the other depots. In the pgWAT and ingWAT of male and female rodents, ROCK activity increased during development. Moreover, middle-aged female rodents and humans showed downregulation in ROCK activity after acute physical exercise. Interestingly, ROCK levels were associated with several inflammatory markers both in rats and humans WAT (Nfkb1, Tnf, Il1b, Il6, and Mcp1). Induction of cell senescence by etoposide elevates ROCK activity in human preadipocytes; however, silencing ROCK1/2 demonstrates improvement in the inflammatory and cell senescence state. Using public databases, several pathways were strongly associated with ROCK modulation in WAT. In summary, WAT ROCK increases with development in association with inflammatory markers. Further, ROCK activity was attenuated by acute physical exercise, implicating it as a possible therapeutic target for metabolism improvement mediated by adipose tissue inflammatory state changes.
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Affiliation(s)
- Vitor Rosetto Muñoz
- Laboratory of Molecular Biology of Exercise, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
- Section of Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Renan Fudoli Lins Vieira
- Laboratory of Molecular Biology of Exercise, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Carlos Kiyoshi Katashima
- Laboratory of Molecular Biology of Exercise, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Rafael Calais Gaspar
- Laboratory of Molecular Biology of Exercise, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Marsel Lino
- Section of Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | | | - Renata Garbellini Duft
- Exercise Physiology Laboratory (FISEX), Faculty of Physical Education, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Ana Paula Azevêdo Macêdo
- Laboratory of Molecular Biology of Exercise, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Adelino Sanchez Ramos da Silva
- Postgraduate Program in Rehabilitation and Functional Performance, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
- School of Physical Education and Sport of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - Eduardo Rochete Ropelle
- Laboratory of Molecular Biology of Exercise, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
- OCRC-Obesity and Comorbidities Research Center, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Leandro Pereira de Moura
- Laboratory of Molecular Biology of Exercise, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | - Dennys Esper Cintra
- OCRC-Obesity and Comorbidities Research Center, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
- Laboratory of Nutritional Genomics, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
| | | | - Cláudia Regina Cavaglieri
- Exercise Physiology Laboratory (FISEX), Faculty of Physical Education, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - José Rodrigo Pauli
- Laboratory of Molecular Biology of Exercise, University of Campinas (UNICAMP), Limeira, São Paulo, Brazil
- OCRC-Obesity and Comorbidities Research Center, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
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3
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Baboota RK, Spinelli R, Erlandsson MC, Brandao BB, Lino M, Yang H, Mardinoglu A, Bokarewa MI, Boucher J, Kahn CR, Smith U. Chronic hyperinsulinemia promotes human hepatocyte senescence. Mol Metab 2022; 64:101558. [PMID: 35872305 PMCID: PMC9364104 DOI: 10.1016/j.molmet.2022.101558] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/14/2022] [Accepted: 07/19/2022] [Indexed: 02/02/2023] Open
Abstract
OBJECTIVE Cellular senescence, an irreversible proliferative cell arrest, is caused by excessive intracellular or extracellular stress/damage. Increased senescent cells have been identified in multiple tissues in different metabolic and other aging-related diseases. Recently, several human and mouse studies emphasized the involvement of senescence in development and progression of NAFLD. Hyperinsulinemia, seen in obesity, metabolic syndrome, and other conditions of insulin resistance, has been linked to senescence in adipocytes and neurons. Here, we investigate the possible direct role of chronic hyperinsulinemia in the development of senescence in human hepatocytes. METHODS Using fluorescence microscopy, immunoblotting, and gene expression, we tested senescence markers in human hepatocytes subjected to chronic hyperinsulinemia in vitro and validated the data in vivo by using liver-specific insulin receptor knockout (LIRKO) mice. The consequences of hyperinsulinemia were also studied in senescent hepatocytes following doxorubicin as a model of stress-induced senescence. Furthermore, the effects of senolytic agents in insulin- and doxorubicin-treated cells were analyzed. RESULTS Results showed that exposing the hepatocytes to prolonged hyperinsulinemia promotes the onset of senescence by increasing the expression of p53 and p21. It also further enhanced the senescent phenotype in already senescent hepatocytes. Addition of insulin signaling pathway inhibitors prevented the increase in cell senescence, supporting the direct contribution of insulin. Furthermore, LIRKO mice, in which insulin signaling in the liver is abolished due to deletion of the insulin receptor gene, showed no differences in senescence compared to their wild-type counterparts despite having marked hyperinsulinemia indicating these are receptor-mediated effects. In contrast, the persistent hyperinsulinemia in LIRKO mice enhanced senescence in white adipose tissue. In vitro, senolytic agents dasatinib and quercetin reduced the prosenescent effects of hyperinsulinemia in hepatocytes. CONCLUSION Our findings demonstrate a direct link between chronic hyperinsulinemia and hepatocyte senescence. This effect can be blocked by reducing the levels of insulin receptors or administration of senolytic drugs, such as dasatinib and quercetin.
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Affiliation(s)
- Ritesh K. Baboota
- Lundberg Laboratory for Diabetes Research, Department of Molecular and Clinical Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Rosa Spinelli
- Lundberg Laboratory for Diabetes Research, Department of Molecular and Clinical Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden,Department of Translational Medical Sciences, Federico II University of Naples, Naples, Italy,URT Genomics of Diabetes, Institute of Experimental Endocrinology and Oncology, National Research Council, Naples, Italy
| | - Malin C. Erlandsson
- Department of Rheumatology and Inflammation Research, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden,Rheumatology Clinic, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Bruna B. Brandao
- Joslin Diabetes Center and Harvard Medical School, One Joslin Place, Boston, MA, USA
| | - Marsel Lino
- Joslin Diabetes Center and Harvard Medical School, One Joslin Place, Boston, MA, USA
| | - Hong Yang
- Science for Life Laboratory, KTH—Royal Institute of Technology, Stockholm, Sweden
| | - Adil Mardinoglu
- Science for Life Laboratory, KTH—Royal Institute of Technology, Stockholm, Sweden
| | - Maria I. Bokarewa
- Department of Rheumatology and Inflammation Research, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden,Rheumatology Clinic, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Jeremie Boucher
- Lundberg Laboratory for Diabetes Research, Department of Molecular and Clinical Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden,Metabolic Disease, Evotec International GmbH, Göttingen, Germany
| | - C. Ronald Kahn
- Joslin Diabetes Center and Harvard Medical School, One Joslin Place, Boston, MA, USA
| | - Ulf Smith
- Lundberg Laboratory for Diabetes Research, Department of Molecular and Clinical Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden,Corresponding author. The Lundberg Laboratory for Diabetes Research, Department of Molecular and Clinical Medicine, Sahlgrenska University Hospital, Blå Stråket 5, SE-413 45, Gothenburg, Sweden.
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4
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Ngai D, Mohabeer AL, Mao A, Lino M, Bendeck MP. Stiffness-Responsive Feedback Autoregulation of DDR1 Expression is Mediated by a DDR1-YAP/TAZ Axis. Matrix Biol 2022; 110:129-140. [PMID: 35562016 DOI: 10.1016/j.matbio.2022.05.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [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: 08/16/2021] [Revised: 05/02/2022] [Accepted: 05/05/2022] [Indexed: 12/25/2022]
Abstract
OBJECTIVE Increased matrix stiffness is sensed by the collagen-binding receptor tyrosine kinase discoidin domain receptor 1 (DDR1). We have previously shown that DDR1 stimulates a positive feedback loop to increase its own expression in vascular smooth muscle cells (VSMCs). The transcriptional co-factors YAP/TAZ are stiffness sensing molecules that have not previously been investigated in DDR1 signaling. Here, we test the hypothesis that DDR1 signals through YAP/TAZ to auto-regulate its own expression. APPROACH AND RESULTS We used vascular smooth muscle cells (VSMCs) from wild-type and DDR1 knockout mice stimulated with collagen and/or substrates of different stiffness. We show that DDR1 controls YAP/TAZ nuclear localization and activity, whereas knockdown of YAP/TAZ attenuates DDR1 expression. In response to increased substrate stiffness, collagen stimulation, or RhoA activation, YAP/TAZ translocate to the nucleus and bind to chromatin. Finally, collagen stimulation promotes increased YAP/TAZ association with the Ddr1 promoter. CONCLUSIONS These findings reveal the mechanism by which DDR1 regulates YAP/TAZ activity which can then mediate positive feedback regulation of DDR1 expression by promoting transcription of the DDR1 gene.
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Affiliation(s)
- David Ngai
- Department of Laboratory Medicine and Pathobiology, University of Toronto; Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto
| | - Amanda L Mohabeer
- Department of Laboratory Medicine and Pathobiology, University of Toronto; Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto
| | - Amanda Mao
- Department of Laboratory Medicine and Pathobiology, University of Toronto; Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto
| | - Marsel Lino
- Department of Laboratory Medicine and Pathobiology, University of Toronto; Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto
| | - Michelle P Bendeck
- Department of Laboratory Medicine and Pathobiology, University of Toronto; Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto.
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5
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Abstract
Extracellular miRNAs are found in a variety of body fluids and mediate intercellular and interorgan communication, thus regulating gene expression and cellular metabolism. These miRNAs are secreted either in small vesicles/exosomes (sEV) or bound to proteins such as Argonaute and high-density lipoprotein. Both exosomal and protein-bound circulating miRNAs are altered in obesity. Although all tissues can contribute to changes in circulating miRNAs, adipose tissue itself is an important source of these miRNAs, especially those in sEVs. These are derived from both adipocytes and macrophages and participate in crosstalk between these cells, as well as peripheral tissues, including liver, skeletal muscle and pancreas, whose function may be impaired in obesity. Changes in levels of circulating miRNAs have also been linked to the beneficial effects induced by weight loss interventions, including diet, exercise and bariatric surgery, further indicating a role for these miRNAs as mediators of disease pathogenesis. Here, we review the role of circulating miRNAs in the pathophysiology of obesity and explore their potential use as biomarkers and in therapy of obesity-associated metabolic syndrome.
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Affiliation(s)
- Bruna Brasil Brandao
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215
| | - Marsel Lino
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215
| | - C. Ronald Kahn
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215
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6
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Ngai D, Lino M, Rothenberg KE, Simmons CA, Fernandez-Gonzalez R, Bendeck MP. DDR1 (Discoidin Domain Receptor-1)-RhoA (Ras Homolog Family Member A) Axis Senses Matrix Stiffness to Promote Vascular Calcification. Arterioscler Thromb Vasc Biol 2020; 40:1763-1776. [PMID: 32493168 PMCID: PMC7310304 DOI: 10.1161/atvbaha.120.314697] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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] [Indexed: 12/20/2022]
Abstract
Supplemental Digital Content is available in the text. Objective: Vascular calcification is a pathology characterized by arterial mineralization, which is a common late-term complication of atherosclerosis that independently increases the risk of adverse cardiovascular events by fourfold. A major source of calcifying cells is transdifferentiating vascular smooth muscle cells (VSMCs). Previous studies showed that deletion of the collagen-binding receptor, DDR1 (discoidin domain receptor-1), attenuated VSMC calcification. Increased matrix stiffness drives osteogenesis, and DDR1 has been implicated in stiffness sensing in other cell types; however, the role of DDR1 as a mechanosensor in VSMCs has not been investigated. Here, we test the hypothesis that DDR1 senses increased matrix stiffness and promotes VSMC transdifferentiation and calcification. Approach and Results: Primary VSMCs isolated from Ddr1+/+ (wild-type) and Ddr1−/− (knockout) mice were studied on collagen-I–coated silicon substrates of varying stiffness, culturing in normal or calcifying medium. DDR1 expression and phosphorylation increased with increasing stiffness, as did in vitro calcification, nuclear localization of Runx2 (Runt-related transcription factor 2), and expression of other osteochondrocytic markers. By contrast, DDR1 deficient VSMCs were not responsive to stiffness and did not undergo transdifferentiation. DDR1 regulated stress fiber formation and RhoA (ras homolog family member A) activation through the RhoGEF (rho guanine nucleotide exchange factor), Vav2. Inhibition of actomyosin contractility reduced Runx2 activation and attenuated in vitro calcification in wild-type VSMCs. Finally, a novel positive feedforward loop was uncovered between DDR1 and actomyosin contractility, important in regulating DDR1 expression, clustering, and activation. Conclusions: This study provides mechanistic insights into DDR1 mechanosignaling and shows that DDR1 activity and actomyosin contractility are interdependent in mediating stiffness-dependent increases in VSMC calcification.
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Affiliation(s)
- David Ngai
- From the Department of Laboratory Medicine and Pathobiology (D.N., M.L., M.P.B.), University of Toronto, Canada.,Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research (D.N. M.L., K.E.R., C.A.S., R.F.-G., M.P.B.), University of Toronto, Canada
| | - Marsel Lino
- From the Department of Laboratory Medicine and Pathobiology (D.N., M.L., M.P.B.), University of Toronto, Canada.,Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research (D.N. M.L., K.E.R., C.A.S., R.F.-G., M.P.B.), University of Toronto, Canada
| | - Katheryn E Rothenberg
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research (D.N. M.L., K.E.R., C.A.S., R.F.-G., M.P.B.), University of Toronto, Canada.,Institute of Biomaterials and Biomedical Engineering (K.E.R., C.A.S., R.F.-G.), University of Toronto, Canada
| | - Craig A Simmons
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research (D.N. M.L., K.E.R., C.A.S., R.F.-G., M.P.B.), University of Toronto, Canada.,Institute of Biomaterials and Biomedical Engineering (K.E.R., C.A.S., R.F.-G.), University of Toronto, Canada.,Department of Mechanical and Industrial Engineering (C.A.S.), University of Toronto, Canada
| | - Rodrigo Fernandez-Gonzalez
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research (D.N. M.L., K.E.R., C.A.S., R.F.-G., M.P.B.), University of Toronto, Canada.,Institute of Biomaterials and Biomedical Engineering (K.E.R., C.A.S., R.F.-G.), University of Toronto, Canada.,Department of Cell and Systems Biology (R.F.-G.), University of Toronto, Canada
| | - Michelle P Bendeck
- From the Department of Laboratory Medicine and Pathobiology (D.N., M.L., M.P.B.), University of Toronto, Canada.,Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research (D.N. M.L., K.E.R., C.A.S., R.F.-G., M.P.B.), University of Toronto, Canada
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7
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Lino M, Wan MH, Rocca AS, Ngai D, Shobeiri N, Hou G, Ge C, Franceschi RT, Bendeck MP. Diabetic Vascular Calcification Mediated by the Collagen Receptor Discoidin Domain Receptor 1 via the Phosphoinositide 3-Kinase/Akt/Runt-Related Transcription Factor 2 Signaling Axis. Arterioscler Thromb Vasc Biol 2019; 38:1878-1889. [PMID: 29930002 DOI: 10.1161/atvbaha.118.311238] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Objective- Vascular calcification is a common and severe complication in patients with atherosclerosis which is exacerbated by type 2 diabetes mellitus. Our laboratory recently reported that the collagen receptor discoidin domain receptor 1 (DDR1) mediates vascular calcification in atherosclerosis; however, the underlying mechanisms are unknown. During calcification, vascular smooth muscle cells transdifferentiate into osteoblast-like cells, in a process driven by the transcription factor RUNX2 (runt-related transcription factor 2). DDR1 signals via the phosphoinositide 3-kinase/Akt pathway, which is also central to insulin signaling, and upstream of RUNX2, and this led us to investigate whether DDR1 promotes vascular calcification in diabetes mellitus via this pathway. Approach and Results- Ddr1+/+ ; Ldlr-/- (single knock-out) and Ddr1-/- ; Ldlr-/- (double knock-out) mice were placed on high-fat diet for 12 weeks to induce atherosclerosis and type 2 diabetes mellitus. Von Kossa staining revealed reduced vascular calcification in the aortic arch of double knock-out compared with single knock-out mice. Immunofluorescent staining for RUNX2 was present in calcified plaques of single knock-out but not double knock-out mice. Primary vascular smooth muscle cells obtained from Ddr1+/+ and Ddr1-/- mice were cultured in calcifying media. DDR1 deletion resulted in reduced calcification, a 74% reduction in p-Akt levels, and an 88% reduction in RUNX2 activity. Subcellular fractionation revealed a 77% reduction in nuclear RUNX2 levels in Ddr1-/- vascular smooth muscle cells. DDR1 associated with phosphoinositide 3-kinase, and treatment with the inhibitor wortmannin attenuated calcification. Finally, we show that DDR1 is important to maintain the microtubule cytoskeleton which is required for the nuclear localization of RUNX2. Conclusions- These novel findings demonstrate that DDR1 promotes RUNX2 activity and atherosclerotic vascular calcification in diabetes mellitus via phosphoinositide 3-kinase/Akt signaling.
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Affiliation(s)
- Marsel Lino
- From the Department of Laboratory Medicine and Pathobiology (M.L., M.H.W., A.S.R., D.N., N.S., G.H., M.P.B.).,Ted Rogers Centre for Heart Research (M.L., D.N., N.S., G.H., M.P.B.)
| | - Mark H Wan
- From the Department of Laboratory Medicine and Pathobiology (M.L., M.H.W., A.S.R., D.N., N.S., G.H., M.P.B.)
| | - Antonio S Rocca
- From the Department of Laboratory Medicine and Pathobiology (M.L., M.H.W., A.S.R., D.N., N.S., G.H., M.P.B.).,Department of Medicine (A.S.R., M.P.B.)
| | - David Ngai
- From the Department of Laboratory Medicine and Pathobiology (M.L., M.H.W., A.S.R., D.N., N.S., G.H., M.P.B.).,Ted Rogers Centre for Heart Research (M.L., D.N., N.S., G.H., M.P.B.)
| | - Navid Shobeiri
- From the Department of Laboratory Medicine and Pathobiology (M.L., M.H.W., A.S.R., D.N., N.S., G.H., M.P.B.).,Ted Rogers Centre for Heart Research (M.L., D.N., N.S., G.H., M.P.B.)
| | - Guangpei Hou
- From the Department of Laboratory Medicine and Pathobiology (M.L., M.H.W., A.S.R., D.N., N.S., G.H., M.P.B.).,Ted Rogers Centre for Heart Research (M.L., D.N., N.S., G.H., M.P.B.)
| | - Chunxi Ge
- University of Toronto, Ontario, Canada; and Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor (C.G., R.T.F.)
| | - Renny T Franceschi
- University of Toronto, Ontario, Canada; and Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor (C.G., R.T.F.)
| | - Michelle P Bendeck
- From the Department of Laboratory Medicine and Pathobiology (M.L., M.H.W., A.S.R., D.N., N.S., G.H., M.P.B.).,Ted Rogers Centre for Heart Research (M.L., D.N., N.S., G.H., M.P.B.).,Department of Medicine (A.S.R., M.P.B.)
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8
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Ngai D, Lino M, Bendeck MP. Cell-Matrix Interactions and Matricrine Signaling in the Pathogenesis of Vascular Calcification. Front Cardiovasc Med 2018; 5:174. [PMID: 30581820 PMCID: PMC6292870 DOI: 10.3389/fcvm.2018.00174] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [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: 10/10/2018] [Accepted: 11/21/2018] [Indexed: 12/15/2022] Open
Abstract
Vascular calcification is a complex pathological process occurring in patients with atherosclerosis, type 2 diabetes, and chronic kidney disease. The extracellular matrix, via matricrine-receptor signaling plays important roles in the pathogenesis of calcification. Calcification is mediated by osteochondrocytic-like cells that arise from transdifferentiating vascular smooth muscle cells. Recent advances in our understanding of the plasticity of vascular smooth muscle cell and other cells of mesenchymal origin have furthered our understanding of how these cells transdifferentiate into osteochondrocytic-like cells in response to environmental cues. In the present review, we examine the role of the extracellular matrix in the regulation of cell behavior and differentiation in the context of vascular calcification. In pathological calcification, the extracellular matrix not only provides a scaffold for mineral deposition, but also acts as an active signaling entity. In recent years, extracellular matrix components have been shown to influence cellular signaling through matrix receptors such as the discoidin domain receptor family, integrins, and elastin receptors, all of which can modulate osteochondrocytic differentiation and calcification. Changes in extracellular matrix stiffness and composition are detected by these receptors which in turn modulate downstream signaling pathways and cytoskeletal dynamics, which are critical to osteogenic differentiation. This review will focus on recent literature that highlights the role of cell-matrix interactions and how they influence cellular behavior, and osteochondrocytic transdifferentiation in the pathogenesis of cardiovascular calcification.
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Affiliation(s)
- David Ngai
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Ted Rogers Centre for Heart Research, University of Toronto, Toronto, ON, Canada
| | - Marsel Lino
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Ted Rogers Centre for Heart Research, University of Toronto, Toronto, ON, Canada
| | - Michelle P Bendeck
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Ted Rogers Centre for Heart Research, University of Toronto, Toronto, ON, Canada.,Department of Medicine, University of Toronto, Toronto, ON, Canada
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9
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Lino M, Farr S, Baker C, Fuller M, Trigatti B, Adeli K. Intestinal scavenger receptor class B type I as a novel regulator of chylomicron production in healthy and diet-induced obese states. Am J Physiol Gastrointest Liver Physiol 2015; 309:G350-9. [PMID: 26138463 DOI: 10.1152/ajpgi.00086.2015] [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] [Received: 03/16/2015] [Accepted: 06/25/2015] [Indexed: 01/31/2023]
Abstract
The small intestine contributes to diabetic dyslipidemia through the overproduction of apolipoprotein B48 (apoB48)-containing chylomicron particles. An important regulator of chylomicron generation is dietary lipid absorption, underlining the potential involvement of intestinal lipid transporters for developing dyslipidemia. Intestinal expression of scavenger receptor class B type I (SR-BI) has been found to be upregulated in animal models of insulin resistance. Here we characterized the potential importance of SR-BI in contributing to chylomicron production and postprandial hypertriglyceridemia in vivo. Postprandial triglyceride (TG)-rich lipoprotein (TRL) production was characterized in hamsters treated with the SR-BI inhibitor to block lipid transport-1 (BLT-1) under healthy conditions or conditions of diet-induced obesity and dyslipidemia. BLT-1 (1 mg/kg) or vehicle was administered acutely in chow-fed hamsters or gavaged twice daily over 10 days during high-fructose, high-fat, high-cholesterol (FFC) feeding. Effects of acute SR-BI inhibition by BLT-1 were confirmed in healthy fat-loaded rats. Finally, plasma lipid levels were compared between SR-BI(-/-) mice and their wild-type counterparts fed either chow or a 12-wk high-fat diet. Acute BLT-1 treatment reduced postprandial plasma and TRL TG levels in healthy hamsters and rats. Chronic BLT-1 treatment of FFC-fed hamsters blunted diet-induced weight gain and fasting hypertriglyceridemia, and lowered postprandial TRL-TG, -cholesterol, and -apoB48 levels. Finally, SR-BI(-/-) mice displayed lower plasma and TRL TG levels relative to wild type, and diet-induced weight gain and postprandial hypertriglyceridemia were hindered in SR-BI(-/-) mice. We conclude that intestinal SR-BI is a critical regulator of postprandial lipoprotein production, emphasizing its potential as a target for preventing diabetic dyslipidemia.
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Affiliation(s)
- Marsel Lino
- Department of Molecular Structure and Function, Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada; and
| | - Sarah Farr
- Department of Molecular Structure and Function, Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada; and
| | - Chris Baker
- Department of Molecular Structure and Function, Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Mark Fuller
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Bernardo Trigatti
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Khosrow Adeli
- Department of Molecular Structure and Function, Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada; and
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10
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Giovannelli F, Chiaramonti R, Bianco G, Godone M, Battista D, Cardinali C, Borgheresi A, Sighinolfi A, D’Avanzo A, Breschi M, Dine J, Lino M, Zaccara G, Viggiano M, Rossi S, Cincotta M. P699: Lack of behavioural effects of high-frequency rTMS in vegetative state: a randomised, double blind, sham-controlled, cross-over study. Clin Neurophysiol 2014. [DOI: 10.1016/s1388-2457(14)50792-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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11
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Lino M, Bendeck MP. Abstract 677: The Role of Discoidin Domain Receptor 1 in Vascular Calcification in Atherosclerosis and Diabetes. Arterioscler Thromb Vasc Biol 2014. [DOI: 10.1161/atvb.34.suppl_1.677] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background:
Atherosclerosis and diabetes share many common pathogenic mechanisms. Vascular calcification is a common and severe complication in patients with atherosclerosis and type-2 diabetes (T2D), and occurs when vascular smooth muscle cells (VSMCs) trans-differentiate into osteoblast-like cells, in a process driven by runt-related transcription factor-2 (RUNX2). Our laboratory has recently discovered that Discoidin Domain Receptor-1 (DDR1) deletion reduces vascular calcification
in vivo
in
Ldlr
-/-
mice. Additionally, we have shown that RUNX2 activity is reduced in
Ddr1
-/-
VSMCs. However, little is known about the mechanism by which DDR1 mediates calcification and RUNX2 activity.
Rationale:
The insulin signaling pathway plays an important role in T2D and VSMC function. It has recently been discovered that PI3K binds to the DDR1 tyrosine kinase domain upon DDR1 activation.
Hypothesis:
DDR1 promotes vascular calcification by inducing RUNX2 activity via the PI3K/Akt signaling pathway in T2D.
Methods/Results:
To study the role of DDR1 in vascular calcification in T2D,
Ldlr
-/-
(SKO) and
Ldlr-/-; Ddr1
-/-
(DKO) mice were placed on a modified Western diet (40% fat, 43% carbohydrates, 0.5% cholesterol) for 12 weeks. Oil Red-O staining of the descending aorta showed reduced plaque burden in DKO mice (9.1±2.7% vs 4.4±2.9% surface area; p<0.05). Measurements of vascular calcification are ongoing. To determine the mechanism by which DDR1 modulates VSMC calcification, primary VSMCs collected from
Ddr1
+/+
and
DDR1
-/-
mice were cultured in osteogenic media for 12 days to induce calcification. Proliferation and calcification were significantly reduced in
DDR1
-/-
VSMCs. Additionally,
DDR1
-/-
VSMCs showed significantly reduced p-Akt levels when stimulated with insulin.
Significance:
Current treatments for vascular calcification are non-specific and often pose a risk to bone health. This is the first study to test the role of DDR1 in vascular calcification in an animal model of T2D, which will provide novel insight into the mechanism of vascular calcification and uncover new potential therapeutic approaches.
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Affiliation(s)
- Marsel Lino
- Laboratory Medicine and Pathobiology, Univ of Toronto, Toronto, Canada
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12
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Ragazzoni A, Pirulli C, Veniero D, Feurra M, Cincotta M, Giovannelli F, Chiaramonti R, Lino M, Rossi S, Miniussi C. 30. Vegetative versus minimally conscious states: A study using TMS-EEG, sensory and event-related potentials. Clin Neurophysiol 2013. [DOI: 10.1016/j.clinph.2013.06.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Giovannelli F, Chiaramonti R, Bianco G, Godone M, Lino M, Rossi S, Cincotta M. P 253. Lack of behavioural effects of high-frequency rTMS in vegetative state: A randomised, double blind, sham-controlled, cross-over study. Clin Neurophysiol 2013. [DOI: 10.1016/j.clinph.2013.04.329] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Tsuchiya K, Shiohira S, Sugiura H, Suzuki M, Okano K, Nitta K, Kaesler N, Immendorf S, Ouyang C, Carmeliet P, Floege J, Kruger T, Schlieper G, Georgescu A, Kalucka J, Olbrich S, Baumgartl J, Hackenbeck T, Eckardt KU, Weidemann A, Chmielewski S, Olejnik A, Sikorski K, Heemann U, Wesoly J, Bluyssen H, Baumann M, Mekahli D, Decuypere JP, Missiaen L, Levtchenko E, De Smedt H, Stasi A, Castellano G, Gigante M, Intini A, Pontrelli P, Divella C, Curci C, Grandaliano G, Gesualdo L, Vizza D, Perri A, Lofaro D, Toteda P, Lupinacci S, Leone F, Gigliotti P, Papalia T, Bonofiglio R, Vatazin AV, Astakhov PV, Zulkarnaev AB, Parodi E, Verzola D, D'Amato E, Viazzi F, Gonnella A, Garneri D, Pontremoli R, Garibotto G, Chen TH, Chen CH, Chen YC, Sue YM, Cheng CY, Guiying L, Ying L, Pozzoli S, Lino M, Delli Carpini S, Ferrandi M, Zerbini G, Simonini M, Zagato L, Molinari I, Citterio L, Manunta P, Feng X, Pan X, Wang W, Chen N, Chen YX, Wang WM, Chen N, Tanaka S, Yano S, Sugimoto T, Noh H, Yu MR, Kim HJ, Woo SA, Cho YJ, Kwon SH, Jeon JS, Han DC, Shimizu H, Yisireyili M, Nishijima F, Niwa T, Koh ES, Chung S, Kim SJ, Kim SJ, Yoon HE, Park CW, Chang YS, Shin SJ, Seong EY, Rhee H, Shin MJ, Yang BY, Jung YS, Lee DW, Lee SB, Kwak IS, Kim IY, Sancho-Martinez SM, Prieto-Garcia L, Lopez-Hernandez FJ, Lopez-Novoa JM, Bae EH, Choi HS, Joo SY, Kim IJ, Kim CS, Choi JS, Ma SK, Lee J, Kim SW, Humanes B, Sonia C, Jado J, Mojena M, Lara J, Alvarez-Sala L, Tejedor A, Lazaro A, Wada Y, Iyoda M, Matsumoto K, Shindo-Hirai Y, Kuno Y, Yamamoto Y, Suzuki T, Shibata T, Akizawa T, Lee DW, Kwak IS, Lee SB, Seong EY, Faubel S, Edelstein CL, Cano Penalver JL, de Frutos Garcia S, Griera Merino M, Luengo Rodriguez A, Garcia Jerez A, Bohorquez Magro L, Medrano D, Calleros Basilio L, Rodriguez Puyol M, Prieto-Garcia L, Sancho-Martinez SM, Lopez-Hernandez FJ, Lopez-Novoa JM, Thilo F, Liu Y, Tepel M, Hsu HH, Chen KH, Hung CC, Yang CW, Endlich N, Lin JL, Pavenstadt H, Rodrigues Diez RR, Mezzano S, Ruiz-Ortega M, Rodrigues Diez R, Lavoz C, Nakayama Y, Fukami K, Yamagishi SI, Obara N, Yokoro M, Ando R, Kaida Y, Toyonaga M, Kaifu K, Takeuchi M, Ueda S, Okuda S, Daenen K, Hoylaerts MF, Bammens B, Liu J, Zhong F, Dai Q, Xu L, Wang W, Chen N, Zaravinos A, Deltas CC. Cell signalling. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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15
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Naples M, Baker C, Lino M, Iqbal J, Hussain MM, Adeli K. Ezetimibe ameliorates intestinal chylomicron overproduction and improves glucose tolerance in a diet-induced hamster model of insulin resistance. Am J Physiol Gastrointest Liver Physiol 2012; 302:G1043-52. [PMID: 22345552 PMCID: PMC4380478 DOI: 10.1152/ajpgi.00250.2011] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [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: 01/31/2023]
Abstract
Ezetimibe is a cholesterol uptake inhibitor that targets the Niemann-Pick C1-like 1 cholesterol transporter. Ezetimibe treatment has been shown to cause significant decreases in plasma cholesterol levels in patients with hypercholesterolemia and familial hypercholesterolemia. A recent study in humans has shown that ezetimibe can decrease the release of atherogenic postprandial intestinal lipoproteins. In the present study, we evaluated the mechanisms by which ezetimibe treatment can lower postprandial apoB48-containing chylomicron particles, using a hyperlipidemic and insulin-resistant hamster model fed a diet rich in fructose and fat (the FF diet) and fructose, fat, and cholesterol (the FFC diet). Male Syrian Golden hamsters were fed either chow or the FF or FFC diet ± ezetimibe for 2 wk. After 2 wk, chylomicron production was assessed following intravenous triton infusion. Tissues were then collected and analyzed for protein and mRNA content. FFC-fed hamsters treated with ezetimibe showed improved glucose tolerance, decreased fasting insulin levels, and markedly reduced circulating levels of TG and cholesterol in both the LDL and VLDL fractions. Examination of triglyceride (TG)-rich lipoprotein (TRL) fractions showed that ezetimibe treatment reduced postprandial cholesterol content in TRL lipoproteins as well as reducing apoB48 content. Although ezetimibe did not decrease TRL-TG levels in FFC hamsters, ezetimibe treatment in FF hamsters resulted in decreases in TRL-TG. Jejunal apoB48 protein expression was lower in ezetimibe-treated hamsters. Reductions in jejunal protein levels of scavenger receptor type B-1 (SRB-1) and fatty acid transport protein 4 were also observed. In addition, ezetimibe-treated hamsters showed significantly lower jejunal mRNA expression of a number of genes involved in lipid synthesis and transport, including srebp-1c, sr-b1, ppar-γ, and abcg1. These data suggest that treatment with ezetimibe not only inhibits cholesterol uptake, but may also alter intestinal function to promote improved handling of dietary lipids and reduced chylomicron production. These, in turn, promote decreases in fasting and postprandial lipid levels and improvements in glucose homeostasis.
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Affiliation(s)
- Mark Naples
- 1Molecular Structure and Function, Research Institute, The Hospital for Sick Children, University of Toronto, Toronto, Canada;
| | - Chris Baker
- 1Molecular Structure and Function, Research Institute, The Hospital for Sick Children, University of Toronto, Toronto, Canada;
| | - Marsel Lino
- 1Molecular Structure and Function, Research Institute, The Hospital for Sick Children, University of Toronto, Toronto, Canada;
| | | | | | - Khosrow Adeli
- 1Molecular Structure and Function, Research Institute, The Hospital for Sick Children, University of Toronto, Toronto, Canada;
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16
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Hayashi AA, Webb J, Choi J, Baker C, Lino M, Trigatti B, Trajcevski KE, Hawke TJ, Adeli K. Intestinal SR-BI is upregulated in insulin-resistant states and is associated with overproduction of intestinal apoB48-containing lipoproteins. Am J Physiol Gastrointest Liver Physiol 2011; 301:G326-37. [PMID: 21546579 DOI: 10.1152/ajpgi.00425.2010] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Intestinal lipid dysregulation is a common feature of insulin-resistant states. The present study investigated alterations in gene expression of key proteins involved in the active absorption of dietary fat and cholesterol in response to development of insulin resistance. Studies were conducted in two diet-induced animal models of insulin resistance: fructose-fed hamster and high-fat-fed mouse. Changes in the mRNA abundance of lipid transporters, adenosine triphosphate cassette (ABC) G5, ABCG8, FA-CoA ligase fatty acid translocase P4, Niemann-Pick C1-Like1 (NPC1L1), fatty acid transport protein 4 (FATP4), and Scavenger Receptor Class B Type I (SR-BI), were assessed in intestinal fragments (duodenum, jejunum, and ileum) using quantitative real-time PCR. Of all the transporters evaluated, SR-B1 showed the most significant changes in both animal models examined. A marked stimulation of SR-B1 expression was observed in all intestinal segments examined in both insulin-resistant animal models. The link between SR-BI expression and intestinal lipoprotein production was then examined in the Caco-2 cell model. SR-B1 overexpression in Caco-2 cells increased apolipoprotein B (apoB) 100 and apoB48 secretion, whereas RNAi knock down of SR-B1 decreased secretion of both apoB100 and apoB48. We also observed changes in subcellular distribution of SR-B1 in response to exogenous lipid and insulin. Confocal microscopy revealed marked changes in SR-BI subcellular distribution in response to both exogenous lipids (oleate) and insulin. In summary, marked stimulation of intestinal SR-BI occurs in vivo in animal models of diet-induced insulin resistance, and modulation of SR-BI in vitro regulates production of apoB-containing lipoprotein particles. We postulate that apical and/or basolateral SR-BI may play an important role in intestinal chylomicron production and may contribute to chylomicron overproduction normally observed in insulin-resistant states.
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Affiliation(s)
- Amanda A Hayashi
- Molecular Structure & Function, Research Institute, The Hospital for Sick Children, University of Toronto, Canada
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17
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Hayashi AA, Webb J, Choi J, Baker C, Lino M, Trigatti B, Trajcevski KE, Hawke TJ, Adeli K. Intestinal SR-BI is upregulated in insulin-resistant states and is associated with overproduction of intestinal apoB48-containing lipoproteins. Am J Physiol Gastrointest Liver Physiol 2011. [PMID: 21546579 DOI: 10.1152/ajpgi] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Intestinal lipid dysregulation is a common feature of insulin-resistant states. The present study investigated alterations in gene expression of key proteins involved in the active absorption of dietary fat and cholesterol in response to development of insulin resistance. Studies were conducted in two diet-induced animal models of insulin resistance: fructose-fed hamster and high-fat-fed mouse. Changes in the mRNA abundance of lipid transporters, adenosine triphosphate cassette (ABC) G5, ABCG8, FA-CoA ligase fatty acid translocase P4, Niemann-Pick C1-Like1 (NPC1L1), fatty acid transport protein 4 (FATP4), and Scavenger Receptor Class B Type I (SR-BI), were assessed in intestinal fragments (duodenum, jejunum, and ileum) using quantitative real-time PCR. Of all the transporters evaluated, SR-B1 showed the most significant changes in both animal models examined. A marked stimulation of SR-B1 expression was observed in all intestinal segments examined in both insulin-resistant animal models. The link between SR-BI expression and intestinal lipoprotein production was then examined in the Caco-2 cell model. SR-B1 overexpression in Caco-2 cells increased apolipoprotein B (apoB) 100 and apoB48 secretion, whereas RNAi knock down of SR-B1 decreased secretion of both apoB100 and apoB48. We also observed changes in subcellular distribution of SR-B1 in response to exogenous lipid and insulin. Confocal microscopy revealed marked changes in SR-BI subcellular distribution in response to both exogenous lipids (oleate) and insulin. In summary, marked stimulation of intestinal SR-BI occurs in vivo in animal models of diet-induced insulin resistance, and modulation of SR-BI in vitro regulates production of apoB-containing lipoprotein particles. We postulate that apical and/or basolateral SR-BI may play an important role in intestinal chylomicron production and may contribute to chylomicron overproduction normally observed in insulin-resistant states.
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Affiliation(s)
- Amanda A Hayashi
- Molecular Structure & Function, Research Institute, The Hospital for Sick Children, University of Toronto, Canada
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18
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Toblli J, Cao G, Giani J, Dominici F, Angerosa M, Bailie G, Chantrel F, Jaeger S, Parienti JJ, Lino M, Maoujoud O, Alayoud A, Hassani K, Oualim Z, Mercadal L, Metzger M, Casadevall N, Haymann JP, Karras A, Boffa JJ, Flamant M, Vrtovsnik F, Stengel B, Froissart M, Macdougall I, Wiecek A, Covic A, Fishbane S, Besarab A, Schiller B, Provenzano R, Francisco C, Tong S, Duliege A, Polu K, Locatelli F. CKD / Anaemia. Clin Kidney J 2011. [DOI: 10.1093/ndtplus/4.s2.24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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19
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Pirulli C, Ragazzoni A, Veniero D, Rossi S, Feurra M, Cincotta M, Giovannelli F, Chiaromonti R, Lino M, Miniussi C. P26.6 Functional cortical connectivity in vegetative state and minimally conscious state: an investigation by transcranial magnetic stimulation-evoked potential. Clin Neurophysiol 2011. [DOI: 10.1016/s1388-2457(11)60650-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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20
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Pollock R, Chandran V, Barrett J, Eder L, Pellett F, Yao C, Lino M, Shanmugarajah S, Farewell VT, Gladman DD. Differential major histocompatibility complex class I chain-related A allele associations with skin and joint manifestations of psoriatic disease. ACTA ACUST UNITED AC 2011; 77:554-61. [DOI: 10.1111/j.1399-0039.2011.01670.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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21
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Lino M, Kus JV, Tran SL, Naqvi Z, Binnington B, Goodman SD, Segall AM, Barnett Foster D. A novel antimicrobial peptide significantly enhances acid-induced killing of Shiga toxin-producing Escherichia coli O157 and non-O157 serotypes. Microbiology (Reading) 2011; 157:1768-1775. [PMID: 21454368 DOI: 10.1099/mic.0.047365-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Shiga toxin-producing Escherichia coli (STEC) colonizes the human intestine, causing haemorrhagic colitis and haemolytic uraemic syndrome (HUS). Treatment options are limited to intravenous fluids in part because sublethal doses of some antibiotics have been shown to stimulate increased toxin release and enhance the risk of progression to HUS. Preventative antimicrobial agents, especially those that build on the natural antimicrobial action of the host defence, may provide a better option. In order to survive the acid stress of gastric passage, STEC is equipped with numerous acid resistance and DNA repair mechanisms. Inhibition of acid-induced DNA repair may offer a strategy to target survival of ingested STEC. We report here that brief pretreatment with a novel antimicrobial peptide, which was previously shown to inhibit bacterial DNA repair, significantly and profoundly reduces survival of acid-stressed O157 : H7 and non-O157 : H7 STEC seropathotypes that are highly associated with HUS. Reduction in survival rates of STEC range from 3 to 5 log. We also show that peptide/acid treatment results in little or no increase in toxin production, thereby reducing the risk of progression to HUS. This study identifies the peptide wrwycr as a potential new candidate for a preventative antimicrobial for STEC infection.
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Affiliation(s)
- M Lino
- Department of Chemistry and Biology, Ryerson University, Toronto, ON, Canada
| | - J V Kus
- Department of Chemistry and Biology, Ryerson University, Toronto, ON, Canada
| | - S L Tran
- Department of Chemistry and Biology, Ryerson University, Toronto, ON, Canada
| | - Z Naqvi
- Department of Chemistry and Biology, Ryerson University, Toronto, ON, Canada
| | - B Binnington
- Molecular Structure and Function, Hospital for Sick Children, Toronto, ON, Canada
| | - S D Goodman
- Division of Biomedical Sciences, Herman Ostrow School of Dentistry of the University of Southern California, USA
| | - A M Segall
- Department of Biology, Center for Microbial Sciences and Molecular Biology Institute, San Diego State University, USA
| | - D Barnett Foster
- Molecular Structure and Function, Hospital for Sick Children, Toronto, ON, Canada.,Department of Chemistry and Biology, Ryerson University, Toronto, ON, Canada
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22
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Lipari G, Riva F, Muselli P, Armatura G, Lino M, Shamale A, Baggio E. Anévrismes de l’artère carotide interne extra-crânienne : à propos de 2 cas. ACTA ACUST UNITED AC 2006; 31:152-8. [PMID: 16840953 DOI: 10.1016/s0398-0499(06)76535-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
INTRODUCTION Aneurysms of the extracranial portion of the internal carotid artery (ICA) are rare (accounting for only 0.1-2% of all surgical procedures affecting the ICA, 0.4-1% of all arterial aneurysms, and 4% of all aneurysms involving peripheral arteries), but they are nonetheless clinically significant because of the high related risk of cerebral thromboembolism. Given the rarity of these lesions, it seems worthwhile to report on two extracranial ICA aneurysms, one of atherosclerotic, the other of fibrodysplastic etiology that came under our observation. PATIENTS AND METHODS Our experience concerns just two cases, treated at the Department of Surgical and Gastroenterological Sciences of the Policlinico G.B. Rossi in Verona, presenting with very different clinical and instrumental findings, and requiring a different surgical treatment. The former underwent resection of the aneurysm and end-to-end reconstruction; in the latter, we performed a carotid transposition with internalization of the external carotid artery. RESULTS Neither patient suffered from any major or minor neurological complications during or after surgery, and the follow-up confirmed a normal extracranial carotid patency. CONCLUSIONS Based on our, albeit limited experience and an analysis of the literature, we make a few points concerning the diagnostic approach (which differs from the case of stenosing carotid lesions), the indications and type of treatment for extracranial ICA aneurysms.
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Affiliation(s)
- G Lipari
- Département de Sciences Chirurgicales et Gastro-entérologiques de l'Université de Vérone.
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23
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Simeoni S, Girelli D, Lino M, Olivieri O, Corrocher R. Recovery of Renal Function after 3 Months of Dialysis in a Patient with Atherosclerotic Renovascular Disease Following Aortoiliac Bypass and Left Renal Artery Reimplantation. Eur J Vasc Endovasc Surg 2004; 28:562-4. [PMID: 15465381 DOI: 10.1016/j.ejvs.2004.05.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/06/2004] [Indexed: 11/18/2022]
Affiliation(s)
- S Simeoni
- Department of Clinical and Experimental Medicine, Chair of Internal Medicine, University of Verona, Verona, Italy
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24
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Lino M, Bobrie G, Battaglia C, Fiquet B, Menard J, Plouin PF. REFRACTORY HYPERTENSION. J Hypertens 2004. [DOI: 10.1097/00004872-200406002-00031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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25
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26
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Raschilas F, Lino M, Mortier C, Mortier E, Pouchot J, Vinceneux P. Facteurs pronostiques des pneumopathies communautaires des sujets très âgés. Rev Med Interne 2000. [DOI: 10.1016/s0248-8663(00)90056-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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27
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Abstract
Effects of a homogeneous static magnetic field on erythrocyte sedimentation rate (ESR) have been assessed by using the standard Westergren method. A magnetic field of 6.3 T in the vertical direction only slightly enhanced ESR in saline solution, which was consistent with an effect on cell orientation. On the other hand, the magnetic field greatly enhanced ESR in plasma. It took a long time (about 20 min) for an ESR change to occur in plasma in response to the magnetic field. The effects in plasma were too large to originate only from cell orientation and were clearly distinct from a magnetic field-induced Boycott effect under an inhomogeneous magnetic field. A morphological examination and the nonlinear time course of the sedimentation in plasma indicated that the magnetic field increased cell aggregation and thereby enhanced ESR in plasma.
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Affiliation(s)
- M Lino
- Department of Physiology I, Nippon Medical School, Tokyo, Japan
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28
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Affiliation(s)
- A P Batocchi
- Institute of Neurology, Catholic University, Rome, Italy
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29
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Aiuti A, Forte P, Simeoni L, Lino M, Pozzi L, Fattorossi A, Giacomini P, Ginelli E, Beretta A, Siccardi A. Membrane expression of HLA-Cw4 free chains in activated T cells of transgenic mice. Immunogenetics 1995; 42:368-75. [PMID: 7590970 DOI: 10.1007/bf00179398] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Transgenic mice were produced in which human HLA-Cw4 is stably integrated, behaves as a single Mendelian trait, and, being under the transcriptional control of human CD2, is selectively and efficiently expressed in T lymphocytes. These mice were used as a model system to determine whether HLA-type C molecules can be exposed on the surface of activated lymphocytes as free heavy chains, non-associated with beta2-microglobulin (beta2m). In our transgenic mice we could identify HLA-Cw4 molecules either as free chains or as beta2m-associated molecules by the use of monoclonal antibodies specific for either conformation of HLA class I and nonreactive to mouse H2 molecules. Resting mouse lymphocytes were shown by western transfer analysis to contain sizeable amounts of HLA-Cw4 free chains, but they exposed on their surface HLA-Cw4 only in association with beta2m, as indicated by flow cytometric measurements. Conversely, where the content of total HLA-Cw4 was increased, lectin-activated mouse lymphocytes exposed on their outer cell membrane HLA-Cw4 molecules in both conformations, namely, also as free heavy chains. Isoelectrofocusing analysis confirmed the presence of both HLA-Cw4 molecular conformations in activated T cells and indicated that HLA-Cw4 heavy chains can bind to mouse beta2m with the same low affinity displayed for human beta2m. The results of our experiments led us to conclude that (1) association with beta2m is not necessary for the exposure of HLA-C on the surface of activated T lymphocytes and (2) cell activation affects the balance between the two conformational forms of HLA-C.
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Affiliation(s)
- A Aiuti
- Dip. Biopatologia Umana, Sez. Biologia Cellulare, Universita di Roma "La Sapienza", Viale Regina Elena, 324, 00161 Roma, Italia
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30
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Candiani P, Scuro A, Lino M, Adami CA, Mazzilli G, Vecchioni R, Pollini P. [Carotid endarterectomy with placement of a PUR (polyurethane) patch]. Minerva Cardioangiol 1993; 41:397-404. [PMID: 8259236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
In this study, 40 patients who underwent surgery for cerebro-vascular insufficiency were considered. Carotid endarterectomy was the procedure of choice in all of the patients; the arteriotomy was always closed using a PUR patch, a new material that, for its chemical and physical characteristics seems to be a good alternative to PTFE. All of the patients underwent surgery under loco-regional anesthesia, allowing a perioperative monitoring of the neurological status through the patient's active collaboration. During the postoperative period, non local or systemic pathology related to the use of the patch has been observed. During the short and half term follow-up, the patients underwent echo-Doppler of the supra-aortic trunks that didn't show either false aneurysms or thrombosis on the patch surface.
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Affiliation(s)
- P Candiani
- Istituto di Clinica Chirurgica Generale, Università degli Studi di Verona
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31
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Perbellini A, Taddei G, Barbieri E, Arosio E, Pancera P, Bau G, Mansueto G, Lino M, Ghini P, Scuro A. Arterial revascularization by laser angioplasty: first Italian experiences. Angiology 1990; 41:768-71. [PMID: 2221476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Eighty-seven laser angioplasty procedures were performed on 85 patients (73 men and 12 women). In the first phase (54 patients) a broad selection process included long occlusions (23.9 cm avg) and vessels with heavy calcification; in the second phase (31 patients) the authors treated vessels with shorter occlusions (10 cm avg) and less calcific. The primary success rate, based on number of procedures (73.5% overall) was 69% in the first phase but reached 81.3% in the second phase. There were 14 perforations (16%), 8 dissections (9.4%), and 4 peripheral emboli (4.7%). Six-month follow-up shows that the Winsor index maintained its initial improvement in 76.5% of all patients, or 62% in just the long occlusions. These data and a review of the cases suggest that no more of 10-20% of patients with claudication in lower extremities can be treated by laser angioplasty; the authors consider ideal candidates those patients who noncalcific lesions in the common iliac or superficial femoral arteries at the III medium level with obstructions shorter than 8 cm and good runoff.
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Affiliation(s)
- A Perbellini
- Institute of Surgical Pathology, University of Verona, Italy
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32
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Perbellini A, Lievore R, Candiani P, Lino M, Rossi M. [Prognostic factors in surgery of ruptured aneurysms of the abdominal aorta]. Chir Ital 1988; 40:181-6. [PMID: 3228924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
From 1978 to 1986 83 patients underwent surgery for ruptured abdominal aortic aneurysm. The intraoperative and post-operative mortality rates was 34%. This multivariant analysis has been performed with intention of identifying the specific factors that affected the surgical outcome of ruptured abdominal aortic aneurysms. Increased intraoperative mortality rates were associated with heart disease, while postoperative mortality rates were associated with preoperative hypotension, BUN, levels higher than 40 mg/dl and other factors like duration of operation, blood less, blood transfusion and pre-operative hematocrit.
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Affiliation(s)
- A Perbellini
- Università di Verona, Istituto di Patologia Chirurgica
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33
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Lino M. [Basic protective norms against damages caused by Roentgen rays in stomatologic diagnosis]. Rass Trimest Odontoiatr 1967; 48:353-65. [PMID: 5241736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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