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Garrido A, Guardiola M, Neira LM, Sont R, Córdova H, Cuatrecasas M, Flisikowski K, Troya J, Sanahuja J, Winogrodzki T, Belda I, Meining A, Fernández-Esparrach G. Preclinical Evaluation of a Microwave-Based Accessory Device for Colonoscopy in an In Vivo Porcine Model with Colorectal Polyps. Cancers (Basel) 2023; 15:3122. [PMID: 37370732 DOI: 10.3390/cancers15123122] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/02/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
BACKGROUND AND AIMS Colonoscopy is currently the most effective way of detecting colorectal cancer and removing polyps, but it has some drawbacks and can miss up to 22% of polyps. Microwave imaging has the potential to provide a 360° view of the colon and addresses some of the limitations of conventional colonoscopy. This study evaluates the feasibility of a microwave-based colonoscopy in an in vivo porcine model. METHODS A prototype device with microwave antennas attached to a conventional endoscope was tested on four healthy pigs and three gene-targeted pigs with mutations in the adenomatous polyposis coli gene. The first four animals were used to evaluate safety and maneuverability and compatibility with endoscopic tools. The ability to detect polyps was tested in a series of three gene-targeted pigs. RESULTS the microwave-based device did not affect endoscopic vision or cause any adverse events such as deep mural injuries. The microwave system was stable during the procedures, and the detection algorithm showed a maximum detection signal for adenomas compared with healthy mucosa. CONCLUSIONS Microwave-based colonoscopy is feasible and safe in a preclinical model, and it has the potential to improve polyp detection. Further investigations are required to assess the device's efficacy in humans.
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Affiliation(s)
| | | | | | | | - Henry Córdova
- Endoscopy Unit, Gastroenterology Department, Hospital Clínic, University of Barcelona, 08036 Barcelona, Spain
- Biomedical Research Network on Hepatic and Digestive Diseases (CIBEREHD), 28029 Madrid, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Miriam Cuatrecasas
- Biomedical Research Network on Hepatic and Digestive Diseases (CIBEREHD), 28029 Madrid, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Facultat de Medicina i Ciències de la Salut, University of Barcelona, 08036 Barcelona, Spain
- Pathology Department, Hospital Clínic, University of Barcelona, 08036 Barcelona, Spain
| | - Krzysztof Flisikowski
- Lehrstuhl für Biotechnologie der Nutztiere, School of Life Sciences, Technische Universität München, 80333 München, Germany
| | - Joel Troya
- Interventional and Experimental Endoscopy (InExEn), Gastroenterology, Internal Medicine II, University Hospital Würzburg, 97080 Würzburg, Germany
| | - Josep Sanahuja
- Anesthesiology Department, Hospital Clínic, University of Barcelona, 08036 Barcelona, Spain
| | - Thomas Winogrodzki
- Lehrstuhl für Biotechnologie der Nutztiere, School of Life Sciences, Technische Universität München, 80333 München, Germany
| | | | - Alexander Meining
- Interventional and Experimental Endoscopy (InExEn), Gastroenterology, Internal Medicine II, University Hospital Würzburg, 97080 Würzburg, Germany
| | - Glòria Fernández-Esparrach
- MiWEndo Solutions S.L., 08014 Barcelona, Spain
- Endoscopy Unit, Gastroenterology Department, Hospital Clínic, University of Barcelona, 08036 Barcelona, Spain
- Biomedical Research Network on Hepatic and Digestive Diseases (CIBEREHD), 28029 Madrid, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Facultat de Medicina i Ciències de la Salut, University of Barcelona, 08036 Barcelona, Spain
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Parra S, Avila A, Rivalta J, Guardiola M, Rodriguez R, Castro A. AB0124 EFFECTS OF INHIBITOR K-CARRAGEENAN ON HAECs INFLAMMATORY RESPONSE TO LDLs ISOLATED FROM SLE PATIENTS. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.4950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BackgroundSystemic Lupus Erythematosus (SLE) is an autoimmune disease with a high risk of atherosclerosis and cardiovascular events. It was previously reported by our group that low-density lipoprotein (LDL) particles isolated from SLE patients, during an active state of the disease (‘flare’), promoted an exaggerated inflammatory response in human aortic endothelial cells (HAECs). However, the molecular mechanisms underlying this response still remain elusive.ObjectivesThe hypothesis of this study is that these SLE-LDLs would be using receptor LOX-1, associated with inflammatory conditions and altered lipoproteins, to generate the proatherogenic response in HAECs.MethodsLOX-1 pharmacological inhibitor k-carrageenan was used before the stimulation of HAECs with LDLs isolated from healthy controls (10), non-active (13), or active-SLE patients (13). Gene expression, protein, and cell migration assays were performed to evaluate HAECs inflammatory response.ResultsLOX-1 inhibition with k-carrageenan significantly reduced the expression of vascular cell adhesion molecule 1 (VCAM-1) and restored the gene expression of endothelial nitric oxide synthase (eNOS) in HAECs incubated with non-active SLE LDLs.ConclusionWhile VCAM-1 down-regulation was expected, the immediate next step derived from the observed results will be a deeper understanding of how LOX-1 inhibition may restore the endothelial ability to synthetize NO in the presence of altered LDL. This will allow gaining insight not only on the development of atherosclerosis but also on the clue mechanisms involved in the pathogenesis of SLE.Disclosure of InterestsNone declared
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Rehues P, Rodríguez M, Iranzo V, Mora J, Balsells C, Guardiola M, Ribalta J. Distribution of seven ApoC-III glycoforms in plasma, VLDL, IDL, LDL and HDL of healthy subjects. Atherosclerosis 2021. [DOI: 10.1016/j.atherosclerosis.2021.06.118] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Ozcariz E, Rojo G, Guardiola M, Amigó N, Ribalta J. H - nuclear magnetic ressonance (H-NMR) -based metabolomic profiling provides a specific type 2 diabetes mellitus associated profile in Spanish population beyond glucose: The Di@bet.es study. Atherosclerosis 2021. [DOI: 10.1016/j.atherosclerosis.2021.06.389] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Ozcariz E, Rojo G, Gil M, Guardiola M, Amigo N, Ribalta J. Characterization of the metabolomic profile by 1H-nuclear magnetic resonance spectroscopy in the DI@BET.ES study. Atherosclerosis 2020. [DOI: 10.1016/j.atherosclerosis.2020.10.219] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Gil M, Rojo G, Ozcariz E, Guardiola M, Amigo N, Masana L, Ribalta J. Exploring lipoprotein patterns in DI@BET.ES study. Atherosclerosis 2020. [DOI: 10.1016/j.atherosclerosis.2020.10.251] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Verdaguer H, Guardiola M, Mancuso F, Acosta Eyzaguirre D, Buxò E, Hernando J, Diez Garcia M, Laquente B, Baraibar Argota I, Ros Montañá F, Garcia-Alvarez A, Matito J, Martin A, Sierra A, Villacampa Javierre G, Molero C, Miquel J, Vivancos A, Dienstmann R, Macarulla Mercadé T. 1545P DNA damage repair (DDR) gene mutations (mut) are predictors of response to platinum-based chemotherapy in advanced pancreatic cancer (PC) patients (pts). Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.2028] [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: 11/29/2022] Open
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Acosta Eyzaguirre D, Verdaguer H, Buxò E, Garcia-Alvarez A, Sardo E, Hernando J, Diez Garcia M, Guardiola M, Ros Montañá F, Baraibar Argota I, Saoudi N, Marmolejo Castaneda D, Aguilar S, Sierra A, Vivancos A, Dienstmann R, Macarulla Mercadé T. 1549P Molecular alterations (MA) with potential therapeutic implications in KRAS wild-type (WT) pancreatic cancer patients. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.2032] [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: 10/23/2022] Open
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Guardiola M, Oliva I, Sanchez M, Plana N, Masana L, Monk D, Ribalta J. Pcsk9 Promoter Methylation Is Associated With Small Ldl Particles In Patients With Type 2 Diabetes And Metabolic Syndrome. Atherosclerosis 2019. [DOI: 10.1016/j.atherosclerosis.2019.06.123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Guardiola M, Salvatierra K, Florez H. Computer analysis of resistance mutations to HCV NS5A antivirals. Int J Infect Dis 2018. [DOI: 10.1016/j.ijid.2018.04.4280] [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: 10/28/2022] Open
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Guardiola M, Oliva I, Plana N, Ibarretxe D, Masana L, Ribalta J. Two TAGSNPS in PCSK9 are associated with tg metabolism in patients with type 2 diabetes and metabolic syndrome. Atherosclerosis 2018. [DOI: 10.1016/j.atherosclerosis.2018.06.445] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Guardiola M, Buitrago S, Fernández-Esparrach G, O'Callaghan JM, Romeu J, Cuatrecasas M, Córdova H, González Ballester MÁ, Camara O. Dielectric properties of colon polyps, cancer, and normal mucosa: Ex vivo measurements from 0.5 to 20 GHz. Med Phys 2018; 45:3768-3782. [PMID: 29807391 DOI: 10.1002/mp.13016] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [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: 10/11/2017] [Revised: 05/09/2018] [Accepted: 05/18/2018] [Indexed: 12/12/2022] Open
Abstract
PURPOSE Colorectal cancer is highly preventable by detecting and removing polyps, which are the precursors. Currently, the most accurate test is colonoscopy, but still misses 22% of polyps due to visualization limitations. In this paper, we preliminary assess the potential of microwave imaging and dielectric properties (e.g., complex permittivity) as a complementary method for detecting polyps and cancer tissue in the colon. The dielectric properties of biological tissues have been used in a wide variety of applications, including safety assessment of wireless technologies and design of medical diagnostic or therapeutic techniques (microwave imaging, hyperthermia, and ablation). The main purpose of this work is to measure the complex permittivity of different types of colon polyps, cancer, and normal mucosa in ex vivo human samples to study if the dielectric properties are appropriate for classification purposes. METHODS The complex permittivity of freshly excised healthy colon tissue, cancer, and histological samples of different types of polyps from 23 patients was characterized using an open-ended coaxial probe between 0.5 and 20 GHz. The obtained measurements were classified into five tissue groups before applying a data reduction step with a frequency dispersive single-pole Debye model. The classification was finally compared with pathological analysis of tissue samples, which is the gold standard. RESULTS The complex permittivity progressively increases as the tissue degenerates from normal to cancer. When comparing to the gold-standard histological tissue analysis, the sensitivity and specificity of the proposed method is the following: 100% and 95% for cancer diagnosis; 91% and 62% for adenomas with high-grade dysplasia; 100% and 61% for adenomas with low-grade dysplasia; and 100% and 74% for hyperplastic polyps, respectively. In addition, complex permittivity measurements were independent of the lesion shape and size, which is also an interesting property comparing to current colonoscopy techniques. CONCLUSIONS The contrast in complex permittivities between normal and abnormal colon tissues presented here for the first time demonstrate the potential of these measurements for tissue classification. It also opens the door to the development of a microwave endoscopic device to complement the outcomes of colonoscopy with functional tissue information.
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Affiliation(s)
- Marta Guardiola
- BCN-MedTech, Department of Information and Communication Technologies, Universitat Pompeu Fabra, Barcelona, 08018, Spain
| | - Santiago Buitrago
- CommSensLab, Department of Signal Theory and Communications, Universitat Politècnica de Catalunya, Barcelona, 08034, Spain
| | - Glòria Fernández-Esparrach
- Endoscopy Unit, Institut de Malalties Digestives i Metabòliques, IDIBAPS, CIBERehd, Hospital Clínic, Universitat de Barcelona, Barcelona, 08036, Spain
| | - Joan M O'Callaghan
- CommSensLab, Department of Signal Theory and Communications, Universitat Politècnica de Catalunya, Barcelona, 08034, Spain
| | - Jordi Romeu
- CommSensLab, Department of Signal Theory and Communications, Universitat Politècnica de Catalunya, Barcelona, 08034, Spain
| | - Miriam Cuatrecasas
- Pathology Department, CDB, Hospital Clínic, IDIBAPS, Universitat de Barcelona, Banc de Tumors Biobanc Clinic-IDIBAPS, Barcelona, 08036, Spain
| | - Henry Córdova
- Endoscopy Unit, Institut de Malalties Digestives i Metabòliques, IDIBAPS, CIBERehd, Hospital Clínic, Universitat de Barcelona, Barcelona, 08036, Spain
| | - Miguel Ángel González Ballester
- BCN-MedTech, Department of Information and Communication Technologies, Universitat Pompeu Fabra, Barcelona, 08018, Spain
- ICREA, Barcelona, 08010, Spain
| | - Oscar Camara
- BCN-MedTech, Department of Information and Communication Technologies, Universitat Pompeu Fabra, Barcelona, 08018, Spain
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Oliva I, Guardiola M, Vallvé J, Ibarretxe D, Plana N, Monk D, Masana L, Ribalta J. APOA5 snps and methylation jointly contribute to the individual predisposition to hypertriglyceridemia. Atherosclerosis 2014. [DOI: 10.1016/j.atherosclerosis.2014.05.315] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Guardiola M, Alvaro A, Vallvé JC, Rosales R, Solà R, Girona J, Serra N, Duran P, Esteve E, Masana L, Ribalta J. APOA5 gene expression in the human intestinal tissue and its response to in vitro exposure to fatty acid and fibrate. Nutr Metab Cardiovasc Dis 2012; 22:756-762. [PMID: 21489765 DOI: 10.1016/j.numecd.2010.12.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [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] [Received: 03/19/2010] [Revised: 10/05/2010] [Accepted: 12/11/2010] [Indexed: 01/11/2023]
Abstract
BACKGROUND AND AIMS APOA5, a key gene regulating triglyceride (TG) levels, is reported to be expressed exclusively in the liver where it may regulate TG-rich particle synthesis and secretion. Since the same lipoprotein processing occurs in the intestine, we have postulated that this organ would also express APOA5. METHODS AND RESULTS We have detected the APOA5 gene expression in C57BL/6J mouse and in human small intestine samples. In humans, it is expressed mainly in the duodenum and colon, with messenger RNA (mRNA) levels four orders of magnitude lower than in the liver, and the protein product being one-sixth of the liver equivalent. Subsequently, we carried out in vitro experiments in TC-7/CaCo(2) human intestinal cells to analyse the expression of APOA5, APOC3, APOB and MTP genes after the incubation with long- and short-chain fatty acids, and a peroxisome proliferator-activated receptor alpha (PPARα) agonist (Wy 14643, a fibrate therapeutic agent). In the TC-7 cell line, APOA5 expression was significantly upregulated by saturated fatty acids. The short-chain fatty acid butyrate increased APOA5 expression almost fourfold while APOB was downregulated by increasing butyrate concentrations. When TC-7 cells were incubated with PPARα agonist, the APOA5 expression was increased by 60%, while the expression of APOB, MTP and APOC3 was decreased by 50%, 30% and 45%, respectively. CONCLUSION Our results demonstrate that APOA5 is expressed in the intestine, albeit at a much lower concentration than in the liver. While it remains to be determined whether intestinal apo A-V is functional, our in vitro experiments show that its expression is modifiable by dietary and pharmacological stimuli.
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Affiliation(s)
- M Guardiola
- Unitat de Recerca en Lípids i Arteriosclerosi, Institut d'Investigacions Sanitàries Pere, Virgili, Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas, Universitat Rovira i Virgili, Reus, Spain
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García-Heredia A, Marsillach J, Aragonès G, Guardiola M, Rull A, Beltrán-Debón R, Folch A, Mackness B, Mackness M, Pedro-Botet J, Joven J, Camps J. Serum paraoxonase-3 concentration is associated with the severity of hepatic impairment in patients with chronic liver disease. Clin Biochem 2011; 44:1320-4. [DOI: 10.1016/j.clinbiochem.2011.08.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Revised: 07/29/2011] [Accepted: 08/02/2011] [Indexed: 12/20/2022]
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Aragonès G, García-Heredia A, Guardiola M, Rull A, Beltrán-Debón R, Marsillach J, Alonso-Villaverde C, Mackness B, Mackness M, Pedro-Botet J, Pardo-Reche P, Joven J, Camps J. Serum paraoxonase-3 concentration in HIV-infected patients. Evidence for a protective role against oxidation. J Lipid Res 2011; 53:168-74. [PMID: 22003209 DOI: 10.1194/jlr.p018457] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
We investigated the influence of the HIV infection on serum paraoxonase-3 (PON3) concentration and assessed the relationships with lipoprotein-associated abnormalities, immunological response, and accelerated atherosclerosis. We studied 207 HIV-infected patients and 385 healthy volunteers. Serum PON3 was determined by in-house ELISA, and PON3 distribution in lipoproteins was investigated by fast-performance liquid chromatography (FPLC). Polymorphisms of the PON3 promoter were analyzed by the Iplex Gold MassArray(TM) method. PON3 concentrations were increased (about three times) in HIV-infected patients with respect to controls (P < 0.001) and were inversely correlated with oxidized LDL levels (P = 0.038). Long-term use of nonnucleoside reverse transcriptase inhibitor (NNRTI)-based antiretroviral therapy was associated with a decrease of PON3 concentrations. In a multivariate linear regression analysis, these relationships were still strong when the main confounding covariates were considered. PON3 was mainly found in HDL in HIV-infected patients, but a substantial amount of the protein was detected in LDL particles. This study reports for the first time an important increase in serum PON3 concentrations in HIV-infected patients that is associated with their oxidative status and their treatment with NNRTI. Long-term, prospective studies are needed to confirm the possible influence of this enzyme on the course of this disease and its possible utility as an analytical biomarker.
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Affiliation(s)
- Gerard Aragonès
- Centre de Recerca Biomèdica, Hospital Universitari de Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Reus, Spain
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Gonzalez M, Brugnara L, Murillo S, Guardiola M, Novials A, Ribalta J. 122 ACUTE EXERCISE INCREASES REMNANT LIPOPROTEIN CHOLESTEROL IN TYPE 1 DIABETES (T1DM). ATHEROSCLEROSIS SUPP 2011. [DOI: 10.1016/s1567-5688(11)70123-4] [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: 11/29/2022]
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Aragonès G, Guardiola M, Barreda M, Marsillach J, Beltrán-Debón R, Rull A, Mackness B, Mackness M, Joven J, Simó JM, Camps J. Measurement of serum PON-3 concentration: method evaluation, reference values, and influence of genotypes in a population-based study. J Lipid Res 2011; 52:1055-61. [PMID: 21335322 DOI: 10.1194/jlr.d014134] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Experimental studies showed that paraoxonase-3 (PON3) retards lipoprotein oxidation. Our objective was to describe a new assay to measure serum PON3 concentrations and report their reference values in a population-based study. The influence of PON3 promoter polymorphisms and their relationships with PON1 and lipid profile were also studied. We generated an anti-PON3 antibody by inoculating rabbits with a synthetic peptide specific to mature PON3. This antibody was used to develop an ELISA. The average regression line of standard plots (n = 8) was y = 0.9587 (0.3392) log(10)x + 1.9466 (0.0861) [r(2) = 0.924 (0.0131); P < 0.001]. There was no cross reaction with PON1. Detection limit was 0.24 mg/l. Imprecision was ≤ 13.2%. Reference interval (n = 356) was 1.00-2.47 mg/l. PON3 was observed in HDL particles containing apolipoprotein (apo)A-I and PON1, but not apoA-II or apoE. Serum PON3 concentrations showed a moderate influence (about 10% variation) by PON3 promoter polymorphisms. Our study describes for the first time a method to measure serum PON3 concentrations. This method offers new opportunities in the investigation of the properties and role of PON3 in cardiovascular disease, with possible implications in clinical practice.
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Affiliation(s)
- Gerard Aragonès
- Centre de Recerca Biomèdica, Hospital Universitari de Sant Joan, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Catalonia, Spain
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Guardiola M, Exeter H, Palmen J, Perret C, Li K, Cooper J, Khaw KT, Sandhu M, Ricketts S, Tedgui A, Humphries S, Ninio E, Karabina SA, Boekhold S, Mallat Z, Talmud P. P156 PLA2G2A, PLA2G5 AND PLA2G10 VARIANTS, SPLA2 ACTIVITY AND MASS AND CHD RISK: RESULTS FROM GRACE AND EPIC-NORFOLK. ATHEROSCLEROSIS SUPP 2010. [DOI: 10.1016/s1567-5688(10)70223-3] [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: 10/19/2022]
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Cabré A, Lázaro I, Girona J, Manzanares JM, Marimón F, Plana N, Guardiola M, Heras M, Masana L. The APOA5-1131 T>C variant enhances the association between RBP4 and hypertriglyceridemia in diabetes. Nutr Metab Cardiovasc Dis 2010; 20:243-248. [PMID: 19765959 DOI: 10.1016/j.numecd.2009.04.003] [Citation(s) in RCA: 6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2008] [Revised: 02/19/2009] [Accepted: 04/01/2009] [Indexed: 01/11/2023]
Abstract
BACKGROUND AND AIM Type 2 diabetic patients have an increased prevalence of hypertriglyceridemia. RBP4 has been associated with insulin resistance and hypertriglyceridemia in obesity, the metabolic syndrome and type 2 diabetes. APOA5 is proposed to be a genetic modulator of triglycerides. The aim of this study was to evaluate the relationship between RBP4 plasma levels and lipid disturbances and to determine the impact of the APOA5-1131 T>C variant on this relationship in type 2 diabetic patients. METHODS AND RESULTS A total of 165 type 2 diabetic patients were included in the study. RBP4 plasma levels and the APOA5-1131 T>C variant were determined and the complete lipid profile was assessed by sequential ultracentrifugation. RBP4 was positively correlated with triglyceride levels in plasma and with all the components of triglyceride-rich lipoproteins. Despite the fact that a statistically significant relationship between the APOA5 genetic variant and RBP4 plasma levels was not found, the hypertriglyceridemic effect of high RBP4 levels was enhanced by the presence of the APOA5-1131 T>C genetic variant. Correlation coefficients were 2-fold higher for TC carriers compared to TT carriers with regard to RBP4 plasma levels and all the components of triglyceride-rich lipoproteins. Those type 2 diabetic patients with high RBP4 plasma concentrations and who were TC carriers showed an increased incidence of hypertriglyceridemia (OR=7.46, P=0.010). CONCLUSION RBP4 is associated with hypertriglyceridemia in type 2 diabetic patients. The RBP4 effect is conditioned by the presence of the APOA5-1131 T>C genetic variant.
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Affiliation(s)
- A Cabré
- CIBER of Diabetes and Associated Metabolic Diseases (CIBERDEM), URV, Department of Internal Medicine, Sant Joan University Hospital, Reus, Spain
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Guardiola M, Ken-Dror G, Humphries S, Talmud P. LRP5 VARIANTS ARE ASSOCIATED WITH TRIGLYCERIDE LEVELS AND TYPE 2 DIABETES. Atherosclerosis 2009. [DOI: 10.1016/j.atherosclerosis.2009.09.049] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Gonzàlez M, Ribalta J, Vives G, Iftimie S, Ferré R, Plana N, Guardiola M, Dallinga-Thie G, Masana L, Castro A. Abstract: P924 NMR LIPOPROTEIN SUBCLASSES AND THE APOE GENOTYPE INFLUENCE CAROTID ATHEROSCLEROSIS IN PATIENTS WITH SYSTEMIC LUPUS ERYTHEMATOSUS. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)71045-1] [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: 11/24/2022]
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Cabre A, Lazaro I, Girona J, Manzanares J, Marimon F, Plana N, Guardiola M, Heras M, Masana L. ADIPOSE TISSUE-DERIVED LIPOCALINS RBP4 AND FABP4 INDUCE ATHEROGENIC DYSLIPIDEMIA IN DIABETES. ATHEROSCLEROSIS SUPP 2008. [DOI: 10.1016/s1567-5688(08)70069-2] [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: 11/24/2022]
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Guardiola M, Alvaro A, Vallve J, Girona J, Rosales R, Sola R, Masana L, Ribalta J. INTESTINAL APOLIPOPROTEIN A5 EXPRESSION INVERSELY CORRELATES WITH THAT OF GENES NEEDED IN LIPOPROTEIN ASSEMBLY (MTP & APOB). ATHEROSCLEROSIS SUPP 2008. [DOI: 10.1016/s1567-5688(08)70028-x] [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: 11/16/2022]
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Guardiola M, Alvaro A, Vallve J, Girona J, Rosales R, Masana L, Ribalta J. PO7-182 APOLIPOPROTEIN A5 IS EXPRESSED IN HUMAN SMALL INTESTINE AND IS UPREGULATED BY FIBRATES. ATHEROSCLEROSIS SUPP 2007. [DOI: 10.1016/s1567-5688(07)71192-3] [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: 11/30/2022]
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Salazar J, Ferre R, Guardiola M, Vallve J, Masana L, Ribalta J. PO1-7 RNA DIFFERENTIAL EXPRESSION IN SUBCUTANEOUS ADIPOSE TISSUE OF PATIENTS WITH FAMILIAL COMBINED HYPERLIPIDEMIA. ATHEROSCLEROSIS SUPP 2007. [DOI: 10.1016/s1567-5688(07)71017-6] [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: 10/23/2022]
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Girona J, Guardiola M, Cabré A, Manzanares J, Heras M, Ribalta J, Masana L. Mo-P6:425 The APO5-1131 T>C polymorphism is associated with increased concentrations of vitamin E and triglycerides in type 2 diabetic patients. ATHEROSCLEROSIS SUPP 2006. [DOI: 10.1016/s1567-5688(06)80555-6] [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: 10/23/2022]
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Guardiola M, Ferré R, Alonso-Villaverde C, Coll B, Salazar J, Ribalta J, Masana L. We-P11:247 Protease inhibitor-associated dyslipidemia in HIV patients is strongly influenced by the apolipoprotein A5 gene. ATHEROSCLEROSIS SUPP 2006. [DOI: 10.1016/s1567-5688(06)81600-4] [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: 10/23/2022]
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Ferré R, Guardiola M, Negredo E, Ribalta J, Salazar J, Girona J, Clotet B, Masana L. W06.167 CETP activity is not influenced by Efavirenz. ATHEROSCLEROSIS SUPP 2004. [DOI: 10.1016/s1567-5688(04)90166-9] [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: 10/26/2022]
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30
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Oyarzún E, Guardiola M, Mondión M, Valdés G, Pinto C, Vaccarezza A. [Kidney transplantation and pregnancy: experience with 6 patients]. Rev Med Chil 1993; 121:1382-7. [PMID: 8085061] [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: 01/28/2023]
Abstract
From 1983 to 1991, six pregnant women bearing a renal transplant were admitted at the P Universidad Católica de Chile Clinic Hospital. All of them were under immunosuppressive therapy with azathioprine and prednisone. One patient was also receiving cyclosporine. Four had chronic hypertension; 1 presented intrahepatic cholestasis of pregnancy; 2, premature rupture of membranes, and 3, preeclampsia (superimposed to chronic hypertension). There were no abortions. The median gestational age at delivery was 35.5 weeks. Only one of the six newborns was small for gestational age; the others were of appropriate size. There were no neonatal problems or congenital anomalies. Deterioration of the renal function was observed in two patients. One patient presented rejection to the transplanted kidney. Pregnancy following renal transplantation is not exempt of risks, but multidisciplinary management, close prenatal control and opportune interruption of gestation play a key role in the successful outcome of these pregnancies.
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Affiliation(s)
- E Oyarzún
- Departamento Obstetricia y Ginecología, Facultad de Medicina, Universidad Católica de Chile, Santiago
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Moltó L, Jiménez MC, Sala ML, Guardiola M, Merino J, Campos A. NK, K/ADCC and LDCC differentiation. Thymus 1990; 15:125-8. [PMID: 2139752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- L Moltó
- Department of Medicine, University of Alicante, Spain
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