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Asante F, Bento M, Broszeit S, Bandeira S, Chitará-Nhandimo S, Amoné-Mabuto M, Correia AM. Marine macroinvertebrate ecosystem services under changing conditions of seagrasses and mangroves. Mar Environ Res 2023; 189:106026. [PMID: 37295308 DOI: 10.1016/j.marenvres.2023.106026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 05/01/2023] [Accepted: 05/18/2023] [Indexed: 06/12/2023]
Abstract
This study aimed to investigate the impact of changing environmental conditions on MMI ES in seagrasses and mangroves. We used data from satellite and biodiversity platforms combined with field data to explore the links between ecosystem pressures (habitat conversion, overexploitation, climate change), conditions (environmental quality, ecosystem attributes), and MMI ES (provisioning, regulation, cultural). Both seagrass and mangrove extents increased significantly since 2016. While sea surface temperature showed no significant annual variation, sea surface partial pressure CO2, height above sea level and pH presented significant changes. Among the environmental quality variables only silicate, PO4 and phytoplankton showed significant annual varying trends. The MMI food provisioning increased significantly, indicating overexploitation that needs urgent attention. MMI regulation and cultural ES did not show significant trends overtime. Our results show that MMI ES are affected by multiple factors and their interactions can be complex and non-linear. We identified key research gaps and suggested future directions for research. We also provided relevant data that can support future ES assessments.
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Affiliation(s)
- Frederick Asante
- Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal; MARE - Marine and Environmental Sciences Centre/ARNET - Aquatic Research Network, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal; Université Libre de Bruxelles, Department of Biology of Organisms (DBO), Av. Franklin Roosevelt 50, 1050, Bruxelles, Belgium.
| | - Marta Bento
- Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal; MARE - Marine and Environmental Sciences Centre/ARNET - Aquatic Research Network, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal
| | - Stefanie Broszeit
- Plymouth Marine Laboratory (PML), Prospect Place, The Hoe, Plymouth, PL1 3DH, United Kingdom
| | - Salomão Bandeira
- Departamento de Ciências Biológicas, Faculdade de Ciências, Universidade Eduardo Mondlane, CP 257, Maputo, Mozambique
| | - Sadia Chitará-Nhandimo
- Departamento de Ciências Biológicas, Faculdade de Ciências, Universidade Eduardo Mondlane, CP 257, Maputo, Mozambique
| | - Manuela Amoné-Mabuto
- Departamento de Ciências Biológicas, Faculdade de Ciências, Universidade Eduardo Mondlane, CP 257, Maputo, Mozambique
| | - Alexandra Marçal Correia
- Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal; MARE - Marine and Environmental Sciences Centre/ARNET - Aquatic Research Network, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal.
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Serpa A, Bento M, Caulino-Rocha A, Pawlak S, Cunha-Reis D. Opposing reduced VPAC 1 and enhanced VPAC 2 VIP receptors in the hippocampus of the Li 2+-pilocarpine rat model of temporal lobe epilepsy. Neurochem Int 2022; 158:105383. [PMID: 35787395 DOI: 10.1016/j.neuint.2022.105383] [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: 05/20/2022] [Revised: 06/21/2022] [Accepted: 06/27/2022] [Indexed: 11/17/2022]
Abstract
VIP binding sites are upregulated in mesial temporal lobe epilepsy (MTLE) patients, also suffering from severe cognitive deficits. Although altered VIP and VIP receptor levels were described in rodent models of epilepsy, the VIP receptor subtype(s) were never identified. We now investigated how VPAC1 and VPAC2 receptor levels change in the Li2+-pilocarpine rat model of MTLE. Cognitive decline and altered synaptic plasticity as estimated from phosphorylation of AMPA GluA1 subunit on Ser831 and Ser845 and AMPA GluA1/GluA2 ratio was also probed. Animals showing spontaneous recurrent seizures (SRSs) for at least 4 weeks showed impaired learning in the radial arm maze (RAM) and presented decreased VPAC1 and increased VPAC2 receptor levels. In addition, SRSs rats showed increased AMPA GluA1 phosphorylation in Ser831 and Ser845, marked decrease in GluA1 levels and a milder decrease in GluA2 levels. Consequently, the GluA1/GluA2 ratio was also decreased in SRSs rats. Altered VIP receptor levels may differentially prevent or contribute to MTLE pathology, since VPAC1 receptors promote the endogenous control of LTP, mediate endogenous VIP neuroprotection against altered synaptic plasticity following epileptiform activity, and mediate anti-inflammatory actions in microglia, while VPAC2 receptors mediate VIP endogenous neuroprotection against neonatal excitotoxicity and prevent reactive astrogliosis. This discovery imposes a different mindset for considering VIP receptors as therapeutic targets in MTLE, allowing a differential targeting of the cellular events contributing to epileptogenesis.
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Affiliation(s)
- André Serpa
- Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal; BioISI - Instituto de Biossistemas e Ciências Integratives, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal
| | - Marta Bento
- Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal; BioISI - Instituto de Biossistemas e Ciências Integratives, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal
| | - Ana Caulino-Rocha
- Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal; BioISI - Instituto de Biossistemas e Ciências Integratives, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal
| | - Seweryn Pawlak
- Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal; BioISI - Instituto de Biossistemas e Ciências Integratives, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal
| | - Diana Cunha-Reis
- Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal; BioISI - Instituto de Biossistemas e Ciências Integratives, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal.
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Niza H, Bento M, Lopes LF, Cartaxana A, Correia AM. A picture is worth a thousand words: using digital tools to visualise marine invertebrate diversity data along the coasts of Mozambique and São Tomé & Príncipe. Biodivers Data J 2021; 9:e68817. [PMID: 34690514 PMCID: PMC8486733 DOI: 10.3897/bdj.9.e68817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 07/24/2021] [Indexed: 11/12/2022] Open
Abstract
The amount of biological data available in online repositories is increasing at an exponential rate. However, data on marine invertebrate biodiversity resources from Mozambique and São Tomé and Príncipe are still sparse and scattered. Online repositories are useful instruments for biodiversity research, as they provide a fast access to data from different sources. The use of interactive platforms comprising web mapping are becoming more important, not only for the scientific community, but also for conservation managers, decision-makers and the general public as they allow data presentation in simple and understandable visual schemes. The main goal of this study was to create an interactive online digital map (hosted and available at MARINBIODIV Atlas), through the collection of data from various sources, to visualise marine invertebrate occurrences and distribution across different habitats, namely mangroves, seagrasses, corals and other coastal areas, in Mozambique and São Tomé and Príncipe. The acquired biodiversity data were managed and structured to be displayed as spatial data and to be disseminated using the geographic information system ArcGIS, where data can be accessed, filtered and mapped. The ArcGIS web mapping design tools were used to produce interactive maps to visualise marine invertebrate diversity information along the coasts of Mozambique and São Tomé and Príncipe, through different habitats, offering the foundation for analysing species incidence and allocation information. Understanding the spatial occurrences and distribution of marine invertebrates in both countries can provide a valuable baseline, regarding information and trends on their coastal marine biodiversity.
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Affiliation(s)
- Henrique Niza
- Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal Faculdade de Ciências da Universidade de Lisboa Lisboa Portugal.,MARE - ULisboa, Lisboa, Portugal MARE - ULisboa Lisboa Portugal
| | - Marta Bento
- Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal Faculdade de Ciências da Universidade de Lisboa Lisboa Portugal.,MARE - ULisboa, Lisboa, Portugal MARE - ULisboa Lisboa Portugal
| | - Luis F Lopes
- Instituto de Investigação Científica e Tropical (IHMT) and Global Health and Tropical Medicine (GHTM), Lisboa, Portugal Instituto de Investigação Científica e Tropical (IHMT) and Global Health and Tropical Medicine (GHTM) Lisboa Portugal.,Centre for Ecology, Evolution and Environmental Changes (cE3c), Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal Centre for Ecology, Evolution and Environmental Changes (cE3c), Faculdade de Ciências da Universidade de Lisboa Lisboa Portugal
| | - Alexandra Cartaxana
- MARE - ULisboa, Lisboa, Portugal MARE - ULisboa Lisboa Portugal.,Museu Nacional de História Natural e da Ciência (MNHNC), Lisboa, Portugal Museu Nacional de História Natural e da Ciência (MNHNC) Lisboa Portugal
| | - Alexandra M Correia
- Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal Faculdade de Ciências da Universidade de Lisboa Lisboa Portugal.,MARE - ULisboa, Lisboa, Portugal MARE - ULisboa Lisboa Portugal
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Desantis V, Solimando AG, Saltarella I, Sacco A, Giustini V, Bento M, Lamanuzzi A, Melaccio A, Frassanito MA, Paradiso A, Montagnani M, Vacca A, Roccaro AM. MicroRNAs as a Potential New Preventive Approach in the Transition from Asymptomatic to Symptomatic Multiple Myeloma Disease. Cancers (Basel) 2021; 13:cancers13153650. [PMID: 34359551 PMCID: PMC8344971 DOI: 10.3390/cancers13153650] [Citation(s) in RCA: 12] [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] [Received: 06/11/2021] [Revised: 07/16/2021] [Accepted: 07/19/2021] [Indexed: 01/02/2023] Open
Abstract
Simple Summary Multiple myeloma (MM) is the second most common haematologic malignancy, and it remains an incurable disease despite the advances of novel therapies. It is characterised by a multistep process that arises from a pre-malignant asymptomatic status-defined monoclonal gammopathy of undetermined significance (MGUS), evolves to a middle stage named smouldering myeloma phase (SMM), and culminates in the active disease (MM). Identification of early and non-invasive markers of the disease progression is currently an active field of investigation. In this review, we discuss the role and significance of microRNAs (miRNAs) as potential diagnostic biomarkers to predict the clinical transition from MGUS/SMM status to MM. Abstract Multiple myeloma (MM) is a hematological malignancy characterised by proliferation of clonal plasma cells (PCs) within the bone marrow (BM). Myelomagenesis is a multi-step process which goes from an asymptomatic phase, defined as monoclonal gammopathy of undetermined significance (MGUS), to a smouldering myeloma (SMM) stage, to a final active MM disease, characterised by hypercalcemia, renal failure, bone lesions anemia, and higher risk of infections. Overall, microRNAs (miRNAs) have shown to significantly impact on MM tumorigenesis, as a result of miRNA-dependent modulation of genes involved in pathways known to be crucial for MM pathogenesis and disease progression. We aim to revise the literature related to the role of miRNAs as potential diagnostic and prognostic biomarkers, thus highlighting their key role as novel players within the field of MM and related premalignant conditions.
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Affiliation(s)
- Vanessa Desantis
- Unit of Internal Medicine and Clinical Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari “Aldo Moro”, 70124 Bari, Italy; (V.D.); (A.G.S.); (I.S.); (A.L.); (A.M.)
- Department of Biomedical Sciences and Human Oncology, Pharmacology Section, Medical School, University of Bari “Aldo Moro”, 70124 Bari, Italy;
| | - Antonio Giovanni Solimando
- Unit of Internal Medicine and Clinical Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari “Aldo Moro”, 70124 Bari, Italy; (V.D.); (A.G.S.); (I.S.); (A.L.); (A.M.)
- IRCCS Istituto Tumori “Giovanni Paolo II” of Bari, 70124 Bari, Italy;
| | - Ilaria Saltarella
- Unit of Internal Medicine and Clinical Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari “Aldo Moro”, 70124 Bari, Italy; (V.D.); (A.G.S.); (I.S.); (A.L.); (A.M.)
| | - Antonio Sacco
- Clinical Research Development and Phase I Unit, ASST Spedali Civili di Brescia, 25123 Brescia, Italy; (A.S.); (V.G.)
| | - Viviana Giustini
- Clinical Research Development and Phase I Unit, ASST Spedali Civili di Brescia, 25123 Brescia, Italy; (A.S.); (V.G.)
| | - Marta Bento
- Centro Hospitalar Lisboa Norte, Department of Hematology and Transplantation, Institute of Molecular Medicine, University of Lisbon, 1649-035 Lisbon, Portugal;
| | - Aurelia Lamanuzzi
- Unit of Internal Medicine and Clinical Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari “Aldo Moro”, 70124 Bari, Italy; (V.D.); (A.G.S.); (I.S.); (A.L.); (A.M.)
| | - Assunta Melaccio
- Unit of Internal Medicine and Clinical Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari “Aldo Moro”, 70124 Bari, Italy; (V.D.); (A.G.S.); (I.S.); (A.L.); (A.M.)
| | - Maria Antonia Frassanito
- Unit of General Pathology, Department of Biomedical Sciences and Human Oncology, University of Bari “Aldo Moro”, 70124 Bari, Italy;
| | - Angelo Paradiso
- IRCCS Istituto Tumori “Giovanni Paolo II” of Bari, 70124 Bari, Italy;
| | - Monica Montagnani
- Department of Biomedical Sciences and Human Oncology, Pharmacology Section, Medical School, University of Bari “Aldo Moro”, 70124 Bari, Italy;
| | - Angelo Vacca
- Unit of Internal Medicine and Clinical Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari “Aldo Moro”, 70124 Bari, Italy; (V.D.); (A.G.S.); (I.S.); (A.L.); (A.M.)
- Correspondence: (A.V.); (A.M.R.)
| | - Aldo M. Roccaro
- Clinical Research Development and Phase I Unit, ASST Spedali Civili di Brescia, 25123 Brescia, Italy; (A.S.); (V.G.)
- Correspondence: (A.V.); (A.M.R.)
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Coelho S, Costa C, Santos A, Souteiro P, Oliveira J, Oliveira J, Azevedo I, Torres I, Bento M. P-208 Pancreatic neuroendocrine neoplasia: Experience of a comprehensive cancer center. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.05.262] [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: 10/20/2022] Open
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Bento M, Tomás D, Viegas W, Silva M. Retrotransposons represent the most labile fraction for genomic rearrangements in polyploid plant species. Cytogenet Genome Res 2013; 140:286-94. [PMID: 23899810 DOI: 10.1159/000353308] [Citation(s) in RCA: 14] [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: 11/19/2022] Open
Abstract
Understanding how increased genome size and diversity within polyploid genomes impacts plant evolution and breeding continues to be challenging. Although historical studies by McClintock suggested the importance of transposable elements mediated by polyploidisation on genomic changes, data from plant crosses remain scarce. Despite the absence of a conclusive proof regarding autonomous retrotransposon movement in synthetic allopolyploids, the transposition of retrotransposons and their ubiquitous dispersion in all plant species might explain the positive correlation between the genome size of plants and the prevalence of retrotransposons. Here, we address polyploidisation-mediated rearrangements of retrotransposon-associated sequences and discuss a tendency for a preferential restructuring of large ancestral genomes after polyploidisation. A comparative analysis of the frequency of modifications of retrotransposon-associated sequences in synthetic polyploids with marked differences in genome sizes is presented. Such analyses suggest the absence of a significant difference in the rates of rearrangements despite vast dissimilarities in the retrotransposon copy number between species, which emphasises the high plasticity of this genomic feature. See also the sister article focusing on animals by Arkhipova and Rodriguez in this themed issue.
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Affiliation(s)
- M Bento
- Centro de Botânica Aplicada à Agricultura, Secção de Genética, Instituto Superior de Agronomia, Universidade Técnica de Lisboa, Lisboa, Portugal
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Bento M, Carmo L, Trigo M, Rebelo N, Garcia P. The island nasolabial flap in philtrum reconstruction after bite avulsion: a case report. J Plast Reconstr Aesthet Surg 2009; 62:e487-9. [DOI: 10.1016/j.bjps.2008.08.069] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2008] [Revised: 07/21/2008] [Accepted: 08/12/2008] [Indexed: 10/21/2022]
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Santos L, Pereira S, Amaro T, Costa C, Guimaraes T, Lopes P, Bento M, Carvalho R, Lopes C, Criado B. Molecular cytogenetic analysis of chromosome 7 and 17, c-erbB2 and TP52 genes in urothelial cell carcinoma of the baldder: clinical implications. Eur J Cancer 2001. [DOI: 10.1016/s0959-8049(01)80932-1] [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: 11/26/2022]
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Osório L, Patricio R, Bento M, Pinto G. Whole brain irradiation versus limited fields in the treatment of high-grade malignant gliomas. Eur J Cancer 2001. [DOI: 10.1016/s0959-8049(01)81772-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: 11/17/2022]
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Abstract
A 62-year-old Portuguese man, with no history of familial amyloid polyneuropathy (FAP), and a 2(1/2)-year history of tingling in the toes and sexual dysfunction was found neurophysiologically to have a sensory-motor axonal polyneuropathy. Autonomic tests showed slight sympathetic and marked parasympathetic involvement. Heart, kidney, and eyes were normal. Single strand conformation polymorphism (SSCP) mutation analysis for the transthyretin (TTR) gene was performed. The SSCP pattern suggested the presence of a mutation in exon 2, but was different from the pattern observed for a control representing the most common TTR mutation associated with FAP, i.e., TTR V30M. DNA sequencing analysis revealed an A-to-G transition in the first base of codon 28 normally encoding a valine, giving rise to a methionine residue. The presence of this extra methionine was confirmed by peptide mapping and mass spectrometry analysis. Biopsy of nerve and skin of the propositus showed amyloid deposits that were immunoreactive for TTR. This is a new variant TTR related to late-onset amyloid neuropathy with autonomic dysfunction. This case confirms that TTR mutation screening should be considered in patients with a clinical disorder consistent with amyloid neuropathy even in the absence of a family history.
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Affiliation(s)
- M de Carvalho
- Department of Neurology, Hospital de Santa Maria, Lisbon, and EMG Laboratory, Centro de Estudos Egas Moniz, Lisbon, Portugal
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Sousa O, Carvalho L, Salgado L, Figueiredo G, Bento M, Vieira E. 1176 Uterine sarcomas: Prognostic factors and treatment modalities. Eur J Cancer 1995. [DOI: 10.1016/0959-8049(95)96422-a] [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: 10/27/2022]
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Diaz J, Acosta F, Parrilla P, Sansano T, Bento M, Cura S, Contreras RF, Belmonte JG, Bueno FS, Robles R. Citrate intoxication and blood concentration of ionized calcium in liver transplantation. Transplant Proc 1994; 26:3669-70. [PMID: 7998315] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- J Diaz
- Liver Transplant Unit, University Hospital V. Arrixaca, Murcia, Spain
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Acosta F, Diaz J, Parrilla P, Lizan L, Sansano T, Bento M, Contreras RF, Belmonte JG, Bueno FS, Ramirez P. Right ventricular function during the anhepatic phase in liver transplantation. Transplant Proc 1994; 26:3671-2. [PMID: 7998316] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- F Acosta
- Liver Transplant Unit, University Hospital V. Arrixaca, Murcia, Spain
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Acosta F, Diaz J, Sansano T, Bento M, Cura S, Contreras RF, Belmonte JG, Parrilla P, Bueno FS, Robles R. Prophylactic treatment of metabolic alterations during revascularization in liver transplantation. Transplant Proc 1994; 26:3667-8. [PMID: 7998314] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- F Acosta
- Liver Transplant Unit, University Hospital V. Arrixaca, Murcia, Spain
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de la Morena G, Acosta F, Villegas M, Bento M, Sansano T, Bueno FS, Ramirez P, Ruiperez JA, Parrilla P. Ventricular function during liver reperfusion in hepatic transplantation. A transesophageal echocardiographic study. Transplantation 1994; 58:306-10. [PMID: 8053052] [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
Postreperfusion syndrome (PRS) is the most dramatic and acute hemodynamic alteration that occurs in OLT. Our aim was to determine heart function by hemodynamic monitoring and transesophageal echocardiography during PRS. We studied 24 nonconsecutive patients allocated to 2 groups: group A (n = 8), patients with PRS, and group B (n = 16), patients without PRS. Usual hemodynamic data were obtained simultaneously with transesophageal echocardiography recording of the left ventricular imaging in 4 different stages: after induction of anesthesia, 5 min before the end of the anhepatic phase, between 2 and 5 min after reperfusion, and 5 min after graft reperfusion. The hemodynamic and echocardiographic findings during reperfusion were (group A vs. group B patients): mean arterial pressure, 50.0 +/- 15.2 vs. 74.7 +/- 13.9 mmHg (P < 0.01); pulmonary capillary wedge pressure, 12.7 +/- 6.1 vs. 13.9 +/- 5.7 mmHg (NS); left ventricular ejection fraction, 79.6 +/- 9.3 vs. 83.4 +/- 9.4% (NS); left ventricular end diastolic volume index, 35.5 +/- 12.7 vs. 54.7 +/- 21.3 ml/m2 (P < 0.05); and stroke volume index, 27.9 +/- 8.9 vs. 45.5 +/- 15.9 ml/m2 (P < 0.01). There was a mild decrease in left ventricular compliance in group A. We found no alteration in left ventricular function that can justify PRS. The hemodynamic changes during PRS seemed to be caused by an insufficient increase in preload after unclamping.
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Affiliation(s)
- G de la Morena
- Department of Cardiology, Hospital Universitario Virgen de la Arrixaca, Murcia, Spain
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