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Vilallonga R, Pereira-Cunill JL, Morales-Conde S, Alarcón I, Breton I, Domínguez-Adame E, Ferrer JV, Ruiz-de-Gordejuela AG, Goday A, Lecube A, García-Almenta EM, Rubio MÁ, Tinahones FJ, García-Luna PP. A Spanish Society joint SECO and SEEDO approach to the Post-operative management of the patients undergoing surgery for obesity. Obes Surg 2020; 29:3842-3853. [PMID: 31342249 DOI: 10.1007/s11695-019-04043-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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] [Indexed: 12/11/2022]
Abstract
PURPOSE Bariatric surgery is the method of choice for the management or treatment of obesity. Bariatric surgery brings about several physiological changes in the body and is associated with set of complications. The aim of this study is to provide guidelines on post bariatric surgery management based on consensus by the Spanish society for Obesity Surgery (Sociedad Española de Cirugía de la Obesidad) (SECO) and the Spanish Society for the Study of Obesity (Sociedad Española para el Estudio de la Obesidad) (SEEDO). METHOD The boards proposed seven experts from each society. The experts provided the evidence and a grade of recommendation on the selected topics based on systematic reviews/meta-analysis. A list of clinical practical recommendations levels of evidence and grades of these recommendations was derived from the consensus statements from the members of these societies. RESULTS Seventeen topics related to post-operative management were reviewed after bariatric surgery. The experts came with 47 recommendations and statements. The mean number of persons voting at each statement was 54 (range 36-76). CONCLUSION In this consensus, we have designed a set of guidelines to be followed while managing patients after bariatric surgery. Expertise and knowledge of the clinicians are required to convey suitable considerations to the post-bariatric patients. There should also be extensive follow-up plans for the bariatric surgery patients.
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Affiliation(s)
- R Vilallonga
- Endocrine, metabolic and bariatric Unit, General Surgery Department, Hospital Vall d'Hebron, Center of Excellence for the EAC-BC, Universitat Autònoma de Barcelona, Barcelona, Spain.
| | - J L Pereira-Cunill
- Clinical Nutritión Unit, Endocrinology and Nutrition Service, University Hospital "Virgen del Rocío", Seville, Spain
| | - S Morales-Conde
- Unit of Innovation in Minimally Invasive Surgery, Department of Surgery, University Hospital "Virgen del Rocío", Hospital Quironsalud Sagrado Corazón, University of Sevilla, Sevilla, Spain
| | - I Alarcón
- Unit of Innovation in Minimally Invasive Surgery, Department of Surgery, University Hospital "Virgen del Rocío", Hospital Quironsalud Sagrado Corazón, University of Sevilla, Sevilla, Spain
| | - I Breton
- Unidad de Nutrición Clínica y Dietética del Servicio de Endocrinología y Nutrición del Hospital Gregorio Marañón, Madrid, Spain
| | - E Domínguez-Adame
- UGC Cirugía General y Aparato Digestivo, Hospital Universitario Virgen Macarena, Universidad de Sevilla, Sevilla, Spain
| | | | - A Garcia Ruiz-de-Gordejuela
- Endocrine, metabolic and bariatric Unit, General Surgery Department, Hospital Vall d'Hebron, Center of Excellence for the EAC-BC, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - A Goday
- Servicio de Endocrinología, Hospital del Mar de Barcelona, Departament de Medicina, CIBERobn, ISCIII, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - A Lecube
- Servicio deEndocrinología y Nutrición, Hospital Universitari Arnau de Vilanova de Lleida, Institut de Recerca Biomèdica de Lleida (IRBLleida), Universitat de Lleida (UdL), Avda. Rovira Roure, 80 25198, Lleida, Spain
| | - E Martín García-Almenta
- Unidad Cirugía Esófago-Gástrica, Metabólica y Bariátrica, Hospital Clínico San Carlos, Madrid, Spain
| | - M Á Rubio
- Servicio de Endocrinología y Nutrición, Hospital Clínico San Carlos, Idissc, Facultad de Medicina, Universidad Complutense, Madrid, Spain
| | - F J Tinahones
- Service of Endocrinology and Nutrition, Hospital Clínico Universitario Virgen de Victoria de Malaga, Málaga, Spain
| | - P P García-Luna
- Unidad de Nutrición Clínica y de la Unidad de Obesidad Mórbida (Unidad de Gestión de Endocrinología y Nutrición, UGEN), Hospital Universitario Virgen del Rocío, Seville, Spain
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Bermejo B, Lluch A, Benet I, Sastre JM, Ferrer JV, Garcia T, Chumbes L, Martinez P, Garcia-Conde J. Persistence of occult metastatic cells in bone marrow after adjuvant systemic therapy predicts relapse in localized breast cancer. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- B. Bermejo
- Dept of Hematology and Oncology, Hospital Clinico, Valencia, Spain; Dept of Statistics,University of Valencia, Valencia, Spain
| | - A. Lluch
- Dept of Hematology and Oncology, Hospital Clinico, Valencia, Spain; Dept of Statistics,University of Valencia, Valencia, Spain
| | - I. Benet
- Dept of Hematology and Oncology, Hospital Clinico, Valencia, Spain; Dept of Statistics,University of Valencia, Valencia, Spain
| | - J. M. Sastre
- Dept of Hematology and Oncology, Hospital Clinico, Valencia, Spain; Dept of Statistics,University of Valencia, Valencia, Spain
| | - J. V. Ferrer
- Dept of Hematology and Oncology, Hospital Clinico, Valencia, Spain; Dept of Statistics,University of Valencia, Valencia, Spain
| | - T. Garcia
- Dept of Hematology and Oncology, Hospital Clinico, Valencia, Spain; Dept of Statistics,University of Valencia, Valencia, Spain
| | - L. Chumbes
- Dept of Hematology and Oncology, Hospital Clinico, Valencia, Spain; Dept of Statistics,University of Valencia, Valencia, Spain
| | - P. Martinez
- Dept of Hematology and Oncology, Hospital Clinico, Valencia, Spain; Dept of Statistics,University of Valencia, Valencia, Spain
| | - J. Garcia-Conde
- Dept of Hematology and Oncology, Hospital Clinico, Valencia, Spain; Dept of Statistics,University of Valencia, Valencia, Spain
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Reith ME, Berfield JL, Wang LC, Ferrer JV, Javitch JA. The uptake inhibitors cocaine and benztropine differentially alter the conformation of the human dopamine transporter. J Biol Chem 2001; 276:29012-8. [PMID: 11395483 DOI: 10.1074/jbc.m011785200] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The binding affinity of the cocaine analog [(3)H]2 beta-carbomethoxy-3beta-(4-fluorophenyl) tropane (WIN) for the dopamine transporter (DAT) is increased by the reaction of Cys-90, at the extracellular end of the first transmembrane segment, with methanethiosulfonate (MTS) reagents. Cocaine enhances the reaction of Cys-90 with the sulfhydryl reagents, thereby augmenting the increase in binding. In contrast, cocaine decreases the reaction of Cys-135 and Cys-342, endogenous cysteines in cytoplasmic loops, with MTS reagents. Because this reaction inhibits [(3)H]WIN binding, cocaine protects against the loss of binding caused by reaction of these cysteines. In the present work, we compare the abilities of DAT inhibitors and substrates to affect the reaction of Cys-90, Cys-135, and Cys-342 with MTS ethyltrimethylammonium (MTSET). The results indicate that the different abilities of compounds to protect against the MTSET-induced inhibition of binding are attributable to differences in their abilities to attenuate the inhibitory effects of modification of Cys-135 and Cys-342 as well as to enhance the reaction with Cys-90 and the resulting potentiation of binding. The inhibitor benztropine was unique in its inability to protect Cys-135. Moreover, whereas cocaine, WIN, mazindol, and dopamine enhanced the reaction of Cys-90 with MTSET, benztropine had no effect on this reaction. These two features combine to give benztropine its weak potency in protecting ligand binding to wild-type DAT from MTSET. These results indicate that different inhibitors of DAT, such as cocaine and benztropine, produce different conformational changes in the transporter. There are differences in the psychomotor stimulant-like effects of these compounds, and it is possible that the different behavioral effects of these DAT inhibitors stem from their different molecular actions on DAT.
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Affiliation(s)
- M E Reith
- Department of Biomedical and Therapeutic Sciences, University of Illinois College of Medicine, Peoria, Illinois 61656, USA.
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Abstract
In an effort to develop a tritiated dopamine transporter radioligand with higher affinity than the widely used [(3)H]WIN 35,428, we have synthesized [(3)H]2beta-carbomethoxy-3beta-(3',4'-dichlorophenyl)tropane ([(3)H]MFZ 2-12). Unlabeled MFZ 2-12 and the N-demethylated intermediate (MFZ 2-13) inhibited dopamine uptake by the human dopamine transporter with IC(50)'s of 1.1 and 1.4nM, respectively. The N-nor-intermediate (MFZ 2-13) was treated with CT(3)I resulting in [(3)H]MFZ 2-12; S.A.=80 Ci/mmol). [(3)H]MFZ 2-12 reversibly bound with a K(D) of 2.8nM to human dopamine transporter expressed heterologously in EM4 cells.
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Affiliation(s)
- A H Newman
- Medicinal Chemistry Section, National Institute on Drug Abuse-Intramural Research Program, 5500Nathan Shock Drive, MD 21224, Baltimore, USA.
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Abstract
There is evidence to suggest that dopamine (DA) oxidizes to form dopamine ortho-quinone (DAQ), which binds covalently to nucleophilic sulfhydryl groups on protein cysteinyl residues. This reaction has been shown to inhibit dopamine uptake, as well as other biological processes. We have identified specific cysteine residues in the human dopamine transporter (hDAT) that are modified by this electron-deficient substrate analog. DAQ reactivity was inferred from its effects on the binding of [(3)H]2-beta-carbomethoxy-3-beta-(4-fluorophenyl)tropane (beta-CFT) to hDAT cysteine mutant constructs. One construct, X5C, had four cysteines mutated to alanine and one to phenylalanine (Cys(90)A, Cys(135)A, C306A, C319F and Cys(342)A). In membrane preparations 1 mM DAQ did not affect [(3)H]beta-CFT binding to X5C hDAT, in contrast to its effect in wild-type hDAT in which it reduced the B:(max) value by more than half. Wild-type cysteines were substituted back into X5C, one at a time, and the ability of DAQ to inhibit [(3)H]beta-CFT binding was assessed. Reactivity of DAQ with Cys(90) increased the affinity of [(3)H]beta-CFT for the transporter, whereas reactivity with Cys(135) decreased the affinity of [(3)H]beta-CFT. DAQ did not change the K:(D) for [(3)H]beta-CFT binding to wild-type. The reactivity of DAQ at Cys(342) decreased B:(max) to the same degree as wild-type. The latter result suggests that Cys(342) is the wild-type residue most responsible for DAQ-induced inhibition of [(3)H]beta-CFT binding.
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Affiliation(s)
- R E Whitehead
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, USA
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Saunders C, Ferrer JV, Shi L, Chen J, Merrill G, Lamb ME, Leeb-Lundberg LM, Carvelli L, Javitch JA, Galli A. Amphetamine-induced loss of human dopamine transporter activity: an internalization-dependent and cocaine-sensitive mechanism. Proc Natl Acad Sci U S A 2000; 97:6850-5. [PMID: 10823899 PMCID: PMC18764 DOI: 10.1073/pnas.110035297] [Citation(s) in RCA: 310] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The dopamine transporter (DAT) is a target of amphetamine (AMPH) and cocaine. These psychostimulants attenuate DAT clearance efficiency, thereby increasing synaptic dopamine (DA) levels. Re-uptake rate is determined by the number of functional transporters at the cell surface as well as by their turnover rate. Here, we present evidence that DAT substrates, including AMPH and DA, cause internalization of human DAT, thereby reducing transport capacity. Acute treatment with AMPH reduced the maximal rate of [(3)H]DA uptake, decreased AMPH-induced currents, and significantly redistributed the immunofluorescence of an epitope-tagged DAT from the plasma membrane to the cytosol in human embryonic kidney 293 cells. Conversely, DAT inhibitors, such as cocaine, mazindol, and nomifensine, when administered with AMPH, blocked the reduction in [(3)H]DA uptake and the redistribution of DAT immunofluorescence to the cytosol. The reductions of [(3)H]DA uptake and AMPH-induced DAT internalization also were inhibited by coexpression of a dominant negative mutant of dynamin I (K44A), indicating that endocytosis modulates transport capacity, likely through a clathrin-mediated pathway. With this mechanism of regulation, acute application of AMPH would reduce DA uptake not only by direct competition for uptake, but also by reducing the available cell-surface DAT. Moreover, AMPH-induced internalization might diminish the amount of DAT available for DA efflux, thereby modulating the cytotoxic effects of elevated extracellular DA.
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Affiliation(s)
- C Saunders
- Departments of Pharmacology and Biochemistry, University of Texas Health Science Center, 7703 Floyd Curl Drive, San Antonio, TX 78248, USA
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7
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Abstract
The effect of covalent sulfhydryl modification on dopamine uptake by the human dopamine transporter was determined by rotating disc electrode voltammetry. A transporter construct, X5C, with five mutated cysteines (C90A, C135A, C306A, C319F, and C342A) and the constructs into which the wild-type cysteines were substituted back into X5C, one at a time, all showed nearly normal binding affinity for [(3)H]CFT and for cocaine, but they displayed significant reductions in K(m) and V(max) for DA uptake. Reaction of Cys-90 or Cys-306 with impermeant methanethiosulfonate derivatives enhanced dopamine uptake to a similar extent as the previously observed enhancement of [(3)H]CFT binding caused by the same reaction, suggesting that cocaine may bind preferentially to a conformation in the transport cycle. m-Tyramine increased the rate of reaction of (2-aminoethyl)methanethiosulfonate (MTSEA) with X-A342C, the construct with a cytoplasmic loop residue Cys-342 restored. This m-tyramine-induced increase in reactivity appeared to require the inward transport rather than the outward transport or external binding of m-tyramine, and it was prevented by cocaine. Thus, inward translocation of substrates may involve structural rearrangement of hDAT, which likely exposes Cys-342 to reaction with MTSEA, and Cys-342 may be located on a part of the transporter associated with cytoplasmic gating.
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Affiliation(s)
- N Chen
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, USA.
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Zazpe C, Balén EM, Ferrer JV, Sáez MJ, Guerrero D, Herrera J, Lera JM. Influence of cold ischemia time on oxidative stress after experimental pancreas transplantation. Transplant Proc 1999; 31:2559. [PMID: 10500716 DOI: 10.1016/s0041-1345(99)00499-6] [Citation(s) in RCA: 3] [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] [Indexed: 11/16/2022]
Affiliation(s)
- C Zazpe
- Department of Surgery, Hospital de Navarra, Pamplona, Spain
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Ferrer JV, Ariceta J, Guerrero D, Balén E, Herrera J, Lera JM. Prevention by somatostatine and N-acetylcisteine of multiorgan failure mediated by oxidative stress after intestinal ischemia. Transplant Proc 1999; 31:2570-1. [PMID: 10500722 DOI: 10.1016/s0041-1345(99)00505-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- J V Ferrer
- Department of Surgery, Hospital de Navarra, Pamplona, Spain
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10
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Ariceta J, Ferrer JV, Guerrero D, Tellechea E, Balén E, Lera JM. Metabolism of the intestine with intermediate ischemia after intestinal ischemia-reperfusion injury: therapeutic effects of somatostatin. Transplant Proc 1999; 31:2572. [PMID: 10500723 DOI: 10.1016/s0041-1345(99)00506-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- J Ariceta
- Department of Surgery, Hospital de Navarra, Pamplona, Spain
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11
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Montón S, Herrera J, Ferrer JV, Guerrero D, Balén E, Lera JM. Experimental model of non-heart-beating donors: oxidative stress metabolism in kidney after cardiac arrest (30 minutes of warm ischemia) and reimplantation 24 hours later. Transplant Proc 1999; 31:2350-1. [PMID: 10500613 DOI: 10.1016/s0041-1345(99)00374-7] [Citation(s) in RCA: 3] [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] [Indexed: 11/18/2022]
Affiliation(s)
- S Montón
- General Surgery Department, Hospital de Navarra, Pamplona, Spain
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12
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Zazpe C, Ferrer JV, Blázquez L, Ariceta J, Herrera J, Lera JM. [Carcinoid tumor presenting as intestinal necrosis]. Rev Esp Enferm Dig 1998; 90:889-90. [PMID: 9973854] [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: 02/10/2023]
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Ferrer JV, Ariceta J, Guerrero D, Gomis T, Larrea MM, Balén E, Lera JM. Allopurinol and N-acetylcysteine avoid 60% of intestinal necrosis in an ischemia-reperfusion experimental model. Transplant Proc 1998; 30:2672. [PMID: 9745543 DOI: 10.1016/s0041-1345(98)00784-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- J V Ferrer
- Department of Surgery and Biochemistry, Hospital de Navarra, Spain
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Ferrer JV, Ariceta J, Guerrero D, Gomis T, Larrea MM, Herrera J, Lera JM. Somatostatine does not decrease intestinal necrosis in an ischemia-reperfusion experimental model. Transplant Proc 1998; 30:2671. [PMID: 9745542 DOI: 10.1016/s0041-1345(98)00783-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- J V Ferrer
- Department of Surgery and Biochemistry, Hospital de Navarra, Spain
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Ferrer JV, Javitch JA. Cocaine alters the accessibility of endogenous cysteines in putative extracellular and intracellular loops of the human dopamine transporter. Proc Natl Acad Sci U S A 1998; 95:9238-43. [PMID: 9689064 PMCID: PMC21322 DOI: 10.1073/pnas.95.16.9238] [Citation(s) in RCA: 107] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Cocaine and other psychostimulants act by blocking the dopamine transporter. Binding of the cocaine analog, [3H]2-beta-carbomethoxy-3-beta-(4-fluorophenyl) tropane (CFT) to the dopamine transporter is sensitive to polar sulfhydryl-specific derivatives of methanethiosulfonate (MTS). These reagents preferentially react with water-accessible, reduced cysteines. The human dopamine transporter has 13 cysteines. Their topology is not completely determined. We sought to identify those cysteine residues the modification of which affects CFT binding and to determine the topology of these reactive cysteines. We mutated each of the cysteines, one at a time and in various combinations, to residues that preserved binding and transport, and we tested the sensitivity of each of the mutant transporters to the reagents. One construct, X5C, had five mutated cysteines (C90A, C135A, C306A, C319F, and C342A). Using a membrane preparation in which both extracellular and intracellular cysteines could be accessible, we found that CFT binding in X5C, as compared with wild-type transporter, was two orders of magnitude less sensitive to MTS ethylammonium (MTSEA). The wild-type cysteines were substituted back into X5C, one at a time, and these constructs were tested in cells and in membranes. Cys-90 and Cys-306 appear to be extracellular, and Cys-135 and Cys-342 appear to be intracellular. Each of these residues is predicted to be in extramembranous loops. The binding of cocaine increases the rate of reaction of MTSEA and MTS ethyltrimethylammonium with the extracellular Cys-90 and therefore acts by inducing a conformational change. Cocaine decreases the rate of reaction of MTSEA with Cys-135 and Cys-342, acting either directly or indirectly on these intracellular residues.
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Affiliation(s)
- J V Ferrer
- Center for Molecular Recognition and Departments of Pharmacology, College of Physicians and Surgeons, Columbia University, 630 W. 168th Street, New York, NY 10032, USA
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Balén E, Cienfuegos JA, Pardo F, Hernández JL, Ferrer JV, Herrera J, Lera JM. Pancreatic preservation in a multiorgan procurement procedure and transplantation. Transplant Proc 1998; 30:423-4. [PMID: 9532110 DOI: 10.1016/s0041-1345(97)01339-0] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- E Balén
- Department of Surgery, Clínica Universitaria, Universidad de Navarra, Pamplona, Spain
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17
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Balén EM, Ferrer JV, Zazpe C, Guerrero D, Sáez MJ, Herrera J, Lera JM. Assessment of oxidative stress in a pancreatic warm ischemia-reperfusion model. Transplant Proc 1998; 30:569-70. [PMID: 9532179 DOI: 10.1016/s0041-1345(97)01407-3] [Citation(s) in RCA: 3] [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] [Indexed: 02/07/2023]
Affiliation(s)
- E M Balén
- Unidad de Investigación Biomédica, Hospital de Navarra, Pamplona, Spain
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Ariceta J, Ferrer JV, Blázquez L, Balen E, Herrera J, Lera JM. [Acute cholecystitis: analysis of the different therapeutic approaches in a General Surgery Service during the years 1994-1996]. An Sist Sanit Navar 1997; 20:319-24. [PMID: 12891431 DOI: 10.23938/assn.0623] [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: 11/18/2022]
Abstract
INTRODUCTION The commonly accepted approach in the treatment of acute cholecystitis is urgent cholecystectomy. Laparoscopy has renewed interest in the option of "cooling" the inflammatory process, in order to subsequently carry out a programmed cholecystectomy through the technique mentioned. We present an analysis of the data collected on hospital stay and medico-surgical complications in both therapeutic options. The aim of this work is to reflect on the results obtained in the treatment of acute cholecystitis and to evaluate the results of the application of laparoscopic cholecystectomy in the emergency area. MATERIAL AND METHODS 152 patients diagnosed with acute cholecystitis are studied. They are distributed in 3 groups, analysing the simple and accumulated hospital stay, the index of medical and surgical complications and mortality. RESULTS Of the 152 patients with a diagnosis of acute cholecystitis, 91 (59.8%) were operated on in their first admission, 47 (30.9%) were treated using "cooling" of the process to be operated on in a second admission and 14 (9.3%) by means of percutaneous cholecystostomy. A total of 29 patients were readmitted, 4 for relapse of acute cholecystitis and 25 for programmed operations. Urgent conventional cholecystectomy shows a greater rate of infections. The cholecystectomy on second admission supposes a moderate increase of the accumulated average stay. 17% of these patients were operated on using open surgery. CONCLUSIONS Urgent surgery seems the most suitable approach in acute cholecystitis. The employment of laparoscopic surgery in these cases probably reduces the rate of the medical and surgical complications due to laparotomy in infectious acute pathology, and increases the comfort of the patient
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Affiliation(s)
- J Ariceta
- Servicio Cirugía General y Digestiva, Hospital de Navarra
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19
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Abstract
In addition to nucleotide excision repair (NER), the fission yeast Schizosaccharomyces pombe possesses a UV damage endonuclease (UVDE) for the excision of cyclobutane pyrimidine dimers and 6-4 pyrimidine pyrimidones. We have previously described UVDE as part of an alternative excision repair pathway, UVDR, for UV damage repair. The existence of two excision repair processes has long been postulated to exist in S.pombe, as NER-deficient mutants are still proficient in the excision of UV photoproducts. UVDE recognizes the phosphodiester bond immediately 5'of the UV photoproducts as the initiating event in this process. We show here that UVDE activity is inducible at both the level of uve1+ mRNA and UVDE enzyme activity. Further, we show that UVDE activity is regulated by the product of the rad12 gene.
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Affiliation(s)
- S Davey
- Cancer Research Laboratories, Queen's University, Kingston, Canada K7L 3N6
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20
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Ferrer JV, Herrera J, Balen E, Lera JM. [Utilisation of organs proceeding from donors with heart failure: review of the pathogenesis of organic damage and the possible mechanisms of prevention]. An Sist Sanit Navar 1997; 20:47-55. [PMID: 12891458 DOI: 10.23938/assn.0597] [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: 11/18/2022]
Abstract
There is an evident imbalance between the number of patients awaiting a kidney transplant and the availability of organs proceeding from donors with brain death. A high number of patients die each day from heart failure, whose organs could be used for transplants if specific care is employed. Although centres do exist where these methods of extraction are established, the problems of organic damage have yet to be resolved, since one third of the organs are still lost, besides the increase in the need for early dialysis, and the number of dysfunctioning grafts two years after the transplant, when this type or organ is employed. There is increasingly detailed knowledge of the pathogenesis of organic damage following heart failure and reanimation, as well as of the damage following the conservation and reimplantation of the kidney. Knowledge of the maximum time of hot ischemic that an organ can withstand is of crucial importance if organs are not to be unduly discarded. Besides, the increasing understanding of the physiopathology of oxidative stress could make it possible for us, through the use of antioxidants, to attempt to improve the utilisation of the organs and diminish the incidence of dysfunctions and rejections.
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Affiliation(s)
- J V Ferrer
- Servicio de Cirugía General y Digestiva, Hospital de Navarra, Pamplona
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21
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Ferrer JV, Soriano P, Zazpe C, Vicente F, Herrera J, Lera JM. Pseudoaneurysm of the inferior epigastric artery. Pathogenesis, diagnosis, and treatment. Arch Surg 1996; 131:102-3. [PMID: 8546568 DOI: 10.1001/archsurg.1996.01430130104024] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
We present a new case of pseudoaneurysm of the abdominal wall, subsidiary to the inferior epigastric artery, associated with the use of discharge sutures. Pseudoaneurysms are a well-known complication of surgery, puncture, or trauma. Pseudoaneurysms of the inferior epigastric artery are very infrequent. We know of only two cases in the literature. In both cases, the pseudoaneurysm was associated with the use of discharge sutures. We discuss its pathogenesis, diagnosis, and treatment.
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Affiliation(s)
- J V Ferrer
- Service of General and Gastrointestinal Surgery, Hospital de Navarra, Pamplona, Spain
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22
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Abstract
DNA lesions induced by UV light, cyclobutane pyrimidine dimers, and (6-4)pyrimidine pyrimidones are known to be repaired by the process of nucleotide excision repair (NER). However, in the fission yeast Schizosaccharomyces pombe, studies have demonstrated that at least two mechanisms for excising UV photo-products exist; NER and a second, previously unidentified process. Recently we reported that S. pombe contains a DNA endonuclease, SPDE, which recognizes and cleaves at a position immediately adjacent to cyclobutane pyrimidine dimers and (6-4)pyrimidine pyrimidones. Here we report that the UV-sensitive S. pombe rad12-502 mutant lacks SPDE activity. In addition, extracts prepared from the rad12-502 mutant are deficient in DNA excision repair, as demonstrated in an in vitro excision repair assay. DNA repair activity was restored to wild-type levels in extracts prepared from rad12-502 cells by the addition of partially purified SPDE to in vitro repair reaction mixtures. When the rad12-502 mutant was crossed with the NER rad13-A mutant, the resulting double mutant was much more sensitive to UV radiation than either single mutant, demonstrating that the rad12 gene product functions in a DNA repair pathway distinct from NER. These data directly link SPDE to this alternative excision repair process. We propose that the SPDE-dependent DNA repair pathway is the second DNA excision repair process present in S. pombe.
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Affiliation(s)
- G A Freyer
- Center for Radiological Research, Columbia University College of Physicians and Surgeons, New York, New York 10032, USA
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23
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Bort Martí J, Ferrer JV, Chiquillo Barber MT, Vera Sempere F. [Metastatic splenomegaly as the first manifestation of a breast cancer]. Med Clin (Barc) 1992; 99:119. [PMID: 1321316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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24
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Sastre J, Rodriguez JV, Pallardó FV, Gasco E, Asensi M, Ferrer JV, Miquel J, Viña J. Effect of aging on metabolic zonation in rat liver: acinar distribution of GSH metabolism. Mech Ageing Dev 1992; 62:181-90. [PMID: 1569787 DOI: 10.1016/0047-6374(92)90054-h] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [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: 12/27/2022]
Abstract
The effect of age on the glutathione antioxidant system and its acinar distribution in rat liver was studied. GSH/GSSG ratio in blood and liver was lower in old than in young rats. Hepatic glutathione peroxidase and glutathione S-transferase activities were higher in old than in young rats, whereas hepatic gamma-glutamyl transpeptidase activity was lower in old than in young rats. Glutathione reductase and glucose-6-phosphate dehydrogenase activities did not change with age in rat liver. Total glutathione levels and glutathione peroxidase activity were higher in periportal than in perivenous areas of young rats, but this heterogeneous distribution did not occur in old rats. No change with age was found in hepatic zonation of glutathione reductase and glucose-6-phosphate dehydrogenase.
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Affiliation(s)
- J Sastre
- Departamento de Fisiología, Facultad de Medicina, Universitat de Valencia, Spain
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25
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Ferrer JV, Calabuig J. [Changes in age and the influence of physical exercise and hypocaloric diet on different health parameters]. Rev Med Univ Navarra 1991; 36:7-11. [PMID: 1820595] [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: 12/28/2022]
Affiliation(s)
- J V Ferrer
- Departamento de Cardiología, Clínica Universitaria, Universidad de Navarra
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26
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Abstract
Eye lenses from young rats or mice synthesize GSH from methionine or N-acetylcysteine. However, lenses from old animals do not synthesize GSH from methionine. This is due to the absence of cystathionase activity in old lenses. GSH monoethyl ester, but not free GSH, increases GSH content and protects the lens against experimental oxidative stress. The importance of these results in the prevention of cataractogenesis is discussed.
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Affiliation(s)
- J V Ferrer
- Departamento de Fisiología, Facultad Medicina, Valencia, Spain
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27
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Ferrer JV. [Is arterial hypertension correctly treated in the elderly?]. Rev Clin Esp 1990; 186:143. [PMID: 2356354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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