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Gómez-Seguí I, Francés Aracil E, Mingot-Castellano ME, Vara Pampliega M, Goterris Viciedo R, García Candel F, Pascual Izquierdo C, Del Río Garma J, Guerra Domínguez L, Vicuña Andrés I, Garcia-Arroba Peinado J, Zalba Marcos S, Vidan Estévez JM, González Arias E, Campuzano Saavedra V, García Gala JM, Ortega Sanchez S, Martínez Nieto J, Pardo Gambarte L, Solé Rodríguez M, Fernández-Docampo M, Avila Idrovo LF, Hernández L, Cid J, de la Rubia Comos J. Immune thrombotic thrombocytopenic purpura in older patients: Results from the Spanish TTP Registry (REPTT). Br J Haematol 2023; 203:860-871. [PMID: 37723363 DOI: 10.1111/bjh.19109] [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: 06/06/2023] [Revised: 08/31/2023] [Accepted: 09/05/2023] [Indexed: 09/20/2023]
Abstract
Immune thrombotic thrombocytopenic purpura (iTTP) is an ultra-rare disease that seldom occurs in the elderly. Few reports have studied the clinical course of iTTP in older patients. In this study, we have analysed the clinical characteristics at presentation and response to therapy in a series of 44 patients with iTTP ≥60 years at diagnosis from the Spanish TTP Registry and compared them with 209 patients with <60 years at diagnosis from the same Registry. Similar symptoms and laboratory results were described in both groups, except for a higher incidence of renal dysfunction among older patients (23% vs. 43.1%; p = 0.008). Front-line treatment in patients ≥60 years was like that administered in younger patients. Also, no evidence of a difference in clinical response and overall survival was seen in both groups. Of note, 14 and 25 patients ≥60 years received treatment with caplacizumab and rituximab, respectively, showing a favourable safety and efficacy profile, like that observed in patients <60 years.
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Affiliation(s)
- I Gómez-Seguí
- H. Universitario y Politécnico La Fe, Valencia, Spain
| | | | - M E Mingot-Castellano
- Hematology Department, Instituto de Biomedicina de Sevilla, H. U. Virgen del Rocio, Sevilla, Spain
| | | | | | | | | | - J Del Río Garma
- Complejo Hospitalario Universitario de Orense, Ourense, Spain
| | | | | | | | | | | | | | | | | | - S Ortega Sanchez
- Banc de Sang i Teixits, L'Hospitalet de Llobregat, Barcelona, Spain
| | - J Martínez Nieto
- Instituto de Investigación Biomédica del Hospital Clínico San Carlos, Madrid, Spain
| | | | | | | | | | | | - J Cid
- H. Clínic, Barcelona, Spain
| | - J de la Rubia Comos
- H. Universitario y Politécnico La Fe, Valencia, Spain
- Hematology Department, Universidad Católica "San Vicente Mártir", Valencia, Spain
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2
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Domínguez-Acosta O, Vega L, Estrada-Muñiz E, Rodríguez MS, Gonzalez FJ, Elizondo G. Activation of aryl hydrocarbon receptor regulates the LPS/IFNγ-induced inflammatory response by inducing ubiquitin-proteosomal and lysosomal degradation of RelA/p65. Biochem Pharmacol 2018; 155:141-149. [PMID: 29935959 DOI: 10.1016/j.bcp.2018.06.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [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: 05/21/2018] [Accepted: 06/19/2018] [Indexed: 01/20/2023]
Abstract
Several studies have identified the aryl hydrocarbon receptor (AhR) as a negative regulator of the innate and adaptive immune responses. However, the molecular mechanisms by which this transcription factor exerts such modulatory effects are not well understood. Interaction between AhR and RelA/p65 has previously been reported. RelA/p65 is the major NFκB subunit that plays a critical role in immune responses to infection. The aim of the present study was to determine whether the activation of AhR disrupted RelA/p65 signaling in mouse peritoneal macrophages by decreasing its half-life. The data demonstrate that the activation of AhR by TCDD and β-naphthoflavone (β-NF) decreased protein levels of the pro-inflammatory cytokines TNF-α, IL-6 and IL-12 after macrophage activation with LPS/IFNγ. In an AhR-dependent manner, TCDD treatment induces RelA/p65 ubiquitination and proteosomal degradation, an effect dependent on AhR transcriptional activity. Activation of AhR also induced lysosome-like membrane structure formation in mouse peritoneal macrophages and RelA/p65 lysosome-dependent degradation. In conclusion, these results demonstrate that AhR activation promotes RelA/p65 protein degradation through the ubiquitin proteasome system, as well as through the lysosomes, resulting in decreased pro-inflammatory cytokine levels in mouse peritoneal macrophages.
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Affiliation(s)
- O Domínguez-Acosta
- Departamento de Biología Celular, CINVESTAV-IPN, Zacatenco, México D. F., Av. IPN 2508, C.P. 07360, Mexico
| | - L Vega
- Departamento de Toxicología, CINVESTAV-IPN, Zacatenco, México D. F., Av. IPN 2508, C.P. 07360, Mexico
| | - E Estrada-Muñiz
- Departamento de Toxicología, CINVESTAV-IPN, Zacatenco, México D. F., Av. IPN 2508, C.P. 07360, Mexico
| | - M S Rodríguez
- Institut des Technologies Avancées en Sciences du Vivant (ITAV) CNRS-USR3505, Institut de Pharmacologie et de Biologie Structurale (IPBS) CNRS UMR8601, Université de Toulouse, 31106 Toulouse, France
| | - F J Gonzalez
- Laboratory of Metabolism, NCI, National Institutes of Health, Bethesda, MD 20892, USA
| | - G Elizondo
- Departamento de Biología Celular, CINVESTAV-IPN, Zacatenco, México D. F., Av. IPN 2508, C.P. 07360, Mexico.
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3
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de la Cruz-Herrera CF, Baz-Martínez M, Lang V, El Motiam A, Barbazán J, Couceiro R, Abal M, Vidal A, Esteban M, Muñoz-Fontela C, Nieto A, Rodríguez MS, Collado M, Rivas C. Conjugation of SUMO to p85 leads to a novel mechanism of PI3K regulation. Oncogene 2015; 35:2873-80. [DOI: 10.1038/onc.2015.356] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Revised: 07/17/2015] [Accepted: 08/22/2015] [Indexed: 12/19/2022]
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4
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de la Cruz-Herrera CF, Campagna M, Lang V, del Carmen González-Santamaría J, Marcos-Villar L, Rodríguez MS, Vidal A, Collado M, Rivas C. SUMOylation regulates AKT1 activity. Oncogene 2014; 34:1442-50. [PMID: 24704831 DOI: 10.1038/onc.2014.48] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 11/27/2013] [Accepted: 01/06/2014] [Indexed: 01/09/2023]
Abstract
Serine threonine kinase AKT has a central role in the cell, controlling survival, proliferation, metabolism and angiogenesis. Deregulation of its activity underlies a wide range of pathological situations, including cancer. Here we show that AKT is post-translationally modified by the small ubiquitin-like modifier (SUMO) protein. Interestingly, neither SUMO conjugation nor activation of SUMOylated AKT is regulated by the classical AKT targeting to the cell membrane or by the phosphoinositide 3-kinase pathway. We demonstrate that SUMO induces the activation of AKT, whereas, conversely, down-modulation of the SUMO machinery diminishes AKT activation and cell proliferation. Furthermore, an AKT SUMOylation mutant shows reduced activation, and decreased anti-apoptotic and pro-tumoral activities in comparison with the wild-type protein. These results identify SUMO as a novel key regulator of AKT phosphorylation and activity.
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Affiliation(s)
- C F de la Cruz-Herrera
- Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología-CSIC, Madrid, Spain
| | - M Campagna
- Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología-CSIC, Madrid, Spain
| | - V Lang
- Ubiquitylation and Cancer Molecular Biology laboratory, Inbiomed, San Sebastian-Donostia, Gipuzkoa, Spain
| | | | - L Marcos-Villar
- Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología-CSIC, Madrid, Spain
| | - M S Rodríguez
- Ubiquitylation and Cancer Molecular Biology laboratory, Inbiomed, San Sebastian-Donostia, Gipuzkoa, Spain
| | - A Vidal
- Departamento de Fisioloxía and Centro de Investigación en Medicina Molecular (CIMUS), Universidade de Santiago de Compostela, Instituto de Investigaciones Sanitarias (IDIS), Santiago de Compostela, Spain
| | - M Collado
- Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS), Complexo Hospitalario Universitario de Santiago de Compostela (CHUS), SERGAS, Santiago de Compostela, Spain
| | - C Rivas
- 1] Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología-CSIC, Madrid, Spain [2] Centro de Investigación en Medicina Molecular (CIMUS), Universidade de Santiago de Compostela, Instituto de Investigaciones Sanitarias (IDIS), Santiago de Compostela, Spain
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5
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González-Santamaría J, Campagna M, Ortega-Molina A, Marcos-Villar L, de la Cruz-Herrera CF, González D, Gallego P, Lopitz-Otsoa F, Esteban M, Rodríguez MS, Serrano M, Rivas C. Regulation of the tumor suppressor PTEN by SUMO. Cell Death Dis 2012; 3:e393. [PMID: 23013792 PMCID: PMC3461367 DOI: 10.1038/cddis.2012.135] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Revised: 08/24/2012] [Accepted: 08/27/2012] [Indexed: 01/04/2023]
Abstract
The crucial function of the PTEN tumor suppressor in multiple cellular processes suggests that its activity must be tightly controlled. Both, membrane association and a variety of post-translational modifications, such as acetylation, phosphorylation, and mono- and polyubiquitination, have been reported to regulate PTEN activity. Here, we demonstrated that PTEN is also post-translationally modified by the small ubiquitin-like proteins, small ubiquitin-related modifier 1 (SUMO1) and SUMO2. We identified lysine residue 266 and the major monoubiquitination site 289, both located within the C2 domain required for PTEN membrane association, as SUMO acceptors in PTEN. We demonstrated the existence of a crosstalk between PTEN SUMOylation and ubiquitination, with PTEN-SUMO1 showing a reduced capacity to form covalent interactions with monoubiquitin and accumulation of PTEN-SUMO2 conjugates after inhibition of the proteasome. Moreover, we found that virus infection induces PTEN SUMOylation and favors PTEN localization at the cell membrane. Finally, we demonstrated that SUMOylation contributes to the control of virus infection by PTEN.
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Affiliation(s)
- J González-Santamaría
- Centro Nacional de Biotecnología, CSIC, Campus Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - M Campagna
- Centro Nacional de Biotecnología, CSIC, Campus Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - A Ortega-Molina
- Centro Nacional de Investigaciones Oncológicas, Melchor Fernández Almagro, 28029 Madrid, Spain
| | - L Marcos-Villar
- Centro Nacional de Biotecnología, CSIC, Campus Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - C F de la Cruz-Herrera
- Centro Nacional de Biotecnología, CSIC, Campus Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - D González
- Centro Nacional de Biotecnología, CSIC, Campus Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - P Gallego
- Centro Nacional de Biotecnología, CSIC, Campus Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - F Lopitz-Otsoa
- Proteomics Unit, CIC bioGUNE, CIBERehd, Bizkaia Technology Park. Building 801A, 48160 Derio, Spain
| | - M Esteban
- Centro Nacional de Biotecnología, CSIC, Campus Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - M S Rodríguez
- Proteomics Unit, CIC bioGUNE, CIBERehd, Bizkaia Technology Park. Building 801A, 48160 Derio, Spain
- Ubiquitylation and Cancer Molecular Biology laboratory, Inbiomed, San Sebastian-Donostia, 20009 Gipuzkoa, Spain
| | - M Serrano
- Centro Nacional de Investigaciones Oncológicas, Melchor Fernández Almagro, 28029 Madrid, Spain
| | - C Rivas
- Centro Nacional de Biotecnología, CSIC, Campus Universidad Autónoma de Madrid, 28049 Madrid, Spain
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6
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Rodríguez JP, Achleitner S, Möderl M, Rauch W, Maksimović C, McIntyre N, Díaz-Granados MA, Rodríguez MS. Sediment and pollutant load modelling using an integrated urban drainage modelling toolbox: an application of City Drain. Water Sci Technol 2010; 61:2273-2282. [PMID: 20418624 DOI: 10.2166/wst.2010.139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Numerical and computational modelling of flow and pollutant dynamics in urban drainage systems is becoming more and more integral to planning and design. The main aim of integrated flow and pollutant models is to quantify the efficiency of different measures at reducing the amount of pollutants discharged into receiving water bodies and minimise the consequent negative water quality impact. The open source toolbox CITY DRAIN developed in the Matlab/Simulink environment, which was designed for integrated modelling of urban drainage systems, is used in this work. The goal in this study was to implement and test computational routines for representing sediment and pollutant loads in order to evaluate catchment surface pollution. Tested models estimate the accumulation, erosion and transport of pollutants--aggregately--on urban surfaces and in sewers. The toolbox now includes mathematical formulations for accumulation of pollutants during dry weather period and their wash-off during rainfall events. The experimental data acquired in a previous research project carried out by the Environmental Engineering Research Centre (CIIA) at the Universidad de los Andes in Bogotá (Colombia) was used for the calibration of the models. Different numerical approaches were tested for their ability to calibrate to the sediment transport conditions. Initial results indicate, when there is more than one peak during the rainfall event duration, wash-off processes probably can be better represented using a model based on the flow instead of the rainfall intensity. Additionally, it was observed that using more detailed models (compared with an instantaneous approach) for representing pollutant accumulation do not necessarily lead to better results.
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Affiliation(s)
- J P Rodríguez
- Department of Civil and Environmental Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.
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7
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Seoane G, Valiña MD, Rodríguez MS, Martín M, Ferraces MJ. [Individual differences in hypothetic-deductive reasoning: importance of cognitive skills and flexibility]. Psicothema 2007; 19:206-11. [PMID: 17425888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Recent investigations show that people's differential performance when solving reasoning tasks is due to differences not only at computational level, but also at the rational or intentional level. This study is within the framework of this context and it specifically analyses individual differences in hypothetic-deductive reasoning, taking into account the characteristics associated with the task itself (content and instructions) as well as the individuals' differential characteristics. Two hundred and seventy-six students from the University of Santiago de Compostela participated in this study. Several psychometric tests were administered and participants were requested to solve various reasoning tasks. The results obtained confirm that, in effect, the differences between competent and non-competent reasoners are observed at both the above-mentioned levels: cognitive skills and abilities (algorithmic level) and cognitive flexibility (intentional level).
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8
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Hernández AE, Belalcazar LC, Rodríguez MS, Giraldo E. Retention of granular sludge at high hydraulic loading rates in an anaerobic membrane bioreactor with immersed filtration. Water Sci Technol 2002; 45:169-174. [PMID: 12188539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
This study shows the results of an Anaerobic Membrane Bioreactor with immersed filtration cartridges for granular biomass retention working at high hydraulic loading rates. Biomass retention capabilities, granular biomass structure and activity, filtration cartridges flux and organic material degradation performance were evaluated. Four reactors with a volume of 0.005 m3 were tested. Two different filtration cartridges were used (10 and 100 microm) with effective surface area of 0.05 m2. The filtration cartridges were submerged in the reactors for suction type filtration. Three organic loading rates were tested in the first two reactors and seven in the other two. Selective biomass washout and an increment in the biomass methanogenic activity was observed in the reactors at hydraulic loading rates between 1.2 and 4.5 m/h. Analyses of biomass granulometry showed an increase of larger size granular biomass. The immersed membrane anaerobic bioreactor maintain most of the advantages without biomass activity loss.
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Affiliation(s)
- A E Hernández
- CIIA, Department of Civil Engineering, Universidad de los Andes, Carrera, Bogota, Colombia
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Francisco CG, León EI, Martín A, Moreno P, Rodríguez MS, Suárez E. Reductive fragmentation of carbohydrate anomeric alkoxy radicals. Synthesis of alditols with potential utility as chiral synthons. J Org Chem 2001; 66:6967-76. [PMID: 11597215 DOI: 10.1021/jo0156565] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [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: 11/29/2022]
Abstract
A series of anomeric nitrate esters and N-phthalimido glycosides of carbohydrates in furanose and pyranose forms have been synthesized in order to generate the corresponding alkoxy radicals and study the C1-C2 fragmentation reaction under reductive conditions. This reaction constitutes a two-step method for the transformation of carbohydrates into the corresponding alditols with one less carbon. Using this methodology, interesting four- and five-carbon building blocks for natural products synthesis possessing D-erythritol, D-threitol, D-xylitol, and D-arabinitol stereochemistry have been prepared. The synthesis of 1,2-O-isopropylidene-beta-L-threose (40) and 1-acetamido-2,4,5-tri-O-acetyl-D-arabinitol (50) have also been achieved from 1,2:5,6-di-O-isopropylidene-beta-D-glucofuranose and 2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-D-glucopyranose, respectively.
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Affiliation(s)
- C G Francisco
- Instituto de Productos Naturales y Agrobiología del CSIC, Carretera de La Esperanza 3, 38206-La Laguna, Tenerife, Spain
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10
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Fierro JA, Cuchacovic R, Rodríguez MS, Parra MA, Soto MC. [Clinical and anatomopathological study of 5 patients with vasculitis and anti-neutrophil cytoplasmic antibodies with cytoplasmatic pattern]. Rev Med Chil 1995; 123:841-8. [PMID: 8560115] [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: 01/31/2023]
Abstract
We report five patients with vasculitis and antineutrophil cytoplasmic antibodies with cytoplasmatic pattern. All had severe upper and lower respiratory tract necrotizing lesions. Three had kidney failure due to rapidly progressive glomerulonephritis. The pathological study showed a crescentic glomerulonephritis, a chronic granulomatous inflammation in the lungs and in the nasal mucosa, an acute nonspecific inflammation or a chronic granulomatous inflammation and focal blood vessel fibrinoid necrosis. All patients with simultaneous involvement of lungs and kidneys had high titers of antineutrophil cytoplasmic antibodies. The nomenclature and classification of these diseases is discussed.
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Affiliation(s)
- J A Fierro
- Departamento de Medicina, Facultad de Medicina (Campus Occidente, Universidad de Chile, Hospital San Juan de Dios, Santiago de Chile
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11
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Pestoni C, Lareu MV, Rodríguez MS, Muñoz I, Barros F, Carracedo A. The use of the STRs HUMTH01, HUMVWA31/A, HUMF13A1, HUMFES/FPS, HUMLPL in forensic application: validation studies and population data for Galicia (NW Spain). Int J Legal Med 1995; 107:283-90. [PMID: 7577690 DOI: 10.1007/bf01246874] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The 5 tetranucleotide short tandem repeats, HUMTH01, HUMVWA31/A, HUMF13A1, HUMFES/FPS and HUMLPL were studied using different electrophoretic methods and PCR amplification conditions in order to optimize the typing conditions. A genetic population study in the population of Galicia was carried out and the allele and genotype frequencies are given. Compliance with the Hardy-Weinberg equilibrium was tested using different statistical parameters, with clear advantages resulting in favor of using the exact test (Guo-Thompson method) instead of conventional chi-square methods. Some statistical parameters of forensic interest (PD, CE, h) were also calculated. There were no mutations found in a total of 73 paternal meioses and 101 maternal meioses. Abnormal electrophoretic mobility was found in the AT-rich STR HUMF13A1 under non-denaturing conditions and, therefore, the use of denaturing conditions is absolutely necessary. No "stutter" bands were found, although double peaks in the HUMFES/FPS system were observed in some samples. The advantage of using automated sequencers with fluorescent technology is also reported.
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Affiliation(s)
- C Pestoni
- Institute of Legal Medicine, University of Santiago de Compostela, Spain
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12
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Alegría AE, Rodríguez MS, Hernández J. Semiquinones derived from anthraquinone-containing antitumor drugs can partition into phosphatidylcholine bilayers. Biochim Biophys Acta 1990; 1035:51-5. [PMID: 2166575 DOI: 10.1016/0304-4165(90)90172-s] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Semiquinones derived from anthraquinone-containing antitumor drugs (doxorubicin, daunorubicin and 4'-epidoxorubicin) were generated by the hypoxanthine/xanthine oxidase system in argon-saturated phosphate buffer (pH 7.4) in the presence of egg-yolk phosphatidylcholine multilamellar vesicles (MLVs) containing 1 mol% of a doxylstearic acid (DSA) isomer. The destruction of the electron spin resonance signal corresponding to 5-, 12- and 15-DSA included in the MLVs follows pseudo-first-order kinetics. Higher rates of destruction are obtained for the 12-DSA isomer which indicates that these semiquinones can localize preferentially about the depth of the 12th position of stearic acid in membranes. It is demonstrated that DSA destruction is due to a reversible reduction of DSA to the hydroxylamine species. This work shows that anthracycline semiquinones can partition into phosphatidylcholine bilayers under anoxic conditions which may imply another pathway in their cytotoxic action.
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Affiliation(s)
- A E Alegría
- Department of Chemistry, University of Puerto Rico, Humacao 00661
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13
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Milos C, Casanueva V, Campos R, Cid X, Silva V, Rodríguez W, Rodríguez MS. [Risk factors of cardiovascular disease in a Chilean school population: I: Blood lipids in 552 children and adolescents 6-15 years of age]. Rev Chil Pediatr 1990; 61:67-73. [PMID: 2136684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The distribution of serum cholesterol (TC), low density lipoprotein (LDL) cholesterol, high density lipoprotein (HDL)-cholesterol and triglycerides (TG), and the prevalence of risk-considered values were studied in school children from Concepción, Chile (6 to 15 years old; 326 boys, 226 girls). The mean TC levels were 146 mg/dl for boys and 154 mg/dl for girls but 9.1% of the sampled children had TC values between 175 and 190 mg/dl, and 10% were over 190 mg/dl. Mean LDL-C was 83 mg/dl in boys and 89 mg/dl in girls; 6% of samples showed values between 130 and 159 mg/dl, and 1.3% over 160 mg/dl. Mean HDL-C was 46 mg/dl for boys and 48 mg/dl for girls. The mean TG values were 80 mg/dl for boys and 93 mg/dl for girls.
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Affiliation(s)
- C Milos
- Departamento de Bioquímica Aplicada, Facultad de Farmacia, Universidad de Concepción
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14
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Barría MS, Plubins L, Rodríguez MS, Alvo M, Nuñez G, Vega C, Gonzalez H, Faivovich A, Gonzalez F, Domic H. [Enalapril in essential arterial hypertension]. Rev Med Chil 1989; 117:667-70. [PMID: 2562413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The hypotensive effect of enalapril, a converting enzyme inhibitor, given as a single agent once daily, was evaluated prospectively over a 16 week period in 20 subjects. One patient abandoned therapy and 2 were withdrawn (increased creatinine levels in one and the need for associated therapy in the other). Side effects developed in 3 patients: creatinine elevation, skin rush and a "salty taste", respectively. A significant decrease in blood pressure (p less than 0.01) attaining normal levels in 6 out of 17 patients was observed. Normal blood pressure levels were not reached in severe hypertension; the association of hydrochlorothyazide was effective in 5 of 11 such subjects. Thus, enalapril may be safely used as a first stage single therapy in mild or moderate hypertension.
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15
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Bancalari A, Herrera A, Rodríguez MS, Pandolfi E, Cantín A. [Correlation of clinical, radiologic and pathologic aspects of the thymus in newborn infants]. Rev Chil Pediatr 1989; 60:135-42. [PMID: 2485499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The thymus of 30 autopsied neonates who died from different causes (hyaline membrane disease: 13 cases; severe infections: 11 cases; congenital malformations: 4 cases; severe asphyxia: 2 cases) were prospectively examined in order to look for the most frequent macroscopic and microscopic morphological changes in this organ. Findings were correlated with clinical and radiological data. In hyaline membrane disease patients moderate decrease of thymic weight and slight depletion of cortical lymphocytes as to reference values were observed; such changes were likewise seen in cases with malformations and severe asphyxia. Newborns who died from severe infections exhibited early and pronounced decrease of thymic weight as well as severe depletion of cortical lymphocytes, more noticeable at all times than in the remaining groups. It is concluded that the predominant finding in examined patients is thymic involution secondary to stress, whose intensity would depend upon the type and duration of the main disease, being most severe the longer the evolutionary time. The variability observed in thymic size of individuals with similar physical features and the lack of an accurate correlation between radiology and post mortem findings with respect to thymic size are remarkable.
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Rodríguez MS, Rodríguez JR, Balesterena AS, Jiménez ME. [Correction of facial disharmony using mandibular bone grafts]. Rev Cubana Estomatol 1989; 26:113-8. [PMID: 2639460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The case of a patient affected by maxillary retrognathism associated with mandibular prognathism, is described. The patient was operated in our service after being studied in the multidisciplinary clinics. It is determined to use a mandibular bone graft in order to make use of the same surgical area, avoiding, in that way, maxillary retrodisplacement and additional aggressions to the patients, which should be caused by the act of taking a fragment of the crest of the iliac bone. The patient presents a wholly favorable evolution.
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Rodríguez MS, Bancalari A, Pandolfi E. [Mechanical ventilation in a neonatology unit]. Rev Chil Pediatr 1986; 57:350-4. [PMID: 3589043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Rodríguez W, Caffarena E, Bidegaín MA, Figueroa S, Rodríguez MS, Pugh A. [Renal tuberculosis in pediatrics]. Rev Chil Pediatr 1986; 57:244-8. [PMID: 3589029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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19
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González B, Elgueta S, Talesnik E, Montaña N, Rodríguez MS, Valenzuela M, Miranda M, Varas M. [Lupus erythematosus disseminatus in childhood. Clinical study and survival in 31 cases]. Rev Chil Pediatr 1984; 55:238-44. [PMID: 6084265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Rodríguez W, Delucchi C, Bidegain MA, Rodríguez MS, Gleisner A, Figueroa S. [Treatment of urinary tract infections in children with trimethoprim-sulfamethoxypyridazine]. Rev Chil Pediatr 1983; 54:402-6. [PMID: 6379766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Rodríguez MS, Santiago Delpín EA. [Does ischemia increases the antigenicity of an organ?]. Bol Asoc Med P R 1980; 72:62-3. [PMID: 6992795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Villasante JG, Rabago González P, Pérez Picouto F, Pérez Saldaña MR, Torres Sardina MP, Canto S, Cassinello P, Puigdollers M, Rodríguez MS, Sánchez Palomo P, Zumalacarregui MJ. [Personal experience on the biochemical diagnosis of myocardial infarct]. Rev Clin Esp 1979; 155:339-45. [PMID: 545478] [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: 12/23/2022]
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Larrieu AJ, Rodríguez MS, Santiago Delpín EA. Results of the nitroblue tetrazolium test in experimental immunosuppression. Surg Gynecol Obstet 1974; 139:185-8. [PMID: 4601872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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