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Martinez-Lopez J, Sanchez-Vega B, Barrio S, Cuenca I, Ruiz-Heredia Y, Alonso R, Rapado I, Marin C, Cedena MT, Paiva B, Puig N, Mateos MV, Ayala R, Hernández MT, Jimenez C, Rosiñol L, Martínez R, Teruel AI, Gutiérrez N, Martin-Ramos ML, Oriol A, Bargay J, Bladé J, San-Miguel J, Garcia-Sanz R, Lahuerta JJ. Analytical and clinical validation of a novel in-house deep-sequencing method for minimal residual disease monitoring in a phase II trial for multiple myeloma. Leukemia 2017; 31:1446-1449. [PMID: 28210002 PMCID: PMC5467041 DOI: 10.1038/leu.2017.58] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- J Martinez-Lopez
- Department of Hematology, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - B Sanchez-Vega
- Department of Hematology, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - S Barrio
- Department of Hematology, University Hospital Würzburg, Wurzburg, Germany
| | - I Cuenca
- Department of Hematology, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Y Ruiz-Heredia
- Department of Hematology, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - R Alonso
- Department of Hematology, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - I Rapado
- Department of Hematology, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - C Marin
- Department of Hematology, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - M-T Cedena
- Department of Hematology, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - B Paiva
- Department of Hematology, Clinica Universidad de Navarra, Centro de Investigación Médica Aplicada (CIMA), IDISNA, Pamplona, Spain
| | - N Puig
- Department of Hematology, Hospital Universitario, Salamanca, Spain
| | - M-V Mateos
- Department of Hematology, Hospital Universitario, Salamanca, Spain
| | - R Ayala
- Department of Hematology, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - M-T Hernández
- Department of Hematology, Hospital Universitario de Canarias, Santa Cruz de Tenerife, Spain
| | - C Jimenez
- Department of Hematology, Hospital Universitario, Salamanca, Spain
| | - L Rosiñol
- Department of Hematology, Hospital Clinic, Barcelona, Spain
| | - R Martínez
- Department of Hematology, Hospital Clinico San Carlos, Madrid, Spain
| | - A-I Teruel
- Department of Hematology, Hospital Clinico Universitario de Valencia, Valencia, Spain
| | - N Gutiérrez
- Department of Hematology, Hospital Universitario, Salamanca, Spain
| | - M-L Martin-Ramos
- Department of Hematology, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - A Oriol
- Department of Hematology, Hospital Germans Trias I Pujol, Badalona, Spain
| | - J Bargay
- Department of Hematology, Hospital Sont Llatzer,Palma de Mallorca, Spain
| | - J Bladé
- Department of Hematology, Hospital Clinic, Barcelona, Spain
| | - J San-Miguel
- Department of Hematology, Clinica Universidad de Navarra, Centro de Investigación Médica Aplicada (CIMA), IDISNA, Pamplona, Spain
| | - R Garcia-Sanz
- Department of Hematology, Hospital Universitario, Salamanca, Spain
| | - J-J Lahuerta
- Department of Hematology, Hospital Universitario 12 de Octubre, Madrid, Spain
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Bonanad S, De la Rubia J, Gironella M, Pérez Persona E, González B, Fernández Lago C, Arnan M, Zudaire M, Hernández Rivas JA, Soler A, Marrero C, Olivier C, Altés A, Valcárcel D, Hernández MT, Oiartzabal I, Fernández Ordoño R, Arnao M, Esquerra A, Sarrá J, González-Barca E, González J, Calvo X, Nomdedeu M, García Guiñón A, Ramírez Payer A, Casado A, López S, Durán M, Marcos M, Cruz-Jentoft AJ. Development and psychometric validation of a brief comprehensive health status assessment scale in older patients with hematological malignancies: The GAH Scale. J Geriatr Oncol 2015; 6:353-61. [PMID: 26139300 DOI: 10.1016/j.jgo.2015.03.003] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Revised: 03/24/2015] [Accepted: 03/31/2015] [Indexed: 12/27/2022]
Abstract
OBJECTIVES The purpose of this study was to develop a new brief, comprehensive geriatric assessment scale for older patients diagnosed with different hematological malignancies, the Geriatric Assessment in Hematology (GAH scale), and to determine its psychometric properties. MATERIALS AND METHODS The 30-item GAH scale was designed through a multi-step process to cover 8 relevant dimensions. This is an observational study conducted in 363 patients aged≥65years, newly diagnosed with different hematological malignancies (myelodysplasic syndrome/acute myeloblastic leukemia, multiple myeloma, or chronic lymphocytic leukemia), and treatment-naïve. The scale psychometric validation process included the analyses of feasibility, floor and ceiling effect, validity and reliability criteria. RESULTS Mean time taken to complete the GAH scale was 11.9±4.7min that improved through a learning-curve effect. Almost 90% of patients completed all items, and no floor or ceiling effects were identified. Criterion validity was supported by reasonable correlations between the GAH scale dimensions and three contrast variables (global health visual analogue scale, ECOG and Karnofsky), except for comorbidities. Factor analysis (supported by the scree plot) revealed nine factors that explained almost 60% of the total variance. Moderate internal consistency reliability was found (Cronbach's α: 0.610), and test-retest was excellent (ICC coefficients, 0.695-0.928). CONCLUSION Our study suggests that the GAH scale is a valid, internally reliable and a consistent tool to assess health status in older patients with different hematological malignancies. Future large studies should confirm whether the GAH scale may be a tool to improve clinical decision-making in older patients with hematological malignancies.
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Affiliation(s)
- S Bonanad
- Hematology Department, H. U. La Fe, Av. Fernando Abril Martorell, 106, 46026 Valencia, Spain.
| | - J De la Rubia
- Hematology Department, H. U. La Fe, Av. Fernando Abril Martorell, 106, 46026 Valencia, Spain
| | - M Gironella
- Hematology Department, H. U. Vall d'Hebrón, Passeig de la Vall d'Hebron, 119-129, 08035 Barcelona, Spain
| | - E Pérez Persona
- Hematology Department, H. U. Txagorritxu, c/ Jose Atxotegi, s/n, 01009 Vitoria-Gasteiz, Álava, Spain
| | - B González
- Hematology Department, H. U. de Canarias, Ctra. Ofra, s/n, 38320 San Cristóbal de La Laguna, Santa Cruz de Tenerife, Spain
| | - C Fernández Lago
- Hematology Department, C.H.U. A Coruña, As Xubias, 84, 15006, A Coruña, Spain
| | - M Arnan
- Hematology Department, Catalan Institute of Oncology, IDIBELL, Hospital Duran i Reynals, Avinguda Granvia de l'Hospitalet, 199-203 08908 l'Hospitalet de Llobregat, Barcelona, Spain
| | - M Zudaire
- Hematology Department, C.H. de Navarra, Av. Pío XII, 36, 31008 Pamplona, Navarra, Spain
| | - J A Hernández Rivas
- Hematology Department, H.U. Infanta Leonor, Avenida Gran Vía del Este, 80, 28031 Madrid, Spain
| | - A Soler
- Hematology Department, C.S. Parc Taulí, Parc Taulí, 1, 08208 Sabadell, Barcelona, Spain
| | - C Marrero
- Hematology Department, H. Ntra. Sra. de La Candelaria, Carretera del Rosario, 145, 38010 Santa Cruz de Tenerife, Spain
| | - C Olivier
- Hematology Department, C.H. de Segovia, c/ de Miguel Servet, s/n, Segovia, Spain
| | - A Altés
- Hematology Department, H. Sant Joan de Déu, Passeig de Sant Joan de Déu, 2, 08950 Esplugues de Llobregat, Barcelona, Spain
| | - D Valcárcel
- Hematology Department, H. U. Vall d'Hebrón, Passeig de la Vall d'Hebron, 119-129, 08035 Barcelona, Spain
| | - M T Hernández
- Hematology Department, H. U. de Canarias, Ctra. Ofra, s/n, 38320 San Cristóbal de La Laguna, Santa Cruz de Tenerife, Spain
| | - I Oiartzabal
- Hematology Department, H. U. Txagorritxu, c/ Jose Atxotegi, s/n, 01009 Vitoria-Gasteiz, Álava, Spain
| | - R Fernández Ordoño
- Hematology Department, H.U. Infanta Leonor, Avenida Gran Vía del Este, 80, 28031 Madrid, Spain
| | - M Arnao
- Hematology Department, H.U. de La Ribera, Carretera Corbera, km 1, 46600 Alzira, Valencia, Spain
| | - A Esquerra
- Hematology Department, C.S. Parc Taulí, Parc Taulí, 1, 08208 Sabadell, Barcelona, Spain
| | - J Sarrá
- Hematology Department, Catalan Institute of Oncology, IDIBELL, Hospital Duran i Reynals, Avinguda Granvia de l'Hospitalet, 199-203 08908 l'Hospitalet de Llobregat, Barcelona, Spain
| | - E González-Barca
- Hematology Department, Catalan Institute of Oncology, IDIBELL, Hospital Duran i Reynals, Avinguda Granvia de l'Hospitalet, 199-203 08908 l'Hospitalet de Llobregat, Barcelona, Spain
| | - J González
- Hematology Department, H.U. Virgen del Rocío, Avenida Manuel Siurot, s/n, 41013 Sevilla, Spain
| | - X Calvo
- Hematology Department, Hospital Clínic de Barcelona, Carrer Villarroel, 170, 08036 Barcelona, Spain
| | - M Nomdedeu
- Hematology Department, Hospital Clínic de Barcelona, Carrer Villarroel, 170, 08036 Barcelona, Spain
| | - A García Guiñón
- Hematology Department, H.U. Arnau de Vilanova, Avenida Alcalde Rovira Roure, 80, 25198 Lleida, Spain
| | - A Ramírez Payer
- Hematology Department, H.U. Central de Asturias, Calle Carretera de Rubín, s/n, 33011 Oviedo, Spain
| | - A Casado
- U. Autónoma de Madrid, Dynamic Science S.L., c/Azcona, 31, 28028 Madrid, Spain
| | - S López
- Celgene S.L.U., Paseo de Recoletos, 37, 28004 Madrid, Spain
| | - M Durán
- Celgene S.L.U., Paseo de Recoletos, 37, 28004 Madrid, Spain
| | - M Marcos
- Celgene S.L.U., Paseo de Recoletos, 37, 28004 Madrid, Spain
| | - A J Cruz-Jentoft
- Geriatric Department, H.U. Ramón y Cajal, Ctra. de Colmenar Viejo, km. 9,100, 28034 Madrid, Spain
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Paíno T, Paiva B, Sayagués JM, Mota I, Carvalheiro T, Corchete LA, Aires-Mejía I, Pérez JJ, Sanchez ML, Barcena P, Ocio EM, San-Segundo L, Sarasquete ME, García-Sanz R, Vidriales MB, Oriol A, Hernández MT, Echeveste MA, Paiva A, Blade J, Lahuerta JJ, Orfao A, Mateos MV, Gutiérrez NC, San-Miguel JF. Phenotypic identification of subclones in multiple myeloma with different chemoresistant, cytogenetic and clonogenic potential. Leukemia 2014; 29:1186-94. [DOI: 10.1038/leu.2014.321] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 10/31/2014] [Accepted: 11/04/2014] [Indexed: 01/06/2023]
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Menéndez E, Álvaro AM, Hernández MT, Parra JL. New methodology for assessing the environmental burden of cement mortars with partial replacement of coal bottom ash and fly ash. J Environ Manage 2014; 133:275-283. [PMID: 24412590 DOI: 10.1016/j.jenvman.2013.12.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 10/18/2013] [Accepted: 12/01/2013] [Indexed: 06/03/2023]
Abstract
This paper assess the mechanical an environmental behaviour of cement mortars manufactured with addition of fly ash (FA) and bottom ash (BA), as partial cement replacement (10%, 25% and 35%). The environmental behaviour was studied by leaching tests, which were performed under several temperature (23 °C and 60 °C) and pH (5 and 10) conditions, and ages (1, 2, 4 and 7 days). Then, the accumulated amount of the different constituents leached was analysed. In order to obtain an environmental burden (EB) value of each cement mixture, a new methodology was developed. The EB value obtained is related to the amount leached and the hazardous level of each constituent. Finally, the integral study of compressive strength and EB values of cement mixtures allowed their classification. The results showed that mortars manufactured with ordinary Portland cement (OPC) and with coal BA had similar or even better environmental and mechanical behaviour than mortars with FA. Therefore, the partial replacement of cement by BA might be as suitable or even better as the replacement by FA.
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Affiliation(s)
- E Menéndez
- Eduardo Torroja Institute of Construction Science (IETcc-CSIC), Spain.
| | - A M Álvaro
- Eduardo Torroja Institute of Construction Science (IETcc-CSIC), Spain; ETSIT - Polytechnic University of Madrid (UPM), Spain
| | - M T Hernández
- EUITI - Polytechnic University of Madrid (UPM), Spain
| | - J L Parra
- ETSIM - Polytechnic University of Madrid (UPM), Spain
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Goberna M, García C, Insam H, Hernández MT, Verdú M. Burning fire-prone Mediterranean shrublands: immediate changes in soil microbial community structure and ecosystem functions. Microb Ecol 2012; 64:242-255. [PMID: 22202889 DOI: 10.1007/s00248-011-9995-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2011] [Accepted: 12/03/2011] [Indexed: 05/31/2023]
Abstract
Wildfires subject soil microbes to extreme temperatures and modify their physical and chemical habitat. This might immediately alter their community structure and ecosystem functions. We burned a fire-prone shrubland under controlled conditions to investigate (1) the fire-induced changes in the community structure of soil archaea, bacteria and fungi by analysing 16S or 18S rRNA gene amplicons separated through denaturing gradient gel electrophoresis; (2) the physical and chemical variables determining the immediate shifts in the microbial community structure; and (3) the microbial drivers of the change in ecosystem functions related to biogeochemical cycling. Prokaryotes and eukaryotes were structured by the local environment in pre-fire soils. Fire caused a significant shift in the microbial community structure, biomass C, respiration and soil hydrolases. One-day changes in bacterial and fungal community structure correlated to the rise in total organic C and NO(3)(-)-N caused by the combustion of plant residues. In the following week, bacterial communities shifted further forced by desiccation and increasing concentrations of macronutrients. Shifts in archaeal community structure were unrelated to any of the 18 environmental variables measured. Fire-induced changes in the community structure of bacteria, rather than archaea or fungi, were correlated to the enhanced microbial biomass, CO(2) production and hydrolysis of C and P organics. This is the first report on the combined effects of fire on the three biological domains in soils. We concluded that immediately after fire the biogeochemical cycling in Mediterranean shrublands becomes less conservative through the increased microbial biomass, activity and changes in the bacterial community structure.
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Affiliation(s)
- M Goberna
- Institut für Mikrobiologie, Universität Innsbruck, Innsbruck, Austria.
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Paiva B, Pérez-Andrés M, Vídriales MB, Almeida J, de las Heras N, Mateos MV, López-Corral L, Gutiérrez NC, Blanco J, Oriol A, Hernández MT, de Arriba F, de Coca AG, Terol MJ, de la Rubia J, González Y, Martín A, Sureda A, Schmidt-Hieber M, Schmitz A, Johnsen HE, Lahuerta JJ, Bladé J, San-Miguel JF, Orfao A. Competition between clonal plasma cells and normal cells for potentially overlapping bone marrow niches is associated with a progressively altered cellular distribution in MGUS vs myeloma. Leukemia 2011; 25:697-706. [PMID: 21252988 DOI: 10.1038/leu.2010.320] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Disappearance of normal bone marrow (BM) plasma cells (PC) predicts malignant transformation of monoclonal gammopathy of undetermined significance (MGUS) and smoldering myeloma (SMM) into symptomatic multiple myeloma (MM). The homing, behavior and survival of normal PC, but also CD34(+) hematopoietic stem cells (HSC), B-cell precursors, and clonal PC largely depends on their interaction with stromal cell-derived factor-1 (SDF-1) expressing, potentially overlapping BM stromal cell niches. Here, we investigate the distribution, phenotypic characteristics and competitive migration capacity of these cell populations in patients with MGUS, SMM and MM vs healthy adults (HA) aged >60 years. Our results show that BM and peripheral blood (PB) clonal PC progressively increase from MGUS to MM, the latter showing a slightly more immature immunophenotype. Of note, such increased number of clonal PC is associated with progressive depletion of normal PC, B-cell precursors and CD34(+) HSC in the BM, also with a parallel increase in PB. In an ex vivo model, normal PC, B-cell precursors and CD34(+) HSC from MGUS and SMM, but not MM patients, were able to abrogate the migration of clonal PC into serial concentrations of SDF-1. Overall, our results show that progressive competition and replacement of normal BM cells by clonal PC is associated with more advanced disease in patients with MGUS, SMM and MM.
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Affiliation(s)
- B Paiva
- Servicio de Hematología, Hospital Universitario de Salamanca, Salamanca, Spain
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Guerrero AL, Bueno V, Hernández MT, Martín-Serradilla JI, Carrasco E, Cuadrado I. [Apolipoprotein E polymorphism as a predictor of progression of multiple sclerosis]. Neurologia 2003; 18:146-8. [PMID: 12677480] [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: 03/01/2023] Open
Abstract
INTRODUCTION During recent years, different studies have proposed that apolipoprotein E e4 can be a predictor of progression in multiple sclerosis. We aim to evaluate these findings in our country. PATIENTS AND METHODS We studied 42 patients with relapsing remitting or secondary progressive multiple sclerosis, and a disease duration of at least 2 years. We correlated the presence or absence of e4 allele with markers of progression such as age of onset and diagnosis, disease duration, number of relapses, EDSS at 1, 2, 5 and 10 years, progression index and relapse rate. RESULTS None of the parameters evaluated significantly correlate with e4 allele of the APOE. CONCLUSIONS In spite of the limitation due to the small number of patients studied, we cannot confirm that APOE e4 allele is a predictor of progression of disability in multiple sclerosis.
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Affiliation(s)
- A L Guerrero
- Unidad de Neurología, Hospital Río Carrión, Palencia, Spain.
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Castellano I, Hernández MT, Gómez-Martino JR, Covarsí A. [Membranous nephropathy with ankylosing spondylitis ]. Nefrologia 2003; 22:584-6. [PMID: 12516294] [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: 02/28/2023] Open
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Castellano I, Gómez-Martino JR, Hernández MT, Novillo R, Covarsí A. [Remission of nephrotic syndrome caused by renal amyloidosis secondary to pulmonary tuberculosis after tuberculostatic treatment]. Nefrologia 2001; 21:88-91. [PMID: 11344968] [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: 02/20/2023] Open
Abstract
Secondary systemic amyloidosis is a frequent complication in several chronic infectious and inflammatory states. Although initially amyloidosis was described in association with long-standing syphilis and tuberculosis, with the introduction of antiboitic and antituberculous therapy, rheumatoid arthritis is now the commonest cause of this illness. We present here the case of a 16 year-old woman, who was diagnosed one month ealier with pulmonary tuberculosis. She developed a nephrotic syndrome and her kidney biopsy confirmed the presence of amyloid. Treatment of the tuberculosis was accompanied by clinical remission of the nephrotic syndrome two years later.
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Affiliation(s)
- I Castellano
- Sección de Nefrología, Hospital San Pedro de Alcántara, Cáceres
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Abstract
Acute renal failure due to diffuse renal infiltration is rarely the presenting manifestation of non-Hodgkin's lymphoma. We report a patient with acute renal failure secondary to diffuse bilateral renal infiltration by a Burkitt's lymphoma. The presence of bilateral renal enlargement, an elevated serum lactate dehydrogenase (LDH), and lymphopenia should suggest the diagnosis, which can be confirmed by renal biopsy.
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Affiliation(s)
- I Castellano
- Division of Nephrology, the Department of Internal Medicine, the Hospital San Pedro de Alcántara, Cáceres, Spain.
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Abstract
OBJECTIVES To have a group of COPD patients undergo a simple program of home-based exercise training, using the shuttle walking test (SWT) to standardize the intensity of training. METHODS Sixty patients participated, randomly distributed into two groups (rehabilitation and control) of 30 patients each. The following evaluations were carried out at baseline and at 12 weeks: (1) pulmonary function studies; (2) SWT; (3) submaximal intensity resistance test; (4) cycle ergometer test; (5) quality of life; and (6) dyspnea. The rehabilitation group underwent a lower-extremity training program. Walking was selected as the type of exercise. The intensity of training was set at 70% of the maximum speed attained on the SWT. Divided sessions were held, lasting 1 h, 6 days/wk, at home, with a checkup every 2 weeks. The duration of the program was 12 weeks. RESULTS The following patients completed the study: 20 patients (66.6%) from the rehabilitation group (mean [+/- SD]) age, 64.3 +/- 8.3 years; mean FEV(1), 41.7 +/- 15.6% of predicted); and 17 patients (56.6%) from the control group (mean age, 63.1 +/- 6.9 years; mean FEV(1), 40 +/- 16.4% of predicted). We found no changes in pulmonary function or effort parameters (SWT or cycle ergometer) in the rehabilitation group at 12 weeks. A twofold increase (1,274 +/- 980 to 2,651 +/- 2,056 m; p < 0.001) was achieved in the submaximal intensity resistance test, with less dyspnea at the conclusion of the test (p = 0.05). Significant improvement also was achieved in basal dyspnea and, both statistically and clinically, in the quality of life. Significant changes were not achieved in the control group patients. CONCLUSIONS A simple home-based program of exercise training achieved improvement in exercise tolerance, posteffort dyspnea, basal dyspnea, and quality of life in COPD patients.
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Affiliation(s)
- M T Hernández
- Pneumology Department, Virgen del Rocío University Hospital, Seville, Spain.
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Canales J, Pinto RM, Costas MJ, Hernández MT, Miró A, Bernet D, Fernández A, Cameselle JC. Rat liver nucleoside diphosphosugar or diphosphoalcohol pyrophosphatases different from nucleotide pyrophosphatase or phosphodiesterase I: substrate specificities of Mg(2+)-and/or Mn(2+)-dependent hydrolases acting on ADP-ribose. Biochim Biophys Acta 1995; 1246:167-77. [PMID: 7819284 DOI: 10.1016/0167-4838(94)00191-i] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Three rat liver nucleotides(5') diphosphosugar (NDP-sugar) or nucleoside(5') diphosphoalcohol pyrophosphatases are described: two were previously identified in experiments measuring Mg(2+)-dependent ADP-ribose pyrophosphatase activity (Miró et al. (1989) FEBS Lett. 244, 123-126), and the other is a new, Mn(2+)-dependent ADP-ribose pyrophosphatase. They are resolved by ion-exchange chromatography, and differ by their substrate and cation specificities, KM values for ADP-ribose, pH-activity profiles, molecular weights and isoelectric points. The enzymes were tested for activity towards: reducing (ADP-ribose, IDP-ribose) and non-reducing NDP-sugars (ADP-glucose, ADP-mannose, GDP-mannose, UDP-mannose, UDP-glucose, UDP-xylose, CDP-glucose), CDP-alcohols (CDP-glycerol, CDP-ethanolamine, CDP-choline), dinucleotides (diadenosine pyrophosphate, NADH, NAD+, FAD), nucleoside(5') mono- and diphosphates (AMP, CMP, GMP, ADP, CDP) and dTMP p-nitrophenyl ester. Since the enzymes have not been purified to homogeneity, more than three pyrophosphatases may be present, but the co-purification of activities, thermal co-inactivation, and inhibition experiments give support to: (i) and ADP-ribose pyrophosphatase highly specific for ADP(IDP)-ribose in the presence of Mg2+, but active also on non-reducing ADP-hexoses and dinucleotides (not on NAD+) when Mg2+ was replaced with Mn2+; (ii) a Mn(2+)-dependent pyrophosphatase active on ADP(IDP)-ribose, dinucleotides and CDP-alcohols; (iii) a rather unspecific pyrophosphatase that, with Mg2+, was active on AMP(IMP)-containing NDP-sugars and dinucleotides (not on NAD+), and with Mn2+, was also active on non-adenine NDP-sugars and CDP-alcohols. The enzymes differ from nucleotide pyrophosphatase/phosphodiesterase-I (NPPase/PDEaseI) by their substrate specificities and by their cytosolic location and solubility in the absence of detergents. Although NPPase/PDEaseI is much more active in rat liver, its known location in the non-cytoplasmic sides of plasma and endoplasmic reticulum membranes, together with the known cytoplasmic synthesis of NDP-sugars and CDP-alcohols, permit the speculation that the pyrophosphatases studied in this work may have a cellular role.
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Affiliation(s)
- J Canales
- Departmento de Bioquímica y Biología Molecular y Genética, Facultad de Medicina, Universidad de Extremadura, Badajoz, Spain
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Abstract
The intraphagocytic killing of Staphylococcus aureus, Streptococcus pyogenes, and Corynebacterium group D2 by ciprofloxacin (0.1, 1 and 5 mg/L) within human neutrophils was determined. The organisms showed different susceptibility to neutrophil killing mechanisms. The neutrophils with intact and impaired (by phenylbutazone treatment) O2-dependent killing mechanisms were studied. The minimum concentrations of ciprofloxacin to kill 90% of phagocytosed bacteria within untreated neutrophils after 2 h were 1 mg/L for S. aureus and Corynebacterium group D2, and 0.1 mg/L for S. pyogenes. In contrast, exposure for 3 h was required to achieve similar cidal effects within phenylbutazone treated neutrophils. Synergic interaction between ciprofloxacin and the O2-dependent mechanisms of phagocytes was found. The reactive oxygen metabolites produced in the respiratory burst did not affect the intraphagocytic activity of ciprofloxacin. Phenylbutazone treatment of phagocytes would be a good experimental model to study intraphagocytic killing by drugs in situations where the oxidative mechanisms of neutrophils are impaired (for example AIDS and chronic granulomatous disease).
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Affiliation(s)
- J Pemán
- Servicio de Microbiologia, Hospital Universitario La Fe, Valencia, Spain
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14
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Miró A, Hernández MT, Costas MJ, Cameselle JC. Enzyme saturation and inhibition kinetics studied from multiple progress curves recorded spectrophotometrically from single reaction mixtures for ADP-ribose pyrophosphatase. J Biochem Biophys Methods 1991; 22:177-84. [PMID: 1648114 DOI: 10.1016/0165-022x(91)90031-q] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Saturation and inhibition kinetics data for rat liver ADP-ribose pyrophosphatase (EC 3.6.1.13) were obtained from progress curves initiated by the addition of substrate and recorded spectrophotometrically until the end point was reached. The hydrolysis of ADP-ribose was coupled to either alkaline phosphatase and adenosine deaminase or AMP deaminase. The validity of the approach was shown because: (i) the coupled hydrolysis of ADP-ribose was essentially irreversible; (ii) ADP-ribose pyrophosphate was stable at 37 degrees C in the conditions needed for the assay; and (iii) accumulated reaction products did not inhibit detectably in the conditions of the assay. In addition, several identical progress curves could be successively recorded by repetition of the addition of substrate. In that way it was possible to carry out complete inhibition studies by increasing the inhibitor concentration between successive substrate additions. Studying the inhibition by high D-ribose concentrations, meaningful results could be obtained at four different inhibitor concentrations in a single reaction mixture, which represented a great saving of enzyme preparation with respect to what would be needed in an equivalent initial rate study.
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Affiliation(s)
- A Miró
- Departamento de Bioquímica y Biología Molecular y Genética, Facultad de Medicina, Universidad de Extremadura, Badajoz, Spain
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15
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Corrales JJ, Tabernero JM, Miralles JM, Hernández MT. Effects of subclinical hyperthyroidism on renal handling of water and electrolytes in patients with nodular goiter. Klin Wochenschr 1991; 69:19-24. [PMID: 2016844 DOI: 10.1007/bf01649051] [Citation(s) in RCA: 2] [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: 12/29/2022]
Abstract
Evidence is beginning to accumulate that minor degrees of hyperthyroidism lead to adverse effects in various tissues, even though clinically the patients are euthyroid. To determine whether these anomalies in thyroid function have deleterious effects on renal function and electrolyte metabolism, the plasma concentrations of electrolytes, urea, and creatinine, the renal handling of water and sodium, and the urinary excretion of these substances were measured in patients with nodular goiter who were displaying stable subclinical hyperthyroidism. The studies were carried out before and after correcting the thyroid dysfunction. Restoration of euthyroidism did not modify any of the renal function parameters studied and did not cause changes in blood analyte levels. The data show that treatment of minor degrees of hyperthyroidism does not have any effects on renal function and electrolyte metabolism, and confirm the well-known capacity of the kidney to adjust its functions to changes induced by an abnormal secretion of thyroid hormones.
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Affiliation(s)
- J J Corrales
- Departamento de Medicina, Unidades de Endocrinologia y Nefrologia, Universidad de Salamanca, Spain
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16
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Abstract
Two rat liver ADP-ribose pyrophosphatases (ADPRibases) were partially purified. ADPRibase-I hydrolyzed ADP-ribose (Km = 0.5 microM) giving AMP as a product, required Mg2+ or, less efficiently, Mn2+ (Ca2+ was not active), its activity changed little between pH 7 and 9, and was specific for ADP-ribose as it did not hydrolyze ADP-glucose, NAD+, NADH or diadenosine 5',5"'-P1,Pn-n-phosphates (Ap2A, Ap3A). ADPRibase-II showed similar properties, except that the Km for ADP-ribose was 50 microM and may be non-specific, as the same preparation hydrolyzed ADP-glucose, NADH and Ap2A. ADPRibase-I fulfills the requirements of a specific turnover pathway consistent with a cellular role for free ADP-ribose.
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Affiliation(s)
- A Miró
- Departamento de Bioquímica y Biología Molecular y Genética, Facultad de Medicina, Universidad de Extremadura, Badajoz, Spain
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17
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