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Alonso B, Bouts T, Gasthuys F, Schauvliege S. Anesthesie van vijf amurtijgers (Panthera tigris altaica) met een combinatie van medetomidine en ketamine. VLAAMS DIERGEN TIJDS 2022. [DOI: 10.21825/vdt.85301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Vijf gezonde, mannelijke, in gevangenschap levende amurtijgers werden met een verdovingsgeweer onder anesthesie gebracht met medetomidine (0,03 mg/kg) en ketamine (2,5 mg/kg) gedoseerd op geschat lichaamsgewicht. De gemiddelde tijd tot decubitus was 5 ± 1 minuten en tot benaderen 13 ± 2,4 minuten. De tijd tussen het benaderen en het einde van de procedure was 16,2 ± 3,3 minuten en de tijd tussen de injectie van de anesthetica en de antagonist bedroeg 32,8 ± 4 minuten. Respectievelijk 9,4 ± 4,6 minuten en 23 ± 11,4 minuten na de injectie van atipamezole (0,08 mg/kg IV) lagen de dieren terug sternaal en stonden ze op. Medetomidine en ketamine gecombineerd in één pijltje resulteerden in een snelle en veilige immobilisatie van de gezonde tijgers. Partiële antagonisatie met 15 mg atipamezole IV resulteerde in een korte recoveryduur zonder duidelijke nevenwerkingen.
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Barbero M, San Antonio B, Alonso L, Molnar V, Alonso B, Rubio G, Abdallah N. ERAS program effects on opioid sparing and functional recovery. Clin Nutr ESPEN 2022. [DOI: 10.1016/j.clnesp.2022.06.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Salgado-Remacha FJ, Alonso B, Crespo H, Cojocaru C, Trull J, Romero R, López-Ripa M, Guerreiro PT, Silva F, Miranda M, L'Huillier A, Arnold CL, Sola ÍJ. Single-shot d-scan technique for ultrashort laser pulse characterization using transverse second-harmonic generation in random nonlinear crystals. Opt Lett 2020; 45:3925-3928. [PMID: 32667320 DOI: 10.1364/ol.397033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 06/12/2020] [Indexed: 06/11/2023]
Abstract
We demonstrate a novel dispersion-scan (d-scan) scheme for single-shot temporal characterization of ultrashort laser pulses. The novelty of this method relies on the use of a highly dispersive crystal featuring antiparallel nonlinear domains with a random distribution and size. This crystal, capable of generating a transverse second-harmonic signal, acts simultaneously as the dispersive element and the nonlinear medium of the d-scan device. The resulting in-line architecture makes the technique very simple and robust, allowing the acquisition of single-shot d-scan traces in real time. The retrieved pulses are in very good agreement with independent frequency-resolved optical grating measurements. We also apply the new single-shot d-scan to a terawatt-class laser equipped with a programmable pulse shaper, obtaining an excellent agreement between the applied and the d-scan retrieved dispersions.
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Alonso B, Pérez-Granda MJ, Rodríguez-Huerta A, Rodríguez C, Bouza E, Guembe M. The optimal ethanol lock therapy regimen for treatment of biofilm-associated catheter infections: an in-vitro study. J Hosp Infect 2018; 100:e187-e195. [PMID: 29653134 DOI: 10.1016/j.jhin.2018.04.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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: 01/23/2018] [Accepted: 04/04/2018] [Indexed: 01/01/2023]
Abstract
BACKGROUND Ethanol-based lock therapy (LT) solutions are used as an alternative to antibiotics for the conservative management of catheter-related bloodstream infection. However, no clear consensus on regimen or dose has been reached. AIM To find the ethanol-based lock solution containing a sufficiently low concentration of ethanol for reduction of the metabolic activity of bacterial and fungal biofilms. METHODS Using an in-vitro model, three concentrations of ethanol (25%, 40%, 70%) were tested, with and without 60 IU of heparin, at six different time-points and against 24 h preformed biofilms of Staphylococcus aureus ATCC29213, Staphylococcus epidermidis (clinical isolate), Enterococcus faecalis ATCC33186, Candida albicans ATCC14058, and Escherichia coli ATCC25922. The reduction in the metabolic activity of the biofilm was measured using the tetrazolium salt assay and LT was considered to be successful when metabolic activity fell by >90%. Regrowth inhibition was then tested within 24 h and seven days after each LT regimen only at the ethanol concentration of the most successful LT regimen. FINDINGS The most successful LT was achieved with 40% ethanol + 60 IU of heparin only at 24, 72, and 24 h for seven-day regimens (P < 0.05). However, none of the regimens reached 45% RI within seven days of therapy. CONCLUSION According to our in-vitro data, an ethanol-based lock solution with 40% ethanol + 60 IU heparin administered daily for 72 h is sufficient to almost eradicate the metabolic activity of bacterial and fungal biofilms. Future studies are needed to study cell regrowth after LT.
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Affiliation(s)
- B Alonso
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain; Department of Clinical Microbiology and Infectious Diseases, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - M J Pérez-Granda
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain; Cardiac Surgery Postoperative Care Unit, Hospital General Universitario Gregorio Marañón, Madrid, Spain; CIBER Enfermedades Respiratorias - CIBERES (CB06/06/0058), Madrid, Spain
| | - A Rodríguez-Huerta
- Hematology Department, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - C Rodríguez
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain; Pharmacy Department, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - E Bouza
- Microbiology Department, Faculty of Medicine, Universidad Complutense de Madrid, Spain
| | - M Guembe
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain; Department of Clinical Microbiology and Infectious Diseases, Hospital General Universitario Gregorio Marañón, Madrid, Spain.
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Guembe M, Alonso B, Lucio J, Pérez-Granda MJ, Cruces R, Sánchez-Carrillo C, Fernández-Cruz A, Bouza E. Biofilm production is not associated with poor clinical outcome in 485 patients with Staphylococcus aureus bacteraemia. Clin Microbiol Infect 2017; 24:659.e1-659.e3. [PMID: 29111401 DOI: 10.1016/j.cmi.2017.10.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 09/01/2017] [Revised: 10/02/2017] [Accepted: 10/20/2017] [Indexed: 01/26/2023]
Abstract
OBJECTIVES Staphylococcus aureus biofilm may constitute a major cause of virulence. Our main objective was to analyse whether there was an association between biofilm production and poor outcome in patients with S. aureus bacteraemia. METHODS We studied 485 S. aureus strains isolated from the blood of patients with bacteraemia from 2012 to 2015. We assessed in vitro biomass production using crystal violet assay and metabolic activity using tetrazolium salt assay. Strains were classified in tertile ranks as follows: low biomass producers, moderate biomass producers, high biomass producers, low metabolic activity, moderate metabolic activity and high metabolic activity. We excluded from analysis strains with moderate crystal violet and tetrazolium salt values. We defined poor outcome as fulfillment of one or more of the following conditions: 30-day attributable mortality, infective endocarditis, persistent bacteraemia and recurrent bacteraemia. RESULTS Outcome was poor in 199 (41.0%) of 485 S. aureus bacteraemia episodes. The distribution of poor outcome with respect to biomass production and metabolic activity was as follows: low biomass producers, 36.6% vs. high biomass producers, 43.2% (p 0.26); and low metabolic activity, 43.5% vs. high metabolic activity, 36.2% (p 0.91). The presence of methicillin-resistant S. aureus was the only characteristic that was more likely to be present in the high metabolic activity group (17.4% vs. 39.3%, p < 0.001). CONCLUSIONS Biofilm production, as determined by any of the methods used in the present study, is not associated with poor outcome in patients with S. aureus bacteraemia.
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Affiliation(s)
- M Guembe
- Department of Clinical Microbiology and Infectious Diseases, Hospital General Universitario Gregorio Marañón, Madrid, Spain; Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain.
| | - B Alonso
- Department of Clinical Microbiology and Infectious Diseases, Hospital General Universitario Gregorio Marañón, Madrid, Spain; Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - J Lucio
- School of Biology, Universidad Complutense de Madrid, Madrid, Spain
| | - M J Pérez-Granda
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain; Cardiac Surgery Postoperative Care Unit, Hospital General Universitario Gregorio Marañón, Madrid, Spain; CIBER Enfermedades Respiratorias-CIBERES (CB06/06/0058), Madrid, Spain
| | - R Cruces
- Department of Clinical Microbiology and Infectious Diseases, Hospital General Universitario Gregorio Marañón, Madrid, Spain; Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - C Sánchez-Carrillo
- Department of Clinical Microbiology and Infectious Diseases, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - A Fernández-Cruz
- Department of Clinical Microbiology and Infectious Diseases, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - E Bouza
- Department of Clinical Microbiology and Infectious Diseases, Hospital General Universitario Gregorio Marañón, Madrid, Spain; Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain; Medicine Department, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain; CIBER Enfermedades Respiratorias-CIBERES (CB06/06/0058), Madrid, Spain
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García-Gargallo M, Zurlohe M, Montero E, Alonso B, Serrano J, Sanz M, Herrera D. Evaluation of new chlorhexidine- and cetylpyridinium chloride-based mouthrinse formulations adjunctive to scaling and root planing: pilot study. Int J Dent Hyg 2016; 15:269-279. [PMID: 27762095 DOI: 10.1111/idh.12254] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/08/2016] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To compare the effect of two newly formulated chlorhexidine (CHX) and cetylpyridinium chloride (CPC) mouthrinses after scaling and root planing (SRP) in terms of clinical, microbiological, patient-based variables and adverse events, with a positive control with the same active components, already marketed and tested. METHODS A pilot, randomized clinical trial, double-blind, parallel design with 1-month follow-up was conducted. Chronic periodontitis patients requiring non-surgical periodontal therapy were enrolled and randomly assigned to: (i) SRP and test-1 (new reformulation: 0.12% CHX and 0.05% CPC); (ii) SRP and test-2 (new formulation: 0.03% CHX and 0.05% CPC); or (iii) SRP and positive control (commercial product: 0.12% CHX and 0.05% CPC). All variables were evaluated at baseline and 1 month after SRP. Quantitative variables were compared by means of anova or Kruskal-Wallis test and qualitative variables by chi-square or McNemar tests. RESULTS Thirty patients (10 per group) were included. After 1 month, there were significant differences among groups in plaque levels (P = 0.016) as test-1 showed less sites with plaque than test-2 (31.15% [standard error-SE 2.21%] versus 49.39% [SE 4.60%), respectively). No significant differences were found for global patient perception of the product or in adverse effects. Test groups showed better results in levels and proportions (P = 0.022) of Capnocytophaga spp. CONCLUSIONS Within the limitations of this pilot study, it can be concluded that the newly formulated 0.12% CHX and 0.05% CPC mouthrinse showed larger plaque level reductions, without showing more adverse effects, when compared to the other two mouthrinses, after SRP.
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Affiliation(s)
- M García-Gargallo
- Section of Graduate Periodontology, Faculty of Odontology, University Complutense, Madrid, Spain
| | - M Zurlohe
- Section of Graduate Periodontology, Faculty of Odontology, University Complutense, Madrid, Spain
| | - E Montero
- Section of Graduate Periodontology, Faculty of Odontology, University Complutense, Madrid, Spain
| | - B Alonso
- Etiology and Therapy of Periodontal Diseases (ETEP) Research Group, Faculty of Odontology, University Complutense, Madrid, Spain
| | - J Serrano
- Etiology and Therapy of Periodontal Diseases (ETEP) Research Group, Faculty of Odontology, University Complutense, Madrid, Spain
| | - M Sanz
- Etiology and Therapy of Periodontal Diseases (ETEP) Research Group, Faculty of Odontology, University Complutense, Madrid, Spain
| | - D Herrera
- Etiology and Therapy of Periodontal Diseases (ETEP) Research Group, Faculty of Odontology, University Complutense, Madrid, Spain
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Smolyakov G, Pruvost S, Cardoso L, Alonso B, Belamie E, Duchet-Rumeau J. AFM PeakForce QNM mode: Evidencing nanometre-scale mechanical properties of chitin-silica hybrid nanocomposites. Carbohydr Polym 2016; 151:373-380. [DOI: 10.1016/j.carbpol.2016.05.042] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 05/03/2016] [Accepted: 05/13/2016] [Indexed: 12/21/2022]
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Batalla A, Coto E, Gómez J, Eirís N, González-Fernández D, Gómez-De Castro C, Daudén E, Llamas-Velasco M, Prieto-Perez R, Abad-Santos F, Carretero G, García FS, Godoy YB, Cardo LF, Alonso B, Iglesias S, Coto-Segura P. IL17RA gene variants and anti-TNF response among psoriasis patients. Pharmacogenomics J 2016; 18:76-80. [PMID: 27670766 DOI: 10.1038/tpj.2016.70] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 07/25/2016] [Accepted: 08/25/2016] [Indexed: 12/18/2022]
Abstract
Polymorphisms at genes encoding proteins involved in the pathogenesis of psoriasis (Psor) or in the mechanism of action of biological drugs could influence the treatment response. Because the interleukin (IL)-17 family has a central role in the pathogenesis of Psor, we hypothesized that IL17RA variants could influence the response to anti-TNF drugs among Psor patients. To address this issue we performed a cross-sectional study of Psor patients who received the biological treatments for the first time, with a follow-up of at least 6 months. All of the patients were Caucasian, older than 18 years old, with chronic plaque Psor, and had completed at least 24 weeks of anti-TNF therapy (adalimumab, etanercept or infliximab). The treatment response to anti-TNF agents was evaluated according to the achievement of PASI50 and PASI75 at weeks 12 and 24. Those who achieved PASI75 at week 24 were considered good responders. All patients were genotyped for the selected single-nucleotide polymorphisms (SNPs) at IL17RA gene. A total of 238 patients were included (57% male, mean age 46 years). One hundred and five patients received adalimumab, 91 patients etanercept and 42 infliximab. The rs4819554 promoter SNP allele A was significantly more common among responders at weeks 12 (P=0.01) and 24 (P=0.04). We found a higher frequency of AA versus AG+GG among responders, but the difference was only significant at week 12 (P=0.03, odd ratio=1.86, 95% confidence of interval=1.05-3.27). Thus, in the study population, the SNP rs4819554 in the promoter region of IL17RA significantly influences the response to anti-TNF drugs at week 12.
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Affiliation(s)
- A Batalla
- Department of Dermatology II; Hospital Universitario Central Asturias; Oviedo, Spain
| | - E Coto
- Department of Molecular Genetics, Hospital Universitario Central Asturias, Oviedo, Spain
| | - J Gómez
- Department of Molecular Genetics, Hospital Universitario Central Asturias, Oviedo, Spain
| | - N Eirís
- Department of Dermatology II; Hospital Universitario Central Asturias; Oviedo, Spain
| | - D González-Fernández
- Department of Dermatology II; Hospital Universitario Central Asturias; Oviedo, Spain
| | - C Gómez-De Castro
- Department of Dermatology II; Hospital Universitario Central Asturias; Oviedo, Spain
| | - E Daudén
- Department of Dermatology, Hospital Universitario de la Princesa, Instituto de Investigación Sanitaria Princesa (IIS-IP), Madrid, Spain
| | - M Llamas-Velasco
- Department of Dermatology, Hospital Universitario de la Princesa, Instituto de Investigación Sanitaria Princesa (IIS-IP), Madrid, Spain
| | - R Prieto-Perez
- Department of Clinical Pharmacology, Hospital Universitario de la Princesa, Instituto Teófilo Hernando, University Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria la Princesa (IP), Madrid, Spain
| | - F Abad-Santos
- Department of Clinical Pharmacology, Hospital Universitario de la Princesa, Instituto Teófilo Hernando, University Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria la Princesa (IP), Madrid, Spain
| | - G Carretero
- Department of Dermatology, HU Gran Canaria Doctor Negrín, Las Palmas de Gran Canaria, Spain
| | - F S García
- Department of Immunology, HU Gran Canaria Doctor Negrín, Las Palmas de Gran Canaria, Spain
| | - Y B Godoy
- Unidad Investigación HU Gran Canaria Doctor Negrín, Las Palmas de Gran Canaria, Spain
| | - L F Cardo
- Department of Molecular Genetics, Hospital Universitario Central Asturias, Oviedo, Spain
| | - B Alonso
- Department of Molecular Genetics, Hospital Universitario Central Asturias, Oviedo, Spain
| | - S Iglesias
- Department of Molecular Genetics, Hospital Universitario Central Asturias, Oviedo, Spain
| | - P Coto-Segura
- Department of Dermatology II; Hospital Universitario Central Asturias; Oviedo, Spain
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Maranesi M, Parillo F, Leonardi L, Rebollar PG, Alonso B, Petrucci L, Gobbetti A, Boiti C, Arruda-Alencar J, Moura A, Zerani M. Expression of nerve growth factor and its receptors in the uterus of rabbits: functional involvement in prostaglandin synthesis. Domest Anim Endocrinol 2016; 56:20-8. [PMID: 26986844 DOI: 10.1016/j.domaniend.2016.02.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 02/08/2016] [Accepted: 02/09/2016] [Indexed: 01/24/2023]
Abstract
The aim of the present study was to evaluate: (1) the presence of nerve growth factor (NGF), neurotrophic tyrosine kinase receptor 1 (NTRK1), and nerve growth factor receptor (NGFR) in the rabbit uterus; and (2) the in vitro effects of NGF on PGF2α and PGE2 synthesis and on the PGE2-9-ketoreductase (PGE2-9-K) activity by the rabbit uterus. Nerve growth factor, NTRK1, and NGFR were immunolocalized in the luminal and glandular epithelium and stroma cells of the endometrium. reverse transcriptase polymerase chain reaction indicated the presence of messenger RNA for NGF, NTRK1, and NGFR in the uterus. Nerve growth factor increased (P < 0.01) in vitro secretions of PGF2α and PGE2 but coincubation with either NTRK1 or oxide nitric synthase (NOS) inhibitors reduced (P < 0.01) PGF2α production and blocked (P < 0.01) PGE2 secretion. Prostaglandins releases were lower (P < 0.01) than control when uterine samples were treated with NGF plus cyclooxygenase inhibitor. However, addition of NGFR inhibitor reduced (P < 0.01) PGF2α secretion less efficiently than NTRK1 or NOS inhibitors but had no effect on PGE2 yield. Nerve growth factor increased (P < 0.01) the activity of PGE2-9-K, whereas coincubation with NTRK1 or NOS inhibitors abolished (P < 0.01) this increase in PGE2-9-K activity. However, cotreatment with either cyclooxygenase or NGFR inhibitors had no effect on PGE2-9-K activity. This is the first study to document the distribution of NGF/NTRK1 and NGFR systems and their effects on prostaglandin synthesis in the rabbit uterus. NGF/NTRK1 increases PGF2α and PGE2 productions by upregulating NOS and PGE2-9-K activities, whereas NGF/NGFR augments only PGF2α secretion, through an intracellular mechanism that is still unknown.
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Affiliation(s)
- M Maranesi
- Dipartimento di Medicina Veterinaria, Università degli Studi di Perugia, Perugia, 06216, Italy.
| | - F Parillo
- Scuola di Bioscienze e Medicina Veterinaria, Università degli Studi di Camerino, Matelica (MC), 62024, Italy
| | - L Leonardi
- Dipartimento di Medicina Veterinaria, Università degli Studi di Perugia, Perugia, 06216, Italy
| | - P G Rebollar
- Departamento Producción Animal, ETSI Agrónomos, Universidad Politécnica de Madrid, Ciudad Universitaria, Madrid, 28040, Spain
| | - B Alonso
- Departamento Producción Animal, ETSI Agrónomos, Universidad Politécnica de Madrid, Ciudad Universitaria, Madrid, 28040, Spain
| | - L Petrucci
- Scuola di Bioscienze e Medicina Veterinaria, Università degli Studi di Camerino, Matelica (MC), 62024, Italy
| | - A Gobbetti
- Scuola di Bioscienze e Medicina Veterinaria, Università degli Studi di Camerino, Matelica (MC), 62024, Italy
| | - C Boiti
- Dipartimento di Medicina Veterinaria, Università degli Studi di Perugia, Perugia, 06216, Italy
| | - J Arruda-Alencar
- Department of Animal Science, Federal University of Ceará, Fortaleza, CE, 60020-181, Brazil
| | - A Moura
- Department of Animal Science, Federal University of Ceará, Fortaleza, CE, 60020-181, Brazil
| | - M Zerani
- Scuola di Bioscienze e Medicina Veterinaria, Università degli Studi di Camerino, Matelica (MC), 62024, Italy
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Alonso B, Sobrón FB, Vidal C, Vaquero J. [Pretibial pseudocyst after anterior cruciate ligament reconstruction with a biocomposite screw]. Acta Ortop Mex 2016; 30:150-153. [PMID: 27984690] [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] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report the case of a patient who presented a pretibial extra-articular cyst two years after an arthroscopically assisted ACL reconstruction using an autologous bone-patellar tendon-bone graft. The tibial fixation was achieved with a bioabsorbable screw made of poly-L, D-lactic and -tricalcium phosphate (-TCP). A subcutaneous pseudocystic lesion was excised. It consisted of a capsular fibrous tissue with minimal milky fluid (1 ml) centrally. It penetrated into the tibial tunnel but did not communicate with the knee joint space. The histopathological analysis demonstrated fibrous tissue with multinucleated giant cells and refractile particles which suggested a foreign body reaction. After the surgery, the patient recovered perfectly well and he returned to his pre-injury level of physical activity in two months. To the best of our knowledge, this is the first report of this complication in a patient with a biocomposite screw made of poly-L, D-lactic and -tricalcium phosphate (-TCP).
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Affiliation(s)
- B Alonso
- Servicio de Cirugía Ortopédica y Traumatología, Hospital General Universitario Gregorio Marañón, Madrid, España
| | - F B Sobrón
- Cirugía Ortopédica y Traumatología, Hospital Infanta Cristina, Madrid, España
| | - C Vidal
- Servicio de Cirugía Ortopédica y Traumatología, Hospital General Universitario Gregorio Marañón, Madrid, España
| | - J Vaquero
- Servicio de Cirugía Ortopédica y Traumatología, Hospital General Universitario Gregorio Marañón, Madrid, España
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Coto‐Segura P, González‐Fernández D, Batalla A, Gómez J, González‐Lara L, Queiro R, Alonso B, Iglesias S, Coto E. Common and rare
CARD14
gene variants affect the antitumour necrosis factor response among patients with psoriasis. Br J Dermatol 2016; 175:134-41. [DOI: 10.1111/bjd.14461] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/19/2016] [Indexed: 12/11/2022]
Affiliation(s)
- P. Coto‐Segura
- Department of Dermatology Hospital Universitario Central Asturias Oviedo Spain
- Deparment of Medicine Universidad Oviedo Oviedo Spain
| | | | - A. Batalla
- Department of Dermatology Hospital Universitario Central Asturias Oviedo Spain
| | - J. Gómez
- Department of Molecular Genetics Hospital Universitario Central Asturias Oviedo Spain
| | - L. González‐Lara
- Department of Dermatology Hospital Universitario Central Asturias Oviedo Spain
| | - R. Queiro
- Department of Reumatology Hospital Universitario Central Asturias Oviedo Spain
| | - B. Alonso
- Department of Molecular Genetics Hospital Universitario Central Asturias Oviedo Spain
| | - S. Iglesias
- Department of Molecular Genetics Hospital Universitario Central Asturias Oviedo Spain
| | - E. Coto
- Deparment of Medicine Universidad Oviedo Oviedo Spain
- Department of Molecular Genetics Hospital Universitario Central Asturias Oviedo Spain
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Romero A, Alonso B, Latorre I, García J. Respiratory monitoring with electrical impedance tomography for lung protective ventilation and alveolar recruitment maneuver in a patient with a single lung transplant and early graft dysfunction. ACTA ACUST UNITED AC 2015; 63:347-52. [PMID: 26633603 DOI: 10.1016/j.redar.2015.09.003] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 08/26/2015] [Accepted: 09/02/2015] [Indexed: 12/16/2022]
Abstract
A case is presented on a patient who underwent left single lung transplantation for emphysema type COPD. There was early graft dysfunction gradeiii during the immediate postoperative period, which required the implantation of an extracorporeal membrane oxygenator (ECMO). Respirator ventilatory parameters were adjusted to avoid lung distension, low tidal volume (Vc) (280ml), high respiratory rates (20rpm), and a positive pressure at end expiration (PEEP) level of 8cmH2O. On monitoring the pulmonary tidal volume distribution by bedside electrical impedance tomography (EIT), it was noted that most of the tidal volume was distributed in the native lung emphysema. An alveolar recruitment manoeuvre was performed, under control of the EIT, that enabled the current volume and distribution and the pressures required to ventilate the transplanted lung to be observed.
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Affiliation(s)
- A Romero
- Departamento de Anestesiología, Reanimación y Cuidados Críticos, Hospital Universitario Puerta de Hierro-Majadahonda, Majadahonda, Madrid, España.
| | - B Alonso
- Departamento de Anestesiología, Reanimación y Cuidados Críticos, Hospital Universitario Puerta de Hierro-Majadahonda, Majadahonda, Madrid, España
| | - I Latorre
- Departamento de Anestesiología, Reanimación y Cuidados Críticos, Hospital Universitario Puerta de Hierro-Majadahonda, Majadahonda, Madrid, España
| | - J García
- Departamento de Anestesiología, Reanimación y Cuidados Críticos, Hospital Universitario Puerta de Hierro-Majadahonda, Majadahonda, Madrid, España
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Guisasola MC, Ortiz A, Chana F, Alonso B, Vaquero J. Early inflammatory response in polytraumatized patients: Cytokines and heat shock proteins. A pilot study. Orthop Traumatol Surg Res 2015; 101:607-11. [PMID: 26068807 DOI: 10.1016/j.otsr.2015.03.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 11/25/2014] [Accepted: 03/02/2015] [Indexed: 02/02/2023]
Abstract
INTRODUCTION In the initial phases after polytrauma there is an hyperinflammatory state that sometimes leads to multiple organ dysfunction syndrome (MODS) and death, and that appears to be responsible for posttraumatic immunosuppression; among the trigger endogenous stimuli, heat shock proteins (HSPs) have been proposed. The objectives of this study were to analyze if some inflammatory mediators can be considered prognostic biomarkers of outcome, and the possible role of HSPA1A in posttraumatic immunosuppression. HYPOTHESIS Cytokines and HSPs could be early prognostic biomarkers of inflammatory and immune response in polytrauma patients. MATERIALS AND METHODS A prospective observational descriptive pilot study was carried out, evaluating the early inflammatory and stress response of 18 polytraumatized patients (ISS>16) on hospital admission, at 12hours, 24hours, and 48hours posttrauma. Variable means were compared using non-parametric tests; qualitative and quantitative variables were analyzed using a Spearman's correlation test. RESULTS Seven patients met criteria for MODS. Statistically significant changes were recorded in leukocyte count, C-reactive-protein (CRP), IL-6, TNF-α, and IL-1ß concentrations. HSPA1A levels were significantly higher immediately after the accident followed by gradual lowering. Anti-Hsp70 antibodies showed a significant reduction in all the studied time-points. MODS did not influence either plasma levels of leukocytes, fibrinogen, RCP or anti-Hsp70, but patients with MODS had higher plasma levels of IL-6 and TNF-α and a slower decrease of HSPA1A concentrations. DISCUSSION The higher serum concentrations of TNF-α and IL-6 found in patients with MODS, suggests a possible role as potential early predictive markers for systemic inflammatory response and clinical complications. The higher levels of HSPA1A in patients with MODS, allows proposing HSPA1A as a useful prognostic trauma biomarker early after severe injury and to consider a "damage control surgery". The significant reduction in the levels of anti-Hsp70 antibodies could reflect a part of posttraumatic immunosuppression and hydrocortisone treatment might be suggested. LEVEL III case-control study.
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Affiliation(s)
- M C Guisasola
- Medicina y Cirugía Experimental, Hospital General Universitario "Gregorio Marañón", Dr. Esquerdo 46, 28007 Madrid, Spain; Facultad de Medicina, UCM, Madrid, Spain.
| | - A Ortiz
- Cirugía Ortopédica y Traumatología, Hospital General Universitario "Gregorio Marañón", Madrid, Spain
| | - F Chana
- Cirugía Ortopédica y Traumatología, Hospital General Universitario "Gregorio Marañón", Madrid, Spain; Facultad de Medicina, UCM, Madrid, Spain
| | - B Alonso
- Cirugía Ortopédica y Traumatología, Hospital General Universitario "Gregorio Marañón", Madrid, Spain
| | - J Vaquero
- Cirugía Ortopédica y Traumatología, Hospital General Universitario "Gregorio Marañón", Madrid, Spain; Facultad de Medicina, UCM, Madrid, Spain
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Hernández-García C, Holgado W, Plaja L, Alonso B, Silva F, Miranda M, Crespo H, Sola IJ. Carrier-envelope-phase insensitivity in high-order harmonic generation driven by few-cycle laser pulses. Opt Express 2015; 23:21497-21508. [PMID: 26367996 DOI: 10.1364/oe.23.021497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We present evidence for self-stabilization of the relative spectral phase of high-order harmonic emission against intensity variations of the driving field. Our results demonstrate that, near the laser focus, phase matching of the harmonic field from a macroscopic target can compensate for the intensity dependence of the intrinsic phase of the harmonics emitted by a single radiator. As a consequence, we show experimentally and theoretically the insensitivity of the harmonic spectra produced at the laser focus against variations of the carrier-envelope phase (CEP) of a sub-two-cycle driving field. In addition, the associated attosecond pulse trains exhibit phase locking against CEP changes of the few-cycle driver.
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Holgado W, Alonso B, San Román J, Sola IJ. Temporal and spectral structure of the infrared pulse during the high order harmonic generation. Opt Express 2014; 22:10191-10201. [PMID: 24921722 DOI: 10.1364/oe.22.010191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We present, for the first time, the complete pulse characterization of the infrared pulse after generating harmonics. A systematic study of the high harmonic generation process, and the generating infrared pulse characterization, has been done by changing the focus-gas-jet relative position. We have concluded, supported by nonlinear propagation simulations, that there is a correlation between the spectral and temporal nonlinear evolution of the infrared generating field and the structures shown in the harmonic signal. We have identified two different pressure regimes: the low pressure regime, characterized by the effects produced by the plasma generated by the infrared pulse, and the high pressure regime where the plasma and the Kerr effect generated by the infrared field are both present. These observations highlight the important role played by the nonlinear propagation of the generating field in the high harmonic generation context.
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Zeadna A, Holzer H, Son WY, Demirtas E, Reinblatt S, Dahan MH, Colleselli V, D'Costa E, Wildt L, Seeber B, Kashevarova AA, Skryabin NA, Nikitina TV, Lebedev IN, Bordignon PP, Mugione A, Vanni VS, Vigano P, Papaleo E, Candiani M, Somigliana E, Amodio G, Gregori S, Guo YH, Li R, Wang LL, Chen SL, Chen X, Guo W, Ye DS, Liu YD, Renzini MM, Dal Canto M, Coticchio G, Comi R, Brigante C, Caliari I, Brambillasca F, Merola M, Lain M, Turchi D, Karagouga G, Sottocornola M, Fadini R, Wekker MZ, Mol F, van Wely M, Ankum WM, Mol BW, van der Veen F, Hajenius PJ, van Mello NM, Verlengia C, Alviggi E, Rampini MR, Alfano P, Pergolini I, Marconi D, Iacobelli N, Muzi MC, Gelli G, Alviggi C, Colicchia A, Herraiz-Nicuesa L, Tejera-Alhambra M, Garcia-Segovia A, Ramos-Medina R, Alonso B, Gil-Pulido J, Martin L, Caballero M, Rodriguez-Mahou M, Sanchez-Ramon S, de Jong PG, Kaandorp SP, Di Nisio M, Goddijn M, Middeldorp S, Lledo B, Turienzo A, Ortiz JA, Morales R, Ten J, Llacer J, Bernabeu R, Ramos-Medina R, Garcia-Segovia A, Gil J, Leon JA, Alonso B, Tejera-Alhambra M, Seyfferth A, Aguaron A, Alonso J, de Albornoz EC, Carbone J, Caballero P, Fernandez-Cruz E, Ortiz-Quintana L, Sanchez-Ramon S, Lou YY, Jin F, Zheng YM, Li LJ, Le F, Wang LY, Liu SY, Pan PP, Hu CX, Akoum A, Bourdiec A, Shao R, Rao CV, Scarpellini F, Sbracia M, Jancar N, Bokal EV, Ban-Frangez H, Drobnic S, Korosec S, Pinter B, Salamun V, Yamaguchi M, Honda R, Uchino K, Ohba T, Katabuchi H, Leylek O, Tiras B, Saltik AYSE, Halicigil C, Kavci N, Wiser A, Gilbert A, Nahum R, Orvieto R, Hass J, Hourvitz A, Weissman A, Younes G, Dirnfeld M, Hershko A, Shulma A, Holzer H, Shalom-Paz E, Tulandi T, O'Neill SM, Agerbo E, Kenny LC, Henriksen TB, Kearney PM, Greene RA, Mortensen PB, Khashan AS, Talaulikar VS, Bax BE, Manyonda I, Van Mello N, Mol F, Hajenius PJ, Ankum WM, Mol BW, van der Veen F, van Wely M. Early pregnancy. Hum Reprod 2013. [DOI: 10.1093/humrep/det209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Algarra M, Radotić K, Kalauzi A, Alonso B, Casado C, Esteves da Silva J. Component analysis of fluorescence spectra of thiol DAB dendrimer/ZnSe-PEA nanoparticles. Talanta 2013; 105:267-71. [DOI: 10.1016/j.talanta.2012.09.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Revised: 08/30/2012] [Accepted: 09/10/2012] [Indexed: 10/27/2022]
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Fiorentino M, Gioffré A, Cirone K, Morsella C, Alonso B, Delgado F, Paolicchi F. First isolation of Mycobacterium avium subsp. paratuberculosis in a dairy goat in Argentina: Pathology and molecular characterization. Small Rumin Res 2012. [DOI: 10.1016/j.smallrumres.2012.06.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Yurchenko GR, Matkovskii AK, Mel’nik IV, Dudarko OA, Stolyarchuk NV, Zub YL, Alonso B. Adsorption properties of silica-based sorbents containing phosphonic acid residues. Colloid J 2012. [DOI: 10.1134/s1061933x12030179] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Tejera-Alhambra M, Ramos-Medina R, Segovia AG, Rodríguez-Mahou M, Aguarón Î, Nicuesa LH, Gil J, Alonso B, León J, Fernández-Cruz E, Sánchez-Ramón S. Increased prevalence of undiagnosed celiac disease among women with recurrent pregnancy loss: experience in Spain. J Reprod Immunol 2012. [DOI: 10.1016/j.jri.2012.03.452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Ramos-Medina R, Garcia-Segovia A, Aguaron A, Tejera-Alhambra M, Gil J, Alonso B, Vicario J, Rodriguez-Mahou M, Carbone J, Leon J, Ortega V, Fatima L, Seyfferth A, Caballero M, Alonso J, Marbán E, Caputo J, Caballero P, Fernandez-Cruz E, Sánchez-Ramón S. Defining risk for recurrent gestational failure by blood natural killer cells subsets. J Reprod Immunol 2012. [DOI: 10.1016/j.jri.2012.03.278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Algarra M, Campos B, Alonso B, Miranda M, Martínez Á, Casado C, Esteves da Silva J. Thiolated DAB dendrimers and CdSe quantum dots nanocomposites for Cd(II) or Pb(II) sensing. Talanta 2012; 88:403-7. [DOI: 10.1016/j.talanta.2011.11.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Revised: 10/25/2011] [Accepted: 11/01/2011] [Indexed: 12/21/2022]
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García Martínez M, Alonso B, Casado CM, Losada J, García Armada MP. Multioperational Oxidase Biosensors Based on Carbosilane Dendrimers with Interacting Ferrocenes. ELECTROANAL 2011. [DOI: 10.1002/elan.201100404] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Varela O, Alonso B, Sola IJ, San Román J, Zaïr A, Méndez C, Roso L. Self-compression controlled by the chirp of the input pulse. Opt Lett 2010; 35:3649-3651. [PMID: 21042379 DOI: 10.1364/ol.35.003649] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Self-compressed (SC) pulses have been achieved through the filamentation process in air without any additional dispersion compensation, using the input pulse chirp as the control parameter. For any studied input pulse energy (3-5 mJ), we have found two opposite sign input group-delay dispersion values for which SC pulses can be achieved systematically. In addition, we have observed that the energy coupled into the inner core of the filament is always of the order of 20% of the total input pulse energy, which opens the way to a scalable technique to obtain intense short pulses directly from the filamentation process.
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Affiliation(s)
- O Varela
- Centro de Láseres Pulsados, CLPU, E-37008, Salamanca, Spain.
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Nicola AM, Elena S, Alonso B, Esteves Madero J. Evaluation of the Fluorescence Polarization Assay (FPA) for diagnosis of brucella melitensis infection of goats in Argentina. Pril (Makedon Akad Nauk Umet Odd Med Nauki) 2010; 31:133-143. [PMID: 20703188] [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: 05/29/2023]
Abstract
AIM Determine the optimal cut-off and the use of Fluorescence Polarization Assay (FPA) to improve the detection of brucellosis in individual goats in Argentina. METHODS Sera from 96 goats from a flock with abortion due to B. melitensis biovar 1 were used to assess the efficacy of the FPA to detect brucellosis in goats. FPA results were compared with those of the Buffered Antigen Plate Agglutination test (BPAT) confirmed by Seroagglutination in tube (SAT), the competitive enzyme-linked immunosorbent assay (c-ELISA) and the indirect enzyme-linked immunosorbent assay (i-ELISA). Sera from 554 goats free from brucellosis were tested with the BPAT, SAT, c-ELISA and i-ELISA to determine its Specificity. Vaccination had not been performed in the flocks evaluated. RESULTS The most appropriate cut-off was selected for the FPA by using MedCalc software. It was fixed at 87 mP giving a sensitivity and specificity of 98.1% (CI 89.9-99.7) and 92.8% (CI 90.4-94.7). The relative sensitivity compared with i-ELISA and c-ELISA was 97% and 92.9% respectively. The relative specificity compared with i-ELISA and c-ELISA was 97.5% and 98% respectively. The kappa measures of agreement between tests was higher than 0.75 CONCLUSION: The high correlation between FPA results and other serological methods with sera goats is indicative of the excellent performance of FPA technique in diagnosis of caprine brucellosis and we endorse it as a recommended method.
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Affiliation(s)
- A M Nicola
- Reference Laboratory OIE for Brucellosis National Service of Animal Health (DILAB - SENASA) Martínez, Buenos Aires, ARGENTINA
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García Armada M, Losada J, López-Villanueva F, Frey H, Alonso B, Casado C. Electrochemical and bioelectrocatalytical properties of novel block-copolymers containing interacting ferrocenyl units. J Organomet Chem 2008. [DOI: 10.1016/j.jorganchem.2008.05.038] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Rey RC, de Larrañaga G, Lepera S, Cohen M, Saposnik G, Alonso B, Sica RE. Activated protein C resistance in patients with arterial ischemic stroke. J Stroke Cerebrovasc Dis 2007; 10:128-31. [PMID: 17903813 DOI: 10.1053/jscd.2001.25464] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2000] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Activated C protein resistance (APC-R) has recently been reported to be a common cause of thrombophilia; it may be acquired or caused by a genetic defect (factor V Leiden mutation). It is clear that there is an association between APC-R and venous thrombosis. It has been suggested that there is a possible relationship of APC-R with arterial ischemic stroke (IS), but case-control studies have not given enough clues for considering APC-R as a main risk factor. OBJECTIVES To assess the incidence of APC-R in patients with IS of several ethiologies in Buenos Aires. PATIENTS AND METHODS Seventy-two patients with IS were assessed for signs or symptoms of previous clinical thrombophilia and the presence of vascular risk factors (RF). They were searched for APC-R (COATEST, APC resistance-V, with a predilution of the samples) test. Determinations were carried out between 1 to 4 months after the ischemic episode. The plasma of 50 healthy control subjects (blood donors) was used as controls. RESULTS None of the patients had signs of previous thrombophilia; 57 (79.2%) had RF for IS, and 3 (4.2%) had APC-R (all of them with RF). One subject in the control group (2%) showed a low APC response (1/50). The occurrence of APC-R among patients with stroke was not significantly higher when compared with the occurrence of APC-R among the control subjects. CONCLUSIONS In the present series, the incidence of factor V Leiden related APC-R in the group with IS was similar to the healthy population. Other risk factors were associated in patients showing APC-R.
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Affiliation(s)
- R C Rey
- Department of Neurology, Ramos Mejia Hospital, Buenos Aires, Argentina
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Fontana L, Cunto E, Nogueras C, Alonso B, San Juan J. ROLE OF 4G/5G PROMOTER POLYMORPHISM OF PLASMINOGEN ACTIVATOR INHIBITOR-1 GENE IN OUTCOME OF SEPSIS. J Thromb Haemost 2007. [DOI: 10.1111/j.1538-7836.2007.tb03237.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Gervais C, Coelho C, Azaïs T, Maquet J, Laurent G, Pourpoint F, Bonhomme C, Florian P, Alonso B, Guerrero G, Mutin PH, Mauri F. First principles NMR calculations of phenylphosphinic acid C6H5HPO(OH): assignments, orientation of tensors by local field experiments and effect of molecular motion. J Magn Reson 2007; 187:131-40. [PMID: 17481933 DOI: 10.1016/j.jmr.2007.03.018] [Citation(s) in RCA: 22] [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] [Subscribe] [Scholar Register] [Received: 02/12/2007] [Revised: 03/19/2007] [Accepted: 03/20/2007] [Indexed: 05/15/2023]
Abstract
The complete set of NMR parameters for (17)O enriched phenylphosphinic acid C(6)H(5)HP( *)O(*OH) is calculated from first principles by using the Gauge Including Projected Augmented Wave (GIPAW) approach [C.J. Pickard, F. Mauri, All-electron magnetic response with pseudopotentials: NMR chemical shifts, Phys. Rev. B 63 (2001) 245101/1-245101/13]. The analysis goes beyond the successful assignment of the spectra for all nuclei ((1)H, (13)C, (17)O, (31)P), as: (i) the (1)H CSA (chemical shift anisotropy) tensors (magnitude and orientation) have been interpreted in terms of H bonding and internuclear distances. (ii) CSA/dipolar local field correlation experiments have allowed the orientation of the direct P-H bond direction in the (31)P CSA tensor to be determined. Experimental and calculated data were compared. (iii) The overestimation of the calculated (31)P CSA has been explained by local molecular reorientation and confirmed by low temperature static (1)H-->(31)P CP experiments.
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Affiliation(s)
- C Gervais
- Université Pierre et Marie Curie-Paris 6, UMR 7574 Laboratoire de Chimie de la Matière Condensée de Paris, Paris F-75005, France.
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Alonso B, Aleman R, Rodríguez L, Llanos M, Cruz J, Oramas J, Rodríguez E, García R, Ponce S, Batista J. Bone mineral density in women with non-metastatic breast cancer: Effect of intravenous bisphosphonates given before adjuvant therapies. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.11038] [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: 11/20/2022] Open
Abstract
11038 Background: Adjuvant therapies shown survival improve of non-metastatic breast cancer (NMBC) patients, but they also decrease bone mineral density (BMD). Bisphosphonates are effective agents for the management of osteoporosis. Intravenous zoledronate, which is approved for the treatment of malignant hypercalcemia, multiple myeloma, and skeletal metastases, can suppress bone resorption and are often considered first-line therapy for the treatment of osteoporosis. We have analyzed the effects of chemotherapy on BMD of women with NMBC who received before adjuvant therapies intravenous bisphosphonates (zoledronic acid). Methods: We prospectively studied the effects of a single intravenous zoledronic acid dose (4 mg), on BMD of 74 women with NMBC (stage I-III), administred previous to the adjuvant therapies. The patients were referred to the Medical Oncology Service of University Hospital of Canary Islands between 2003 y 2006. Lumbar and hip BMD (g/cm2) was measured at diagnosis and after chemotherapy. The results were compared with a group of 80 patients with NMBC who received adjuvant therapy without intravenous bisphosphonates. Results: Breast cancer patients the median age was 52 ± 10 years old and the body mass index was 28,2 ± 5.5 kg/m2. At baseline there were not differences in BMD between the group that received bisphosphonates and the group with only chemotherapy at any of lumbar or femoral bone sites. In our study, the BMD after chemotherapy and intravenous bisphosphonates (n=74) significantly increased at femoral neck (0.805 ± 0.01, 0,826± 0.12; p=0.002) and trochanter (0.709 ± 0.01, 0.724 ± 0.01; p=0.002) and remained stable at lumbar, intertrochanter, total hip and Ward’s triangle; whether the group without bisphosphonates significantly decreased at lumbar (1.014 ± 0; 0.995 ± 0, p=0.0001), trochanter (0.701± 0; 0.690 ± 0, p=0,046), intertrochanter (1,095 ± 0; 1.078 ± 0, p=0.0001) and total hip (0,924 ± 0; 0.915 ± 0, p=0.046) areas (table). Conclusions: Women with NMBC are affected by early bone loss after adjuvant chemotherapy. Bisphosphonates intravenous (zoledronic acid) given before adjuvant therapy might be an effective treatment for this bone loss, increasing BMD or remaining stable. No significant financial relationships to disclose.
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Affiliation(s)
- B. Alonso
- Hospital Universitario de Canarias, La Laguna, Spain
| | - R. Aleman
- Hospital Universitario de Canarias, La Laguna, Spain
| | - L. Rodríguez
- Hospital Universitario de Canarias, La Laguna, Spain
| | - M. Llanos
- Hospital Universitario de Canarias, La Laguna, Spain
| | - J. Cruz
- Hospital Universitario de Canarias, La Laguna, Spain
| | - J. Oramas
- Hospital Universitario de Canarias, La Laguna, Spain
| | - E. Rodríguez
- Hospital Universitario de Canarias, La Laguna, Spain
| | - R. García
- Hospital Universitario de Canarias, La Laguna, Spain
| | - S. Ponce
- Hospital Universitario de Canarias, La Laguna, Spain
| | - J. Batista
- Hospital Universitario de Canarias, La Laguna, Spain
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Stolyarchuk NV, Mel’nik IV, Dobryanskaya GI, Zub YL, Alonso B. A magic angle spinning NMR study of xerogels functionalized by 3-mercaptopropyl groups. Russ J Phys Chem 2007. [DOI: 10.1134/s0036024407060179] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Orta-Rodriguez J, Riesgo Y, Vieitez P, Alonso B. Prevalence of agitation-hostility during acute episodes in patients with schizophrenia. Eur Psychiatry 2007. [DOI: 10.1016/j.eurpsy.2007.01.1099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Verdu MT, Martínez-Lage JF, Alonso B, Sánchez-Ortega JL, Garcia-Candel A. Non-surgical management of intracranial subdural hematoma complicating spinal anesthesia. Neurocirugia (Astur) 2007; 18:40-3. [PMID: 17393045] [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: 05/14/2023]
Abstract
We report the case of a 29 year-old woman who presented a symptomatic intracranial subdural hematoma developing shortly after spinal anesthesia. The patient was fully conscious at clinical onset, and thus we treated her conservatively with an epidural autologous blood patch and close neurological observation. Given the clinical improvement the possibility of surgery was discauded in agreement with the neurosurgical team. Most cases of subdural hematoma appearing after spinal anesthesia are treated with surgery. In the present case the subdural hemorrhage was detected at our hospital 20 days after the anesthetic procedure, and given the excellent state of consciousness, we choosed a conservative management.
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Affiliation(s)
- M T Verdu
- Hospital Universitario Virgen de la Arrixaca, Murcia, Spain
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Verdú M, Martínez-Lage J, Alonso B, Sánchez-Ortega J, Garcia-Candel A. Non-surgical management of intracranial subdural hematoma complicating spinal anesthesia. Neurocirugia (Astur) 2007. [DOI: 10.4321/s1130-14732007000100005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Affiliation(s)
- C. Sanchez
- a Chimie de la Matière Condensée, UMR CNRS 7574, Université Pierre et Marie Curie , 4, place Jussieu, 75252 , Paris , France
| | - F. Ribot
- a Chimie de la Matière Condensée, UMR CNRS 7574, Université Pierre et Marie Curie , 4, place Jussieu, 75252 , Paris , France
| | - L. Rozes
- a Chimie de la Matière Condensée, UMR CNRS 7574, Université Pierre et Marie Curie , 4, place Jussieu, 75252 , Paris , France
| | - B. Alonso
- a Chimie de la Matière Condensée, UMR CNRS 7574, Université Pierre et Marie Curie , 4, place Jussieu, 75252 , Paris , France
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Griemberg G, Bautista CT, Pizzimenti MC, Orfus G, Alonso B, Fernández T, Cando O, Martínez Peralta L. High prevalence of syphilis-HIV co-infection at four hospitals of the city of Buenos Aires, Argentina. Rev Argent Microbiol 2006; 38:134-6. [PMID: 17152210] [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: 05/12/2023] Open
Abstract
A cross-sectional anonymous study of 261 STD (sexually transmitted diseases) outpatients and 288 outpatients from other hospital departments was conducted at four major city hospitals in Buenos Aires. High prevalence of human immunodeficiency virus (HIV) (14.5%) and syphilis (30.2%) was noted. Fifty-two persons were diagnosed with both HIV and syphilis. Of the 87 HIV cases observed, 52 (59.7%) were co-infected with syphilis. Stratified analysis by gender showed that the prevalence of HIV, syphilis and HIV/syphilis co-infection was significantly (p < 0.001) higher in men than women (HIV: 20.1% vs. 4.6%; syphilis: 39.3% vs. 17.4%; co-infection: 13.6% vs. 1.7%). Integrated HIV/STD intervention programs and more effective surveillance are required in Argentina.
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Affiliation(s)
- G Griemberg
- Departamento de Bioquímica Clínica, Facultad de Farmacia y Bioquímica, UBA and Hospital de Clínicas José de San Martín, UBA , Argentina.
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38
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Losada J, Zamora M, García Armada P, Cuadrado I, Alonso B, Casado CM. Bienzyme sensors based on novel polymethylferrocenyl dendrimers. Anal Bioanal Chem 2006; 385:1209-17. [PMID: 16673089 DOI: 10.1007/s00216-006-0330-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2005] [Revised: 01/17/2006] [Accepted: 01/24/2006] [Indexed: 11/30/2022]
Abstract
Amperometric bienzyme electrodes with horseradish peroxidase (HRP) and glucose oxidase (GOx) co-immobilized on polymethylferrocenyl dendrimers deposited onto platinum electrodes have been used for determination of the hydrogen peroxide produced by the oxidase during the enzymatic reaction. The redox dendrimers consist of flexible poly(propylenimine) dendrimer cores functionalised with octamethylferrocenyl units. The effects of dendrimer generation, the thickness of the dendrimer layer, substrate concentration, interferences, and reproducibility on the response of the sensors were investigated. The new bienzyme biosensors respond to substrate at work potential values between 200 and 50 mV (vs. SCE), have good sensitivity, and are resistant to interferences. Figure.
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Affiliation(s)
- J Losada
- Dpto. de Ingeniería Química Industrial, E. T. S. I. I., Universidad Politecnica Madrid, José Gutiérrez Abascal no 2, 28006, Madrid, Spain.
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39
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Digges K, Gabler H, Mohan P, Alonso B. Characteristics of the injury environment in far-side crashes. Annu Proc Assoc Adv Automot Med 2005; 49:185-97. [PMID: 16179148 PMCID: PMC3217448] [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: 05/04/2023]
Abstract
The population of occupants in far-side crashes that are documented in the US National database (NASS/CDS) was studied. The annual number of front seat occupants with serious or fatal injuries in far-side planar and rollover crashes was 17,194. The crash environment that produces serious and fatal injuries to belted front seat occupants in planar far-side crashes was investigated in detail. It was found that both the change in velocity and extent of damage were important factors that relate to crash severity. The median severity for crashes with serious or fatal injuries was a lateral delta-V of 28 kph and an extent of damage of CDC 3.6. Vehicle-to-vehicle impacts were simulated by finite element models to determine the intrusion characteristics associated with the median crash condition. These simulations indicated that the side damage caused by the IIHS barrier was representative of the damage in crashes that produce serious injuries in far-side crashes. Occupant simulations of the IIHS barrier crash at 28 kph showed that existing dummies lack biofidelity in upper body motion. The analysis suggested test conditions for studying far-side countermeasures and supported earlier studies that showed the need for an improved dummy to evaluate safety performance in the far-side crash environment.
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Affiliation(s)
- K Digges
- The National Crash Analysis Center, George Washington University, USA
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40
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de Larrañaga G, Perés S, Puga L, Alonso B, Benetucci J. Association between the acquired free protein S deficiency in HIV-infected patients with the lipid profile levels. J Thromb Haemost 2004; 2:1195-7. [PMID: 15219212 DOI: 10.1111/j.1538-7836.2004.00774.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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41
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De Larrañaga G, Galich A, Puga L, Alonso B, Benetucci J. Insulin resistance status is an important determinant of PAI-1 levels in HIV-infected patients, independently of the lipid profile. J Thromb Haemost 2004; 2:532-4. [PMID: 15009482 DOI: 10.1111/j.1538-7836.2004.00602.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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42
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Abstract
This study reports the patterns of agglutination of 93 clinical Candida isolates by 14 commercial lectins. The isolates were of the species Candida albicans (55), C. tropicalis (12), C. guilliermondii (10). C. glabrata (eight) and C. parapsilosis (eight). Hundred percent of isolates were agglutinated, at least, by a panel of three lectins: Canavalia ensiformis (ConA), Lens culinaris (LCA) and Pisum sativum (PSA), all of them with alpha-D-mannose specificity. In addition, another panel of three lectins could distinguish between C. glabrata, C. tropicalis and C. albicans. Lectin typing may be of potential value for taxonomic and epidemiological studies of yeasts in clinical laboratories.
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Affiliation(s)
- A Muñoz
- Department of Microbiology and Parasitology, Faculty of Biology, University of Santiago de Compostela, Spain.
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43
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Takada K, Díaz DJ, Abruña HD, Cuadrado I, González B, Casado CM, Alonso B, Morán M, Losada J. Cobaltocenium-functionalized poly(propylene imine) dendrimers: redox and electromicrogravimetric studies and AFM imaging. Chemistry 2001; 7:1109-17. [PMID: 11303870 DOI: 10.1002/1521-3765(20010302)7:5<1109::aid-chem1109>3.0.co;2-#] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The first four generations of cobaltocenium-functionalized, diaminobutane-based poly(propylene imine) dendrimers DAB-dend-Cb,(PFb)x (x = 4, 8, 16, and 32; Cb=[Co(eta5-C5H4CONH)(eta5-C5H5)] (1-4) have been synthesized and characterized. The redox activity of the cobaltocenium centers in 1-4 has been characterized by using cyclic voltammetry and the electrochemical quartz-crystal microbalance (EQCM). All of the dendrimers exhibit reversible redox chemistry associated with the cobaltocenium/cobaltocene redox couple. Upon reduction. the dendrimers exhibit a tendency to electrodeposit onto the electrode surface, which is more pronounced for the higher generations. Pt and glassy carbon electrodes could be modified with films derived from 1-4,exhibiting a well-defined and persistent electrochemical response. EQCM measurements show that the dendrimers adsorb, at open circuit, onto platinum surfaces at monolayer or submonolayer coverage. Cathodic potential scanning past -0.75 V at which the cobaltocenium sites are reduced, gave rise to the electrodeposition of multilayer equivalents of the dendrimers. The additional material gradually desorbs upon re-oxidation so that only a monolayer equivalent remains on the electrode surface. Changes in film morphology as a function of dendrimer generation and surface coverage were studied by using admittance measurements of the quartz-crystal resonator on the basis of its electrical equivalent circuit, especially in terms of its resistance parameter. In general, we find that films of the lower dendrimer generation 1 behave rigidly, whereas those of the higher generation 4 exhibit viscoelastic behavior with an intermediate behavior being exhibited by 2 and 3. Using tapping-mode atomic force microscopy (AFM). we have been able to obtain molecularly resolved images of dendrimer 4 adsorbed on a Pt(111) electrode.
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Affiliation(s)
- K Takada
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853-1301, USA
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44
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Bonhomme C, Azaïs T, Bonhomme-Coury L, Livage J, D'Espinose JB, Bertani P, Hirschinger J, Alonso B. High-Resolution Solid-State Nmr: a Versatile Tool for the Study of AI-O-P Clusters. PHOSPHORUS SULFUR 2001. [DOI: 10.1080/10426500108546561] [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: 10/22/2022]
Affiliation(s)
- C. Bonhomme
- a Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- b Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- c Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- d Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- e Physique Quantique , ESPCI, 10 rue Vauquelin, 75005 Paris
| | - T. Azaïs
- a Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- b Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- c Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- d Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- e Physique Quantique , ESPCI, 10 rue Vauquelin, 75005 Paris
| | - L. Bonhomme-Coury
- a Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- b Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- c Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- d Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- e Physique Quantique , ESPCI, 10 rue Vauquelin, 75005 Paris
| | - J. Livage
- a Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- b Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- c Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- d Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- e Physique Quantique , ESPCI, 10 rue Vauquelin, 75005 Paris
| | - J-B. D'Espinose
- a Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- b Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- c Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- d Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- e Physique Quantique , ESPCI, 10 rue Vauquelin, 75005 Paris
| | - P. Bertani
- a Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- b Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- c Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- d Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- e Physique Quantique , ESPCI, 10 rue Vauquelin, 75005 Paris
| | - J. Hirschinger
- a Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- b Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- c Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- d Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- e Physique Quantique , ESPCI, 10 rue Vauquelin, 75005 Paris
| | - B. Alonso
- a Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- b Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- c Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- d Université P. et M. Curie , UMR 7574, 4 Place Jussieu, 75005 Paris
- e Physique Quantique , ESPCI, 10 rue Vauquelin, 75005 Paris
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Deveaux Y, Alonso B, Pierrugues O, Godon C, Kazmaier M. Molecular cloning and developmental expression of AtGR1, a new growth-related Arabidopsis gene strongly induced by ionizing radiation. Radiat Res 2000; 154:355-64. [PMID: 11023598 DOI: 10.1667/0033-7587(2000)154[0355:mcadeo]2.0.co;2] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [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: 11/03/2022]
Abstract
Screening for mRNAs that accumulate after DNA damage induced by ionizing radiation, we have isolated a 2.0-kb cDNA coding for a new Arabidopsis PEST-box protein named AtGR1 (A. thaliana gamma response 1) with an expression profile similar to that observed for several plant cell cycle-related proteins. Using an anti-AtGR1 antibody, we have shown that the AtGR1 protein is expressed at basal levels in mitotically dividing cells (meristematic tissues and organ primordia) and at a strongly enhanced level in endoreduplicating cells (stipules, trichomes). Using transgenic Arabidopsis plants that express the GUS reporter gene under the control of the AtGR1 promoter, we have demonstrated that the observed AtGR1 protein distribution is due to the promoter activity. Our results suggest that basal AtGR1 levels are associated with progression through mitosis, whereas elevated intracellular levels of AtGR1 seem to induce changes between the S and M phases of the cell cycle that trigger somatic cells to enter the endoreduplication cycle. Ionizing radiation-induced rapid and dose-dependent accumulation of AtGR1 mRNA in cell cultures and plant tissues leads to tissue-specific accumulation of AtGR1 protein, best observed in ovules, which never undergo an endoreduplication cycle. It therefore appears that the radiation-induced transient AtGR1 accumulation reflects DNA damage-dependent transient cell cycle arrest before mitosis, which is necessary to accomplish DNA repair prior to chromosome segregation and cytokinesis.
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MESH Headings
- Amino Acid Sequence
- Arabidopsis/drug effects
- Arabidopsis/genetics
- Arabidopsis/growth & development
- Arabidopsis/radiation effects
- Arabidopsis Proteins
- Cell Cycle/genetics
- Cell Cycle/radiation effects
- Cell Cycle Proteins/biosynthesis
- Cell Cycle Proteins/genetics
- Cloning, Molecular
- DNA Damage
- DNA Repair
- DNA, Plant/genetics
- DNA, Plant/metabolism
- DNA, Plant/radiation effects
- Gamma Rays
- Gene Expression Profiling
- Gene Expression Regulation, Developmental/drug effects
- Gene Expression Regulation, Developmental/radiation effects
- Gene Expression Regulation, Plant/drug effects
- Gene Expression Regulation, Plant/radiation effects
- Genes, Plant
- Genes, Reporter
- Hydrogen Peroxide/pharmacology
- Molecular Sequence Data
- Oxidative Stress
- Plant Structures/growth & development
- Plants, Genetically Modified
- Promoter Regions, Genetic
- RNA, Messenger/biosynthesis
- RNA, Plant/biosynthesis
- Recombinant Fusion Proteins/biosynthesis
- Sequence Alignment
- Sequence Homology, Amino Acid
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Affiliation(s)
- Y Deveaux
- CEA/Cadarache-DSV-DEVM-Laboratoire de Radiobiologie Végétale, 13108 St. Paul-lez-Durance Cedex, France
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46
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Rustérucci C, Montillet JL, Agnel JP, Battesti C, Alonso B, Knoll A, Bessoule JJ, Etienne P, Suty L, Blein JP, Triantaphylidès C. Involvement of lipoxygenase-dependent production of fatty acid hydroperoxides in the development of the hypersensitive cell death induced by cryptogein on tobacco leaves. J Biol Chem 1999; 274:36446-55. [PMID: 10593941 DOI: 10.1074/jbc.274.51.36446] [Citation(s) in RCA: 188] [Impact Index Per Article: 7.5] [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: 01/16/2023] Open
Abstract
Lipid peroxidation was investigated in relation with the hypersensitive reaction in cryptogein-elicited tobacco leaves. A massive production of free polyunsaturated fatty acid (PUFA) hydroperoxides dependent on a 9-lipoxygenase (LOX) activity was characterized during the development of leaf necrosis. The process occurred after a lag phase of 12 h, was accompanied by the concomitant increase of 9-LOX activity, and preceded by a transient accumulation of LOX transcripts. Free radical-mediated lipid peroxidation represented 10% of the process. Inhibition and activation of the LOX pathway was shown to inhibit or to activate cell death, and evidence was provided that fatty acid hydroperoxides are able to mimic leaf necrotic symptoms. Within 24 h, about 50% of leaf PUFAs were consumed, chloroplast lipids being the major source of PUFAs. The results minimize the direct participation of active oxygen species from the oxidative burst in membrane lipid peroxidation. They suggest, furthermore, the involvement of lipase activity to provide the free PUFA substrates for LOX. The LOX-dependent peroxidative pathway, responsible for tissue necrosis, appears as being one of the features of hypersensitive programmed cell death.
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Affiliation(s)
- C Rustérucci
- CEA-Cadarache, Direction des Sciences du Vivant, Département d'Ecophysiologie Végétale et de Microbiologie, Laboratoire de Radiobiologie Végétale, 13108 Saint-Paul Lez Durance Cedex, France
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47
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Affiliation(s)
- M T Verdú
- Department of Anesthesiology, Virgen de la Arrixaca University Hospital, Murcia, Spain.
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48
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Abstract
This study reports the patterns of agglutination of 77 clinical isolates of methicillin-resistant Staphylococcus aureus by 32 commercially available lectins. Cell suspensions were not pre-treated. Each isolate was cultured on three media: Columbia blood agar, trypticase-soy agar and Chapman Stone agar. The lectins agglutinating each isolate varied widely depending on culture medium; only five isolates were agglutinated by the same set of lectins regardless of the culture medium used. Lectin typing could be a useful epidemiological tool, but it is necessary to standardise assay conditions (notably culture medium) to enable meaningful comparison of the results produced by different research groups or centres.
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Affiliation(s)
- A MUñTOZ
- Department of Microbiology and Parasitology, Faculty of Biology, University of Santiago de Compostela
| | - O Alvarez
- Department of Microbiology and Parasitology, Faculty of Biology, University of Santiago de Compostela
| | - B Alonso
- Department of Microbiology and Parasitology, Faculty of Biology, University of Santiago de Compostela
| | - J Llovo
- Laboratory of Microbiology, Complex Hospitalario Universitano de Santiago (Hospital de Conxo), Spain
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49
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de Larrañaga G, Forastiero R, Carreras LO, Zala N, Guzman L, Alonso B. Acquired hypoprothrombinemia related to high titres of antiprotein-phospholipid antibodies. Thromb Haemost 1999; 81:317-8. [PMID: 10064016] [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: 02/11/2023]
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50
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Arechavala A, Baiges D, Negroni R, Alonso B. Study of some lymphocyte subset counts and cytokine levels in cryptococcosis associated with AIDS. Rev Iberoam Micol 1997; 14:160-3. [PMID: 15538818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023] Open
Abstract
Approximately 100 new cases per year of cryptococcosis in HIV+ patients are observed in Muñiz Hospital, 35% of them suffer a fatal outcome within the first four weeks after diagnosis in spite of treatment. Apparently there is not a useful parameter that allows a clear prediction of this early fatal outcome of the disease. The aim of this study is to determine some cytokine levels and several lymphocyte subpopulations counts in order to correlate these results with the evolution of the disease. Forty HIV+ patients suffering culture confirmed cryptococcosis were enrolled in this study, 8 HIV+ patients without cryptococcosis and 8 healthy individuals with negative serology for HIV were included as controls. The following determinations were done in all cases: CD3+, CD4+, CD8+, CD16+CD3-, CD19+ cell counts, IL-1; IL-12, TNFalpha in serum and TNFalpha in CSF. Ten cases with cryptococcosis and AIDS were controlled three months after treatment. The average of CD4+ and NK cell counts in patients before treatment were 22/microl and 90/microl respectively; IL-1 levels were higher in the patients than in the healthy control group, conversely IL-12 levels did not show significant differences in the three studied groups. Serum concentrations of TNFalpha were higher in patients than in the control group and were not modified after treatment, conversely antifungal medication diminished IL-1 concentration and remarkably increased NK cell counts. At the same time antigen levels in serum and CSF decreased. The results obtained seem to show that the immunological alterations observed in these patients are those characteristically exhibited in severe HIV disease and that some parameters such as CD8+ cell counts lower than 200/microl, less than 50 CD4+/microl, more than 50 pg/ml of TNF-alpha and serum capsular antigen titer higher than 1:5000 seem to predict a rapidly fatal course of infection.
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Affiliation(s)
- A Arechavala
- Unidad de Micología, Hospital de Infecciosas F.J. Muñiz, Buenos Aires, Argentina.
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