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Pérez-Obiol A, Romero AM, Menéndez J, Rios A, García-Sáez A, Juliá-Díaz B. Nuclear shell-model simulation in digital quantum computers. Sci Rep 2023; 13:12291. [PMID: 37516795 PMCID: PMC10387092 DOI: 10.1038/s41598-023-39263-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 07/22/2023] [Indexed: 07/31/2023] Open
Abstract
The nuclear shell model is one of the prime many-body methods to study the structure of atomic nuclei, but it is hampered by an exponential scaling on the basis size as the number of particles increases. We present a shell-model quantum circuit design strategy to find nuclear ground states by exploiting an adaptive variational quantum eigensolver algorithm. Our circuit implementation is in excellent agreement with classical shell-model simulations for a dozen of light and medium-mass nuclei, including neon and calcium isotopes. We quantify the circuit depth, width and number of gates to encode realistic shell-model wavefunctions. Our strategy also addresses explicitly energy measurements and the required number of circuits to perform them. Our simulated circuits approach the benchmark results exponentially with a polynomial scaling in quantum resources for each nucleus. This work paves the way for quantum computing shell-model studies across the nuclear chart and our quantum resource quantification may be used in configuration-interaction calculations of other fermionic systems.
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Affiliation(s)
- A Pérez-Obiol
- Barcelona Supercomputing Center, 08034, Barcelona, Spain.
| | - A M Romero
- Departament de Física Quàntica i Astrofísica (FQA), Universitat de Barcelona (UB), c. Martí i Franqués, 1, 08028, Barcelona, Spain.
- Institut de Ciències del Cosmos (ICCUB), Universitat de Barcelona (UB), c. Martí i Franqués, 1, 08028, Barcelona, Spain.
| | - J Menéndez
- Departament de Física Quàntica i Astrofísica (FQA), Universitat de Barcelona (UB), c. Martí i Franqués, 1, 08028, Barcelona, Spain
- Institut de Ciències del Cosmos (ICCUB), Universitat de Barcelona (UB), c. Martí i Franqués, 1, 08028, Barcelona, Spain
| | - A Rios
- Departament de Física Quàntica i Astrofísica (FQA), Universitat de Barcelona (UB), c. Martí i Franqués, 1, 08028, Barcelona, Spain
- Institut de Ciències del Cosmos (ICCUB), Universitat de Barcelona (UB), c. Martí i Franqués, 1, 08028, Barcelona, Spain
| | - A García-Sáez
- Barcelona Supercomputing Center, 08034, Barcelona, Spain
- Qilimanjaro Quantum Tech, 08007, Barcelona, Spain
| | - B Juliá-Díaz
- Departament de Física Quàntica i Astrofísica (FQA), Universitat de Barcelona (UB), c. Martí i Franqués, 1, 08028, Barcelona, Spain
- Institut de Ciències del Cosmos (ICCUB), Universitat de Barcelona (UB), c. Martí i Franqués, 1, 08028, Barcelona, Spain
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Losa F, Mancha M, Moragriega N, Perez A, Manzana A, Rios A, Aranda A, Cabezudo E. CN46 Catheter-related venous thrombosis: Experience with blue advance peripherally inserted central catheter (PICC) in a day hospital during the pandemic. Ann Oncol 2022. [PMCID: PMC9472564 DOI: 10.1016/j.annonc.2022.07.371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Phelps C, Hardie A, Madison K, Chamberlin J, Rios A, Mendez S, Yamada R. Abstract No. 536 Dual energy iodine overlay images reduce time to interpret active arterial extravasation, particularly for less experienced readers. J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.518] [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: 11/24/2022] Open
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Soler G, Legido R, Perez X, Martinez-Villacampa M, Santos C, Losa F, Ruffinelli J, Mulet N, Teule A, Castany R, Gallego R, Carbonell M, Manzana A, Rios A, Saldaña J, Salazar R. 513P Prospective evaluation of the G8 screening tool for predicting survival in elderly patients with colon cancer. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.623] [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: 11/28/2022] Open
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Flores-Tamez V, Escalante B, Rios A. Peroxynitrite-Induced Intracellular Ca2+ Depression in Cardiac Myocytes: Role of Sarco/Endoplasmic Reticulum Ca2+ Pump. Folia Biol (Praha) 2019; 65:237-245. [PMID: 32362307] [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: 06/11/2023]
Abstract
Several studies have shown that peroxynitrite (ONOO-), formed upon the reaction of •NO and O2-, is increased in many cardiovascular diseases and is detrimental to myocardial function. Proteins associated with Ca2+ homeostasis regulation in the heart may be involved in these effects. Thus, the aim of this study was to elucidate the mechanisms associated with ONOO--induced effects. We evaluated [Ca2+]i regulation, sarco/endoplasmic reticulum Ca2+- binding proteins, and phosphorylation levels of the ryanodine receptor in isolated rat myocytes. Electrical field-induced intracellular Ca2+ transients and contractions were recorded simultaneously. Myocytes superfused with 3-morpholinosydnonimine N-ethylcarbamide (SIN-1), an ONOO- donor, decreased the amplitude of Ca2+ transients and contraction in a dose-response (1-200 μM) manner. Similarly, SIN-1 increased half-time decay in a concentration-dependent manner. Co-infusion of the ONOO- donor with FeTMPyP (1 μM), an ONOO- decomposition catalyst, inhibited the effects induced by ONOO-. Impaired sarcoplasmic reticulum Ca2+ uptake caused by ONOO- (SIN-1 200 μM) was confirmed by a reduction of caffeine-evoked Ca2+ release along with prolongation of the half-time decay. Surprisingly, ONOO- induced a spontaneous Ca2+ transient that started at the beginning of the relaxation phase and was inhibited by tetracaine. Also, reduced phosphorylation at the ryanodine receptor 2 (RyR2)-Ser-2814 site was observed. In conclusion, deficient sarco/endoplasmic reticulum Ca2+-ATPase-mediated Ca2+ uptake concomitant with augmented Ca2+ release by RyR2 in myocytes may be associated with modification of myocyte Ca2+ handling by ONOO-. Thus, development of cardiac failure in diabetes, nephropathy, or hypertension may be related with elevated ONOO- in cardiac tissue.
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Affiliation(s)
- V Flores-Tamez
- Centro de Investigación y de Estudios Avanzados del IPN, Unidad-Monterrey, PIIT, Apodaca NL, México
| | - B Escalante
- Centro de Investigación y de Estudios Avanzados del IPN, Unidad-Monterrey, PIIT, Apodaca NL, México
- Universidad de Monterrey, San Pedro Garza García, NL, México
| | - A Rios
- Centro de Investigación y de Estudios Avanzados del IPN, Unidad-Monterrey, PIIT, Apodaca NL, México
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Ramirez P, Ferreras D, Febrero B, Royo M, Cascales P, Rodriguez J, Rios A, Fernandez J, González M, Sanchez-Bueno F, Robles R, Parrilla P. Outcomes of Liver Transplantation Using Older Donors After Circulatory Death and the Super-Rapid Technique: 14 Cases. Transplant Proc 2018; 50:601-604. [DOI: 10.1016/j.transproceed.2017.11.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Revised: 10/22/2017] [Accepted: 11/11/2017] [Indexed: 01/14/2023]
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Rios A, Polls A, Dickhoff WH. Pairing and Short-Range Correlations in Nuclear Systems. J Low Temp Phys 2017; 189:234-249. [PMID: 31258176 PMCID: PMC6560486 DOI: 10.1007/s10909-017-1818-7] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 10/04/2017] [Indexed: 06/09/2023]
Abstract
The structure and density dependence of the pairing gap in infinite matter is relevant for astrophysical phenomena and provides a starting point for the discussion of pairing properties in nuclear structure. Short-range correlations can significantly deplete the available single-particle strength around the Fermi surface and thus provide a reduction mechanism of the pairing gap. Here, we study this effect in the singlet and triplet channels of both neutron matter and symmetric nuclear matter. Our calculations use phase-shift equivalent interactions and chiral two-body and three-body interactions as a starting point. We find an unambiguous reduction of the gap in all channels with very small dependence on the NN force in the singlet neutron matter and the triplet nuclear matter channel. In the latter channel, SRC alone provide a 50% reduction of the pairing gap.
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Affiliation(s)
- A. Rios
- Department of Physics, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey GU2 7XH UK
| | - A. Polls
- Departament de Fsica Quàntica i Astrofísica and Institut de Ciènces del Cosmos, Universitat de Barcelona, Avinguda Diagonal 647, 8028 Barcelona, Spain
| | - W. H. Dickhoff
- Department of Physics, Washington University, St. Louis, MO 63130 USA
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Cerone JB, Santos RP, Tristram D, Lamson DM, Stellrecht KA, St George K, Horgan MJ, Rios A. Incidence of respiratory viral infection in infants with respiratory symptoms evaluated for late-onset sepsis. J Perinatol 2017; 37:922-926. [PMID: 28518131 PMCID: PMC7100264 DOI: 10.1038/jp.2017.69] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 03/19/2017] [Accepted: 04/06/2017] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To determine the frequency, etiology and impact of respiratory viral infection (RVI) on infants evaluated for late-onset sepsis (LOS), defined as sepsis occurring >72 h of life, in the neonatal intensive care unit. STUDY DESIGN Prospective observational study conducted from 6 March 2014 to 3 May 2016 on infants evaluated for LOS. PCR viral panel performed on nasopharyngeal specimens among infants with clinical suspicion for RVI. Sequence analysis was performed to determine viral subtypes. Fisher's exact or χ2 tests were done to determine the impact of RVI. RESULTS During the 26-month study, there were 357 blood cultures obtained for LOS evaluations, 29 (8%) had a respiratory virus detected. Only 88 (25%) of infants evaluated for LOS also had clinical suspicion for a respiratory viral infection. RSV (14 of 29; 48%) was the predominant virus detected. Almost all infants (13 of 14; 93%) with RSV required increased respiratory support. Antimicrobial therapy was withheld or discontinued on most infants with a virus detected (18 of 29; 62%) and in the majority where there was no confirmed bacterial co-infection (18 of 20; 90%). CONCLUSION The incidence of RVI in infants being evaluated for LOS is about 8%. RVI should be considered in LOS evaluation to prevent unnecessary antibiotic therapy.
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Affiliation(s)
- J B Cerone
- Department of Pediatrics/Division of Neonatology, Albany Medical Center, Albany, NY, USA
| | - R P Santos
- Department of Pediatrics/Division of Infectious Disease at Albany Medical Center, Albany, NY, USA
| | - D Tristram
- Department of Pediatrics/Division of Infectious Disease at Albany Medical Center, Albany, NY, USA
| | - D M Lamson
- Laboratory of Viral Diseases at Wadsworth Center, New York State Department of Health, Albany, NY, USA
| | - K A Stellrecht
- Department of Pathology and Laboratory Medicine at Albany Medical Center, Albany, NY, USA
| | - K St George
- Laboratory of Viral Diseases at Wadsworth Center, New York State Department of Health, Albany, NY, USA
| | - M J Horgan
- Department of Pediatrics/Division of Neonatology, Albany Medical Center, Albany, NY, USA
| | - A Rios
- Department of Pediatrics/Division of Neonatology, Albany Medical Center, Albany, NY, USA
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López-Canales OA, Castillo-Hernandez MC, Vargas-Robles H, Rios A, López-Canales JS, Escalante B. Role of adenylyl cyclase in reduced β-adrenoceptor-mediated vasorelaxation during maturation. ACTA ACUST UNITED AC 2017; 49:S0100-879X2016000700605. [PMID: 27383122 PMCID: PMC4942227 DOI: 10.1590/1414-431x20165285] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 05/06/2016] [Indexed: 11/25/2022]
Abstract
Beta-adrenergic receptor (βAR)-dependent blood vessel relaxation is impaired in older animals and G protein activation has been suggested as the causative mechanism. Here, we investigated the role of βAR subtypes (β1AR, β2AR, and β3AR) and cAMP in maturation-dependent vasorelaxation impairment. Aortic rings from 15 Sprague-Dawley male rats (3 or 9 weeks old) were harvested and left intact or denuded of the endothelium. Vascular relaxation in aortic rings from younger and older groups was compared in the presence of βAR subtype agonists and antagonists along with cAMP and cGMP antagonists. Isolated aortic rings were used to evaluate relaxation responses, protein expression was evaluated by western blot or real time PCR, and metabolites were measured by ELISA. Expression of βAR subtypes and adenylyl cyclase was assessed, and cAMP activity was measured in vascular tissue from both groups. Isoproterenol- and BRL744-dependent relaxation in aortic rings with and without endothelium from 9-week-old rats was impaired compared with younger rats. The β1AR antagonist CGP20712A (10-7 M) did not affect isoproterenol or BRL744-dependent relaxation in arteries from either group. The β2AR antagonist ICI-118,551 (10-7 M) inhibited isoproterenol-dependent aortic relaxation in both groups. The β3AR antagonist SR59230A (10-7 M) inhibited isoproterenol- and BRL744-dependent aortic ring relaxation in younger but not in older rats. All βAR subtypes were expressed in both groups, although β3AR expression was lower in the older group. Adenylyl cyclase (SQ 22536) or protein kinase A (H89) inhibitors prevented isoproterenol-induced relaxation in younger but not in older rats. Production of cAMP was reduced in the older group. Adenylyl cyclase III and RyR3 protein expression was higher in the younger group. In conclusion, altered expression of β3AR and adenylyl cyclase III may be responsible for reduced cAMP production in the older group.
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Affiliation(s)
- O A López-Canales
- Molecular Biomedicine Department, Center of Research and Advanced Studies, Unidad Zacatenco, Mexico City, Mexico
| | - M C Castillo-Hernandez
- Pharmacology Department, Superior School of Medicine, Polytechnic National Institute, Mexico City, Mexico
| | - H Vargas-Robles
- Molecular Biomedicine Department, Center of Research and Advanced Studies, Unidad Zacatenco, Mexico City, Mexico
| | - A Rios
- Center of Research and Advanced Studies, Monterrey, Nuevo León, Mexico
| | - J S López-Canales
- Pharmacology Department, Superior School of Medicine, Polytechnic National Institute, Mexico City, Mexico.,Perinatology National Institute "Isidro Espinosa de los Reyes", Mexico City, Mexico
| | - B Escalante
- Center of Research and Advanced Studies, Monterrey, Nuevo León, Mexico
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Méndez Blanco L, Herrero C, Fueyo M, Martos A, Abad D, Santin P, Palizas S, Alonso D, Rios A, Vilches M, Cabanillas R. EP-1765: Volume delineation based on 18FDG-PET and MRI in head and neck cancer treated with IG-VMAT. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)32169-2] [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: 11/27/2022]
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Mikla M, Rios A, Lopez-Navas A, Klimaszewska K, Krajewska-Kulak E, Martinez-Alarcón L, Ramis G, Ramirez P, Lopez Montesinos MJ. Organ Donation: What Are the Opinions of Nursing Students at the University of Bialystok in Poland? Transplant Proc 2017; 48:2482-2484. [PMID: 27742329 DOI: 10.1016/j.transproceed.2016.08.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Nursing students, as future professionals, have an enormous impact on the opinion of the rest of the population on topics of organ donation and transplantation (ODT). The objective of this study was to analyze the attitudes of nursing students at the University of Bialystok toward ODT, and to determine the factors that affect ithemt. METHODS Academic year 2011-2012. STUDY POPULATION nursing students at the University of Bialystok. Type of sampling: sampling points during 5 compulsory-attendance nursing courses with >80% fulfillment. Measuring instrument: validated questionnaire (PCID-ODT Rios) filled out anonymously and self-administered. RESULTS Completion rate of 90% (331/367): 58% (n = 191) in favor, 35% (n = 118) undecided, and 7% (n = 22) against. The most important variables were: being in the 1st year (odds ratio [OR], 4.444; 95% confidence interval [CI], 11.627-1.700; P = .002); not knowing any donor (OR, 12.048; 95% CI, 55.555-2.57; P = .018); being in favor of organ donation by a relative (OR, 6.25; 95% CI, 14.705-2.666; P < .001); discussing the topic with friends (OR, 2,785; 95% CI, 5.347-1.447; P = .002); not worried about the possible mutilation of the body after donation (OR, 3.039; 95% CI, 5.882-1.569; P = .001); favorable attitude toward ODT of mother (OR, 3.676 (0.881-1.814; P < .001); accepting other treatment options, such as inhumation (OR, 3.436; 95% CI, 7.092-1.655; P = .001); accepting autopsy after death (OR, 2.141; 95% CI, 4.065-1.126; P = .020); and professing the Catholic religion (OR, 3.436; 95% CI, 8.333-1.410; P = .007). CONCLUSIONS More than 42% of the nursing students were not in favor of organ donation, their attitudes influenced by various psychosocial factors.
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Affiliation(s)
- M Mikla
- International Collaborative Donor Project ("Projecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Nursing, University of Murcia, Murcia, Spain; Hospital General Universitario Reina Sofia, Murcia, Spain.
| | - A Rios
- International Collaborative Donor Project ("Projecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, Pediatrics, Obstetrics, and Gynecology, University of Murcia, Spain; Transplant Unit, Surgery Service, IMIB-Clinical Hospital Universitario Virgen de la Arrixaca, Murcia, Spain; Regional Transplant Center, Department of Health and Consumer Affairs in the Region of Murcia, Murcia, Spain
| | - A Lopez-Navas
- International Collaborative Donor Project ("Projecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, Pediatrics, Obstetrics, and Gynecology, University of Murcia, Spain; Department of Psychology, Catholic University San Antonio, UCAM, Murcia, Spain
| | - K Klimaszewska
- Faculty of Health Sciences, Medical University of Białystok, Białystok, Poland
| | - E Krajewska-Kulak
- Faculty of Health Sciences, Medical University of Białystok, Białystok, Poland
| | - L Martinez-Alarcón
- International Collaborative Donor Project ("Projecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, Pediatrics, Obstetrics, and Gynecology, University of Murcia, Spain; Transplant Unit, Surgery Service, IMIB-Clinical Hospital Universitario Virgen de la Arrixaca, Murcia, Spain; Regional Transplant Center, Department of Health and Consumer Affairs in the Region of Murcia, Murcia, Spain
| | - G Ramis
- Faculty of Veterinary, University of Murcia, Murcia, Spain
| | - P Ramirez
- Department of Surgery, Pediatrics, Obstetrics, and Gynecology, University of Murcia, Spain; Transplant Unit, Surgery Service, IMIB-Clinical Hospital Universitario Virgen de la Arrixaca, Murcia, Spain; Regional Transplant Center, Department of Health and Consumer Affairs in the Region of Murcia, Murcia, Spain
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Mikla M, Rios A, Lopez-Navas A, Gotlib J, Kilanska D, Martinez-Alarcón L, Ramis G, Ramirez P, Lopez Montesinos MJ. Knowledge of the Concept of Encephalic Death: Is This an Obstacle in the Acceptance of Donation and Transplantation of Organs Among Students of Nursing at the Medical University of Warsaw in Poland? Transplant Proc 2016; 48:2479-2481. [PMID: 27742328 DOI: 10.1016/j.transproceed.2016.08.023] [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: 10/20/2022]
Abstract
BACKGROUND The knowledge and acceptance of the concept of brain death among future health professionals is essential. The objective of this study was to analyze the knowledge of the concept of brain death among nursing students at the Medical University of Warsaw and determine the factors that affect it. METHODS Academic year 2011-2012, nursing students of the University of Poland. Sampling points in 5 compulsory-attendance nursing courses with a completion rate >80%. Validated questionnaire (PCID-DTO Rios), anonymous and self-administered. RESULTS The completion rate was 96% (793/828); 71% (n = 561) knew the concept of brain death, 22% (n = 178) did not know it, and 7% (n = 54) did not know that it implies the death of the patient. Variables related to the correct knowledge: 1) to be studying in 4th year compared with 1st year (85% vs 60%; P ≤ .001); 2) discuss the subject with family (76% vs 61%; P ≤ .001); 3) discuss with friends (73% vs 63%; P = .009); and 4) having a favorable attitude toward organ donation (74% vs 65%; P = .011). In the multivariate analysis, the variables that remained independent were studying in 4th year (odds ratio [OR], 3.809; 95% confidence interval [CI], 2.006-5.823; P ≤ .001) and discussed with family concerning donation and transplantation (OR, 1.718; 95% CI, 1.241-2.381; P ≤ .001). CONCLUSIONS One-third of the nursing students were unfamiliar with the concept of brain death.
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Affiliation(s)
- M Mikla
- Department of Nursing, University of Murcia, Spain; International Collaborative Donor Project ("Projecto Colaborativo Internacional Donante"), Murcia, Spain; Hospital General Universitario Reina Sofia, Murcia, Spain.
| | - A Rios
- International Collaborative Donor Project ("Projecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, Pediatrics, Obstetrics, and Gynecology, University of Murcia, Spain; Transplant Unit, Surgery Service, IMIB-Clinical Hospital Universitario Virgen de la Arrixaca, Murcia, Spain; Regional Transplant Center, Department of Health and Consumer Affairs in the Region of Murcia, Spain
| | - A Lopez-Navas
- International Collaborative Donor Project ("Projecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, Pediatrics, Obstetrics, and Gynecology, University of Murcia, Spain; Department of Psychology, Catholic University San Antonio, UCAM, Murcia, Spain
| | - J Gotlib
- Faculty of Health Sciences, Medical University of Warsaw, Poland
| | - D Kilanska
- Division of Nursing and Midwifery, Medical University of Lodz, Poland
| | - L Martinez-Alarcón
- International Collaborative Donor Project ("Projecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, Pediatrics, Obstetrics, and Gynecology, University of Murcia, Spain; Transplant Unit, Surgery Service, IMIB-Clinical Hospital Universitario Virgen de la Arrixaca, Murcia, Spain; Regional Transplant Center, Department of Health and Consumer Affairs in the Region of Murcia, Spain
| | - G Ramis
- Faculty of Veterinary, University of Murcia, Spain
| | - P Ramirez
- Department of Surgery, Pediatrics, Obstetrics, and Gynecology, University of Murcia, Spain; Transplant Unit, Surgery Service, IMIB-Clinical Hospital Universitario Virgen de la Arrixaca, Murcia, Spain; Regional Transplant Center, Department of Health and Consumer Affairs in the Region of Murcia, Spain
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Mikla M, Rios A, Lopez-Navas A, Gorzkowicz B, Kilanska D, Martinez-Alarcón L, Ramis G, Ramirez P, Lopez Montesinos MJ. Donate a Piece of Liver: Is This an Option Accepted by Future Nurses of Pomeranian Medical University in Poland? Transplant Proc 2016; 48:2485-2487. [PMID: 27742330 DOI: 10.1016/j.transproceed.2016.08.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND Liver transplantation from living donors (LLD) has become a viable and important source of liver grafts. The objective of this study was to analyze the attitude of nursing students at the Pomeranian Medical University in Poland on donation of live liver, and to determine the factors that affect it. METHODS Academic year 2011-2012, nursing students at a university in Poland, sampling points in 5 compulsory-attendance nursing courses with a completion rate of 80%, validated questionnaire (PCID-DVH Rios) filled out anonymously and self-administered. RESULTS The completion rate was 89% (227/254). Of the 227 students surveyed, 92% (n = 209) were in favor, 6% (n = 14) undecided, and 2% (n = 4) against. When the LLD is not related, 44% (n = 100) of respondents would be in favor. With a positive attitude toward this type of donation, we associated the following variables: 1) age, with the youngest showing a more favorable attitude (P = .006); 2) attitude in favor of living kidney donation (98% vs 85%; odds ratio, 4.950; 95% confidence interval, 9.259-2.652; P = .002); 3) attitude in favor of accepting a family LLD (96% vs 81%; P = .003); 4) discussing donation and transplantation with family (95% vs 87%; P = .043). CONCLUSIONS Ninety-two percent of nursing students at the Pomeranian Medical University in Poland were in favor of live organ donation, an attitude conditioned by various psychosocial factors.
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Affiliation(s)
- M Mikla
- International Collaborative Donor Project ("Projecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Nursing, University of Murcia, Murcia, Spain; Hospital General Universitario Reina Sofia, Murcia, Spain.
| | - A Rios
- International Collaborative Donor Project ("Projecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, Pediatrics, Obstetrics, and Gynecology, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, IMIB-Clinical Hospital Universitario Virgen de la Arrixaca, Murcia, Spain; Regional Transplant Center, Department of Health and Consumer Affairs in the Region of Murcia, Murcia, Spain
| | - A Lopez-Navas
- International Collaborative Donor Project ("Projecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, Pediatrics, Obstetrics, and Gynecology, University of Murcia, Murcia, Spain; Department of Psychology, Catholic University San Antonio, UCAM, Murcia, Spain
| | - B Gorzkowicz
- Faculty of Health Sciences, Pomeranian Medical University, Szczecin, Poland
| | - D Kilanska
- Division of Nursing and Midwifery, Medical University of Lodz, Lodz, Poland
| | - L Martinez-Alarcón
- International Collaborative Donor Project ("Projecto Colaborativo Internacional Donante"), Murcia, Spain; Department of Surgery, Pediatrics, Obstetrics, and Gynecology, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, IMIB-Clinical Hospital Universitario Virgen de la Arrixaca, Murcia, Spain; Regional Transplant Center, Department of Health and Consumer Affairs in the Region of Murcia, Murcia, Spain
| | - G Ramis
- Faculty of Veterinary, University of Murcia, Murcia, Spain
| | - P Ramirez
- Department of Surgery, Pediatrics, Obstetrics, and Gynecology, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, IMIB-Clinical Hospital Universitario Virgen de la Arrixaca, Murcia, Spain; Regional Transplant Center, Department of Health and Consumer Affairs in the Region of Murcia, Murcia, Spain
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Mikla M, Rios A, Lopez-Navas A, Andruszkiewicz A, Felsmann M, Martinez-Alarcón L, Ramis G, Ramirez P, Lopez Montesinos MJ. Opinion of Nursing Students of the University of Bydgoszcz in Poland About the Transplantation of Living Liver Donors. Transplant Proc 2015; 47:2587-9. [PMID: 26680043 DOI: 10.1016/j.transproceed.2015.09.030] [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] [Received: 08/20/2015] [Accepted: 09/17/2015] [Indexed: 10/22/2022]
Abstract
INTRODUCTION Liver transplantation from living liver donation (LLD) has become an important source of liver grafts. MATERIAL AND METHOD We studied the 2011-2012 academic year attitude of nursing students from a university in Poland. The sampling points were compulsory attendance in the 5 nursing courses. The validated questionnaire was Project Collaborative International Donor-Living Liver Donation Rios. The questionnaire was completed anonymously and was self-administered. RESULTS The completion rate was 89% (440 of 495); 91% (n = 398) were in favor of the related LLD, 8% (n = 37) were undecided, and 1% (n = 5) were against. When the attitude toward LLD is not related, 40% (n = 177) of respondents were in favor. The favorable attitude was associated with the following: consideration of the needs of organs for transplantations are covered (P ≤ .001); attitude in favor toward organ donation and transplantation (ODT) (P = .001); attitude in favor toward LLD (P = .007); attitude in favor of the acceptance of a LLD by a family member (P = .001); discussion of ODT with the family (P ≤ .001); being in favor of donating organs of a relative (P ≤ .001); and being Catholic (P = .003). After multivariate analysis, we observed the following significant correlations: the thought that the needs of transplantation organs are covered (odds ratio [OR] = 4.608; P = .020); being ready to accept a liver from a LLD (OR = 3.125; P = .038); discussion with the family about the subject of donation and transplantation (OR = 3.215; P = .003); and not belonging to any doctrine or religious belief (OR = 11.363; P = .039). CONCLUSIONS In this study 91% of nursing students were in favor of living organ donation.
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Affiliation(s)
- M Mikla
- Department of Nursing, University of Murcia, Spain; International Collaborative Donor Project ("Project Collaborative International Donor"), Murcia, Spain; Hospital General Universitario Reina Sofia, Murcia, Spain.
| | - A Rios
- International Collaborative Donor Project ("Project Collaborative International Donor"), Murcia, Spain; Department of Surgery, Paediatrics, Obstetrics and Gynaecology, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, Instituto Murciano de Investigación Biomédica, Clinical Hospital Universitario Virgen de la Arrixaca, Murcia, Spain; Regional Transplant Center, Department of Health and Consumer Affairs in the Region of Murcia, Murcia, Spain.
| | - A Lopez-Navas
- International Collaborative Donor Project ("Project Collaborative International Donor"), Murcia, Spain; Department of Surgery, Paediatrics, Obstetrics and Gynaecology, University of Murcia, Murcia, Spain; Department of Psychology, Catholic University San Antonio, Universidad Catolica San Antonio de Murcia, Murcia, Spain
| | - A Andruszkiewicz
- Faculty of Health Sciences, Nicolaus Copernicus University, Medical College, Bydgoszcz, Poland
| | - M Felsmann
- Faculty of Health Sciences, Nicolaus Copernicus University, Medical College, Bydgoszcz, Poland
| | - L Martinez-Alarcón
- International Collaborative Donor Project ("Project Collaborative International Donor"), Murcia, Spain; Department of Surgery, Paediatrics, Obstetrics and Gynaecology, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, Instituto Murciano de Investigación Biomédica, Clinical Hospital Universitario Virgen de la Arrixaca, Murcia, Spain; Regional Transplant Center, Department of Health and Consumer Affairs in the Region of Murcia, Murcia, Spain
| | - G Ramis
- Faculty of Veterinary, University of Murcia, Murcia, Spain
| | - P Ramirez
- Department of Surgery, Paediatrics, Obstetrics and Gynaecology, University of Murcia, Murcia, Spain; Transplant Unit, Surgery Service, Instituto Murciano de Investigación Biomédica, Clinical Hospital Universitario Virgen de la Arrixaca, Murcia, Spain; Regional Transplant Center, Department of Health and Consumer Affairs in the Region of Murcia, Murcia, Spain
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Rios A, Lopez-Navas A, Fernández-Olivares P, Martinez-Alarcón L, Mikla M, Ramis G, Ramirez P, Parrilla P. Attitudes Toward Living Donation in the Bolivian Population Residing in Spain. Transplant Proc 2015; 47:2597-9. [DOI: 10.1016/j.transproceed.2015.10.011] [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] [Received: 08/19/2015] [Revised: 10/03/2015] [Accepted: 10/07/2015] [Indexed: 10/22/2022]
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17
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Mikla M, Rios A, Lopez-Navas A, Gotlib J, Kilanska D, Martinez-Alarcón L, Ramis G, Ramirez P, Lopez Montesinos M. Factors Affecting Attitude Toward Organ Donation Among Nursing Students in Warsaw, Poland. Transplant Proc 2015; 47:2590-2. [DOI: 10.1016/j.transproceed.2015.09.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Accepted: 09/17/2015] [Indexed: 11/25/2022]
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18
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Mikla M, Rios A, Lopez-Navas A, Dobrowolska B, Kilanska D, Martinez-Alarcon L, Ramis G, Ramirez P, Lopez Montesinos M. Attitude of Nursing Students at the University of Lublin in Poland Toward Xenotransplantation of Organs. Transplant Proc 2015; 47:2593-6. [DOI: 10.1016/j.transproceed.2015.10.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 10/03/2015] [Accepted: 10/07/2015] [Indexed: 01/02/2023]
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Rodríguez Fernández JM, Montserrat E, Rozman C, Rios A, Vallespí MT, González Aza C, Alcalá A, Gutiérrez M, Morey M, Brugués R. Sequential bone marrow biopsy in chronic lymphocytic leukaemia. Bibl Haematol 2015:81-6. [PMID: 6466285 DOI: 10.1159/000409645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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21
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Somà V, Rios A. Nucleon mean-free path in the medium. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146603081] [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: 11/14/2022] Open
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Marin-Muller C, Rios A, Anderson D, Siwak E, Yao Q. Complete and repeatable inactivation of HIV-1 viral particles in suspension using a photo-labeled non-nucleoside reverse transcriptase inhibitor. J Virol Methods 2013; 189:125-8. [PMID: 23384676 DOI: 10.1016/j.jviromet.2013.01.016] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 01/23/2013] [Accepted: 01/28/2013] [Indexed: 11/30/2022]
Abstract
A method is described for achieving repeatable, complete inactivation of HIV, based on photo-inactivation of HIV reverse transcriptase (RT) with a non-nucleoside reverse transcriptase inhibitor (NNRTI), photoactive 4-[[4-[(4-azido-2,6-dimethylphenyl) amino]-2-pyrimidinyl]amino]benzonitrile (PA-DAPYa). These results show that PA-DAPYa inactivated completely a suspension of cell-free HIV-1 viral particles in a dose and time-dependent manner. Using an ELISA assay for p24, it is demonstrated that a 500nM concentration of PA-DAPYa is able to inactivate 500 TCID50 of HIV viral particles in suspension when irradiated with non-microbicidal wavelength UV light for 30min. No active p24 was detected on days 7, 14, and 21 days after culturing the inactivated HIV in peripheral blood mononuclear cells (PBMCs). Several batches of large quantities of HIV viral particles were demonstrated to be inactivated completely and repeatedly by this method. Therefore, a reliable method has been developed to inactivate HIV viral particles in a reproducible manner using an optimal concentration of PA-DAPYa and duration of UV exposure time of the treated particles. The inactivation of viral particles in suspension allows for large-scale production of an injectable formulation of inactivated HIV viral particles for vaccine development which should preserve the conformational and antigenic integrity of viral surface proteins.
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Affiliation(s)
- C Marin-Muller
- Molecular Surgeon Research Center, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, United States
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23
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Goddard PM, Stevenson PD, Rios A. Charge radius isotope shift across the N=126 shell gap. Phys Rev Lett 2013; 110:032503. [PMID: 23373916 DOI: 10.1103/physrevlett.110.032503] [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] [Received: 10/09/2012] [Revised: 11/26/2012] [Indexed: 06/01/2023]
Abstract
We revisit the problem of the kink in the charge radius shift of neutron-rich even isotopes near the N=126 shell closure. We show that the ability of a Skyrme force to reproduce the isotope shift is determined by the occupation of the neutron 1i(11/2) orbital beyond N=126 and the corresponding change it causes to deeply-bound protons orbitals with a principal quantum number of 1. Given the observed position of the single-particle energies, one must either ensure occupation is allowed through correlations, or not demand that the single-particle energies agree with experimental values at the mean-field level.
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Affiliation(s)
- P M Goddard
- Department of Physics, University of Surrey, Guildford, United Kingdom
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24
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Bouri M, Salghi R, Bazzi L, Zarrouk A, Rios A, Zougagh M. Pesticide residue levels in green beans cultivated in Souss Masa valley (Morocco) after multiple applications of bifenthrin and λ-cyhalothrin. Bull Environ Contam Toxicol 2012; 89:638-643. [PMID: 22782357 DOI: 10.1007/s00128-012-0722-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Accepted: 06/29/2012] [Indexed: 06/01/2023]
Abstract
Dissipation of bifenthrin and λ-cyhalothrin pyrethroid insecticides, under environmental conditions, was evaluated on green beans grown in experimental greenhouses (Souss Massa valley, Morocco). Pesticide residues were determined by gas chromatography with micro electron-capture detector (GC-μECD) after dichloromethane extraction and cleanup on florisil phase cartridges. In the case of field experiments, a random block scheme was employed. Each block contained 25 plants in a single row and tests were carried out in triplicates applying pesticides at the recommended doses by the manufacturers. Fruit samples were periodically taken until the end of the preharvest interval (p.i.). The results obtained showed that the p.i of bifenthrin in green bean were 4 days in the winter and 3.5 days in the spring, whereas that for λ-cyhalothrin 8 days was found in the winter and 7.5 days in the spring. Consequently, it is possible to consider the European Union maximum residue limit (EU MRL) values compatible with the proper agricultural practices used for growing green bean in the plastic greenhouse of Souss Massa valley in South Morocco. Bifenthrin had a degradation of first-order kinetics, whereas that of levels for λ-cyhalothrin residue can not be interpreted by the use of a first order model.
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Affiliation(s)
- M Bouri
- Equipe de Genie de l'Environnement et de Biotechnologie, Ecole Nationale des Sciences Appliquees, B.P 1136, Agadir, Morocco
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Rios A, Carbone A, Polls A, Vidaña I. Liquid-gas phase transition in nuclear matter: Mean-field and beyond. EPJ Web of Conferences 2012. [DOI: 10.1051/epjconf/20123100003] [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: 11/14/2022] Open
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González M, Ramírez P, Cascales P, Domingo J, López M, Rios A, Sánchez F, Robles R, Parrilla P. Thirteen Cases of Liver-Kidney Transplantation. Transplant Proc 2010; 42:3162-3. [DOI: 10.1016/j.transproceed.2010.05.070] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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López-Navas A, Rios A, Riquelme A, Martínez-Alarcón L, Pons J, Miras M, SanMartín A, Ramírez P, Parrilla P. Importance of Introduction of a Psychological Care Unit in a Liver Transplantation Unit. Transplant Proc 2010; 42:302-5. [DOI: 10.1016/j.transproceed.2009.11.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Martínez-Alarcón L, Rios A, Ramírez P, Parrilla P. Would patients with hepatitis C virus on the waiting list for a liver transplant accept a hepatitis C-positive organ? Transpl Infect Dis 2009; 11:475-6. [DOI: 10.1111/j.1399-3062.2009.00437.x] [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: 10/20/2022]
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Cosio BG, Iglesias A, Rios A, Noguera A, Sala E, Ito K, Barnes PJ, Agusti A. Low-dose theophylline enhances the anti-inflammatory effects of steroids during exacerbations of COPD. Thorax 2009; 64:424-9. [PMID: 19158122 DOI: 10.1136/thx.2008.103432] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD) is characterised by an abnormal inflammatory response mainly to cigarette smoke that flares up during exacerbations of the disease (ECOPD). Reduced activity of histone deacetylases (HDAC) contributes to enhanced inflammation in stable COPD. It was hypothesised that HDAC activity is further reduced during ECOPD and that theophylline, an HDAC activator, potentiates the anti-inflammatory effect of steroids in these patients. A study was performed to investigate HDAC activity during ECOPD and the effects of theophylline on the anti-inflammatory effects of steroids in a randomised single-blind controlled study. METHODS 35 patients hospitalised with ECOPD and treated according to international guidelines (including systemic steroids) were randomised to receive or not to receive low-dose oral theophylline (100 mg twice daily). Before treatment and 3 months after discharge, HDAC and nuclear factor-kappaB (NF-kappaB) activity in sputum macrophages, the concentration of nitric oxide in exhaled air (eNO) and total antioxidant status (TAS), tumour necrosis factor alpha (TNFalpha), interleukin (IL)-6 and IL8 levels in sputum supernatants were measured. RESULTS Patients receiving standard therapy showed decreased NF-kappaB activity, eNO concentration and sputum levels of TNFalpha, IL6 and IL8, as well as increased TAS during recovery of ECOPD, but HDAC activity did not change. The addition of low-dose theophylline increased HDAC activity and further reduced IL8 and TNFalpha concentrations. CONCLUSIONS During ECOPD, low-dose theophylline increases HDAC activity and improves the anti-inflammatory effects of steroids. TRIAL REGISTRATION NUMBER NCT00671151.
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Affiliation(s)
- B G Cosio
- Department of Respiratory Medicine, Hospital Universitario Son Dureta, Palma de Mallorca, Spain.
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Zougagh M, Bouabdallah M, Salghi R, Hormatallah A, Rios A. Supercritical fluid extraction as an on-line clean-up technique for rapid amperometric screening and alternative liquid chromatography for confirmation of paraquat and diquat in olive oil samples. J Chromatogr A 2008; 1204:56-61. [PMID: 18703198 DOI: 10.1016/j.chroma.2008.07.087] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2008] [Revised: 07/15/2008] [Accepted: 07/22/2008] [Indexed: 10/21/2022]
Abstract
A rapid and simple method for the direct screening of paraquat (PQ) and diquat (DQ) in olive oil samples is proposed. The sample screening method involves supercritical fluid extraction (SFE) (clean-up followed by the extraction of the analytes) followed by continuous flow electrochemical detection. Those samples for which the total concentration is close to or above the threshold limit established by the Columbian Society for Social Protection (0.05 microg g(-1)) are subsequently analyzed by liquid chromatography (LC) with diode array detection (DAD). This confirmation method allows the determination of PQ and DQ in the range between 0.04 and 1.0 microg g(-1), with average relative standard deviations lower than 3.5%, and 0.003 and 0.002 microg g(-1) detection limits for PQ and DQ, respectively. The proposed arrangement opens up interesting prospects for the direct determination of polar pesticides in complex samples with a good throughput and a high level of automation.
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Affiliation(s)
- M Zougagh
- Department of Analytical Chemistry and Food Technology, Faculty of Chemistry, University of Castilla-La Mancha, Av. Camilo José Cela s/n, Ciudad Real, Spain
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Rios A, Martinez-Alarcon L, Sanchez J, Jarvis N, Garcia JA, Rodriguez JM, Parrilla P, Ramirez P. The quest for favourable subgroups to encourage living kidney donation in Spain. An attitudinal study among British and Irish citizens resident in southeastern Spain. Nephrol Dial Transplant 2008; 23:1720-7. [DOI: 10.1093/ndt/gfm844] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Hernández-Ramírez VI, Rios A, Angel A, Magos MA, Pérez-Castillo L, Rosales-Encina JL, Castillo-Henkel E, Talamás-Rohana P. Subcellular distribution of theEntamoeba histolytica140 kDa FN-binding molecule during host-parasite interaction. Parasitology 2006; 134:169-77. [PMID: 17076927 DOI: 10.1017/s0031182006001260] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2006] [Revised: 07/04/2006] [Accepted: 07/05/2006] [Indexed: 11/06/2022]
Abstract
Entamoeba histolyticatrophozoites recovered from the host-parasite interface during abscess development obtain different stimuli compared with long-term cultured cells. In order to have a better understanding about the mechanisms in which the 140 kDa fibronectin (FN)-binding molecule (EhFNR) is involved during the invasive process, we decided to compare the regulation process of this molecule among long-term cultured trophozoites, FN-stimulated trophozoites, and trophozoites recently recovered from a liver abscess. A cDNA clone (5A) containing a fragment of theEhFNR that shows identity to the C-terminal region of the intermediate galactose lectin subunit Igl, was selected with a mAb (3C10). Identity ofEhFNR with Igl was confirmed by immunoprecipitation with 3C10 and EH3015 (against the Gal/GalNAc intermediate subunit) mAbs. The 3C10 mAb was used as a tool to explore the modulation of the amoebic receptor (EhFNR). Our results showed specific regulation of theEhFNR in FN-interacted amoebas, as well as in trophozoites recovered at different stages of abscess development. This regulation involved mobilization of the receptor molecule from internal vesicles to the plasma membrane. Therefore, we suggest that in the host-parasite interface, theEhFNR (Igl) plays an important role in the adhesion process during abscess development.
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Affiliation(s)
- V I Hernández-Ramírez
- Superior School of Medicine, IPN, Plan de San Luis y Díaz Mirón, Col. Casco de Sto. Tomás México, D.F., 11340, México
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Presant CA, Kelly C, Bosserman L, Upadhyaya G, Vakil M, Horns R, Ebrahimi B, Yeon C, Howard F, Rios A. Aromatase inhibitor (AI)-associated arthralgia (A) and bone pain (BP): Frequency and characterization in clinical practice. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.6137] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
6137 Background: Prior studies of AI have identified A and/or BP as side effects. Reported incidences have varied from 4% (IMPACT) to 35.6% (ATAC). In order to determine the frequency of A or BP in clinical practice, we reviewed a consecutive series of patients (PTs) receiving AI in community cancer centers. Methods: The charts of consecutive PTs receiving AI were reviewed, and PTs were interviewed regarding the occurrence of A or BP (ABP), severity, whether ABP was worse than before AI therapy, preexisting co-morbidities, type of therapy for ABP, and pain characterization. Results: 56 PTs were receiving AI. The type of AI used was anastrazole in 44 PTs, letrozole in 10 PTs, and exemestane in 2 PTs. The age range was 45 to 89 years. All PTs had breast cancer. The duration AI usage was 1 to 44 mo. Worsening of ABP compared to pretreatment ABP was reported in 34 PTs (61%). In 11 Pts (20%), severity was sufficient and control poor enough to result in discontinuation of AI at a median of 2 mo of AI therapy. The median severity of ABP, when present, was 7.5 on a 10 point pain scale. The character of the ABP was continuous in 20 (59%) and intermittent in 14 (41%), affected central/axial bones in 20 (36%), and peripheral bones in 35 (64%). Coexisting conditions possibly contributing to worsening of ABP occurred in 36%, consisting of degenerative joint disease 10, fibromyalgia 1, osteoporosis 4, and degenerative disc disease 1. Therapy associated with amelioration of symptoms included acetaminophen in 26%, NSAIDs in 45%, mild opiates in 11%, strong opiates in 5%, and glucosamine in 13%. The occurrence of ABP was not associated with age (68% in PTs less than 60 versus 57% in PTs over 60). The occurrence of ABP was not associated with duration of use of AI (50% of 16 Pts on AI for 3–6 mo, 75% for 7–12 mo, and 56% for over 12 mo). Conclusions: The occurrence of AI associated ABP is higher in a non-clinical trial population of PTs than reported in most clinical trials. This side effect is severe enough to cause discontinuation of needed AI therapy in 20%. Further studies are warranted to determine the mechanism of AI associated ABP, and optimal therapy. It is reasonable to consider glucosamine as well as standard analgesics in controlling this syndrome. No significant financial relationships to disclose.
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Affiliation(s)
| | - C. Kelly
- Wilshire Oncology Medical Group, LaVerne, CA
| | | | | | - M. Vakil
- Wilshire Oncology Medical Group, LaVerne, CA
| | - R. Horns
- Wilshire Oncology Medical Group, LaVerne, CA
| | - B. Ebrahimi
- Wilshire Oncology Medical Group, LaVerne, CA
| | - C. Yeon
- Wilshire Oncology Medical Group, LaVerne, CA
| | - F. Howard
- Wilshire Oncology Medical Group, LaVerne, CA
| | - A. Rios
- Wilshire Oncology Medical Group, LaVerne, CA
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De La Fuente L, Campbell DE, Rios A, Grieg A, Graff M, Brion LP. Frequency analysis of air and skin temperature in neonates in servo-controlled incubators. J Perinatol 2006; 26:301-5. [PMID: 16554848 DOI: 10.1038/sj.jp.7211491] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE To test a new system designed for digital recording of skin and air temperature, thereby allowing analysis of cyclic changes in temperature in neonates in servo-controlled incubators. METHODS Analysis of cyclic changes of serial skin and air temperature in asymptomatic infants in servo-controlled incubators adjusting heat output to the patient's temperature. RESULTS In nine asymptomatic neonates ranging from 25 to 40 weeks of gestational age, analysis showed peaks of coherence (squared correlation) between skin and air temperature measurements at periods ranging between 1.5 and 3 h. CONCLUSION We have established a new system to study cyclic changes in skin and air temperature in neonates in servo-controlled incubators. The analysis of this pilot study suggests that the most important changes in skin and air temperature in asymptomatic neonates occur at a periodicity of 1.5 to 3 h, which is similar to that previously described for neonatal temperature. Additional data are required to determine whether this new system may be useful in neonatal care.
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Affiliation(s)
- L De La Fuente
- Department of Pediatrics, Section of Neonatology, Albert Einstein College of Medicine, Children's Hospital at Montefiore, Bronx, NY 10461, USA
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Malyukova I, Birukova AA, Rios A, Birukov KG. 35 OXIDIZED PHOSPHOLIPIDS MEDIATE INTERACTION BETWEEN ADHERENCE JUNCTION AND FOCAL ADHESION PROTEINS. J Investig Med 2006. [DOI: 10.2310/6650.2005.x0015.34] [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: 11/18/2022]
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Ortiz J, Romero N, Robert P, Araya J, Lopez-Hernández J, Bozzo C, Navarrete E, Osorio A, Rios A. Dietary fiber, amino acid, fatty acid and tocopherol contents of the edible seaweeds Ulva lactuca and Durvillaea antarctica. Food Chem 2006. [DOI: 10.1016/j.foodchem.2005.07.027] [Citation(s) in RCA: 313] [Impact Index Per Article: 17.4] [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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Torregrosa NM, Rodríguez JM, Llorente S, Balsalobre MD, Rios A, Jimeno L, Parrilla P. Definitive treatment for persistent hypoparathyroidism in a kidney transplant patient: parathyroid allotransplantation. Thyroid 2005; 15:1299-302. [PMID: 16356096 DOI: 10.1089/thy.2005.15.1299] [Citation(s) in RCA: 20] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Post-surgical hypocalcemia is usually a transitory complication in thyroid and parathyroid surgery that can be resolved quickly, although it becomes a delicate matter when the problem persists. Parathyroid transplantation is the choice of treatment; however, the associated immunosuppression can cause side effects. The following case study shows the transplantation of parathyroid tissue from a patient with secondary hyperparathyroidism to another kidney transplant patient with severe hypocalcemia that was medically intractable. The graft is functioning after 2 years.
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Affiliation(s)
- N M Torregrosa
- Department of General Surgery and Nephrology, Hospital Universitario Virgen de la Arrixaca, Murcia, Spain
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Munitiz V, Rios A, Canovas J, Ferri B, Sola J, Canovas P, Illana J, Parrilla P. Primitive leiomyosarcoma of the breast: case report and review of the literature. Breast 2004; 13:72-6. [PMID: 14759721 DOI: 10.1016/j.breast.2003.09.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [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: 05/12/2003] [Revised: 08/14/2003] [Accepted: 09/10/2003] [Indexed: 11/23/2022] Open
Abstract
Sarcomas of the breast account for under 1% of breast tumours. Leiomyosarcomas are less common, being a subgroup of sarcomas of the breast. Only 23 cases with immunohistochemical or electron microscopy confirmation are reported in the literature. The case of a 58-year-old woman with a leiomyosarcoma 4 cm in diameter in the upper external quadrant of the right breast is presented. Mammography and sonography were compatible with a fibroadenoma or phylloides tumour, and fine-needle aspiration (FNA) suggested medullary carcinoma. The patient underwent a Madden-type modified radical mastectomy and axillary lymphadenectomy. Adjuvant chemotherapy was implemented with Adriamycin (four cycles of 21 days). One year after surgery the patient is tumour free.
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Affiliation(s)
- V Munitiz
- Department of Surgery, Virgen de la Arrixaca University Hospital, Servicio de Cirugia General, 3a planta Ctra. Cartagena s/n, 30120 El Palmar (Murcia), Spain.
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Cabezuelo JB, Ramirez P, Acosta F, Torres D, Sansano T, Pons JA, Bru M, Montoya M, Rios A, Sánchez Bueno F, Robles R, Parrilla P. Does the standard vs piggyback surgical technique affect the development of early acute renal failure after orthotopic liver transplantation? Transplant Proc 2003; 35:1913-4. [PMID: 12962846 DOI: 10.1016/s0041-1345(03)00598-0] [Citation(s) in RCA: 66] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The objective of this study was to evaluate the effect of the surgical technique on postoperative renal function during the first week after liver transplantation (OLT). We performed a retrospective study of 184 consecutive OLT. Criteria for acute renal failure were: serum creatinine >1.5 mg/dL, an increase by 50% in the baseline serum creatinine, or oliguria requiring renal replacement therapy. The distribution of patients according to the surgical technique was: standard (n=84), venovenous bypass (n=20), and piggyback (n=80). Other variables analyzed were: intraoperative requirement for blood products, treatment with adrenergic agonists, intraoperative complications, and postreperfusion syndrome. Univariate analysis showed the following parameters to be significantly related to postoperative renal failure: intraoperative fresh frozen plasma and cryoprecipitate requirements, intraoperative complications, postreperfusion syndrome, need for noradrenaline or dobutamine, standard surgical technique versus piggyback (39% vs 18%, P<.01) and venovenous vs piggyback (50% vs 18%, P<.01). Logistic regression analysis identified the following variables as having independent prognostic value: (1) Standard surgical technique vs piggyback (OR=3.3, P=.01); (2) venovenous vs piggyback (OR=4.7, P=.02); and (3) >20 U cryoprecipitate requirement (OR=1.04, P=.01). In conclusion, compared with the piggyback technique, the standard surgical technique appears to be an independent risk factor for postoperative acute renal failure. When venovenous bypass is used in patients who do not tolerate trial clamping of inferior vena cava, it does not reduce the incidence of postoperative renal failure. Finally, the piggyback technique significantly reduces the probability of acute renal failure after liver transplantation.
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Affiliation(s)
- J B Cabezuelo
- Liver Transplant Unit, University Hospital V. Arrixaca, Murcia, Spain
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Ramirez P, Chavez R, Majado M, Munitiz V, Muñoz A, Hernandez O, Palenciano CG, Pino-Chavez G, Loba M, Minguela A, Yelamos J, Gago MR, Vizcaino AS, Asensi H, Cayuela M, Segura B, Marin F, Rubio A, Fuente T, Robles R, Bueno FS, Sansano T, Acosta F, Rodriguez JM, Rios A, Montoya M, Navarro F, Cabezuelo J, Cozzi E, White DJG, Parrilla P. Transgenic pig-to-baboon liver xenotransplantation: clinical, biochemical, and immunologic pattern of delayed acute vascular rejection. Transplant Proc 2002; 34:319-20. [PMID: 11959306 DOI: 10.1016/s0041-1345(01)02834-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- P Ramirez
- Liver Transplant Unit, Department of Surgery, University Hospital Virgen Arrixaca, Murcia, Spain.
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Palenciano CG, Segura B, Ramirez P, Chavez R, Munitiz V, Cayuela MG, Acosta F, Sansano T, Majado M, Muñoz A, Hernandez O, Pino-Chavez G, Loba M, Yelamos J, Gago MR, Vizcaino AS, Asensi H, Marin F, Rubio A, Fuente T, Rios A, Montoya M, Robles R, Bueno FS, Rodriguez JM, Navarro F, Cabezuelo J, Cozzi E, White DJG, Parrilla P. Acid-base and electrolyte disturbances in an experimental model of orthotopic liver xenotransplantation from pig to baboon after graft reperfusion: differences between h-DAF livers and unmodified livers. Transplant Proc 2002; 34:325-6. [PMID: 11959309 DOI: 10.1016/s0041-1345(01)02784-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- C G Palenciano
- Liver Transplant Unit, University Hospital V. Arrixaca, El Palmar, Murcia, Spain
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Abstract
This study was designed to determine whether respiratory mechanics in stable, very low birth weight infants changed after replacing intermittent feeds with continuous feeding. We measured static respiratory system compliance, respiratory system resistance, functional residual capacity (FRC), and tidal volume immediately before feeds and at 20, 60, and 120 min after feeds, and again the next day on continuous feeds. Patients selected for enrollment into the study needed to fulfill the following criteria: 1) birth weight and postnatal weight < 1,500 g, 2) no need for mechanical ventilation, positive airway pressure, or supplemental oxygen, 3) receiving and tolerating at least 100 mL/kg/day of intermittent gavage feeds, and 4) no change in methylxanthine or diuretic dosage for 3 days before the study. Respiratory mechanics were measured using the SensorMedics 2600 Pediatric Pulmonary Cart (Yorba Linda, CA). We studied 16 infants (gestational age 28.3 +/- 3.7 weeks, mean +/- SD) at a postnatal age of 10-82 days. The average interindividual coefficient of variance was 20 +/- 2% for static compliance, 35 +/- 6% for resistance, 18 +/- 3% for FRC, and 19 +/- 3% for tidal volume. Repeated-measures analysis of variance did not reveal any significant difference in respiratory mechanics with intermittent vs. continuous feeding. The data suggest that static respiratory mechanics in stable, very low birth weight infants are not affected by changing enteral feeds from intermittent gavage to a continuous schedule.
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Affiliation(s)
- G Brar
- Division of Neonatology, Department of Pediatrics, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York 10461, USA
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Abstract
A 2-year-old, intact female rottweiler was presented for signs of lethargy. A mass was ultrasonographically observed, cranial and lateral to the left kidney. Exploratory laparotomy revealed a mass in the left ovary that was diagnosed histopathologically as an ovarian dysgerminoma. Two weeks after surgery, the dog was readmitted with signs of peripheral vestibular disease that progressed to central vestibular disease. Magnetic resonance imaging of the brain revealed the presence of a mass in the caudal fossa. The histopathological diagnosis of the mass was metastases from the ovarian dysgerminoma.
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Rios A, Rodriguez JM, Munitiz V, Alcaraz P, Pérez D, Parrilla P. Factors that affect recurrence after incisional herniorrhaphy with prosthetic material. Eur J Surg 2001; 167:855-9. [PMID: 11848241 DOI: 10.1080/11024150152717706] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
OBJECTIVE To evaluate the risk factors for recurrence after prosthetic incisional herniorrhaphy. DESIGN Retrospective study. SETTING Tertiary referral centre, Spain. PATIENTS 246 patients who had incisional herniorrhaphy with a prosthetic material (polypropylene) between 1990 and 1997 INTERVENTIONS A reinforcement mesh was inserted when the hernia was more than 5 cm. In incisional hernias less than 5 cm the reinforcement mesh was inserted when the repair was under tension or when tissues were noted to be weak during the operation. MAIN OUTCOME MEASURES Age, sex, obesity, the presence of bronchial disease, previous repair of the incisional hernia, type of surgery, size and site of hernia and presence of local complications during the immediate postoperative period. RESULTS Mean (SD) follow-up was 77 (6) months (minimum follow up two years). The hernia recurred in 43 cases (17%) (mean time of recurrence 10 (8) months). Age over 60 years, previous herniorrhaphy, size of hernia, and postoperative local complications were significant risk factors (p < 0.01) in both the univariate and multivariate analyses. CONCLUSIONS Patients at the greater risk of recurrence are those aged over 60 years, with large, recurrent hernias and who develop local complications during the postoperative period.
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Affiliation(s)
- A Rios
- Departamento de Cirugía General y del Aparato Digestivo I, Hospital Universitario Virgen de la Arrixaca, El Palmar, Murcia, Spain
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Rios A, Fernandez JA, Rodríguez JM, Lujan JA, Martínez E, Parrilla P. Massive upper gastrointestinal bleeding as a manifestation of somatostatinoma of the ampulla of vater. Dig Dis Sci 2001; 46:2162-5. [PMID: 11680591 DOI: 10.1023/a:1011954713463] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Affiliation(s)
- A Rios
- Department of General Surgery and Digestive Apparatus I, Virgen de la Arrixaca University Hospital, Murcia, Spain
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Affiliation(s)
- A Rios
- Department of Chemistry, University at Buffalo SUNY, Buffalo New York 14260-3000, USA
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Johnson KA, Lopera F, Jones K, Becker A, Sperling R, Hilson J, Londono J, Siegert I, Arcos M, Moreno S, Madrigal L, Ossa J, Pineda N, Ardila A, Roselli M, Albert MS, Kosik KS, Rios A. Presenilin-1-associated abnormalities in regional cerebral perfusion. Neurology 2001; 56:1545-51. [PMID: 11402113 DOI: 10.1212/wnl.56.11.1545] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To investigate the influence of the presenilin-1 gene (PS-1) mutation on regional cerebral perfusion, SPECT was evaluated in 57 individuals. The subjects were members of a large pedigree from Colombia, South America, many of whom carry a PS-1 mutation for early-onset AD. METHODS Members of this large kindred who were cognitively normal and did not carry the PS-1 mutation (n = 23) were compared with subjects who were carriers of the mutation but were asymptomatic (n = 18) and with individuals with the mutation and a clinical diagnosis of AD (n = 16). Cerebral perfusion was measured in each subject using hexamethylpropyleneamine oxime SPECT. The data were analyzed in two ways: 1) Mean cerebral perfusion in each of 4320 voxels in the brain was compared among the groups using t-tests (t-maps); and 2) each individual received a weighted score on 20 vectors (factors), based on a large normative sample (n = 200), using a method known as singular value decomposition (SVD). RESULTS Based on t-maps, subjects with the PS-1 mutation who were asymptomatic demonstrated reduced perfusion in comparison with the normal control subjects in the hippocampal complex, anterior and posterior cingulate, posterior parietal lobe, and anterior frontal lobe. The AD patients demonstrated decreased perfusion in the posterior parietal and superior frontal cortex in comparison with the normal control subjects. Discriminant function analysis of the vector scores derived from SVD (adjusted for age and gender) accurately discriminated 86% of the subjects in the three groups (p < 0.0005). CONCLUSION Regional cerebral perfusion abnormalities based on SPECT are detectable before development of the clinical symptoms of AD in carriers of the PS-1 mutation.
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Affiliation(s)
- K A Johnson
- Radiology and Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
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Ortiz S, Rodríguez JM, Parrilla P, Pérez D, Moreno-Gallego A, Rios A, Soria T. Recurrent papillary thyroid cancer: analysis of prognostic factors including the histological variant. Eur J Surg 2001; 167:406-12. [PMID: 11471663 DOI: 10.1080/110241501750243734] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
OBJECTIVE To analyse the factors that influence the development of recurrent papillary thyroid carcinoma, including the histological variant. DESIGN Retrospective study. SETTING Teaching hospital, Spain. SUBJECTS 200 patients who had papillary thyroid cancers resected between 1970 and 1995. MAIN OUTCOME MEASURES Prognostic factors and disease-free interval assessed by univariate and multivariate analysis. RESULTS All patients were followed up for a mean of 9 years (range 4-29). 54 patients presented with recurrent disease (27%) of whom 19 (35%) died of their disease. 5-year, 10-year, and 15-year survival for those with recurrent disease were 75%, 68%, and 60%, respectively. The corresponding figures for the whole series were 93%, 90%, and 84%. The significant variables on multivariate analysis were completeness of resection (p = 0.002), extrathyroid involvement (p < 0.002), presence of lymph node metastases (p = 0.002), and histological variant of the carcinoma (P < 0.001). CONCLUSION Using these risk factors it is possible to draw up a prognostic index and classify patients as being at low, medium, or high risk of recurrence.
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Affiliation(s)
- S Ortiz
- Hospital Universitario Virgen de la Arrixaca (Murcia), Servicio de Cirugía General y Aparato Digestivo (I), El Palmar, Spain
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Sengupta K, Hernández-Ramírez VI, Rios A, Mondragón R, Talamás-Rohana P. Entamoeba histolytica: monoclonal antibody against the beta1 integrin-like molecule (140 kDa) inhibits cell adhesion to extracellular matrix components. Exp Parasitol 2001; 98:83-9. [PMID: 11465991 DOI: 10.1006/expr.2001.4621] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We describe a monoclonal antibody (3C10) against the beta1 integrin-like molecule which immunoprecipitates two polypeptides of 140 and 155 kDa from detergent-soluble extract of Entamoeba histolytica. The 140-kDa polypeptide has been described as a beta subunit of the amoebic fibronectin receptor as it is recognized by an anti-integrin beta1 (human) monoclonal antibody in immunoblot assay. The receptor molecules were localized with the 3C10 monoclonal antibody in intracellular and surface membranes of E. histolytica trophozoites by immunofluorescence and immunogold labeling methods. Significant inhibitions of cell adhesion on extracellular matrix proteins such as fibronectin (56%) (P < 0.001) and collagen (50%) (P < 0.001) and partial inhibition on laminin (23%) (P > 0.1) were achieved by the monoclonal antibody.
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Affiliation(s)
- K Sengupta
- Department of Experimental Pathology, CINVESTAV-IPN, México, DF México
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Pérez-Olmos R, Rios A, Fernández JR, Lapa RA, Lima JL. Construction and evaluation of ion selective electrodes for nitrate with a summing operational amplifier. Application to tobacco analysis. Talanta 2001; 53:741-748. [PMID: 18968163] [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] [Received: 03/03/2000] [Revised: 07/10/2000] [Accepted: 07/25/2000] [Indexed: 05/27/2023]
Abstract
In this paper, the construction and evaluation of an electrode selective to nitrate with improved sensitivity, constructed like a conventional electrode (ISE) but using an operational amplifier to sum the potentials supplied by four membranes (ESOA) is described. The two types of electrodes, without an inner reference solution, were constructed using tetraoctylammonium bromide as sensor, dibutylphthalate as solvent mediator and PVC as plastic matrix, the membranes obtained directly applied onto a conductive epoxy resin support. After the comparative evaluation of their working characteristics they were used in the determination of nitrate in different types of tobacco. The limit of detection of the direct potentiometric method developed was found to be 0.18 g kg(-1) and the precision and accuracy of the method, when applied to eight different samples of tobacco, expressed in terms of mean R.S.D. and average percentage of spike recovery was 0.6 and 100.3%, respectively. The comparison of variances showed, on all ocassions, that the results obtained by the ESOA were similar to those obtained by the conventional ISE, but with higher precision. Linear regression analysis showed good agreement (r=0.9994) between the results obtained by the developed potentiometric method and those of a spectrophotometric method based on brucine, adopted as reference method, when applied simultaneously to 32 samples of different types of tobacco.
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Affiliation(s)
- R Pérez-Olmos
- Departamento de Quimica Analitica, Escuela Universitaria de Ingenieria Técnica Industrial, Plaza de la Casilla No. 3, 48012 Bilbao, Spain
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