183 results on '"Gomez MR"'
Search Results
2. Dialoghi dall’altrove. Qualche nota storica sull’antropologia sociale britannica.
- Author
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D’Agostino, G, Matera, V, Rimoldi, L, Gardini, M, Aria, M, Bassi, M, Dei, F, García Castaño, FJ, Gomez, MR, Calabresi, G, Saraiva, C, Pussetti, C, Pozzi, G, Ligi, G, Scarduelli, P, Bellagamba, A, Allovio, S, Biscaldi, A, Palumbo, B, Ribeiro Corossacz, V, Mancuso, A, Lupo, A, Roncaglia, S, Bougleux, E, Tamisari, F, Di Rosa, D, Favole, A, Malighetti, R, Maffi, I, Rimoldi L., Gardini M., D’Agostino, G, Matera, V, Rimoldi, L, Gardini, M, Aria, M, Bassi, M, Dei, F, García Castaño, FJ, Gomez, MR, Calabresi, G, Saraiva, C, Pussetti, C, Pozzi, G, Ligi, G, Scarduelli, P, Bellagamba, A, Allovio, S, Biscaldi, A, Palumbo, B, Ribeiro Corossacz, V, Mancuso, A, Lupo, A, Roncaglia, S, Bougleux, E, Tamisari, F, Di Rosa, D, Favole, A, Malighetti, R, Maffi, I, Rimoldi L., and Gardini M.
- Abstract
Salvo qualche importante eccezione (tra gli altri, Gaillard 1997; Vermeulen, Roldàn 1995), almeno fino agli inizi del XXI secolo le opere che hanno trattato di storia dell’antropologia si sono concentrate quasi esclusivamente sulle tradizioni discipli- nari delle principali potenze vincitrici delle due Guerre Mondiali: Gran Bretagna, Francia e Stati Uniti. Le ragioni sono molte: come è noto, gli sviluppi dell’antropo- logia in altri Paesi occidentali, che pure avevano possedimenti coloniali o li avevano avuti, furono spesso soffocati dall’emergere dei totalitarismi e trovarono un terreno fertile di rinascita solo durante e dopo gli anni Cinquanta del Novecento. Fu poi ne- cessario attendere la decolonizzazione, e talvolta ancora più a lungo, prima di veder istituire cattedre di antropologia nelle università dei Paesi di recente indipendenza, a causa della connotazione fortemente coloniale che la disciplina aveva assunto in questi contesti. Inoltre vanno sottolineate le barriere linguistiche: pochi antropologi anglosassoni o francesi erano in grado di leggere lavori in spagnolo, portoghese, te- desco, italiano o russo e i principali testi antropologici redatti in quelle lingue furono tradotti con grande ritardo (si pensi per esempio ai lavori di de Martino).
- Published
- 2022
3. Should we seek complete liver tests normalization in primary biliary cholangitis? Data from ColHai registry
- Author
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Diaz-Gonzalez, A, Rodriguez-Tajes, S, Gomez, MV, Fabrega, E, Gomez, MR, Albillos, A, Gomez-Camarero, J, Horta, D, Gallego, A, Garcia-Retortillo, M, Andrade, RJ, Diago, M, Morillas, RM, Guerra, MH, Aracil, CF, Sala, M, Dominguez, EG, Berenguer, M, Londono, MC, and del Registro, G
- Published
- 2022
4. Tenofovir reduces the severity of COVID-19 infection in chronic hepatitis B patients
- Author
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Munoz, BM, Buti, M, Vazquez, IF, Conde, MH, Monterde, VB, Diaz, F, Morillas, R, Garcia-Buey, L, Badia-Aranda, E, Miquel, M, Amador, A, Rodriguez-Tajes, S, Merino, LR, Madejon, A, Garcia-Retortillo, M, Arenas, J, Cabezas, J, Santiago, JG, Fernandez-Rodriguez, C, Cordero, P, Diago, M, Mancebo, A, Pardo, A, Rodriguez, M, Hoyas, E, Moreno, JJ, Turnes, J, Simon, MA, Marcos-Fosch, C, Panero, JLC, Banares, R, Lens, S, Crespo, J, Gomez, MR, Rodriguez-Santiago, E, Guillen, SM, and Albillos, A
- Published
- 2021
5. Pregnancy Outcomes and SARS-CoV-2 Infection: The Spanish Obstetric Emergency Group Study
- Author
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Melguizo, SC, Conty, MLD, Payan, PC, Abascal-Saiz, A, Recarte, PP, Rodriguez, LG, Marin, CC, Varea, AM, Cuesta, ABO, Rodriguez, PP, Buhigas, IF, Gallego, MVR, Alonso, AMF, Perez, RL, Molanes, JRB, Pardilla, MBE, Gomez, MR, Gimeno, MJG, Munoz, AS, and Martinez-Perez, O
- Subjects
SARS-CoV-2 ,perinatal outcomes ,coronavirus ,maternal complications ,COVID-19 ,pregnancy ,delivery ,premature birth - Abstract
Pregnant women who are infected with SARS-CoV-2 are at an increased risk of adverse perinatal outcomes. With this study, we aimed to better understand the relationship between maternal infection and perinatal outcomes, especially preterm births, and the underlying medical and interventionist factors. This was a prospective observational study carried out in 78 centers (Spanish Obstetric Emergency Group) with a cohort of 1347 SARS-CoV-2 PCR-positive pregnant women registered consecutively between 26 February and 5 November 2020, and a concurrent sample of PCR-negative mothers. The patients' information was collected from their medical records, and the association of SARS-CoV-2 and perinatal outcomes was evaluated by univariable and multivariate analyses. The data from 1347 SARS-CoV-2-positive pregnancies were compared with those from 1607 SARS-CoV-2-negative pregnancies. Differences were observed between both groups in premature rupture of membranes (15.5% vs. 11.1%, p < 0.001); venous thrombotic events (1.5% vs. 0.2%, p < 0.001); and severe pre-eclampsia incidence (40.6 vs. 15.6%, p = 0.001), which could have been overestimated in the infected cohort due to the shared analytical signs between this hypertensive disorder and COVID-19. In addition, more preterm deliveries were observed in infected patients (11.1% vs. 5.8%, p < 0.001) mainly due to an increase in iatrogenic preterm births. The prematurity in SARS-CoV-2-affected pregnancies results from a predisposition to end the pregnancy because of maternal disease (pneumonia and pre-eclampsia, with or without COVID-19 symptoms).
- Published
- 2021
6. 488 - A NEW TPS FOR ELECTRONIC BRACHYTHERAPY CALCULATION: VALIDATION TESTS FOR GYNECOLOGICAL IMPLANTS
- Author
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Pardina, Mr Pablo Ortega, Cordero, Sergio Lozares, Lardiés, Mr Carlos Canellas, Romero, Alejandro García, Font Gómez, Mr José Antonio, and Armengol, Ms Ana Millán
- Published
- 2022
- Full Text
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7. 323 - DRIFT AND ROOM LIGHT INTENSITY EFFECT ON EXACTRAC DYNAMIC PREPOSITIONING SYSTEM: A PHANTOM STUDY
- Author
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Ruiz, Miss Marina Gutierrez, Olalla, Mr Rodrigo Astudillo, Muriedas, Mr Jorge Alonso, de la Vega, Mr Guillermo Camacho, Rivero Pérez, Miss Ana Laura, Roch, Mr Javier Albendea, Guevara, Miss Frandeína Pinto, García, Miss Verónica Cañón, Corro Verde, Mr Uriel Alexander, López, Mr Diego Bruzos, Enríquez, Mr Fernando Gómez, Rodríguez, Mr Andrés Vázquez, Arrebola, Mr Samuel Ruiz, Raba Diez, Mr J. Ignacio, Pacheco Baldor, Ms María Teresa, Prada Gómez, Mr Pedro J., and Borrás, Miss Rosa Fabregat
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- 2022
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8. 312 - SUITABILITY OF A 3D PRINTABLE MATERIAL FOR DOSIMETRIC EVALUATION OF IORT TREATMENTS
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Ruiz, Miss Marina Gutierrez, Muriedas, Mr Jorge Alonso, de la Vega, Mr Guillermo Camacho, Rivero Pérez, Miss Ana Laura, Roch, Mr Javier Albendea, Guevara, Miss Frandeína Pinto, García, Miss Verónica Cañón, Corro Verde, Mr Uriel Alexander, Molina, Miss María Ferri, Carro, Mr Juan Cardenal, Vidal, Mr Juan Pedraja, López, Mr Diego Bruzos, Enríquez, Mr Fernando Gómez, Borrás, Miss Rosa Fabregat, Rodríguez, Mr Andrés Vázquez, Raba Diez, Mr J. Ignacio, Pacheco Baldor, Ms Maria Teresa, Prada Gómez, Mr Pedro J., and Arrebola, Mr Samuel Ruiz
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- 2022
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9. 242 - COMPARISON OF TWO DOSIMETRY SYSTEMS FOR YTTRIUM-90 RADIONUCLIDE THERAPY
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Lozano Martínez, Mr Francisco Rafael, Rot San Juan, Mrs María José, Martínez Gómez, Mr Luis Carlos, and Moreno, Mrs Rosa Gilarranz
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- 2022
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10. 408 - AUTOMATED FRAMEWORK FOR NON-DESTRUCTIVE EVALUATION OF IMPLANT-ABUTMENT CONNECTION BASED ON MICRO-CT IMAGING: MICROGAP CHARACTERIZATION
- Author
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Belarra, Mr Adrian, Hernandez-Giron, Ms Irene, Cascos, Ms Rocio, Gomez, Mr Miguel, and Chevalier, Ms Margarita
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- 2022
- Full Text
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11. End-of-life care for patients hospitalised in internal medicine departments
- Author
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Diez-Manglano, J, Perez, SIDI, Gomez, MR, Formiga, F, Munoz, LAS, Herrero, JC, Vales, EC, Bonafonte, OHT, Perez, MM, Garcia, LFD, Maroto, IV, Losada, CO, Escobar, PG, Perez, CD, Granado, JC, Font, RMG, Lorente, FJJ, Vazquez, GP, Exposito, ABF, Gonzalez, MLA, Antinolo, FG, Molina, AG, Hernandez, MG, Garcia, MG, Leon, LB, Rivas, LM, Mariscal, MR, Aguirre, NG, Garcia, MPG, Algora, IM, Castel, MCB, Laiglesia, FR, Tello, EB, Garcia, JLC, Fernandez, NG, Camera, L, Gauna, C, Requejo, PA, Gutierrez, RM, Regueiro, RF, Vidal, MTS, Mejido, JA, Carus, EG, Rodriguez, CEC, Garcia, PM, Olivares, SR, Barcelo, MIF, Arencibia, CG, Vilamajo, RR, Prieto, MJM, Becerra, CG, Plata, SPAM, Chocarro, RP, Gutierrez, CD, Alvarez, FE, Balbuena, SP, Galindo, RR, Siles, MMC, Lopez, AC, Lobo, CS, Vinas, MMC, Uriel, MAC, Dominguez, JG, Gonzalez, FM, Lazaro, JMM, Gamboa, JM, Galdeano, MR, Gimenez, JC, Farre, JRB, Aragon, RN, Toran, FM, Bare, J, Farre, EG, Minana, AL, Sarabia, DM, Perez, R, Fernandez, DAI, Fernandez, JF, Salomo, AC, Qanneta, R, Ortega, MVP, Diaz, CE, Pintado, YM, Cors, MG, Rivas, MCA, Albin, DD, Morera, JR, Alvaro, NG, Parodi, AT, Sanchez, ML, Acebal, CD, Garcia, JZ, Claveras, LB, Cabanes, JM, Lazaro, IS, Romero, JB, Lopez-Alegria, LN, Lorido, JCA, Vizcaya, AML, Rodriguez, CM, Fernandez, SP, Sanchez, PS, Jimenez-Beatty, MD, Vazquez, LG, Hernando, AB, Anglada, MIG, Lorenzo, VMG, Martin, AP, Melcon, GG, Antunez, MG, Simon, MAQ, Gil, FG, Martinez, MA, Aragoneses, LM, Parra, JC, Perez, MDR, Garcia, JC, Cuesta, FL, Abad, MES, Ortega, MF, Martinez, GL, Blanco, AP, Fraile, RR, Litago, EM, Echeverria, AE, Valladares, MP, Serrano, CT, Mas, JV, Suau, OT, Tomas, EG, Rubio, RC, Zaragoza, JMM, Sanchez, PR, Herola, AG, Doblas, PPT, Encinar, JCB, Vela, EC, Carrizo, N, Galvan, VG, Villanueva, BMR, Liano, FP, and Izuel, JMP
- Subjects
Palliative sedation ,End-of-life care ,Do-not-resuscitate order ,Terminal disease ,In-hospital dying - Abstract
Objectives: To describe the care provided at the end of life for patients who die in internal medicine departments. Methods: An observational, cross-sectional, retrospective multicentre, clinical audit study was conducted where each hospital included the first 10 patients who died in the internal medicine department starting on December 1, 2015. We collected demographic and clinical data and information regarding the circumstances and care at the time of death. Results: The study included 1,447 patients with a median age of 84 years. Of these, 1,065 (74.3%) were polypathological, 751 (51.9%) were terminal and 248 (17.1%) had cancer. For the terminal patients, do-not-resuscitate orders were established for 539 (73.3%), and palliative sedation was performed for 422 (57.4%). There was no record as to whether psychological, religious or grief care was provided in 32%, 64.8% and 44.1% of the terminal patients, respectively. The patients with cancer were more often competent to make decisions (54.4% vs. 15.5%; P
- Published
- 2019
12. Discussion: International Problems of Latin America
- Author
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Hackett, Charles W., primary, Fierlinger, Zdenek, additional, Holman, Alfred, additional, Heymann, S. E., additional, Koehler, Hugo, additional, Jones, Amy H., additional, Adams, J. H., additional, de Mello Freyre, Gilberto, additional, Wallace, Benjamin B., additional, Wallace, Tom, additional, Gomez, Mr., additional, and Lindsay, Samuel McCune, additional
- Published
- 1926
- Full Text
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13. Dialoghi dall’altrove. Qualche nota storica sull’antropologia sociale britannica
- Author
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Rimoldi L., Gardini M., D’Agostino, G, Matera, V, Rimoldi, L, Gardini, M, Aria, M, Bassi, M, Dei, F, García Castaño, FJ, Gomez, MR, Calabresi, G, Saraiva, C, Pussetti, C, Pozzi, G, Ligi, G, Scarduelli, P, Bellagamba, A, Allovio, S, Biscaldi, A, Palumbo, B, Ribeiro Corossacz, V, Mancuso, A, Lupo, A, Roncaglia, S, Bougleux, E, Tamisari, F, Di Rosa, D, Favole, A, Malighetti, R, and Maffi, I
- Subjects
M-DEA/01 - DISCIPLINE DEMOETNOANTROPOLOGICHE ,Antropologia, Etnografia, Storia dell'Antropologia - Abstract
Salvo qualche importante eccezione (tra gli altri, Gaillard 1997; Vermeulen, Roldàn 1995), almeno fino agli inizi del XXI secolo le opere che hanno trattato di storia dell’antropologia si sono concentrate quasi esclusivamente sulle tradizioni discipli- nari delle principali potenze vincitrici delle due Guerre Mondiali: Gran Bretagna, Francia e Stati Uniti. Le ragioni sono molte: come è noto, gli sviluppi dell’antropo- logia in altri Paesi occidentali, che pure avevano possedimenti coloniali o li avevano avuti, furono spesso soffocati dall’emergere dei totalitarismi e trovarono un terreno fertile di rinascita solo durante e dopo gli anni Cinquanta del Novecento. Fu poi ne- cessario attendere la decolonizzazione, e talvolta ancora più a lungo, prima di veder istituire cattedre di antropologia nelle università dei Paesi di recente indipendenza, a causa della connotazione fortemente coloniale che la disciplina aveva assunto in questi contesti. Inoltre vanno sottolineate le barriere linguistiche: pochi antropologi anglosassoni o francesi erano in grado di leggere lavori in spagnolo, portoghese, te- desco, italiano o russo e i principali testi antropologici redatti in quelle lingue furono tradotti con grande ritardo (si pensi per esempio ai lavori di de Martino).
- Published
- 2022
14. Precision in Liver Diagnosis: Varied Accuracy Across Subgroups and the Need for Variable Thresholds in Diagnosis of MASLD.
- Author
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Vali Y, van Dijk AM, Lee J, Boursier J, Ratziu V, Yunis C, Schattenberg JM, Valenti L, Gomez MR, Schuppan D, Petta S, Allison M, Hartman ML, Porthan K, Dufour JF, Bugianesi E, Gastadelli A, Derdak Z, Fournier-Poizat C, Shumbayawonda E, Kalutkiewicz M, Yki-Jarvinen H, Ekstedt M, Geier A, Trylesinski A, Francque S, Brass C, Pavlides M, Holleboom AG, Nieuwdorp M, Anstee QM, and Bossuyt PM
- Subjects
- Humans, Male, Female, Middle Aged, Adult, ROC Curve, Liver pathology, Liver diagnostic imaging, Fatty Liver diagnostic imaging, Fatty Liver diagnosis, Body Mass Index, Sensitivity and Specificity, Aged, Area Under Curve, Predictive Value of Tests, Elasticity Imaging Techniques, Liver Cirrhosis, Diabetes Mellitus, Type 2 complications
- Abstract
Background and Aims: The performance of non-invasive liver tests (NITs) is known to vary across settings and subgroups. We systematically evaluated whether the performance of three NITs in detecting advanced fibrosis in patients with metabolic dysfunction-associated steatotic liver disease (MASLD) varies with age, sex, body mass index (BMI), type 2 diabetes mellitus (T2DM) status or liver enzymes., Methods: Data from 586 adult LITMUS Metacohort participants with histologically characterised MASLD were included. The diagnostic performance of the Fibrosis-4 Index (FIB-4), enhanced liver fibrosis (ELF) and vibration-controlled transient elastography liver stiffness measurement (VCTE LSM) was evaluated. Performance was expressed as the area under the receiver operating characteristics curve (AUC). Thresholds for detecting advanced fibrosis (≥F3) were calculated for each NIT for fixed (high) sensitivity, specificity and predictive values., Results: Differences in AUC between all subgroups were small and statistically not significant, indicating comparable performance in detecting ≥F3, irrespective of these clinical factors. However, different thresholds were needed to achieve the same level of accuracy with each test. For example, for a fixed sensitivity and specificity, the thresholds for all three NITs were higher in patients with T2DM. Effects for sex, age and liver enzymes were less pronounced., Conclusions: Performance of the selected NITs in detecting advanced liver fibrosis does not vary substantially with clinical characteristics. However, different thresholds have to be selected to achieve the same sensitivity, specificity and predictive values in the respective subgroups. Large prospective studies are called for to study NIT accuracy considering multiple patient characteristics., (© 2025 The Author(s). Liver International published by John Wiley & Sons Ltd.)
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- 2025
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15. Parents in Neonatal Pain Management-An International Survey of Parent-Delivered Interventions and Parental Pain Assessment.
- Author
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Ullsten A, Beken S, Campbell-Yeo M, Cavallaro G, Decembrino N, Durrmeyer X, Garrido F, Kristjánsdóttir G, Amponsah AK, Lago P, Haslund-Thomsen H, Ojha S, Pölkki T, Gomez MR, Roue JM, Simons S, Slater R, Stenkjaer RL, Ünal S, Bosch GVD, Wielenga J, Eriksson M, On Behalf Of The Espr Special Interest Group For Neonatal Pain, and Pearl Research Group
- Abstract
Background: While parent-delivered pain management has been demonstrated to effectively reduce neonatal procedural pain responses, little is known about to what extent it is utilized. Our aim was to explore the utilization of parents in neonatal pain management and investigate whether local guidelines promote parent-delivered interventions., Methods: A web-based survey was distributed to neonatal units worldwide., Results: The majority of the 303 responding neonatal intensive care units (NICUs) from 44 countries were situated in high-income countries from Europe and Central Asia. Of the responding units, 67% had local guidelines about neonatal pain management, and of these, 40% answered that parental involvement was recommended, 27% answered that the role of parents in pain management was mentioned as optional, and 32% responded that it was not mentioned in the guidelines. According to the free-text responses, parent-delivered interventions of skin-to-skin contact, breastfeeding, and parental live singing were the most frequently performed in the NICUs. Of the responding units, 65% answered that parents performed some form of pain management regularly or always., Conclusions: There appears to be some practice uptake of parent-delivered pain management to reduce neonatal pain in high-income countries. Additional incorporation of these interventions into NICU pain guidelines is needed, as well as a better understanding of the use of parent-delivered pain management in low- and middle-income countries.
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- 2024
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16. X-ray self-emission imaging with spherically bent Bragg crystals on the Z-machine.
- Author
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Harding EC, Robertson GK, Dunham GS, Gomez MR, Fein JR, Knapp PF, Harvey-Thompson AJ, Speas CS, Ampleford DJ, Rochau GA, Doron R, and Maron Y
- Abstract
An x-ray imaging scheme using spherically bent crystals was implemented on the Z-machine to image x rays emitted by the hot, dense plasma generated by a Magnetized Liner Inertial Fusion (MagLIF) target. This diagnostic relies on a spherically bent crystal to capture x-ray emission over a narrow spectral range (<15 eV), which is established by a limiting aperture placed on the Rowland circle. The spherical crystal optic provides the necessary high-throughput and large field-of-view required to produce a bright image over the entire, one-cm length of the emitting column of a plasma. The average spatial resolution was measured and determined to be 18 µm for the highest resolution configuration. With this resolution, the radial size of the stagnation column can be accurately determined and radial structures, such as bifurcations in the column, are clearly resolved. The success of the spherical-crystal imager has motivated the implementation of a new, two-crystal configuration for identifying sources of spectral line emission using a differential imaging technique., (© 2023 Author(s). Published under an exclusive license by AIP Publishing.)
- Published
- 2023
- Full Text
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17. Demonstration of improved laser preheat with a cryogenically cooled magnetized liner inertial fusion platform.
- Author
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Harvey-Thompson AJ, Geissel M, Crabtree JA, Weis MR, Gomez MR, Fein JR, Lewis WE, Ampleford DJ, Awe TJ, Chandler GA, Galloway BR, Hansen SB, Hanson J, Harding EC, Jennings CA, Kimmel M, Knapp PF, Mangan MA, Maurer A, Paguio RR, Perea L, Peterson KJ, Porter JL, Rambo PK, Robertson GK, Rochau GA, Ruiz DE, Shores JE, Slutz SA, Smith GE, Smith IC, Speas CS, Yager-Elorriaga DA, and York A
- Abstract
We report on progress implementing and testing cryogenically cooled platforms for Magnetized Liner Inertial Fusion (MagLIF) experiments. Two cryogenically cooled experimental platforms were developed: an integrated platform fielded on the Z pulsed power generator that combines magnetization, laser preheat, and pulsed-power-driven fuel compression and a laser-only platform in a separate chamber that enables measurements of the laser preheat energy using shadowgraphy measurements. The laser-only experiments suggest that ∼89% ± 10% of the incident energy is coupled to the fuel in cooled targets across the energy range tested, significantly higher than previous warm experiments that achieved at most 67% coupling and in line with simulation predictions. The laser preheat configuration was applied to a cryogenically cooled integrated experiment that used a novel cryostat configuration that cooled the MagLIF liner from both ends. The integrated experiment, z3576, coupled 2.32 ± 0.25 kJ preheat energy to the fuel, the highest to-date, demonstrated excellent temperature control and nominal current delivery, and produced one of the highest pressure stagnations as determined by a Bayesian analysis of the data., (© 2023 Author(s). Published under an exclusive license by AIP Publishing.)
- Published
- 2023
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18. Hybridization increases genetic diversity in Schistosoma haematobium populations infecting humans in Cameroon.
- Author
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Teukeng FFD, Blin M, Bech N, Gomez MR, Zein-Eddine R, Simo AMK, Allienne JF, Tchuem-Tchuenté LA, and Boissier J
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- Animals, Bayes Theorem, Cameroon epidemiology, Child, Humans, Polymorphism, Restriction Fragment Length, Hybridization, Genetic, Schistosoma haematobium genetics
- Abstract
Background: Hybrids between Schistosoma haematobium (Sh) and S. bovis (Sb) have been found in several African countries as well as in Europe. Since the consequences of this hybridization are still unknown, this study aims to verify the presence of such hybrids in Cameroonian humans, to describe the structure of S. haematobium populations on a large geographic scale, and to examine the impact of these hybrids on genetic diversity and structure of these populations., Methods: From January to April 2019, urine from infected children was collected in ten geographically distinct populations. Miracidia were collected from eggs in this urine. To detect the presence of hybrids among these miracidia we genotyped both Cox1 (RD-PCR) and ITS2 gene (PCR-RFLP). Population genetic diversity and structure was assessed by genotyping each miracidium with a panel of 14 microsatellite markers. Gene diversity was measured using both heterozygosity and allelic richness indexes, and genetic structure was analyzed using paired Fst, PCA and Bayesian approaches., Results: Of the 1327 miracidia studied, 88.7% were identified as pure genotypes of S. haematobium (Sh_Sh/Sh) while the remaining 11.3% were hybrids (7.0% with Sh_Sh/Sb, 3.7% with Sb_Sb/Sh and 0.4% with Sb_Sh/Sb). No miracidium has been identified as a pure genotype of S. bovis. Allelic richness ranged from 5.55 (Loum population) to 7.73 (Matta-Barrage) and differed significantly between populations. Mean heterozygosity ranged from 53.7% (Loum) to 59% (Matta Barrage) with no significant difference. The overall genetic differentiation inferred either by a principal component analysis or by the Bayesian approach shows a partial structure. Southern populations (Loum and Matta Barrage) were clearly separated from other localities but genetic differentiation between northern localities was limited, certainly due to the geographic proximity between these sites., Conclusions: Hybrids between S. haematobium and S. bovis were identified in 11.3% of miracidia that hatched from eggs present in the urine of Cameroonian schoolchildren. The percentages of these hybrids are correlated with the genetic diversity of the parasite, indicating that hybridization increases genetic diversity in our sampling sites. Hybridization is therefore a major biological process that shapes the genetic diversity of S. haematobium., (© 2022. The Author(s).)
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- 2022
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19. Severe Acute Respiratory Syndrome Coronavirus-2 Pneumonia in a Newborn Treated With Remdesivir and Coronavirus Disease 2019 Convalescent Plasma.
- Author
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Hopwood AJ, Jordan-Villegas A, Gutierrez LD, Cowart MC, Vega-Montalvo W, Cheung WL, McMahan MJ, Gomez MR, and Laham FR
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- Adenosine Monophosphate therapeutic use, Adolescent, Alanine therapeutic use, Female, Humans, Immunization, Passive, Infant, Newborn, Pneumonia, Viral virology, SARS-CoV-2, COVID-19 Serotherapy, Adenosine Monophosphate analogs & derivatives, Alanine analogs & derivatives, Antiviral Agents therapeutic use, COVID-19 therapy, COVID-19 transmission, Infectious Disease Transmission, Vertical, Pneumonia, Viral therapy, Pneumonia, Viral transmission
- Abstract
Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) is a novel pandemic virus. Mounting evidence supports the possibility of vertical transmission, which at the present time appears to be rare. We report a newborn with vertically acquired SARS-CoV-2 who developed acute respiratory failure and received remdesivir and coronavirus disease 2019 convalescent plasma., (© The Author(s) 2020. Published by Oxford University Press on behalf of The Journal of the Pediatric Infectious Diseases Society. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
- Published
- 2021
- Full Text
- View/download PDF
20. The inductively driven transmission line: A passively coupled device for diagnostic applications on the Z pulsed power facility.
- Author
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Myers CE, Lamppa DC, Jennings CA, Gomez MR, Knapp PF, Kossow MR, Lucero LM, Moore JK, and Yager-Elorriaga DA
- Abstract
The inductively driven transmission line (IDTL) is a miniature current-carrying device that passively couples to fringe magnetic fields in the final power feed on the Z Pulsed Power Facility. The IDTL redirects a small amount of Z's magnetic energy along a secondary path to ground, thereby enabling pulsed power diagnostics to be driven in parallel with the primary load for the first time. IDTL experiments and modeling presented here indicate that IDTLs operate non-perturbatively on Z and that they can draw in excess of 150 kA of secondary current, which is enough to drive an X-pinch backlighter. Additional experiments show that IDTLs are also capable of making cleaner, higher-fidelity measurements of the current flowing in the final feed.
- Published
- 2021
- Full Text
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21. A time-resolved, in-chamber x-ray pinhole imager for Z.
- Author
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Webb TJ, Ampleford D, Ball CR, Gomez MR, Lake PW, Maurer A, and Presura R
- Abstract
We have commissioned a new time-resolved, x-ray imaging diagnostic for the Z facility. The primary intended application is for diagnosing the stagnation behavior of Magnetized Liner Inertial Fusion (MagLIF) and similar targets. We have a variety of imaging systems at Z, both time-integrated and time-resolved, that provide valuable x-ray imaging information, but no system at Z up to this time provides a combined high-resolution imaging with multi-frame time resolution; this new diagnostic, called TRICXI for Time Resolved In-Chamber X-ray Imager, is meant to provide time-resolved spatial imaging with high resolution. The multi-frame camera consists of a microchannel plate camera. A key component to achieving the design goals is to place the instrument inside the Z vacuum chamber within 2 m of the load, which necessitates a considerable amount of x-ray shielding as well as a specially designed, independent vacuum system. A demonstration of the imaging capability for a series of MagLIF shots is presented. Predictions are given for resolution and relative image irradiance to guide experimenters in choosing the desired configuration for their experiments.
- Published
- 2021
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22. Performance Scaling in Magnetized Liner Inertial Fusion Experiments.
- Author
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Gomez MR, Slutz SA, Jennings CA, Ampleford DJ, Weis MR, Myers CE, Yager-Elorriaga DA, Hahn KD, Hansen SB, Harding EC, Harvey-Thompson AJ, Lamppa DC, Mangan M, Knapp PF, Awe TJ, Chandler GA, Cooper GW, Fein JR, Geissel M, Glinsky ME, Lewis WE, Ruiz CL, Ruiz DE, Savage ME, Schmit PF, Smith IC, Styron JD, Porter JL, Jones B, Mattsson TR, Peterson KJ, Rochau GA, and Sinars DB
- Abstract
We present experimental results from the first systematic study of performance scaling with drive parameters for a magnetoinertial fusion concept. In magnetized liner inertial fusion experiments, the burn-averaged ion temperature doubles to 3.1 keV and the primary deuterium-deuterium neutron yield increases by more than an order of magnitude to 1.1×10^{13} (2 kJ deuterium-tritium equivalent) through a simultaneous increase in the applied magnetic field (from 10.4 to 15.9 T), laser preheat energy (from 0.46 to 1.2 kJ), and current coupling (from 16 to 20 MA). Individual parametric scans of the initial magnetic field and laser preheat energy show the expected trends, demonstrating the importance of magnetic insulation and the impact of the Nernst effect for this concept. A drive-current scan shows that present experiments operate close to the point where implosion stability is a limiting factor in performance, demonstrating the need to raise fuel pressure as drive current is increased. Simulations that capture these experimental trends indicate that another order of magnitude increase in yield on the Z facility is possible with additional increases of input parameters.
- Published
- 2020
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23. A pulsed-power implementation of "Laser Gate" for increasing laser energy coupling and fusion yield in magnetized liner inertial fusion (MagLIF).
- Author
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Miller SM, Slutz SA, Bland SN, Klein SR, Campbell PC, Woolstrum JM, Kuranz CC, Gomez MR, Jordan NM, and McBride RD
- Abstract
Magnetized Liner Inertial Fusion (MagLIF) at Sandia National Laboratories involves a laser preheating stage where a few-ns laser pulse passes through a few-micron-thick plastic window to preheat gaseous fusion fuel contained within the MagLIF target. Interactions with this window reduce heating efficiency and mix window and target materials into the fuel. A recently proposed idea called "Laser Gate" involves removing the window well before the preheating laser is applied. In this article, we present experimental proof-of-principle results for a pulsed-power implementation of Laser Gate, where a thin current-carrying wire weakens the perimeter of the window, allowing the fuel pressure to push the window open and away from the preheating laser path. For this effort, transparent targets were fabricated and a test facility capable of studying this version of Laser Gate was developed. A 12-frame bright-field laser schlieren/shadowgraphy imaging system captured the window opening dynamics on microsecond timescales. The images reveal that the window remains largely intact as it opens and detaches from the target. A column of escaping pressurized gas appears to prevent the detached window from inadvertently moving into the preheating laser path.
- Published
- 2020
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24. Photoautotrophically Grown Chlorella vulgaris Shows Genotoxic Potential but No Apoptotic Effect in Epithelial Cells.
- Author
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Gille A, Trautmann A, Gomez MR, Bischoff SC, Posten C, and Briviba K
- Subjects
- Apoptosis drug effects, Autotrophic Processes, Cell Line, Cell Proliferation drug effects, Chlorella vulgaris growth & development, Chlorella vulgaris radiation effects, Comet Assay, Epithelial Cells drug effects, Epithelial Cells metabolism, Humans, Light, Lipid Peroxidation drug effects, Reactive Oxygen Species metabolism, Chlorella vulgaris chemistry, DNA Damage drug effects, Epithelial Cells cytology, Mutagens toxicity, Plant Extracts toxicity
- Abstract
This study investigated the effect of Chlorella vulgaris ( C. vulgaris ) on genotoxicity, cytotoxicity, and apoptosis in Caco-2 and HT-29 cells. C. vulgaris significantly induced DNA damage in both cell lines at a concentration of 200 μg dry matter/mL (comet tail intensity CTI: 24.6 ± 4.7% for Caco-2, 16.6 ± 0.9% for HT-29). The application of processing (sonication, ball-milling) did not affect the genotoxicity negatively and lowered the lipid peroxidation in C. vulgaris preparations. C. vulgaris -induced intracellular formation of reactive oxygen species in human cell lines and might be responsible for the genotoxic effect. A solid fraction mainly triggered the observed DNA damage (CTI: 41.5 ± 1.9%), whereas a hydrophilic (CTI: 7.9 ± 1.7%) and lipophilic (CTI: 10.2 ± 2.1%) fraction revealed a significantly lower tail intensity. C. vulgaris significantly induced DNA damage in both cell lines possibly through intracellular formation of reactive oxygen species; however, it was repaired after a 2 h recovery time or was even avoided at lower concentrations. In addition, none of the preparations indicated an adverse effect on cell proliferation or revealed apoptotic activity.
- Published
- 2019
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25. Retrospective analysis of factors associated with the success of stepwise excavation procedure in deep carious lesions.
- Author
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Ortega-Verdugo P, Warren JJ, Kolker JL, Carter KD, Guzmán-Armstrong S, and Gomez MR
- Subjects
- Adult, Dental Pulp Capping, Dental Pulp Exposure, Humans, Retrospective Studies, Dental Caries, Tooth
- Abstract
Background: Recent scientific evidence regarding the stepwise excavation procedure (SWP) has not addressed the consideration of patient factors when selecting SWP as treatment for deep carious lesions (DCLs). This study assessed patient factors predicting a successful SWP defined as a tooth restored with SWP and did not result in root canal treatment or a dental extraction., Methods: SWPs completed in 626 patients without symptomatic irreversible pulpitis at the University of Iowa College of Dentistry from January 2004 through December 2012 were evaluated. Patient demographic and tooth-specific characteristics were assessed in their relationship with the main outcome., Results: SWPs had a 75% success rate when evaluated within 36 months of the initial treatment. Findings showed that patients who had successful SWP treatment of DCLs were somewhat younger than patients whose SWP treatment was not successful (mean age, 37.4 years and 40.5 years, respectively; odds ratio, 0.981; 95% confidence interval, 0.967 to 0.994; P = .0058). Patients who returned to their second appointment within 5 to 9 months were more likely to have a successful SWP treatment than those returning sooner than 5 months (odds ratio, 0.338; 95% confidence interval, 0.210 to 0.545; p < .0001)., Conclusion: Treatment of deep carious lesions with SWP is effective for pulp preservation and patient age may influence the outcome., Practical Implications: Although a somewhat younger mean patient age was associated with successful treatment of DCLs, SWP can be successful regardless of patient age and clinicians should consider SWP in treating DCLs., (Copyright © 2018 American Dental Association. Published by Elsevier Inc. All rights reserved.)
- Published
- 2018
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26. More Than "Just Don't Say No": Taking Pediatric Decision Making Seriously.
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Fox MD and Gomez MR
- Subjects
- Child, Humans, Clinical Decision-Making, Decision Making
- Published
- 2018
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27. A simple and highly selective molecular imprinting polymer-based methodology for propylparaben monitoring in personal care products and industrial waste waters.
- Author
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Vicario A, Aragón L, Wang CC, Bertolino F, and Gomez MR
- Subjects
- Chromatography, High Pressure Liquid instrumentation, Chromatography, High Pressure Liquid methods, Cosmetics toxicity, Environmental Monitoring instrumentation, Environmental Monitoring methods, Molecular Imprinting instrumentation, Parabens toxicity, Silicon Dioxide chemistry, Solid Phase Extraction instrumentation, Solid Phase Extraction methods, Wastewater toxicity, Cosmetics analysis, Molecular Imprinting methods, Parabens analysis, Polymers chemistry, Wastewater analysis
- Abstract
In this work, a novel molecularly imprinted polymer (MIP) proposed as solid phase extraction sorbent was developed for the determination of propylparaben (PP) in diverse cosmetic samples. The use of parabens (PAs) is authorized by regulatory agencies as microbiological preservative; however, recently several studies claim that large-scale use of these preservatives can be a potential health risk and harmful to the environment. Diverse factors that influence on polymer synthesis were studied, including template, functional monomer, porogen and crosslinker used. Morphological characterization of the MIP was performed using SEM and BET analysis. Parameters affecting the molecularly imprinted solid phase extraction (MISPE) and elution efficiency of PP were evaluated. After sample clean-up, the analyte was analyzed by high performance liquid chromatography (HPLC). The whole procedure was validated, showing satisfactory analytical parameters. After applying the MISPE methodology, the extraction recoveries were always better than 86.15%; the obtained precision expressed as RSD% was always lower than 2.19 for the corrected peak areas. Good linear relationship was obtained within the range 8-500ngmL
-1 of PP, r2 =0.99985. Lower limits of detection and quantification after MISPE procedure of 2.4 and 8ngmL-1 , respectively were reached, in comparison with previously reported methodologies. The development of MISPE-HPLC methodology provided a simple an economic way for accomplishing a clean-up/preconcentration step and the subsequent determination of PP in a complex matrix. The performance of the proposed method was compared against C-18 and silica solid phase extraction (SPE) cartridges. The recovery factors obtained after applying extraction methods were 96.6, 64.8 and 0.79 for MISPE, C18-SPE and silica-SPE procedures, respectively. The proposed methodology improves the retention capability of SPE material plus robustness and possibility of reutilization, enabling it to be used for PP routine monitoring in diverse personal care products (PCP) and environmental samples., (Copyright © 2017 Elsevier B.V. All rights reserved.)- Published
- 2018
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28. "Save or Create": The Practical Asymmetry of Judgment Training in Decision Making in Neonatology-When Basic Desires Clash With Preparation to Act.
- Author
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Gomez MR
- Subjects
- Decision Making, Humans, Judgment, Neonatology
- Published
- 2017
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29. A green alternative method for analysis of ivermectin and moxidectin in environmental water samples using automatized preconcentration previous MEEKC.
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Felici E, Casado C, Wang CC, Raba J, and Gomez MR
- Subjects
- Green Chemistry Technology, Limit of Detection, Linear Models, Polystyrenes chemistry, Polyvinyls chemistry, Reproducibility of Results, Chromatography, Micellar Electrokinetic Capillary methods, Ivermectin analysis, Macrolides analysis, Water Pollutants, Chemical analysis
- Abstract
Antiparasitic drugs derived from macrocyclic lactones (MLs) are widely used in livestock activities around the world. An increasing concern for local authorities is the environmental pollution as a consequence of veterinary drugs widely used in rural areas. The purpose of environmental analysis is to monitor low levels of pollutant analytes in a large number of samples. Also, due to the lipophilic characteristic of these lactones, long-chain solvents are usually required for performing sample treatment before and during the analysis. Therefore, sensitive, specific, robust, and environmentally friendly analytical methods are still required. In this paper, a new automatized preconcentration methodology followed by microemulsion electrokinetic chromatography analysis was developed for the simultaneous separation and determination of the most used MLs, ivermectin (IVM) and moxidectin (MXD) in environmental water. XAD-4 resin was employed as an adsorbent for the preconcentration process and ethanol was used as the eluent. In contrast to traditional analysis for IVM and MXD, in this methodology nonpolluting solvents were involved during the whole process and therefore, it could be considered as a contribution to green analytical chemistry. Under optimal experimental conditions, LOD obtained for IVM and MXD were of 3 × 10
-3 and 3.6 × 10-3 μg/L, respectively., (© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)- Published
- 2016
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30. Hazard Warning! The Perils of Extending Moral Hazard Analysis Only to Contrarian Parents.
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Gomez MR, Moran R, Munoz RT, and Fox MD
- Subjects
- Humans, Ethical Analysis, Parents
- Published
- 2016
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31. Comparison of Mechanical and Indirect Ultrasonic Placement Technique on Mineral Trioxide Aggregate Retrofill Density in Simulated Root-end Surgery.
- Author
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Friedl CC, Williamson AE, Dawson DV, Gomez MR, and Liu W
- Subjects
- Drug Combinations, Humans, Random Allocation, Retrograde Obturation methods, Root Canal Obturation methods, Root Canal Preparation instrumentation, Root Canal Preparation methods, Tooth Apex anatomy & histology, Tooth Apex surgery, Tooth Root anatomy & histology, Aluminum Compounds chemistry, Calcium Compounds chemistry, Oxides chemistry, Root Canal Filling Materials chemistry, Root Canal Therapy methods, Silicates chemistry, Tooth Root surgery, Ultrasonic Therapy methods
- Abstract
Introduction: The objective of this study was to evaluate the density of mineral trioxide aggregate (MTA) root-end filling placed by either manual condensation or manual condensation with indirect ultrasonic activation under simulated root-end surgery conditions in vitro., Methods: Extracted human molar teeth were obtained and sectioned to provide single-rooted samples (n = 50). Roots were instrumented to a size of 40 with a .04 taper and obturated with a warm vertical technique. The coronal end of each root was embedded in resin. A root-end resection and root-end preparation were completed on each root. Samples were randomly assigned to receive root-end fillings with ProRoot MTA (Dentsply, Tulsa, OK) by 1 of 2 techniques: manual condensation alone (group M, n = 25) or manual condensation with indirect ultrasonic activation (group U, n = 25). MTA was placed incrementally to the level of the root end using the enumerated technique. Samples were weighed immediately before and after filling placement. MTA was removed from all samples so as not to change the root-end preparation, rinsed, and dried. Each sample then underwent MTA placement by the opposite technique, and weight was again measured immediately before and after MTA placement. MTA filling weights for each technique were analyzed statistically using a technique for repeated measures analysis. Statistical analysis was conducted to account for any carryover or order effects., Results: After adjustment for carryover effects, it was found that regardless of the order of placement, the mean fill weight of MTA produced by the indirect ultrasonic method was on average 4.42 mg heavier than that produced by manual condensation alone. This result was statistically significant (P < .0003)., Conclusions: Under simulated root-end surgery conditions, indirect ultrasonic condensation of MTA root-end fillings was shown to produce a filling that was significantly denser than MTA placed by manual condensation alone., (Copyright © 2016 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.)
- Published
- 2016
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32. Experimental Demonstration of the Stabilizing Effect of Dielectric Coatings on Magnetically Accelerated Imploding Metallic Liners.
- Author
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Awe TJ, Peterson KJ, Yu EP, McBride RD, Sinars DB, Gomez MR, Jennings CA, Martin MR, Rosenthal SE, Schroen DG, Sefkow AB, Slutz SA, Tomlinson K, and Vesey RA
- Abstract
Enhanced implosion stability has been experimentally demonstrated for magnetically accelerated liners that are coated with 70 μm of dielectric. The dielectric tamps liner-mass redistribution from electrothermal instabilities and also buffers coupling of the drive magnetic field to the magneto-Rayleigh-Taylor instability. A dielectric-coated and axially premagnetized beryllium liner was radiographed at a convergence ratio [CR=Rin,0/Rin(z,t)] of 20, which is the highest CR ever directly observed for a strengthless magnetically driven liner. The inner-wall radius Rin(z,t) displayed unprecedented uniformity, varying from 95 to 130 μm over the 4.0 mm axial height captured by the radiograph.
- Published
- 2016
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33. The Pediatrician's Dilemma: Respecting Parental Autonomy Versus Protecting Vulnerable Children.
- Author
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Gomez MR, Bielefeld KJ, Escala MK, Munoz RT, and Fox MD
- Subjects
- Child, Humans, Pediatrics, Parents, Physicians
- Published
- 2016
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- View/download PDF
34. Frequency of prescribing errors by medical residents in various training programs.
- Author
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Honey BL, Bray WM, Gomez MR, and Condren M
- Subjects
- Ambulatory Care Facilities, Child, Family Practice education, Humans, Infant, Internal Medicine education, Internship and Residency organization & administration, Male, Medication Errors prevention & control, Pediatrics education, United States, Drug Prescriptions statistics & numerical data, Internship and Residency statistics & numerical data, Medical Staff, Hospital organization & administration, Medication Errors statistics & numerical data
- Abstract
Objectives: Medication errors are hazardous and costly. Children are at increased risk for medication errors because of weight-based dosing, limited FDA indications, and human calculation errors. The aim of this study is to determine the frequency and type of resident prescribing errors in a pediatric clinic and further compare error rates of residents in different training programs., Methods: Resident prescription error data from a pediatric clinic was collected for 5 months. Upon detection of an error, residents were notified/given feedback regarding the type of error, ways to remedy errors, and future prevention methods. Data were categorized based on medication involved, error type, and resident training program., Results: The review included 2941 prescriptions, with the overall resident prescribing error rate being 5.88%. The pediatric resident error rate was 4%. Family medicine, internal medicine, and medicine/pediatrics had error rates of 11%, 8%, and 7%, respectively. The prescribing error rate showed a statistically significant difference with pediatrics compared with family medicine, internal medicine, and medicine/pediatrics (P < 0.0005, P = 0.013, and P = 0.03, respectively). The most common medication error type was overdose, followed by unclear quantity. Among the medication classes, topical agents and antimicrobials were among the top prescribed., Conclusions: Numerous types of medication errors occur in a pediatric clinic. Prescribing errors take place among all medical trainees; however, medication error rates in the pediatric population may vary among resident specialty. Identifying the cause of prescribing errors will allow institutions to create educational programs tailored for safe medication use in children as well as systemwide changes for error reduction.
- Published
- 2015
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35. Multifactor-dimensionality reduction reveals interaction of important gene variants involved in allergy.
- Author
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de Guia RM, Echavez MD, Gaw EL, Gomez MR, Lopez KA, Mendoza RC, Rapsing JM, Retreta DP, Tubog CM, Ventolero MH, Yao CL, and Ramos JD
- Subjects
- Alleles, Case-Control Studies, Gene Frequency, Genotype, Humans, Hypersensitivity diagnosis, Hypersensitivity immunology, Hypersensitivity, Immediate diagnosis, Hypersensitivity, Immediate genetics, Hypersensitivity, Immediate immunology, Immunoglobulin E blood, Immunoglobulin E immunology, Models, Genetic, Odds Ratio, Phenotype, Reproducibility of Results, Epistasis, Genetic, Genetic Association Studies, Genetic Predisposition to Disease, Genetic Variation, Hypersensitivity genetics
- Abstract
Elevated IgE levels in the atopic triad of asthma, allergic rhinitis and atopic dermatitis is a multifactorial condition whose genetic component involves interaction of several gene loci. One hundred and two matched pairs of allergic and nonallergic individuals were phenotyped for total serum IgE level using enzyme-linked immunosorbent assay (ELISA). Atopic status was defined by serum IgE concentration ≥100 IU mL(-1) . SNPs genotyped include the IL4 -590C>T (rs2243250), FCER1B E237G (rs569108), CD14 -159C>T (rs2569190), IL4RA Q551R (rs1801275) and ADRB2 R16G (rs1042713). Gene-gene interaction was analysed using multifactor-dimensionality reduction (MDR). Significant association between atopic allergy and the IL4 -590C>T polymorphism was confirmed in three genetic models. Interaction among the 5 gene variants was validated by MDR. The five-locus model was chosen as the best to describe the interaction of the SNPs within the context of atopy. The strongest interaction was between IL4 -590C>T and IL4RA Q551R and between FCER1B E237G and ADRB2 R16G. The IL4 variant also interacts synergistically with the FCER1B and ADRB2 coding variants. CD14 -159C>T, in general, interacts antagonistically with the rest of the SNPs. In conclusion, a five-locus interaction exists among IL4 -590C>T, FCER1B E237G, CD14 -159C>T, IL4RA Q551R and ADRB2 R16G in Filipino cases of atopic allergy., (© 2015 John Wiley & Sons Ltd.)
- Published
- 2015
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36. Just deserts or icing on the cake? Addressing the social determinants of health.
- Author
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Fox MD, Gomez MR, and Munoz RT
- Subjects
- Humans, Health Policy, Health Status Disparities, Public Health, Social Determinants of Health, Social Justice
- Published
- 2015
- Full Text
- View/download PDF
37. Simultaneous separation of ergot alkaloids by capillary electrophoresis after cloud point extraction from cereal samples.
- Author
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Felici E, Wang CC, Fernández LP, and Gomez MR
- Subjects
- Flour analysis, Limit of Detection, Liquid-Liquid Extraction methods, Reproducibility of Results, Spectrophotometry, Ultraviolet, Surface-Active Agents chemistry, Edible Grain chemistry, Electrophoresis, Capillary methods, Ergot Alkaloids analysis, Food Contamination analysis
- Abstract
A new and sensitive analytical methodology for ergot alkaloids (EA) determination from cereal samples based on cloud point extraction (CPE) prior to CE-UV absorbance was developed. The methodology involves extraction under acid conditions and subsequent preconcentration by applying a simple, rapid and environmentally friendly low volume surfactant extraction procedure. After extraction, CE analysis was carried out by performing dilutions on preconcentrated surfactant rich phase, achieving a single peak or simultaneous alkaloids determination. A real preconcentration factor of 22 of total EA was obtained, demonstrating the efficiency of this methodology. The limits of detection were 2.6 and 2.2 μg/kg for ergotamine and ergonovine, respectively. Validation procedure revealed suitable linearity, accuracy and precision. The average extraction and clean-up recoveries were compared with the theoretical values and were better than 92%. This method was successfully applied to the determination of EA in different varieties of commercial flour samples, two grain samples and one of the leading brands cereal-based product for infant feeding. The high sensitivity achieved for EA determinations in real samples suggests CPE procedure as an interesting approach to improve CE-UV visible detection limits. Moreover, the whole process could be considered as a contribution to green chemistry because nonorganic solvents were involved, demonstrating its great potential over conventional techniques., (© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)
- Published
- 2015
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38. What's in a Name? Conceptual Confusion About Death and Consent in Donation After Cardiac Determination of Death.
- Author
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Fox MD, Budavich R, Gelfand S, Gomez MR, Munoz RT, and Slater J
- Subjects
- Humans, Cardiovascular System, Death, Informed Consent ethics, Mental Competency, Social Values, Tissue Donors, Tissue Survival, Tissue and Organ Harvesting ethics, Tissue and Organ Procurement ethics
- Published
- 2015
- Full Text
- View/download PDF
39. Magnetic field measurements via visible spectroscopy on the Z machine.
- Author
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Gomez MR, Hansen SB, Peterson KJ, Bliss DE, Carlson AL, Lamppa DC, Schroen DG, and Rochau GA
- Abstract
Sandia's Z Machine uses its high current to magnetically implode targets relevant to inertial confinement fusion. Since target performance is highly dependent on the applied drive field, measuring magnetic field at the target is essential for accurate simulations. Recently, the magnetic field at the target was measured through splitting of the sodium 3s-3p doublet at 5890 and 5896 Å. Spectroscopic dopants were applied to the exterior of the target, and spectral lines were observed in absorption. Magnetic fields in excess of 200 T were measured, corresponding to drive currents of approximately 5 MA early in the pulse.
- Published
- 2014
- Full Text
- View/download PDF
40. Understanding fuel magnetization and mix using secondary nuclear reactions in magneto-inertial fusion.
- Author
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Schmit PF, Knapp PF, Hansen SB, Gomez MR, Hahn KD, Sinars DB, Peterson KJ, Slutz SA, Sefkow AB, Awe TJ, Harding E, Jennings CA, Chandler GA, Cooper GW, Cuneo ME, Geissel M, Harvey-Thompson AJ, Herrmann MC, Hess MH, Johns O, Lamppa DC, Martin MR, McBride RD, Porter JL, Robertson GK, Rochau GA, Rovang DC, Ruiz CL, Savage ME, Smith IC, Stygar WA, and Vesey RA
- Abstract
Magnetizing the fuel in inertial confinement fusion relaxes ignition requirements by reducing thermal conductivity and changing the physics of burn product confinement. Diagnosing the level of fuel magnetization during burn is critical to understanding target performance in magneto-inertial fusion (MIF) implosions. In pure deuterium fusion plasma, 1.01 MeV tritons are emitted during deuterium-deuterium fusion and can undergo secondary deuterium-tritium reactions before exiting the fuel. Increasing the fuel magnetization elongates the path lengths through the fuel of some of the tritons, enhancing their probability of reaction. Based on this feature, a method to diagnose fuel magnetization using the ratio of overall deuterium-tritium to deuterium-deuterium neutron yields is developed. Analysis of anisotropies in the secondary neutron energy spectra further constrain the measurement. Secondary reactions also are shown to provide an upper bound for the volumetric fuel-pusher mix in MIF. The analysis is applied to recent MIF experiments [M. R. Gomez et al., Phys. Rev. Lett. 113, 155003 (2014)] on the Z Pulsed Power Facility, indicating that significant magnetic confinement of charged burn products was achieved and suggesting a relatively low-mix environment. Both of these are essential features of future ignition-scale MIF designs.
- Published
- 2014
- Full Text
- View/download PDF
41. Experimental demonstration of fusion-relevant conditions in magnetized liner inertial fusion.
- Author
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Gomez MR, Slutz SA, Sefkow AB, Sinars DB, Hahn KD, Hansen SB, Harding EC, Knapp PF, Schmit PF, Jennings CA, Awe TJ, Geissel M, Rovang DC, Chandler GA, Cooper GW, Cuneo ME, Harvey-Thompson AJ, Herrmann MC, Hess MH, Johns O, Lamppa DC, Martin MR, McBride RD, Peterson KJ, Porter JL, Robertson GK, Rochau GA, Ruiz CL, Savage ME, Smith IC, Stygar WA, and Vesey RA
- Abstract
This Letter presents results from the first fully integrated experiments testing the magnetized liner inertial fusion concept [S. A. Slutz et al., Phys. Plasmas 17, 056303 (2010)], in which a cylinder of deuterium gas with a preimposed 10 Taxial magnetic field is heated by Z beamlet, a 2.5 kJ, 1 TW laser, and magnetically imploded by a 19 MA, 100 ns rise time current on the Z facility. Despite a predicted peak implosion velocity of only 70 km = s, the fuel reaches a stagnation temperature of approximately 3 keV, with T(e) ≈ T(i), and produces up to 2 x 10(12) thermonuclear deuterium-deuterium neutrons. X-ray emission indicates a hot fuel region with full width at half maximum ranging from 60 to 120 μm over a 6 mm height and lasting approximately 2 ns. Greater than 10(10) secondary deuterium-tritium neutrons were observed, indicating significant fuel magnetization given that the estimated radial areal density of the plasma is only 2 mg = cm(2).
- Published
- 2014
- Full Text
- View/download PDF
42. Defining minimal risk and the clinical disconnect.
- Author
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Fox MD, Gomez MR, and Munoz RT
- Subjects
- Female, Humans, Male, Child Welfare ethics, Human Experimentation ethics, Pediatrics ethics, Risk Assessment, Social Justice
- Published
- 2014
- Full Text
- View/download PDF
43. Basophils control T-cell responses and limit disease activity in experimental murine colitis.
- Author
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Gomez MR, Talke Y, Hofmann C, Ketelsen I, Hermann F, Reich B, Goebel N, Schmidbauer K, Dunger N, Brühl H, Renner K, Syed SN, and Mack M
- Subjects
- Adoptive Transfer, Animals, Basophils metabolism, Colitis genetics, Colitis metabolism, Cytokines blood, Cytokines metabolism, Disease Models, Animal, Female, Lymphopenia immunology, Lymphopenia metabolism, Male, Mice, Mice, Knockout, Phenotype, T-Lymphocytes metabolism, Th1 Cells immunology, Th1 Cells metabolism, Basophils immunology, Colitis immunology, T-Lymphocytes immunology
- Abstract
Basophils have been recognized as important inducers of T helper type 2 (Th2) responses. Using the colitis model of adoptive transfer of CD4(+) CD62L(+) T cells into lymphopenic hosts, we have analyzed how basophils regulate T-cell responses and modulate disease activity. Transferred T cells rapidly proliferate, produce large amounts of interleukin (IL)-3, and expand the number of basophils in an IL-3-dependent manner. Depletion of basophils with two different antibodies substantially upregulated Th1 cytokines in transferred T cells at day 8. Increased Th1 cytokine expression persisted until the end of the experiment when basophil-depleted mice showed exacerbation of colitis with more severe loss of weight, histological damage, colonic leukocyte infiltration, and expression of pro-inflammatory cytokines. In vitro, we show that basophil-derived IL-4 and IL-6 downregulates expression of interferon-γ, IL-2, and tumor necrosis factor in T cells. These data show a beneficial role of basophils in a T-cell driven model of autoimmunity.
- Published
- 2014
- Full Text
- View/download PDF
44. Observations of modified three-dimensional instability structure for imploding z-pinch liners that are premagnetized with an axial field.
- Author
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Awe TJ, McBride RD, Jennings CA, Lamppa DC, Martin MR, Rovang DC, Slutz SA, Cuneo ME, Owen AC, Sinars DB, Tomlinson K, Gomez MR, Hansen SB, Herrmann MC, McKenney JL, Nakhleh C, Robertson GK, Rochau GA, Savage ME, Schroen DG, and Stygar WA
- Abstract
Novel experimental data are reported that reveal helical instability formation on imploding z-pinch liners that are premagnetized with an axial field. Such instabilities differ dramatically from the mostly azimuthally symmetric instabilities that form on unmagnetized liners. The helical structure persists at nearly constant pitch as the liner implodes. This is surprising since, at the liner surface, the azimuthal drive field presumably dwarfs the axial field for all but the earliest stages of the experiment. These fundamentally 3D results provide a unique and challenging test for 3D-magnetohydrodynamics simulations.
- Published
- 2013
- Full Text
- View/download PDF
45. Presumed consent models and health information exchanges: hard nudges and ambiguous benefits.
- Author
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Munoz RT, Fox MD, and Gomez MR
- Subjects
- Humans, Beneficence, Choice Behavior ethics, Coercion, Comprehension, Freedom, Informed Consent ethics, Personal Autonomy, Persuasive Communication
- Published
- 2013
- Full Text
- View/download PDF
46. Rhabdomyolysis associated with parainfluenza virus.
- Author
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Douvoyiannis M, Kielbasa JM, Chandrasekharan GM, Holmes CL, and Gomez MR
- Abstract
Influenza virus is the most frequently reported viral cause of rhabdomyolysis. A 7-year-old child is presented with rhabdomyolysis associated with parainfluenza type 2 virus. Nine cases of rhabdomyolysis associated with parainfluenza virus have been reported. Complications may include electrolyte disturbances, acute renal failure, and compartment syndrome.
- Published
- 2013
- Full Text
- View/download PDF
47. Pinned, optically aligned diagnostic dock for use on the Z facility.
- Author
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Gomez MR, Rochau GA, Bailey JE, Dunham GS, Kernaghan MD, Gard P, Robertson GK, Owen AC, Argo JW, Nielsen DS, and Lake PW
- Abstract
The pinned optically aligned diagnostic dock (PODD) is a multi-configuration diagnostic platform designed to measure x-ray emission on the Z facility. The PODD houses two plasma emission acquisition (PEA) systems, which are aligned with a set of precision machined pins. The PEA systems are modular, allowing a single diagnostic housing to support several different diagnostics. The PEA configurations fielded to date include both time-resolved and time-integrated, 1D spatially resolving, elliptical crystal spectrometers, and time-integrated, 1D spatially resolving, convex crystal spectrometers. Additional proposed configurations include time-resolved, monochromatic mirrored pinhole imagers and arrays of filtered x-ray diodes, diamond photo-conducting diode detectors, and bolometers. The versatility of the PODD system will allow the diagnostic configuration of the Z facility to be changed without significantly adding to the turn-around time of the machine. Additionally, the PODD has been designed to allow instrument setup to be completed entirely off-line, leaving only a refined alignment process to be performed just prior to a shot, which is a significant improvement over the instrument the PODD replaces. Example data collected with the PODD are presented.
- Published
- 2012
- Full Text
- View/download PDF
48. Monitoring of phenolic compounds for the quality control of Melissa officinalis products by capillary electrophoresis.
- Author
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Acosta G, Arce S, Martínez LD, Llabot J, and Gomez MR
- Subjects
- Argentina, Cinnamates analysis, Coumaric Acids analysis, Depsides analysis, Electrophoresis, Capillary instrumentation, Pharmaceutical Preparations isolation & purification, Pharmaceutical Preparations standards, Plant Extracts isolation & purification, Plant Extracts standards, Plants, Medicinal chemistry, Quality Control, Reference Standards, Reproducibility of Results, Rosmarinic Acid, Electrophoresis, Capillary methods, Melissa chemistry, Phenols analysis, Plant Leaves chemistry
- Abstract
Introduction: Official assays for the quality control of Melissa officinalis L. (Lamiaceae) leaves establish the quantification of total hydroxycinnamic derivatives expressed as rosmarinic acid., Objective: The goal of this work was to develop a simple, fast and reliable method for monitoring the phenolic composition in herbs from the Lamiaceae family and for rapidly detecting M. officinalis adulteration or substitution in commercial medicinal samples in Argentina., Methodology: A capillary zone electrophoresis (CZE) method was performed under the following conditions: the background electrolyte (BGE) consisted of 20 m m sodium tetraborate buffer, pH 9.2; the applied voltage was 25 kV; the capillary and sample temperatures were kept at 25 °C; the hydrodynamic mode was selected for the sample injection (3.45 kPa during 5 s)., Results: A CZE method that achieved the separation and simultaneous determination of eight related phenolic compounds in less than 11 min was optimised for application to control quality analysis of M. officinalis-based products. The method was validated according to the US Federal Drug Agency requirements and offers advantages in terms of analysis time, cost and operation., Conclusions: The proposed methodology can be applied to the standardisation and quality control of plant material and phytopharmaceutical products derived from the Lamiaceae family, as indicated by the results obtained in the analysis of commercial medicinal products in Argentina., (Copyright © 2011 John Wiley & Sons, Ltd.)
- Published
- 2012
- Full Text
- View/download PDF
49. Changes in insulin sensitivity and body weight during and after peginterferon and ribavirin therapy for hepatitis C.
- Author
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Eslam M, Aparcero R, and Gomez MR
- Published
- 2011
50. Successful treatment of membranous glomerulonephritis with rituximab in calcineurin inhibitor-dependent patients.
- Author
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Segarra A, Praga M, Ramos N, Polanco N, Cargol I, Gutierrez-Solis E, Gomez MR, Montoro B, and Camps J
- Subjects
- Adult, Aged, Antibodies, Monoclonal, Murine-Derived, Biopsy, Enzyme Inhibitors adverse effects, Female, Follow-Up Studies, Glomerulonephritis, Membranous pathology, Humans, Kidney pathology, Male, Middle Aged, Mycophenolic Acid administration & dosage, Mycophenolic Acid adverse effects, Pilot Projects, Proteinuria drug therapy, Proteinuria pathology, Remission Induction, Rituximab, Substance Withdrawal Syndrome drug therapy, Substance Withdrawal Syndrome prevention & control, Antibodies, Monoclonal administration & dosage, Calcineurin Inhibitors, Enzyme Inhibitors administration & dosage, Glomerulonephritis, Membranous drug therapy, Immunologic Factors administration & dosage, Mycophenolic Acid analogs & derivatives
- Abstract
Background and Objectives: Calcineurin inhibitors (CNIs) induce remission of proteinuria in most nephrotic patients with membranous glomerulonephropathy (MGN). However, 60% of patients become treatment dependent and are at risk of chronic nephrotoxicity. The aim of this study was to evaluate the efficacy of rituximab in patients with long-term dependence on CNIs., Design, Setting, Participants, and Measurements: Thirteen patients with MGN, normal renal function, and proven dependence on CNIs, despite previous treatment with other immunosuppressant drugs, received a single trial of four weekly doses of rituximab (375 mg/m(2)). Outcome measures were the percentage of patients with CNI withdrawal and no evidence of relapse and the percentage of patients with complete or partial remission 30 mo after CNI withdrawal., Results: After rituximab, proteinuria decreased significantly (2.5 +/- 0,76 basal versus 0.85 +/- 0.17 at 6 mo; P = .0003). CNIs and other immunosuppressant drugs could be withdrawn in all patients with no evidence of relapse. After CNI withdrawal, GFR increased significantly (90.3 +/- 15 basal to 106.4 +/- 20 at 3 mo with a mean increase of 15.3% [range 0-20]). Three patients suffered a relapse of nephrotic proteinuria 19, 23, and 28 mo after rituximab treatment; all were successfully treated with a second course of rituximab. At 30 mo, all patients were in remission., Conclusions: In patients with MGN with long-term CNI dependence, rituximab can be an effective tool to overcome dependence on CNI, thus avoiding the risk of nephrotoxicity related to the chronic exposure to these drugs.
- Published
- 2009
- Full Text
- View/download PDF
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