75 results on '"O. Soto"'
Search Results
2. Current Status and Challenges of Stem Cell Treatment for Alzheimer’s Disease
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Fidel De La Cruz López, Ignacio Villanueva-Fierro, Luis O Soto-Rojas, Heidy Reyes-Sabater, José Luna-Muñoz, Mar Pacheco-Herrero, and Linda Garcés-Ramírez
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Amyloid ,Tau protein ,Neocortex ,Plaque, Amyloid ,tau Proteins ,Review ,Disease ,amyloid-β ,Hippocampus ,tau protein ,Progressive supranuclear palsy ,Alzheimer Disease ,Humans ,Medicine ,Senile plaques ,neural stem cells ,therapy ,biology ,business.industry ,Stem Cells ,General Neuroscience ,Neurodegeneration ,neurodegeneration ,Neurofibrillary Tangles ,General Medicine ,medicine.disease ,Psychiatry and Mental health ,Clinical Psychology ,medicine.anatomical_structure ,nervous system ,Government Regulation ,biology.protein ,Geriatrics and Gerontology ,Stem cell ,business ,Alzheimer’s disease ,Neuroscience ,Frontotemporal dementia - Abstract
Neurodegenerative diseases called tauopathies, such as Alzheimer’s disease (AD), frontotemporal dementia, progressive supranuclear palsy, and Parkinson’s disease, among others, are characterized by the pathological processing and accumulation of tau protein. AD is the most prevalent neurodegenerative disease and is characterized by two lesions: neurofibrillary tangles (NFTs) and neuritic plaques. The presence of NFTs in the hippocampus and neocortex in early and advanced stages, respectively, correlates with the patient’s cognitive deterioration. So far, no drugs can prevent, decrease, or limit neuronal death due to abnormal pathological tau accumulation. Among potential non-pharmacological treatments, physical exercise has been shown to stimulate the development of stem cells (SCs) and may be useful in early stages. However, this does not prevent neuronal death from the massive accumulation of NFTs. In recent years, SCs therapies have emerged as a promising tool to repopulate areas involved in cognition in neurodegenerative diseases. Unfortunately, protocols for SCs therapy are still being developed and the mechanism of action of such therapy remains unclear. In this review, we show the advances and limitations of SCs therapy. Finally, we provide a critical analysis of its clinical use for AD.
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- 2021
3. Neurovascular dysfunction and vascular amyloid accumulation as early events in Alzheimer's disease
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Paola Flores-Rodríguez, B. Berenice Campa-Córdoba, Marely Bravo-Muñoz, Miguel Ángel Ontiveros-Torres, Mar Pacheco-Herrero, Luis O Soto-Rojas, Linda Garcés-Ramírez, Ricardo Apátiga-Pérez, Nabil Itzi Luna-Viramontes, José Francisco Montiel-Sosa, Ignacio Villanueva-Fierro, José Luna-Muñoz, Elvis Cuevas, and Fidel de la Cruz
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medicine.medical_specialty ,Pathology ,Amyloid beta-Peptides ,Neurology ,Amyloid ,business.industry ,Neurodegeneration ,Brain ,Plaque, Amyloid ,medicine.disease ,Biochemistry ,Cerebral Amyloid Angiopathy ,Cellular and Molecular Neuroscience ,medicine.anatomical_structure ,Cerebral blood flow ,Alzheimer Disease ,medicine ,Humans ,Neurology (clinical) ,Cerebral amyloid angiopathy ,Pericyte ,Senile plaques ,business ,Neuroinflammation - Abstract
Alzheimer's disease (AD) is clinically characterized by a progressive loss of cognitive functions and short-term memory. AD patients present two distinctive neuropathological lesions: neuritic plaques and neurofibrillary tangles (NFTs), constituted of beta-amyloid peptide (Aβ) and phosphorylated and truncated tau proteins. Aβ deposits around cerebral blood vessels (cerebral amyloid angiopathy, CAA) is a major contributor to vascular dysfunction in AD. Vascular amyloid deposits could be early events in AD due to dysfunction in the neurovascular unit (NVU) and the blood-brain barrier (BBB), deterioration of the gliovascular unit, and/or decrease of cerebral blood flow (CBF). These pathological events can lead to decreased Aβ clearance, facilitate a neuroinflammatory environment as well as synaptic dysfunction and, finally, lead to neurodegeneration. Here, we review the histopathological AD hallmarks and discuss the two-hit vascular hypothesis of AD, emphasizing the role of neurovascular dysfunction as an early factor that favors vascular Aβ aggregation and neurodegeneration. Addtionally, we emphasize that pericyte degeneration is a key and early element in AD that can trigger amyloid vascular accumulation and NVU/BBB dysfunction. Further research is required to better understand the early pathophysiological mechanisms associated with NVU alteration and CAA to generate early biomarkers and timely treatments for AD.
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- 2021
4. Search for a New B-L Z^{'} Gauge Boson with the NA64 Experiment at CERN
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Yu M, Andreev, D, Banerjee, B, Banto Oberhauser, J, Bernhard, P, Bisio, V E, Burtsev, A, Celentano, N, Charitonidis, A G, Chumakov, D, Cooke, P, Crivelli, E, Depero, A V, Dermenev, S V, Donskov, R R, Dusaev, T, Enik, V N, Frolov, A, Gardikiotis, S G, Gerassimov, S N, Gninenko, M, Hösgen, M, Jeckel, V A, Kachanov, A E, Karneyeu, G, Kekelidze, B, Ketzer, D V, Kirpichnikov, M M, Kirsanov, V N, Kolosov, S G, Kovalenko, V A, Kramarenko, L V, Kravchuk, N V, Krasnikov, S V, Kuleshov, V E, Lyubovitskij, V, Lysan, L, Marsicano, V A, Matveev, Yu V, Mikhailov, L, Molina Bueno, D V, Peshekhonov, V A, Polyakov, B, Radics, A, Rubbia, K M, Samalantin, V D, Samoylenko, H, Sieber, D, Shchukin, O, Soto, V O, Tikhomirov, I V, Tlisova, A N, Toropin, B I, Vasilishin, P V, Volkov, V Yu, Volkov, I, Voronchikhin, and J, Zamora-Saá
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A search for a new Z^{'} gauge boson associated with (un)broken B-L symmetry in the keV-GeV mass range is carried out for the first time using the missing-energy technique in the NA64 experiment at the CERN SPS. From the analysis of the data with 3.22×10^{11} electrons on target collected during 2016-2021 runs, no signal events were found. This allows us to derive new constraints on the Z^{'}-e coupling strength, which, for the mass range 0.3≲m_{Z^{'}}≲100 MeV, are more stringent compared to those obtained from the neutrino-electron scattering data.
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- 2022
5. Pregnancy‐induced physiological cardiac hypertrophy regulates the expression of perilipin isoforms
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Jose G. Soñanez‐Organis, Denisse G. Verduzuco‐Avila, Diana L. Padila‐Borquez, Jose A. Godoy‐Lugo, Jesús A. Rosas‐Rodríguez, Angel O. Soto‐Duarte, Enrico A. Ruiz‐Castillo, and Rudy M. Ortiz
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Genetics ,Molecular Biology ,Biochemistry ,Biotechnology - Published
- 2022
6. Autophagy: A Key Regulator of Homeostasis and Disease: An Overview of Molecular Mechanisms and Modulators
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Laura Gómez-Virgilio, Maria-del-Carmen Silva-Lucero, Diego-Salvador Flores-Morelos, Jazmin Gallardo-Nieto, Gustavo Lopez-Toledo, Arminda-Mercedes Abarca-Fernandez, Ana-Elvira Zacapala-Gómez, José Luna-Muñoz, Francisco Montiel-Sosa, Luis O. Soto-Rojas, Mar Pacheco-Herrero, and Maria-del-Carmen Cardenas-Aguayo
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Mammals ,SARS-CoV-2 ,Autophagy ,Animals ,COVID-19 ,Homeostasis ,Humans ,General Medicine ,Lysosomes - Abstract
Autophagy is a highly conserved lysosomal degradation pathway active at basal levels in all cells. However, under stress conditions, such as a lack of nutrients or trophic factors, it works as a survival mechanism that allows the generation of metabolic precursors for the proper functioning of the cells until the nutrients are available. Neurons, as post-mitotic cells, depend largely on autophagy to maintain cell homeostasis to get rid of damaged and/or old organelles and misfolded or aggregated proteins. Therefore, the dysfunction of this process contributes to the pathologies of many human diseases. Furthermore, autophagy is highly active during differentiation and development. In this review, we describe the current knowledge of the different pathways, molecular mechanisms, factors that induce it, and the regulation of mammalian autophagy. We also discuss its relevant role in development and disease. Finally, here we summarize several investigations demonstrating that autophagic abnormalities have been considered the underlying reasons for many human diseases, including liver disease, cardiovascular, cerebrovascular diseases, neurodegenerative diseases, neoplastic diseases, cancers, and, more recently, infectious diseases, such as SARS-CoV-2 caused COVID-19 disease.
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- 2022
7. LPS Triggers Acute Neuroinflammation and Parkinsonism Involving NLRP3 Inflammasome Pathway and Mitochondrial CI Dysfunction in the Rat
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Irais E. Valenzuela-Arzeta, Luis O. Soto-Rojas, Yazmin M. Flores-Martinez, Karen M. Delgado-Minjares, Bismark Gatica-Garcia, Juan U. Mascotte-Cruz, Porfirio Nava, Omar Emiliano Aparicio-Trejo, David Reyes-Corona, Irma A. Martínez-Dávila, M. E. Gutierrez-Castillo, Armando J. Espadas-Alvarez, Carlos E. Orozco-Barrios, and Daniel Martinez-Fong
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senescence ,Organic Chemistry ,caspase-1 ,General Medicine ,Catalysis ,neuroinflammation ,Computer Science Applications ,motor behavior deficits ,Inorganic Chemistry ,neurotrophic A2 astrocytes ,neurotoxic A1 astrocytes ,Parkinson’s disease ,Physical and Theoretical Chemistry ,Molecular Biology ,Spectroscopy - Abstract
Whether neuroinflammation leads to dopaminergic nigrostriatal system neurodegeneration is controversial. We addressed this issue by inducing acute neuroinflammation in the substantia nigra (SN) with a single local administration (5 µg/2 µL saline solution) of lipopolysaccharide (LPS). Neuroinflammatory variables were assessed from 48 h to 30 days after the injury by immunostaining for activated microglia (Iba-1 +), neurotoxic A1 astrocytes (C3 + and GFAP +), and active caspase-1. We also evaluated NLRP3 activation and Il-1β levels by western blot and mitochondrial complex I (CI) activity. Fever and sickness behavior was assessed for 24 h, and motor behavior deficits were followed up until day 30. On this day, we evaluated the cellular senescence marker β-galactosidase (β-Gal) in the SN and tyrosine hydroxylase (TH) in the SN and striatum. After LPS injection, Iba-1 (+), C3 (+), and S100A10 (+) cells were maximally present at 48 h and reached basal levels on day 30. NLRP3 activation occurred at 24 h and was followed by a rise of active caspase-1 (+), Il-1β, and decreased mitochondrial CI activity until 48 h. A significant loss of nigral TH (+) cells and striatal terminals was associated with motor deficits on day 30. The remaining TH (+) cells were β-Gal (+), suggesting senescent dopaminergic neurons. All the histopathological changes also appeared on the contralateral side. Our results show that unilaterally LPS-induced neuroinflammation can cause bilateral neurodegeneration of the nigrostriatal dopaminergic system and are relevant for understanding Parkinson’s disease (PD) neuropathology.
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- 2023
8. Alzheimer’s Disease: An Updated Overview of Its Genetics
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Jesús Andrade-Guerrero, Alberto Santiago-Balmaseda, Paola Jeronimo-Aguilar, Isaac Vargas-Rodríguez, Ana Ruth Cadena-Suárez, Carlos Sánchez-Garibay, Glustein Pozo-Molina, Claudia Fabiola Méndez-Catalá, Maria-del-Carmen Cardenas-Aguayo, Sofía Diaz-Cintra, Mar Pacheco-Herrero, José Luna-Muñoz, and Luis O. Soto-Rojas
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Inorganic Chemistry ,Organic Chemistry ,General Medicine ,Physical and Theoretical Chemistry ,Molecular Biology ,Spectroscopy ,Catalysis ,Computer Science Applications - Abstract
Alzheimer’s disease (AD) is the most common neurodegenerative disease in the world. It is classified as familial and sporadic. The dominant familial or autosomal presentation represents 1–5% of the total number of cases. It is categorized as early onset (EOAD
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- 2023
9. PPARs and Their Neuroprotective Effects in Parkinson’s Disease: A Novel Therapeutic Approach in α-Synucleinopathy?
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Isaac Pérez-Segura, Alberto Santiago-Balmaseda, Luis Daniel Rodríguez-Hernández, Adriana Morales-Martínez, Hilda Angélica Martínez-Becerril, Paola A. Martínez-Gómez, Karen M. Delgado-Minjares, Citlaltepetl Salinas-Lara, Irma A. Martínez-Dávila, Magdalena Guerra-Crespo, Francisca Pérez-Severiano, and Luis O. Soto-Rojas
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Inorganic Chemistry ,Organic Chemistry ,General Medicine ,Physical and Theoretical Chemistry ,Molecular Biology ,Spectroscopy ,Catalysis ,Computer Science Applications - Abstract
Parkinson’s disease (PD) is the most common α-synucleinopathy worldwide. The pathognomonic hallmark of PD is the misfolding and propagation of the α-synuclein (α-syn) protein, observed in post-mortem histopathology. It has been hypothesized that α-synucleinopathy triggers oxidative stress, mitochondrial dysfunction, neuroinflammation, and synaptic dysfunction, leading to neurodegeneration. To this date, there are no disease-modifying drugs that generate neuroprotection against these neuropathological events and especially against α-synucleinopathy. Growing evidence suggests that peroxisome proliferator-activated receptor (PPAR) agonists confer neuroprotective effects in PD, however, whether they also confer an anti-α-synucleinopathy effect is unknown. Here we analyze the reported therapeutic effects of PPARs, specifically the gamma isoform (PPARγ), in preclinical PD animal models and clinical trials for PD, and we suggest possible anti-α-synucleinopathy mechanisms acting downstream from these receptors. Elucidating the neuroprotective mechanisms of PPARs through preclinical models that mimic PD as closely as possible will facilitate the execution of better clinical trials for disease-modifying drugs in PD.
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- 2023
10. Editorial: Sustainable Production of Ethnic Alcoholic Beverages
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Nicolás O. Soto-Cruz, Manuel R. Kirchmayr, and Avinash Sharma
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Global and Planetary Change ,Ecology ,Horticulture ,Management, Monitoring, Policy and Law ,Agronomy and Crop Science ,Food Science - Published
- 2022
11. Cerebral dopamine neurotrophic factor transfection in dopamine neurons using neurotensin-polyplex nanoparticles reverses 6-hydroxydopamine-induced nigrostriatal neurodegeneration
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Manuel A. Fernandez-Parrilla, Minerva Maldonado-Berny, Yazmin M. Flores-Martinez, Jose Ayala-Davila, David Reyes-Corona, Claudia Luna-Herrera, Daniel Martinez-Fong, Rasajna Nadella, Maria E. Gutierrez-Castillo, Jaime Santoyo-Salazar, Luis O Soto-Rojas, Juan Antonio González-Barrios, Irma A Martínez-Dávila, Gonzalo Flores, Michael J. Bannon, Armando J. Espadas-Alvarez, Lourdes Escobedo, and Porfirio Nava
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medicine.medical_specialty ,neurotrophic therapy ,Parkinson's disease ,neuronal cytoskeleton ,Substantia nigra ,Striatum ,axonal growth ,brain-derived neurotrophic factor ,gene delivery ,nanoparticles ,neuritogenesis ,neuroregeneration ,neurorestoration ,parkinson’s disease ,reinnervation ,substantia nigra ,Developmental Neuroscience ,Neurotrophic factors ,Dopamine ,Internal medicine ,medicine ,RC346-429 ,Cerebral dopamine neurotrophic factor ,Brain-derived neurotrophic factor ,Chemistry ,Pars compacta ,medicine.disease ,Endocrinology ,nervous system ,Neurology. Diseases of the nervous system ,medicine.drug ,Research Article - Abstract
Overexpression of neurotrophic factors in nigral dopamine neurons is a promising approach to reverse neurodegeneration of the nigrostriatal dopamine system, a hallmark in Parkinson’s disease. The human cerebral dopamine neurotrophic factor (hCDNF) has recently emerged as a strong candidate for Parkinson’s disease therapy. This study shows that hCDNF expression in dopamine neurons using the neurotensin-polyplex nanoparticle system reverses 6-hydroxydopamine-induced morphological, biochemical, and behavioral alterations. Three independent electron microscopy techniques showed that the neurotensin-polyplex nanoparticles containing the hCDNF gene, ranging in size from 20 to 150 nm, enabled the expression of a secretable hCDNF in vitro. Their injection in the substantia nigra compacta on day 21 after the 6-hydroxydopamine lesion resulted in detectable hCDNF in dopamine neurons, whose levels remained constant throughout the study in the substantia nigra compacta and striatum. Compared with the lesioned group, tyrosine hydroxylase-positive (TH+) nigral cell population and TH+ fiber density rose in the substantia nigra compacta and striatum after hCDNF transfection. An increase in βIII-tubulin and growth-associated protein 43 phospho-S41 (GAP43p) followed TH+ cell recovery, as well as dopamine and its catabolite levels. Partial reversal (80%) of drug-activated circling behavior and full recovery of spontaneous motor and non-motor behavior were achieved. Brain-derived neurotrophic factor recovery in dopamine neurons that also occurred suggests its participation in the neurotrophic effects. These findings support the potential of nanoparticle-mediated hCDNF gene delivery to develop a disease-modifying treatment against Parkinson’s disease. The Institutional Animal Care and Use Committee of Centro de Investigación y de Estudios Avanzados approved our experimental procedures for animal use (authorization No. 162-15) on June 9, 2019.
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- 2021
12. Measurement of deeply virtual Compton scattering off He4 with the CEBAF Large Acceptance Spectrometer at Jefferson Lab
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T. A. Forest, D. P. Watts, H. Egiyan, F. Sabatié, D. Bulumulla, A. Filippi, Aditya R. Khanal, M. Khandaker, G. Rosner, Andrea Bianconi, D. Payette, Jo H. S., Y. Ghandilyan, H. Voskanyan, W. Kim, R. A. Schumacher, P. Lenisa, S. Bültmann, W. J. Briscoe, E. Pasyuk, Maxime Defurne, N. Markov, B. Torayev, R. Dupre, D. G. Ireland, Carlos A. Salgado, V. Crede, B. A. Clary, M. Contalbrigo, K. Livingston, M. Battaglieri, M. J. Amaryan, B. Yale, G. Costantini, S. Stepanyan, V. P. Kubarovsky, A. Kim, R. De Vita, J. Rowley, Whitney Armstrong, Simonetta Liuti, Krishna Neupane, J. Poudel, O. Pogorelko, K. Wei, S. Fegan, P. Eugenio, Dustin Keller, R. Paremuzyan, G. Khachatryan, Volker D. Burkert, M. L. Kabir, H. Atac, T. B. Hayward, Paolo Rossi, A. S. Biselli, R. Wishart, A. Celentano, R. W. Gothe, M. Guidal, K. Hafidi, V. Mokeev, Larry Weinstein, Gerard Gilfoyle, L. Venturelli, Michael Paolone, E. L. Isupov, D. Sokhan, M. Ehrhart, M. Caudron, M. Osipenko, S. Boiarinov, I. J. D. MacGregor, F. Bossu, A. Vossen, G. Ciullo, Fatiha Benmokhtar, Y. Prok, D. S. Carman, M. Holtrop, O. Soto, N. A. Baltzell, Nikos Sparveris, X. Wei, H. Hakobyan, M. H. Wood, E. Voutier, J. Ritman, S. Diehl, N. Dashyan, A. El Alaoui, B. McKinnon, Luciano Pappalardo, M. Bondì, K. A. Griffioen, Yordanka Ilieva, C. Ayerbe Gayoso, Nicholas Zachariou, J. C. Carvajal, Y. Perrin, V. Chesnokov, L. Barion, U. Shrestha, M. Mirazita, L. Lanza, K. Hicks, W. Phelps, V. Mascagna, D. Marchand, S. Niccolai, Alessandro Rizzo, Alexander Schmidt, I. Bedlinskiy, M. Ripani, P. Chatagnon, M. Ungaro, K. Joo, V. Sergeyeva, J. Zhang, F. X. Girod, N. Tyler, C. Djalali, T. Chetry, S. Strauch, L. Elouadrhiri, S. Joosten, I. I. Strakovsky, A. Deur, D. G. Jenkins, A. Hobart, M. Leali, T. R. O'Connell, N. Pivnyuk, A. D'Angelo, L. El Fassi, S. E. Kuhn, M. Hattawy, P. L. Cole, Martin K. Mayer, A. Kripko, and Y. G. Sharabian
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Nuclear physics ,Physics ,Spectrometer ,010308 nuclear & particles physics ,0103 physical sciences ,Compton scattering ,Perturbative QCD ,010306 general physics ,01 natural sciences - Published
- 2021
13. Elucidating the Neuropathologic Mechanisms of SARS-CoV-2 Infection
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Mar Pacheco-Herrero, Luis O. Soto-Rojas, Charles R. Harrington, Yazmin M. Flores-Martinez, Marcos M. Villegas-Rojas, Alfredo M. León-Aguilar, Paola A. Martínez-Gómez, B. Berenice Campa-Córdoba, Ricardo Apátiga-Pérez, Carolin N. Corniel-Taveras, Jesabelle de J. Dominguez-García, Víctor Manuel Blanco-Alvarez, and José Luna-Muñoz
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Exacerbation ,viruses ,Central nervous system ,Review ,Disease ,Blood–brain barrier ,medicine.disease_cause ,lcsh:RC346-429 ,Virus ,neuroinflammation ,Pandemic ,storm cytokine syndrome ,medicine ,neurological alterations ,neurodegenerative diseases ,lcsh:Neurology. Diseases of the nervous system ,Neuroinflammation ,Coronavirus ,SARS-CoV-2 ,business.industry ,Alzheimer's disease ,blood-brain barrier ,medicine.anatomical_structure ,Neurology ,Immunology ,Neurology (clinical) ,business - Abstract
The current pandemic caused by the new severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has become a public health emergency. To date, March 1, 2021, coronavirus disease 2019 (COVID-19) has caused about 114 million accumulated cases and 2.53 million deaths worldwide. Previous pieces of evidence suggest that SARS-CoV-2 may affect the central nervous system (CNS) and cause neurological symptoms in COVID-19 patients. It is also known that angiotensin-converting enzyme-2 (ACE2), the primary receptor for SARS-CoV-2 infection, is expressed in different brain areas and cell types. Thus, it is hypothesized that infection by this virus could generate or exacerbate neuropathological alterations. However, the molecular mechanisms that link COVID-19 disease and nerve damage are unclear. In this review, we describe the routes of SARS-CoV-2 invasion into the central nervous system. We also analyze the neuropathologic mechanisms underlying this viral infection, and their potential relationship with the neurological manifestations described in patients with COVID-19, and the appearance or exacerbation of some neurodegenerative diseases.
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- 2021
14. Observation of Beam Spin Asymmetries in the Process ep→e′π+π−X with CLAS12
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G. Niculescu, D. Bulumulla, G. Ciullo, Aditya R. Khanal, A. El Alaoui, S. Niccolai, E. L. Isupov, D. S. Carman, F. X. Girod, Nikos Sparveris, K. A. Griffioen, D. G. Ireland, V. I. Mokeev, M. Contalbrigo, V. Crede, Nicholas Zachariou, J. C. Carvajal, Sung-Sik Lee, X. Wei, S. Boiarinov, Andrea Bianconi, P. Lenisa, C. Dilks, Fatiha Benmokhtar, O. Soto, T. B. Hayward, M. Osipenko, R. Paremuzyan, L. Marsicano, Maxime Defurne, B. A. Clary, Latifa Elouadrhiri, A. Movsisyan, N. Tyler, N. Markov, P. L. Cole, N. Dashyan, K. Hicks, I. J. D. MacGregor, S. Strauch, D. I. Glazier, V. P. Kubarovsky, Michael Paolone, Krishna Neupane, H. Hakobyan, F. Bossu, R. Tyson, J. Ritman, Eugene Pasyuk, R. De Vita, D. Marchand, H. S. Jo, H. Avakian, Eric Voutier, L. Lanza, S. Diehl, C. Salgado, A. A. Golubenko, H. Atac, H. Voskanyan, G. Costantini, W. J. Briscoe, L. Barion, S. E. Kuhn, M. Hattawy, A. Vossen, M. Guidal, A. D'Angelo, Dustin Keller, M Ehrhart, P. Naidoo, T. Chetry, D. P. Watts, P. Chatagnon, Y. Prok, U. Shrestha, Michael Wood, F. Sabatié, M. Holtrop, Chaden Djalali, L. El Fassi, V. Mascagna, G. Gavalian, K. Hafidi, A. Filippi, B. A. Raue, Luciano Pappalardo, C. Ayerbe Gayoso, I. Bedlinskiy, Michael Dugger, W. Phelps, G. Angelini, P. Rossi, K. Wei, S. Joosten, S. Fegan, M. Leali, A. Celentano, R. W. Gothe, P. Nadel-Turonski, M. Khachatryan, N. A. Baltzell, K. Livingston, Alessandro Rizzo, Axel Schmidt, T. R. O'Connell, William Brooks, I. I. Strakovsky, F. Hauenstein, A. Kim, L. Venturelli, Jie Zhang, Y. Gotra, Z. E. Meziani, A. Deur, B. Yale, E.P. Segarra, S. Nanda, A. Kripko, T. A. Forest, S. Stepanyan, Y. G. Sharabian, M. Ripani, R. Dupré, M. Bondì, M. Battaglieri, O. Pogorelko, J. Rowley, Volker D. Burkert, A. S. Biselli, A. Hobart, S. Adhikari, B. McKinnon, M. Mirazita, Gerard Gilfoyle, D. Sokhan, M. Arratia, Hovanes Egiyan, C. Munoz Camacho, M. Ungaro, K. Joo, A. Thornton, and W. Kim
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Quark ,Physics ,Spectrometer ,Proton ,Nuclear Theory ,General Physics and Astronomy ,Deep inelastic scattering ,01 natural sciences ,Gluon ,Nuclear physics ,0103 physical sciences ,Cathode ray ,Physics::Accelerator Physics ,High Energy Physics::Experiment ,Nuclear Experiment ,010306 general physics ,Beam (structure) ,Spin-½ - Abstract
The observation of beam spin asymmetries in two-pion production in semi-inclusive deep inelastic scattering off an unpolarized proton target is reported for the first time. The data presented here were taken in the fall of 2018 with the CLAS12 spectrometer using a 10.6 GeV longitudinally spin-polarized electron beam delivered by CEBAF at JLab. The measured asymmetries provide the first observation of a signal that can be used to extract the PDF $e(x)$ in a collinear framework and the helicity-dependent two-pion fragmentation function $G_1^\perp$.
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- 2021
15. Long‐Term Safety of Rituximab in Patients With Rheumatoid Arthritis: Results of a Five‐Year Observational Study
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Kevin L. Winthrop, Kenneth Saag, Matthew D. Cascino, Jinglan Pei, Ani John, Angelika Jahreis, Tmirah Haselkorn, Daniel E. Furst, M. Abdulky, M. Abeles, H. Adelglass, A. Ahmed, J. Alloway, J. Alper, A. Anand, J. Anderson, M. Arora, A. Askari, S. Baca, D. Bacha, S. Bagheri, S. Ballou, R. Bennett, L. Bidula, H. Blumstein, M. Bognar, A. Bohan, C. Boniske, M. Borofsky, E. Box, A. Braun, T. Brennan, L. Brent, I. Cabalar, N. Carteron, K. Chaudhary, A. Chauhan, M. Cima, A. Cochinwala, H. Cohen, K. Colburn, D. Conaway, C. Danning, K. Dao, J. Dean, I. Diab, R. Diegel, R. Ditzian‐Kadanoff, J. Dowd, C. Dugowson, A. Eggebeen, H. El‐Kadi, H. Feinberg, M. Feinman, J. Feinstein, A. Fischer, B. Foad, M. Fondal, S. Fraser, A. Fraser, P. Freeman, M. Garber, A. Goldstein, S. Golombek, N. Greenstein, M. Greenwald, C. Hakim, J. Halla, D. Hallegua, K. Han, B. Harris, H. Hauptman, J. Hirsh, M. Hoffman, J. Huntwork, M. Husni, F. Hyer, R. Hymowitz, R. Jones, S. Kanagasegar, J. Kappes, R. Keating, G. Kelly, J. Kim, C. King, D. Klashman, C. Knee, K. Kolba, G. Krick, H. Krug, U. Kumar, S. Lakhanpal, T. Lang, S. Lauter, T. Lawrence Ford, W. Lee, Y. Lee, J. Leisen, J. Levine, R. Lidman, J. Lipstate, J. Malinak, R. Marcus, D. Martin, C. Mehta, G. Melton, S. Metyas, K. Miller, R. Moidel, C. Moore, J. Mossell, G. Munoz, F. Murphy, A. Nami, J. Nascimento, N. Neal, R. Neiman, C. Neuwelt, P. Nguyen, M. Niemer, K. Oelke, M. Oza, S. Pachaidee, S. Patel, S. Pegram, M. Penmetcha, J. Perkins, A. Perl, L. Peterson, R. Pittsley, K. Portnoff, D. Rahmani, N. Raja, W. Ratnoff, M. Rezaian, C. Rhea, D. Rice, D. Ridley, A. Rivadeneira, W. Rizzo, G. Roane, P. Rocca, M. Rosen, W. Saikali, M. Saitta, A. Sankoorikal, P. Saway, P. Schneider, S. Schwartzman, C. Scoville, W. Shergy, W Shiel, R. Shurmur, D. Sikes, A. Singhal, A. Snyder, S. Songcharoen, M. Sosenko, O. Soto Raices, N. Stahl, K. Stark, M. Strachan, A. Stupi, N. Sullivan, R. Sylvester, D. Tabechian, C. Tagoe, P. Taylor, S. Thakker, M. Thakor, N. Thakur, W. Tidmore, M. Toth, D. Trostle, J. Udell, M. Van de Stouwe, R. Venuturupalli, D. Weiss, K. Weselman, D. Winn, C. Yung, E. Zable, and B. Zamiri
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030203 arthritis & rheumatology ,medicine.medical_specialty ,education.field_of_study ,business.industry ,Incidence (epidemiology) ,Population ,Rheumatoid Arthritis ,medicine.disease ,03 medical and health sciences ,0302 clinical medicine ,Rheumatology ,Concomitant ,Rheumatoid arthritis ,Internal medicine ,Cohort ,medicine ,Original Article ,Rituximab ,Adverse effect ,business ,education ,medicine.drug ,Cohort study - Abstract
Objective To evaluate the long‐term safety of rituximab in an observational cohort of patients with rheumatoid arthritis (RA) who had an inadequate response to ≥1 anti–tumor necrosis factor therapy in the US (SUNSTONE [Study of the Safety of Rituxan in Patients With Rheumatoid Arthritis After an Inadequate Response to Previous Anti‐TNF Therapy] registry). Methods In this prospective, observational cohort study, patients received rituximab according to their physician's standard practice and were evaluated at standard‐of‐care follow‐up visits at least every 6 months. The primary outcome was the incidence of protocol‐defined significant infections. Secondary outcomes included serious adverse events potentially associated with rituximab, cardiovascular or thrombotic events, seizures, deaths, and pregnancies. Post hoc analyses assessed outcomes by concomitant medication use. Results Overall, 989 patients (safety‐evaluable population) received ≥1 dose of rituximab, with a total follow‐up of 3,844 patient‐years (mean duration 3.9 years). In total, 341 significant infections occurred in 197 patients (19.9%). The incidence rates (95% confidence intervals [95% CIs]) for significant infections, cardiovascular or thrombotic events, and seizures were 8.87 (95% CI 7.98–9.86), 1.95 (95% CI 1.56–2.45), and 0.18 (95% CI 0.09–0.38) per 100 patient‐years, respectively. The incidence of significant infections did not increase with time or with cumulative rituximab exposure. During the study, 64 patients died (crude mortality rate 1.66 per 100 patient‐years [95% CI 1.30–2.13]). The most common causes of death were infections (n = 19), malignancy (n = 14), and cardiovascular events (n = 13). Eight pregnancies were reported in 7 patients. Conclusion In patients with RA treated with rituximab for up to 5 years, the rates of significant infections were stable over time and higher in patients who received long‐term systemic steroid treatment.
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- 2019
16. AB1585-PARE DO PATIENT AND PHYSICIAN ASSESSMENTS OF A HEALTH CARE VISIT MATCH FOR HISPANIC/LATINX PATIENTS WITH RHEUMATOID ARTHRITIS IN THE UNITED STATES AND PUERTO RICO?
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D. Hernandez, J. Bravo, J. J. Maya, O. Soto-Raíces, A. Tapia, G. Valenzuela, W. B. Nowell, and S. Venkatachalam
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Rheumatology ,Immunology ,Immunology and Allergy ,General Biochemistry, Genetics and Molecular Biology - Abstract
BackgroundNonlinear associations in rheumatoid arthritis (RA) prevalence and sociodemographic indices suggest social determinants of health affect RA.1 RA screening tools have lower sensitivity and specificity for Hispanic/Latinx individuals compared with white individuals (77% vs 85% sensitivity and 45% vs 87% specificity).2 Hispanic/Latinx people also present to physicians later and with more severe RA.3 There is little research in this population to explain these differences or how they can be addressed. Because it is known the Hispanic/Latinx population has lower English-language proficiency, we hypothesized this is in part because of the lack of validated Spanish-language educational materials and research tools for RA.ObjectivesTo validate a Spanish-language patient-provider questionnaire (PPQ) for Hispanic/Latinx patients with RA that had previously been validated as concordant for primary care visits in Sweden.4To understand if rheumatologist and patient assessments for Hispanic/Latinx people with RA are concordant when using a Spanish-language digital PPQ.To determine if a Spanish-language rheumatologist-completed PPQ could be a proxy for patient impressions in a prospective clinical study.MethodsA Spanish-language PPQ for RA was created by translating 9 of 13 questions previously validated in the Swedish study,4 and adding a question about treating to target specific to RA. The survey was made available on tablet devices in 4 rheumatology clinics in the U.S. and Puerto Rico. Clinic staff obtained patient consent and gathered demographic information to generate a unique confidential identifier code for each visit, which was inputted into surveys on tablet devices. After the visit ended the patient and rheumatologist were each given the PPQ coded for that visit to complete independently of one another. The PPQs were submitted electronically to a secure database in which the visit code was the only identifier recorded.ResultsAcross 114 clinical visits, 96.75% of possible answers were recorded and were almost invariably positive with scores of 5 (strongly agree; 88%), 4 (agree; 12%), or 3 (neither agree nor disagree; 0.09%). Physicians responded with 4 (agree) more often than patients (18% vs 6% of responses). Responses from both patient and physician were available for (96.64%) of answered questions. Within these paired answers, 80.67% were concordant (same answer from both patient and physician). Physicians answered 4 when patients answered 5 in 76.5% of discordant responses (different ratings from patient and physician). Most physician ratings of 4 came from 1 of the 4 physicians involved and only 12.5% of patients were responsible for 75% of the patient responses of 4.ConclusionHispanic/Latinx patients with RA and their rheumatologist rated their communication, goal setting, and relationships extremely positively, making it difficult to evaluate true concordance and not possible to use rheumatologist-completed PPQs as proxy for patient assessments. Notably, ratings were substantially different from what is typically seen on Likert scales, which normally skew positively but with a normal distribution. This finding may reflect social determinants of health or cultural differences such as a social-desirability bias toward positive statements about physician-patient interactions. Heterogeneity within the participants is also a plausible explanation, considering that a distinct subset of respondents account for almost all responses below the 5 rating. Further research is needed to identify best practices for measuring treatment to target and patient-rheumatologist interactions in the Hispanic/Latinx population with RA.References[1]Safiri S, et al. Ann Rheum Dis. 2019;78(11):1463-71. doi:10.1136/annrheumdis-2019-215920[2]Potter J, et al. J Rheumatol. 2008;35(8):1545-9. PMID: 18597406[3]Riad M, et al. J Clin Rheumatol. 2019. doi:10.1097/RHU.0000000000001085[4]Ahlén GC, et al. Fam Pract. 2007;24(5):498503. doi.org/10.1093/fampra/cmm043AcknowledgementsWe wish to acknowledge the important contributions of our HOPE CAPE RA participants, including the patients and providers and Anne Sydor, PhD for her invaluable advice and help throughout the project.This project was funded by the Bristol Myers Squibb Foundation.Disclosure of InterestsDaniel Hernandez Grant/research support from: This project is supported by the Bristol Myers Squibb Foundation, Julio Bravo Grant/research support from: This project is supported by the Bristol Myers Squibb Foundation, Juan Jose Maya Grant/research support from: This project is supported by the Bristol Myers Squibb Foundation, Oscar Soto-Raíces Grant/research support from: This project is supported by the Bristol Myers Squibb Foundation, Angel Tapia Grant/research support from: This project is supported by the Bristol Myers Squibb Foundation, Guillermo Valenzuela Grant/research support from: This project is supported by the Bristol Myers Squibb Foundation, W. Benjamin Nowell Grant/research support from: This research was supported by the Bristol Myers Squibb Foundation, Shilpa Venkatachalam Grant/research support from: This project is supported by the Bristol Myers Squibb Foundation
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- 2022
17. Photoproduction of the f2(1270) Meson Using the CLAS Detector
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V. Mokeev, P. Eugenio, Vincent Mathieu, D. Heddle, R. A. Schumacher, M. Battaglieri, K. A. Griffioen, R. Paremuzyan, Laura Clark, L. Marsicano, L. Lanza, M. J. Amaryan, M Carver, G. Angelini, D. P. Watts, Gerard Gilfoyle, M. Osipenko, N. Gevorgyan, P. Lenisa, M. Contalbrigo, H. Egiyan, K. Livingston, R. Tyson, D. Sokhan, S. Stepanyan, I. J. D. MacGregor, F. X. Girod, S. Adhikari, Dustin Keller, F. Sabatié, B. McKinnon, G. Niculescu, G. Rosner, B. A. Clary, D. G. Ireland, V. Crede, D. Bulumulla, William Brooks, E. Munevar, Jie Zhang, T. B. Hayward, K. Hafidi, A. Filippi, W. Phelps, Z. E. Meziani, B. Yale, Aditya R. Khanal, L. Venturelli, M. Ehrhart, M. Khandaker, E. L. Isupov, Friedrich Klein, Alessandro Rizzo, A. Kim, Michael Paolone, S. Boiarinov, Andrea Bianconi, G. Ciullo, A. Pilloni, C. W. Kim, A. Celentano, R. W. Gothe, Y. Prok, C. E. Hyde, I. Bedlinskiy, A. El Alaoui, N. A. Baltzell, F. Bossu, T. Chetry, D. S. Carman, Nicholas Zachariou, H. S. Jo, U. Shrestha, J. C. Carvajal, H. Voskanyan, Z. W. Zhao, Fatiha Benmokhtar, Nikos Sparveris, X. Wei, W. J. Briscoe, O. Soto, V. Mascagna, Maxime Defurne, M. Holtrop, S. Joosten, S. Niccolai, D. Protopopescu, E. Voutier, Luciano Pappalardo, A. Movsisyan, R. De Vita, H. Hakobyan, O. Pogorelko, S. Strauch, J. Ritman, J. Rowley, A. I. Ostrovidov, P. Chatagnon, K. Wei, S. Diehl, C. Salgado, S. Fegan, H. Atac, Volker D. Burkert, C. Munoz Camacho, Eugene Pasyuk, A. S. Biselli, G. Gavalian, V. P. Kubarovsky, Krishna Neupane, M. Ripani, M. Hattawy, K. Hicks, N. Dashyan, Michael Dugger, Yordanka Ilieva, L. Barion, Barry Ritchie, R. Dupre, D. Marchand, M. Ungaro, G. V. Fedotov, Q. Huang, K. P. Adhikari, K. Joo, D. G. Jenkins, M. Leali, Axel Schmidt, I. I. Strakovsky, P. Nadel-Turonski, A. Deur, Mark W. Bondi, M. E. McCracken, N. Tyler, C. Djalali, A. D'Angelo, L. El Fassi, A. Kripko, Y. G. Sharabian, and P. L. Cole
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Quark ,Physics ,Spectrometer ,Meson ,High Energy Physics::Lattice ,Nuclear Theory ,Quark model ,Detector ,General Physics and Astronomy ,Quantum number ,01 natural sciences ,7. Clean energy ,Resonance (particle physics) ,Nuclear physics ,Pion ,0103 physical sciences ,High Energy Physics::Experiment ,Nuclear Experiment ,010306 general physics - Abstract
The quark structure of the f2(1270) meson has, for many years, been assumed to be a pure quark-antiquark (qq¯) resonance with quantum numbers JPC=2++. Recently, it was proposed that the f2(1270) is a molecular state made from the attractive interaction of two ρ mesons. Such a state would be expected to decay strongly to final states with charged pions due to the dominant decay ρ→π+π-, whereas decay to two neutral pions would likely be suppressed. Here, we measure for the first time the reaction γp→π0π0p, using the CEBAF Large Acceptance Spectrometer detector at Jefferson Lab for incident beam energies between 3.6 and 5.4 GeV. Differential cross sections, dσ/dt, for f2(1270) photoproduction are extracted with good precision due to low backgrounds and are compared to theoretical calculations.
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- 2021
18. Measurement of beam asymmetry for π−Δ++ photoproduction on the proton at Eγ=8.5GeV
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E. S. Smith, T. Erbora, Ilya Larin, V. V. Tarasov, J. Schwiening, K. Luckas, B. E. Cannon, A. Austregesilo, C. Fanelli, A. Hurley, H. Marukyan, J. Fitches, R.S. Pedroni, W. McGinley, C. A. Meyer, L. Guo, J. Reinhold, A. Ali, T. D. Beattie, S. Furletov, M. M. Dalton, A. Smith, Z. Zhao, M. M. Ito, G. Rodriguez, F. Barbosa, D. Romanov, W. J. Briscoe, V. A. Matveev, A. M. Schertz, D. G. Ireland, V. Crede, T. Daniels, L. Gan, H. Egiyan, B. C.L. Sumner, A. LaDuke, G. J. Lolos, C. S. Akondi, V. Lyubovitskij, S. Somov, S. Fegan, R. Barsotti, S. Adhikari, M. R. Shepherd, A. Gasparian, E. Pooser, T. Whitlatch, N. Wickramaarachchi, Xiang Zhou, T. Britton, Sergey Kuleshov, B. Liu, M. Khatchatryan, H. Hakobyan, A. I. Ostrovidov, D. I. Lersch, K. Suresh, H. Li, P. Eugenio, W. B. Li, J. Barlow, Stephen Taylor, W. Phelps, J. Ritman, J. R. Stevens, M. McCaughan, Haiyan Gao, Mark Richard James Williams, Michael Dugger, Q. Zhou, Barry Ritchie, G. M. Huber, D. I. Sober, C. Gleason, K. Livingston, A. Thiel, A. Hamdi, I. I. Strakovsky, A. Schick, E. Barriga, V. S. Goryachev, A. Deur, Carlos A. Salgado, P. Pauli, V. Neelamana, Z. Baldwin, Z. Papandreou, O. Soto, R. Dzhygadlo, S. Schadmand, I. Jaegle, V. Khachatryan, J. Zarling, R. Dotel, Krisztian Peters, K. Goetzen, M. J. Amaryan, A. Asaturyan, F. Nerling, R. A. Schumacher, X. Shen, Christine Kourkoumelis, R. E. Mitchell, R. A. Miskimen, B. Zihlmann, L. Ng, A. Ernst, Zhiyong Zhang, V. V. Berdnikov, G. Vasileiadis, W.U. Boeglin, V. Kakoyan, D. J. Mack, D. Lawrence, Sean A Dobbs, A. Somov, William Brooks, Lubomir Pentchev, C. Paudel, A. M. Foda, G. Kalicy, N. S. Jarvis, A. Dolgolenko, S. Cole, O. Cortes, C.P. Romero, T. C. Black, R. T. Jones, M. E. McCracken, J. Zhou, K. Mizutani, M. Kamel, A. Teymurazyan, Y. Yang, and E. Chudakov
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Physics ,Range (particle radiation) ,GlueX ,Proton ,Meson ,010308 nuclear & particles physics ,media_common.quotation_subject ,Momentum transfer ,01 natural sciences ,Asymmetry ,Pseudoscalar ,Nuclear physics ,Pion ,0103 physical sciences ,High Energy Physics::Experiment ,Nuclear Experiment ,010306 general physics ,media_common - Abstract
We report a measurement of the π − photoproduction beam asymmetry for the reaction → γ p → π − Δ + + using data from the GlueX experiment in the photon beam energy range 8.2–8.8 GeV. The asymmetry Σ is measured as a function of four-momentum transfer t to the Δ + + and compared to phenomenological models. We find that Σ varies as a function of t : negative at smaller values and positive at higher values of | t | . The reaction can be described theoretically by t -channel particle exchange requiring pseudoscalar, vector, and tensor intermediaries. In particular, this reaction requires charge exchange, allowing us to probe pion exchange and the significance of higher-order corrections to one-pion exchange at low momentum transfer. Constraining production mechanisms of conventional mesons may aid in the search for and study of unconventional mesons. This is the first measurement of the process at this energy.
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- 2021
19. Beam Spin Asymmetry in Semi-Inclusive Electroproduction of Hadron Pairs
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K. Park, V. P. Kubarovsky, Krishna Neupane, C. W. Kim, H. Avakian, H. Voskanyan, W. J. Briscoe, Dustin Keller, P. Eugenio, Michael Wood, K. Hafidi, G. Gavalian, L. Marsicano, A Hobart, V. Mokeev, F. X. Girod, R. A. Schumacher, M. Battaglieri, I. I. Strakovsky, R. W. Gothe, T. Chetry, M. J. Amaryan, F. Sabatié, K. Wei, S. Fegan, N. Markov, L. Guo, Alessandro Rizzo, K. A. Griffioen, Fatiha Benmokhtar, Gerard Gilfoyle, R. Paremuzyan, E. L. Isupov, A. Deur, S. Pisano, V. Crede, Ross Milner, O. Soto, P. Lenisa, M. Contalbrigo, C. Dilks, L. Lanza, M. Ungaro, T. A. Forest, C. Mullen, W. K. Brooks, M. Guidal, Z. W. Zhao, S. Stepanyan, N. A. Baltzell, M. Holtrop, T. B. Hayward, Friedrich Klein, Andrea Celentano, O. Pogorelko, J. Poudel, A. Filippi, Brian Raue, K. Hicks, K. Joo, D. Marchand, M. Osipenko, Luciano Pappalardo, K. L. Giovanetti, Hovanes Egiyan, M. Ripani, C. Munoz Camacho, A. D'Angelo, B. Yale, S. Adhikari, L. Venturelli, B. McKinnon, M. Ehrhart, D. G. Ireland, Tim O'Connell, I. Bedlinskiy, D. I. Glazier, W. Phelps, D. G. Jenkins, N. Tyler, M. Leali, L. El Fassi, C. Djalali, Volker D. Burkert, W. Kim, T. Mineeva, D. Heddle, R. De Vita, G. Ciullo, V. Mascagna, H. S. Jo, A. S. Biselli, M. Mirazita, D. Bulumulla, Y. Prok, D. S. Carman, G. Niculescu, B. S. Ishkhanov, E. Pasyuk, Aditya R. Khanal, X. Wei, R. G. Fersch, Andrea Bianconi, H. Atac, P. L. Cole, N. Dashyan, G. Angelini, P. Chatagnon, B. A. Clary, P. Rossi, M. Defurne, Michael Paolone, L. Barion, Axel Schmidt, Aurore Courtoy, K. Livingston, M. Khandaker, Jie Zhang, I. J. D. MacGregor, E. Golovatch, R. Dupre, Y. Ghandilyan, Q. Huang, E. Voutier, A. Vossen, A. El Alaoui, Y. Ilieva, Nicholas Zachariou, J. C. Carvajal, S. Strauch, D. P. Watts, F. Bossu, Nikolaos Sparveris, Dinko Pocanic, S. E. Kuhn, M. Hattawy, Y. G. Sharabian, S. Boiarinov, H. Hakobyan, J. Ritman, S. Diehl, C. Salgado, U. Shrestha, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and CLAS
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High Energy Physics::Lattice ,Nuclear Theory ,Hadron ,parton: distribution function ,General Physics and Astronomy ,Parton ,01 natural sciences ,High Energy Physics - Experiment ,High Energy Physics - Experiment (hep-ex) ,Economica ,higher-twist ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,Nuclear Experiment (nucl-ex) ,electron: beam ,Nuclear Experiment ,dimension: 1 ,Physics ,Quantum chromodynamics ,deep inelastic scattering: semi-inclusive reaction ,Settore FIS/04 ,nucleon ,kinematics ,Quarks and Gluons ,helicity distributions ,quark: valence ,Nucleon ,Jefferson Lab ,Quark ,Particle physics ,polarization: longitudinal ,FOS: Physical sciences ,Socio-culturale ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,Transversity Distributions ,hadron: electroproduction ,hadron: pair production ,Pion ,CLAS ,Hadron Physics ,quantum chromodynamics ,0103 physical sciences ,ddc:530 ,010306 general physics ,High Energy Physics::Phenomenology ,Ambientale ,Deep inelastic scattering ,spin: asymmetry: measured ,Distribution function ,Elementary Particles and Fields ,QCD Dynamics ,High Energy Physics::Experiment ,pi: pair production ,experimental results - Abstract
Physical review letters 126(6), 062002 (2021). doi:10.1103/PhysRevLett.126.062002, Published by APS, College Park, Md.
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- 2021
20. Insoluble Vascular Amyloid Deposits Trigger Disruption of the Neurovascular Unit in Alzheimer's Disease Brains
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Mario Hernandes-Alejandro, Miguel Ángel Ontiveros-Torres, Mar Pacheco-Herrero, Marely Bravo-Muñoz, Fidel de la Cruz-Lopez, Andrés Salas-Casas, Luis O Soto-Rojas, B. Berenice Campa-Córdoba, Ignacio Villanueva-Fierro, Linda Garcés-Ramírez, José Luna-Muñoz, Charles R. Harrington, and Goar Gevorkian
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Pathology ,medicine.medical_specialty ,caspase-5 ,Amyloid ,blood–brain barrier ,Blood–brain barrier ,Immunofluorescence ,Article ,Catalysis ,Tight Junctions ,lcsh:Chemistry ,Inorganic Chemistry ,Alzheimer Disease ,Parenchyma ,medicine ,Dementia ,Humans ,neurovascular unit ,Physical and Theoretical Chemistry ,Receptor ,lcsh:QH301-705.5 ,Molecular Biology ,Spectroscopy ,Aged ,Aged, 80 and over ,Amyloid beta-Peptides ,fibrillar amyloid ,medicine.diagnostic_test ,Chemistry ,Organic Chemistry ,Neurodegeneration ,Brain ,General Medicine ,medicine.disease ,Phenotype ,Actins ,Computer Science Applications ,pyroglutamate-modified amyloid-beta peptides ,medicine.anatomical_structure ,lcsh:Biology (General) ,lcsh:QD1-999 ,Astrocytes ,Case-Control Studies ,Caspases ,Blood Vessels ,Microglia ,Alzheimer’s disease - Abstract
Alzheimer’s disease (AD) is a neurodegenerative disease, characterized histopathologically by intra-neuronal tau-related lesions and by the accumulation of amyloid β-peptide (Aβ) in the brain parenchyma and around cerebral blood vessels. According to the vascular hypothesis of AD, an alteration in the neurovascular unit (NVU) could lead to Aβ vascular accumulation and promote neuronal dysfunction, accelerating neurodegeneration and dementia. To date, the effects of insoluble vascular Aβ deposits on the NVU and the blood–brain barrier (BBB) are unknown. In this study, we analyze different Aβ species and their association with the cells that make up the NVU. We evaluated post-mortem AD brain tissue. Multiple immunofluorescence assays were performed against different species of Aβ and the main elements that constitute the NVU. Our results showed that there are insoluble vascular deposits of both full-length and truncated Aβ species. Besides, insoluble aggregates are associated with a decrease in the phenotype of the cellular components that constitute the NVU and with BBB disruption. This approach could help identify new therapeutic targets against key molecules and receptors in the NVU that can prevent the accumulation of vascular fibrillar Aβ in AD.
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- 2021
21. Photoproduction of η mesons off the proton for 1.2<Eγ<4.7GeV using CLAS at Jefferson Laboratory
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I. Illari, R. A. Schumacher, U. Shrestha, M. Leali, S. Adhikari, B. McKinnon, C. A. Meyer, E. Munevar, P. Chatagnon, B. S. Ishkhanov, Aditya R. Khanal, G. V. Fedotov, P. Lenisa, J. Ritman, S. Stepanyan, N. Dashyan, D. P. Watts, Andrea Bianconi, M. Ungaro, K. P. Adhikari, A. El Alaoui, I. I. Strakovsky, G. Rosner, T. Chetry, A. Deur, C. W. Kim, Laura Clark, W. Phelps, M. Battaglieri, Nicholas Zachariou, J. C. Carvajal, Alexander Schmidt, M. J. Amaryan, William Brooks, Yordanka Ilieva, T. B. Hayward, V. Mascagna, B. A. Clary, E. L. Isupov, Y. G. Sharabian, H. Voskanyan, Friedrich Klein, W. J. Briscoe, P. Eugenio, S. Boiarinov, Brian Raue, G. Angelini, L. Barion, K. Joo, M. Guidal, Michael Paolone, Z. W. Zhao, F. X. Girod, F. Bossu, R. Cruz-Torres, E. Golovatch, M. Holtrop, R. Dupre, S. Strauch, Hovanes Egiyan, Maxime Defurne, K. A. Griffioen, Dustin Keller, C. Munoz Camacho, H. Hakobyan, Y. Prok, H. S. Jo, M. Hattawy, Michael Wood, K. Hafidi, D. G. Ireland, Luciano Pappalardo, V. Crede, A. Kim, D. I. Glazier, G. Ciullo, D. S. Carman, F. Sabatié, T. Hu, R. Paremuzyan, R. De Vita, D. Marchand, D. Protopopescu, Eugene Pasyuk, X. Wei, L. Venturelli, S. Diehl, Fatiha Benmokhtar, O. Soto, C. Salgado, E. Voutier, L. Lanza, Nicholas M. Harrison, Gerard Gilfoyle, A. Filippi, A. Movsisyan, J. W. Price, D. Sokhan, V. P. Kubarovsky, I. Bedlinskiy, M. Khandaker, M. Khachatryan, Nikolaos Sparveris, Z. E. Meziani, K. Wei, S. Niccolai, K. Livingston, N. Markov, Iu. Skorodumina, N. Tyler, C. Djalali, J. A. Tan, V. I. Mokeev, D. Heddle, Jie Zhang, G. Gavalian, D. G. Jenkins, R. Fersch, M. Ehrhart, M. Ripani, O. Pogorelko, P. L. Cole, J. Rowley, Tim O'Connell, A. I. Ostrovidov, Michael Dugger, T. Mineeva, P. Nadel-Turonski, H. Atac, A. S. Biselli, A. D'Angelo, L. Guo, Sylvester Joosten, Alessandro Rizzo, G. Asryan, L. El Fassi, C. Ayerbe Gayoso, M. E. McCracken, A. Hobart, C. Hanretty, W. Kim, G. Niculescu, P. Stoler, M. Osipenko, I. J. D. MacGregor, K. Hicks, M. Contalbrigo, J. Poudel, Z. Akbar, A. Celentano, and R. W. Gothe
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Physics ,Particle physics ,Range (particle radiation) ,Photon ,Proton ,Meson ,010308 nuclear & particles physics ,Sigma ,Photon energy ,01 natural sciences ,7. Clean energy ,Resonance (particle physics) ,0103 physical sciences ,High Energy Physics::Experiment ,Nuclear Experiment ,010306 general physics ,Nucleon - Abstract
Photoproduction cross sections are reported for the reaction $\gamma p\to p\eta$ using energy-tagged photons and the CLAS spectrometer at Jefferson Laboratory. The $\eta$ mesons are detected in their dominant charged decay mode, $\eta\to \pi^+\pi^-\pi^0$, and results on differential cross sections are presented for incident photon energies between 1.2 and 4.7 GeV. These new $\eta$ photoproduction data are consistent with earlier CLAS results but extend the energy range beyond the nucleon resonance region into the Regge regime. The normalized angular distributions are compared with the experimental results from several other experiments, and with predictions of $\eta$ MAID\,2018 and the latest solution of the Bonn-Gatchina coupled-channel analysis. Differential cross sections $d\sigma/dt$ are presented for incident photon energies $E_\gamma > 2.9$ GeV ($W > 2.5$ GeV), and compared with predictions which are based on Regge trajectories exchange in the $t$-channel (Regge models). The data confirm the expected dominance of $\rho$, $\omega$ vector-meson exchange in an analysis by the Joint Physics Analysis Center.
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- 2020
22. First measurement of direct photoproduction of the a2(1320)0 meson on the proton
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J. Rowley, A. I. Ostrovidov, Volker D. Burkert, A. S. Biselli, W. Phelps, K. A. Griffioen, V. Mascagna, N. Markov, M. E. McCracken, A. Hobart, Carlos A. Salgado, A. Filippi, A. Pilloni, Frank Klein, Dustin Keller, P. Eugenio, L. Marsicano, Sylvester Joosten, Maxime Defurne, M. Khandaker, M. Khachatryan, M. Osipenko, Pawel Nadel-Turonski, Michael Paolone, Alexander Schmidt, D. I. Glazier, D. Bulumulla, E. Munevar, B. S. Ishkhanov, Aditya R. Khanal, Nikolaos Sparveris, M. Ungaro, K. Hafidi, F. Bossu, M. Guidal, G. Niculescu, L. Lanza, D. G. Jenkins, I. J. D. MacGregor, R. De Vita, M. Leali, Laura Clark, M. J. Amaryan, Andrea Bianconi, C. W. Kim, W. Kim, W. Gohn, F. X. Girod, N. Tyler, C. Djalali, J. A. Tan, P. Chatagnon, G. V. Fedotov, H. Voskanyan, A. D'Angelo, T. Chetry, I. Bedlinskiy, L. Elouadrhiri, M. Holtrop, F. Hauenstein, W. J. Briscoe, E. Pasyuk, S. Strauch, K. Joo, H. Atac, D. P. Watts, H. Egiyan, G. Angelini, L. El Fassi, I. I. Strakovsky, R. Dupre, M. Battaglieri, F. Sabatié, Luciano Pappalardo, D. Heddle, A. Deur, M. Ripani, G. Gavalian, V. Mokeev, D. Marchand, V. Lucherini, V. P. Kubarovsky, Michael Dugger, Fatiha Benmokhtar, Krishna Neupane, R. G. Fersch, O. Pogorelko, O. Soto, S. Niccolai, Vincent Mathieu, P. L. Cole, Z. W. Zhao, Alessandro Rizzo, E. Golovatch, P. Lenisa, K. Hicks, M. Ehrhart, S. Adhikari, T. B. Hayward, J. Zhang, M. Hattawy, J. W. Price, N. Dashyan, Yordanka Ilieva, L. Barion, G. Rosner, William Brooks, G. Ciullo, Y. Prok, L. Venturelli, D. S. Carman, R. A. Schumacher, A. El Alaoui, X. Wei, Nicholas Zachariou, J. C. Carvajal, S. Stepanyan, E. Voutier, A. Movsisyan, Adam P. Szczepaniak, D. Sokan, Z. E. Meziani, K. Livingston, K. P. Adhikari, H. Hakobyan, H. S. Jo, A. Kim, J. Ritman, S. Diehl, D. G. Ireland, V. Crede, O. Cortes, E. L. Isupov, R. Paremuzyan, S. Boiarinov, R. Cruz-Torres, Nicholas M. Harrison, U. Shrestha, M. Contalbrigo, C. Munoz Camacho, M. H. Wood, B. McKinnon, A. Celentano, R. W. Gothe, M. Mirazita, and N. Gevorgyan
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Physics ,Meson ,010308 nuclear & particles physics ,Partial wave analysis ,Hadron ,Sigma ,Photon energy ,01 natural sciences ,Nuclear physics ,Amplitude ,0103 physical sciences ,Invariant mass ,Nuclear Experiment ,010306 general physics ,Phenomenology (particle physics) - Abstract
We present the first measurement of the exclusive reaction $\gamma p \rightarrow a_2(1320)^0 \, p$ in the photon energy range $3.5$-$5.5$ GeV and four-momentum transfer squared $0.2
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- 2020
23. Measurement of the photon beam asymmetry in γ⃗p→K+Σ0 at Eγ=8.5 GeV
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T. D. Beattie, K. Goetzen, W. J. Briscoe, P. Pauli, G. M. Huber, D. I. Sober, M. J. Amaryan, V. Crede, M. M. Dalton, V. S. Goryachev, Christine Kourkoumelis, A. Hurley, R. E. Mitchell, G. Kalicy, N. S. Jarvis, C. A. Meyer, L. Ng, D. Lawrence, A. Ernst, H. Hakobyan, V. Lyubovitskij, G. J. Lolos, I. Larin, C. Salgado, R. Barsotti, S. Adhikari, O. Cortes, Sean A Dobbs, T. Britton, A. Somov, A. Ali, Sergey Kuleshov, C.P. Romero, P. Eugenio, R. A. Schumacher, D. I. Lersch, K. Livingston, M. M. Ito, Barry Ritchie, N. Cao, Ashot Gasparian, A. Hamdi, Krisztian Peters, Michael Dugger, T. C. Black, I. I. Strakovsky, J. Barlow, Joerg Reinhold, S. Fegan, A. Deur, S. Cole, J. Frye, E. Pooser, V. A. Matveev, N. Qin, J. Schwiening, O. Soto, A. M. Schertz, T. Whitlatch, L. Robison, T. Daniels, B. E. Cannon, T. Erbora, H. Ni, Z. Papandreou, Ting Xiao, V. V. Berdnikov, William Brooks, J. R. Stevens, M. McCaughan, Mark Richard James Williams, Lubomir Pentchev, C. Gleason, S. Furletov, Q. Zhou, A. M. Foda, Dmitri Romanov, H. Marukyan, R.S. Pedroni, W. U. Boeglin, W. McGinley, E. Chudakov, N. Wickramaarachchi, A. Thiel, K. K. Seth, C. Fanelli, M. Kamel, W. Phelps, F. Nerling, Elton Smith, B. Liu, G. Vasileiadis, A. Austregesilo, Zhiyong Zhang, M. R. Shepherd, A. Teymurazyan, R. T. Jones, Y. Yang, M. E. McCracken, Xiang Zhou, S. Taylor, L. Gan, S. Somov, L. Guo, J. Zarling, C. Paudel, A. Dolgolenko, V. V. Tarasov, E. Barriga, M. Patsyuk, J. Foote, X. Shen, K. Suresh, Hovanes Egiyan, R. A. Miskimen, R. Dzhygadlo, F. Barbosa, V. Kakoyan, D. J. Mack, A. Goncalves, R. Dotel, B. Zihlmann, A. I. Ostrovidov, H. Li, D. G. Ireland, and W. B. Li
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Physics ,Range (particle radiation) ,GlueX ,Spectrometer ,010308 nuclear & particles physics ,Linear polarization ,media_common.quotation_subject ,Theoretical models ,01 natural sciences ,Asymmetry ,Nuclear physics ,0103 physical sciences ,High Energy Physics::Experiment ,Photon beam ,Nuclear Experiment ,010306 general physics ,Beam (structure) ,media_common - Abstract
We report measurements of the photon beam asymmetry Σ for the reaction γp→K+Σ0 (1193) using the GlueX spectrometer in Hall D at Jefferson Lab. Data were collected by using a linearly polarized photon beam in the energy range of 8.2–8.8 GeV incident on a liquid hydrogen target. The beam asymmetry Σ was measured as a function of the Mandelstam variable t , and a single value of Σ was extracted for events produced in the u channel. These are the first exclusive measurements of the photon beam asymmetry Σ for the reaction in this energy range. For the t channel, the measured beam asymmetry is close to unity over the t range studied, − t = ( 0.1 – 1.4 ) ( GeV / c ) 2 , with an average value of Σ = 1.00 ± 0.05 . This agrees with theoretical models that describe the reaction via the natural-parity exchange of the K ∗ (892) Regge trajectory. A value of Σ = 0.41 ± 0.09 is obtained for the u channel integrated up to − u = 2.0 ( GeV / c ) 2 .
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- 2020
24. [Installed Capacity Perception Survey for the Training of Residents Program in Orthopedics and Care Needs in Acute and Chronic Musculoskeletal Pathology in Mexico]
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G, Redondo-Aquino, J J, Gutiérrez-Gómez, F I, Gil-Orbezo, E, Gómez-Sánchez, R, Torres-González, I M, Encalada-Díaz, M A, Aguirre-Moreno, J C, Álvarez-Garnier, G A, Álvarez-Carrillo, J C, Bonilla-Tame, J, Burboa-Quiroz, L A, Chávez-Amezcua, E, Cuellar-Ríos, J C, De La Fuente-Zuno, J, Camarena-Martínez, B, Díaz-De Jesús, F A, Cisneros-Dreinhofer, G, Espejo-Sánchez, M A, Fuentes-Nucamendi, A, García-Balderas, G J, García Félix-Díaz, A, García-Hernández, G, García-Pinto, F, Gómez-García, C J, González-Castillo, R G, González-Quintanilla, T M, Guerrero-Rubio, G, Guzmán-Hernández, M, Hernández-Olivé, S, Jiménez-Monteón, A, Joachín-Chávez, D, Lomelí-Zamora, D, López-Estrada, E H, Lora-Fierro, L T, Luna-Chaparro, J, Meza-Flores, F, Medina-Rodríguez, C A, Montoya-Verdugo, J L, Monarrez-Bañuelos, R, Monroy-Maya, G A, Moye-Elizalde, J A, Nava-Reyna, J A, Núñez-Valdés, J A, Orivio-Gallegos, J A, Osorno-Gómez, V M, Peña-Martínez, A J, Quiroz-Piña, J, Ramírez-Martínez, E M, Robles-Contreras, A, Rodríguez-Ramos, J L, Rosas-Cadena, F, Rovirosa-Vizoso, J I, Ruíz-Román, G A, Salas-Morales, V M, Sepúlveda-Oyervides, O, Sierra-Martínez, O, Soto-Ordóñez, H, Tito-Hernández, V, Toledo-Infanson, G, Valencia-Martínez, J C, Vélez-De Lachica, C A, Villalobos-Campuzano, J, Villegas-Saldaña, and M T, Zapata-Villalobos
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Orthopedics ,Surveys and Questionnaires ,Humans ,Internship and Residency ,Orthopedic Procedures ,Mexico - Abstract
It is essential that orthopaedic resident physicians be highly proficient in all aspects, considering the balance between supply, demand, need and context. Fundamental to identify the capacity and quality installed for their training in Mexico.Observational Study, transverse, non-probabilistic sampling-conglomerates, in two phases. The instrument has 8 domains, 57 variables and 4,867 items. 60 graduate professors of 20 states, 50 hospital sites, 22 university programs.1,038 years of experience (collective intelligence), 17 years of experience/teacher (01 to 50 years). Identified: acute pathology 30 (2 to 90%), chronic pathology 30 (5 to 96%), patients 15 years, 10 (3 to 30%), patients between 15 and 65 years, 47 (2 to 78%), patients 65 years, 20 (2 to 60%), number of beds/seat 20 (2 to 510), number of clinics 3 (1 to 48), number of surgical procedures/headquarters per year at the national level, was 960 (50 to 24,650). The national average per resident doctor is 362 surgeries/year with 1,450 surgical times/year.The needs and resources for the training of physicians specializing in orthopedics/traumatology are highly heterogeneous, so it should be adapted to the epidemiological needs of the region of influence, in an area of epidemiological transition. 62.2% expressed not having or have bad academic and scientific infrastructure at its headquarters, more than 50% without rotation overseas and 90% without regular scientific production.Es fundamental que los médicos residentes de ortopedia (traumatología) sean altamente competentes en todos los aspectos, considerando el equilibrio entre la oferta, demanda, necesidad y contexto. Es primordial identificar la capacidad y calidad instalada para su formación en México.Estudio observacional, transversal, muestreo no probabilístico-conglomerados, en dos fases. El instrumento tiene ocho dominios, 57 variables y 4,867 ítems. Sesenta profesores de postgrado de 20 estados, 50 sedes hospitalarias, 22 programas universitarios.1,038 años de experiencia (inteligencia colectiva), 17 años de experiencia/profesor (01 a 50 años). Se identificó: patología aguda 30 (2 a 90%), patología crónica 30 (5 a 96%), pacientes 15 años, 10 (3 a 30%), pacientes entre 15 y 65 años, 47 (2 a 78%), pacientes 65 años, 20 (2 a 60%), número de camas/sede 20 (2 a 510), número de consultorios 3 (1 a 48), el número de procedimientos quirúrgicos/sede al año a nivel nacional fue de 960 (50 a 24,650). La media nacional por médico residente es de 362 cirugías/año con 1,450 momentos quirúrgicos/año.Las necesidades y recursos para la formación de médicos especialistas en ortopedia/traumatología son en alto grado heterogéneos, por lo cual se debería adaptar a las necesidades epidemiológicas de la región de influencia, en un ámbito de transición epidemiológica. Sesenta y dos punto dos por ciento expresó no tener o tener deficiente infraestructura académica y científica en su sede, más de 50% sin rotación al extranjero y 90% sin producción científica regular.
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- 2020
25. Exclusive π0p electroproduction off protons in the resonance region at photon virtualities 0.4GeV2≤Q2≤1GeV2
- Author
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P. Eugenio, M. Taiuti, Carlos A. Salgado, L. C. Smith, I. I. Strakovsky, B. S. Ishkhanov, R. Dupre, M. Battaglieri, Aditya R. Khanal, A. Deur, R. A. Schumacher, M. Contalbrigo, Michael Paolone, F. Bossu, C. Evans, Maxime Defurne, N. Tyler, C. Djalali, J. A. Tan, K. A. Griffioen, Pawel Nadel-Turonski, Fatiha Benmokhtar, O. Soto, R. De Vita, M. Ungaro, S. Niccolai, L. Lanza, A. D'Angelo, A. Kim, Alessandro Rizzo, T. Mineeva, S. Stepanyan, W. Kim, U. Shrestha, V. Crede, L. El Fassi, T. B. Hayward, H. Atac, R. Paremuzyan, P. Stoler, K. Joo, D. G. Jenkins, M. Leali, K. Hicks, G. Ciullo, William Brooks, N. Markov, M. Guidal, G. Niculescu, Y. Prok, L. Venturelli, W. Phelps, E. De Sanctis, V. Mascagna, I. Bedlinskiy, E. Golovatch, D. S. Carman, A. Celentano, R. W. Gothe, E. L. Isupov, M. Holtrop, Nikos Sparveris, C. W. Kim, Luciano Pappalardo, X. Wei, F. X. Girod, S. Boiarinov, G. Angelini, H. Avakian, J. W. Price, P. L. Cole, G. Rosner, N. A. Baltzell, T. Chetry, J. Rowley, K. Park, D. Sokhan, Y. Ghandilyan, F. Sabatié, Y. G. Sharabian, H. Hakobyan, H. S. Jo, E. Voutier, S. Diehl, D. G. Ireland, I. J. D. MacGregor, N. Dashyan, Volker D. Burkert, A. S. Biselli, S. Strauch, S. Adhikari, M. H. Wood, M. Osipenko, P. Chatagnon, B. McKinnon, Yordanka Ilieva, V. Mokeev, M. Mirazita, Rong Wang, M. Ehrhart, L. Barion, M. Hattawy, H. Voskanyan, S. K. Nanda, M. Ripani, M. Khachatryan, W. J. Briscoe, D. Marchand, E. Pasyuk, V. P. Kubarovsky, D. Riser, A. El Alaoui, C. Ayerbe Gayoso, Nicholas Zachariou, J. C. Carvajal, O. Pogorelko, D. Protopopescu, Frank Klein, Dustin Keller, K. Livingston, K. Hafidi, M. J. Amaryan, A. Filippi, and M. Khandaker
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Physics ,Range (particle radiation) ,Photon ,Proton ,010308 nuclear & particles physics ,Resonance ,01 natural sciences ,Nuclear physics ,Cross section (physics) ,Isospin ,0103 physical sciences ,Invariant mass ,010306 general physics ,Legendre polynomials - Abstract
The exclusive electroproduction process ep→e′p′π0 was measured in the range of photon virtualities Q2=0.4–1.0GeV2 and the invariant mass range of the pπ0 system of W=1.1–1.8 GeV. These kinematics are covered in exclusive π0 electroproduction off the proton with nearly complete angular coverage in the pπ0 center-of-mass system and with high statistical accuracy. Nearly 36 000 cross-section points were measured, and the structure functions σT+eσL,σLT, and σTT, were extracted via fitting the ϕπ0 dependence of the cross section. A Legendre polynomial expansion analysis demonstrates the sensitivity of our data to high-lying N* and Δ* resonances with M>1.6 GeV. As part of a broad effort to determine the electrocouplings of the N* and Δ* resonances using both single- and double-pion electroproduction, this dataset is crucial for the reliable extraction of the high-lying resonance electrocouplings from the combined isospin analysis of the Nπ and π+π−p channels.
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- 2020
26. Beam asymmetry Σ for the photoproduction of η and η′ mesons at Eγ=8.8GeV
- Author
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A. Hurley, L. Gan, C. A. Meyer, J. Frye, C. Paudel, V. V. Tarasov, A. Dolgolenko, H. Hakobyan, C. Salgado, A. M. Schertz, E. Barriga, T. Daniels, C. Fanelli, R. T. Jones, W. Phelps, F. Nerling, M. E. McCracken, Krisztian Peters, Michael Dugger, V. Kakoyan, M. J. Staib, B. E. Cannon, T. Erbora, E. Pooser, I. A. Semenova, Z. Zhang, V. A. Matveev, A. Barnes, Dmitri Romanov, Sean A Dobbs, V. V. Berdnikov, A. Hamdi, J. Barlow, I. I. Strakovsky, Mark Richard James Williams, K. Suresh, T. Whitlatch, A. Somov, T. C. Black, D. Lawrence, A. Thiel, M. M. Dalton, H. Marukyan, Hovanes Egiyan, L. Ng, A. Ernst, M. McCaughan, R.S. Pedroni, W. McGinley, G. M. Huber, D. I. Sober, L. Robison, K. Livingston, V. Lyubovitskij, A. Deur, Ting Xiao, Q. Zhou, R. A. Miskimen, William Brooks, X. Zhou, P. Eugenio, G. Zhao, N. Wickramaarachchi, O. Cortes, N. Qin, L. Guo, E. Chudakov, R. Barsotti, Lubomir Pentchev, N. Cao, O. Soto, K. K. Seth, R. Dzhygadlo, F. Barbosa, B. Zihlmann, S. Fegan, M. Kamel, A. M. Foda, D. J. Mack, R. A. Schumacher, N. Gevorgyan, T. Britton, A. I. Ostrovidov, B. Liu, V. Crede, C.P. Romero, G. J. Lolos, I. Larin, G. Vasileiadis, H. Li, Ashot Gasparian, Sergey Kuleshov, D. I. Lersch, D. G. Ireland, A. Goncalves, Z. Papandreou, V. S. Goryachev, M. J. Amaryan, P. Mattione, S. Adhikari, M. Patsyuk, W. B. Li, A. Yu. Semenov, R. Dotel, Elton Smith, J. Schwiening, Barry Ritchie, J. R. Stevens, S. Somov, M. Boer, J. Foote, J. Zarling, M. R. Shepherd, A. Teymurazyan, C. Gleason, G. Kalicy, N. S. Jarvis, X. Shen, A. Austregesilo, S. Cole, Christine Kourkoumelis, Joerg Reinhold, A. Ali, R. E. Mitchell, W. U. Boeglin, Y. Yang, M. M. Ito, P. Pauli, S. Furletov, W. J. Briscoe, T. D. Beattie, and K. Goetzen
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Physics ,GlueX ,Meson ,010308 nuclear & particles physics ,Linear polarization ,media_common.quotation_subject ,Momentum transfer ,Parity (physics) ,01 natural sciences ,7. Clean energy ,Asymmetry ,0103 physical sciences ,Quasiparticle ,Atomic physics ,Photon beam ,010306 general physics ,media_common - Abstract
We report on the measurement of the beam asymmetry Σ for the reactions → γ p → p η and → γ p → p η ′ from the GlueX experiment using an 8.2–8.8-GeV linearly polarized tagged photon beam incident on a liquid hydrogen target in Hall D at Jefferson Laboratory. These measurements are made as a function of momentum transfer − t with significantly higher statistical precision than our earlier η measurements and are the first measurements of η ′ in this energy range. We compare the results to theoretical predictions based on t -channel quasiparticle exchange. We also compare the ratio of Σ η to Σ η ′ to these models as this ratio is predicted to be sensitive to the amount of s ¯ s exchange in the production. We find that photoproduction of both η and η ′ is dominated by natural parity exchange with little dependence on − t .
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- 2019
27. Alcoholic Fermentation
- Author
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Nicolás O. Soto-Cruz, Adanely Paredes-Ortíz, and Jesús B. Páez-Lerma
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- 2019
28. 12C(e,e'pN) measurements of short range correlations in the tensor-to-scalar interaction transition region
- Author
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M. J. Amaryan, P. Lenisa, Jie Zhang, A. Beck, L. Marsicano, T. B. Hayward, U. Shrestha, Larry Weinstein, S. Strauch, Maxime Defurne, K. A. Griffioen, D. P. Watts, Friedrich Klein, R. Paremuzyan, Brian Raue, O. Pogorelko, J. Rowley, A. I. Ostrovidov, R. A. Schumacher, F. X. Girod, M. Duer, A. Denniston, E. Golovatch, R. Dupre, Nicholas M. Harrison, R. De Vita, I. I. Strakovsky, P. Eugenio, A. Deur, W. K. Brooks, A. Filippi, D. Sokhan, B. A. Clary, D. Protopopescu, Volker D. Burkert, A. S. Biselli, L. Lanza, M. Khandaker, N. Tyler, C. Djalali, E. Voutier, Michael Paolone, Y. G. Sharabian, X. Zheng, H. Atac, J. A. Tan, Y. Prok, D. S. Carman, I. Bedlinskiy, W. Phelps, V. Lucherini, M. Battaglieri, A. El Alaoui, Y. Ilieva, E. L. Isupov, Nicholas Zachariou, X. Wei, S. Mey-Tal Beck, S. Boiarinov, Hovanes Egiyan, F. Hauenstein, C. Munoz Camacho, J. W. Price, Taofeng Wang, Fatiha Benmokhtar, M. Khachatryan, Nikolaos Sparveris, N. Markov, A. Movsisyan, R. Cruz-Torres, T. A. Forest, O. Soto, D. Heddle, M. Ungaro, K. P. Adhikari, Douglas Higinbotham, Latifa Elouadrhiri, D. Marchand, P. Nadel-Turonski, S. Adhikari, B. McKinnon, M. Ripani, A. Kim, S. Stepanyan, I. Korover, M. Hattawy, M. Guidal, B. Mustapha, Z. W. Zhao, T. Mineeva, Or Hen, H. Hakobyan, M. Mirazita, J. Ritman, L. Barion, J.R. Pybus, M. Holtrop, S. Diehl, R. G. Fersch, C. Salgado, K. Joo, Luciano Pappalardo, T. Chetry, E.P. Segarra, H. S. Jo, D. G. Jenkins, M. Leali, Eugene Pasyuk, P. L. Cole, M. Ehrhart, G. Rosner, P. Chatagnon, A. D'Angelo, L. El Fassi, V. P. Kubarovsky, L. Venturelli, Krishna Neupane, C. W. Kim, H. Voskanyan, W. J. Briscoe, Dustin Keller, E. Piasetzky, D. Bulumulla, Michael Wood, K. Hafidi, Aditya R. Khanal, Andrea Bianconi, G. Niculescu, Alexander Schmidt, G. Gavalian, M. Osipenko, I. J. D. MacGregor, F. Sabatié, D. G. Ireland, V. Crede, M. Contalbrigo, Laura Clark, G. Angelini, K. Hicks, A. Celentano, R. W. Gothe, Alessandro Rizzo, V. Mascagna, S. Joosten, K. Livingston, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and The Clas Collaboration
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Nuclear and High Energy Physics ,Nuclear Theory ,dependence ,CLAS ,dynamics ,isospin ,energy ,system ,Astronomy & Astrophysics ,Physics ,QC1-999 ,Scalar (mathematics) ,FOS: Physical sciences ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,Astrophysics ,01 natural sciences ,Nuclear Theory (nucl-th) ,Momentum ,High Energy Physics - Phenomenology (hep-ph) ,0103 physical sciences ,ddc:530 ,Tensor ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment ,010306 general physics ,Nuclear theory ,[PHYS]Physics [physics] ,Range (particle radiation) ,010308 nuclear & particles physics ,Settore FIS/04 ,Nuclear interaction ,High Energy Physics - Phenomenology ,Astronomy & ,Atomic physics ,Nucleon - Abstract
High-momentum configurations of nucleon pairs at short-distance are probed using measurements of the $^{12}$C$(e,e'p)$ and $^{12}$C$(e,e'pN)$ reactions (where $N$ is either $n$ or $p$), at high-$Q^2$ and $x_B>1.1$. The data span a missing-momentum range of 300--1000 MeV/c and are predominantly sensitive to the transition region of the strong nuclear interaction from a Tensor to Scalar interaction. The data are well reproduced by theoretical calculations using the Generalized Contact Formalism with both chiral and phenomenological nucleon-nucleon ($NN$) interaction models. This agreement suggests that the measured high missing-momentum protons up to $1000$ MeV/c predominantly belong to short-ranged correlated (SRC) pairs. The measured $^{12}$C$(e,e'pN)$ / $^{12}$C$(e,e'p)$ and $^{12}$C$(e,e'pp)$ / $^{12}$C$(e,e'pn)$ cross-section ratios are consistent with a decrease in the fraction of proton-neutron SRC pairs and increase in the fraction of proton-proton SRC pairs with increasing missing momentum. This confirms the transition from an isospin-dependent tensor $NN$ interaction at $\sim 400$ MeV/c to an isospin-independent scalar interaction at high-momentum around $\sim 800$ MeV/c as predicted by theoretical calculation., Accepted for publication in Physics Letters B. 7 pages, 3 figures, and online supplementary materials
- Published
- 2021
29. Dynamic Planning for Flexible Port Infrastructure after Panama Canal Expansion: A Real Case Study
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Reyes, O. Soto, Taneja, P., Pielage, B. A., Van Schuylenburg, M., Jain, Pooja, and Stahlman, William S.
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Panama canal ,Flexibility (engineering) ,Operations research ,Computer science ,Monte Carlo method ,adaptive ,Monte Carlo Simulation ,Dynamic planning ,Port (computer networking) ,Real Options ,flexibility ,opportunities ,Terminal (electronics) ,Order (exchange) ,Dynamic Forecasting ,uncertainty ,Engineering design process - Abstract
This paper presents a study carried out to first assess the impact of the Panama Canal expansion (PCE) on selected Caribbean ports, and thereafter, to examine how the ports can adapt in order to seize new opportunities created by the expansion. An applied case of long-term dynamic planning and flexibility in engineering design is presented for a new port terminal in Barranquilla, Colombia. Furthermore, this paper presents the results of a stochastic method for quantifying opportunities from containerized traffic using dynamic forecasting, real options analysis, and Monte Carlo simulation, within the framework and spirit of adaptive port planning under uncertainty.
- Published
- 2019
30. A single intranigral administration of β-sitosterol β-d-glucoside elicits bilateral sensorimotor and non-motor alterations in the rat
- Author
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Francisco E. Lopez-Salas, Fidel de la Cruz-Lopez, Yazmin M. Flores-Martinez, Cecilia Bañuelos, Maria E. Gutierrez-Castillo, Claudia Luna-Herrera, Daniel Martinez-Fong, Jose Ayala-Davila, Guadalupe Soto-Rodriguez, America Padilla-Viveros, Luis O. Soto-Rojas, Bismark Gatica-Garcia, Irma A Martínez-Dávila, and Linda Garcés-Ramírez
- Subjects
Male ,medicine.medical_specialty ,Parkinson's disease ,Anosmia ,Neurotoxins ,Neuropathology ,Open field ,03 medical and health sciences ,Behavioral Neuroscience ,chemistry.chemical_compound ,0302 clinical medicine ,Glucoside ,Oral administration ,Hyposmia ,Mesencephalon ,Internal medicine ,medicine ,Neurotoxin ,Animals ,Parkinson Disease, Secondary ,Rats, Wistar ,Gait Disorders, Neurologic ,030304 developmental biology ,0303 health sciences ,Depression ,Dopaminergic Neurons ,Parkinson Disease ,medicine.disease ,Sitosterols ,Rats ,Substantia Nigra ,Disease Models, Animal ,Endocrinology ,chemistry ,Sensorimotor Cortex ,medicine.symptom ,030217 neurology & neurosurgery ,Locomotion ,Behavioural despair test - Abstract
Parkinson's disease (PD) is a progressive neuropathology characterized by motor and non-motor alterations. β-sitosterol β-d-glucoside (BSSG) is a neurotoxin whose prolonged oral administration in rats has been proposed as a new PD model. Herein, we demonstrate that a single, unilateral, and intranigral administration of BSSG also elicits bilateral sensorimotor alterations in the rat. Six behavioral tests evaluated the effect of different concentrations of BSSG (3, 6, 9, and 12 μg/μL DMSO) from 15 to 120 days after administration. The first behavioral alterations, which appeared on day 15, were unbalanced and uncoordinated gaits and a decrease in the sensorimotor cortex activity, as evidenced by the beam-walking and the vibrissae tests, respectively. After 30 days, the corridor test revealed hyposmia and a decreased locomotor activity in the open field. The last alteration was a depressive-like behavior, as shown by the forced swim test on days 60 and 120. According to the cylinder test, no locomotor asymmetry was observed over time with any BSSG concentrations tested. Also, a mesencephalic TH(+) cell loss (p 0.05) was shown on day 30 when compared with the mock condition, and such a loss was even higher on day 120. At this time, the presence of pathological α-synuclein aggregates in the mesencephalon was documented. Our results show that the stereotaxic intranigral administration of BSSG reproduces some characteristics of oral administration, such as the progression of behavioral alterations, dopaminergic neurons loss, and the presence of Lewy body-like synuclein aggregations, in less time and resources.
- Published
- 2019
31. Elastografía cuantitativa en el nódulo mamario sospechoso para malignidad
- Author
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Lourdes N. Santos-Aragón, Dora L. Barragán-Patraca, Marco A. Téliz-Meneses, and Dafne O. Soto-Trujillo
- Subjects
General Earth and Planetary Sciences ,General Environmental Science - Published
- 2019
32. First Measurements of the Double-Polarization Observables F , P , and H in ω Photoproduction off Transversely Polarized Protons in the N* Resonance Region
- Author
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Eberhard Klempt, O. Cortes, C. Hanretty, K. A. Griffioen, M. Ungaro, V. A. Nikonov, X. Wei, B. S. Ishkhanov, O. Soto, C. D. Keith, S. Strauch, G. Khachatryan, F. X. Girod, M. Osipenko, A. D'Angelo, Eugene Pasyuk, H. S. Jo, A. El Alaoui, W. J. Briscoe, Y. Ilieva, Aditya R. Khanal, Dustin Keller, L. Barion, F. Sabatié, I. I. Strakovsky, L. Guo, Alessandro Rizzo, A. V. Anisovich, L. Lanza, J. Brock, V. Mokeev, E. L. Isupov, Nicholas Zachariou, K Nakayama, M. C. Kunkel, P. Nadel-Turonski, Rong Wang, R. De Vita, A. Deur, R. A. Schumacher, Michael Wood, P. Lenisa, W. Phelps, Barry Ritchie, S. Boiarinov, K. Hafidi, G. Ciullo, Y. Prok, Iu. Skorodumina, S Niccolai, P. Eugenio, W. Kim, G. Niculescu, D. S. Carman, W. K. Brooks, I. Bedlinskiy, C. A. Meyer, D. Payette, K. Livingston, Sylvester Joosten, G. Rosner, H. Egiyan, Andrea Celentano, T. B. Hayward, J. Pierce, Jie Zhang, S. Adhikari, Friedrich Klein, D. G. Jenkins, M. Taiuti, K. P. Adhikari, Brian Raue, D. P. Watts, D. Marchand, Y. G. Sharabian, A. Movsisyan, S. Diehl, M. Ripani, C. Salgado, C. Carlin, S. Fegan, M. L. Kabir, A. V. Sarantsev, M. Battaglieri, N. Tyler, B. Duran, V. P. Kubarovsky, E. Voutier, J. A. Tan, U. Shrestha, V. Crede, D. Riser, Chaden Djalali, O. Pogorelko, M. Khachatryan, Michael Dugger, T. Mineeva, H. Avakian, E. Golovatch, A Fradi, R. Dupre, H. Voskanyan, Nikolaos Sparveris, F. Cao, P. Roy, N C Wei, N. K. Walford, R. A. Montgomery, M. Guidal, E. De Sanctis, N. Dashyan, A. Kim, P. Chatagnon, I. J. D. MacGregor, Michael Paolone, M. Holtrop, M. Hattawy, R. W. Gothe, M Ehrhart, K. Hicks, Luciano Pappalardo, S. Park, Taya Chetry, M. Contalbrigo, G. Angelini, Sergey Kuleshov, D. G. Meekins, L. El Fassi, A. I. Ostrovidov, D. G. Ireland, Volker D. Burkert, A. S. Biselli, M. Khandaker, B. McKinnon, D. Heddle, P. L. Cole, M. L. Seely, B. Torayev, Feng Huang, R. Paremuzyan, Sandra K. Johnston, D. Protopopescu, Z. W. Zhao, Nicholas M. Harrison, Gerard Gilfoyle, D. Sokhan, A. Filippi, and C. Munoz Camacho
- Subjects
Physics ,Photon ,Spectrometer ,Proton ,Linear polarization ,media_common.quotation_subject ,Nuclear Theory ,General Physics and Astronomy ,Resonance ,Polarization (waves) ,01 natural sciences ,Asymmetry ,Nuclear physics ,0103 physical sciences ,Physics::Accelerator Physics ,Nuclear Experiment ,010306 general physics ,Nucleon ,media_common - Abstract
First measurements of double-polarization observables in ω photoproduction off the proton are presented using transverse target polarization and data from the CEBAF Large Acceptance Spectrometer (CLAS) FROST experiment at Jefferson Lab. The beam-target asymmetry F has been measured using circularly polarized, tagged photons in the energy range 1200-2700 MeV, and the beam-target asymmetries H and P have been measured using linearly polarized, tagged photons in the energy range 1200-2000 MeV. These measurements significantly increase the database on polarization observables. The results are included in two partial-wave analyses and reveal significant contributions from several nucleon (N^{*}) resonances. In particular, contributions from new N^{*} resonances listed in the Review of Particle Properties are observed, which aid in reaching the goal of mapping out the nucleon resonance spectrum.
- Published
- 2019
33. 123 Predictive Factors to Determine Treatment Course of Patients with First-time Priapism
- Author
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Evan Begun, Joshua Palka, W. Du Comb, and O. Soto Aviles
- Subjects
Psychiatry and Mental health ,Pediatrics ,medicine.medical_specialty ,Endocrinology ,Reproductive Medicine ,business.industry ,Urology ,Endocrinology, Diabetes and Metabolism ,Priapism ,medicine ,medicine.disease ,business ,Disease course - Published
- 2021
34. The Neurovascular Unit Dysfunction in Alzheimer’s Disease
- Author
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Ricardo Apátiga-Pérez, Fidel de la Cruz, Linda Garcés-Ramírez, Luis O Soto-Rojas, José Luna-Muñoz, Charles R. Harrington, Marcos M. Villegas-Rojas, Mar Pacheco-Herrero, Paola A. Martínez-Gómez, and B. Berenice Campa-Córdoba
- Subjects
Amyloid ,Pathology ,medicine.medical_specialty ,Tau protein ,microglia ,Inflammation ,Review ,Blood–brain barrier ,tau protein ,Catalysis ,lcsh:Chemistry ,Inorganic Chemistry ,Alzheimer Disease ,medicine ,Animals ,Humans ,Dementia ,Molecular Targeted Therapy ,Senile plaques ,Physical and Theoretical Chemistry ,lcsh:QH301-705.5 ,Molecular Biology ,Spectroscopy ,Microglia ,biology ,business.industry ,Organic Chemistry ,Neurodegeneration ,astrocytes ,Brain ,General Medicine ,medicine.disease ,Computer Science Applications ,medicine.anatomical_structure ,amyloid peptide ,lcsh:Biology (General) ,lcsh:QD1-999 ,Blood-Brain Barrier ,biology.protein ,Cerebral amyloid angiopathy ,medicine.symptom ,business ,Alzheimer’s disease - Abstract
Alzheimer’s disease (AD) is the most common neurodegenerative disease worldwide. Histopathologically, AD presents with two hallmarks: neurofibrillary tangles (NFTs), and aggregates of amyloid β peptide (Aβ) both in the brain parenchyma as neuritic plaques, and around blood vessels as cerebral amyloid angiopathy (CAA). According to the vascular hypothesis of AD, vascular risk factors can result in dysregulation of the neurovascular unit (NVU) and hypoxia. Hypoxia may reduce Aβ clearance from the brain and increase its production, leading to both parenchymal and vascular accumulation of Aβ. An increase in Aβ amplifies neuronal dysfunction, NFT formation, and accelerates neurodegeneration, resulting in dementia. In recent decades, therapeutic approaches have attempted to decrease the levels of abnormal Aβ or tau levels in the AD brain. However, several of these approaches have either been associated with an inappropriate immune response triggering inflammation, or have failed to improve cognition. Here, we review the pathogenesis and potential therapeutic targets associated with dysfunction of the NVU in AD.
- Published
- 2021
35. Mortar Based on Biomass Ashes from Araucanía Region
- Author
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C Manzur, O Soto, A González, and N Goméz
- Subjects
Cement ,Absorption of water ,Power station ,Fly ash ,Boiler (power generation) ,Environmental science ,Mortar ,Combustion ,Pulp and paper industry ,Water content - Abstract
The COMASA S.A. power plant is located near Temuco and burns a high amount of residual biomass produced in the Araucanía region. However, the main problem associated with this plant is the transportation and disposal of fly ash (9 tons per week), a residue generated during the combustion of Boiler I. Currently, fly ashes from Boiler I are transported more than 200 km south, increasing transportation and final disposal costs. In this study, the development of a mortar based on fly ash from the combustion of biomass from COMASA S.A. was analysed at a pre-feasibility level. The experimental procedure consisted of (i) the physicochemical characterization of biomass fly ash, (ii) obtaining different test specimens (mortars) via the addition of different proportions of fly ash (10-35%) to cement, and (iii) obtaining the best specimen by analysing the requirements of mortars for construction purposes (Chilean Standard NCh 1037). The test specimens were subjected to determination of apparent density, compression resistance, water absorption capacity and moisture content. The laboratory results showed that the mortar obtained with the addition of 20% of fly ash has similar physical characteristics to mortars used for building blocks, proving capable of resisting up to 20 MPa. To analyse the viability of the production of construction blocks based on best specimen, market, technical and economic-financial studies were carried out, considering the reuse of at least 60% of the fly ash generated per year. The study concluded that the project was viable, evidencing the potential use of this residue for the manufacture of low-cost blocks, while minimizing the cost associated with residue handling.
- Published
- 2020
36. Construction and Performance of the Barrel Electromagnetic Calorimeter for the GlueX Experiment
- Author
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A. Toro, G. J. Lolos, Z. Papandreou, E. G. Anassontzis, Sergey Kuleshov, M.J. Staib, H. Hakobyan, C. A. Meyer, E. S. Smith, E. Chudakov, M. Shepherd, E.L. Plummer, William Brooks, Stephen Taylor, I. Vega, C. L. Henschel, Yujie Qiang, A. Yu. Semenov, A. M. Foda, O. Soto, M. M. Dalton, S.T. Krueger, C.P. Romero, W. McGinley, N. Sandoval, Christine Kourkoumelis, I. A. Semenova, Rimsky Alejandro Rojas, D. Lawrence, J. R. Stevens, T. Whitlatch, F. Barbosa, G. Vasileiadis, G. Voulgaris, C. Stanislav, S. Katsaganis, B. Zihlmann, W. Levine, and T. D. Beattie
- Subjects
Physics ,Nuclear and High Energy Physics ,Range (particle radiation) ,Physics - Instrumentation and Detectors ,GlueX ,Spectrometer ,010308 nuclear & particles physics ,Physics::Instrumentation and Detectors ,Detector ,Monte Carlo method ,FOS: Physical sciences ,Instrumentation and Detectors (physics.ins-det) ,01 natural sciences ,7. Clean energy ,Calorimeter ,Nuclear physics ,Silicon photomultiplier ,0103 physical sciences ,Calibration ,High Energy Physics::Experiment ,Nuclear Experiment (nucl-ex) ,010306 general physics ,Nuclear Experiment ,Instrumentation - Abstract
The barrel calorimeter is part of the new spectrometer installed in Hall D at Jefferson Lab for the GlueX experiment. The calorimeter was installed in 2013, commissioned in 2014 and has been operating routinely since early 2015. The detector configuration, associated Monte Carlo simulations, calibration and operational performance are described herein. The calorimeter records the time and energy deposited by charged and neutral particles created by a multi-GeV photon beam. It is constructed as a lead and scintillating-fiber calorimeter and read out with 3840 large-area silicon photomultiplier arrays. Particles impinge on the detector over a wide range of angles, from normal incidence at 90 degrees down to 11.5 degrees, which defines a geometry that is fairly unique among calorimeters. The response of the calorimeter has been measured during a running experiment and performs as expected for electromagnetic showers below 2.5 GeV. We characterize the performance of the BCAL using the energy resolution integrated over typical angular distributions for $\pi^0$ and $\eta$ production of $\sigma_E/E$=5.2\%/$\sqrt{E(\rm{GeV})} \oplus$ 3.6\% and a timing resolution of $\sigma$\,=\,150\,ps at 1\,GeV., Comment: 46 pages, 33 figures
- Published
- 2018
- Full Text
- View/download PDF
37. Perfil de seguridad del método POSE
- Author
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D Rafael De La Cruz, O Soto, C Piedracoba, E Ulloa Márquez, AJ Del Pozo García, Jorge L. Rosado, and F Sánchez Gómez
- Published
- 2017
38. Measurement of the beam asymmetry Σ for π0 and η photoproduction on the proton at Eγ=9 GeV
- Author
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E. Chudakov, J. Nys, V. Kakoyan, D. Lawrence, V. Lyubovitskij, F. Nerling, V. E. Tarasov, P. Eugenio, Z. Zhang, R. Dzhygadlo, H. Al Ghoul, F. Barbosa, N. K. Walford, V. Crede, Sean A Dobbs, J. Hardin, Dmitri Romanov, J. Schwiening, A. Barnes, S. Somov, A. Somov, B. Zihlmann, I. Vega, M. Lara, Kamal K. Seth, G. Nigmatkulov, Mark Richard James Williams, M. M. Dalton, Sergey Kuleshov, D. W. Bennett, C. Salgado, A. Yu. Semenov, L. Gan, L. Robison, V. A. Matveev, D. J. Mack, Ting Xiao, William Brooks, T. D. Beattie, N. Gevorgyan, M. R. Shepherd, A. Teymurazyan, Lubomir Pentchev, C. Kourkoumeli, A. M. Foda, S. Furletov, A. Subedi, Z. Papandreou, J.R. Stevens, W. J. Briscoe, R. A. Schumacher, Friedrich Klein, S. Taylor, I. A. Semenova, F. Mokaya, K. Goetzen, N. S. Jarvis, Ashot Gasparian, T. Whitlatch, C. Fanelli, G. Vasileiadis, Hovanes Egiyan, M. Kamel, Joerg Reinhold, A. Toro, D. I. Sober, Michael Dugger, J. Frye, Vincent Mathieu, D. Werthmüller, Justin I. McIntyre, Igor Strakovsky, M. Patsyuk, A. Tsaris, I. Kuznetsov, W. I. Levine, J. Zarling, A. Deur, R. E. Mitchell, R. T. Jones, A. Gerasimov, H. Hakobyan, M. E. McCracken, A. Dolgolenko, M. J. Staib, V. V. Berdnikov, N. Ochoa, L. Guo, B. Pratt, M. M. Ito, O. Chernyshov, R. Mendez, K. Livingston, V. S. Goryachev, K. Moriya, Krisztian Peters, Amiran Tomaradze, Michael R. Pennington, A. Henderson, Cornelius Schwarz, E. Pooser, G. M. Huber, P. Mattione, R. Kliemt, N. Sparks, W. U. Boeglin, B. E. Cannon, A. I. Ostrovidov, D. G. Ireland, A. Austregesilo, R.S. Pedroni, W. McGinley, G. J. Lolos, E. G. Anassontzis, C. A. Meyer, Barry Ritchie, Elton Smith, O. Soto, Ilya Larin, M. McCaughan, T. C. Black, Yujie Qiang, R. Miskimen, I. Tolstukhin, and E. Wolin
- Subjects
Physics ,Particle physics ,GlueX ,Proton ,010308 nuclear & particles physics ,Linear polarization ,media_common.quotation_subject ,Momentum transfer ,01 natural sciences ,7. Clean energy ,Asymmetry ,Nuclear physics ,0103 physical sciences ,Quasiparticle ,Nuclear Experiment ,010306 general physics ,Liquid hydrogen ,Beam (structure) ,media_common - Abstract
We report measurements of the photon beam asymmetry Σ for the reactions γ - p→pπ0 and γ - p→pη from the GlueX experiment using a 9 GeV linearly polarized, tagged photon beam incident on a liquid hydrogen target in Jefferson Lab's Hall D. The asymmetries, measured as a function of the proton momentum transfer, possess greater precision than previous π0 measurements and are the first η measurements in this energy regime. The results are compared with theoretical predictions based on t-channel, quasiparticle exchange and constrain the axial-vector component of the neutral meson production mechanism in these models.
- Published
- 2017
39. Characterization of novel Hamamatsu Multi Pixel Photon Counter (MPPC) arrays for the GlueX experiment
- Author
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Rimsky Alejandro Rojas, W. K. Brooks, O. Soto, Sergey Kuleshov, A. Toro, and H. Hakobyan
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Physics ,Nuclear and High Energy Physics ,Photon ,GlueX ,Pixel ,business.industry ,Photodetector ,Avalanche photodiode ,Particle detector ,Photodiode ,law.invention ,Optics ,law ,Scintillation counter ,business ,Instrumentation - Abstract
The novel Hamamatsu Multi Pixel Photon Counter Array S12045(X) is an array of 16 individual MPPCs (3×3 mm2) (further in the paper MPPC array channel) each with 3600 G-APD (Geiger-mode Avalanche Photodiodes) pixels (50×50 [ μ m 2 ]). Each MPPC in the array works with its individual reverse bias voltage mode (around 70 V). The paper summarizes the characterization process of MPPC arrays used in GlueX experiment (Hall D, Jefferson Lab). We studied the main features of each MPPC array channel for 2800 MPPC arrays at different temperatures. Two measurement stations were built to extract gain, breakdown voltage, photo detection efficiency (PDE), optical crosstalk and dark rate for each MPPC array channel. The hardware and the data analysis are described, which includes new analytical expressions to obtain the mean number of photo-electrons and optical crosstalk. The dynamical behavior of characterization parameters is presented as well.
- Published
- 2013
40. Saccharomyces cerevisiae strains with robust responses to fermentation stresses isolated from the alcoholic fermentation of Agave duranguensis musts
- Author
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O. Soto, E. Barrio, J. Paez, O. M. Rutiaga-Quintilde, ones, C. Belloch, and E. Cordova
- Subjects
Wine ,Ethanol ,biology ,food and beverages ,Fructose ,Industrial fermentation ,Plant Science ,Ethanol fermentation ,Agave ,biology.organism_classification ,Microbiology ,chemistry.chemical_compound ,Infectious Diseases ,chemistry ,Botany ,Fermentation ,Food science ,Sugar - Abstract
Yeasts used in fermentation processes are subject to different stress conditions, including low pH, high initial substrate concentration, accumulation of toxic compounds (e.g. ethanol), and temperature fluctuations. The fermentation of mescal is conducted under variable environmental conditions throughout the year. One of the most important environmental factors is temperature, as autumn and winter fermentations occur at low temperatures, but fermentation temperatures are much higher in summertime. The aim of this work was to compare the response of Saccharomyces cerevisiae strains isolated from agave fermentations to different stress conditions and two different medium culture one mimicking mezcal production, using agave must and other synthetic must development for analysis in wine industry. The strains isolated from agave were compared with a commercial strain used in wine elaboration, which exhibits good tolerance to the different stresses found in industrial fermentations. All strains grew in the presence of glucose and fructose irrespective of the sugar concentration, and low pH did not affect the formation of colonies. Differences in growth were observed among the strains at low temperature and high concentrations of ethanol. Only 28% of the tested strains exhibited good tolerance to high ethanol concentrations, a desirable trait for avoiding stuck fermentations. The strain ITD00185 was able to grow in alcoholic stress condition, consuming sugar and producing ethanol in agave must. This strain shows tolerance to the different stress conditions and may be a useful starter culture for agave fermentation, the potential of the native strains to be used to improve other industrial fermentation processes that involve low temperatures and high ethanol yields. Key words: Ethanol, tolerance, Mescal, native strains.
- Published
- 2011
41. EFECTO DE LAS HORMONAS OXITOCINA Y PROSTAGLANDINA F2a DURANTE LA INSEMINACIÓN ARTIFICIAL SOBRE LA EFICIENCIA REPRODUCTIVA EN CERDAS
- Author
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Melvin Pagán, Vivian Navas, Jay O. Soto-Vélez, and Carmen S. Santana
- Subjects
Animal Science and Zoology ,Agronomy and Crop Science - Abstract
EFECTO DE LAS HORMONAS OXITOCINA Y PROSTAGLANDINA F2a DURANTE LA INSEMINACIÓN ARTIFICIAL SOBRE LA EFICIENCIA REPRODUCTIVA EN CERDAS
- Published
- 2007
42. Neuroinflammation and Alteration of the Blood-Brain Barrier in Alzheimer´s Disease
- Author
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Marco Antonio Meraz-Ríos, Citlaltepetl Salinas-Lara, María del CarmenCárdenas-Aguayo, Amparo Viramontes-Pintos, Fidel de la Cruz-Lopez, Benjamín Florán-Garduño, Miguel Ángel Ontiveros Torres, José Luna-Muñoz, and Luis O. Soto-Rojas
- Subjects
Pathology ,medicine.medical_specialty ,medicine.anatomical_structure ,business.industry ,mental disorders ,medicine ,Disease ,business ,Blood–brain barrier ,Neuroinflammation - Published
- 2015
43. [Untitled]
- Author
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O. Soto, Marlene Roeckel, Omar Sánchez, and Estrella Aspé
- Subjects
education.field_of_study ,Denitrification ,Ecology ,Population ,Biomass ,Bioengineering ,Sequencing batch reactor ,General Medicine ,Applied Microbiology and Biotechnology ,Anoxic waters ,chemistry.chemical_compound ,Denitrifying bacteria ,Nitrate ,chemistry ,Volatile suspended solids ,Environmental chemistry ,education ,Biotechnology - Abstract
Denitrification was studied in anoxic batch cultures of a simulated fish processing wastewater at 37 r C and pH 7.5, using a denitrifying enrichment culture from fishery wastewater. Different initial nitrate to biomass ratios (So/Xo) were used: nitrate and biomass varied from 7.5 to 94.7 mg NO3-N l−1, and from 20 to 4300 mg volatile suspended solids l−1, respectively. The specific maximum denitrification rate (r m) and the cell yield (Y X / S) depended on the So/Xo ratio under anoxic conditions: r m increased from 1.2 to 1584 mg NO3-N g−1 VSS h−1 and Y X / S decreased from 42 to 0.03 mg VSS mg−1 NO3-N when So/Xo varied from 5.5 ⋅ 10− 3 to 9.3 mg NO3-N/mg VSS. Nomenclature CNO3 − N nitrate concentration, mg NO3-N l−1 K S saturation constant, mg NO3-N l−1 r m specific maximum denitrification rate, mg NO3-N g−1 VSS h−1 So initial substrate concentration, mg l−1 t time, h TOC total organic carbon VSS volatile suspended solids x biomass concentration, g VSS l−1 Xo initial biomass concentration, g VSS l−1 Y X/S substrate to biomass cell yield, mg VSS/mg N Greek symbols: μm maximum specific growth rate of the anoxic microbial population, 1 h−1
- Published
- 2002
44. Unlocking the Potential of Mexican Offshore Fields through Real-Time Optimized Placement of Carbonate Acidizing Treatments
- Author
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I. Rosado Rivero, L.A. Inda Herrera, E. O. Soto Lopez, A. L. Murillo Vallejo, S. Worden, Pierre Ramondenc, and A. Inda Lopez
- Subjects
chemistry.chemical_compound ,Engineering ,Mining engineering ,chemistry ,Petroleum engineering ,business.industry ,Carbonate ,Submarine pipeline ,business - Abstract
Mexico has long based its strength on the exploitation of its offshore fields to become one of the largest oil producers in the world. Although still yielding most of its production today, those mature fields have entered a downward trend for the past few years, with a gradual decline of their hydrocarbon output. This trend coincided with an increase in work over operations, most of them involving matrix acidizing interventions in carbonate formations for damage removal and stimulation purposes. Matrix stimulation of offshore Mexico fields presents several challenges, starting with the very nature of the carbonate rocks composing the reservoirs, whose properties can greatly vary within a short distance. In addition, the well conditions are also at times not well understood, with perforated intervals heterogeneously producing, and the increasing occurrence of water production. Finally, due to the location offshore, time-efficiency and operational simplicity became important workover requirements that have a direct impact on the chosen stimulation procedure, often achieved using a simple bullheading sequence, which unfortunately leaves the much needed control of zonal coverage out of the equation. This paper presents a carbonate acidizing workflow and interpretation method that have been developed and successfully implemented in offshore Mexico over the past couple of years. This technique constitutes the cornerstone to assessing and controlling matrix acidizing treatment coverage while it is pumped, in real-time, to ensure optimum treatment performance and maximum return on costs. The workflow relies on the use of a fiber-optic line enclosed inside a coiled tubing (CT) string to acquire distributed temperature sensing data, which are analyzed and translated into a zonal coverage profile using a fast interpretation algorithm. This information then allows stimulation engineers to determine the best strategy for the subsequent well stimulation treatment, including fluid volumes and placement sequence. As the case studies presented in this study will show, there is a lot to gain from this improved methodology. In particular, they show that the long-standing blind bullheading practice results in some shortcomings that may be detrimental to truly unlocking the full potential of those offshore fields.
- Published
- 2014
45. Clinical and radiographic evaluation of the Harris-Galante Cup
- Author
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Manuel O. Soto, Chitranjan S. Ranawat, and Jose A. Rodriguez
- Subjects
Intermediate term ,medicine.medical_specialty ,Osteolysis ,business.industry ,Radiography ,Total hip replacement ,Implant failure ,Periprosthetic osteolysis ,Femoral stem ,medicine.disease ,Surgery ,Femoral head ,medicine.anatomical_structure ,medicine ,Orthopedics and Sports Medicine ,business - Abstract
A retrospective evaluation of the clinical and radiographic results of the Harris-Galante acetabular cups was performed in 112 patients with 127 total hip arthroplasties. Patients with 14 hips had died, and patients with 20 hips were lost to follow-up. A total of 82 patients with 93 hips was available for follow-up. There were 67 men and 45 women. The mean follow-up was 87 months (range, 48–113 months). There were a total of 9 revisions: 2 for recurrent dislocations, 1 for a loose cup, and 6 for wear and osteolysis. Radiographic evaluation demonstrated that 22 (24%) hips had periacetabular osteolysis, and 16 of these 22 (73%) were associated with the screws. Twenty-two hips (23%) demonstrated osteolytic lesions around the femoral stem. Mean femoral head displacement was of 1.00 mm (range, 0.40–4.5 mm) with a rate of 0.16 mm/yr (range, 0.05–0.44 mm/yr). The Harris-Galante socket has maintained a low implant failure rate at intermediate term, even in these young patients. As follow-up increases, wear of the polyethylene and periprosthetic osteolysis may become growing concerns.
- Published
- 2000
46. Further assessment of the clinically effective dose range of etoricoxib: a randomized, double-blinded, placebo-controlled trial in rheumatoid arthritis
- Author
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N. Frontera, X.J. Zhan, Anish Mehta, Paul M. Peloso, O. Soto, D. Mandel, Sean P. Curtis, M. Greenwald, and Judith A. Boice
- Subjects
Male ,medicine.medical_specialty ,Pyridines ,Placebo-controlled study ,Pain ,Placebo ,Etoricoxib ,Double-Blind Method ,Internal medicine ,Clinical endpoint ,Medicine ,Humans ,Sulfones ,Aged ,Cyclooxygenase 2 Inhibitors ,Dose-Response Relationship, Drug ,business.industry ,General Medicine ,Middle Aged ,medicine.disease ,Effective dose (pharmacology) ,Rheumatology ,Rheumatoid arthritis ,Physical therapy ,Methotrexate ,Female ,Rheumatic Fever ,business ,medicine.drug - Abstract
To further assess the clinically active dose range of etoricoxib, a COX-2 selective inhibitor, in rheumatoid arthritis (RA).RA patients were randomized to etoricoxib 10, 30, 60, or 90 mg or placebo in a double-blind, 12-week study. DMARDs (methotrexate, biologics) or low-dose corticosteroids were allowed in stable doses. The primary endpoint was the proportion of patients completing the study and achieving an American College of Rheumatology 20% (ACR20) response. Secondary endpoints included individual components of the ACR index and Patient Global Assessment of Pain. Safety was assessed by physical exam and adverse experiences (AEs) occurrences.Etoricoxib 90 mg was the only dose to reach a statistically significant difference from placebo (p 0.001) on the primary endpoint; etoricoxib 60 mg approached significance (p = 0.057). Significant pain improvement vs. placebo was observed with etoricoxib 90 mg (p 0.001), 60 mg (p = 0.018), and 30 mg (p = 0.017). Despite the use of background biologics and corticosteroids, a dose response was still apparent. A higher proportion of etoricoxib 60 and 90 mg patients had renovascular AEs (i.e., edema and hypertension) compared with placebo, although discontinuations for renovascular AEs were rare. Etoricoxib 90 mg had a higher incidence of serious AEs (n = 5; 1 was considered drug-related) versus placebo (n = 0).The present study was not powered to detect differences in cardiovascular or gastrointestinal safety by dose. Additionally, further research is needed to clarify the role of doses less than the etoricoxib 90 mg dose for pain management in RA patients.Etoricoxib 90 mg demonstrated statistically superior efficacy (ACR20) compared with placebo and numerical superiority over the other doses of etoricoxib studied. Etoricoxib 30 and 60 mg demonstrated significant pain improvement versus placebo, suggesting utility for some patients.
- Published
- 2011
47. Testing and Evaluating the Single Objective Intelligent Evolutionary Algorithm through a Graphic Interface
- Author
-
Oscar Castillo, Oscar Montiel, O. Soto, and Roberto Sepúlveda
- Subjects
business.industry ,Evolutionary algorithm ,Extension (predicate logic) ,Machine learning ,computer.software_genre ,Fuzzy logic ,Evolutionary computation ,Differential evolution ,Artificial intelligence ,State (computer science) ,business ,computer ,Global optimization ,Mathematics ,Graphical user interface - Abstract
The human evolutionary model is an intelligent global optimization method conceived to perform single and multiple objective optimization, this general method is still in development, especially the multi objective (MO) part is being improved. The single objective (SO) part has demonstrated that outperforms several algorithms that are in the state of the art, for example differential evolution (DE), particle swarm optimizer, and others, we called this part single objective intelligent evolutionary algorithm (SO-IEA). The SO-IEA uses mediative fuzzy logic (MFL) for handling doubtful and contradictory information from experts to calculate the appropriated amount of individuals to create and/or to eliminate. MFL is an extension of traditional fuzzy logic and includes intuitionistic fuzzy logic (IFL) in the Atanassov sense. In this work, we are presenting the algorithm's architecture, experimental results, and a graphical interface that will help to handle the required parameters to use the SO-IEA.
- Published
- 2007
48. Adult botulism
- Author
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B E, Shapiro, O, Soto, S, Shafqat, and H, Blumenfeld
- Subjects
Cellular and Molecular Neuroscience ,Physiology ,Physiology (medical) ,Neural Conduction ,Reaction Time ,Humans ,Botulism ,Female ,Neurology (clinical) ,Middle Aged - Published
- 1997
49. Development of a bioremediation process by biostimulation of native microbial consortium through the heap leaching technique
- Author
-
H. Medrano-Roldán, H. Pérez-Andrade, A. Salinas-Martínez, L.A. Háuad-Marroquín, M. de los Santos-Córdova, E. Delgado, and O. Soto-Cruz
- Subjects
Environmental Engineering ,Time Factors ,Waste management ,Heap leaching ,Lessivage ,General Medicine ,Management, Monitoring, Policy and Law ,Microbial consortium ,Biodegradation ,Pulp and paper industry ,Soil contamination ,Flavobacterium ,Hydrocarbons ,Mining ,Biostimulation ,Bioremediation ,Aspergillus ,Biodegradation, Environmental ,Bioreactors ,Environmental science ,Soil Pollutants ,Leaching (agriculture) ,Waste Management and Disposal - Abstract
Heap leaching is an effective and widely used method of recovering metals from low-grade ores. However, the heap leaching technique has not yet been used in other biotechnological processes such as bioremediation. This work describes biostimulation of the native microbial consortium as a novel application of the heap leaching technique to bioremediate mining soils contaminated with hydrocarbons. Microorganisms present in the polluted soil were isolated in a liquid mineral solution using diesel fuel as the sole energy and carbon source. Biodegradation activity was evaluated and two genera, Flavobacterium and Aspergillus , were identified as the primary microorganisms that degraded hydrocarbons in the polluted soil. In order to simulate the heap leaching process on a laboratory scale, using both columns and piles, the contaminated soil was mixed with different sand concentrations and was agglomerated before it was used. Three flow rates, of the mineral solution, were evaluated. Of the rates tested, biodegradation was most efficient at a flow rate of 200 ml h −1 . The heap leaching technique demonstrated good efficiency in the column and pile, with a 2% soil–sand mixture lowering the TPH concentration from 61,000 to 1800 mg kg −1 (98.5%) in 15 d.
- Published
- 2005
50. Combined median and medial antebrachial cutaneous neuropathies: an upper-arm neurovascular syndrome
- Author
-
D, Lázaro-Blázquez and O, Soto
- Subjects
Male ,Aortic Aneurysm, Thoracic ,Brachial Artery ,Median Neuropathy ,Peripheral Nervous System Diseases ,Aorta, Thoracic ,Magnetic Resonance Imaging ,Median Nerve ,Blood Vessel Prosthesis Implantation ,Muscular Atrophy ,Thoracic Outlet Syndrome ,Catheterization, Peripheral ,Nerve Degeneration ,Axillary Artery ,Humans ,Aneurysm, False ,Angioplasty, Balloon ,Aged ,Follow-Up Studies ,Skin - Abstract
The neurovascular bundle anatomy in the upper arm displays changing relationships of nerve and vascular structures along short segments. Fibrous tissues segregate these elements into enclosed compartments allowing for specific patterns of injury. We report a patient with a iatrogenic brachial artery injury in this region who featured combined median and MAC neuropathies, which were consistent with complete axonotmesis on neurophysiological assessment. Increased intracompartmental pressure may have led to nerve injury either thorough an ischemic mechanism or to focal compression. Recognition of this unusual pattern of nerve damage is important, since injury can be accurately localized to the midportion of the neurovascular compartment in the upper arm.
- Published
- 2004
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