26 results on '"Soto RA"'
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2. Three failures of social psychology, and a phenomenological way forward
- Author
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Soto Ramírez, Juan
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Interpretation ,Culture ,Phenomenology ,History of scholarship and learning. The humanities ,AZ20-999 ,Social sciences (General) ,H1-99 - Abstract
This article finds fault with three practices in social psychology. The first, interpretative condescension, is visible in social psychology's use of the “person” as a term, concept, notion, and so on. Generally, “persons” are taken to be “cultural dopes”, for no compelling reason or justification. The second questionable practice, the absence of culture in psychology is the failure, in various kinds of social psychology research, to acknowledge the role or indeed the existence of ‘culture’. The third, the absence of phenomenological spirit, is another critical absence, but I use it as a point of departure in search of new ways of building social psychological knowledge.
- Published
- 2008
3. The role and limitations of electronic medical records versus patient interviews for determining symptoms of, underlying comorbidities of, and medication use by patients with COVID-19.
- Author
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Soto RA, Vahey GM, Marshall KE, McDonald E, Herlihy R, Chun HM, Killerby ME, Kawasaki B, Midgley CM, Alden NB, Tate JE, Staples JE, and Team CI
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- Humans, Male, Female, Middle Aged, Aged, SARS-CoV-2, Adult, Data Accuracy, COVID-19 epidemiology, Electronic Health Records statistics & numerical data, Comorbidity, Interviews as Topic
- Abstract
Electronic medical records (EMRs) are important for rapidly compiling information to determine disease characteristics (eg, symptoms) and risk factors (eg, underlying comorbidities, medications) for disease-related outcomes. To assess EMR data accuracy, agreement between EMR abstractions and patient interviews was evaluated. Symptoms, medical history, and medication use among patients with COVID-19 collected from EMRs and patient interviews were compared using overall agreement (ie, same answer in EMR and interview), reported agreement (yes answer in both EMR and interview among those who reported yes in either), and κ statistics. Overall, patients reported more symptoms in interviews than in EMR abstractions. Overall agreement was high (≥50% for 20 of 23 symptoms), but only subjective fever and dyspnea had reported agreement of ≥50%. The κ statistics for symptoms were generally low. Reported medical conditions had greater agreement with all condition categories (n = 10 of 10) having ≥50% overall agreement and half (n = 5 of 10) having ≥50% reported agreement. More nonprescription medications were reported in interviews than in EMR abstractions, leading to low reported agreement (28%). Discordance was observed for symptoms, medical history, and medication use between EMR abstractions and patient interviews. Investigations using EMRs to describe clinical characteristics and identify risk factors should consider the potential for incomplete data, particularly for symptoms and medications., (Published by Oxford University Press on behalf of the Johns Hopkins Bloomberg School of Public Health 2024.)
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- 2024
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4. Comparison of Gamma-Oryzanol Nanoemulsions Fabricated by Different High Energy Techniques.
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Jaime-Báez R, Saldo J, and González-Soto RA
- Abstract
Gamma-oryzanol (GO) is a bioactive compound that, due to its biological characteristics, can be added to a food matrix. However, the bioactive compound is difficult to incorporate due to its low solubility and stability. A nanoemulsion allows substances to be packaged in nanometric sizes, improving their bioavailability. In this work, a GO nanoemulsion was developed using high-energy techniques. The methodological process began with the formulation of the coarse emulsion, where the emulsifiers (sodium caseinate and citrus pectin), diluent (rice bran oil), and pH were varied to find the most stable formulation. The coarse emulsion was subjected to four high-energy techniques (conventional homogenization, high-pressure homogenization, ultra-high-pressure homogenization, and ultrasonication) to reduce the droplet size. A physical-stability test, rheological-behavior test, image analysis, and particle-size-and-distribution test were conducted to determine which was the best technique. The formulation with the highest stability (pH 5.3) was composed of 87% water, 6.1% sodium caseinate, 0.6% citrus pectin, 6.1% rice bran oil, and 0.2% GO. The ultrasonic treatment obtains the smallest particle size (30.1 ± 1 nm), and the high-pressure treatment obtains the greatest stability (TSI < 0.3), both at 0 and 7 days of storage. High-energy treatments significantly reduce the droplet size of the emulsion, with important differences between each technique.
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- 2024
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5. Enhancing Eastern Equine Encephalitis Virus Surveillance in New Jersey: Optimized Collection of Culiseta melanura.
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Fagre AC, Soto RA, Magleby R, Cuadera MKQ, Sun A, Cervantes K, Crans SC, Panella NA, Kenney JL, Angelus A, Burkhalter KL, Woell D, Horiuchi K, Biggerstaff BJ, Staples JE, Connelly R, Martin SW, and Komar N
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- Animals, New Jersey epidemiology, Female, Mosquito Vectors virology, Encephalitis Virus, Eastern Equine isolation & purification, Culicidae virology, Mosquito Control
- Abstract
Eastern equine encephalitis virus (EEEV) causes the most clinically severe neuroinvasive arboviral disease in the United States. The virus is endemic in eastern and Gulf Coast states and the Great Lakes region, causing cases annually. To detect EEEV circulation in its enzootic cycle before the virus infects humans and other mammals, mosquito control agencies in New Jersey have conducted mosquito surveillance using a series of permanent wooden resting box sites since 1975. We conducted 2 field studies, 1 evaluating resting traps and 1 evaluating efficacy of CO2 lures, to optimize collection of Culiseta melanura, the primary enzootic vector of EEEV. Resulting mosquito samples were subjected to molecular analysis to determine EEEV infection rates. Corrugated plastic boxes trapped more bloodfed Cs. melanura than other resting trap types (resting boxes, Centers for Disease Control and Prevention [CDC] resting traps, or fiber pots) and were similar to resting boxes in total number of female Cs. melanura caught. Further, non-baited CDC light traps were more successful in trapping host-seeking Cs. melanura than those baited with dry ice, a CO2 lure. The EEEV RNA was identified in Cs. melanura, Aedes vexans, Anopheles quadrimaculatus, and Uranotaenia sapphirina. Our findings indicate that corrugated plastic boxes and non-CO2 baited traps could improve detection of Cs. melanura. Mosquito control agencies are encouraged to periodically assess their surveillance strategy for EEEV., (Copyright © 2024 by The American Mosquito Control Association, Inc.)
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- 2024
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6. A lethal mitonuclear incompatibility in complex I of natural hybrids.
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Moran BM, Payne CY, Powell DL, Iverson ENK, Donny AE, Banerjee SM, Langdon QK, Gunn TR, Rodriguez-Soto RA, Madero A, Baczenas JJ, Kleczko KM, Liu F, Matney R, Singhal K, Leib RD, Hernandez-Perez O, Corbett-Detig R, Frydman J, Gifford C, Schartl M, Havird JC, and Schumer M
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- Animals, Alleles, Homozygote, Species Specificity, Embryonic Development genetics, Heterozygote, Evolution, Molecular, Electron Transport Complex I genetics, Fishes classification, Fishes embryology, Fishes genetics, Fishes growth & development, Hybridization, Genetic, Genes, Lethal genetics, Genetic Speciation, Mitochondrial Proteins genetics, Cell Nucleus genetics
- Abstract
The evolution of reproductive barriers is the first step in the formation of new species and can help us understand the diversification of life on Earth. These reproductive barriers often take the form of hybrid incompatibilities, in which alleles derived from two different species no longer interact properly in hybrids
1-3 . Theory predicts that hybrid incompatibilities may be more likely to arise at rapidly evolving genes4-6 and that incompatibilities involving multiple genes should be common7,8 , but there has been sparse empirical data to evaluate these predictions. Here we describe a mitonuclear incompatibility involving three genes whose protein products are in physical contact within respiratory complex I of naturally hybridizing swordtail fish species. Individuals homozygous for mismatched protein combinations do not complete embryonic development or die as juveniles, whereas those heterozygous for the incompatibility have reduced complex I function and unbalanced representation of parental alleles in the mitochondrial proteome. We find that the effects of different genetic interactions on survival are non-additive, highlighting subtle complexity in the genetic architecture of hybrid incompatibilities. Finally, we document the evolutionary history of the genes involved, showing signals of accelerated evolution and evidence that an incompatibility has been transferred between species via hybridization., (© 2024. The Author(s).)- Published
- 2024
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7. Transmission of yellow fever vaccine virus through blood transfusion and organ transplantation in the USA in 2021: report of an investigation.
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Gould CV, Free RJ, Bhatnagar J, Soto RA, Royer TL, Maley WR, Moss S, Berk MA, Craig-Shapiro R, Kodiyanplakkal RPL, Westblade LF, Muthukumar T, Puius YA, Raina A, Hadi A, Gyure KA, Trief D, Pereira M, Kuehnert MJ, Ballen V, Kessler DA, Dailey K, Omura C, Doan T, Miller S, Wilson MR, Lehman JA, Ritter JM, Lee E, Silva-Flannery L, Reagan-Steiner S, Velez JO, Laven JJ, Fitzpatrick KA, Panella A, Davis EH, Hughes HR, Brault AC, St George K, Dean AB, Ackelsberg J, Basavaraju SV, Chiu CY, and Staples JE
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- Humans, Blood Transfusion, United States epidemiology, Yellow fever virus genetics, Encephalitis chemically induced, Organ Transplantation adverse effects, Yellow Fever Vaccine
- Abstract
Background: In 2021, four patients who had received solid organ transplants in the USA developed encephalitis beginning 2-6 weeks after transplantation from a common organ donor. We describe an investigation into the cause of encephalitis in these patients., Methods: From Nov 7, 2021, to Feb 24, 2022, we conducted a public health investigation involving 15 agencies and medical centres in the USA. We tested various specimens (blood, cerebrospinal fluid, intraocular fluid, serum, and tissues) from the organ donor and recipients by serology, RT-PCR, immunohistochemistry, metagenomic next-generation sequencing, and host gene expression, and conducted a traceback of blood transfusions received by the organ donor., Findings: We identified one read from yellow fever virus in cerebrospinal fluid from the recipient of a kidney using metagenomic next-generation sequencing. Recent infection with yellow fever virus was confirmed in all four organ recipients by identification of yellow fever virus RNA consistent with the 17D vaccine strain in brain tissue from one recipient and seroconversion after transplantation in three recipients. Two patients recovered and two patients had no neurological recovery and died. 3 days before organ procurement, the organ donor received a blood transfusion from a donor who had received a yellow fever vaccine 6 days before blood donation., Interpretation: This investigation substantiates the use of metagenomic next-generation sequencing for the broad-based detection of rare or unexpected pathogens. Health-care workers providing vaccinations should inform patients of the need to defer blood donation for at least 2 weeks after receiving a yellow fever vaccine. Despite mitigation strategies and safety interventions, a low risk of transfusion-transmitted infections remains., Funding: US Centers for Disease Control and Prevention (CDC), the Biomedical Advanced Research and Development Authority, and the CDC Epidemiology and Laboratory Capacity Cooperative Agreement for Infectious Diseases., Competing Interests: Declaration of interests LFW received research funding from Accelerate Diagnostics, bioMérieux, Hardy Diagnostics, Roche Molecular Systems, and Selux Diagnostics and honoraria from Roche Molecular Systems, Shionogi, and Talis Biomedical, all unrelated to this work. KSG received research support from ThermoFisher and has a royalty-generating collaborative agreement with ZeptoMetrix, both unrelated to this work. MRW received research grant funding from Roche/Genentech and Novartis and speaking honoraria from Genentech, Novartis, Takeda, and WebMD, all unrelated to this work. CYC received research grant funding from the Bay Area Lyme Disease Foundation and the Chan-Zuckerberg Biohub, unrelated to this work, and is on the scientific advisory board for Mammoth Biosciences, Poppy Health, and BiomeSense. MRW and CYC are consultants and co-founders of Delve Bio. CYC is a co-inventor on US patent 11380421, Pathogen Detection Using Next Generation Sequencing, under which algorithms for taxonomic classification, filtering, and pathogen detection are used by SURPI+ software., (Copyright © 2023 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY-NC-ND 4.0 license. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2023
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8. Increase in Colorado Tick Fever Virus Disease Cases and Effect of COVID-19 Pandemic on Behaviors and Testing Practices, Montana, 2020.
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Soto RA, Baldry E, Vahey GM, Lehman J, Silver M, Panella A, Brault AC, Hughes HR, Fitzpatrick KA, Velez J, Biggerstaff BJ, Wolff B, Randolph J, Ruth LJ, Staples JE, and Gould CV
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- Humans, Montana, COVID-19 Testing, Case-Control Studies, Pandemics, SARS-CoV-2, Colorado tick fever virus, COVID-19, Colorado Tick Fever epidemiology
- Abstract
In 2020, Montana, USA, reported a large increase in Colorado tick fever (CTF) cases. To investigate potential causes of the increase, we conducted a case-control study of Montana residents who tested positive or negative for CTF during 2020, assessed healthcare providers' CTF awareness and testing practices, and reviewed CTF testing methods. Case-patients reported more time recreating outdoors on weekends, and all reported finding a tick on themselves before illness. No consistent changes were identified in provider practices. Previously, only CTF serologic testing was used in Montana. In 2020, because of SARS-CoV-2 testing needs, the state laboratory sent specimens for CTF testing to the Centers for Disease Control and Prevention, where more sensitive molecular methods are used. This change in testing probably increased the number of CTF cases detected. Molecular testing is optimal for CTF diagnosis during acute illness. Tick bite prevention measures should continue to be advised for persons doing outdoor activities.
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- 2023
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9. Behaviors Associated With Household Transmission of SARS-CoV-2 in California and Colorado, January 2021-April 2021.
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Namageyo-Funa A, Ruffin JD, Killerby ME, Jalloh MF, Scott C, Lindell K, Silver M, Matanock A, Soto RA, Donnelly MAP, Schwartz NG, Chuey MR, Chu VT, Beatty ME, Totten SE, Hudziec MM, Tate JE, Kirking HL, and Hsu CH
- Abstract
Introduction: Mitigation behaviors are key to preventing SARS-CoV-2 transmission. We identified the behaviors associated with secondary transmission from confirmed SARS-CoV-2 primary cases to household contacts and described the characteristics associated with reporting these behaviors., Methods: Households with confirmed SARS-CoV-2 infections were recruited in California and Colorado from January to April 2021. Self-reported behaviors and demographics were collected through interviews. We investigated behaviors associated with transmission and individual and household characteristics associated with behaviors using univariable and multivariable logistic regression with generalized estimating equations to account for household clustering., Results: Among household contacts of primary cases, 43.3% (133 of 307) became infected with SARS-CoV-2. When an adjusted analysis was conducted, household contacts who slept in the same bedroom with the primary case (AOR=2.19; 95% CI=1.25, 3.84) and ate food prepared by the primary case (AOR=1.98; 95% CI=1.02, 3.87) had increased odds of SARS-CoV-2 infection. Household contacts in homes ≤2,000 square feet had increased odds of sleeping in the same bedroom as the primary case compared with those in homes >2,000 square feet (AOR=3.97; 95% CI=1.73, 9.10). Parents, siblings, and other relationships (extended family, friends, or roommates) of the primary case had decreased odds of eating food prepared by the primary case compared with partners., Conclusions: Sleeping in the same bedroom as the primary case and eating food prepared by the primary case were associated with secondary transmission. Household dimension and relationship to the primary case were associated with these behaviors. Our findings encourage innovative means to promote adherence to mitigation measures that reduce household transmission., (© 2022 The Author(s).)
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- 2022
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10. SARS-CoV-2 infection risk among vaccinated and unvaccinated household members during the Alpha variant surge - Denver, Colorado, and San Diego, California, January-April 2021.
- Author
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McCormick DW, Konkle SL, Magleby R, Chakrabarti AK, Cherney B, Lindell K, Namageyo-Funa A, Visser S, Soto RA, Donnelly MAP, Stringer G, Austin B, Beatty ME, Stous S, Albanese BA, Chu VT, Chuey M, Dietrich EA, Drobeniuc J, Folster JM, Killerby ME, Lehman JA, McDonald EC, Ruffin J, Schwartz NG, Sheldon SW, Sleweon S, Thornburg NJ, Hughes LJ, Petway M, Tong S, Whaley MJ, Kirking HL, Tate JE, Hsu CH, and Matanock A
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- COVID-19 Vaccines, California epidemiology, Colorado epidemiology, Humans, COVID-19 epidemiology, COVID-19 prevention & control, SARS-CoV-2
- Abstract
Background: COVID-19 vaccination reduces SARS-CoV-2 infection and transmission. However, evidence is emerging on the degree of protection across variants and in high-transmission settings. To better understand the protection afforded by vaccination specifically in a high-transmission setting, we examined household transmission of SARS-CoV-2 during a period of high community incidence with predominant SARS-CoV-2 B.1.1.7 (Alpha) variant, among vaccinated and unvaccinated contacts., Methods: We conducted a household transmission investigation in San Diego County, California, and Denver, Colorado, during January-April 2021. Households were enrolled if they had at least one person with documented SARS-CoV-2 infection. We collected nasopharyngeal swabs, blood, demographic information, and vaccination history from all consenting household members. We compared infection risks (IRs), RT-PCR cycle threshold values, SARS-CoV-2 culture results, and antibody statuses among vaccinated and unvaccinated household contacts., Results: We enrolled 493 individuals from 138 households. The SARS-CoV-2 variant was identified from 121/138 households (88%). The most common variants were Alpha (75/121, 62%) and Epsilon (19/121, 16%). There were no households with discordant lineages among household members. One fully vaccinated secondary case was symptomatic (13%); the other 5 were asymptomatic (87%). Among unvaccinated secondary cases, 105/108 (97%) were symptomatic. Among 127 households with a single primary case, the IR for household contacts was 45% (146/322; 95% Confidence Interval [CI] 40-51%). The observed IR was higher in unvaccinated (130/257, 49%, 95% CI 45-57%) than fully vaccinated contacts (6/26, 23%, 95% CI 11-42%). A lower proportion of households with a fully vaccinated primary case had secondary cases (1/5, 20%) than households with an unvaccinated primary case (66/108, 62%)., Conclusions: Although SARS-CoV-2 infections in vaccinated household contacts were reported in this high transmission setting, full vaccination protected against SARS-CoV-2 infection. These findings further support the protective effect of COVID-19 vaccination and highlight the need for ongoing vaccination among eligible persons., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Published by Elsevier Ltd.)
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- 2022
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11. West Nile Virus and Other Domestic Nationally Notifiable Arboviral Diseases - United States, 2020.
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Soto RA, Hughes ML, Staples JE, and Lindsey NP
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- Animals, Disease Outbreaks, Humans, Population Surveillance, United States epidemiology, Arbovirus Infections epidemiology, Culicidae, West Nile Fever epidemiology, West Nile virus
- Abstract
Arthropod-borne viruses (arboviruses) are transmitted to humans primarily through the bite of infected mosquitoes and ticks. West Nile virus (WNV), mainly transmitted by Culex species mosquitos, is the leading cause of domestically acquired arboviral disease in the United States (1). Other arboviruses cause sporadic cases of disease and occasional outbreaks. This report summarizes passive data for nationally notifiable domestic arboviruses in the United States reported to CDC for 2020. Forty-four states reported 884 cases of domestic arboviral disease, including those caused by West Nile (731), La Crosse (88), Powassan (21), St. Louis encephalitis (16), eastern equine encephalitis (13), Jamestown Canyon (13), and unspecified California serogroup (2) viruses. A total of 559 cases of neuroinvasive WNV disease were reported, for a national incidence of 0.17 cases per 100,000 population. Because arboviral diseases continue to cause serious illness and the locations of outbreaks vary annually, health care providers should consider arboviral infections in patients with aseptic meningitis or encephalitis that occur during periods when ticks and mosquitoes are active, perform recommended diagnostic testing, and promptly report cases to public health authorities to guide prevention strategies and messaging., Competing Interests: All authors have completed and submitted the International Committee of Medical Journal Editors form for disclosure of potential conflicts of interest. No potential conflicts of interest were disclosed.
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- 2022
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12. West Nile Virus Transmission by Solid Organ Transplantation and Considerations for Organ Donor Screening Practices, United States.
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Soto RA, McDonald E, Annambhotla P, Velez JO, Laven J, Panella AJ, Machesky KD, White JL, Hyun J, Freuck E, Habel J, Oh D, Levi M, Hasz R, Eidbo E, Staples JE, Basavaraju SV, and Gould CV
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- Donor Selection, Humans, Tissue Donors, United States epidemiology, Organ Transplantation adverse effects, West Nile Fever diagnosis, West Nile Fever epidemiology, West Nile virus
- Abstract
West Nile virus (WNV) is the most common domestic arbovirus in the United States. During 2018, WNV was transmitted through solid organ transplantation to 2 recipients who had neuroinvasive disease develop. Because of increased illness and death in transplant recipients, organ procurement organizations should consider screening during region-specific WNV transmission months.
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- 2022
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13. Sequential regulation of hemogenic fate and hematopoietic stem and progenitor cell formation from arterial endothelium by Ezh1/2.
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Soto RA, Najia MAT, Hachimi M, Frame JM, Yette GA, Lummertz da Rocha E, Stankunas K, Daley GQ, and North TE
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- Animals, Embryo, Nonmammalian metabolism, Endothelial Cells metabolism, Gene Knockdown Techniques, Hematopoiesis, Loss of Function Mutation, Lymphocytes metabolism, Mice, RNA-Seq, Single-Cell Analysis, Enhancer of Zeste Homolog 2 Protein metabolism, Hemangioblasts metabolism, Hematopoietic Stem Cells metabolism, Polycomb Repressive Complex 2 metabolism, Zebrafish metabolism, Zebrafish Proteins metabolism
- Abstract
Across species, hematopoietic stem and progenitor cells (HSPCs) arise during embryogenesis from a specialized arterial population, termed hemogenic endothelium. Here, we describe a mechanistic role for the epigenetic regulator, Enhancer of zeste homolog-1 (Ezh1), in vertebrate HSPC production via regulation of hemogenic commitment. Loss of ezh1 in zebrafish embryos favored acquisition of hemogenic (gata2b) and HSPC (runx1) fate at the expense of the arterial program (ephrinb2a, dll4). In contrast, ezh1 overexpression blocked hematopoietic progression via maintenance of arterial gene expression. The related Polycomb group subunit, Ezh2, functioned in a non-redundant, sequential manner, whereby inhibition had no impact on arterial identity, but was capable of blocking ezh1-knockdown-associated HSPC expansion. Single-cell RNA sequencing across ezh1 genotypes revealed a dropout of ezh1
+/- cells among arterial endothelium associated with positive regulation of gene transcription. Exploitation of Ezh1/2 modulation has potential functional relevance for improving in vitro HSPC differentiation from induced pluripotent stem cell sources., (Copyright © 2021 The Authors. Published by Elsevier Inc. All rights reserved.)- Published
- 2021
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14. Metabolic Regulation of Inflammasome Activity Controls Embryonic Hematopoietic Stem and Progenitor Cell Production.
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Frame JM, Kubaczka C, Long TL, Esain V, Soto RA, Hachimi M, Jing R, Shwartz A, Goessling W, Daley GQ, and North TE
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- Animals, Cell Differentiation physiology, Core Binding Factor Alpha 2 Subunit metabolism, Embryo, Nonmammalian metabolism, Embryonic Development physiology, Hematopoiesis physiology, Humans, Zebrafish embryology, Embryonic Stem Cells metabolism, Hematopoietic Stem Cells metabolism, Induced Pluripotent Stem Cells metabolism, Inflammasomes metabolism
- Abstract
Embryonic hematopoietic stem and progenitor cells (HSPCs) robustly proliferate while maintaining multilineage potential in vivo; however, an incomplete understanding of spatiotemporal cues governing their generation has impeded robust production from human induced pluripotent stem cells (iPSCs) in vitro. Using the zebrafish model, we demonstrate that NLRP3 inflammasome-mediated interleukin-1-beta (IL1β) signaling drives HSPC production in response to metabolic activity. Genetic induction of active IL1β or pharmacologic inflammasome stimulation increased HSPC number as assessed by in situ hybridization for runx1/cmyb and flow cytometry. Loss of inflammasome components, including il1b, reduced CD41
+ HSPCs and prevented their expansion in response to metabolic cues. Cell ablation studies indicated that macrophages were essential for initial inflammasome stimulation of Il1rl1+ HSPCs. Significantly, in human iPSC-derived hemogenic precursors, transient inflammasome stimulation increased multilineage hematopoietic colony-forming units and T cell progenitors. This work establishes the inflammasome as a conserved metabolic sensor that expands HSPC production in vivo and in vitro., Competing Interests: Declaration of Interests G.Q.D. holds equity in 28/7 Therapeutics and Epizyme, has received sponsored research support from Megakaryon (Japan), and holds patents pertaining to HSPC production from iPSCs., (Copyright © 2020 Elsevier Inc. All rights reserved.)- Published
- 2020
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15. Preparation and partial characterization of films made with dual-modified (acetylation and crosslinking) potato starch.
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González-Soto RA, Núñez-Santiago MC, and Bello-Pérez LA
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- Acetylation, Cross-Linking Reagents chemistry, Permeability, Solubility, Tensile Strength, X-Ray Diffraction, Biodegradable Plastics chemistry, Plant Extracts chemistry, Solanum tuberosum chemistry, Starch chemistry
- Abstract
Background: Starch is an alternative material for the production of biodegradable plastics; however, native starches have drawbacks due to their hydrophilic nature. Chemical modifications such as acetylation and crosslinking are used to broaden the potential end-uses of starch. Dual modification of starches increases their functionality compared to that of starches with similar single modifications. In this study, a dual-modified potato starch (acetylated and crosslinked) was used to produce films by casting., Results: Changes in the arrangement of the amylopectin double helices of dual-modified starch were evident from X-ray diffraction patterns, pasting profiles and thermal properties. The degree of substitution for acetyl groups was low (0.058 ± 0.006) because crosslinking dominated acetylation. Modified starch film had higher elongation percentage (82.81%) than its native counterpart (57.4%), but lower tensile strength (3.51 MPa for native and 2.17 MPa for dual-modified) and lower crystallinity in fresh and stored films. The sorption isotherms indicated that the dual modification decreased the number of reactive sites for binding water, resulting in a reduction in the monolayer value and a decrease in the solubility and water vapor permeability., Conclusions: Dual modification of starch may be a feasible option for improving the properties of biodegradable starch films. © 2018 Society of Chemical Industry., (© 2018 Society of Chemical Industry.)
- Published
- 2019
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16. Quantitative determination of ribosome nascent chain stability.
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Samelson AJ, Jensen MK, Soto RA, Cate JH, and Marqusee S
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- Escherichia coli metabolism, Methotrexate pharmacology, Peptide Hydrolases metabolism, Protein Biosynthesis drug effects, Protein Folding drug effects, Protein Stability drug effects, Proteolysis drug effects, Recombinant Proteins metabolism, Ribosomes drug effects, Spectrometry, Fluorescence, Urea pharmacology, Ribosomes metabolism
- Abstract
Accurate protein folding is essential for proper cellular and organismal function. In the cell, protein folding is carefully regulated; changes in folding homeostasis (proteostasis) can disrupt many cellular processes and have been implicated in various neurodegenerative diseases and other pathologies. For many proteins, the initial folding process begins during translation while the protein is still tethered to the ribosome; however, most biophysical studies of a protein's energy landscape are carried out in isolation under idealized, dilute conditions and may not accurately report on the energy landscape in vivo. Thus, the energy landscape of ribosome nascent chains and the effect of the tethered ribosome on nascent chain folding remain unclear. Here we have developed a general assay for quantitatively measuring the folding stability of ribosome nascent chains, and find that the ribosome exerts a destabilizing effect on the polypeptide chain. This destabilization decreases as a function of the distance away from the peptidyl transferase center. Thus, the ribosome may add an additional layer of robustness to the protein-folding process by avoiding the formation of stable partially folded states before the protein has completely emerged from the ribosome., Competing Interests: The authors declare no conflict of interest.
- Published
- 2016
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17. Morphometry of the Greater Palatal Canal in Adult Skulls.
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Soto RA, Cáceres F, and Vera C
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- Adult, Alveolar Process anatomy & histology, Cephalometry methods, Humans, Image Processing, Computer-Assisted methods, Palate anatomy & histology, Photography methods, Pterygopalatine Fossa anatomy & histology, Sphenoid Bone anatomy & histology, Palate, Hard anatomy & histology
- Abstract
The purpose of this study was to evaluate in dry skulls the length and angle between the greater palatine foramen and the foramen rotundum in both the frontal and sagittal planes. In 50 human skulls from the department of morphology, the distance and angulation required to reach the foramen rotundum through the greater palatine canal were measured in the frontal and sagittal planes. A stylet was introduced up to the foramen rotundum in each greater palatine canal and fixed. The skulls were then photographed from a front and lateral view (both right and left). Finally, the stylets were photographed on graph paper. These images were analyzed with Photoshop software. In the frontal plane, mean angulations of 5.32 degrees on the right side and 6.15 degrees on the left side were obtained. In the sagittal plane, mean angulations of 61.66 degrees on the right side and 61.81 degrees on the left side were obtained. Finally, the mean length required to reach the foramen rotundum was 31.95 mm on the right side and 32.49 mm on the left side. Some of these results differ from those stated in the foreign literature (10 degrees front, 70 degrees sagittal). These differences should be considered for both clinical practice and teaching in Chile.
- Published
- 2015
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18. Nanocomposites of rice and banana flours blend with montmorillonite: partial characterization.
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Rodríguez-Marín ML, Bello-Pérez LA, Yee-Madeira H, Zhong Q, and González-Soto RA
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- Permeability, Steam, Tensile Strength, X-Ray Diffraction, Bentonite chemistry, Flour, Musa chemistry, Nanocomposites chemistry, Oryza chemistry
- Abstract
Rice and banana flours are inexpensive starchy materials that can form films with more improved properties than those made with their starch because flour and starch present different hydrophobicity. Montmorillonite (MMT) can be used to further improve the properties of starch-based films, which has not received much research attention for starchy flours. The aim of this work was to evaluate the mechanical and barrier properties of nanocomposite films of banana and rice flours as matrix material with addition of MMT as a nanofiller. MMT was modified using citric acid to produce intercalated structures, as verified by the X-ray diffraction pattern. The intercalated MMT was blended with flour slurries, and films were prepared by casting. Nanocomposite films of banana and rice flours presented an increase in the tensile at break and elongation percentage, respectively, more than their respective control films without MMT. This study showed that banana and rice flours could be alternative raw materials to use in making nanocomposite films., (Copyright © 2013 Elsevier B.V. All rights reserved.)
- Published
- 2013
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19. [Yield of starch extraction from plantain (Musa paradisiaca). Pilot plant study].
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Flores-Gorosquera E, García-Suárez FJ, Flores-Huicochea E, Núñez-Santiago MC, González-Soto RA, and Bello-Pérez LA
- Subjects
- Humidity, Pilot Projects, Starch analysis, Food Technology methods, Musa, Starch isolation & purification
- Abstract
In México, the banana (Musa paradisiaca) is cooked (boiling or deep frying) before being eaten, but the consumption is not very popular and a big quantity of the product is lost after harvesting. The unripe plantain has a high level of starch and due to this the use of banana can be diversified as raw material for starch isolation. The objective of this work was to study the starch yield at pilot plant scale. Experiments at laboratory scale were carried out using the pulp with citric acid to 0,3 % (antioxidant), in order to evaluate the different unitary operations of the process. The starch yield, based on starch presence in the pulp that can be isolated, were between 76 and 86 %, and the values at pilot plant scale were between 63 and 71 %, in different lots of banana fruit. Starch yield values were similar among the diverse lots, showing that the process is reproducible. The lower values of starch recovery at pilot plant scale are due to the loss during sieving operations; however, the amount of starch recovery is good.
- Published
- 2004
20. [Strongyloidiasis in the immunologically compromised patient].
- Author
-
Quiñones Soto RA, Harrington PT, Gutiérrez Núñez JJ, Ramírez Ronda CH, and Bermúdez RH
- Subjects
- Animals, Humans, Lung Diseases, Parasitic etiology, Rats, Strongyloidiasis complications, Thiabendazole therapeutic use, Immunologic Deficiency Syndromes complications, Immunosuppression Therapy adverse effects, Strongyloidiasis immunology
- Published
- 1981
21. [Strongyloidiasis in the immunocompromised patient].
- Author
-
Quiñones Soto RA, Harrington PT, Gutiérrez Núñez JJ, Ramírez Ronda CH, and Bermúdez RH
- Subjects
- Humans, Immunosuppressive Agents adverse effects, Strongyloidiasis drug therapy, Thiabendazole therapeutic use, Immunologic Deficiency Syndromes complications, Strongyloidiasis complications
- Published
- 1980
22. Specific assessments of warm and cool sensitivities in adult diabetic patients.
- Author
-
Sosenko JM, Kato M, Soto RA, Gadia MT, and Ayyar DR
- Subjects
- Adult, Glycated Hemoglobin analysis, Hallux, Humans, Middle Aged, Reference Values, Skin Physiological Phenomena, Temperature, Diabetes Mellitus, Type 1 physiopathology, Diabetes Mellitus, Type 2 physiopathology, Skin physiopathology
- Abstract
We have specifically examined warm and cool sensitivities in 60 diabetic and 43 nondiabetic individuals. Diabetic patients tended to have less warm and cool sensitivity than the control subjects (P less than .001 for age less than 50 yr and P less than .05 for age greater than or equal to 50 yr). Both patients asymptomatic for neuropathy and patients with symptoms had impairment of warm and cool sensitivity (P less than .05 for comparisons with control subjects). These differences persisted (P less than .05) in covariance analyses with age included as a covariate. There was a nonlinear association between warm sensitivity and hemoglobin A1c. Warm-sensitivity values in the lowest and middle tertiles of the hemoglobin A1c distribution were similar; however, warm-sensitivity values of patients in the highest tertile were markedly increased (P less than .05 for the comparison of the highest tertile with the lowest and middle tertiles combined). There tended to be more warm insensitivity than cool insensitivity among the diabetic patients, and this difference increased with worsening glycemia. These data indicate that both warm and cool sensations are markedly impaired in asymptomatic adult diabetic patients. They also suggest that warm sensitivity is more impaired than cool sensitivity, and that this is the result of a stronger association between warm sensitivity and metabolic factors.
- Published
- 1988
- Full Text
- View/download PDF
23. [Vaccination: principles and practice in 1980. Review and concepts. I. Historical development, adverse effects, diphtheria, tetanus, and whooping cough, poliomyelitis, and measles].
- Author
-
Ramírez Ronda CH, Bermúdez RH, Pérez Pabón MJ, and Quiñones-Soto RA
- Subjects
- Diphtheria Toxoid adverse effects, History, 19th Century, History, 20th Century, Humans, Immunization Schedule, Measles Vaccine adverse effects, Pertussis Vaccine adverse effects, Poliovirus Vaccine, Inactivated adverse effects, Puerto Rico, Tetanus Toxoid adverse effects, Vaccination history, Vaccines adverse effects
- Published
- 1980
24. Comparative evaluation of three methods for measuring gentamicin in serum.
- Author
-
Nevárez-Padilla M, Vilaró C, Quiñones-Soto RA, Cruz A, and Ramírez-Ronda CH
- Subjects
- Humans, Reagent Kits, Diagnostic, Gentamicins blood, Immunoenzyme Techniques, Latex Fixation Tests, Radioimmunoassay
- Published
- 1984
25. Facilitation of muscle activity by contralateral homonymous muscle action in man.
- Author
-
Soto RA, Sanz OP, Sica RE, and Chorny D
- Subjects
- Adult, Electromyography, Female, Fingers, Humans, Male, Motor Neurons physiology, Muscle Contraction, Muscle, Smooth physiology
- Published
- 1974
26. Intracellular composition and homeostatic mechanisms in severe chronic infantile malnutrition. III. Renal adjustments.
- Author
-
GORDILLO G, SOTO RA, METCOFF J, LOPEZ E, and ANTILLON LG
- Subjects
- Child, Humans, Infant, Homeostasis, Infant Nutrition Disorders, Kidney physiology, Nutrition Disorders
- Published
- 1957
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