Institution
University of Costa Rica
Education•San José, Costa Rica•
About: University of Costa Rica is a education organization based out in San José, Costa Rica. It is known for research contribution in the topics: Population & Venom. The organization has 9817 authors who have published 16781 publications receiving 238208 citations. The organization is also known as: UCR & Universidad de Costa Rica.
Topics: Population, Venom, Antivenom, Snake venom, Myotoxin
Papers published on a yearly basis
Papers
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TL;DR: A novel missense mutation (Val to Leu) in exon 11, which codes for the transmembrane region of the neuregulin 1 protein is identified, which is associated with psychosis and schizophrenia in this population.
111 citations
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TL;DR: The degree of correlation between gene expression and protein levels varied among different cytokines/chemokines, and researchers should be cautious when using mRNA expression array results as a proxy for protein levels using existing technologies.
Abstract: Background: mRNA expression signatures are frequently used as surrogate measures of cellular function and pathway changes. Few studies have directly compared results obtained using gene expression and multiplex protein assays for corresponding gene products.
Methods: We used data available from a clinical trial of a human papillomavirus-16 vaccine that tracked gene expression and cytokine/chemokine production by peripheral blood mononuclear cells stimulated in culture with various antigens to evaluate the degree to which gene expression levels reflect observed levels of cytokines/chemokines. Twenty-six women enrolled in a phase II clinical trial of a human papillomavirus-16 vaccine were evaluated for gene expression (using the Affymetrix Human Genome Focus Array) and cytokine/chemokine levels (using a bead-based 22-plex cytokine assay developed by Linco Research, Inc.) before and after vaccination.
Results: Our results suggest the presence of a wide range of correlations between mRNA expression and secreted protein levels. The strongest correlation was observed for IFN-γ ( R = 0.90 overall levels; R = 0.69 when vaccine induced changes were evaluated). More modest overall correlations ranging from 0.40 to 0.80 were observed for MIP1A, IP10, TNF-α, MCP1, IL-2, GM-CSF, IL-5, RANTES, and IL-8. Weaker or no correlation was observed between gene expression and protein levels for the remaining cytokines/chemokines evaluated.
Conclusion: The degree of correlation between gene expression and protein levels varied among different cytokines/chemokines.
Impact: Researchers should be cautious when using mRNA expression array results as a proxy for protein levels using existing technologies. Cancer Epidemiol Biomarkers Prev; 19(4); 978–81. ©2010 AACR.
111 citations
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TL;DR: Although both effects probably depend on the toxins' ability to disturb membranes, it is likely that variation in complexity between skeletal muscle plasma membrane and liposome bilayers are the basis for this difference.
111 citations
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TL;DR: It is shown that NC10 bacteria are present and transcriptionally active in oceanic oxygen minimum zones (OMZs) off northern Mexico and Costa Rica, and a role for this group in OMZ nitrogen, methane and oxygen cycling is suggested.
Abstract: Bacteria of the NC10 phylum link anaerobic methane oxidation to nitrite denitrification through a unique O2-producing intra-aerobic methanotrophy pathway. A niche for NC10 in the pelagic ocean has not been confirmed. We show that NC10 bacteria are present and transcriptionally active in oceanic oxygen minimum zones (OMZs) off northern Mexico and Costa Rica. NC10 16S rRNA genes were detected at all sites, peaking in abundance in the anoxic zone with elevated nitrite and methane concentrations. Phylogenetic analysis of particulate methane monooxygenase genes further confirmed the presence of NC10. rRNA and mRNA transcripts assignable to NC10 peaked within the OMZ and included genes of the putative nitrite-dependent intra-aerobic pathway, with high representation of transcripts containing the unique motif structure of the nitric oxide (NO) reductase of NC10 bacteria, hypothesized to participate in O2-producing NO dismutation. These findings confirm pelagic OMZs as a niche for NC10, suggesting a role for this group in OMZ nitrogen, methane and oxygen cycling.
110 citations
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National Oceanic and Atmospheric Administration1, National Center for Atmospheric Research2, University of Costa Rica3, Duke University4, University of Maryland, College Park5, National Autonomous University of Mexico6, Colorado State University7, Creighton University8, University Corporation for Atmospheric Research9, University of New Mexico10, University of Washington11, University of Colorado Boulder12, University of Miami13
TL;DR: The North American Monsoon Experiment (NAME) as mentioned in this paper is an internationally coordinated process study aimed at determining the sources and limits of predictability of warm-season precipitation over North America, which is used to promote a better understanding and more realistic simulation of convective processes in complex terrain.
Abstract: The North American Monsoon Experiment (NAME) is an internationally coordinated process study aimed at determining the sources and limits of predictability of warm-season precipitation over North America. The scientific objectives of NAME are to promote a better understanding and more realistic simulation of warm-season convective processes in complex terrain, intraseasonal variability of the monsoon, and the response of the warm-season atmospheric circulation and precipitation patterns to slowly varying, potentially predictable surface boundary conditions. During the summer of 2004, the NAME community implemented an international (United States, Mexico, Central America), multiagency (NOAA, NASA, NSF, USDA) field experiment called NAME 2004. This article presents early results from the NAME 2004 campaign and describes how the NAME modeling community will leverage the NAME 2004 data to accelerate improvements in warm-season precipitation forecasts for North America.
110 citations
Authors
Showing all 9922 results
Name | H-index | Papers | Citations |
---|---|---|---|
Alberto Ascherio | 136 | 462 | 69578 |
Gervasio Gomez | 133 | 1844 | 99695 |
Myron M. Levine | 123 | 789 | 60865 |
Hong-Cai Zhou | 114 | 489 | 66320 |
Edward O. Wilson | 101 | 406 | 89994 |
Mary Claire King | 100 | 336 | 47454 |
Olga Martín-Belloso | 86 | 384 | 23428 |
José María Gutiérrez | 84 | 607 | 26779 |
Cesare Montecucco | 84 | 382 | 27738 |
Rodolphe Clérac | 78 | 506 | 22604 |
Kim R. Dunbar | 74 | 470 | 20262 |
Paul J. Hanson | 70 | 251 | 19504 |
Hannia Campos | 69 | 210 | 15164 |
Jean-Pierre Gorvel | 67 | 231 | 15005 |
F. Albert Cotton | 66 | 1023 | 27647 |