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Altamirano-Gutiérrez W, Molina-Botero IC, Fuentes-Navarro E, Arango J, Salazar-Cubillas K, Paucar R, Gómez-Bravo C. Bamboo forage in Peruvian Amazon: a potential feed for cattle. Trop Anim Health Prod 2023; 55:288. [PMID: 37578575 DOI: 10.1007/s11250-023-03703-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 07/19/2023] [Indexed: 08/15/2023]
Abstract
During the dry and rainy seasons of the Northeastern Zone of Peru, a chemical characterization of five species of bamboo prevalent in the area (Guadua lynnclarkiae, G. takahashiae, Bambusa vulgaris, G. weberbaueri, and Dendrocalamus asper) was conducted. Then, the effect of supplementing bamboo leaves (0, 20, and 40% inclusion of D. asper) on the intake and live weight gain of 18 Gyr × Holstein heifers was evaluated for 28 days. Among the species evaluated, D. asper has the greatest crude protein (CP) concentration (158-166 g/kg Dry matter- DM), post-ruminal CP supply (127 g/kg DM), and in vitro organic matter digestibility (444-456 g/kg DM) but similar concentrations of crude ash (124 g/kg DM), calcium (2.4-2.8 mg/g), phosphorus (0.7-2.1 mg/g), protein fractions A, B1, B2, B3, C (45, 5, 35, 56, and 17g/kg DM, respectively), rumen-undegraded CP (31% CP), neutral detergent fiber (NDF, 685g/kg DM), and acid detergent fiber (ADF, 357 g/kg DM) than the other species evaluated. Dry matter intake was higher in the control treatment and in the 20% bamboo leaf inclusion treatment than in the 40% bamboo inclusion treatment. Intake of CP and NDF decreased with the increase in bamboo inclusion. Despite the differences in DM, CP, and NDF intake, the live weight gain remained similar across treatments. However, there was a greater feed conversion in the 20% bamboo leaf inclusion treatment. During the dry season, bamboo leaves can be used as an alternative supplement at a maximum inclusion of 20% without affecting the live weight gain.
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Affiliation(s)
- W Altamirano-Gutiérrez
- Facultad de Zootecnia, Universidad Nacional Agraria La Molina, Av. La Molina s/n, La Molina, 15024, Lima, Peru
| | - I C Molina-Botero
- Facultad de Zootecnia, Universidad Nacional Agraria La Molina, Av. La Molina s/n, La Molina, 15024, Lima, Peru
| | - E Fuentes-Navarro
- Facultad de Zootecnia, Universidad Nacional Agraria La Molina, Av. La Molina s/n, La Molina, 15024, Lima, Peru
| | - J Arango
- Tropical Forages Program of the International Center for Tropical Agriculture (CIAT), Km 17, Palmira, 763022, Valle del Cauca, Colombia
| | - K Salazar-Cubillas
- Institute of Animal Nutrition and Physiology, Christian-Albrechts- Universität zu Kiel, Hermann-Rodewald-Straße 9, 24118, Kiel, Germany
| | - R Paucar
- International Bamboo and Rattan Organization - INBAR, Av. Centro de convenciones Campo Ferial, Junín, Satipo, Peru
| | - C Gómez-Bravo
- Facultad de Zootecnia, Universidad Nacional Agraria La Molina, Av. La Molina s/n, La Molina, 15024, Lima, Peru.
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Arango J, Aristizabal V, Vélez F, Carrasquilla J, Gomez J, Quijano J, Herrera-Ramirez J. Synthetic dataset of speckle images for fiber optic temperature sensor. Data Brief 2023; 48:109134. [PMID: 37122920 PMCID: PMC10139894 DOI: 10.1016/j.dib.2023.109134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 03/07/2023] [Accepted: 03/30/2023] [Indexed: 05/02/2023] Open
Abstract
The published data correspond to images of simulated specklegrams, which result from the calculation of the modal interference that occurs in a multimode optical fiber. These have a characteristic pattern due to the constructive or destructive interference between the light modes depending on their phase differences. The specklegram contains valuable information since the propagation of the modes varies according to the influence of some external disturbances, and therefore, the speckle pattern changes. This dataset contains specklegrams that vary according to the temperature. These data have been obtained by simulation using the finite element method (FEM) through the COMSOL multiphysics platform. In the simulation, the vector wave equation is solved, and the refractive index of the fiber is recalculated due to the temperature change. We simulated a 1490 nm wavelength laser, an optical fiber with a core diameter of 50 µm and cladding diameter of 125 µm. The dataset contains specklegrams covering the range of temperatures from 0°C to 120°C in 0.2°C steps.
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Affiliation(s)
- Juan Arango
- Instituto Tecnológico Metropolitano, Engineering Faculty, Medellín, Colombia
- Corresponding author.
| | - Victor Aristizabal
- Universidad Cooperativa de Colombia, Engineering Faculty, Medellín, Colombia. PhD Student EAFIT University
| | - Francisco Vélez
- Universidad Cooperativa de Colombia, Engineering Faculty, Medellín, Colombia. PhD Student EAFIT University
| | - Juan Carrasquilla
- Vector Institute, MaRS Centre, Toronto, ON M5G 1M1, Canada
- University of Waterloo, Department of Physics and Astronomy, ON N2L 3G1, Canada
| | - Jorge Gomez
- Politécnico Colombiano Jaime Isaza Cadavid, Basic Science Faculty, Medellín, Colombia
| | - Jairo Quijano
- Politécnico Colombiano Jaime Isaza Cadavid, Basic Science Faculty, Medellín, Colombia
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Higgins J, Tomaszewska P, Pellny TK, Castiblanco V, Arango J, Tohme J, Schwarzacher T, Mitchell RA, Heslop-Harrison JS, De Vega JJ. Diverged subpopulations in tropical Urochloa (Brachiaria) forage species indicate a role for facultative apomixis and varying ploidy in their population structure and evolution. Ann Bot 2022; 130:657-669. [PMID: 36112370 PMCID: PMC9670755 DOI: 10.1093/aob/mcac115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 09/13/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Urochloa (syn. Brachiaria) is a genus of tropical grasses sown as forage feedstock, particularly in marginal soils. Here we aimed to clarify the genetic diversity and population structure in Urochloa species to understand better how population evolution relates to ploidy level and occurrence of apomictic reproduction. METHODS We explored the genetic diversity of 111 accessions from the five Urochloa species used to develop commercial cultivars. These accessions were conserved from wild materials collected at their centre of origin in Africa, and they tentatively represent the complete Urochloa gene pool used in breeding programmes. We used RNA-sequencing to generate 1.1 million single nucleotide polymorphism loci. We employed genetic admixture, principal component and phylogenetic analyses to define subpopulations. RESULTS We observed three highly differentiated subpopulations in U. brizantha, which were unrelated to ploidy: one intermixed with U. decumbens, and two diverged from the former and the other species in the complex. We also observed two subpopulations in U. humidicola, unrelated to ploidy; one subpopulation had fewer accessions but included the only characterized sexual accession in the species. Our results also supported a division of U. decumbens between diploids and polyploids, and no subpopulations within U. ruziziensis and U. maxima. CONCLUSIONS Polyploid U. decumbens are more closely related to polyploid U. brizantha than to diploid U. decumbens, which supports the divergence of both polyploid groups from a common tetraploid ancestor and provides evidence for the hybridization barrier of ploidy. The three differentiated subpopulations of apomictic polyploid U. brizantha accessions constitute diverged ecotypes, which can probably be utilized in hybrid breeding. Subpopulations were not observed in non-apomictic U. ruziziensis. Sexual Urochloa polyploids were not found (U. brizantha, U. decumbens) or were limited to small subpopulations (U. humidicola). The subpopulation structure observed in the Urochloa sexual-apomictic multiploidy complexes supports geographical parthenogenesis, where the polyploid genotypes exploit the evolutionary advantage of apomixis, i.e. uniparental reproduction and clonality, to occupy extensive geographical areas.
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Affiliation(s)
- J Higgins
- Earlham Institute, Norwich Research Park, Norwich NR4 7UZ, UK
| | - P Tomaszewska
- Department of Genetics and Genome Biology, University of Leicester, Leicester LE1 7RH, UK
- Department of Genetics and Cell Physiology, Faculty of Biological Sciences, University of Wroclaw, 50-328 Wroclaw, Poland
| | - T K Pellny
- Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, UK
| | - V Castiblanco
- International Center for Tropical Agriculture (CIAT), 6713 Cali, Colombia
| | - J Arango
- International Center for Tropical Agriculture (CIAT), 6713 Cali, Colombia
| | - J Tohme
- International Center for Tropical Agriculture (CIAT), 6713 Cali, Colombia
| | - T Schwarzacher
- Department of Genetics and Genome Biology, University of Leicester, Leicester LE1 7RH, UK
| | - R A Mitchell
- Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, UK
| | - J S Heslop-Harrison
- Department of Genetics and Genome Biology, University of Leicester, Leicester LE1 7RH, UK
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial, Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
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Castro F, Chai L, Arango J, Owens C, Smith P, Reichelt S, DuBois C, Menconi A. Poultry industry paradigms: connecting the dots. J APPL POULTRY RES 2022. [DOI: 10.1016/j.japr.2022.100310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Lugo-Arias J, Lugo-Arias E, Ovallos-Gazabon D, Arango J, de la Puente M, Silva J. Effectiveness of the mixture of nopal and cassava starch as clarifying substances in water purification: A case study in Colombia. Heliyon 2020; 6:e04296. [PMID: 32637691 PMCID: PMC7327736 DOI: 10.1016/j.heliyon.2020.e04296] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 02/16/2020] [Accepted: 06/22/2020] [Indexed: 11/29/2022] Open
Abstract
Aluminum sulfate is one of the most used chemical coagulants in the world, but research has shown that high concentrations of aluminum in the body are associated with neuropathological conditions. Because of this, different alternatives have been evaluated such as natural coagulants, which are considered safe for human health and contain fewer contaminants than chemicals due to their biodegradation properties. The main objective of this study was to evaluate the efficiency of mixing nopal mucilage and cassava starch for turbidity removal in water purification. In this paper, test jars and the treatment equipment (TA-scale FQ-005/PE manufactured by Generatoris SA de CV of Mexico) was applied in order to measure turbidity and pH parameters before and after the process of coagulation–flocculation, which was applied to water from the Magdalena River in Colombia. Samples from two sampling periods were assessed. One was evaluated during the rainy season and the other was evaluated without precipitation (drought) with initial turbidities of 316 NTU and 80 NTU, respectively. It was found that aluminum sulfate as a coagulant reference obtained better turbidity removal results (up to 99%) as compared to nopal (up to 60.4%), and nopal–starch combination of cassava (up to 67%), indicating that this mixture increases the effectiveness of natural coagulants used individually. Our results indicate that this should be considered as an alternative in the water purification process.
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Affiliation(s)
| | | | | | | | | | - Jesús Silva
- Universidad Peruana de Ciencias Aplicadas, Perú
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Wolc A, Drobik-Czwarno W, Jankowski T, Arango J, Settar P, Fulton JE, Fernando RL, Garrick DJ, Dekkers JCM. Accuracy of genomic prediction of shell quality in a White Leghorn line. Poult Sci 2020; 99:2833-2840. [PMID: 32475416 PMCID: PMC7597664 DOI: 10.1016/j.psj.2020.01.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 01/13/2020] [Accepted: 01/20/2020] [Indexed: 11/16/2022] Open
Abstract
Several genomic methods were applied for predicting shell quality traits recorded at 4 different hen ages in a White Leghorn line. The accuracies of genomic prediction of single-step GBLUP and single-trait Bayes B were compared with predictions of breeding values based on pedigree-BLUP under single-trait or multitrait models. Breaking strength (BS) and dynamic stiffness (Kdyn) measurements were collected on 18,524 birds from 3 consecutive generations, of which 4,164 animals also had genotypes from an Affymetrix 50K panel containing 49,591 SNPs after quality control edits. All traits had low to moderate heritability, ranging from 0.17 for BS to 0.34 for Kdyn. The highest accuracies of prediction were obtained for the multitrait single-step model. The use of marker information resulted in higher prediction accuracies than pedigree-based models for almost all traits. A genome-wide association study based on a Bayes B model was conducted to detect regions explaining the largest proportion of genetic variance. Across all 8 shell quality traits analyzed, 7 regions each explaining over 2% of genetic variance and 54 regions each explaining over 1% of genetic variance were identified. The windows explaining a large proportion of genetic variance overlapped with several potential candidate genes with biological functions linked to shell formation. A multitrait repeatability model using a single-step method is recommended for genomic evaluation of shell quality in layer chickens.
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Affiliation(s)
- A Wolc
- Department of Animal Sciences, Iowa State University, Ames, IA 50011-1178, USA; Hy-Line International, Dallas Center, IA 50063, USA.
| | - W Drobik-Czwarno
- Department of Animal Genetics and Conservation, Institute of Animal Science, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
| | | | - J Arango
- Hy-Line International, Dallas Center, IA 50063, USA
| | - P Settar
- Hy-Line International, Dallas Center, IA 50063, USA
| | - J E Fulton
- Hy-Line International, Dallas Center, IA 50063, USA
| | - R L Fernando
- Department of Animal Sciences, Iowa State University, Ames, IA 50011-1178, USA
| | - D J Garrick
- Department of Animal Sciences, Iowa State University, Ames, IA 50011-1178, USA
| | - J C M Dekkers
- Department of Animal Sciences, Iowa State University, Ames, IA 50011-1178, USA
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Horrocks CA, Arango J, Arevalo A, Nuñez J, Cardoso JA, Dungait JAJ. Smart forage selection could significantly improve soil health in the tropics. Sci Total Environ 2019; 688:609-621. [PMID: 31254827 PMCID: PMC6708042 DOI: 10.1016/j.scitotenv.2019.06.152] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 06/10/2019] [Accepted: 06/10/2019] [Indexed: 06/09/2023]
Abstract
The use of tropical grasslands to graze livestock is of high economic importance. Declining grassland soil health leads to reduced sustainability of livestock systems. There are high levels of phenotypic diversity amongst tropical forage grasses. We hypothesise that this variation could lead to significant differences in soil health and that selection of forage cultivars to improve soil health could improve the sustainability of livestock production. We measured and compared key soil health metrics (soil organic carbon (SOC) concentration and sugar / alkane composition, aggregate stability, friability, litter decomposition rates, microbial community composition) under four tropical forage varieties (Brachiaria hybrid cv Mulato (BhMulato), B. humidicola cv Tully (CIAT679; Bh679), B. humidicola cv CIAT16888 (Bh16888), and Panicum maximum CIAT 6962 (Pmax)) and a bare soil control, there was a significant difference in soil aggregate stability, friability and SOC concentration between the forage varieties with soil under Bh679 and Bh16888 tending to have greater aggregate stability, friability and SOC concentrations compared to the soil under BhMulato and Pmax. We identified significant spatial variation in soils under BhMulato and Pmax due to their tussock forming growth habit; when compared to soil from adjacent to the tussocks, soil from the gaps between tussocks had significantly reduced aggregate stability under both species, significantly reduced friability under Pmax and significantly reduced SOC under BhMulato. We found limited impact of forage variety on soil microbial community composition, litter decomposition rates or soil alkane and sugar concentrations.
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Affiliation(s)
- C A Horrocks
- Department of Sustainable Soil and Grassland Systems, Rothamsted Research, North Wyke, Okehampton, Devon EX20 2SB, UK.
| | - J Arango
- International Center for Tropical agriculture (CIAT), Km 17, Recta Cali-Palmira, CP 763537, Apartado Aéreo 6713, Cali, Colombia
| | - A Arevalo
- International Center for Tropical agriculture (CIAT), Km 17, Recta Cali-Palmira, CP 763537, Apartado Aéreo 6713, Cali, Colombia
| | - J Nuñez
- International Center for Tropical agriculture (CIAT), Km 17, Recta Cali-Palmira, CP 763537, Apartado Aéreo 6713, Cali, Colombia
| | - J A Cardoso
- International Center for Tropical agriculture (CIAT), Km 17, Recta Cali-Palmira, CP 763537, Apartado Aéreo 6713, Cali, Colombia
| | - J A J Dungait
- Department of Sustainable Soil and Grassland Systems, Rothamsted Research, North Wyke, Okehampton, Devon EX20 2SB, UK
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Wolc A, Jankowski T, Arango J, Settar P, Fulton JE, O'Sullivan NP, Dekkers JCM. Investigating the genetic determination of clutch traits in laying hens. Poult Sci 2019; 98:39-45. [PMID: 30101314 DOI: 10.3382/ps/pey354] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 08/02/2018] [Indexed: 11/20/2022] Open
Abstract
Clutch traits were proposed as a more detailed description of egg-laying patterns than simple total egg production. In this study, egg production of 23,809 Rhode Island Red (RIR) and 22,210 White Leghorn (WL) hens was described in terms of number of clutches, average and maximum clutch size, age at first egg, total saleable egg production, and percentage of egg defects. Genetic parameters were estimated using a six-trait animal model. Of the phenotyped birds, 1433 RIR hens and 1515 WL hens were genotyped with line specific 50K Affymetrix Axiom single nucleotide polymorphism chips to perform genome-wide association analyses. Moderate heritabilities were estimated for clutch traits of 0.20 to 0.42 in the RIR line and 0.29 to 0.41 in the WL line. Average and maximum clutch size was positively genetically correlated with total saleable egg number in both lines. Genome-wide association analysis identified seven regions that were associated with egg production in the RIR line and 12 regions in the WL line. The regions identified were line and trait specific, except for one region on chromosome 6 from 28 to 29 Mb that influenced number of clutches and maximum and average clutch size in WL hens. Regions associated with egg production identified here overlapped with 260 genes, with some strong positional candidates based on gene ontology including WASH1, which is involved in oocyte maturation, NPVF, involved in regulation of follicle-stimulating hormone secretion, and FOXO3, involved in oocyte maturation and ovulation from the ovarian follicle. Confirmation of the role of these genes in regulation of egg production pattern will require further studies.
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Affiliation(s)
- A Wolc
- Department of Animal Science, Iowa State University, Ames, IA 50011-3150, USA.,Hy-Line International, Dallas Center, IA 50063, USA
| | | | - J Arango
- Hy-Line International, Dallas Center, IA 50063, USA
| | - P Settar
- Hy-Line International, Dallas Center, IA 50063, USA
| | - J E Fulton
- Hy-Line International, Dallas Center, IA 50063, USA
| | | | - J C M Dekkers
- Department of Animal Science, Iowa State University, Ames, IA 50011-3150, USA
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Wolc A, Arango J, Settar P, Fulton J, O’Sullivan N, Dekkers J. Genome wide association study for heat stress induced mortality in a white egg layer line. Poult Sci 2019; 98:92-96. [DOI: 10.3382/ps/pey403] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 08/08/2018] [Indexed: 11/20/2022] Open
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Tuiskula-Haavisto M, Honkatukia M, Dunn IC, Bain MM, De Koning DJ, Preisinger R, Schmutz M, Arango J, Fischer D, Vilkki J. Validated quantitative trait loci for eggshell quality in experimental and commercial laying hens. Anim Genet 2018; 49:329-333. [PMID: 29797511 DOI: 10.1111/age.12671] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/08/2018] [Indexed: 01/07/2023]
Abstract
Compromised eggshell quality causes considerable economic losses for the egg industry. Breeding for improved eggshell quality has been very challenging. Eggshell quality is a trait that would greatly benefit from marker-assisted selection, which would allow the selection of sires for their direct contribution to the trait and would also allow implementation of measurements integrating a number of shell parameters that are difficult to measure. In this study, we selected the most promising autosomal quantitative trait loci (QTL) affecting eggshell quality on chromosomes 2, 3, 6 and 14 from earlier experiments and we extended the F2 population to include 1599 F2 females. The study was repeated on two commercial populations: Lohmann Tierzucht Rhode Island Red line (n = 692 females) and a Hy-Line White Plymouth Rock line (n = 290 progeny tested males). We analyzed the selected autosomal QTL regions on the three populations with SNP markers at 4-13 SNPs/Mb density. QTL for eggshell quality were replicated on all studied regions in the F2 population. New QTL were detected for eggshell color on chromosomes 3 and 6. Marker associations with eggshell quality traits were validated in the tested commercial lines on chromosomes 2, 3 and 6, thus paving the way for marker-assisted selection for improved eggshell quality.
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Affiliation(s)
- M Tuiskula-Haavisto
- Natural Resources Institute Finland (Luke), Production Systems, FI-31600, Jokioinen, Finland
| | - M Honkatukia
- Natural Resources Institute Finland (Luke), Production Systems, FI-31600, Jokioinen, Finland
| | - I C Dunn
- Avian Biology the Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK
| | - M M Bain
- College of Medical, Veterinary and Life Sciences (MVLS), IBAHCM, University of Glasgow, University Avenue, Glasgow G128QQ, UK
| | - D J De Koning
- Swedish University of Agricultural Sciences, Almas Allé 8, 75507, Uppsala, Sweden
| | - R Preisinger
- Lohmann Tierzucht GmbH, Am Seedeich 9-11, 27472, Cuxhaven, Germany
| | - M Schmutz
- Lohmann Tierzucht GmbH, Am Seedeich 9-11, 27472, Cuxhaven, Germany
| | - J Arango
- Hy-Line International, PO Box 310, Dallas Center, IA, 50063, USA
| | - D Fischer
- Natural Resources Institute Finland (Luke), Production Systems, FI-31600, Jokioinen, Finland
| | - J Vilkki
- Natural Resources Institute Finland (Luke), Production Systems, FI-31600, Jokioinen, Finland
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Castaño Y, Arango J, Navarro A. Spatiotemporal Gait Variables Using Wavelets for an Objective Analysis of Parkinson Disease. Stud Health Technol Inform 2018; 249:173-178. [PMID: 29866976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Parkinson's disease generates a special interest in factors such as gait patterns, posture patterns, and risk of falls. The human gait pattern has a basic unit called the gait cycle, composed of two phases: stance and swing. Using gait analysis it is possible to get spatiotemporal variables as walking speed and step number derived from stance and swing phases. In this paper, we explore the feasibility of wavelet techniques to analyze gait signals, we use a member of Daubechies family to distinguish automatically gait phases, this approach allowed us to estimate spatiotemporal variables that shows significant differences between Parkinson patients and non-Parkinson patients, this result aims to allow clinical experts to easily diagnose and assess Parkinson patients, with short evaluation times and with non-invasive technologies.
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Affiliation(s)
- Yor Castaño
- i2t Research Team, Universidad Icesi, Cali, Colombia
| | - Juan Arango
- i2t Research Team, Universidad Icesi, Cali, Colombia
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Jaffey JA, Graham A, VanEerde E, Hostnik E, Alvarez W, Arango J, Jacobs C, DeClue AE. Gallbladder Mucocele: Variables Associated with Outcome and the Utility of Ultrasonography to Identify Gallbladder Rupture in 219 Dogs (2007-2016). J Vet Intern Med 2017; 32:195-200. [PMID: 29205503 PMCID: PMC5787181 DOI: 10.1111/jvim.14898] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Revised: 11/08/2017] [Accepted: 11/15/2017] [Indexed: 11/27/2022] Open
Abstract
Background Gallbladder mucocele (GBM) is an increasingly recognized extrahepatic biliary disease in dogs. Objectives To investigate cases of GBM and identify variables associated with survival and the sensitivity and specificity of ultrasonography to identify gallbladder rupture. Animals Two hundred and nineteen client‐owned dogs with GBM. Methods Multicenter, retrospective study of dogs with GBM, presented from January 2007 to November 2016 to 6 academic veterinary hospitals in the United States. Interrogation of hospital databases identified all cases with the inclusion criteria of a gross and histopathologic diagnosis of GBM after cholecystectomy and intraoperative bacteriologic cultures of at least 1 of the following: gallbladder wall, gallbladder contents, or abdominal effusion. Results Two hundred and nineteen dogs fulfilled the inclusion criteria. Dogs with GBM and gallbladder rupture with bile peritonitis at the time of surgery were 2.7 times more likely to die than dogs without gallbladder rupture and bile peritonitis (P = 0.001; 95% confidence interval [CI], 1.50–4.68; n = 41). No significant associations were identified between survival and positive bacteriologic cultures, antibiotic administration, or time (days) from ultrasonographic identification of GBM to the time of surgery. The sensitivity, specificity, positive, and negative likelihood ratios for ultrasonographic identification of gallbladder rupture were 56.1% (95% CI, 39.9–71.2), 91.7% (95% CI, 85.3–95.6), 6.74, and 0.44, respectively. Conclusion and Clinical Importance Dogs in our study with GBM and intraoperative evidence of gallbladder rupture and bile peritonitis had a significantly higher risk of death. Additionally, abdominal ultrasonography had low sensitivity for identification of gallbladder rupture.
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Affiliation(s)
- J A Jaffey
- Department of Veterinary Medicine and Surgery, Veterinary Health Center, University of Missouri, Columbia, MO
| | - A Graham
- Department of Veterinary Medicine and Surgery, Veterinary Health Center, University of Missouri, Columbia, MO
| | - E VanEerde
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA
| | - E Hostnik
- Department of Veterinary Clinical Sciences, Veterinary Medical Center, Ohio State University, Columbus, OH
| | - W Alvarez
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL
| | - J Arango
- Department of Veterinary Clinical Sciences, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK
| | - C Jacobs
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA
| | - A E DeClue
- Department of Veterinary Medicine and Surgery, Veterinary Health Center, University of Missouri, Columbia, MO
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Subbarao GV, Arango J, Masahiro K, Hooper AM, Yoshihashi T, Ando Y, Nakahara K, Deshpande S, Ortiz-Monasterio I, Ishitani M, Peters M, Chirinda N, Wollenberg L, Lata JC, Gerard B, Tobita S, Rao IM, Braun HJ, Kommerell V, Tohme J, Iwanaga M. Genetic mitigation strategies to tackle agricultural GHG emissions: The case for biological nitrification inhibition technology. Plant Sci 2017; 262:165-168. [PMID: 28716411 DOI: 10.1016/j.plantsci.2017.05.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 05/01/2017] [Indexed: 05/16/2023]
Abstract
Accelerated soil-nitrifier activity and rapid nitrification are the cause of declining nitrogen-use efficiency (NUE) and enhanced nitrous oxide (N2O) emissions from farming. Biological nitrification inhibition (BNI) is the ability of certain plant roots to suppress soil-nitrifier activity, through production and release of nitrification inhibitors. The power of phytochemicals with BNI-function needs to be harnessed to control soil-nitrifier activity and improve nitrogen-cycling in agricultural systems. Transformative biological technologies designed for genetic mitigation are needed, so that BNI-enabled crop-livestock and cropping systems can rein in soil-nitrifier activity, to help reduce greenhouse gas (GHG) emissions and globally make farming nitrogen efficient and less harmful to environment. This will reinforce the adaptation or mitigation impact of other climate-smart agriculture technologies.
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Affiliation(s)
- G V Subbarao
- Japan International Research Center for Agricultural Sciences (JIRCAS), 1-1 Ohwashi, Tsukuba, Ibaraki 305-8686, Japan.
| | - J Arango
- International Center for Tropical Agriculture (CIAT), A.A. 6713, Cali, Colombia
| | - K Masahiro
- International Maize and Wheat Improvement Center (CIMMYT), Mexico-Veracruz, Elbatan, Texcoco CP 56237, Edo.de Mexico, Mexico
| | - A M Hooper
- Rothamsted Research, Harpenden, AL5 2JO, UK
| | - T Yoshihashi
- Japan International Research Center for Agricultural Sciences (JIRCAS), 1-1 Ohwashi, Tsukuba, Ibaraki 305-8686, Japan
| | - Y Ando
- Japan International Research Center for Agricultural Sciences (JIRCAS), 1-1 Ohwashi, Tsukuba, Ibaraki 305-8686, Japan
| | - K Nakahara
- Japan International Research Center for Agricultural Sciences (JIRCAS), 1-1 Ohwashi, Tsukuba, Ibaraki 305-8686, Japan
| | - S Deshpande
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, Telangana, India
| | - I Ortiz-Monasterio
- International Maize and Wheat Improvement Center (CIMMYT), Mexico-Veracruz, Elbatan, Texcoco CP 56237, Edo.de Mexico, Mexico
| | - M Ishitani
- International Center for Tropical Agriculture (CIAT), A.A. 6713, Cali, Colombia
| | - M Peters
- International Center for Tropical Agriculture (CIAT), A.A. 6713, Cali, Colombia
| | - N Chirinda
- International Center for Tropical Agriculture (CIAT), A.A. 6713, Cali, Colombia
| | - L Wollenberg
- CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS), University of Vermont, Burlington, VT 05405, USA
| | - J C Lata
- Sorbonne Universites, UPMC Univ. Paris 06, IRD, CNRS, INRA, UPEC, Univ. Paris Diderot, Institute of Ecology and Environmental Sciences, iEES Paris, 4 place Jussieu, 75005 Paris, France
| | - B Gerard
- International Maize and Wheat Improvement Center (CIMMYT), Mexico-Veracruz, Elbatan, Texcoco CP 56237, Edo.de Mexico, Mexico
| | - S Tobita
- Japan International Research Center for Agricultural Sciences (JIRCAS), 1-1 Ohwashi, Tsukuba, Ibaraki 305-8686, Japan
| | - I M Rao
- International Center for Tropical Agriculture (CIAT), A.A. 6713, Cali, Colombia
| | - H J Braun
- International Maize and Wheat Improvement Center (CIMMYT), Mexico-Veracruz, Elbatan, Texcoco CP 56237, Edo.de Mexico, Mexico
| | - V Kommerell
- International Maize and Wheat Improvement Center (CIMMYT), Mexico-Veracruz, Elbatan, Texcoco CP 56237, Edo.de Mexico, Mexico
| | - J Tohme
- International Center for Tropical Agriculture (CIAT), A.A. 6713, Cali, Colombia
| | - M Iwanaga
- Japan International Research Center for Agricultural Sciences (JIRCAS), 1-1 Ohwashi, Tsukuba, Ibaraki 305-8686, Japan
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Wolc A, Arango J, Settar P, O'Sullivan NP, Dekkers JCM. Repeatability vs. multiple-trait models to evaluate shell dynamic stiffness for layer chickens. J Anim Sci 2017; 95:9-15. [PMID: 28177371 DOI: 10.2527/jas.2016.0618] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Shell quality is one of the most important traits for improvement in layer chickens. Proper consideration of repeated records can increase the accuracy of estimated breeding values and thus genetic improvement of shell quality. The objective of this study was to compare different models for genetic evaluation of the collected data. For this study, 81,646 dynamic stiffness records on 21,321 brown egg layers and 93,748 records on 24,678 white egg layers from 4 generations were analyzed. Across generations, data were collected at 2 to 4 ages (at approximately 26, 42, 65, and 86 wk), with repeated records at each age. Seven models were compared, including 5 repeatability models with increasing complexity, a random regression model, and a multitrait model. The models were compared using Akaike Information Criteria with significance testing of nested models with a Log Likelihood Ratio test. Estimates of heritability were 0.31-0.36 for the brown line and 0.23-0.26 for the white line, but repeatability was higher for the model with age-specific permanent environment effects (0.59 for both lines) than for the model with an overall permanent environmental effects (0.47 for the brown and 0.41 for the white line). The model that allowed for permanent environmental effect within age and heterogeneous residual variance between ages resulted in improved fit compared to the traditional model that fits single permanent environment and residual effects, but was inferior in fit and predictive ability to the full multiple-trait model. The random regression model had better fit to the data than repeatability models but slightly worse than the multiple-trait model. For traits with repeated records at different ages, repeatability within and across ages as well as genetic correlations should be considered while choosing the number of records collected per individual as well as the model for genetic evaluation.
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Arango J, Wolc A, Settar P, O'Sullivan N. Model comparison to evaluate a shell quality bio-complex in layer hens. Poult Sci 2016; 95:2520-2527. [DOI: 10.3382/ps/pew286] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/06/2016] [Indexed: 11/20/2022] Open
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Heidaritabar M, Wolc A, Arango J, Zeng J, Settar P, Fulton J, O'Sullivan N, Bastiaansen J, Fernando R, Garrick D, Dekkers J. Impact of fitting dominance and additive effects on accuracy of genomic prediction of breeding values in layers. J Anim Breed Genet 2016; 133:334-46. [DOI: 10.1111/jbg.12225] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 05/14/2016] [Indexed: 02/06/2023]
Affiliation(s)
- M. Heidaritabar
- Department of Animal Science Iowa State University Ames IA USA
- Animal Breeding and Genomics Center Wageningen University Wageningen the Netherlands
| | - A. Wolc
- Department of Animal Science Iowa State University Ames IA USA
- Hy‐Line International Dallas Center IA USA
| | - J. Arango
- Hy‐Line International Dallas Center IA USA
| | - J. Zeng
- Department of Animal Science Iowa State University Ames IA USA
| | - P. Settar
- Hy‐Line International Dallas Center IA USA
| | | | | | - J.W.M. Bastiaansen
- Animal Breeding and Genomics Center Wageningen University Wageningen the Netherlands
| | - R.L. Fernando
- Department of Animal Science Iowa State University Ames IA USA
| | - D.J. Garrick
- Department of Animal Science Iowa State University Ames IA USA
| | - J.C.M. Dekkers
- Department of Animal Science Iowa State University Ames IA USA
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Wolc A, Kranis A, Arango J, Settar P, Fulton J, O'Sullivan N, Avendano A, Watson K, Hickey J, de los Campos G, Fernando R, Garrick D, Dekkers J. Implementation of genomic selection in the poultry industry. Anim Front 2016. [DOI: 10.2527/af.2016-0004] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Affiliation(s)
- A. Wolc
- Department of Animal Science, Iowa State University, Ames, IA, USA
- Hy-Line International, Dallas Center, IA, USA
| | - A. Kranis
- Aviagen Limited, Newbridge, Midlothian, UK
- The Roslin Institute, R(D)SVS, University of Edinburgh, Edinburgh, Midlothian, UK
| | - J. Arango
- Hy-Line International, Dallas Center, IA, USA
| | - P. Settar
- Hy-Line International, Dallas Center, IA, USA
| | - J.E. Fulton
- Hy-Line International, Dallas Center, IA, USA
| | | | | | | | - J.M. Hickey
- The Roslin Institute, R(D)SVS, University of Edinburgh, Edinburgh, Midlothian, UK
| | - G. de los Campos
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI, USA
| | - R.L. Fernando
- Department of Animal Science, Iowa State University, Ames, IA, USA
| | - D.J. Garrick
- Department of Animal Science, Iowa State University, Ames, IA, USA
| | - J.C.M. Dekkers
- Department of Animal Science, Iowa State University, Ames, IA, USA
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Schaal TP, Arango J, Wolc A, Brady JV, Fulton JE, Rubinoff I, Ehr IJ, Persia ME, O'Sullivan NP. Commercial Hy-Line W-36 pullet and laying hen venous blood gas and chemistry profiles utilizing the portable i-STAT®1 analyzer. Poult Sci 2015; 95:466-71. [PMID: 26706355 PMCID: PMC4957505 DOI: 10.3382/ps/pev350] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 10/22/2015] [Indexed: 11/28/2022] Open
Abstract
Venous blood gas and chemistry reference ranges were determined for commercial Hy-Line W-36 pullets and laying hens utilizing the portable i-STAT®1 analyzer and CG8+ cartridges. A total of 632 samples were analyzed from birds between 4 and 110 wk of age. Reference ranges were established for pullets (4 to 15 wk), first cycle laying hens (20 to 68 wk), and second cycle (post molt) laying hens (70 to 110 wk) for the following traits: sodium (Na mmol/L), potassium (K mmol/L), ionized calcium (iCa mmol/L), glucose (Glu mg/dl), hematocrit (Hct% Packed Cell Volume [PCV]), pH, partial pressure carbon dioxide (PCO2 mm Hg), partial pressure oxygen (PO2 mm Hg), total concentration carbon dioxide (TCO2 mmol/L), bicarbonate (HCO3 mmol/L), base excess (BE mmol/L), oxygen saturation (sO2%), and hemoglobin (Hb g/dl). Data were analyzed using ANOVA to investigate the effect of production status as categorized by bird age. Trait relationships were evaluated by linear correlation and their spectral decomposition. All traits differed significantly among pullets and mature laying hens in both first and second lay cycles. Levels for K, iCa, Hct, pH, TCO2, HCO3, BE, sO2, and Hb differed significantly between first cycle and second cycle laying hens. Many venous blood gas and chemistry parameters were significantly correlated. The first 3 eigenvalues explained ∼2/3 of total variation. The first 2 principal components (PC) explained 51% of the total variation and indicated acid-balance and relationship between blood O2 and CO2. The third PC explained 16% of variation and seems to be related to blood iCa. Establishing reference ranges for pullet and laying hen blood gas and chemistry with the i-STAT®1 handheld unit provides a mechanism to further investigate pullet and layer physiology, evaluate metabolic disturbances, and may potentially serve as a means to select breeder candidates with optimal blood gas or chemistry levels on-farm.
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Affiliation(s)
- T P Schaal
- Hy-Line International, PO Box 310, Dallas Center, IA 50063
| | - J Arango
- Hy-Line International, PO Box 310, Dallas Center, IA 50063
| | - A Wolc
- Hy-Line International, PO Box 310, Dallas Center, IA 50063 Iowa State University, Department of Animal Science, Kildee Hall, Ames, IA 50011
| | - J V Brady
- Oregon State University, Department of Comparative Health Services, Veterinary Biomedical Sciences, Magruder Hall, Corvallis, OR 97331
| | - J E Fulton
- Hy-Line International, PO Box 310, Dallas Center, IA 50063
| | - I Rubinoff
- Hy-Line International, PO Box 310, Dallas Center, IA 50063
| | - I J Ehr
- Iowa State University, Department of Animal Science, Kildee Hall, Ames, IA 50011
| | - M E Persia
- Iowa State University, Department of Animal Science, Kildee Hall, Ames, IA 50011 Virginia Polytechnic Institute and State University, Department of Animal and Poultry Sciences, Litton Reaves Hall, Blacksburg, VA 24061
| | - N P O'Sullivan
- Hy-Line International, PO Box 310, Dallas Center, IA 50063
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Vicente BS, Nieto J, Arbide N, Perez-Hoyos M, Arrazubi V, Arevalo A, Arango J, Zumarraga A, Fernandez S, Sala M, Galve E, Novas P, Sande L, Abad T, Prado PMD. 2147 Pathological response as a prognostic factor for disease free survival on colorectal cancer with liver limited disease. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31068-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Novas P, Galve E, Fernández S, Sala MÁ, Arévalo A, Arango J, López de San Vicente B, Fernández S, Zumárraga A, Martínez del Prado P. Abstract P5-02-12: Concordance between semiquantitative immunohistochemical assay and oncotype DX RT-PCR assay for estrogen and progesterone receptors. Cancer Res 2015. [DOI: 10.1158/1538-7445.sabcs14-p5-02-12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Estrogen receptor (ER) and progesterone receptor (PR) expression are generally determined by semiquantitative immunohistochemistry (IHC) as recommended in the clinical practice guidelines of the American Society of Clinical Oncologists. This method may be subject to variability because of differences in fixation, ER antibody clones, as well as to immunostain interpretation and use of arbitrary cut-off points. Materials and methods: We identified 72 breast cancer cases at Basurto University Hospital from 1 September 2012 to 31 May 2014 that have been analyzed by Oncotype DX with reporting on ER/PR expression levels by RT-PCR (Genomic Health Inc, Redwood City, CA). According to the company’s report, a tumor is considered as ER positive with expression units of >=6.5 and PR positive with expression units of >=5.5. Oncotype DX is a commercial assay that predicts tumor recurrence in node-negative ER-positive breast cancers. It is a reverse transcription-polymerase chain reaction (RT-PCR) based assay that analyzes the expression of 21 genes (16 cancer-related and 5 control genes) to provide a distant disease recurrence score ranging from 0 to 100. At our institution, hormone receptors by IHC were analyzed on corresponding surgery breast specimens at the time of initial diagnosis. They were evaluated by IHC on formalin-fixed paraffin-embedded tissue, between 8-72 hours. ER was assessed using Roche antibody clone SP1 and PR was assessed using antibody clone 1E2. Percentage of positive nuclei was determined by visual microscopic estimation: <1 negative and ≥1 positive. We compared our semiquantitative method of reporting ER and PR status based on IHC to the RT-PCR hormone receptor results from Genomic Health. Results: There was 100% concordance between IHC and the RT-PCR assay for estrogen receptor status. PR findings between IHC and Oncotype Dx revealed a lower concordance (82%) than for ER. RT-PCR was negative in 10 (14%) cases in which IHC was positive. Pearson correlation coefficient for PR was 0.313. Although our results demonstrated high concordance between IHQ and Oncotype Dx for ER, our data showed poor concordance for PR.
Citation Format: Patricia Novas, Elena Galve, Sara Fernández, Maria Ángeles Sala, Alberto Arévalo, Juan Arango, Borja López de San Vicente, Seila Fernández, Ane Zumárraga, Purificación Martínez del Prado. Concordance between semiquantitative immunohistochemical assay and oncotype DX RT-PCR assay for estrogen and progesterone receptors [abstract]. In: Proceedings of the Thirty-Seventh Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2014 Dec 9-13; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2015;75(9 Suppl):Abstract nr P5-02-12.
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dePersio S, Utterback PL, Utterback CW, Rochell SJ, O'Sullivan N, Bregendahl K, Arango J, Parsons CM, Koelkebeck KW. Effects of feeding diets varying in energy and nutrient density to Hy-Line W-36 laying hens on production performance and economics. Poult Sci 2015; 94:195-206. [PMID: 25595478 DOI: 10.3382/ps/peu044] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 10/07/2014] [Indexed: 11/20/2022] Open
Abstract
The objectives of this study were to evaluate the effects of feeding 5 different energy and nutrient dense diets to Hy-Line W-36 hens on long-term performance and economics. A total of 480 19 wk old Hy-Line W-36 Single Comb White Leghorn hens were weighed and randomly allocated to 6 replicate groups of 16 hens each (2 adjacent cages containing 8 hens per cage, 60.9×58.4 cm) per dietary treatment in a randomized complete block design. The hens were fed 5 treatment diets formulated to contain 85, 90, 95, 100, and 105% of the energy and nutrient recommendations stated in the 2009 Hy-Line Variety W-36 Commercial Management Guide. Production performance was measured for 52 wk from 19 to 70 wk age. Over the course of the trial, a significant increasing linear response to increasing energy and nutrient density was seen for hen-day egg production, egg weight, egg mass, feed efficiency, energy intake, and body weight (BW). Feed intake showed no significant linear level response to increasing energy and nutrient density except during the early production cycle. No consistent responses were noted for egg quality, percent yolk, and percent egg solids throughout the study. Significant linear responses due to energy and nutrient density were seen for egg income, feed cost, and income minus feed cost. In general, as energy and nutrient density increased, egg income and feed cost per hen increased, but income minus feed cost decreased. Overall, these results indicate that feeding Hy-Line W-36 hens increasing energy and nutrient-dense diets will increase egg production, egg weight, egg mass, feed efficiency, energy intake, BW, egg income, and feed cost, but decrease egg income minus feed cost. However, these benefits do not take effect in early production and seem to be most effective in later stages of the production cycle, perhaps "priming" the birds for better egg-production persistency with age.
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Affiliation(s)
- S dePersio
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - P L Utterback
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - C W Utterback
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - S J Rochell
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | | | | | - J Arango
- Hy-Line International, Dallas Center, IA 50063
| | - C M Parsons
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - K W Koelkebeck
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801
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Moreno-Gómez F, Duque T, Fierro L, Arango J, Peckham X, Asencio-Santofimio H. Histological Description of the Skin Glands of Phyllobates bicolor (Anura: Dendrobatidae) Using Three Staining Techniques. INT J MORPHOL 2014. [DOI: 10.4067/s0717-95022014000300022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Arango J, Rivera D, Panyavin I, Rogers H, Utria O, De Los Reyes Aragon C, Medina M, Perrin P. A-36 * A National Survey of the Practice of Neuropsychology in Colombia. Arch Clin Neuropsychol 2014. [DOI: 10.1093/arclin/acu038.36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Arango J, Echeverri JJ, López A. Association between a polymorphism in intron 3 of the bovine growth hormone gene and growth traits in Holstein heifers in Antioquia. Genet Mol Res 2014; 13:6191-9. [PMID: 25158245 DOI: 10.4238/2014.august.15.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The aim of this study was to determine the association between a polymorphism in intron 3 of the bovine growth hormone (BGH) gene and growth traits related to the start of the reproductive life of Holstein heifers. This research was conducted using 480 Holstein heifers belonging to eight herds in three municipalities in the Department of Antioquia (Colombia). The phenotypic information used corresponded to information that had been historically recorded for each of the herds and was supplemented with information obtained through bimonthly visits to the herds over a period of 24 months. Genotyping was performed using the PCR-RFLP technique with DNA extracted from peripheral blood using the salting out technique. To determine association, statistical analyses were performed using parametric methods. Allele frequencies for the alleles (+) and (-) were 0.91 and 0.09, respectively. The genotype frequencies were 0.77, 0.2 and 0.03 for the genotypes (+/+), (+/-) and (-/-), respectively. There was an association between genotype and weight at first estrus and first calving (P < 0.01). The regression coefficients for both characteristics were significant, indicating that for each (+) allele, weight at first estrus and first calving decreased by 9.24 and 16.07 kg, respectively. The results indicated the existence of an association between a polymorphism in intron 3 of the BGH gene and both weight at first estrus and first calving, which can be used to facilitate the selection of animals with these genotypes for use in breeding programs.
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Affiliation(s)
- J Arango
- Biodiversity and Molecular Genetics Research Group - BIOGEM Department of Animal Production, School of Agricultural and Livestock Sciences, Universidad Nacional de Colombia, Antioquia, Medellin, Colombia
| | - J J Echeverri
- Biodiversity and Molecular Genetics Research Group - BIOGEM Department of Animal Production, School of Agricultural and Livestock Sciences, Universidad Nacional de Colombia, Antioquia, Medellin, Colombia
| | - A López
- Biodiversity and Molecular Genetics Research Group - BIOGEM Department of Animal Production, School of Agricultural and Livestock Sciences, Universidad Nacional de Colombia, Antioquia, Medellin, Colombia
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Wolc A, Arango J, Jankowski T, Dunn I, Settar P, Fulton JE, O'Sullivan NP, Preisinger R, Fernando RL, Garrick DJ, Dekkers JCM. Genome-wide association study for egg production and quality in layer chickens. J Anim Breed Genet 2014; 131:173-82. [PMID: 24628796 DOI: 10.1111/jbg.12086] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Accepted: 02/14/2014] [Indexed: 12/21/2022]
Abstract
Discovery of genes with large effects on economically important traits has for many years been of interest to breeders. The development of SNP panels which cover the whole genome with high density and, more importantly, that can be genotyped on large numbers of individuals at relatively low cost, has opened new opportunities for genome-wide association studies (GWAS). The objective of this study was to find genomic regions associated with egg production and quality traits in layers using analysis methods developed for the purpose of whole genome prediction. Genotypes on over 4500 birds and phenotypes on over 13,000 hens from eight generations of a brown egg layer line were used. Birds were genotyped with a custom 42K Illumina SNP chip. Recorded traits included two egg production and 11 egg quality traits (puncture score, albumen height, yolk weight and shell colour) at early and late stages of production, as well as body weight and age at first egg. Egg weight was previously analysed by Wolc et al. (2012). The Bayesian whole genome prediction model--BayesB (Meuwissen et al. 2001) was used to locate 1 Mb regions that were most strongly associated with each trait. The posterior probability of a 1 Mb window contributing to genetic variation was used as the criterion for suggesting the presence of a quantitative trait locus (QTL) in that window. Depending upon the trait, from 1 to 7 significant (posterior probability >0.9) 1 Mb regions were found. The largest QTL, a region explaining 32% of genetic variance, was found on chr4 at 78 Mb for body weight but had pleiotropic effects on other traits. For the other traits, the largest effects were much smaller, explaining <7% of genetic variance, with regions on chromosomes 2, 12 and 17 explaining above 5% of genetic variance for albumen height, shell colour and egg production, respectively. In total, 45 of 1043 1 Mb windows were estimated to have a non-zero effect with posterior probability > 0.9 for one or more traits.
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Affiliation(s)
- A Wolc
- Department of Animal Science, Iowa State University, Ames, IA, USA; Hy-Line International, Dallas Center, IA, USA
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Fulton JE, Arango J, Arthur JA, Settar P, Kreager KS, O'Sullivan NP. Improving the outcome of a Marek's disease challenge in multiple lines of egg type chickens. Avian Dis 2013; 57:519-22. [PMID: 23901770 DOI: 10.1637/10408-100212-reg.1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A challenge test following inoculation with a standard amount of a vv+ strain of the Marek's disease (MD) virus in multiple lines and multiple generations of egg type chicken and the corresponding phenotypic trend are described. This program significantly reduced mortality of progeny from selected sires for three to 11 generations in eight of the nine elite lines studied herein. In brown egg lines, a retrospective analysis of DNA indicated an association between the blood type B (major histocompatibility complex) of the sire and the MD mortality in the challenge of its progeny. As a result of the multigeneration stock amplification and crossbreeding processes used in the commercial breeding industry, improvement in survival after challenge at the elite level will translate to improved welfare for millions of birds at the commercial production level.
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Affiliation(s)
- J E Fulton
- Hy-Line International, P.O. Box 310, Dallas Center, 1A 50063, USA.
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Wolc A, Arango J, Settar P, Fulton JE, O'Sullivan NP, Preisinger R, Fernando R, Garrick DJ, Dekkers JCM. Analysis of egg production in layer chickens using a random regression model with genomic relationships. Poult Sci 2013; 92:1486-91. [PMID: 23687143 DOI: 10.3382/ps.2012-02882] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Random regression models allow for analysis of longitudinal data, which together with the use of genomic information are expected to increase accuracy of selection, when compared with analyzing average or total production with pedigree information. The objective of this study was to estimate variance components for egg production over time in a commercial brown egg layer population using genomic relationship information. A random regression reduced animal model with a marker-based relationship matrix was used to estimate genomic breeding values of 3,908 genotyped animals from 6 generations. The first 5 generations were used for training, and predictions were validated in generation 6. Daily egg production up to 46 wk in lay was accumulated into 85,462 biweekly (every 2 wk) records for training, of which 17,570 were recorded on genotyped hens and the remaining on their nongenotyped progeny. The effect of adding additional egg production data of 2,167 nongenotyped sibs of selection candidates [16,037 biweekly (every 2 wk) records] to the training data was also investigated. The model included a 5th order Legendre polynomial nested within hatch-week as fixed effects and random terms for coefficients of quadratic polynomials for genetic and permanent environmental components. Residual variance was assumed heterogeneous among 2-wk periods. Models using pedigree and genomic relationships were compared. Estimates of residual variance were very similar under both models, but the model with genomic relationships resulted in a larger estimate of genetic variance. Heritability estimates increased with age up to mid production and decreased afterward, resulting in an average heritability of 0.20 and 0.33 for pedigree and genomic models. Prediction of total egg number was more accurate with the genomic than with the pedigree-based random regression model (correlation in validation 0.26 vs. 0.16). The genomic model outperformed the pedigree model in most of the 2-wk periods. Thus, results of this study show that random regression reduced animal models can be used in breeding programs using genomic information and can result in substantial improvements in the accuracy of selection for trajectory traits.
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Affiliation(s)
- A Wolc
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Poland.
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Arango J, Echeverri JJ. Asociación del valor genético del toro con caracteres productivos en vacas lecheras en Colombia. ARCH ZOOTEC 2013. [DOI: 10.21071/az.v63i242.539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Actualmente en Colombia no existe un programa que permita la estimación de valores genéticos en bovinos de leche. El objetivo de esta investigación fue determinar la asociación de los EBV (Valor de Cría Estimado) de toros Holstein y Jersey,con el desempeño fenotípico de sus hijas en Colombia; para esto se analizó la asociación de sus EBV con algunos parámetros productivos y sanitarios analizados directamente en su progenie (hijas). Para la estimación de los componentes de varianza, parámetros genéticos y valores genéticos, se utilizó el método de máxima verosimilitud restringida (REML) empleando un algoritmo libre de derivadas con el software MTDFREML. La asociación de las características con los EBV de los toros se realizó utilizando un modelo lineal mixto. Las heredabilidades para producción de leche, proteína, grasa y células somáticas en raza Holstein fueron: 0,19±0,0; 0,37±0,04; 0,37±0,04 y 0,34±0,05 y en Jersey fueron: 0,20±0,0; 0,64±0,0; 0,55±0,0 y 0,14±0,26 respectivamente. Los EBV de los toros Holstein influyeron (p
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Fulton JE, Soller M, Lund AR, Arango J, Lipkin E. Variation in the ovocalyxin-32 gene in commercial egg-laying chickens and its relationship with egg production and egg quality traits. Anim Genet 2012; 43 Suppl 1:102-13. [PMID: 22742508 DOI: 10.1111/j.1365-2052.2012.02384.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Avian eggshell quality is an important trait for commercial egg production, as the eggshell is the primary packaging material and antimicrobial barrier for the internal food resource. Strong eggshells are essential to ensure that eggs can reach their final destination without damage. Ovocalyxin-32 (OCX32) is a matrix protein found within the outer layers of the eggshell and in the cuticle. Numerous reports in the literature have identified association between variants in the gene encoding this protein, OCX32, and various eggshell quality traits. Thus, OCX32 is a candidate gene for selection for eggshell traits in commercial poultry populations. Sequencing of exons 2-6 of the OCX32 gene in eight elite brown and white eggshell commercial egg-laying lines revealed 28 SNPs and one SNP/indel. Eighteen of these SNPs were predicted to alter the amino acid sequence of the protein. Clusters of SNPs in complete linkage disequilibrium were found in both exons 2 and 6. A total of 19 different versions or protein-sequence haplotypes of the OCX32 protein were inferred, revealing considerable variation within commercial lines. Genotypes for 13 of the SNPs were determined for 330-1819 individuals per line. Trait association studies revealed a significant effect of OCX32 on shell color in white egg lines and line-specific significant effects on albumen height, early egg weight, puncture score, and yolk weight. Three of the lines showed a significant change in OCX32 frequency over time, indicating selection pressure for certain variants of this gene during the breeding program.
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Affiliation(s)
- J E Fulton
- Hy-Line International, PO Box 310, Dallas Center, IA 50063, USA.
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Wolc A, Arango J, Settar P, Fulton JE, O’Sullivan NP, Preisinger R, Habier D, Fernando R, Garrick DJ, Hill WG, Dekkers JCM. Genome-wide association analysis and genetic architecture of egg weight and egg uniformity in layer chickens. Anim Genet 2012; 43 Suppl 1:87-96. [DOI: 10.1111/j.1365-2052.2012.02381.x] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Wolc A, Arango J, Settar P, O'Sullivan N, Olori V, White I, Hill W, Dekkers J. Genetic parameters of egg defects and egg quality in layer chickens. Poult Sci 2012; 91:1292-8. [DOI: 10.3382/ps.2011-02130] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Abstract
The objectives of this study were to estimate genetic parameters for egg production over the age trajectory in 3 layer lines, which represent different biotypes for egg production, and to validate the use of breeding values for slope as a measure of persistency to be used in the selection program. Egg production of more than 26,000 layers per line from 6 consecutive generations were analyzed with a random regression model with a within-hatch-nested fifth-order fixed-regression polynomial and linear polynomials for random additive genetic and permanent environmental effects. Daily records were cumulated into biweekly periods. In all lines, a nonzero genetic variance for mean and slope and a positive genetic correlation between mean and slope were estimated. Genetic variance of egg production by 2-wk period was low at the beginning of lay and increased as the birds aged for all 3 lines, which resulted in heritability estimates increasing with age. Breeding values for slope reflected the shape of the egg production curve well and can be used to directly select for persistency of egg production.
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Affiliation(s)
- A Wolc
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, Poznan, Poland.
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Trujillo CM, Muskus C, Arango J, Patiño PJ, Montoya CJ. Quantitative and functional evaluation of innate immune responses in patients with common variable immunodeficiency. J Investig Allergol Clin Immunol 2011; 21:207-215. [PMID: 21548449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
OBJECTIVES We evaluate the frequency and functional response of innate immune cells in peripheral blood (PB) from patients with common variable immunodeficiency (CVID) and healthy controls upon activation with agonists of the Toll-like receptors (TLR) TLR2, TLR4, and TLR9. In addition, several nonsynonymous single nucleotide polymorphisms (SNPs) within these TLR genes were examined. METHODS Flow cytometry was used to perform immunophenotyping and evaluate the expression of cell surface markers. Levels of cytokines in the culture supernatants were evaluated using cytometric bead array technology. SNPs in the TLR genes were evaluated from genomic DNA using different sequencing techniques. RESULTS Our results demonstrate that the frequency of CD1d-restricted TCR invariant natural killer T cells in PB was significantly reduced in the patients with CVID. A marked, though not significant, reduction in absolute numbers of plasmacytoid dendritic cells and natural killer cells was also observed in these patients. Interestingly, CD80 and CD86 expression on innate cells upon stimulation with TLR ligands was not altered in the patients although 3 of them exhibited low baseline levels of these surface molecules on monocytes compared to healthy controls. We also observed a significant increase in TNF-alpha levels in supernatants of PB mononuclear cells from CVID patients after stimulation with lipopolysaccharide. Finally, no association was found between the presence of nonsynonymous SNPs within the TLR genes and the clinical presentation of CVID. CONCLUSIONS Taken together, our study demonstrates than innate immune responses are disturbed in some CVID patients and prompts the evaluation of innate immunity genes as candidates to explain the CVID clinical phenotype.
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Affiliation(s)
- C M Trujillo
- Group of Primary Immunodeficiencies, University of Antioquia, Medellin, Colombia.
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Strauser D, Feuerstein M, Chan F, Arango J, da Silva Cardoso E, Chiu CY. Vocational services associated with competitive employment in 18–25 year old cancer survivors. J Cancer Surviv 2010; 4:179-86. [PMID: 20373043 DOI: 10.1007/s11764-010-0119-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2008] [Accepted: 02/10/2010] [Indexed: 10/19/2022]
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Lee LF, Kreager K, Arango J, Paraguassu A, Beckman B, Zhang H, Fadly A, Lupiani B, Reddy S. Comparative evaluation of vaccine efficacy of recombinant Marek's disease virus vaccine lacking Meq oncogene in commercial chickens. Vaccine 2010; 28:1294-9. [DOI: 10.1016/j.vaccine.2009.11.022] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2009] [Revised: 11/03/2009] [Accepted: 11/06/2009] [Indexed: 11/27/2022]
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Apone M, Quijano MC, Cuervo MT, Rincón A, Rogers H, Arango J. Poster 17: Family Needs Affect Well-Being in Family-Member Caregivers of Patients With Traumatic Brain Injury. Arch Phys Med Rehabil 2008. [DOI: 10.1016/j.apmr.2008.08.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Arango J, Ketchum J, Dezfulian T. Poster 1: The Predictors of Marital Stability 2 Years Following Traumatic Brain Injury. Arch Phys Med Rehabil 2008. [DOI: 10.1016/j.apmr.2008.08.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Arango J, Arbelaez M, Henao J, Mejia G, Arroyave I, Carvajal J, Garcia A, Gutierrez J, Velásquez A, Garcia L, Aguirre C. Kidney graft survival in patients with hepatitis C: a single center experience. Clin Transplant 2008; 22:16-9. [PMID: 18217900 DOI: 10.1111/j.1399-0012.2007.00679.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Hepatitis C virus (HCV) infection is highly prevalent in renal transplant candidates; however, its effect on the transplant outcome is still controversial. The aim of the present study was to determine the effect of HCV infection in the outcome of kidney transplantation in a single transplant center. The study population 144 HCV- randomized selected patients and 64 HCV+ patients transplanted from 1973 to 2000, followed for up to 60 months post-transplantation. This retrospective study included the following variables: type of dialysis, time on renal replacement therapy, number of transfusions before and after transplantation, number of transplants, type of donor, immunosuppression, and rejection episodes. The Kaplan-Meier method was used to estimate graft and patient survival. Log-rank test was used to assess the difference in survival between HCV+ and HCV-. A multivariate Cox proportional hazards model was used to analyze the relation between graft and patient survival. HCV+ and HCV- patients had similar demographic and clinical characteristics; however, a higher number of HCV+ patients received blood transfusions after transplantation. Patient survival was not significantly different in 39 HCV+ and 96 HCV- patients transplanted with living-related donors (71% and 77% at five yr, respectively). Similarly, there was not significant difference in 25 HCV+ and 48 HCV- patients transplanted with kidneys from deceased donors, although there was a tendency to better outcome in HCV- patients (55% and 72% at five yr respectively). Regarding graft survival, there was also no differences in HCV+ and HCV- recipients of living-related grafts (61% and 66% at five yr post-transplant, respectively) and recipients of kidneys from deceased donors (44% and 41%, respectively). The results show that HCV+ patients can be transplanted with the same success than HCV- patients.
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Affiliation(s)
- J Arango
- Grupo de Transplantes, Universidad de Antioquia, Hospital San Vicente de Paúl, Medellín, Colombia.
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Arango J, Misztal I, Tsuruta S, Culbertson M, Herring W. Estimation of variance components including competitive effects of Large White growing gilts. J Anim Sci 2007; 83:1241-6. [PMID: 15890801 DOI: 10.2527/2005.8361241x] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Records of on-test ADG of Large White gilts were analyzed to estimate variance components of direct and associative genetic effects. Models included the effects of contemporary group (farm-barn-batch), birth litter, pen group, and direct and associative additive genetic effects. The area of each pen was 14 m2. The additive genetic variance was a function of the number of competitors in a group, the additive relationships between the animal performing the record and its pen mates, and the additive relationships between pen mates. To partially account for differences in the number of pen mates, a covariable (qi = 1, 1/n, or 1/n(1/2)) was added to the associative genetic effect. There were 4,946 records from 2,409 litters and 362 pen groups. Pen group size ranged from 12 to 16 gilts. Analyses by REML converged very slowly. A grid search showed that the likelihood function was almost flat when the additive genetic associative effect was fitted. Estimates of direct and associative heritability were 0.15 and 0.03, respectively. Within the BLUPF90 family of programs, the mixed-model equations can be set up directly. For variance component estimation, simple programs (REMLF90 and GIBBSF90) worked without modifications, but more optimized programs did not. Estimates obtained using the three values of qi were similar. With the data structure available for this study and under an environment with relative low competition among animals, accurate estimation of associative genetic effects was not possible. Estimation of competitive effects with large pen size is difficult. The magnitude of competition effects may be larger in commercial populations, where housing is denser and food is limited.
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Affiliation(s)
- J Arango
- Department of Animal and Dairy Science, University of Georgia, Athens, 30602-2771, USA.
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Arango J, Misztal I, Tsuruta S, Culbertson M, Holl J, Herring W. Genetic study of individual preweaning mortality and birth weight in Large White piglets using threshold-linear models. Livest Sci 2006. [DOI: 10.1016/j.livprodsci.2005.11.011] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Arango J, Rosenthal M, DeLuca J, Cifu D, Hanks R. Poster 48. Arch Phys Med Rehabil 2005. [DOI: 10.1016/j.apmr.2005.08.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Arango J, Misztal I, Tsuruta S, Culbertson M, Herring W. Study of codes of disposal at different parities of Large White sows using a linear censored model. J Anim Sci 2005; 83:2052-7. [PMID: 16100059 DOI: 10.2527/2005.8392052x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
To study the genetic relationship between three grouped reasons for sow removal (SR) in consecutive parities, accounting for censoring, 13,838 records from Large White sows were analyzed. Data were from seven pure-line farms having, on average, 5.9% unknown SR. Three traits were subjectively defined, each corresponding to a classification of SR (reproductive [RR], nonreproductive [RN], and others [RO]). Records for each trait could take one of five categories, according to parity at removal (0 to 4 or later). A multivariate linear censored model was implemented. The model to estimate (co)variance components and parameters included the effects of year-season, region, contemporary group, and additive genetic effects. The most common SR was related to reproduction (48.5%). Diseases of different origin and cause, old age/parity, and sow death or loss accounted for about 18, 7, and 4% of total culls, respectively. Estimates of variance components showed heterogeneity of additive genetic and residual variances for the three traits. Estimates of heritability were 0.18, 0.13, and 0.15 for RR, RN, and RO, respectively. Genetic correlations between removal codes were high (> or =0.90). Results suggest sizeable additive genetic variances exist for parity at removal and different codes of removal. Different SR reasons seem to operate similarly or as a closely related genetic trait associated with fitness. In particular, RN and RO seem to be genetically indistinguishable. Data structure, definition, and volume are major limitations in studies of sow survival. A multiple-trait censored model is preferred to evaluate reasons of sow disposal. Grouped removal causes seem to be strongly genetically correlated but with heterogeneous variances, suggesting that combining all removal causes and treating the trait as parity at disposal is an alternative approach.
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Affiliation(s)
- J Arango
- Department of Animal and Dairy Science, The University of Georgia, Athens, 30602-2771, USA.
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Arango J, Misztal I, Tsuruta S, Culbertson M, Herring W. Threshold-linear estimation of genetic parameters for farrowing mortality, litter size, and test performance of Large White sows. J Anim Sci 2005; 83:499-506. [PMID: 15705745 DOI: 10.2527/2005.833499x] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Up to 109,447 records of 49,656 Large White sows were used to evaluate the genetic relationship between number of pigs born dead (BD) and number born alive (BA) in first and later parities. Performance data (n = 30,832) for ultrasound backfat (BF) at the end of the test and days to reach 113.5 kg (AD) were used to estimate their relationships with BD and BA at first parity in a four-trait threshold-linear analysis (TL). Effects were year-farm, contemporary group (CG: farm-farrowing year-farrowing month) and animal additive genetic. At first parity, estimates of heritability were 0.09, 0.09, 0.37, and 0.31 for BA, BD, AD, and BF, respectively. The estimate of genetic correlation between BD and litter size was -0.04 (BD-BA). Corresponding values with test traits were both -0.14 (BD-AD, BD-BF). Estimates of genetic correlation between BA and performance traits were 0.08 (BA-AD) and 0.05 (BA-BF). The two test traits were moderately negatively correlated (-0.22). For later parities, a six-trait (BD, BA in three parities) TL model was implemented. The estimates of additive genetic variances and heritability increased with parity for BD and BA. Estimates of heritabilities were: 0.09, 0.10, and 0.11 for BD, and 0.09, 0.12, and 0.12 for BA in parities one to three, respectively. Estimates of genetic correlations between different parities were high (0.91 to 0.96) for BD, and slightly lower (0.74 to 0.95) for BA. Genetic correlations between BD and BA were low and positive (0.02 to 0.17) for BA in Parities 1 and 2, but negative (-0.04 to -0.10) for BA in Parity 3. Selection for increased litter size should have little effect on farrowing piglet mortality. Intense selection for faster growth and increased leanness should increase farrowing piglet mortality of first-parity sows. A repeatability model with a simple correction for the heterogeneity of variances over parities could be implemented to select against farrowing mortality. The genetic components of perinatal piglet mortality are independent of the ones for litter size in the first parity, and they show an undesirable, but not strong, genetic association in second parity.
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Affiliation(s)
- J Arango
- Department of Animal and Dairy Science, the University of Georgia, Athens 30602-2771, USA.
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Duque E, Duque J, Henao J, Mejia G, Arango J, Arroyave I, Pena L, Tobón R, Carvajal J, Zuluaga G, Garcia A, Sanín E, Gutiérrez J, Velásquez A, Arbeláez M. Organs transplanted from intoxicated donors. Transplant Proc 2004; 36:1632-3. [PMID: 15350437 DOI: 10.1016/j.transproceed.2004.06.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
PURPOSE The purpose of our study was to evaluate short- and long-term results of transplants from cadaver donors who have died of poisoning by various substances. MATERIALS AND METHODS The actuarial survival rate of organs from intoxicated donors was calculated using the Kaplan-Meier method. RESULTS Among the 507 donors between January 1998 and December 2002, 5 (0.98%) had a cause of brain death of poisoning, namely, organo-phosphates (n = 2), methanol (n = 1), cyanide (n = 1) and acetylsalicilic acid(n = 1), from whom were procured 10 kidneys, 1 liver, 2 corneas, and 1 set of bones. The follow up for patients receiving solid organs was 15.2 months (range, 0-48 months). At 3 months, 90% of kidneys had normal function. No delayed graft function rejection episodes or major complications were reported in any recipient. None showed evidence of acute or chronic poisoning. Two died, 1 early mortality was due to anesthetic complications and the other at 17 months to an unknown cause. Actuarial kidney survival rates were 90% and 80% at 12 and 24 months, respectively. The liver recipient was well at the end of follow up. CONCLUSION Using organs of poisoned donors is feasible with comparable graft survival rates to other recipient.
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Affiliation(s)
- E Duque
- Transplant Group, University of Antioquia, San Vicente de Paul University Hospital, Medellin, Colombia, South America.
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Arango J, Agostini A, Silvestre A, Yaafar M, López C, Fishmann H. [Sanitary conditions of community dining halls in greater Buenos Aires, Argentina]. Rev Panam Salud Publica 1997; 2:225-31. [PMID: 9445768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Because of the importance of food safety for public health, a study was done to determine the microbiologic quality of foods provided to patrons of community dining halls in greater Buenos Aires, Argentina. The study was descriptive and was conducted in three municipalities with intermediate or high poverty indices; a sample of 52 dining halls was selected randomly from those municipalities. Information was collected from April 1994 through April 1995 by means of surveys, direct observations, and microbiologic analyses of the water and food served. Water and food analysis followed the recommendations of the Argentine Food Code and the International Commission on Microbiologic Specifications for Foods, respectively. The results were interpreted according to the values for cooked foods agreed upon by the Working Group on Food Monitoring. The microbiologic analysis revealed that 28 (54%) of the dining halls had food or water of inadequate quality and 11 (21%) had inadequacies in both. Bacillus cereus was the most commonly found pathogenic bacterium in the food samples analyzed. The factors that were significantly associated with unsatisfactory microbiologic conditions in the food and water were lack of disinfection of the water (P = 0.009), lack of hygiene in the environment (P = 0.03), the presence of rodents and insects (P = 0.05), the supply system for raw materials (P = 0.01), and a relatively small number of users, i.e., fewer than 100 (P = 0.0008). It was concluded that water disinfection and general clean-up of the dining halls were measures that could be put in place by providing education in the areas of hygiene and food handling to supervisors and employees. The results obtained also indicate the need to include a food safety evaluation among the general evaluation criteria for food assistance programs.
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Affiliation(s)
- J Arango
- Universidad de Buenos Aires, Departamento de Medicina Preventiva y Salud Pública, Argentina
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Taylor JE, Arango J, Hugo G, Kouaouci A, Massey DS, Pellegrino A. International migration and national development. Popul Index 1996; 62:181-212. [PMID: 12292019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
"In this review, we examine theories, data, and research on the macroeconomic relationship between international migration and national development in all world regions. Earlier reviews have generally been pessimistic about the prospects for economic development as a result of international migration. Until recently, however, theories and data have not recognized the complex, multifaceted, and often indirect ways that international migration can influence the economic status of households, communities, and nations, and they have generally failed to appreciate how these relationships can change over time. When these complexities are incorporated into theoretical models, research designs, and data collection, a more nuanced and far more positive picture emerges. Given a supportive mix of macroeconomic policies and infrastructure, international migration may function as a dynamic force promoting economic growth and national development, so long as it does not bring about the selective emigration of scarce human capital needed for development at home."
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Nicholson LK, Kay LE, Baldisseri DM, Arango J, Young PE, Bax A, Torchia DA. Dynamics of methyl groups in proteins as studied by proton-detected 13C NMR spectroscopy. Application to the leucine residues of staphylococcal nuclease. Biochemistry 1992; 31:5253-63. [PMID: 1606149 DOI: 10.1021/bi00138a003] [Citation(s) in RCA: 205] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
This paper describes the application of recently developed nuclear magnetic resonance (NMR) pulse sequences to obtain information about the internal dynamics of isotopically enriched hydrophobic side chains in proteins. The two-dimensional spectra provided by the pulse sequences enable one to make accurate measurements of nuclear Overhauser effects (NOE) and longitudinal (T1) and transverse (T2) relaxation times of enriched methyl carbons in proteins. Herein, these techniques are used to investigate the internal dynamics of the 11 leucine side chains of staphylococcal nuclease (SNase), a small enzyme having Mr = 16.8K, in the absence and presence of ligands thymidine 3',5'-bisphosphate (pdTp) and Ca2+. We report the synthesis of [5,5'-13C2]leucine, the preparation of SNase containing the labeled leucine, the sequential assignment of the leucine methyl carbons and protons in the liganded and unliganded proteins, and the measurement of the 13C T1, T2, and NOE values for the SNase leucine methyl carbons. Analysis of the relaxation parameters using the formalism of Lipari and Szabo shows that the internal motions of the leucine methyl carbons are characterized by effective correlation times tau f (5-80 ps) and tau s (less than 2 ns). The fast motion is identified with the rapid rotation of the methyl group about the C gamma-C delta bond axis, while the slow motion is associated with reorientation of the C gamma-C delta bond axis itself. The mean squared order parameters associated with the latter motion, Ss2, lie in the range 0.34-0.92. The values of Ss2 correlate reasonably well with the temperature factors of the leucine methyl carbons obtained from the crystal structures, but some are smaller than anticipated on the basis of the fact that nearly all leucine methyl carbons are buried and have temperature factors no larger than that of the leucine backbone atoms. Five leucine residues in liganded SNase and eight in unliganded SNase have values of Ss2 less than 0.71. These order parameters correspond to large amplitude motions (angular excursions of 27-67 degrees) of the C gamma-C delta bond axis. These results indicate that, in solution, the internal motions of the leucine side chains of SNase are significantly larger than suggested by the X-ray structures or by qualitative analysis of NOESY spectra. Comparison of Ss2 values obtained from liganded and unliganded SNase reveals a strong correlation between delta Ss2 and distance between the leucine methyl carbon and the ligands.(ABSTRACT TRUNCATED AT 400 WORDS)
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Affiliation(s)
- L K Nicholson
- Bone Research Branch, National Institute of Dental Research, National Institutes of Health, Bethesda, Maryland 20892
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Arango J, Pierce M. Comparison of N-acetylglucosaminyltransferase V activities in Rous sarcoma-transformed baby hamster kidney (RS-BHK) and BHK cells. J Cell Biochem 1988; 37:225-31. [PMID: 2840447 DOI: 10.1002/jcb.240370209] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Recent studies have demonstrated that Rous sarcoma virus-transformed baby hamster kidney (RS-BHK) cells express twofold higher levels of those N-linked oligosaccharides that contain the sequence [GlcNAc-beta(1,6)Man (1,6)] compared to nontransformed parental BHK cells (Pierce and Arango, J. Biol.Chem. 261, 10772 [1986]). We have investigated in RS-BHK and BHK cells the activity of UDP-GlcNAc:alpha-D-mannoside beta(1,6)N-acetylglucosaminyltransferase V, the enzyme that begins the synthesis of the sequence that is increased in the RS-BHK cells. We have measured GnT V activity using UDP-[3H]-GlcNAc and a synthetic oligosaccharide acceptor, GlcNAc beta(1,2)Man alpha(1,6)Man beta-O-(Ch2)8COOCH3, separating the radioactive product by a newly devised reverse-phase chromatographic technique. Assayed under optimal conditions, the specific activity of GnT V is about fourfold higher in RS-BHK sonicates than in BHK sonicates, suggesting that this increase in activity may be the primary mechanism that causes the increase in [GlcNAc beta(1,6)Man] sequences in the RS-BHK cells. The apparent Km values of the enzymes in RS-BHK and BHK cell sonicates for UDP-GlcNAc and the synthetic acceptor are similar, as are the pH optima. These results suggest that the increase in GnT V-specific activity in RS-BHK cells is not caused by the presence in these cells of a GnT V with markedly different kinetic properties.
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Affiliation(s)
- J Arango
- Department of Anatomy and Cell Biology, University of Miami School of Medicine, FL 33101
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Pierce M, Arango J, Tahir SH, Hindsgaul O. Activity of UDP-GlcNAc:alpha-mannoside beta(1,6)N-acetylglucosaminyltransferase (GnT V) in cultured cells using a synthetic trisaccharide acceptor. Biochem Biophys Res Commun 1987; 146:679-84. [PMID: 2956949 DOI: 10.1016/0006-291x(87)90582-1] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
N-acetylglucosaminyltransferase V activity has been measured under saturating conditions in the extracts of seven cultured cell lines using as substrates, UDP-[3H]-GlcNAc and a synthetic 8-methoxylcarbonyloctyl trisaccharide. The unreacted sugar-nucleotide and its breakdown products were separated from the radiolabeled tetrasaccharide product by reverse-phase chromatography. Enzyme activity was present in six of the cell lines, which were derived originally from either human, mouse, or hamster tissues, with the highest activity in mouse lymphoma BW5147 cells. The PHAR 2.1 variant cell line, derived from the BW5147 line, expressed no detectable activity.
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